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The important feature of the electronic scale is that it does not need to measure the weight of the weight when measuring the mass of the measured object, but uses the principle that the electromagnetic force is balanced with the gravity of the measured object to measure. The weighing pan is connected to the coil through the bracket connecting rod, and the coil is placed in the magnetic field. If the weighing object is added to or removed from the weighing pan, the electronic balance will produce an unbalanced state. The position detector detects the transient displacement of the coil in the magnetic steel, and a change is generated by the PID regulator and preamplifier The output, after a series of processing, changes the current flowing through the coil, so that the electromagnetic force also changes and cancels with the measured object so that the coil returns to the original position and reaches a new equilibrium state. This is the principle of the electromagnetic balance automatic compensation circuit of the electronic balance. The change in current shows the mass of the object being weighed by numbers. With the development of modern sensor technology, the electronic balance industry has also developed rapidly, and there are more and more types of electronic balances on the market. For our ordinary consumers, how to buy electronic balances becomes more and more difficult. Large-scale electronic scales We generally call the balance for measuring small objects as the micro-electronic balance. The range of the micro-electronic balance is generally between 3-30g or 0.1-1g. The range of the microelectronic balance is very small, so we should not place excessive objects during use to avoid damage to the balance; in addition, we should also pay attention not to put wet or corrosive substances directly into the weighing pan, because this will cause Corrosion of the weighing pan leads to a large measurement error; at the same time, we use the front waist to preheat it, and only by grasping the correct preheating method can the error be minimized. Sensitivity means that for a given weight change, the indicated value of the scale can change accordingly. The discriminating power is to characterize the scale's ability to respond to small loads, that is, how much weight needs to be added to cause a noticeable change in the scale's indication. For electronic balances, discriminatory power is a meaningful concept, while sensitivity has no practical meaning. Therefore, the inspector should not misunderstand because the two are listed together in the regulations.

A few days ago, the Chinese Academy of Metrological Sciences successfully developed the first large-scale automatic weighing temperature and humidity test device in China, and passed the expert appraisal. The device can automatically realize the weighing performance test of large-scale weighing instruments under temperature and humidity conditions through the robot loading and unloading system without disassembling the weighing instrument. The overall technical indicators are better than foreign existing devices, which greatly improves the capacity of the weighing instrument performance testing system in China. Electronic pricing scales, electronic truck scales, railroad scales, quantitative packaging scales, port scales ... A wide range of weighing instruments are closely related to people's production and life. Whether the quality of weighing instruments is qualified is very important for maintaining market economic order and trade fairness. effect. Weighing performance test including weighing performance test, repeatability test, tare test, etc. is the main means to ensure accurate measurement and qualified quality of the weighing device. It is understood that, in accordance with the relevant national weighing instrument verification regulations, in addition to the normal temperature test, the performance evaluation test of the weighing instrument also needs to be performed under temperature and humidity conditions. In order to complete the test under temperature and humidity conditions, the module method was used in the past, that is, the large scale weighing instrument was dismantled and moved into the temperature and humidity test box, and then the testers analyzed and tested each component separately. However, the module method is not only cumbersome, but the tester entering the temperature and humidity test chamber will affect the reliability of the test results. At the same time, the high and low temperatures of up to 40 ° C and the lowest -10 ° C and a relative humidity of 85% in the test chamber also make it difficult for testers to complete linear and repeatable tests such as loading and unloading of weights. The lack of performance evaluation test capability for large scales has had a serious impact on China's foreign trade, scale evaluation tests and international mutual recognition. The large-scale weighing instrument automatic loading temperature and humidity test device developed by the Chinese Academy of Metrology has solved this problem well. According to the head of the project, Wang Jian, Director of the Mass Density Research Office of the China Academy of Metrology, the device is mainly composed of an independently developed robot loading and unloading system, a temperature and humidity test chamber, and an electric pallet truck. The robot loading and unloading system can complete the 10-stage load process backhaul test (of a temperature or wet hot spot) in 12 minutes. Without the need for a tester to enter the temperature and humidity test chamber, the instrument can be adjusted under various temperature and humidity conditions. The scale evaluation test greatly shortens the test time of large scales. At the same time, the drive and electrical components are installed outside the temperature and humidity test chamber, which effectively avoids the influence and damage of temperature and humidity conditions on the long-term stability and reliability of the equipment. Compared with similar technologies at home and abroad, the device adopts electromechanical integration design technology, the hardware structure is novel, the special-shaped weight group is designed with precision, the combination method is scientific and reasonable, and the software function is complete. At present, the test device system runs smoothly and reliably. It can provide a special temperature and humidity test environment for large-scale, special, and special-shaped weighing devices of 300 to 3000 kg to carry out type evaluation tests such as weighing performance tests, repeatability tests, and peeling tests. The uncertainty is better than 5 × 10-6. According to industry insiders, the establishment of a large-scale weighing instrument automatic loading test device has improved China's weighing measurement and inspection capabilities, and has met the international legal measurement organization (OIML) international recommendations on weighing instruments and the OIML type evaluation multilateral recognition framework agreement (MAA) test technical requirements With China's weighing instrument measurement and testing capabilities entered the international advanced ranks.

