Wheel position detecting device that performs dedicated local communication for each wheel and tire air pressure detecting device including the same
AssigneeDenso Corporation
InventorMasashi Mori
Life of this patent
Estimating the term…
Abstract
A wheel position detecting device and a tire air pressure detecting device including the wheel position detecting device are provided. The wheel position detecting device includes triggering devices and a receiver mounted on the vehicle-body side, and transmitters mounted on the wheels. Each triggering device outputs a trigger signal to each transmitter. In response to the trigger signal, each transmitter transmits a frame to the receiver. The receiver receives the frame and judges whether the transmitter is mounted on a subject wheel, based on whether reception strength indicated by reception strength data stored in the frame is within a range set in advance.
Claims6
A detecting apparatus for detecting an each position of a plurality of wheels provided on a body of a vehicle comprising a plurality of triggering devices provided on the body, a plurality of transmitters provided on each of the plurality of wheels, and a receiver provided on the body,
- each one of the plurality of triggering devices being respectively dedicated to a specified one of the plurality of wheels, and sending a trigger signal to a specified one of the plurality of the transmitters provided on the specified one of the plurality of wheels;
- each of the plurality of transmitters, dedicated to each one of the plurality of wheels, comprising;
- a first receiving unit receiving the trigger signal;
- a first controlling unit detecting an intensity of the trigger signal received by the transmitter, embedding a datum representing the intensity together with each of identifiers representing respective one of the plurality of transmitters in a frame, and outputting the frame to the receiver;
- and
- a transmitting unit transmitting the frame output by the first control unit;
- and
- the receiver comprising;
- a second receiving unit receiving the frame;
- and
- a second controlling unit detecting each position of the plurality of wheels based on the intensity embedded in the datum, the second control unit comprising;
- an activating unit activating the triggering unit so as to send the trigger signal to a target transmitter, of the plurality of the transmitters, dedicated to the specified one of the plurality of wheels;
- and
- a judging unit judging whether or not the frame is sent by the target transmitter based on whether or not the intensity embedded in the frame is within a predetermined intensity range.
An detecting apparatus for detecting an each position of a plurality of wheels provided on a body of a vehicle comprising a plurality of triggering devices provided on the body, a plurality of transmitters provided on each of the plurality of wheels, and a receiver provided on the body,
- each one of the plurality of triggering devices being respectively dedicated to a specified one of the plurality of wheels, and sending a trigger signal to a specified one of the plurality of the transmitter provided on the specified one of the plurality of wheels;
- each of the plurality of transmitters comprising;
- a first receiving unit receiving the trigger signal;
- a first controlling unit detecting an intensity of the trigger signal, embedding a datum representing the intensity together with each of identifiers representing respective one of the plurality of transmitters in a frame, and outputting the frame;
- and
- a transmitting unit transmitting the frame output by the first controlling unit;
- and
- the receiver comprising;
- a second receiving unit receiving the frame;
- and
- a second controlling unit detecting each position of the plurality of wheel based on the intensity embedded in the datum, the second controlling unit comprising;
- an activating unit activating the triggering unit so as to send the trigger signal to a target sender, of the plurality of the transmitters, dedicated to the specified one of the plurality of wheels;
- and
- a judging unit judging whether the frame is sent by the target transmitter based on whether the intensity embedded in the frame is greatest among a plurality of the intensity embedded in a plurality of the frame sent from the plurality of the transmitters.
Dependencies are inferred from the claim text.