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
First Claim
1. A distance factor learning device comprising:
- a signal acquisition section, acquiring a signal that is generated in accordance with the movement of a mobile body;
a distance information acquisition section, acquiring distance information concerning the movement distance of said mobile body;
a distance factor computing section, computing a distance factor value based on said signal and said distance information;
a reference value storage section, storing a distance factor reference value that is in accordance with the movement characteristics of said mobile body;
a change detection section, comparing said distance factor value with said distance factor reference value and thereby detecting a continuous change of said distance factor value; and
a distance factor correction section, correcting said distance factor reference value when a continuous change of said distance factor value is detected by said change detection section.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
11 Citations
18 Claims
-
1. A distance factor learning device comprising:
-
a signal acquisition section, acquiring a signal that is generated in accordance with the movement of a mobile body;
a distance information acquisition section, acquiring distance information concerning the movement distance of said mobile body;
a distance factor computing section, computing a distance factor value based on said signal and said distance information;
a reference value storage section, storing a distance factor reference value that is in accordance with the movement characteristics of said mobile body;
a change detection section, comparing said distance factor value with said distance factor reference value and thereby detecting a continuous change of said distance factor value; and
a distance factor correction section, correcting said distance factor reference value when a continuous change of said distance factor value is detected by said change detection section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 17, 18)
-
-
8. A distance factor learning method comprising the steps of:
-
acquiring a signal, which is generated in accordance with the movement of a mobile body, and distance information concerning the movement distance of said mobile body;
computing a distance factor value based on the acquired signal and distance information;
comparing the computed distance factor value with a distance factor reference value that is in accordance with the movement characteristics of said mobile body to detect a continuous change of said distance factor value; and
correcting said distance factor reference value when a continuous change of the distance factor value is detected. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
Specification