PT
PT
PT
PT Reversing
Reversing
Reversing
Reversing parking
parking
parking
parking assistance
assistance
assistance
assistance system
system
system
system
- 103 -
Instruction
Instruction
Instruction
Instruction and
and
and
and Operation
Operation
Operation
Operation
Operating
Operating
Operating
Operating principle
principle
principle
principle of
of
of
of the
the
the
the reversing
reversing
reversing
reversing radar
radar
radar
radar
1. Schematic diagram of reversing radar system
2. Schematic diagram of ultrasonic distance
measurement
3. The reversing radar controller sends ultrasonic
signals to the sensor in order to drive the sensor for
ultrasonic wave generation; Ultrasonic signals are
received by the sensor via obstacle reflection and
the internal circuit of the sensor amplifies the
reflected signals and sends them to the controller.
After analysis and calculation of the controller, the
distance information of obstacle is processed by the
controller and the buzzer is driven to beep. For
obstacles at different distances from the vehicle,
the buzzer is controlled by the controller to beep in
different frequencies thus to remind the driver of
obstacles.
4. F actors which may affect the operation of reversing
radar:
� Temperature
� Air pressure
� Humidity
Sensor Sensor Sensor Sensor
Buzzer
Controller
assembly
Display ( reserved )
Obstacle
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