Tire inflation pressure sensing apparatus with function of spare wheel identification
First Claim
1. A tire inflation pressure sensing apparatus comprising:
- a first pressure sensor provided on a running wheel of a vehicle, said first pressure sensor working to sense an inflation pressure of a tire mounted on the running wheel and generate a pressure signal representative of the sensed inflation pressure;
a first transmitter provided on the running wheel of the vehicle, said first transmitter being configured to send out the pressure signal generated by said first pressure sensor upon being triggered by a trigger signal;
a second pressure sensor provided on a spare wheel of the vehicle, said second pressure sensor working to sense an inflation pressure of a tire mounted on the spare wheel and generate a pressure signal representative of the sensed inflation pressure;
a second transmitter provided on the spare wheel of the vehicle, said second transmitter being configured to send out the pressure signal generated by said second pressure sensor upon being triggered by the trigger signal; and
a receiver provided on a body of the vehicle, said receiver being configured to;
send out the trigger signal;
operate in a first mode if only the pressure signal sent out from said first transmitter is received, in the first mode said receiver determining the inflation pressure of the tire on the running wheel of the vehicle based on the received pressure signal; and
operate in a second mode if both the pressure signals sent out from said first and said second transmitters are received, in the second mode said receiver generating one RSSI (Received Signal Strength Indicator) signal for each of the two pressure signals, identifying whether each of the two pressure signals is sent out from said first transmitter or said second transmitter based on the RSSI signal generated therefor, and determining the inflation pressure of the tire on the running wheel of the vehicle based on the pressure signal sent out from said first transmitter.
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Accused Products
Abstract
A tire inflation pressure sensing apparatus according to the invention includes a first pressure sensor, a first transmitter, a second pressure sensor, a second transmitter, and a receiver. The first pressure sensor and first transmitter are provided on a running wheel of a vehicle. The first transmitter works to send out a pressure signal generated by the first pressure sensor upon being triggered by a trigger signal. The second pressure sensor and second transmitter are provided on a spare wheel of the vehicle. The second transmitter works to send out a pressure signal generated by the second pressure sensor upon being triggered by the trigger signal. The receiver is provided on the body of the vehicle and works to send out the trigger signal and identify whether a pressure signal received thereby is sent out from the first transmitter or the second transmitter based on a RSSI signal generated therefor.
13 Citations
6 Claims
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1. A tire inflation pressure sensing apparatus comprising:
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a first pressure sensor provided on a running wheel of a vehicle, said first pressure sensor working to sense an inflation pressure of a tire mounted on the running wheel and generate a pressure signal representative of the sensed inflation pressure;
a first transmitter provided on the running wheel of the vehicle, said first transmitter being configured to send out the pressure signal generated by said first pressure sensor upon being triggered by a trigger signal;
a second pressure sensor provided on a spare wheel of the vehicle, said second pressure sensor working to sense an inflation pressure of a tire mounted on the spare wheel and generate a pressure signal representative of the sensed inflation pressure;
a second transmitter provided on the spare wheel of the vehicle, said second transmitter being configured to send out the pressure signal generated by said second pressure sensor upon being triggered by the trigger signal; and
a receiver provided on a body of the vehicle, said receiver being configured to;
send out the trigger signal;
operate in a first mode if only the pressure signal sent out from said first transmitter is received, in the first mode said receiver determining the inflation pressure of the tire on the running wheel of the vehicle based on the received pressure signal; and
operate in a second mode if both the pressure signals sent out from said first and said second transmitters are received, in the second mode said receiver generating one RSSI (Received Signal Strength Indicator) signal for each of the two pressure signals, identifying whether each of the two pressure signals is sent out from said first transmitter or said second transmitter based on the RSSI signal generated therefor, and determining the inflation pressure of the tire on the running wheel of the vehicle based on the pressure signal sent out from said first transmitter. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification