Wheel identifying apparatus and tire inflation pressure detecting apparatus with function of wheel identification
First Claim
1. A receiver included in a wheel identifying apparatus that comprises:
- a plurality of transceivers that are respectively located on a plurality of wheels of a vehicle, each of the transceivers including a first receiving unit that receives a trigger signal, a first controlling unit that determines strength of the trigger signal received by the first receiving unit and stores, in a frame, signal strength information indicating the determined strength of the trigger signal, and a transmitting unit that transmits the frame in response to receipt of the trigger signal by the first receiving unit;
a triggering device that is located on a body of the vehicle at different distances from the transceivers to transmit the trigger signal; and
the receiver that is located on the body of the vehicle to receive the frames transmitted by the transceivers and identify, for each of the received frames, the wheel on which the transceiver having transmitted the frame is located,wherein the receiver comprises;
a second receiving unit that receives the frames transmitted by the transceivers; and
a second controlling unit that identifies, for each of the frames received by the second receiving unit, the wheel on which the transceiver having transmitted the frame is located based on the fact that the strengths indicated by the signal strength information stored in the frames are inversely proportional to the distances from the triggering device to the transceivers having transmitted the frames.
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Accused Products
Abstract
A wheel identifying apparatus according to the present invention includes a plurality of transceivers, a triggering device, a receiver, and a wheel identifier. Each of the transceivers is located on one of a plurality of wheels of a vehicle and works to receive a trigger signal and transmit a response signal in response to receipt of the trigger signal. The triggering device is located on a body of the vehicle at different distances from the transceivers and works to transmit the trigger signal. The receiver works to receive the response signals transmitted by the transceivers. The wheel identifier is operatively connected to the receiver and works to identify, for each of the response signals received by the receiver, the wheel on which the transceiver having transmitted the response signal is located using the fact that strengths of the trigger signal at the transceivers are different from each other.
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Citations
16 Claims
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1. A receiver included in a wheel identifying apparatus that comprises:
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a plurality of transceivers that are respectively located on a plurality of wheels of a vehicle, each of the transceivers including a first receiving unit that receives a trigger signal, a first controlling unit that determines strength of the trigger signal received by the first receiving unit and stores, in a frame, signal strength information indicating the determined strength of the trigger signal, and a transmitting unit that transmits the frame in response to receipt of the trigger signal by the first receiving unit; a triggering device that is located on a body of the vehicle at different distances from the transceivers to transmit the trigger signal; and the receiver that is located on the body of the vehicle to receive the frames transmitted by the transceivers and identify, for each of the received frames, the wheel on which the transceiver having transmitted the frame is located, wherein the receiver comprises; a second receiving unit that receives the frames transmitted by the transceivers; and a second controlling unit that identifies, for each of the frames received by the second receiving unit, the wheel on which the transceiver having transmitted the frame is located based on the fact that the strengths indicated by the signal strength information stored in the frames are inversely proportional to the distances from the triggering device to the transceivers having transmitted the frames. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A receiver included in a wheel identifying apparatus that comprises:
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a plurality of transceivers that are respectively located on a plurality of wheels of a vehicle, each of the transceivers including a first receiving unit that receives a trigger signal, a first controlling unit that determines strength of the trigger signal received by the first receiving unit and set a transmission time according to the determined strength of the trigger signal, and a transmitting unit that transmits a frame at the transmission time set by the first controlling unit in response to receipt of the trigger signal by the first receiving unit; a triggering device that is located on a body of the vehicle at different distances from the transceivers to transmit the trigger signal; and the receiver that is located on the body of the vehicle to receive the frames transmitted by the transceivers and identify, for each of the received frames, the wheel on which the transceiver having transmitted the frame is located, wherein the receiver comprises; a second receiving unit that receives the frames transmitted by the transceivers; and a second controlling unit that identifies, for each of the frames received by the second receiving unit, the wheel on which the transceiver having transmitted the frame is located based on the transmission time at which the frame is transmitted. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification