China's sensor and instrument components development focus

Sensors and instrument components are among the most basic components of instrumentation and automation systems. Sensors and instrumentation components are characterized by a wide range of services, a wide variety of products, and a large demand. The improvement of their technological level and product quality will lay the foundation for China's manufacturing informatization.

Status and problems

The technology and products of sensors and instrumentation in China have been greatly improved through development. There are more than 1,600 enterprises and institutions in the country engaged in the research, development and production of sensors and instrument components. However, compared with foreign countries, the product variety and quality level of sensors and meter components in China cannot yet meet the needs of the domestic market. The overall level is still at the level of foreign countries in the early 1990s . The main problems that exist are:

( 1 ) Poor scientific and technological innovation, and the core manufacturing technology lags behind that of foreign countries. There are few products with independent intellectual property rights, and the variety is not complete. The product technology level differs from that of foreign countries by about 15 years.

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

( 3 ) The disconnect between science and technology and production, affecting the transformation of scientific research results, the overall strength is low, and the potential for industrial development is insufficient.

Strategic objectives

By 2020 , the field of sensors and instrumentation should strive to achieve three strategic goals:

- - In industrial control, automobiles, telecommunications, environmental protection as a key service to the sensor, the elastic member, an optical element, as the focus of a dedicated circuit, and the original technology development of proprietary products;

- - with MEMS technology-based, integrated, intelligent and network technology as the basis, to strengthen the manufacturing process and the development of new sensors and instrumentation components of the leading products reach and close to the advanced level of similar foreign products;

- - to increase variety, improve quality and economic efficiency as the main target, accelerate the industrialization, the share of domestic varieties of sensors and instrumentation components 70% to 80%, high-end products of 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: such as normal temperature bonding flip-chip welding, stress-free micro-thin structure packaging, multi-chip assembly process ; New sensors: such as micro-silicon capacitive sensors, micro-silicon mass flow sensors, aerospace dynamic sensors, micro-sensors, automotive pressure, acceleration sensors, environmental protection micro-chemical sensors.

( 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, temperature, humidity four-variable sensors, micro silicon composite Strain pressure sensor, display sensor.

( 3 ) Intelligent technology and intelligent sensor signal wired or wireless detection, transformation processing, logic judgment, function calculation, two-way communication, self-diagnosis and other intelligent technologies ; smart multivariable sensors, smart power sensors and various smart sensors, transmission Device.

( 4 ) Network technology and network sensor sensor network technology ; Network sensor, so that the sensor has industrial standard interface and protocol functions.

Instrumentation components

( 1 ) Development and perfection of new components for elastic components: electrodeposition molding process, welding process ; focus on the development of low-rigidity, large-displacement, long-life micro-precision bellows for aviation and aerospace, and bellows for high-temperature and high-pressure valves ; Develop bellows efficient forming process equipment and performance testing instruments.

( 2 ) Advanced technology for the development of optical components: aspherical optical element design, manufacturing technology, optical multilayer coating technology, and new ion-assisted coating technology.

Develop new optical components for optical fiber communication and digital imaging, such as: micro variable density filters, ultra-narrow band filters, micro lens arrays, large-area polarizing elements, and aspherical glass - plastic hybrid lenses.

( 3 ) Dedicated circuits to improve the design of special circuit integration and personalized services and manufacturing processes ;

Application software curing technology is developed to develop dedicated circuits for signal conversion, compensation, linearization, communications, and network interfaces for intelligent, networked sensors and instruments.