Onboard sensors are core components of automotive electronic systems. Their primary function is to sense changes in the vehicle's internal and external environment and convert this information into electrical signals for processing by the control system. Depending on the object being detected, onboard sensors can be categorized into several types.
Firstly, temperature sensors are mainly used to monitor engine coolant temperature, battery temperature, and the ambient temperature inside the vehicle. Secondly, pressure sensors are widely used in tire pressure monitoring systems, fuel systems, and braking systems. Speed sensors are responsible for detecting wheel rotation speed and vehicle speed, providing data support for ABS and ESP systems.
With the development of intelligent driving technology, environmental perception-type onboard sensors have received widespread attention. These include cameras, LiDAR, millimeter-wave radar, and ultrasonic sensors. These devices help vehicles recognize their surroundings, enabling functions such as automatic following, lane keeping, and automatic parking.
In the field of new energy vehicles, onboard sensors also play a crucial role in battery management. By monitoring voltage, current, and temperature data in real time, they ensure the safe and stable operation of the power battery. It can be said that onboard sensors have penetrated every aspect of vehicle operation and are a vital foundation for achieving automotive intelligence.