The development of intelligent vehicle automation is inseparable from the support of various sensor technologies. Various sensors become the hands, eyes, ears, tongue, nose and even the brain of a smart car. It collects all the various measurement data and information that can be felt in the driving process of the car and the environment, and will feel the measurement data and information After classified processing and analysis, information output is carried out to meet the information measurement, transmission, storage, analysis, display, alarm reminder, recording and even control instructions in the process of intelligent automation of automobile driving.
There are many types of automotive sensors, which can be divided into sensing technologies such as vision, distance measurement, speed, force perception, etc. Below we will explain in detail the various sensor technologies that realize auto-driving support:
- Vision sensor technology, such as camera image processing technology, common camera ADAS, 3D radar, laser scanner, etc.
- Distance measurement sensors, also called position measurement sensors, such as millimeter wave radar, laser rangefinder, 2D laser radar, ultrasonic radar, and magnetometer (used to determine direction).
- Force sensors, such as various automobile brake controllers (including AEBS technology), mechanical automation technology, and weight sensors (such as used for truck weighing supervision).
- Speed sensor, that is, gyroscope (used to measure the angular velocity of the car’s deflection and tilt. It can automatically sense vehicle tilt and collision accidents, and can give accident alarm information at the first time, so as to achieve the purpose of timely judgment of accidents and rescue ), acceleration sensor, speed encoder, etc., used for sensing the speed, acceleration, angular velocity of the car itself.
- Temperature and humidity sensors, such as infrared technology, night vision, temperature sensor monitoring, etc.
- Optical sensors can switch between night and day modes for intelligent autonomous vehicles.
- Position sensors, such as GPS, are used for car positioning, driving track record playback, electronic fence, electronic lock and other functions.
- Taste sensor (chemical), such as exhaust emission monitoring.
Various sensor technologies provide basic technical support for the realization of automotive intelligent automatic driving technology, which is the core of automotive active safety technology and provides convenience for drivers. The integration of multiple sensing technologies can form a complete set of vehicles. The data system can be connected with the network system, and at the same time, it can operate independently, even if it leaves the network, it can provide reliable protection to the driver.