On the development trend of sensors and measuring

2022-08-03
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Discussion on the development trend of sensors and measuring instruments in recent years, sensors are in the development stage of transformation from traditional to new sensors. The new sensor is characterized by miniaturization, digitalization, intelligence, multifunction, systematization and networking. It not only promotes the transformation of traditional industries, but also leads to the establishment of new industries. It is a new economic growth point in the 21st century. Miniaturization is based on micro electro mechanical system (MEMS) technology. At present, it has been successfully applied to silicon devices to form silicon pressure sensors (such as the above ejx transmitter)

microelectronic machining technology, including bulk micromachining technology, surface micromachining technology, LIGA technology (X-ray deep lithography, micro electroforming and micro replication technology), laser micromachining technology and micro packaging technology. The development of MEMS has raised the miniaturization, intelligence, multifunction and reliability of sensors to a new level. On the basis of microelectronic technology, the detection instrument of the sensor has a built-in microprocessor, or the micro sensor, microprocessor and related integrated circuits (operational amplifier, a/d or d/a, memory, network communication interface circuit) are encapsulated together to complete digitization, intelligence, networking and systematization. (Note: MEMS technology has also completed products such as micromotors or actuators, which will be introduced in another article). At present, it mainly refers to the use of a variety of fieldbuses and ethers (interconnection), which should be selected according to the characteristics of each industry. The most popular in recent years are FF, PROFIBUS, can, LonWorks, as INTERBUS, tcp/ip, etc

in addition to MEMS, the development of new sensors also depends on new sensitive materials, sensitive components and nanotechnology, such as a new generation of optical fiber sensors, superconducting sensors, focal plane display infrared detectors, biosensors, nano sensors, new quantum sensors, micro Tuoluo, complex sensors, intelligent sensors, fuzzy sensors, multi-functional sensors, etc

the multi-sensor data fusion technology is becoming a hot spot for businesses who are not optimistic about the future market. It was formed in the 1980s. It is different from general signal processing, and from the monitoring and measurement of a single or multiple sensors. It is a higher-level comprehensive decision-making process based on the measurement results of multiple sensors. The index selects 20 stocks from the insurance industry and participating insurance listed companies as constituent stocks. In view of the improvement of miniaturization and intelligence of sensor technology, on the basis of information acquisition, a pair of materials with large deformation are integrated with multiple functions due to large deformation, which is an inevitable trend. Multi sensor data fusion technology also promotes the development of sensor technology. The definition of multi-sensor data fusion is summarized: the local data resources provided by multiple sensors of the same or different kind distributed in different locations are integrated and analyzed by computer technology to eliminate the possible redundancy and contradiction between multi-sensor information, add complementarity, reduce its uncertainty, and obtain the consistent interpretation and description of the measured object, so as to improve the system decision-making, planning The rapidity of response makes every effort to create a leading area and correctness leading the city's industrial development, so that the system can obtain more sufficient information. Its information fusion appears at different information levels, including data level (pixel level) fusion, feature level fusion and decision level (evidence level) fusion. Compared with single sensor information, it has the following advantages: fault tolerance, complementarity, real-time and economy, so it has been gradually popularized and applied. In addition to military applications, it has been applied to automation technology, robotics, ocean surveillance, earthquake observation, architecture, air traffic control, medical diagnosis, remote sensing technology, etc

China's sensor industry should adapt to the technology trend, develop in the international direction of combining domestic and foreign markets, and let sensors and detection instruments seize the development opportunity of informatization

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