inductance For the resistance strain gauge type load cell (hereinafter referred to as "load cell"), the structural shape and related dimensions of the elastomer have a great influence on the performance of the load cell. It can be said that the performance of the load cell mainly depends on the shape and related size of its elastomer. If the elastomer design of the load cell is unreasonable, no matter how high the processing precision of the elastomer and the quality of the attached strain gauge, the load cell is difficult to achieve high force measurement performance. Therefore, in the design process of the load cell, it is important to design the elastomer properly. The design of the elastomer is basically within the scope of the mechanical structure design, but the structure is different from the ordinary mechanical parts and components due to the need of the force measurement performance. In general, ordinary mechanical parts and components only need to meet the strength and stiffness under a sufficiently large safety factor, and the stress distribution on the parts or components under stress conditions is not strictly required. However, for the elastomer, in addition to the mechanical strength and rigidity requirements, it is necessary to ensure the stress (strain) of the strain gauge portion (hereinafter referred to as the "patch portion") attached to the elastomer and the load that the elastic body bears. The force measurement) maintains a strict correspondence; at the same time, in order to improve the sensitivity of the load cell force measurement, the patch portion should also reach a higher stress (strain) level. It can be seen that the following two requirements must be met during the design of the elastomer: (1) The patch site should have a high level of stress (strain). In order to meet the above two requirements, in the design of the elastic body of the load cell, the design principle of [stress concentration" is often applied to ensure that the stress (strain) level of the patch is high and maintains a strict correspondence with the measured force. In order to improve the force sensitivity and force measurement accuracy of the designed load cell. (2) The stress (strain) of the patch part should maintain a strict correspondence with the measured force; The principle of "stress concentration" for improving the irregular distribution of stress (strain) In the design process of mechanical parts or components, stress (strain) is generally considered to be regularly distributed on the part or member. If the shape of the part or member does not change, it is not necessary to consider the problem of irregular stress (strain) distribution. In fact, in the design of mechanical parts or components, the problem of irregular distribution of stress (strain) is not considered, but is included by the safety factor in the strength calculation. For the load cell, it measures the strain of the patch on the elastomer by the strain gauge to measure the magnitude of the measured force. To ensure that the stress (strain) of the patch portion is strictly related to the measured force, it is actually to ensure that the stress (strain) of the patch on the elastomer is distributed according to a certain rule when the load cell is stressed. . In practical applications, the factors that have a greater influence on the stress (strain) distribution of the elastomer patch are mainly the changes in the stress conditions of the elastomer. The change of the elastic force condition means that when the magnitude of the force applied by the elastic body is constant, the action point of the force changes or the contact condition of the elastic body with the adjacent loading member and the bearing member changes. If this situation is not considered in the design of the elastomer structure, it may cause irregular changes in the stress (strain) distribution on the elastomer. The most typical example of this is the barrel load cell. In order to reduce the measurement error caused by the change of the elastic force condition, some sensor designers adopt the method of increasing the number of patches on the elastic body of the barrel type force sensor, and as much as possible, the circumferential stress on the patch part of the elastic body. The case where the (strain) distribution is uneven is measured. Such a treatment method has a certain effect, and can reduce the measurement error caused by the change of the elastic force condition. However, this method is a passive method after all. The number of added patches is always limited, and it is difficult to measure the uneven distribution of stress (strain) on the circumferential surface of the patch on the elastomer. The degree of reduction is not significant enough. The essence of the force error caused by the change of the elastic force condition is the irregular distribution of the stress (strain) on the circumference of the elastomer patch, if the stress (strain) distribution on the circumference of the elastomer patch is affected. The constraint of certain conditions forces the stress (strain) of the patch to be distributed according to a certain rule, so that the stress (strain) of the patch portion of the elastomer is strictly related to the measured force, thereby reducing the elasticity. The force error caused by the change of the body's stress conditions. Stress concentration principle for increasing stress (strain) levels In order for the load cell to achieve higher sensitivity, the strain gauge should generally have a higher strain level, ie, the patch should have a higher stress (strain) level on the elastomer. There are two common methods for achieving a high stress (strain) level on the patch on the elastomer: (1) The elastic body is locally weakened in the vicinity of the patch portion, so that the local stress (strain) level of the patch portion is increased, and the stress (strain) level of other portions of the elastic body is substantially unchanged. Both of the above methods can improve the stress (strain) level of the patch portion, but for the overall performance of the elastomer, the effect of partially weakening the elastomer is much better than the overall reduction of the elastomer size. Because the partial weakening of the elastomer can not only improve the stress (strain) level of the patch portion, but also maintain the high strength and rigidity of the elastomer as a whole, which is beneficial to improving the performance and the use effect of the sensor. The principle of partially weakening the elastomer to increase the stress (strain) level of the patch is: by locally weakening the elastomer, causing local stress concentration, so that the stress (strain) level of the stress concentration portion is significantly higher than the stress level of other parts of the elastic body. By attaching the strain gauge to the stress concentration site, a higher strain level can be measured. Local stress (strain) concentration methods are often used in the design of load cells, especially in elastomer designs for beam load cells such as curved beam and shear beam load cells. The local stress (strain) concentration method is applied to the more successful shear beam type load cell. The shear beam type load cell is used to measure the shear stress (shear strain) on the beam type elastomer. For beam-shaped members, the bending strength is the main contradiction. In the case where one beam satisfies the bending strength, the shear strength is generally large. When a blind hole is dug near the neutral layer, the shear stress (shear strain) on the web on the section is significantly improved, but the bending stress on the section is improved little. Therefore, after applying the local stress concentration scheme to the shear beam type elastomer, the detected shear strain is greatly improved, the sensitivity of the load cell is significantly improved, and the bending strength of the entire beam is little affected, so that the entire beam is maintained. Good strength and stiffness. (2) The overall size of the elastomer is reduced to comprehensively increase the level of stress (strain) on the elastomer.

The progress of science and technology has brought new changes to the human society. With the new generation of information technology as the representative, the industrial revolution has come. Industrial automation companies are using IT and information technology such as the Internet of Things, big data, and cloud computing to create more economic benefits. So what role will these industrial automation plants play in the future manufacturing industry? Just as the intelligently adjusted highway system for future cars is laid, the connectivity of industrial assets has become the basis for the implementation of the next wave of technologies. Today's digital transformation will lay the foundation for the future development of smart manufacturing. Today, when we build industrial infrastructure, we still look like physical machines such as motors, turbines, and logistic locomotives. On the surface, it looks like it was a decade ago, but in reality, these assets and equipment have undergone major changes. More and more devices have Internet of Things connectivity, and industrial equipment is gradually entering the digital era. According to a recent report, most industrial companies have recognized the significant benefits of industrial Internet of Things, but eight adults said they do not have a mature plan to seize this opportunity. It seems that gaining benefits from the Internet of Things is not an easy task. Things. In fact, with the development of sensors and intelligent control systems in industrial facilities, companies can now easily use this wave of technology to achieve efficient business processes through connectivity, thereby increasing digital maturity. In the next few years, industrial manufacturing will be more advanced than ever before. Artificial Intelligence Based Automation The benefits that artificial intelligence brings to industrial equipment operations are gradually being recognized by enterprise personnel. Using machine learning software algorithms in asset performance management, through historical data integration analysis, can help field personnel predict and maintain faulty equipment and provide enterprises with higher Accuracy, more advanced warning services. Applying complex machine learning algorithms to real-time performance data analysis, the value of artificial intelligence will be further reflected. Create smarter, self-sufficient machines with AI technology while enabling the production line to respond to changes in demand. At this stage, many companies are still undergoing a process of digital transformation, connecting the machinery and equipment assets of all factories and workshops. Various enterprise resource planning systems and different data may hinder data analysis and market decisions. However, by communicating more device data through sensors, the asset performance management system based on artificial intelligence can not only organize and standardize data input, but also enhance the ability of enterprises to analyze data, thereby realizing more automated and accurate decision-making. For some of the manual processes currently operated by the plant, such as the release of work orders and schedule checks will be automated, simplifying maintenance practices and improving machine performance. Digital Twins Bring Key Advantages The application of digital twin products is becoming more and more common in all walks of life. The true digital ecosystem will provide enterprises with key advantages and provide sufficient motivation for operating asset performance management. Predefining how assets work and execute, and then using this information to build replicas of assets. The concept of the word twin is based on the idea that the virtual copy test of each asset informs the operator about the health, life, and performance levels of the device. Based on the digitization, the company is fully capable of optimizing the machine at any time of the day to adjust the maximum productivity level of the production line. For businesses that need to produce at every second every year, millions of dollars can be saved by digitizing to avoid unplanned downtime. As long as the company has established a digital copy of the assets that better understands the operations of the entire plant, it can identify any abnormal or underperforming equipment and take appropriate actions as appropriate. Even further, these data can eventually be anonymized and shared across the industry, allowing users to get larger data samples and more accurate references. For the average asset operating company, its ability to collect and analyze statistics is limited, but as long as it will use a wide range of shared data resources and peer experience, it will provide better performance insights for asset management. Identify device failures and performance issues. Augmented reality subverts equipment maintenance For equipment maintenance personnel, not all industrial equipment is accessible. Some machines and equipment may have thousands of parts, and each part is embedded in a strong material layer, and may be operating in the world's harshest environments. For decades, when equipment routine inspections or asset display errors required maintenance, the inspection process required a huge amount of time and manpower. The inspection team needed to conduct actual operation tests on the equipment to determine the real problem. Manufacturers of medical technology equipment must keep inspections on key medical systems. If the hospital has an infection, the equipment used to detect the infection needs immediate response. If a manufacturer's microbiological device has any performance issues, it can put the entire healthcare ecosystem at risk. Therefore, this special equipment needs regular monitoring and inspection. New technologies are rapidly changing the way that inspection teams work. With the advancement of augmented reality in mobile devices and the support of digital twins, field workers can now conduct in-depth inspections based on real-time information without taking the device offline and performing physical analysis. As more and more field service professionals are able to use augmented reality technology, companies will minimize the risks that extreme environments can bring to workers, such as working close to pipelines or oil rigs, and by keeping equipment online. Run to maximize efficiency. Artificial intelligence, digital twins, and augmented reality have been well used in industry. The key to making the most of these new capabilities is to have an adaptive digital infrastructure, including connected assets that provide information through asset management systems. As more and more devices use data analytics, industrial companies will have the ability to optimize asset performance in real time, enabling intelligent asset management.

