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Automobile sensor is one of the core contents in the field of automobile electronics technology. This paper briefly introduces the application and development of automobile sensors in China, mainly introduces several main sensors in automobiles, and looks forward to the development trend.

As the information source of automobile electronic control system, automobile sensor is the key component of automobile electronic control system, and it is also one of the core contents in the field of automobile electronic technology. Automobile sensors measure and control various information such as temperature, pressure, position, speed, acceleration and vibration in real time and accurately. The key to measure the level of modern limousine control system lies in the number and level of its sensors. At present, about 100 sensors are installed on a domestic ordinary family car, while the number of sensors on luxury cars is as high as 200.

In recent years, the MEMS technology developed from the semiconductor integrated circuit technology is becoming more and more mature. With this technology, various micro-sensors that can sense and detect mechanical quantities, magnetic quantities, thermal quantities, chemical quantities and biomass can be made. These sensors have small volume and energy consumption, can realize many brand-new functions, are convenient for mass and high-precision production, and are easy to form large-scale and multifunctional arrays, which is very suitable for automobile applications.

The large-scale application of micro-sensors will not be limited to engine combustion control and airbags. In the next 5-7 years, applications including engine operation management, exhaust gas and air quality control, ABS, vehicle power control, adaptive navigation and vehicle driving safety system will provide a broad market for MEMS technology.

Since the 1980s, the domestic automobile instrument industry has introduced foreign advanced technology and its matching sensor production technology, which has basically met the matching needs of domestic small-batch and low-level vehicles. Because it started late, it has not yet formed serialization and matching, and has not yet formed an independent industry, and it is still attached to automobile instrument enterprises.