LOW FREQUENCY RECEIVER FOR A TIRE PRESSURE MONITOR SYSTEM
First Claim
1. A tire pressure monitoring (TPM) system for a vehicle, the system comprising:
- a TPM receiver adapted to receive tire pressure information;
a trigger device adapted to generate a low frequency (LF) unmodulated signal that is indicative of trigger command; and
a TPM sensor comprising an LF tank circuit adapted to receive the LF unmodulated signal and a microprocessor operably coupled to the LF tank circuit and configured to detect the presence of the LF unmodulated signal and to transmit a LF output signal having tire pressure information to the TPM receiver in response to the trigger command without demodulating the LF unmodulated signal.
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Accused Products
Abstract
A tire pressure monitoring (TPM) system for a vehicle is provided. The system comprises a TPM receiver, a trigger device and a TPM sensor. The TPM receiver is adapted to receive tire pressure information. The trigger device is adapted to generate a low frequency (LF) unmodulated signal that is indicative of trigger command. The TPM sensor comprises an LF tank circuit adapted to receive the LF unmodulated signal and a microprocessor operably coupled to the LF tank circuit and configured to detect the presence of LF unmodulated signal and to transmit a LF output signal having tire pressure information to the TPM receiver in response to the trigger command without demodulating the LF unmodulated signal.
46 Citations
20 Claims
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1. A tire pressure monitoring (TPM) system for a vehicle, the system comprising:
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a TPM receiver adapted to receive tire pressure information; a trigger device adapted to generate a low frequency (LF) unmodulated signal that is indicative of trigger command; and a TPM sensor comprising an LF tank circuit adapted to receive the LF unmodulated signal and a microprocessor operably coupled to the LF tank circuit and configured to detect the presence of the LF unmodulated signal and to transmit a LF output signal having tire pressure information to the TPM receiver in response to the trigger command without demodulating the LF unmodulated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A tire pressure monitoring (TPM) sensor in a vehicle that is capable of communicating with a trigger device that generates a low frequency (LF) signal unmodulated signal that is indicative of a trigger command, the sensor comprising:
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an LF tank circuit adapted to receive the LF unmodulated signal; and a microprocessor operably coupled to the LF tank circuit and adapted to detect the presence of the LF unmodulated signal and to transmit an RF output signal having tire pressure information in response to the trigger command without demodulating the LF unmodulated signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A tire pressure monitoring (TPM) sensor in a vehicle that is capable of communicating with a trigger device that provides at least one low frequency (LF) modulated input signal, the sensor comprising:
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an LF tank circuit adapted to receive the LF modulated input signal at a predetermined frequency; a microprocessor operably coupled to the LF tank circuit and adapted to demodulate the LF modulated input signal, to decode data present in the LF modulated input signal and to generate an LF output signal in response to the decoded data; and a compare circuit operably coupled to the LF tank circuit and adapted to receive the LF modulated input signal and to provide the LF modulated input signal to the microprocessor in response to the comparator determining that the LF modulated input signal is a valid signal. - View Dependent Claims (18, 19, 20)
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Specification