The new computer human body scale (ultrasound) actively measures the height and weight, and the voice reports the results, can also print the results, and can be connected with the computer, the portable medical examination machine with small small wheels, can be folded, to facilitate the operation is simple and convenient, Named portable medical examination machine. Buying a portable medical examination machine will look for the Yongheng brand physical examination machine. The Yongheng brand physical examination machine is suitable for hospitals, campuses, and medical examinations. In particular, the outpatient physical examination shows the use and speed of the portable new medical examination machine. The new computer body scale (ultrasound) is controlled by microcomputer. The body of the machine is light and easy to carry (the whole machine can be folded), and the measurement is efficient. It is an ideal choice for some units such as hospitals, campuses, gyms, medical examinations and bathing. It can take the initiative to measure height and weight, measure the results of voice report, digital display together, and can be connected with the computer for archival purposes. Ling first ultrasonic height measurement, fine sensor weight measurement, making the measurement agile and accurate. The compact appearance and high-grade paint technology and stainless steel chassis make this machine luxurious and luxurious.

The difference between people is very small, the difference is in the way of thinking, and the small difference determines the success and failure of a person. People are emotional, sincere, and we sincerely serve you and sincerely serve you. Product Name: Forklift Scale / Electronic Forklift Scale / Hydraulic Forklift Scale .. Handling and weighing electronic scales for simultaneous operation .. especially suitable for the weighing of goods in logistics operations such as railways, highways, commerce, industrial and mining. .. weighing platform consists of hydraulic manual handling mechanism and weighing components .. hydraulic drive weighing platform lifting, manual implementation of vehicle operation .. special sensors, special weighing instruments, zeroing, peeling, accumulating and other functions; Unit can be switched ( kg/1b ); .. rechargeable battery powered .. high weighing accuracy and stable performance .. The surface is treated with dust-removing spray, which has the characteristics of anti-corrosion and anti-rust; .. comes with a cylinder, with functions such as lifting, lowering and moving; .. RS232 communication interface is optional; .. can be equipped with a micro printer (user-selected); ‥ AC and DC. .. service line: diligence - sinus Sitting machine: Forklift electronic scale operating environment : .. Forklift electronic scale should be preheated during use, lifting the boom 5-10 times, is the oil pressure and sensor preheating to normal working temperature .. In operation, when the bucket is lifted, the joystick's joystick should be placed in the extreme position first, that is, the bucket is at the rear end of the Zui .. The boom system should be strictly lubricated to reduce the friction coefficient of the boom .. select a flatter ground for weighing .. The process of lifting the boom should be evenly controlled. .. It is better to set zero when the car stops driving. ‥ weighing procedure avoids traveling vehicle, For driving, the speed should be controlled in 10KM / h or so .. If equipped with multiple tipping buckets, the bucket used must be corrected for weighing .. The electronic scale starts the car before starting the machine, and the electronic scale is turned off before turning off the car power. .. Avoid water flow such as instrumentation during cleaning to avoid damage Electronic forklift scale standard instrument function description : .. high-precision A / D conversion, readability of 1/30000 ; .. Calling the internal code display is convenient, instead of the sensitivity weight observation and analysis tolerance; .. special software technology to enhance the system's ability to resist vibration; .. zero tracking range, zero (power on / manual) range, can be set separately; .. digital filtering speed, amplitude and stable time can be set; .. with weighing counting function; (one piece weight has power failure protection) .. a variety of backlight modes are available; .. can be charged randomly; with undervoltage indication and protection device; .. randomly equipped 6V/4AH maintenance-free battery Electronic forklift scale display instrument technical parameters: .. A / D conversion method : Σ - Δ conversion method .. A/D conversion rate : 20 times / sec .. zui large A / D conversion number : 20bit .. input signal range : - 10mV ~ 15mV .. Input sensitivity : ≥ 1 μ V/e ‥ sensor bridge power supply C5V Professional and in place after-sales service system: .. 1 you can solve the problem ‥ 10 minutes, we will respond quickly. .. 1 day to solve, troubleshoot .. is not a customer in the region, such as within the company's 36 outlets, the company promised to repair within 3 to 5 working days. .. If you are not in the company's business network, please send the faulty product to the company if the quality problem occurs. The company is responsible for free maintenance. Warranty content: .. Free Warranty Period: Any failure of the product that belongs to the company's products and product quality reasons shall be guaranteed by the warranty for one year from the date of purchase. .. If it exceeds one year, it will be charged according to the fee, and the parts, maintenance and calibration fees will be charged according to the fault condition. .. When the product has failed in the past five years, the company will provide the service as usual. If the company has no parts inventory, it will be difficult to serve. .. If there is no maintenance unit in the user's location, please send the product to our company for repair. Non-warranty scope: .. Any failure caused by improper installation, use, or storage. .. Failure to use the power supply as specified causes a malfunction. .. natural disasters, ground changes, rodents, and pests cause malfunctions. .. Self-disassembly and repair caused failure. ‥ battery warranty period of three months. [Remarks] A penny and a share of goods, professional quality allows you to buy the rest assured, the use of scales! Contact us if you are interested in these scale load cell and weight indicator. www.galoce.com

