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1. The current situation and development trend of sensor research The 21st century is the information age, the information age is that information determines everything, and information is omnipresent. Information technology is composed of three basic technologies of information acquisition, information processing and information transmission. With the development of computer and network technology, information processing and information transmission have been basically ubiquitous at present, and the source of information - the status quo of information acquisition is still far from the requirement of ubiquity. In the final analysis, information acquisition technology is sensing technology. The ubiquitous distance between sensing technology is reflected in the technological backwardness of sensors in perceiving information on the one hand, and the technological backwardness of sensors in intelligence and networking on the other hand. Sensing technology is an important technological foundation for the new technology revolution and information society, and a pioneer of modern technology. Sensor is the key basic device of process automatic control system and information system, and its technical level directly affects the performance of the corresponding system.

2. Level. The higher the level of automation technology, the greater the dependence on sensor technology. Therefore, in today's world, sensor technology is one of the most important technologies involving national economy and national defense scientific research. Century key technology to be developed. 1. Current Situation of Sensor Research Sensor technology, communication technology and computer technology together constitute the three pillars of the information industry in the 21st century. If a computer is an extension of the human brain, then sensors are an extension of the human five senses. When integrated circuits and computer technology developed rapidly, people gradually realized that the sensor as an information acquisition device did not keep up with the development of information technology, and exclaimed that "the brain is developed and the five senses are ineffective". Since the 1980s, there has been a "sensor fever" in the world, and the development of sensors has been very rapid. In the past ten years, the annual growth rate of its production and market demand has averaged more than 10%.

3. On. At present, there are more than 5,000 units engaged in the development and production of sensors in the world. The United States, Europe, and Russia each have more than 1,000 manufacturers engaged in sensor research and production, and Japan has more than 800. Although the research and development of sensors in my country started not too late, the technology of the sensor industry is still very backward due to the limitations of the development level of the national economy and funds, as well as the misunderstanding of its importance in fact. At present, there are more than 1,300 units engaged in the development and production of sensors in my country. The research and development fields include photosensitive, thermal, force-sensitive, voltage-sensitive, magnetic-sensitive, gas-sensitive, humidity-sensitive, sound-sensitive, radiation-sensitive, ion-sensitive, bio-sensitive and various There are various types of sensors, transmitters, secondary instruments, etc., and there are more than 3,000 main products. Although the research and development of sensors in my country has made great progress, there is still a big gap compared with developed countries, mainly in the quality of products, production regulations.

4, mold, market development, sales and so on. Looking at my country's sensor industry, there are mainly the following two problems. 1) In terms of industrial structure, it is mainly due to scattered enterprises, weak strength and weak market development. There are very few sensor research and production units in our country, and most of them are low-level repetitions. Sensors are multidisciplinary and technology-intensive high-tech products, and their technical level is determined by the level of scientific research. However, my country's low investment in sensor research, backward scientific research equipment, and the disconnect between scientific research and production have affected the transformation of scientific research results. , so that the comprehensive strength of my country's sensor products is relatively low. There are about 20,000 kinds of sensors in the world, but there are only more than 3,000 kinds in my country at present. The existing products also have a big gap with foreign countries in terms of long-term stability and reliability, which limits the development of their application fields and industries. 2) In terms of industrial structure, there are many manufacturers, few large-scale enterprises, and sensor products.

5. There are many kinds, but the grade is not high. Among the manufacturers that develop, produce and sell sensors, actuators and transmitters in China, agents and sellers account for a considerable part, and there are also a number of foreign companies stationed in China, and there are very few professional companies. my country's IOoO variety of sensors, more than 950 kinds of components and products, basically cover all fields of information collection. But the level is still at the international level in the late 1980s or early 1990s. 2. The development trend of sensor technology There are two different ways to develop sensor technology abroad. One is the way represented by the United States, which is first military industry and then civilian use, and first improvement and then popularization; the other is represented by Japan, which focuses on practicality and commodities It is a way of self-improvement and design innovation, from introduction, digestion, imitation to self-improvement. According to the assessment of domestic experts, compared with advanced foreign countries, my country's sensor technology is 10 years behind in scientific research and development, and 15 years behind in production technology. foreign sensor

6. The rapid development of technology is mainly due to the following reasons. 1) Functional sensitive materials are the foundation of sensors. Foreign countries pay more attention to the research on functional materials such as functional ceramics, quartz, memory alloys, chemical vapor deposition diamond, porous silicon, functional polymers, and nano-scale ultra-fine powders, providing a basis for the birth of new sensors. . 2) Adequate scientific research funds and high-quality scientific research talents are the two main pillars of sensor research and development. For example, Honeywell's Solid State Sensor Development Center invests $50 million annually in research equipment, and renews most of its instruments about every three years. Japan believes that market competition is based on technological strength, and economic competition is ultimately technological competition. Whoever has the fastest technology development and more investment in new products will be able to adapt to the development of the market and remain invincible in the competition. 3) The principle of the sensor is not difficult, nor is it confidential, and the most confidential is the process. foreign

7. Few media believe that sensors are not ordinary industrial products, but a perfect work of craftsmanship. Foreign sensor companies generally spare no expense in strengthening process research and rely on technological breakthroughs to maintain technological leadership. 4) Foreign manufacturers inspect the sensors in strict accordance with various design indicators, and establish various data bases to form a strict overall quality management system, which greatly increases the vitality and competitiveness of sensors. They also attach great importance to market research and analysis, which includes application prospects, technology, technological advancement, feasibility, national or industry preferential policies, input-output ratio, comprehensive benefit analysis, market demand, and comprehensive feasibility discussions. The general trend of sensor technology development is summarized as the use of new materials and new processes to achieve miniaturization and integration, the use of new principles and new methods to achieve more types of information acquisition, and then supplemented by advanced information processing technology to improve sensor performance. technical indicators to accommodate more