Seven Development Trends of Sensor Technology in China

1. systematization

Systematization refers not to consider the sensor or sensing technology as a separate device or technology, but to apply engineering research methods in accordance with the requirements of information theory and system theory, emphasizing the systematic and synergistic development of sensors and sensing technology.

The sensor is placed in an important part of information recognition and processing technology, and the sensor technology is developed together with computer technology and communication technology. The independence, compatibility and dependence between sensing technology, computing technology and communication technology must be systematically considered. Intelligent networked sensors are one of the main signs of this trend.

2. innovation

Innovation mainly includes the use of new principles, new effects and new technologies.

Such as the use of nanotechnology, the production of nano-sensors. Compared with the traditional sensor, the size is reduced, the accuracy is improved, and the performance is greatly improved, which provides many new methods for the production of the sensor.

The use of quantum effects to develop a sensitive quantum sensor to be measured, such as resonant tunnel diodes, quantum well lasers, quantum interference components, etc., with high speed (1000 times faster than electronic sensitive devices), low consumption (energy consumption is 1000 times lower than electronic sensitive devices), theft, high integration, high efficiency and other advantages.

Development of new sensors using new materials. Such as the use of nano materials, the production of palladium nano 112 sensor, gold nano polymer sensor, carbon nano polymer sensor, resistance strain type nano pressure sensor.

Using the giant magnetoresistance effect of nanomaterials, scientists have developed a variety of "nano-magnetic sensors". Research and development of sensors for special purposes, special environments and special processes. Such as in high temperature, high pressure, corrosion resistance, strong radiation and other environmental F sensor.

Sensors using 3D printing technology. Flexible sensors, quantum sensors, etc.

3. miniaturization

In the field of automation and industrial applications, the sensor itself is required to be as small as possible.

The miniaturization of the sensor means that the characteristic size of the sensitive element is "millimeter (mm)-micrometer (um)-nanometer (nm)" type of sensor. This kind of sensor has the advantages of miniaturization in size and performance, the integration of elements and the diversity of uses, the systematic function and the compound structure.

The miniaturization of the sensor is not only the miniaturization or reduction of the feature size, but a high-tech micro-system with new mechanism, new structure, new function and new function. Its preparation process involves MEMS technology, 1C technology, laser technology, precision ultra-fine processing technology, etc.

4. intelligence

The intelligence of the sensor means that the sensor has artificial intelligence such as memory, storage, thinking, judgment, and self-diagnosis. Its output is no longer a single analog signal, but a digital signal after a microprocessor, and even has an executive control function.

Technology development shows that digital signal processors (DSP) will promote the development of many new next-generation sensor products. With the development of 5G communication, big data, AR, VR, cloud computing, etc., as well as the application of new technologies such as robot automatic driving and artificial intelligence, the world has entered the intelligent era from the original electronic era, and sensors have also ushered in a new intelligent era.

Intelligent sensors are widely used in consumer electronics, new high-end automobiles, industrial detection and control, intelligent medical, intelligent agriculture, intelligent transportation and other fields.

The Accenture Laboratory in San Jose, USA, has developed a sensor called "smart dust. The sensor is extremely small and can measure parameters such as temperature, humidity, and light. The sensor is embedded with a microprocessor, software code, and a wireless communication system. It can be sprayed on trees or other objects. When an abnormality is detected, it can send a signal., Monitor the area.

5. passivity

Sensors are mostly non-electricity to electricity conversion, work can not be separated from the power supply, in the field or away from the power grid, often with batteries or solar power supply, the development of micro-power passive sensors is the inevitable direction of development, both to save energy, but also to improve system life.

6. networking

Network refers to the implementation of TCP/IP protocol in the field of sensors, so that the field measurement and control data on the nearest network, within the scope of the network can publish and share information in real time. To make networked sensors become independent nodes, the key is to standardize the network interface. At present, there are "wired networked sensors" and "wireless networked sensors".

Wireless sensor network is an "intelligent" autonomous measurement and control network system, which is composed of tiny sensor nodes with communication and computing ability, which is located in an unattended monitoring area and has the ability to complete the specified tasks according to the environment. Wireless sensor network is a kind of measurement and control network.

7. industrialization

Accelerate the formation of sensors from R & D to industrial production development model, revealing the law of sensor industrialization, the dialectical relationship between cost and price, industrialization is the key step for Chinese sensors to truly step out of the ivory tower.

Article content source, sensor expert network

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