PARKING SENSOR - Description

Description

This device allows maximum ease of manoeuvring during parking; with reverse gear engaged, it indicates if the driver is approaching an obstacle that could be outside his field of vision, as illustrated in the diagram below.

The system operates in accordance with the ultrasound 'sonar' principle: four ultrasound transducers are located in the rear bumper. They send signals to a control unit, which processes this information and determines the distance of possible obstacles.

A loudspeaker controlled by the control unit emits an intermittent tone, proportional to the distance of the obstacle detected.

The control unit is activated when reverse gear is engaged: under these conditions it energizes the transducers and sends them a signal request, and receives response signals from them.

The control unit emits a signal with intermittent tone: the frequency of this sound increases as the bumper comes close to an obstacle: when the calculated distance falls below 25 cm, the sound becomes acute and constant.

If the distance measured from the obstacle increases, or if the driver disengages reverse gear, the sound stops. If the distance measured from the obstacle remains constant, the sound ceases after about 3 seconds.

For more details and information on the operation of the system, Characteristic of working principle 5580H parking obstacle detection device

The control unit is located inside the luggage compartment, on the left side; beside the control unit there is an acoustic device. beside the control unit there is an acoustic device. The system is supplied by the reversing lights circuit See E2022 REVERSING LIGHTS.

The parking sensor control unit comes with a self-diagnostic function. when a tester (Examiner or other instrument) is connected to the control unit, self-diagnostic data can be read (parameters, errors) or active testing can be carried out.