Read car sensor market

Automotive electronic control system generally follow the perception - control - execution of work processes. The working state of the sensor acquisition system as sensing unit, control unit, sensor signal processing and calculating the output control instruction, eventually completed by performing unit action accordingly.

Vehicle during operation, the steering wheel Angle sensor information monitoring of the steering wheel Angle and torque, torque wheel speed sensor to monitor the wheel rotational speed, the controller (ECU) through CAN bus real-time sensor signal, and according to the specific logic signal real-time processing, the aid of an ideal torque is calculated, at last, by MOSFET control motor, realize the power effect.

Auto power, chassis, body and electrical system, the vast majority of the working principle of the electronic control has the similar from the perception, control to perform link, semiconductor devices are everywhere, including perception system of sensors, control links of microcontroller (MCU), communication chip (CAN/LIN, etc.), AD converter (A/D), perform link of power devices (MOSFET, IGBT, DCDC), etc. The sensor but also the opportunities of the car.

Car sensors can be divided into two categories, vehicle awareness, environmental awareness. Power, chassis, body and electrical system of sensors belong to the category of vehicles perception, ADAS, and unmanned systems introduced in on-board camera, millimeter wave radar, laser radar belongs to the category of environmental perception. This article focuses on the vehicle sensor perception.

According to the working principle of the sensor can be mainly divided into four categories, MEMS, magnetic, chemical, temperature we statistical traditional gasoline car MEMS sensor exceeds 50, more than 30 magnetic sensor, combined accounted for about 90%.

Competition generally higher concentration to each type of sensor, mainstream companies generally at about five, such as MEMS pressure sensor suppliers mainly for Bosch, Sensata, Infineon, NXP, Denso unit, magnetic sensor suppliers mainly NXP, Infineon, Allegro, TDK - Micronas, Melexis, mainly Bosch, NTK gas sensor suppliers.

Sensors in the enterprise, both Bosch, Infineon, NXP these giants, product line complete, the complete industrial chain, from chip design, production, to sensor product research and development, form a complete set, all have strong capacity; Also have Allegro, Melexis, ST, NTK specialise in some areas or industrial chain link, the relatively moderate, also have strong market competitiveness.

According to our statistics, at present, the taichung high gasoline car has more than 90 sensors, bicycle value more than 2000 yuan. The drivetrain around 45 to 60, bike value of 1000-1700