Tire pneumatic pressure monitoring system and tire pneumatic pressure monitoring receiver used for tire pneumatic pressure monitoring system
First Claim
1. A pneumatic pressure monitoring system comprising:
- a plurality of tire pneumatic pressure monitoring receivers for receiving radio signals transmitted from sensors provided in tires of a vehicle, and respectively detecting corresponding received signal strength indicator (RSSI) signals corresponding to the field intensities of the radio signals and detecting pneumatic pressure data of the tires included in the radio signals;
a console configured to receive the RSSI signals and the pneumatic pressure data and process the pneumatic pressure data;
an indicator for indicating the tire pneumatic pressure;
respective monitoring receivers providing an RSSI signal corresponding to a respective tire of the plurality of tires of the vehicle;
wherein the console is provided with a level adjusting means for adjusting output levels of the RSSI signals by controlling the tire pneumatic pressure monitoring receivers; and
wherein the levels of the respective RSSI signals input to the console from the respective tire pneumatic pressure monitoring receivers are set approximately equal.
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Accused Products
Abstract
A tire pneumatic pressure monitoring system contains tire pneumatic pressure monitoring receivers that receive radio signals transmitted from sensors and detect RSSI signals and pneumatic pressure data. A console processes the RSSI signals and the pneumatic pressure data and outputs indicating signals. An indicator indicates the tire pneumatic pressure with the indicating signals. The tire pneumatic pressure monitoring receivers are individually provided corresponding to the tires of a vehicle. The console is provided with a level adjusting unit for adjusting output levels of the RSSI signals by controlling the tire pneumatic pressure monitoring receivers. The levels of the respective RSSI signals input to the console from the respective tire pneumatic pressure monitoring receivers are set approximately equal.
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Citations
15 Claims
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1. A pneumatic pressure monitoring system comprising:
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a plurality of tire pneumatic pressure monitoring receivers for receiving radio signals transmitted from sensors provided in tires of a vehicle, and respectively detecting corresponding received signal strength indicator (RSSI) signals corresponding to the field intensities of the radio signals and detecting pneumatic pressure data of the tires included in the radio signals; a console configured to receive the RSSI signals and the pneumatic pressure data and process the pneumatic pressure data; an indicator for indicating the tire pneumatic pressure; respective monitoring receivers providing an RSSI signal corresponding to a respective tire of the plurality of tires of the vehicle; wherein the console is provided with a level adjusting means for adjusting output levels of the RSSI signals by controlling the tire pneumatic pressure monitoring receivers; and wherein the levels of the respective RSSI signals input to the console from the respective tire pneumatic pressure monitoring receivers are set approximately equal. - View Dependent Claims (2)
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3. A tire pneumatic pressure monitoring receiver comprising:
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a detecting means for receiving a radio signal transmitted from a sensor provided in a tire of a vehicle, and for detecting a received signal strength indicator (RSSI) signal corresponding to the field intensity of the radio signal and pneumatic pressure data of the tire included in the radio signal; and a variable gain amplifier in the receiver for amplifying the RSSI signals, the receiver responsive to control signals for varying a gain of the amplifier such that the RSSI signal strength is within a predetermined range. - View Dependent Claims (4)
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5. A vehicular tire pneumatic pressure monitoring system comprising:
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a tire pressure sensor attached to a tire of a vehicle, the sensor transmitting a radio signal representing pneumatic pressure data; a tire pneumatic pressure monitoring receiver corresponding to the tire pressure sensor, the tire pneumatic pressure monitoring receiver supplying an output signal representing the field intensity of a received radio signal; and a microprocessor configured to adjust a gain of the monitoring receiver so that the output signal for the corresponding tire pressure sensor radio signal is transmitted at approximately a predetermined level. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of measuring tire properties, the method comprising:
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providing a tire pressure sensor in a tire, the tire pressure sensor transmitting a radio signal representing tire pressure; providing a tire pressure monitoring receiver associated with a tire mounting position on the vehicle; receiving the transmitted radio signal and producing an output signal having a measure of a received field intensity; adjusting the output signal such that the measure of the received field intensity is approximately a predetermined value. - View Dependent Claims (15)
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Specification