On the eve of May 1st is the day when home appliance manufacturers focus on launching new products. With the drive of new generation information technologies such as artificial intelligence, Internet of Things, and big data, artificial intelligence is gradually becoming the standard for home appliances. Statistics show that by 2020, the global artificial intelligence system will bring more than 47 billion U.S. dollars in revenue to home appliance companies, and Chinese home appliance companies will also return to the "tide" with the upgrade of consumption and the support of artificial intelligence technology. New home appliances have exerted their "artificial intelligence" selling point Recently, artificial intelligence has become the focus of competition in the home appliance industry. For example, Konka Multimedia `s A2 Art TV is equipped with the latest artificial intelligence. Without remote control, it can directly call [Xiaokang Xiaokang" to wake up the TV to listen to songs, play games, watch TV, etc. Control curtains, air conditioners, TVs, etc. equipped with the latest AI chip independently developed by SKYWORTH, with artificial intelligence image quality adjustment function, combined with AI voice, AI system, etc., you can even ask the weather of the TV arrival before the business trip, clothes matching And other information. It is understood that mainstream home appliance brands including Skyworth, TCL, Haier, Hisense, Midea, Konka, Changhong and others have launched their own AI products and AI systems. AI technology has also been widely used in various categories of home appliances: smart TV can make people Taobao shopping on the screen while watching the program, the smart refrigerator can understand the instructions of the person, the smart oven will automatically "recognize" the ingredients to achieve one-click cooking, the air conditioner automatically recognizes that the user adjusts the more suitable temperature for the elderly or children, and the cleaning robot Being able to plan a clean route by yourself ... these have become consumers' daily home appliance usage scenarios. Observer Liu Buchen of the home appliance industry told reporters that artificial intelligence is a big outlet for upgrading and transformation, and all manufacturers naturally hope to seize this opportunity. Industry statistics show that by 2020 the global artificial intelligence system will bring more than 47 billion US dollars in revenue for home appliance companies, and the smart TV market penetration rate will reach 90%. AI is different from intelligent possessing "thinking ability" However, the talents who confuse artificial intelligence with intelligence, consumers are even more confused in the promotion of many AI concepts. What is artificial intelligence? To put it plainly, it means that machines have the ability to think and recognize just like humans. For example, after the AI is integrated into the TV, it will automatically learn the user's usage habits. After the new drama is updated, it will be actively pushed or even automatically downloaded. In the smart home system, artificial intelligence is like an invisible housekeeper, taking care of everything in your home. In the words of Chen Xiaoping, the founder of Yunmi Whole House Internet Appliances, when a product has AI, it is [very smart"; when a bunch of appliances and devices are smart, they have the wisdom of the group. According to reports, Yunmi established the artificial intelligence laboratory AI lab in 2016, focusing on exploring and applying research technologies including voice control, face / image recognition, gesture control, and algorithmic big data, and has produced considerable technology. Results. To date, Yunmi's core technology products have obtained 628 authorized technical patents and applied for more than 1,000 patents. The application of kitchen appliances AI is still in the initial stage Although AI has been widely used in home appliances, not all products are suitable for this technology. "I think kitchen appliances such as ovens and steamers are more suitable for AI technology because it needs to address the individual needs of different family members." Wang Qiang, the boss's electrical technology officer, said that on the contrary, dishwashers and smoke machines have problem solving attributes Products do n`t have to be AI. He said that the company's application of AI will mainly focus on kitchen appliances related to food and cooking. At present, products with AI technology have been launched. Pan Ban, head of Vantage's Brand Department, told reporters that Vantage will first apply AI technology to Magic Mirror A2 cigarette machine products. The product can adjust the air volume according to the size of the oil smoke, and the automatic "cruise" function can achieve the best balance between smoking effect and smoke exhaust, and also has an intelligent voice dialogue function. Wang Qiang believes that due to the presence of kitchen noise, oil fumes, and higher requirements for safety and convenience such as water and electricity, its application scenarios are more complicated than household appliances such as color TVs and refrigerators, which requires a high degree of matching of AI technology. "Therefore, the use of AI in kitchen appliances is still in the initial stage, and the application of relatively large appliances has a certain lag." Pan Ban also believes that the current use of AI in home appliances is mostly a single product. Only when the AI applications of each single product are stacked together to form a systematic operation can it be called real AI, and this requires the establishment of a platform. What are the applications of artificial intelligence technology in home appliances? Real-time image search The TV is playing a TV series, and the user asks "Who is this person?" The TV will immediately show the relevant introduction of the actors on the screen. This image recognition function not only recognizes all kinds of small coffee giants, but also supports multi-person simultaneous recognition. News, photography, shopping with the same paragraph and gossip are presented together, and you can even quickly identify the merchandise, stars, station logos and QR codes displayed on the screen. Voiceprint recognition Some TVs now have voiceprint recognition technology embedded, and the TV will recognize different roles (such as male, female, and child) according to different tones, thereby providing personalized visual and content push services. The user wants to watch a movie but does not know what to watch, and says "I want to watch a movie" to the TV, then the TV will display completely different recommended content according to the identified users. The interface for women is soft pink. The recommended movies are mainly romance. Men will see dark blue vision and some action and science fiction-based movie results. If it is a child, you will get some recommended results of cartoons. At present, some TVs of Changhong, Konka and TCL all support this function. Emotional voice interaction In terms of voice, a new TTS emotional voice interaction technology has also appeared, which can eliminate the unnatural and cold feeling of machine broadcast, make artificial intelligence TV more "human", realize realistic, personalized, emotional, scene To create a [feeling happy" experience for users. Mastering the emotional voice interaction of TTS, the TV will feel your feelings like friends and appreciate your joys and sorrows. Visual Identity In addition to voice interaction, facial recognition and motion recognition can also be achieved by adding cameras to home appliances. Users do not need to vocalize, but only need to use gesture control to make comfort adjustments. With the addition of cameras and microphones, the brains of smart homes have eyes and ears. The artificial intelligence air conditioner that appeared in the previous exhibition integrates the four in one of image, location, gesture and voice recognition. The user's identity (gender, age) can be identified through the somatosensory camera. According to the user's habits of using the air conditioner, the operating parameters of the air conditioner are automatically adjusted to provide a personalized comfortable air solution. When there are multiple family members in the space, after the air conditioner is recognized, combined with the priority level of the personnel in the registration list, it automatically selects the priority to push the corresponding operation mode according to the needs of the current highest-level personnel. When the elderly and children appear, the air conditioner automatically switches to a targeted "care mode", giving priority to protecting and meeting the health needs of the elderly and children.

Many people may still live in a relatively primitive stage for smart home life. Most people think that smart home is not simply a mode of integrated home appliance control. It integrates some home-use washing machine TVs and microwave ovens and coffee machines. The application of the board to achieve a unified control. But many people have said that smart home joining is not just a simple appliance intelligence, it also incorporates a number of network elements, and the intelligent control of the network system has become the core content, intelligent household appliances is just an add-on product, it The effect of the function has obviously been greatly reduced. Network security features are implemented. The original smart home life may be simple household appliances intelligent, but now with the network and smart home are inseparable. Therefore, the function of network security is also paying attention to the fact that everyone can intelligently monitor the internal environment of the entire family through a corresponding network system and intelligently realize the security function, so its security performance is naturally more pronounced, and it is also a family. Life is safe and worry-free. Of course, the emergence of the network system makes everyone's concept of joining the smart home is also constantly enriched and full, wide area network and lighting features are the latest research areas of high-end smart home companies, and their research is also relative to the running book, we should choose this The company's franchisees can occupy a place in the smart home market. Only after occupying the market can we achieve profitability and sales, so everyone should keep up with the times in today's smart home concept. GALOCE load cell can provide the kinds of load cells and force sensors for your smart household appliances, contact us www.galoce.com

