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1. WO1992018879 - AIDE AUX MANOEUVRES DE PARCAGE DES VEHICULES

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

- 8 - Claims

1. A vehicle parking aid comprising a housing arranged to be fixed at an end of a" parking area,^ a transmitter mounted in the housing for transmitting signals towards an approaching vehicle, a receiver mounted in the housing for receiving the transmitted signals after they have been reflected from the vehicle, timer means for measuring the times elapsed for passage of the signal from the transmitter to the receiver, and computing means for determining from the elapsed times the separation of the vehicle from the end of the parking area and for energising a visual indicator when the separation corresponds to a minimum parking distance for the vehicle, including a radiation sensor connected to the parking aid for responding to signals transmitted from or reflected by the vehicle which are independent of changes in the ambient light and for turning on the parking aid.

2. A vehicle parking aid according to claim 1, in which the radiation sensor is an acoustic sensor arranged to respond to sound generated by a vehicle horn.

3. A vehicle parking aid according to claim 1, in which the radiation sensor is a light sensor.

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- 9 - 4. A vehicle parking aid according to claim 1, in which the sensor is a radio signal sensor.

5. A vehicle parking aid according to any one of claims 1 to 4 , in which the sensor is arranged to respond only to a chosen pattern of signals so as to discriminate from extraneous signals in the general vicinity of parking aid.

6. A vehicle parking aid according to any of claims 1 to 5, in which the parking aid is turned off automatically a few minutes after it has been turned on.

AMENDED CLAIMS
..received by the International Bureau on 3 September 1992 (030992)- original claim 1 amended; other claims unchanged (1 page)]

1. A vehicle parking aid comprising a housing arranged to be fixed at an end of a parking area, a transmitter mounted in the housing for transmit ing signals towards an approaching vehicle, a receiver mounted in the housing for receiving the transmitted signals after they have been reflected from the vehicle, tinier means for measuring the times elapsed for passage of the signal from the transmitter from the elapsed times the separation of the vehicle from the end of the parking area and for energising a visual indicator when the separation corresponds to a minimum parking distance for the vehicle, in which the parking aid is normally turned off, and including a radiation sensor connected to the parking aid for responding to signals transmitted from or reflected by the vehicle which are independent of changes in the ambient light and for turning on the parking aid.

2. A vehicle parking aid according to claim 1, in which the radiation sensor, is an acoustic sensor arranged to respond to sound generated by a vehicle horn.

3. A vehicle parking aid according to claim 1, in which the radiation sensor is a light sensor.