The chassis control sensor is used in the transmission control system, suspension control system, power steering system, brake anti-lock system and other chassis control system in the sensor. Although these sensors are distributed in different systems, but the working principle and the corresponding sensor in the engine is the same. Moreover, with the automotive electronics control system Sensor to improve the degree of integration and CAN-BUS technology is widely used, the same sensor can not only provide the engine control system signal, but also for the chassis control system to provide the signal.
Automatic transmission system sensors are: speed sensor, accelerator pedal position sensor, acceleration sensor, throttle position sensor, engine speed sensor, water temperature sensor, oil temperature sensor. Brake anti-lock system with sensors are: wheel speed sensor, speed sensor; suspension system sensors are: speed sensor, throttle position sensor, acceleration sensor, body height sensor, steering wheel angle sensor; power steering system Sensors are: speed sensors, engine speed sensors, torque sensors, hydraulic sensors and so on.
Body control sensors are mainly used to improve the safety of the car, reliability and comfort. Because of its working conditions are not as bad as the engine and chassis, the general industrial sensor can be applied to a little improvement. Mainly used for automatic air conditioning system temperature sensor, humidity sensor, air volume sensor, sunshine sensor; for the airbag system Temperature Sensor in the acceleration sensor; for door lock control in the vehicle speed sensor; for brightness automatic control of the light sensor; An ultrasonic sensor or a laser sensor for use in reversing control, a distance sensor for holding a vehicle distance, an image sensor for eliminating a driver's dead zone, and the like.
Sensors for navigation systems With the use of GPS / GIS (Global Positioning System and Geographic Information System) navigation systems in automobiles, navigation sensors have been developing rapidly over the years. Navigation system sensors are: to determine the direction of the car driving compass sensors, gyroscopes and speed sensors, steering wheel angle sensors.
Due to the important role of automotive sensors in the automotive electronic control system and the rapid growth of market demand, the world of its theoretical research, new materials applications and new product development are very seriously. The future of automotive sensor technology, the overall trend is miniaturization, multi-functional, integrated and intelligent.
Micro-sensors based on the development of semiconductor integrated circuit technology from the MEMS, micro-sensors using micro-machining technology will be micron-level sensitive components, signal processors, data processing devices packaged in a fast chip, due to the small size, cheap, Easy to integrate and other characteristics, can significantly improve the system test accuracy. At present the technology is maturing, you can produce a variety of sensitive and detect the amount of mechanical, magnetic, heat, chemical and biomass micro-sensors. Due to the advantages Pressure Sensor of MEMS-based micro-sensors in reducing the cost of automotive electronic systems and improving their performance, they have begun to gradually replace sensors based on traditional electromechanical technology.
Multifunctioning means that a sensor can detect two or more characteristic parameters or chemical parameters, thereby reducing the number of automotive sensors and improving system reliability. Integration refers to the use of IC manufacturing technology and fine processing technology to produce IC-type sensors. Intelligentization refers to the combination of sensors and large scale integrated circuits, with CPU, with intelligent role to reduce the complexity of the ECU, reduce its size, and reduce costs.
In short, with the development of electronic technology and the growing use of automotive electronic control systems, automotive sensor market demand will maintain rapid growth, miniaturization, multi-functional, integrated Speed Sensor and intelligent sensors will gradually replace the traditional sensor, The mainstream of the sensor.