The three words of torque, torque and torque are often used by engineers in the industry. Everyone thinks that these three are the same concept. When testing, they only pay attention to their ratings and peak values. Today, let's analyze the differences between the three and related test items. First, the source and difference of torque, torque and torque When it comes to torque, we immediately think of leverage. The product of the force and the distance of the fulcrum perpendicular to the direction of action of the force is called the moment. The unit of torque is Newton-meter. Figure 1 Lever torque Torque and torque are the moments of rotation. For a rotating object, if the center of the rotating shaft is regarded as a fulcrum, the product of the force on the circumference of the rotating object and the distance between the center of the rotating shaft and the direction of the force is called torque. When a cylindrical object is subjected to force without rotation, the object has only elastic deformation due to the torsion force. The torque at this time is called torque. Figure 2 Torque, torque Therefore, it can only be called "torque" strictly in the running motor. It is not appropriate to use "torque" or "torque". However, it is customary to use these three names for a long time, at least for six or seventy years, so no one deliberately corrects it. Second, the method and trend of motor torque measurement At present, the torque of the measuring motor in the industry is generally measured directly by the torque measuring instrument. There are many industry leading edge measurement items for the torque of the motor, such as moment angle characteristics, torque fluctuation, cogging torque, friction torque test, etc. . For a stepping motor or a switched reluctance motor, particular concern is the angle θ between the stator magnetomotive force FS and the rotor magnetomotive force Fr, rather than the power angle σ well known in conventional synchronous motors. The angle θ in the step-synchronous motor is a very important parameter, called the moment angle, and the relationship between the motor torque and the moment angle becomes the moment angle characteristic. The following figure shows the moment angle characteristic curve obtained by the test of the MPT1000 motor test system of Zhiyuan Electronics. The motor exhibits a small fluctuation value ΔM due to the change of its output torque with the armature angular position. The torque fluctuation coefficient is usually used to measure this quality of the torque motor. Zhiyuan Electronics uses the load motor to apply the maximum torque specified in the continuous working area to the motor under test, control the motor to run at the lowest speed, use the torque sensor to record the torque of the motor during one week of operation, and record the maximum torque and minimum torque. , the torque fluctuation coefficient can be calculated.

The model of the 10N button dedicated dynamometer is GSI315. It is specially designed for the pressing test of key button with "click" action. It is equipped with SPF key test frame, which can be combined into a special key button test machine. Features: High precision and high resolution, accuracy level 0.5, minimum reading up to 0.001N. Comparison function, free setting of upper and lower limit deviation values, red and green indicator lights and buzzer automatic sound and light alarm settings. Memory function, can store 10 sets of test data, average value calculation function. Three kinds of unit conversion, can change N, kgf, lbf three kinds of measurement units, and automatic conversion. The LCD screen can be flipped over. Press and hold the unit key for 3 seconds and then release it to flip the direction of the LCD screen. Automatic shutdown function, environmental protection, power saving and machine design, shutdown time (1 ~ 60 minutes) can be set freely. RS-232C serial port output, can be connected to a computer to synchronously display the test force curve and test process record trace, can edit the report format according to actual needs, and can print 10 sets of stored test data and maximum, minimum, average, qualified or Unqualified value judgment. Technical Parameters: Product model SH-10F Maximum test load 10N Division value 0.005N Indication error ± 0.5%

The torque sensor is one of the important components of the electronically controlled power steering system. It is used to measure the magnitude and direction of the torque applied by the driver on the steering wheel and convert it into an electric signal. The power steering ECU receives this signal and the vehicle speed signal to determine the direction and magnitude of the auxiliary power, so as to control the steering torque at low speed. small. The steering torque is moderately increased at high speeds. Some sensors are also capable of measuring the size and direction of the steering wheel angle. Torque measurement systems are complex and costly, and many components are integrated. For example, Toyota cars integrate steering motors, torque sensors and steering columns to form a steering column assembly, which makes steering control more accurate and reliable. Torque sensor troubleshooting The torque sensor is generally used to measure the magnitude and direction of the torque applied by the driver on the steering wheel and convert it into an electrical signal. The power steering ECU receives this signal and the vehicle speed signal to determine the direction and magnitude of the auxiliary power, so that at low speeds. The steering torque is reduced, and the steering torque is moderately increased at high speeds. It is one of the important components of the electronically controlled power steering system. In addition, some sensors are also able to measure the size and direction of the steering wheel angle. Torque measurement systems are complex and costly, and many components are integrated. For example, Toyota cars integrate steering motors, torque sensors and steering columns to form a steering column assembly, which makes steering control more accurate and reliable. . Torque sensors are currently available in both contact and non-contact versions: non-contact torque sensors and contact torque sensors The non-contact torque sensor is also called a sliding variable resistance torque sensor. The contact torque sensor is equipped with a torsion bar between the steering shaft and the steering pinion. When the steering system is working, the torsion bar is measured by a slip ring and a potentiometer. The amount of deformation is converted into a voltage signal. The non-contact torque sensor has two pairs of pole rings. When the relative rotation between the input shaft and the output shaft occurs, the air gap between the pole rings changes, thereby causing a change in the electromagnetic induction coefficient, and an induced voltage is generated in the coil. And convert the voltage signal into a torque signal. The advantage of the non-contact torque sensor is its small size and high precision. In general, when the torque sensor is damaged or the performance is poor, the following types of faults may occur in the steering system: 1. Difficulty in steering; different steering torques or uneven steering torque; 2. The steering torque does not change with the speed of the vehicle or the steering wheel cannot be correctly corrected when driving; 3. The P/S warning light on the combination meter lights up. Reasons for signal instability and processing methods The torque sensor often encounters unstable output signals during use, but there is no problem in sending the sensor back to the manufacturer for testing. What is the reason? In fact, there are many reasons why the torque sensor is unstable during use. The common three main aspects are as follows: 1. The torque sensor is not installed, and the shafts are not parallel. This will result in unstable signal output. The working sensor is easily damaged in such a state for a long time. 2, the power supply voltage is unstable, our torque sensor is generally plus or minus 15V dual voltage power supply also has 24V or other voltage supply, unstable supply voltage will also cause the output signal is unstable. 3. The interference of other machines beside the torque sensor. For example, if there is a frequency converter next to the torque sensor, it is easy to cause the output signal to be unstable. The solution is to add a 1:1 isolation transformer to the sensor's power supply. The above is some simple troubleshooting methods for the torque sensor failure that Xiaobian brings to you, and some reasons for the failure analysis, I hope to help everyone!

1. Definition of force analysis Find out all the external forces that the specified object (the research object) is subjected to in a specific physical situation, and draw a force map. This is the force analysis. 2. The general order of force analysis First analyze the field forces (gravity, electric field force, magnetic field force), then analyze the contact force (elastic force, friction), and finally analyze other forces. 3. General steps for stress analysis: (1) Select the research object: that is, determine the object to be analyzed by force. The research object can be a single object or a system combination of objects. (2) Analysis of isolated objects: Separating the research object from the surrounding objects, and then analyzing the gravity, elastic force, friction force, electric field force, magnetic field force, etc., which are subjected to the object, and checking which objects around it exert a force on it. (3) Draw a force diagram: perform force analysis in a certain order. Generally analyze gravity first; then circle the object one week to find the object that is in contact with the research object, and analyze the elastic force and friction force one by one; finally analyze other field forces . In the process of force analysis, it is necessary to analyze and draw the force map (to develop a good habit of painting the force map). Only draw the force of nature, not draw the effect. (4) Check whether the force analysis is wrong: After the force analysis is finished, check whether each force drawn can find out its force-applying object, and check whether the analysis result can make the research object in the motion state given by the problem, otherwise Inevitably, leakage, multi-force or wrong force will occur.

