How does car parking sensor work

[kingdom007]

How does car parking sensor assist system work ?Carsda Parking Sensor system (http://www.carsda.com)consists of 4 - 8 wide angle sensors - 2 or 4 covering the front of the vehicle (6 or 8 sensor systems only) and 4 covering the rear of the vehicle. The system will warn the driver both audibly and visually (models with display ) if there is an object behind or in front of the vehicle and how far the object is (models with display only). The beeper alerts the driver by beeping faster when vehicle gets closer to an obstacle while the display (systems with display only) shows the actual distance of an obstacle from the vehicle. The control unit, visual display, and the two or four front sensors are powered by +12V from ignition, brake light, or ACC depending on different systems (6 or 8 sensor systems only) while the four rear sensors are powered by +12V from backing up light.

[ugge8548]

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