Sensor technology is one of the high-tech developments in the world that has attracted attention. It is an important symbol of the development of contemporary science and technology. A sensor is a device that can convert physical quantities, chemical quantities, biomass, etc. into electrical signals. The output signal has different forms. For example: voltage, current, pulse, frequency, etc., can meet the requirements of information transmission, processing, recording, display, control and so on. Therefore, the sensor is an indispensable element in the automatic detection system and the automatic control system. It can correctly sense the measured size and convert it into the corresponding output, which plays a decisive role in the quality of the automatic control system. The development of sensor technology is changing rapidly, especially since the 1980s when humans entered the information age from high industrialization. Sensor technology is developing towards newer and higher technologies. The research and development and application of sensor technology abroad have developed rapidly. They not only attach importance to the development of new products, but also pay attention to the development of materials, design, production process technology and process equipment, and have become an emerging industry. In particular, sensor technology in developed countries such as the United States and Japan is developing fastest. The United States claimed in the 1980s that the world has entered the age of sensors. Japan has listed sensor technology as the founding of the top ten technologies. Developed countries in the world attach great importance to the development of sensor technology.
Sensors are the basic components of industrial measurement and control systems and information systems. The salient features of the new generation of sensors are multifunctionalization, intelligence, digitization, arraying, miniaturization and microsystemization. Sensors are affected by the needs of the whole system, but in turn can promote the development of the whole system. A new sensor appears, and a new complete machine and a new system will follow. Because the sensor is the entrance of the system to obtain information. That is: it serves the whole system. Its demand must be hauled or restricted by the whole system. The higher the degree of automation, the higher the system requirements for sensors. Many developed countries in the world are accelerating the research and development of new sensor technologies, and have made great breakthroughs. The reason is that in today's information age, computer technology and communication technology are developing rapidly. Not only are the requirements on the accuracy, reliability, response speed, and information stars of sensors acquired, but also the cost is low, and Easy to use. Obviously, traditional sensors will gradually be eliminated due to characteristics, functions, volume, cost and other reasons that have been difficult to meet the requirements.
Sensor is an important technological foundation of the new technology revolution and the current information society, and a pioneer of modern technology. It is precisely because of the widespread attention and investment in the development of countries around the world that the development of sensors is very rapid. In the past ten years, the annual growth rate of its production and market demand has more than doubled. The total demand for domestic sensors in my country is also steadily increasing. Therefore, our country should further increase research, development and investment in sensor technology, so that the gap between my country's sensor technology and foreign countries is shortened, thereby promoting the development of my country's instrumentation industry and automation technology.
