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,

The signal that the reversing light has been switched on See E2022 REVERSING LIGHTS is managed by the Body Computer which forwards this information to the parking sensor control unit via the CAN network.

The system is supplied via a circuit protected by a specific fuse in the underfacia control unit.