1. The application error of the load cell is generated by the operator, which also means that there are many reasons, such as errors in temperature measurement, including incorrect placement of the probe or incorrect insulation between the probe and the measurement site. Some application errors include errors in the purification process of air or other gases, and application errors also involve incorrect placement of the transmitter, so positive or negative pressure will affect the correct reading. 2. The characteristic error is defined as the inherent in the device itself. It is the difference between the ideal and recognized transfer function characteristics and the true characteristics of the device. Such errors include DC drift values, incorrect bevels, or non-linear bevels. 3. Dynamic Error Many sensors are characterized and calibrated for static conditions, which means that the input parameters used are static or static-like. Many sensors have strong damping, so they do not change the input parameters. Fast response, for example, the thermistor takes a few seconds to respond to a step change in temperature. 4. Therefore, the thermistor does not immediately jump to a new impedance, or a sudden change. Instead, it slowly changes to a new value, so that if the load cell with delay characteristics responds to rapid changes in temperature. The output waveform will be distorted because it contains dynamic errors. The factors that produce dynamic errors are response time, amplitude distortion, and phase distortion. 5. Insertion error is the error caused by changing the measurement parameters when a sensor is inserted in the system. Generally, such problems occur when performing electronic measurement, but similar problems may occur in other methods of measurement, for example. A voltmeter measures the voltage in the loop. It must have an inherent impedance that is much larger than the loop impedance or a loop load. At this point, the reading will have a large error. This type of error is caused by the use of A transmitter that is too large for the system (eg, pressure system); either the system's dynamics are too slow, or the system is self-heating with too much thermal energy. 6. The environmental error is derived from the environment in which the sensor is used. The load cell factors include temperature, or vibration, vibration, altitude, chemical volatilization or other factors, which often affect the characteristics of the sensor, so in practical applications, these factors are always Are grouped together.

With the rapid development of electronic metering technology, the belt scale measuring system is developing in a fast, continuous and precise direction. The core of the high-precision metering system is the load cell. Its performance depends mainly on two aspects, one is the base material of the strain gauge, and the other is the strain core material of the strain gauge sensitive grid. Regardless of which strain gage is used, the drift of the strain gauge caused by temperature changes cannot be ignored. The strain gauge attached to the sensor elastomer, under the influence of the load, except for the change of the resistance value with temperature, the other physical properties of the elastomer material and the strained alloy also change somewhat. These changes are pure strain gauges. It is a false change due to temperature changes. For the sensor, the temperature drift caused, which in turn affects the metering accuracy of the entire weighing system. Solution : The temperature self-compensation of the load cell is mainly due to the temperature self-compensation of the resistance strain gauge. On this basis, the zero temperature drift of the sensor can also be compensated by line compensation. In actual work, the sensor is often not at a constant temperature. Work, so the zero point will drift with temperature as the sensor is not subjected to external forces. This change will affect the accuracy and performance of the sensor, sometimes to an unusable level. The compensation method is to connect a temperature-sensitive resistor in series on a bridge of the resistor, and achieve the purpose of compensation by successive approximation. For the compensation of the output sensitivity, a compensation resistor can be symmetrically connected in series at the input end of the bridge. When the temperature rises, the resistance value of the compensation resistor becomes larger, thereby reducing the bridge voltage, and the purpose is to compensate the output sensitivity.

The load cell will have a bright future! As the best instrument for force measurement and control, the load cell has already matured in the Chinese market. However, the load cell is still developing in the ever-changing innovation. The designer of the load cell will think more about how to put it into use more conveniently, and how to make different improvements in different aspects of the application. With the expansion of the market, manufacturers of load cells have gradually become more and more, how to do better in the market, it is not difficult to analyze, only in the continuous improvement of sensor technology and services can go in the market top. With the advent of the new technological revolution, China and the world have begun to enter a new era of information. In the process of using information, the first thing to be solved is to obtain accurate and reliable information, and the sensor is the most important way and means to obtain information in the natural and production fields. In modern industrial production and automated production processes, various load cells are required to monitor and control various parameters in the production process. The function of the load cell is to make the equipment work in a normal state or in an optimal state and to produce it. The products achieve the best quality. It can be said that without many excellent load cells, modern production will lose its foundation. Weighing sensors have long penetrated into extremely ubiquitous fields such as industrial production, space development, ocean exploration, environmental protection, resource surveys, medical diagnostics, bioengineering, and even cultural relics protection. So it seems that load cells will be in this smart There will be a bright future for the development of the production industry. If you want to know more about this, you can check it out at the following website. www.galoce.com www.galoce.en.alibaba.com

