A method of determining a vehicle position of a vehicle 1 is provided using an ultrasonic beacon 20. An ultrasonic sensor 12 of vehicle 1 transmits an encoded ultrasonic signal 40 which comprises a transmission code. Ultrasonic signal 40 is received by beacon 20 and, in response to detection of ultrasonic signal 40, beacon 20 transmits a position signal 42 which is received by ultrasonic sensor 12 of vehicle 1. The vehicle position is determined relative to the position of beacon 20 using a travel time which has elapsed from transmission of ultrasonic signal 40 to reception of position signal 42. A beacon 20 and driver assistance system 10 suitable for use with the method are also disclosed; the system is particularly suitable for accurate movement of a vehicle to a target position 38, which may be a garage 32 where vehicle 1 may park. Beacon 20 may have an energy-saving mode and may be awakened on detection of an activation code in signal 40.
Method of determining a vehicle position
2021-04-28
Patent
Electronic Resource
English
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