Current situation and development of the hottest s

2022-08-21
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Current situation and development of sensors and instrument components

sensors and instrument components are one of the most basic components of instruments and automation systems. Sensors and instrument components have the characteristics of wide service range, wide variety and large demand. The improvement of their technical level and product quality will lay the foundation for the informatization of China's manufacturing industry

current situation and problems

the technology and products of sensors and instruments in China have been greatly improved through development. More than 1600 enterprises and institutions across the country are engaged in the research, development and production of sensors and instrument components. However, compared with foreign countries, China's mission principle is that the product variety and quality level of oil supply sensors and instrument components from high-pressure oil pumps to mission cylinders cannot meet the needs of the domestic market, and the overall level is still at the level of foreign countries in the early 1990s. The main problems are:

(1) poor scientific and technological innovation, core manufacturing technology seriously lags behind foreign countries, few products with independent intellectual property rights, incomplete varieties, product technology as early as 2004, the technical level is about 15 years away from foreign countries

(2) the investment intensity is low, the scientific research equipment and production process equipment are backward, the achievement level is low, and the product quality is poor

(3) science and technology are divorced from production, which affects the transformation of scientific research achievements. The comprehensive strength is low, and the industrial development momentum is insufficient

strategic objective

the real reason why it can always maintain a rapid and better development trend from 20 to 20 years, the field of sensors and instrument components should strive to achieve three strategic objectives:

-- develop original technologies and products with independent intellectual property rights with industrial control, automobile, communication and environmental protection as the key service areas, and sensors, elastic components, optical components and special circuits as the key objects

-- Based on MEMS technology and relying on integrated, intelligent and networking technology, strengthen the development of manufacturing technology and new sensors and instrument components, so that the leading products can reach and approach the advanced level of similar foreign products

-- accelerate industrialization with the main goal of increasing varieties, improving quality and economic benefits, so that the variety share of domestic sensors and instrument components can reach 70%~80%, and high-end products can reach more than 60%

development focus

sensor technology

(1) MEMS process and a new generation of solid-state sensor microstructure manufacturing process: deep reactive ion etching (DRIE) process or IGP process; Packaging process: for example, 2. Factors that need to be considered in the selection of material change experimental machine, normal temperature bonding flip chip welding, stress-free thin structure packaging, multi chip assembly process; New sensors: such as micro silicon capacitance sensors, micro silicon mass flow sensors, dynamic sensors and micro sensors for aerospace, pressure and acceleration sensors for automobiles, micro chemical sensors for environmental protection, etc

(2) integrated process and multivariable composite sensor microstructure integrated manufacturing process; Multivariable composite sensors for industrial control, such as pressure, static pressure, temperature three variable sensors, air pressure, wind force, temperature, humidity four variable sensors, micro silicon composite strain pressure sensors, display sensors

(3) intelligent technology and intelligent sensor signal wired or wireless detection, transformation processing, logical judgment, function calculation, two-way communication, self diagnosis and other intelligent technologies; Intelligent multivariable sensor, intelligent electric quantity sensor and various intelligent sensors and transmitters

(4) networking technology and networking sensor make the sensor have industrialized standard interface and protocol functions

instrument components

(1) develop and improve new forming processes for elastic components: electrodeposition forming process, welding forming process; Focus on the development of micro precision bellows with low stiffness, large displacement and long life for aviation and aerospace, and bellows for high temperature and high pressure valves; Develop high-efficiency forming process equipment and performance testing instrument for bellows

(2) advanced technology for optical element development: aspheric optical element design, manufacturing technology, optical multilayer radiation coating technology and new ion assisted coating technology

develop new optical elements for optical fiber communication and digital imaging. Such as: Micro variable density filter, ultra narrow band filter, microlens array, large area polarization element, aspheric glass plastic hybrid lens

(3) design technology and manufacturing process for improving the integration of special circuits and personalized services

apply software solidification technology to develop special circuits for signal transformation, compensation, linearization, communication, network interface, etc. suitable for intelligent and networked sensors and instruments

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