TBS-201 Wireless Vehicle detector
4
8.
Working Principle
8.1. Working Principle
The frame and shell of a car are made of ferromagnetic material (various types of steel),
which make disturbance to surrounding magnetic field. According to this characteristic,
the parking sensor determines whether there is a car in the parking space by sensing the
magnetic field change. With build-in dual-sensors (geomagnetic sensor and microwave
sensor), powerful signal analysis and processing algorithm, the detector offers enhanced
information, especially acquire complementary and optimization to the reverse sensitivity
characteristics of chassis with different height.
Compared with traditional device with single sensor, TBS-201 can greatly improve the
detection accuracy and reduce information loss. The detection mechanism is show as
below.
1)
Geomagnetic sensor detects the magnetic field lines which distorted by ferrous
metal of the vehicle, magnetic field strength obtained as the vehicle presence and
movement with the magnetic sensor.
2)
Microwave Radar
module emits wireless modulation wave and receives the
reflective signals to determine if the parking spot is occupied and vacant
