Magnetic sensor used for LF communication in TPMS application
First Claim
1. A tire pressure monitoring system (TPMS) sensor comprising:
- a microcontroller unit;
a pressure sensor electrically connected to the microcontroller unit and configured to measure an internal air pressure of a tire;
a receiver electrically connected to the microcontroller unit and configured to receive at least one communication signal, the receiver including a magnetic sensor configured to detect a modulated low-frequency electromagnetic carrier signal as a first communication signal and output an encoded measurement signal based on the detected modulated low-frequency electromagnetic carrier signal; and
a demodulator configured to convert the encoded measurement signal into a data signal and output the data signal to the microcontroller unit.
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Accused Products
Abstract
A tire pressure monitoring system (TPMS) sensor and a communication method are provided. The TPMS sensor includes a microcontroller unit, a pressure sensor electrically connected to the microcontroller unit and configured to measure an internal air pressure of a tire and a receiver electrically connected to the microcontroller unit and configured to receive at least one communication signal. The receiver includes a magnetic sensor configured to detect a modulated low-frequency electromagnetic carrier signal as a first communication signal and output an encoded measurement signal based on the detected modulated low-frequency electromagnetic carrier signal. The TPMS sensor further includes a demodulator configured to convert the encoded measurement signal into a data signal and output the data signal to the microcontroller unit.
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Citations
20 Claims
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1. A tire pressure monitoring system (TPMS) sensor comprising:
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a microcontroller unit; a pressure sensor electrically connected to the microcontroller unit and configured to measure an internal air pressure of a tire; a receiver electrically connected to the microcontroller unit and configured to receive at least one communication signal, the receiver including a magnetic sensor configured to detect a modulated low-frequency electromagnetic carrier signal as a first communication signal and output an encoded measurement signal based on the detected modulated low-frequency electromagnetic carrier signal; and a demodulator configured to convert the encoded measurement signal into a data signal and output the data signal to the microcontroller unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for communicating with a tire pressure monitoring system (TPMS) sensor comprising a microcontroller unit and a receiver electrically connected to the microcontroller unit and configured to receive at least one communication signal, wherein the receiver includes a magnetic sensor, the method comprising:
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detecting, by the magnetic sensor, a modulated low-frequency electromagnetic carrier signal as a first communication signal; outputting, by the magnetic sensor, an encoded measurement signal based on the detected modulated low-frequency electromagnetic carrier signal; converting, by a demodulator, the encoded measurement signal into a data signal; and outputting, by the demodulator, the data signal to the microcontroller unit. - View Dependent Claims (18, 19, 20)
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Specification