Device and method for determining a wheel position
First Claim
Patent Images
1. A device for determining a position of a wheel on a vehicle, the device comprising:
- an evaluation unit;
a tire electronic system disposed on the wheel for measuring a tire status variable and wirelessly transmitting measured tire status variables to said evaluation unit, said tire electronic system having a long-wave receive unit and configured for enhancing a receive response of said long-wave receive unit for a predefined time window on transmission of a message with a tire status variable;
at least one long-wave antenna of a vehicle access system disposed in the vehicle; and
a control device provided in the vehicle and configured to activate at least one of said long-wave antenna, said control device being activated by said evaluation unit for transmitting a signal via said at least one long-wave antenna, the signal being intended for said long-wave receive unit in the wheel;
said evaluation unit configured for sending a start signal to said control device on receipt of the message with the tire status variable, to transmit the signal intended for said long-wave receive unit;
said long-wave receive unit configured to transmit a response signal wirelessly to said evaluation unit on receipt of the signal; and
said evaluation unit configured for determining a position of the wheel of the vehicle based on the response signal.
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Abstract
A device and a method for determining a wheel position on a vehicle, for example an automobile. Long-wave antennae of a vehicle access system already present in the vehicle transmit a signal, which is measured by a long-wave receive unit of a tire electronic system and used to detect the position of the wheel on the vehicle. The electrical or magnetic receive field strength of the signal of a specific long-wave antenna for example is in particular detected by a tire electronic system and used to determine the position of the wheel on the vehicle.
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Citations
15 Claims
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1. A device for determining a position of a wheel on a vehicle, the device comprising:
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an evaluation unit;
a tire electronic system disposed on the wheel for measuring a tire status variable and wirelessly transmitting measured tire status variables to said evaluation unit, said tire electronic system having a long-wave receive unit and configured for enhancing a receive response of said long-wave receive unit for a predefined time window on transmission of a message with a tire status variable;
at least one long-wave antenna of a vehicle access system disposed in the vehicle; and
a control device provided in the vehicle and configured to activate at least one of said long-wave antenna, said control device being activated by said evaluation unit for transmitting a signal via said at least one long-wave antenna, the signal being intended for said long-wave receive unit in the wheel;
said evaluation unit configured for sending a start signal to said control device on receipt of the message with the tire status variable, to transmit the signal intended for said long-wave receive unit;
said long-wave receive unit configured to transmit a response signal wirelessly to said evaluation unit on receipt of the signal; and
said evaluation unit configured for determining a position of the wheel of the vehicle based on the response signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for determining a position of a wheel on a vehicle, which comprises the steps of:
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transmitting a signal intended for a long-wave receive unit of a tire electronic system using at least one long-wave antenna present in the vehicle, a control device activating the transmitting of the signal when the control device receives a start signal from an evaluation unit, the evaluation unit generating the start signal on receipt of a message with a tire status variable from the tire electronic system, the tire electronic system enhancing a receive response of the long-wave receive unit for a predefined time window on transmission of the message with the tire status variable;
generating a response signal from the signal received by the tire electronic system via the long-wave receive unit;
transmitting the response signal to the evaluation unit; and
detecting the position of the wheel on the vehicle by the evaluation unit based on the response signal. - View Dependent Claims (13, 14, 15)
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Specification