Title:
A tire air pressure detecting device provided with a wheel position sensing device and it
Document Type and Number:
Japanese Patent JP5954001
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a wheel position detection device capable of identifying wheel positions reliably while receiving a transmission frame including no angle information from a transmitter.SOLUTION: A delay time between the time when an angle of a transmitter is equal to a reference angle and the time when transmission of frames is performed is set randomly. Setting the delay time allows a transmission angle to be changed for transmission of each frame. Even when some of the frames correspond to a position of Null, the other frames avoid Null. As a result, frames that are transmitted reach a TPMS-ECU more reliably. Information on the maximum delay time and the like are stored by a TPMS-ECU3, and an allowable range of variations considering a rotation angle for the maximum delay time is set. As a result, the TPMS-ECU3 sets an allowable range of variations considering a delay time without any data on the delay time, that is, angle information within the frames.
Inventors:
Masashi Mori
Noriaki Okada
Noriaki Okada
Application Number:
JP2012154885A
Publication Date:
July 20, 2016
Filing Date:
July 10, 2012
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01M17/007; B60C19/00; B60C23/02; B60C23/04; G01L17/00; G01M17/02
Domestic Patent References:
| JP2006312342A | ||||
| JP2012111481A | ||||
| JP2012096640A | ||||
| JP2010122023A | ||||
| JP2011168099A | ||||
| JP2005186749A |
Foreign References:
| WO2011085877A1 |
Attorney, Agent or Firm:
Patent Business Corporation Yuai Patent Office