| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wheel position determining device capable of determining a position of a wheel, while attaining simplification and cost reduction of a constitution of the wheel position determining device. <P>SOLUTION: A correction value set based on a difference between an output value of an RF signal by RF transmission circuits 16a-16d and a preset reference output value, is stored in a storage part of a tire sensor unit 3. In a receiver unit 4, an RF receiving antenna 32 is arranged in a position having distances from the RF transmission circuits 16a-16d different respectively. A receiver unit controller grasps corrected receiving strength obtained by correcting receiving strength of the RF signal in the RF receiving antenna 32 based on the correction value, and determines a position of the tire sensor unit 3 based on the size of the corrected receiving strength. <P>COPYRIGHT: (C)2013,JPO&INPIT |
