The market for Chinese sensors has continued to grow in recent years, with a general growth rate of more than 15%. Sales in 2003 were 18.6 billion yuan, a year-on-year growth rate of 9%. It is expected to increase to 50.6 billion dollars in 2008. In 2003, China's sensor applications in the four major areas of industrial and automotive electronics, communications electronics, consumer electronics, special equipment, of which industrial and automotive electronics accounted for 33.5% of the market. Due to reform and opening up, China's huge market has attracted manufacturers from various countries, such as Siemens, Yokogawa, Honeywell, Omron, Bonner, etc., which has brought great convenience to end users and industrial equipment manufacturers. Although the production of domestic sensors and instrumentation has developed, it is far from keeping up with the demand of the situation. The scale of sensor production and R&D in various countries is constantly expanding. There are about 1,300 manufacturers that produce and develop sensors in the United States, more than 100 research institutes and institutions, and 800 in Japan. In recent years, China has established research and development bases such as the State Key Laboratory of Sensor Technology and the National Key Laboratory of Micro/Nano, and initially established the sensor and sensor industry. In 2000, the total output exceeded 1.3 billion. At present, there are 1,688 sensors in China. And research and development enterprises, of which MEMS has been developed and produced more than 50. By the end of the "10th Five-Year Plan", the total annual output of sensitive components and sensors has reached 2 billion.
China has also taken a new path in participating in the international sensor market competition, such as the "Sensor National Engineering Research Center of Shenyang Instrument Research Institute." It has exported 400,000 force-sensitive sensor chips to the United States.
Sensor technology includes more than 30 technologies in four aspects: sensitive mechanism, sensitive materials, process equipment and measurement technology. With the development of microelectronics technology, sensor technology has developed rapidly. The power of R&D in China still needs a lot of investment. In particular, it is necessary to strengthen the innovative development of sensors with independent intellectual property rights. The transformation of scientific research results and the industrialization of sensor production are even more urgent issues in China. In the case of mass production, the performance of sensor products (mainly stability and reliability) is controlled, so that the qualification rate meets the requirements of the commercial industry. It is necessary to have advanced manufacturing processes and high-level process equipment. Therefore, efforts should be made to develop special process equipment to solve the "bottleneck" problem of sensor production industrialization. In the application of sensors, especially the application of new sensors, it has to be vigorously promoted. Reform and opening up have created market economy conditions, and various industrial equipments have applied advanced sensors, which has expanded the sensor market and also enabled China's new sensor production industry. There is motivation.
In the process of industrialization of sensor production, we should not relax in the introduction of international technology and independent innovation. In the introduction of foreign advanced technology, it can improve its own technology, but also meet the needs of the domestic market, forming a sensor production industry scale. For example, Yokogawa's recently released EJX multivariable transmitter is an example that can be considered for introduction of technology. It has high precision (0.025%) and high intelligence. It uses fieldbus technology because it can put mass, flow and medium pressure. And various variables and information such as catheter blockage diagnosis, vapor body thermal diagnosis and orifice wear condition are transmitted to the central control room via the field bus; it is beneficial to ensure production and supply equipment maintenance information and ensure safe operation. The development of the device is in line with the transformation of automation system management and control integration. Only when the information source has strong capabilities and information is rich, can informationization better promote the development of productivity. In addition, the vast heavy chemical industry market enables new sensor transmitters to meet the requirements of mass production in many industries such as petrochemical, metallurgy and electric power.
Sensors and instrumentation trends <br> <br> In recent years, the sensor is in the traditional transition to the new sensor development stage. The new sensor is characterized by miniaturization, digitization, intelligence, multi-functionality, 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 systems (MEMS) technology and has been successfully applied to silicon devices to form silicon pressure sensors (such as the EJX transmitter described above).
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