Force sensors are used a lot in our industrial areas, and have brought work efficiency to many companies and made the company's performance flourish. So, in which aspects are the application of force sensor technology in force value and automation control?
In the testing and automatic control process, weighing sensor technology is a very important link. This technology can accurately transmit and detect information in a certain form and convert it into information in another form, such as a force sensor, which can convert the force value of an object into an electrical signal output for use by instruments or other control equipment, thereby realizing industrial automatic control.
Specifically, sensors refer to components or devices that have a sense (or response) and detection function for a certain determined information of the object to be measured, and convert it into corresponding output signals according to certain rules. Without sensors to accurately and reliably capture and convert the original information being tested, all accurate tests and controls will not be able to achieve. Even the most modern electronic computers will not be able to fully play their due role without accurate information (or converted reliable data) and undistorted input.
There are many types and varieties of sensors, and the principles are also diverse. Among them, resistance strain sensors are widely used in force measurement devices for electronic scales and various new mechanisms. The accuracy and range are selected according to needs. The excessively high accuracy requirements are not very meaningful for a certain use. The excessively wide range will also reduce the measurement accuracy, and will cause excessive cost and increase process difficulties. Therefore, it is crucial to properly select the accuracy and range according to the requirements of the measurement object. However, no matter what conditions and occasions, the sensors used must be stable in performance, reliable data, and durable. To this end, while studying high-precision sensors, we must pay attention to the research on reliability and stability. At present, sensor technology, including the research, design, trial production, production detection and application of bed concealers, has gradually formed a relatively independent specialized discipline.
Generally speaking, since the location where the sensor is set is not ideal, under the combined influence of temperature, humidity, pressure and other effects, it can cause the sensor to drift and change in sensitivity, which has become a serious problem in use. Although people have taken temperature compensation and sealing and moisture-proof measures in the process of making sensors, it is closely related to the strain gauge, the energy-saving adhesive itself, the accuracy and proficiency of the adhesive technology, the selection of elastomer materials and the formulation of cold and hot processing techniques. None of them can be ignored, and they all need to be carefully designed and made. At the same time, you must also pay attention to the installation method of the sensor, the setting of the support structure, and how to overcome the directional force.
The sensor as a primary instrument usually consists of sensitive elements and conversion elements.
The conversion element is a precise bridge. Therefore, the reusable resistance strain sensor of force measuring scale is mainly composed of elastomer, strain gauge, adhesive glue and various compensation resistors. Its stability must also be determined by the combined effect of internal and external factors of these components. This article discusses this issue, talks about some superficial views, and discusses it with colleagues.
First of all, the elastic element. Elastic components are generally processed and molded from high-quality alloy steel, non-ferrous metal aluminum, beryllium bronze, etc., which affects the stability of the elastomer, mainly because of its metallographic structure and residual stress after various treatments. Considering the mutual equilibrium relationship during stress release and the constraints of the structure of the elastomer, in order to release residual stress, aging treatment must be carried out. In practice, if natural aging method is used, slow release and long periods are often undesirable, and time needs to be shortened artificially. Generally, the method to eliminate residual stress on the surface of the elastomer is to do vacuum tempering treatment, fatigue pulsation treatment and resonance. This can greatly reduce residual stress, complete the usual long-term natural aging in a short time, and make the tissue performance more stable.
Secondly, it is strain gauge and adhesive. The foil itself affects the stability of the strain gauge. There are many types of electrically limited alloys for manufacturing strain gauge. Among them, Conco Copper alloy is the most widely used. It has good stability, high fatigue life and small resistance temperature coefficient, and is an ideal wire grid manufacturing material. In addition, the instability caused by adverse effects should be eliminated during the manufacturing of the strain gauge. For example, the adhesion strength between the wire gate and the base glue, the adhesion strength between the strain gauge and the elastomer, the release of stress in the base glue, etc. are all unstable factors. In addition, the adhesion of strain gauge is also one of the very critical elements. The quality of this work directly affects the adhesive quality and even the measurement accuracy. If the patch is not strict and the technology is not proficient, it will be useless even if the best strain gauge is used.
Sensors with good performance will greatly increase the sustainability of industrial automatic control and improve production efficiency, which will play a very important role in the development of enterprises. At present, with the maturity of domestic sensor technology, sensor applications are becoming more and more extensive, and play a good supporting role in industrial applications.
