Method and apparatus for a remote tire pressure monitoring system
First Claim
1. A programming method for a remote tire monitor system of a vehicle, the method comprising:
- (a) applying a relatively low frequency activation signal from an exciter positioned proximate the vehicle to a coil of a tire monitor of the vehicle;
(b) at the exciter, detecting a data signal from the tire monitor, the data signal produced by modulating a relatively low frequency tire monitor signal with tire data produced in response to a measured tire parameter;
(c) at the exciter, receiving the tire data from the data signal;
(d) downloading the tire data from the exciter to a receiving unit of the vehicle.
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Accused Products
Abstract
A tire characteristic monitoring method allows automatic programming of tire position information in a remote tire pressure monitoring system (10). The method includes, from a remotely located exciter (16) using a primary coil (18) to transmit a relatively low frequency signal to a secondary coil (L1) of a tire monitor (12) associated with a tire of a vehicle. The method further includes the step of, at the tire monitor, in response to the relatively low frequency signal, transmitting a relatively high transmitting signal to convey data. The data are received at the exciter and subsequently loaded into a receiving unit (14) of the vehicle.
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Citations
17 Claims
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1. A programming method for a remote tire monitor system of a vehicle, the method comprising:
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(a) applying a relatively low frequency activation signal from an exciter positioned proximate the vehicle to a coil of a tire monitor of the vehicle;
(b) at the exciter, detecting a data signal from the tire monitor, the data signal produced by modulating a relatively low frequency tire monitor signal with tire data produced in response to a measured tire parameter;
(c) at the exciter, receiving the tire data from the data signal;
(d) downloading the tire data from the exciter to a receiving unit of the vehicle. - View Dependent Claims (2, 3)
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4. A programming method for a remote tire monitor system of a vehicle, the method comprising:
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(a) applying a relatively low frequency activation signal from an exciter positioned proximate the vehicle to a coil of a tire monitor of the vehicle;
(b) at the exciter, detecting a data signal from the tire monitor, the data signal produced by modulating a relatively low frequency tire monitor signal with tire data produced in response to a measured tire parameter;
(c) at the exciter, receiving the tire data from the data signal;
(d) associating the tire data with position information for the tire monitor on the vehicle; and
(e) downloading the tire data and position information from the exciter to a receiving unit of the vehicle. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A tire monitor configured to be mounted on a tire of a vehicle, the tire monitor comprising:
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a coil resonant with a relatively low frequency signal applied to the coil from an exciter positioned proximate the vehicle;
a detection circuit coupled to the coil and configured to produce an activation signal in response to resonance of the coil with the relatively low frequency activation signal applied to the coil;
a sensor to detect a characteristic of the tire and produce a sensor signal;
a controller responsive to the activation signal to initiate a data transmission from the tire monitor based at least in part on the sensor signal; and
a high frequency communication circuit coupled to the controller to communicate a relatively high frequency signal including data related to the characteristic of the tire provided to the high frequency communication circuit from the controller. - View Dependent Claims (12, 13, 14)
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15. A tire monitor configured to be mounted on a tire of a vehicle, the tire monitor comprising:
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a controller;
a sensor coupled to the controller to produce a signal based on a sensed characteristic of the tire;
a low frequency duplex communication circuit for wireless communication with an exciter positioned proximate the tire monitor, the low frequency duplex communication circuit including;
a coil, a receiver circuit coupled to the coil and the controller and responsive to a relatively low frequency interrogation signal from the exciter to generate an activation signal for the controller, and a transmitter circuit coupled to the controller and the coil and responsive to digital data from the controller to convey response data from the tire monitor to the exciter; and
a high frequency communication circuit coupled to the controller to communicate a relatively high frequency signal including data related to the sensed characteristic of the tire provided to the high frequency communication circuit from the controller. - View Dependent Claims (16, 17)
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Specification