Resistance strain gauge load cell principle The resistance strain gauge load cell is based on the principle that the elastic body (elastic element, sensitive beam) is elastically deformed under the action of an external force, so that the strain gauge (conversion element) attached to the surface is also deformed along with the resistance strain gauge. After the deformation, its resistance value will change (increase or decrease), and then the corresponding measurement circuit converts this resistance change into an electrical signal (voltage or current), thereby completing the process of converting the external force into an electrical signal. . It can be seen that the resistance strain gauge, the elastomer and the detection circuit are indispensable parts of the resistance strain type load cell. The following is a brief discussion of these three aspects. First, the resistance strain gauge A strain gauge is a mechanical distribution of a resistor wire on a substrate made of an organic material, that is, a strain gauge. He is an important parameter is the sensitivity coefficient K. Let us introduce the meaning of it. There is a metal resistance wire having a length L and a cross section of a circle having a radius r , the area of which is denoted by S , and the resistivity thereof is denoted by ρ, and the Poisson coefficient of this material is μ. When the resistance wire is not subjected to an external force, its resistance value is R : R = ρ L/S (Ω) ( 2 - 1 ) When both ends are subjected to the F force, they will elongate, that is, they will be deformed. Letting its elongation Δ L , its cross-sectional area is reduced, that is, its cross-sectional radius decreases by Δ r . In addition, it can be proved by experiments that the resistivity of the metal resistance wire changes after deformation, which is denoted as Δρ. Find the full differential for equation ( 2--1 ), that is, how much the resistance value changes after the resistance wire is stretched. We have: Δ R = Δρ L/S + Δ L ρ /S –Δ S ρ L/S2 ( 2 - 2 ) Use equation ( 2--1 ) to remove formula ( 2--2 ) Δ R/R = Δρ / ρ + Δ L/L – Δ S/S ( 2 - 3 ) In addition, we know that the cross-sectional area of the wire is S = π r2 , then Δ s = 2 π r* Δ r , so Δ S/S = 2 Δ r/r ( 2 - 4 ) We know from material mechanics Δ r/r = - μΔ L/L ( 2 - 5 ) Among them, when the negative sign indicates elongation, the radius direction is reduced. μ is the Poisson coefficient representing the transverse effect of the material. Substituting the formula ( 2 - 4 ) ( 2 - 5 ) into ( 2--3 ), there is Δ R/R = Δρ / ρ + Δ L/L + 2 μΔ L/L = ( 1 + 2 μ(Δρ / ρ) / (Δ L/L )) * Δ L/L = K * Δ L/L ( 2--6 ) among them K = 1 + 2 μ + (Δρ / ρ) / (Δ L/L ) ( 2--7 ) Formula ( 2--6 )) illustrates the relationship between the rate of change in resistance (relative change in resistance) and the elongation of resistance (relative change in length) of the strain gauge. It should be noted that the magnitude of the sensitivity coefficient K is a constant determined by the properties of the metal resistance wire material. It is independent of the shape and size of the strain gauge. The K value of different materials is generally between - and then K. The value is a dimensionless quantity, ie it has no dimension. In material mechanics, Δ L/L is called strain, which is called ε. It is often used to indicate that the elasticity is too large and inconvenient. Often one millionth of its unit is recorded as με. Thus, the formula ( 2--6 ) is often written: Δ R/R = K ε ( 2 - 8 ) Second, the elastomer The elastomer is a structural member with a special shape. It has two functions. The first is that it bears the external force of the load cell, and the external force produces a reaction force to achieve a relative static balance. Second, it produces a high-quality strain field (zone) that is pasted in this area. The resistance strain gauge is ideal for performing the conversion task of the strained jujube electrical signal. Take the elastomer of the Toledo SB series load cell as an example to introduce the stress distribution. A cuboid cantilever beam with a boring is provided. The center of the bottom of the pupil is subjected to pure shear stress, but tensile and compressive stresses will appear in the upper and lower parts. The principal stress direction is one for pulling and the other is compression. If the strain gauge is attached here, the upper half of the strain gauge will be stretched and the resistance will increase, and the lower half of the strain gauge will be compressed and the resistance will be reduced. The strain expressions at the center of the bottom of the pupil are listed below and are not deduced. ε = ( 3Q ( 1+ μ) /2Eb ) * ( B ( H2-h2 ) +bh2 ) / ( B ( H3-h3 ) +bh3 ) ( 2--9 ) Where: Q-- shear force on the section; E-- Young's modulus: μ-Poisson's modulus; B , b , H , h -is the geometrical dimensions of the beam. It should be noted that the stress states analyzed above are all "local" conditions, and the strain gauges actually experience the "average" state. Third, the detection circuit The function of the detection circuit is to convert the resistance change of the strain gauge into a voltage output. Because the Wheatstone bridge has many advantages, such as suppressing the influence of temperature changes, it can suppress lateral force interference, and it is convenient to solve the compensation problem of the load cell, so the Wheatstone bridge is obtained in the load cell. A wide range of applications. Because the full-bridge equal-arm bridge has the highest sensitivity, the parameters of each arm are the same, and the effects of various disturbances are easily offset, so the load cell uses a full-bridge arm bridge. The working process of the resistance strain gauge load cell during the measurement process, the weight is loaded onto the elastomer of the load cell and causes plastic deformation. strain (forward and negative) The strain gauges mounted on the elastomer are converted into electrical signals. The simplest curved beam load cell has only one strain gauge. Generally, the elastomer and the strain gauge are combined in a variety of ways, such as a housing, a sealing member, etc. to protect the strain gauge.

The resistance strain type load cell is based on such a principle: the elastic body (elastic element, sensitive beam) produces elastic deformation under the action of external force, so that the resistance strain gauge (transformation element) attached to the other surface also deforms along with it. After deformation, its resistance value will change (increase or decrease), and then this resistance change will be converted into an electrical signal (voltage or current) through the corresponding measurement circuit, thus completing the process of converting external force into electrical signal . It can be seen that the resistance strain gauge, elastic body and detection circuit are the indispensable main parts of the resistance strain load cell. The following briefly discusses these three aspects. 1. Resistance strain gauges Resistance strain gauges are mechanically distributed a resistance wire on a substrate made of an organic material, which becomes a strain gauge. One of his important parameters is the sensitivity coefficient K. Let us introduce its significance. There is a metal resistance wire, whose length is L, and its cross-section is a circle with radius r. Its area is denoted as S, and its resistivity is denoted as ρ. The Poisson coefficient of this material is μ. When this resistance wire is not subjected to external force, its resistance value is R: R = ρL / S (Ω) (21) When its two ends are subjected to F force, it will elongate, that is, deformed . Suppose its elongation ΔL, its cross-sectional area is reduced, that is, its cross-sectional circle radius is reduced by Δr. In addition, it can also be experimentally proved that the resistivity of this metal resistance wire will also change after deformation, which is recorded as Δρ. Find the total differential of formula (2-1), that is, how much the resistance value of the resistance wire has changed after elongation. We have: ΔR = ΔρL / S + ΔLρ / S – ΔSρL / S2 (22) Use equation (2--1) to remove equation (2--2) to get ΔR / R = Δρ / ρ + ΔL / L – ΔS / S (23) In addition, we know that the cross-sectional area of the wire S = πr2, then Δs = 2πr * Δr, so ΔS / S = 2Δr / r (24) From the material mechanics, we know that Δr / r = -μΔL / L (25 ) Among them, the minus sign means that the radius direction is reduced when it is extended. μ is the Poisson coefficient of the lateral effect of the material. Substituting equations (24) and (25) into (2-3), ΔR / R = Δρ / ρ + ΔL / L + 2μΔL / L = (1 + 2μ (Δρ / ρ) / (ΔL / L)) * ΔL / L = K * ΔL / L (2-6) where K = 1 + 2μ + (Δρ / ρ) / (ΔL / L) (2-7) Equation (2-6)) explains the resistance The relationship between the rate of change of strain gauge resistance (relative change in resistance) and the elongation of resistance wire (relative change in length). It should be noted that the size of the K value of the sensitivity coefficient is a constant determined by the nature of the material of the metal resistance wire, which is independent of the shape and size of the strain gauge. The K value of different materials is generally between 1.73.6; Secondly, the K value is a dimensionless quantity, that is, it has no dimension. In the mechanics of materials, ΔL / L is called strain and is recorded as ε. Using it to express elasticity tends to be too large, and it is inconvenient to often take its parts per million as a unit and record as με. In this way, formula (2-6) is often written as: ΔR / R = Kε (28) 2. Elastomer Elastomer is a structural member with a special shape. It has two functions. First, it bears the external force on the load cell and generates a reaction force against the external force to achieve a relatively static balance; second, it must generate a high-quality strain field (area) to be pasted in this area. The resistance strain gauge is ideal for accomplishing the task of converting electrical signals of strain. Take the elastic body of Toledo's SB series load cell as an example to introduce the stress distribution. A rectangular parallelepiped cantilever beam is provided. The bottom center of the hollow hole is subjected to pure shear stress, but tensile and compressive stress will appear on the upper and lower parts. The principal stress direction is tension and compression. If the strain gauge is attached here, the upper half of the strain gauge will be stretched and the resistance will increase, while the lower half of the strain gauge will be compressed and the resistance will decrease. The strain expression of the center point of the bottom of the hole is listed below, and will not be derived. ε = (3Q (1 + μ) / 2Eb) * (B (H2-h2) + bh2) / (B (H3-h3) + bh3) (2-9) where: Q--shear on the cross section ; E-Young's modulus: μ Poisson's coefficient; B, b, H, h are the geometric dimensions of the beam. It should be noted that the stress states analyzed above are all local conditions, while the strain gages actually feel the average state. 3. Detection circuit The function of the detection circuit is to convert the resistance change of the resistance strain gauge into a voltage output. Because the Wheatstone bridge has many advantages, such as the effect of suppressing the temperature change, the lateral force interference, and the compensation problem of the load cell, etc., the Wheatstone bridge is obtained in the load cell Has been widely used. Because the full-bridge equal-arm bridge has the highest sensitivity, the parameters of each arm are the same, and the effects of various interferences are easy to cancel each other out, so the load cells use full-bridge equal-arm bridges.

