Method for identification of vehicles for operating a car park or a parking area
First Claim
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1. A method for identification of vehicles (4) for operating a car park or a parking area, the vehicles having a drive train including a vehicle drive unit, the method comprises:
- recording, with at least one microphone of an identification system, a sound profile emitted by the drive train of the vehicle in at least one speed range, the sound profile being in an acoustic wave range and/or an ultrasonic range;
evaluating, with a central computer of the identification system, the sound profile emitted by the drive train of the vehicle; and
identifying, with the central computer, the vehicle (4) based on the sound profile emitted by the drive train of the vehicle in the acoustic wave range and/or the ultrasonic range in the at least one speed range.
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Abstract
A method for identification of vehicles (4) for operating a car park or a parking area is proposed in the course of which a vehicle (4) is identified at least by the sound profile emitted by the drive train of the vehicle which comprises a vehicle drive unit in the acoustic wave and/or ultrasonic range in at least one speed range.
19 Citations
14 Claims
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1. A method for identification of vehicles (4) for operating a car park or a parking area, the vehicles having a drive train including a vehicle drive unit, the method comprises:
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recording, with at least one microphone of an identification system, a sound profile emitted by the drive train of the vehicle in at least one speed range, the sound profile being in an acoustic wave range and/or an ultrasonic range; evaluating, with a central computer of the identification system, the sound profile emitted by the drive train of the vehicle; and identifying, with the central computer, the vehicle (4) based on the sound profile emitted by the drive train of the vehicle in the acoustic wave range and/or the ultrasonic range in the at least one speed range. - View Dependent Claims (5, 10, 11, 12, 13, 14)
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2. A method for identification of vehicles (4) for operating a car park or a parking area, the vehicles having a drive train including a vehicle drive unit, the method comprises:
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recording, with at least one microphone of an identification system, a sound profile emitted by the drive train of the vehicle in at least one speed range, the sound profile being in an acoustic wave range and/or an ultrasonic range; evaluating, with either a server or a central computer of the identification system, the sound profile emitted by the drive train of the vehicle; identifying, with the central computer, the vehicle (4) based on the sound profile emitted by the drive train of the vehicle in the acoustic wave range and/or the ultrasonic range in the at least one speed range; before or during entry of a vehicle (4) into the car park or the parking area, when the vehicle is not moving with the drive unit running or when a speed which is as constant as possible is maintained within a speed range, recording the sound profile of the vehicle (4) in the acoustic wave range and/or in the ultrasonic range by the at least one microphone (5) and is assigned to this vehicle and the respective speed range, and by the recorded sound profile, creating an acoustic identification signature in the server or the central computer (6), which is based on a frequency spectrum of the recorded sound profile and/or its time variation, after creating the acoustic identification signature, a comparison in a database of the central computer (6) revealing a defined satisfactory agreement with an already created identification signature in a same speed range, recognizes a returning vehicle (4) and the newly created acoustic identification signature, when this differs from the identification signature already obtained in the dataset assigned to this vehicle, for a same speed range, is added to the existing dataset in order to increase the accuracy of the vehicle recognition wherein if a comparison in the database of the central computer (6) does not reveal any defined satisfactory agreement with an already created identification signature in the same speed range, creating a new dataset for a vehicle (4) entering for the first time, which contains the newly created acoustic identification signature for the current speed range and is stored in the central computer (6). - View Dependent Claims (3, 4)
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6. A method for identification of vehicles (4) for operating a car park or a parking area, the vehicles having a drive train including a vehicle drive unit, the method comprises:
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recording, with at least one microphone of an identification system, a sound profile emitted by the drive train of the vehicle in at least one speed range, the sound profile being in an acoustic wave range and/or an ultrasonic range; evaluating, with a central computer of the identification system, the sound profile emitted by the drive train of the vehicle; and identifying, with the central computer, the vehicle (4) based on the sound profile emitted by the drive train of the vehicle in the acoustic wave range and/or the ultrasonic range in the at least one speed range; performing, with the identification system, a vehicle tracking of the vehicles (4) driving into the car park or the packing area, after identification of an incoming vehicle (4) or after creating a dataset in the central computer for a vehicle (4) entering for the first time, detecting, with the at least one microphone or a microphone array arranged in the car park, movement of the vehicle (4) in the car park by means of detection and evaluation of the sound profile emitted by the vehicle (4) in the acoustic wave range and/or in the ultrasonic range, and a parking place (3) of the vehicle in the car park is a location of a last localization of the vehicle (4) when the drive unit is running; and transmitting the sound profiles emitted by the vehicles, recorded by the microphones or the microphone arrays and speed information of the vehicles in real time, to the central computer (6), creating acoustic identification signatures in the central computer (6) by the sound profiles and identifying the vehicles by a comparison of the acoustic identification signatures with the datasets in a database for the respective speed range if there is sufficient agreement, performing a vehicle tracking by means of spatial coordinates of the microphones (5) and for the case that microphone arrays are provided, also by angular information wherein if no identification signatures are stored in a speed range or if a recorded acoustic identification signature differs from the identification signatures for this speed range already contained in the dataset in the case of satisfactory agreement, adding the currently recorded acoustic identification signature to the existing dataset assigned to this vehicle in order to increase the accuracy of the vehicle recognition. - View Dependent Claims (7, 8, 9)
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Specification