Title:
車両移動距離算出装置及び方法
Document Type and Number:
Japanese Patent JP3979043
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a device and a method for calculating vehicle movement distance by which the movement distance can be accurately calculated regardless of the variation of tire diameter. SOLUTION: Two optical beacon transmitters 3 and 4 are installed at a specified interval L in distance at key places along the travelling passage of a vehicle 1, and receiving areas A and B are formed apart from each other at the specified interval L in distance on the travelling passage 2. When the vehicle 1 passes two receiving areas A and B, an optical beacon receiver 5 loaded on the vehicle 1 sequentially receives signals from the optical beacon transmitters 3 and 4, and corrects a distance coefficient on the basis of an estimated distance between the receiving areas A and B obtained therefrom as well as the actual distance L. Then, the movement distance of the vehicle is calculated on the basis of the output from a vehicle speed sensor for detecting the vehicle speed and the corrected distance coefficient.
Inventors:
Koji Higa
Application Number:
JP2001217596A
Publication Date:
September 19, 2007
Filing Date:
July 18, 2001
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
G01C22/02; G05D1/02; G01C25/00
Domestic Patent References:
| JP7128420A | ||||
| JP11153445A | ||||
| JP11095835A | ||||
| JP8075485A | ||||
| JP3048399A | ||||
| JP6027652B2 |
Attorney, Agent or Firm:
Yoshiyuki Osuga