In order to ensure the accuracy of the load cell/load cell, there are still some problems in the process of installation and use. Please pay attention to the following details when installing and using the force/weighing sensor to ensure the accuracy and use of the force measurement/sensor measurement. life: 1. The force/weighing sensor should be handled lightly, especially for small-capacity sensors that use alloy aluminum as the elastomer. Any shock or drop caused by vibration is likely to cause a large output error. 2. Design the loading device and the installation should ensure that the action line of the loading force coincides with the force axis of the force measuring/weighing sensor, so that the effects of the tilting load and the eccentric load are minimized. 3. In terms of level adjustment. If a single force/load cell is used, the mounting plane of the base should be adjusted to the level using a level; if multiple sensors are simultaneously measured, the mounting surface of the base should be kept at a level as much as possible. The purpose of this is mainly to ensure that the power of each sensor is basically the same. 4. Determine the rated load of the sensor used according to the range selection of the force/load cell in its description. 5, the base mounting surface of the sensor should be as smooth and clean as possible, without any oil or film. The mounting base itself should have sufficient strength and rigidity and typically require strength and stiffness above the sensor itself. 6. The sensor case, protective cover and lead connector are sealed and the user is not allowed to open. 7, to prevent chemical corrosion. The Vaseline should be used to smear the outer surface of the load cell/load cell. Avoid using direct sunlight and drastic changes in ambient temperature 8. If it is unavoidable, install protective or mitigation devices. 9. In order to prevent the large current from directly licking the sensor body and damage the sensor, it is forbidden to carry out the welding work after the sensor is installed. 10. Add a bypass device made of copper braided wire at both ends of the load cell/weighing sensor loading device. 11. The cable should not be lengthened by itself. When it is really necessary to lengthen, it should be soldered at the joint and add moisture-proof sealant. 12. It is best to use some baffles around the force/load cell to cover the sensor. The purpose of this is to prevent debris from falling into the moving part of the sensor and affecting its measurement accuracy. 13. The cable of the sensor should be away from the strong power supply line or the place with pulse wave. When the competition cannot be avoided, the cable of the load/load cell should be inserted into the iron pipe separately, and the connection distance should be shortened as much as possible. 14. According to the measurement/weighing sensor range selection in the description to determine the rated load of the sensor used, although the force/load cell itself has a certain overload capacity, it should be avoided during installation and use. Happening. Sometimes overloading for a short period of time may also cause permanent damage to the sensor. 15. In the case of high precision use, the force/load cell and instrument should be used after 30 minutes of warm-up. 16. The sensor should be placed in a dry, ventilated, non-corrosive atmosphere. Installation and use of the force / load cell should pay attention to these details, why some users use the sensor is not easy to break, but some users have not had problems, this is the same with the force / load cell It is related to the precautions for installation and use. After reading the above introduction, you may know something about it.

With the accelerated development of industrial automation, the demand for sensors is becoming more and more demanding. The harshness we are talking about means that the accuracy, size and life of the sensor are becoming more and more strict. In the early 1980s, China entered the development and production stage of mechanical sensors, and gradually developed pressure sensors, load cells, load cells, tension sensors, torque sensors and other mechanical sensors. Compared with before, China introduced Europe and the United States. For the load cell, we have completely developed and generated it. From the beginning of the single-point load cell, S-type pull pressure sensor, spoke type load cell, column load cell, etc., it is now possible to customize the special shape load cell for some customers' requirements, indicating that China is testing The force sensor industry will enter the world market. From the 1980s to the present, China has been researching, exploring and innovating in the field of load cells. After all, China entered the load cell later, so for now, whether it is from the accuracy or life of the sensor, we It is necessary to lag behind Europe and the United States and other countries, even our neighboring country - Japan, their force sensor technology is at least ling first 15 years or so. In particular, in recent years, some old-fashioned force measuring manufacturers in Europe and the United States have developed a number of miniature pressure sensors, small weighing sensors, small-sized load cells, and other miniature/small/small/small/small-range high-precision force. Sensors, these small load cells have evolved with the pace of industrial automation. At first, large size, bulky load cells have not met the needs of today's customers, and some miniature/small/small size load cells are coming soon. Slowly replacing the conventional conventional size load cell, the future stage is a small/micro/small size/small size weighing load cell. The market for this is a small pressure sensor, a miniature load cell, a small size load cell, and a small volume tension sensor.

Portable axle load meter, portable axle weight scale using technical analysis The wireless portable weighing instrument has a dynamic comprehensive precision of up to ±1-3% and a static comprehensive accuracy of 0.5-1%. This is A mobile, easy to carry car weighing product, affordable, no need to make a foundation, if your venue is not Enough, can also accept this error, may wish to buy a weighing product like this. 1. In order to make the portable weighing instrument work stably, there is a weighing threshold in the dynamic weighing mode, when the wheel weight > Weighing is effective when 100kg, otherwise it is invalid; 2. If the detected axle type of the vehicle is incorrect, the printer may not print or print in advance, and the weighing data will also be Affected; 3. The detected vehicle must have a distance greater than 20M between the driving direction and the weighing platform to ensure that it is detected. All wheels of the vehicle pass through the center of the weighing platform; 4, to ensure that the speed of the vehicle being tested is maintained at 3-5 km / h, passing through the weighing platform at a constant speed, on the weighing instrument The speed prompt is for reference only, please refer to the speed displayed on the car you are driving; 5. It is strictly forbidden to brake on the weighing platform or the approach bridge to prevent damage caused by the movement of the weighing platform or the approach bridge. Portable axle load meter, portable axle weight scale using technical analysis Simple axle load meter: used for raw material storage and storage, cumulative production, internal settlement, etc. In the way, the size of the weighing platform is much smaller than that of the ordinary truck scale, and the floor space is correspondingly small, so the investment Rarely; due to the light weight of the equipment, It is easy to move and saves installation and transportation costs. Check over-limit overload: It can be used as a traffic control and * department to check the overload of the vehicle on the road. This is safe. Car, protection road Roads and bridges are essential. Safety performance test: It can be used as a vehicle safety performance test line to detect the weight of a car's wheel (axle), mainly using its motion Mode, not only saves the installation site of the test line (actually saves the site investment), but also because of the use of dynamic Detecting the large detection time is shortened to improve the detection efficiency.