Method for assigning tire modules to wheel positions of a tire pressure monitoring system for a vehicle and device for monitoring tire pressure
First Claim
1. A method for assigning tire modules to wheel positions of a tire pressure monitoring system for a vehicle, with each tire module having at least one pressure sensor and one transmitter, which transmits a signal to a vehicle-side receiver with a connected analysis unit, in which the signals are analyzed, wherein assignment is activated by a sensor, when the vehicle or wheel speed is above a reference value, after this each tire module transmits a number of signals over a predetermined interval together with an identifier specific to a tire, the signals, which produce a time-based intensity pattern due to wheel rotation, are received by a receiver, the respective intensities are detected and the identifier extracted, and wherein the intensity patterns received by the receiver are compared with reference models, with a reference model being stored for each wheel position and in the event of at least broad correspondence, the identifiers assigned to the intensity patterns are assigned to the wheel positions.
1 Assignment
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Accused Products
Abstract
Tire modules (3) are assigned to wheel positions when the wheel speed is above a threshold value. Each tire module (3) transmits a number of signals together with at least one tire-specific identifier over a predetermined period. An antenna (5) positioned asymmetrically in respect of the wheel positions receives the intensity patterns based on wheel rotation and compares these intensity patterns with reference models. In the case of at least broad correspondence with a specific reference model the respective intensity pattern and the associated identifier are assigned to a wheel position.
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Citations
17 Claims
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1. A method for assigning tire modules to wheel positions of a tire pressure monitoring system for a vehicle, with each tire module having at least one pressure sensor and one transmitter, which transmits a signal to a vehicle-side receiver with a connected analysis unit, in which the signals are analyzed, wherein
assignment is activated by a sensor, when the vehicle or wheel speed is above a reference value, after this each tire module transmits a number of signals over a predetermined interval together with an identifier specific to a tire, the signals, which produce a time-based intensity pattern due to wheel rotation, are received by a receiver, the respective intensities are detected and the identifier extracted, and wherein the intensity patterns received by the receiver are compared with reference models, with a reference model being stored for each wheel position and in the event of at least broad correspondence, the identifiers assigned to the intensity patterns are assigned to the wheel positions.
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7. Device for monitoring the tire pressure of tires on a vehicle, comprising:
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a tire module with at least one pressure sensor and one transmitter with a transmitter antenna, at least one vehicle-side receiver, the receiver antenna of which is positioned asymmetrically in respect of the wheel positions, and a sensor, which measures wheel acceleration, wheel speed or vehicle speed and which triggers an activation signal for the transmission of signals from the tire-side transmitters to the vehicle-side receiver over a predetermined period, when a reference value has been exceeded. - View Dependent Claims (8, 9, 10, 11)
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12. A method for assigning tire modules to wheel positions of a tire pressure monitoring system for a vehicle, with each tire module having at least one pressure sensor and one transmitter, which transmits a signal to a vehicle-side receiver with a connected analysis unit, in which the signals are analyzed, the method comprising the steps of:
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activating the assignment by a sensor, when the vehicle or wheel speed is above a reference value, transmitting a number of signals over a predetermined interval together with an identifier specific to a tire by each tire module, receiving the signals, which produce a time-based intensity pattern due to wheel rotation, by a receiver, detecting the respective intensities and extracting the identifier, and comparing the intensity patterns with reference models, with a reference model being stored for each wheel position and in the event of at least broad correspondence, assigning the identifiers assigned to the intensity patterns to the wheel positions. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification