To provide a tire air pressure detecting device automatically reregistering ID, even if using a G sensor having low accuracy of an output value.
The uniaxial direction detecting type G sensor 20 is arranged to detect centrifugal force and gravity by rotation of wheels on each of transmitters 2 mounted on each of the wheels. Periodic information is acquired from AC components generated by detecting gravitational acceleration extracted from output signals of the G sensors 20 in a control part 23a of each of the transmitters 2. The periodic information is transmitted from each of the transmitters 2 to a receiver 3. The periods of the AC components generated by gravity of the output signals of the G sensors 20 transmitted from each of the transmitters 2 are compared. According to the comparison result and steering angle information, the wheel (left or right wheel) mounted with each of the transmitters 2 is specified.
COPYRIGHT: (C)2006,JPO&NCIPI
Hideki Saito
| JP2005147709A | ||||
| JP2003226121A | ||||
| JP2003527608A | ||||
| JP2003159920A |
Takahiro Miura
Fumihiro Mizuno