TIRE AIR PRESSURE DETECTION SYSTEM, VEHICLE BODY SIDE DEVICE, AND TIRE SIDE DEVICE

WIPO Patent Application WO/2018/066397

A1

Provided are a tire air pressure detection system, a vehicle body side device, and a tire side device which are capable of efficiently and accurately identifying tires and detecting the respective air pressures thereof. Each tire side device stores therein an identifier for identifying itself, and further stores therein in advance a transmission timing corresponding to the destination order of signals to be sequentially transmitted to the tire side devices. The vehicle body side device transmits, to the tire side devices, position specifying signals at different time intervals in accordance with a predetermined destination order. Upon receiving the position specifying signal, each of the tire side devices measures a reception interval of the position specifying signals which are received thereafter, and further measures reception intensities. On the basis of the measured reception interval and reception intensities, the tire side device determines the destination order of the position specifying signals directed to itself, and transmits a response signal including the identifier at a transmission timing corresponding to the determined destination order. In the vehicle body side device, the identifiers and the tire positions of the tires are associated on the basis of the reception order of the response signals.

LI QIYING (JP)

PCT/JP2017/034481

April 12, 2018

September 25, 2017

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AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)

B60C23/04; G01L17/00

JP2016022889A	2016-02-08
JP2007114108A	2007-05-10
JP2013241152A	2013-12-05

KOHNO, Hideto et al. (JP)

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