TIRE INFLATION PRESSURE DETECTION SYSTEM
First Claim
1. A tire inflation pressure detection system comprising:
- transceivers disposed on a plurality of wheels including respective tires, each of the transceivers including a receiving unit that receives a triggering signal with a received strength, a first control unit that processes a frame by obtaining received strength data associated with the received strength of the triggering signal, and placing the received strength data in the frame, the frame having ID information associated with the each of the transceivers appended thereto, and a transmitting unit that transmits the frame processed by the first control unit;
trigger machines disposed on a vehicle body and outputting the triggering signal; and
a receiver disposed on the vehicle body and including a receiving unit that receives the frame, and a second control unit that decides, based on the received strength obtained from the received strength data contained in the frame, to which of the plurality of wheels the each of transceivers is attached, wherein;
the second control unit includes an ID registration means that automatically registers the ID information of the transceiver of a subject vehicle; and
the ID registration means includes a trigger output means for causing the triggering signal to be output from the trigger machines at an ID registration time;
a collecting means for collecting received strength data elements in relation to the each of the transceivers on the basis of the ID information appended to the frame when the frame is received;
a degree-of-variance arithmetic means for computing a degree of a variance among the received strength data elements collected by the collecting means; and
a deciding means for recognizing which of the each of the transceivers associated with the ID information are associated with the subject vehicle when a degree of a variance computed by the degree-of-variance arithmetic means is smaller than a threshold, and for registering the ID information of the each of the transceivers with the subject vehicle when the ID information is recognized.
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Accused Products
Abstract
Transceiver ID information associated with a subject vehicle is accurately registered even when another vehicle having transceivers is nearby. During ID registration, a degree of a variance among received strength data elements is obtained in relation to a plurality of transceivers each having ID information associated therewith. ID information associated with data elements having a small degree of a variance is recognized as ID information of a transceiver attached to the subject vehicle. Therefore, ID information associated with transceivers attached to the subject vehicle can be reliably discriminated from ID information associated with transceivers attached to another vehicle.
14 Citations
5 Claims
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1. A tire inflation pressure detection system comprising:
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transceivers disposed on a plurality of wheels including respective tires, each of the transceivers including a receiving unit that receives a triggering signal with a received strength, a first control unit that processes a frame by obtaining received strength data associated with the received strength of the triggering signal, and placing the received strength data in the frame, the frame having ID information associated with the each of the transceivers appended thereto, and a transmitting unit that transmits the frame processed by the first control unit; trigger machines disposed on a vehicle body and outputting the triggering signal; and a receiver disposed on the vehicle body and including a receiving unit that receives the frame, and a second control unit that decides, based on the received strength obtained from the received strength data contained in the frame, to which of the plurality of wheels the each of transceivers is attached, wherein; the second control unit includes an ID registration means that automatically registers the ID information of the transceiver of a subject vehicle; and the ID registration means includes a trigger output means for causing the triggering signal to be output from the trigger machines at an ID registration time;
a collecting means for collecting received strength data elements in relation to the each of the transceivers on the basis of the ID information appended to the frame when the frame is received;
a degree-of-variance arithmetic means for computing a degree of a variance among the received strength data elements collected by the collecting means; and
a deciding means for recognizing which of the each of the transceivers associated with the ID information are associated with the subject vehicle when a degree of a variance computed by the degree-of-variance arithmetic means is smaller than a threshold, and for registering the ID information of the each of the transceivers with the subject vehicle when the ID information is recognized. - View Dependent Claims (2)
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3. A tire inflation pressure detection system comprising:
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transceivers disposed on a plurality of wheels including respective tires, each of the transceivers including a receiving unit receiving a triggering signal at a received strength, a first control unit obtaining the received strength of the triggering signal received by the receiving unit, and placing received strength data in a frame having ID information associated with the each of the transceivers appended thereto, and a transmitting unit transmitting the frame processed by the first control unit; trigger machines disposed on a vehicle body and outputting the triggering signal; and a receiver disposed on the vehicle body, the receiver including a receiving unit receiving the frame, and a second control unit deciding to which of the plurality of wheels the transceiver is attached based on the received strength data contained in the frame, wherein; the second control unit includes an ID registration means that automatically registers the ID information of the transceiver of a subject vehicle; and the ID registration means includes a trigger output means for outputting the triggering signal from the trigger machines at an ID registration time;
a collecting means for receiving the frame and collecting received strength data elements in relation to the each of the transceivers on the basis of the ID information appended to the frame when the frame is received;
a degree-of-variance arithmetic means for computing a degree of a variance among the collected received strength data elements associated with the each; and
a deciding means for recognizing which of the each of the transceivers associated with the ID information are associated with the subject vehicle, the deciding means recognizing a same number of the transceivers as the number of wheels of the subject vehicle, the deciding means recognizing the received strength data elements associated with the in ascending order of the degree of a variance computed by the degree-of-variance arithmetic means, and that registers the elements of ID information. - View Dependent Claims (4)
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5. In a tire inflation pressure detection system for detecting a tire inflation pressure of a plurality of tires mounted on a corresponding plurality of wheels attached to a subject vehicle, a method for identifying specific transceivers associated with the subject vehicle from a plurality of transceivers, the method comprising:
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establishing a registration mode for registering the identified specific transceivers associated with the subject vehicle; transmitting a triggering signal from triggering units mounted on the subject vehicle, the triggering signal transmitted m number of times during the registration mode, the triggering signal capable of being received by the plurality transceivers with a received strength, the method including for each of the transmitted m triggering signals; receiving the triggering signal in at least some of the plurality of transceivers, the receiving the triggering signal causing a first control unit in each of the at least some of the transceivers to obtain the received strength of the received triggering signal and place received strength data associated with the received strength and ID information associated with the each of the at least some transceivers in a frame; transmitting the frame to a receiver disposed in the vehicle in response to the receiving the triggering signal, the receiver storing the frame including the received strength data in relation to each of the at least some transceivers by the ID information; computing in relation to each of the at least some transceivers based on the ID information, a degree-of-variance among the stored received strength data elements for the each of the at least some transceivers and each of the m transmitted triggering signals; identifying a number of the at least some transceivers, the number being the same as the number of the wheels of the subject vehicle, as ones of the plurality of transceivers that are attached to the subject vehicle, the number of the at least some transceivers recognized in ascending order of the computed degree-of-variance; and registering the recognized number of transceivers as the identified specific transceivers based on the ID information.
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Specification