发明名称 |
DISTANCE FACTOR LEARNING DEVICE, DISTANCE FACTOR LEARNING METHOD, DISTANCE FACTOR LEARNING PROGRAM, RECORDING MEDIUM RECORDING SAID PROGRAM, MOVEMENT CONDITION COMPUTING DEVICE, AND PRESENT POSITION COMPUTING DEVICE |
摘要 |
A signal acquisition section 19 acquires, for example, a vehicle velocity pulse signal, which is generated from a vehicle velocity sensor 8 in accordance with the movement of a vehicle that is a mobile body. A distance information acquisition section 20 acquires distance information concerning the movement distance of the vehicle from a GPS receiver 2 . A distance factor computing section 21 computes a distance factor value based on the acquired vehicle velocity pulse signal and distance information. A change detection section 23 then compares this computed distance factor value and a distance factor reference value stored in a reference value storage section 30 to detect a continuous change of the distance factor value. That is, change detection section 23 detects a change of tire outer diameter due to a change of the pneumatic pressure of the vehicle's tire or tire exchange, etc. When the change of tire outer diameter is detected by change detection section 23 , a distance factor correction section 26 corrects the distance factor reference value speedily and appropriately.
|
申请公布号 |
US6904383(B2) |
申请公布日期 |
2005.06.07 |
申请号 |
US20030422821 |
申请日期 |
2003.04.25 |
申请人 |
PIONEER CORPORATION |
发明人 |
TANAKA KAZUAKI;GOTO SEIJI |
分类号 |
G01C22/00;B60R21/00;G01C22/02;G01S19/19;(IPC1-7):G01B11/24;G01C17/38;G01C21/26;H04B7/185 |
主分类号 |
G01C22/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|