Method for the Measurement and Analysis of Tyre Air Pressure with Allocation of Wheel Positions and System for Tyre Air Pressure Measurement
First Claim
1. A method measuring and analyzing tire air pressure according to a wheel position of a vehicle, comprising the steps of:
- coupling each of a plurality of wheels of the vehicle to an air pressure checking device, an LF receiver, in particular a an analysis unit, and an RF-transmission device; and
allocating an individual wheel code to each of the plurality of wheels;
providing a LF signal to the LF receiver by an LF transmission device of a central unit;
analyses analyzing the amplitude of the LF signal to determine a wheel rotation rate for each of the plurality of wheels;
sending a RF signal to the central unit, the RF signal being coupled with information about the wheel rotation rate and the individual wheel code;
determining the wheel position for each of the plurality of wheels using measurement device according to the wheel rotation rate; and
enabling the air pressure checking device according to the individual wheel code to sense the tire air pressure associated with the wheel position.
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Accused Products
Abstract
In a method for the measurement and analysis of tyre air pressure with an allocation of wheel positions (I, II, III, IV) of a vehicle (1) for analysis in a tyre air pressure measurement system each wheel (2) of the vehicle (1) is allocated an air pressure checking device (10), an LF receiver (11), in particular a magnetic field strength receiver, an analysis unit (13), an RF-transmission device (12) and an individual wheel code. The LF receiver (11) receives electrical LF signals from an LF transmission device (4) of a central unit (3) arranged in the vehicle (1), the analysis unit (13) analyses the received signal amplitudes and from these determines a wheel rotation rate and the RF transmission device (12) of the wheel (2) sends RF signals with information about the wheel rotation rate and the individual wheel code to the central unit (3) of the vehicle (1). The central unit (3) determines the wheel position (I, II, III oder IV) of the wheel (2) using another measurement system (7) and allocates the air pressure checking device (10) and its individual wheel code to the known wheel position (I, II, III or IV) on the vehicle (1). A tyre air pressure measurement system has a central unit (3) arranged in a vehicle (1) with an LF transmission device (4), an RF receiver device (5) and a central analysis device (6). An air pressure checking device (10) arranged on each wheel (2) of the vehicle (1), an LF receiver device (11), RF transmission device (12) and analysis unit (13) for determining a rotation rate using a periodically varying amplitude of the received LF signal, and a measurement system (7) for measuring the wheel rotation rate at each wheel (2) and/or for determining the type of bend are additionally provided.
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Citations
13 Claims
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1. A method measuring and analyzing tire air pressure according to a wheel position of a vehicle, comprising the steps of:
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coupling each of a plurality of wheels of the vehicle to an air pressure checking device, an LF receiver, in particular a an analysis unit, and an RF-transmission device; and allocating an individual wheel code to each of the plurality of wheels; providing a LF signal to the LF receiver by an LF transmission device of a central unit; analyses analyzing the amplitude of the LF signal to determine a wheel rotation rate for each of the plurality of wheels; sending a RF signal to the central unit, the RF signal being coupled with information about the wheel rotation rate and the individual wheel code; determining the wheel position for each of the plurality of wheels using measurement device according to the wheel rotation rate; and enabling the air pressure checking device according to the individual wheel code to sense the tire air pressure associated with the wheel position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A tire air pressure measurement system in a vehicle, comprising:
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a central unit that further comprises an LF transmission device, an RF receiver device and a central analysis device; a plurality of wheels, each wheel of the plurality of wheels being coupled with an air pressure checking device, a LF receiver device, a RF transmission device and an analysis unit for determining a wheel rotation rate using a periodically varying amplitude of a LF signal that is provided by the LF transmission device in the central unit; and a measurement device for measuring the wheel rotation rate on each wheel and determining a type of bend. - View Dependent Claims (11, 12, 13)
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Specification