Parking sensor - description
- Make
- Fiat
- Model
- Doblò Factory Service Manual
- Year
- 2000–2010
- Section
- Electrically activated devices › Parking sensor - description
PARKING SENSOR - DESCRIPTION
Description
The veihcle has a device that 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.
It operates according to the ultrasound sonar principle; four ultrasound transducers are located inside 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 prepares to receive signals from the sensors.
The control unit emits a signal with an intermittent tone via the speaker with the frequency increasing as the rear of the vehicle approaches the obstacle. When the distance from the obstacle is less than 25 cm. the sound becomes acute and constant.
If the distance measured from the obstacle increases or remains constant for 3 seconds (vehicle stationary) or reverse gear is engaged, the sound stops.
The vehicle is equipped with a device that allows easy manoeuvring whilst parking: when reverse gear is engaged, it signals to the driver that an obstacle, which may be outside of the range of vision, is being approached.
It works on a sonar ultrasound principle; four ultrasound transducers are located inside the rear bumper.
They send signals to a control unit which processes this information determining the distance of possible obstacles.
A speaker controlled by the control unit emits an intermittent sound, proportional to the distance of the obstacle detected.
The control unit is activated with reverse gear engaged: in these conditions the transducers are energized and prepared to receive the signals from the sensors.
The control unit produces a signal with intermittent tone via the speaker and the frequency increases as the rear of the vehicle gets closer to the obstacle.
When the distance from the obstacle goes below 25 cm, the sound becomes high-pitched and constant.
If the distance measured from the obstacle increases or remains constant for 3 seconds (vehicle stationary) or reverse gear is disengaged, the sound stops.
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