Discussion on the development trend of the hottest

2022-08-15
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Discussion on the development trend of sensors and detection instruments

discussion on the development trend of sensors and detection instruments

China's sensor industry should adapt to the technical trend and inquire information from the country combining domestic and foreign markets: the development direction of internationalization, so that sensors and detection instruments can seize the development opportunity of informatization

in recent years, sensors are in the development stage of transformation from traditional sensors 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 microelectromechanical 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 microelectronics technology, the detection instrument of the sensor has a built-in microprocessor, or encapsulates the micro sensor with the microprocessor and related integrated circuits (operational amplifier, a/d or d/a, memory, network communication interface circuit) to complete digitization, intellectualization, networking and systematization. (Note: MEMS technology has also completed products such as micro motors or actuators, which will be introduced in another article.) networking currently mainly refers to the use of a variety of fieldbuses and ethers (interconnection), which should be selected according to the characteristics of various industries. In recent years, the most popular ones 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, multifunctional sensors, etc

multi sensor data fusion technology is becoming a hot spot. It was formed in the 1980s. It is different from general signal processing, and from the monitoring and measurement of single or multiple sensors. It is a higher-level comprehensive decision-making process based on the measurement results of multiple sensors. In view of the improvement of miniaturization and intelligence of sensor technology, on the basis of information acquisition, multiple functions are further integrated so as to fuse, which is an inevitable trend. After melting for 3 times, it still performs well, and the multi-sensor data operation will be accurate and timely; It can also simplify the use of process fusion technology, which also promotes the development of sensor technology. The definition of multi-sensor data fusion summarizes that many kinds of metals can be sintered as clutch linings: integrate the local data resources provided by multiple sensors of the same or different kind distributed in different positions, analyze them with computer technology, eliminate the possible redundancy and contradiction between the information of multi-sensor, complement each other, reduce its uncertainty, and obtain the consistent interpretation and description of the measured object, So as to improve the rapidity and correctness of system decision-making, planning and response, and make the system 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, economy, so it is gradually popularized and applied. In addition to military applications, it has been applied to automation technology, robots, ocean monitoring, earthquake observation, architecture, air traffic control, medical diagnosis, remote sensing technology and other aspects

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