DISTANCE FACTOR LEARNING DEVICE, DISTANCE FACTOR LEARNING...

Data processing: measuring – calibrating – or testing – Measurement system – Dimensional determination

Reexamination Certificate

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Details

C702S094000, C702S150000, C701S216000, C342S357490, C342S357490

Reexamination Certificate

active

06904383

ABSTRACT:
A signal acquisition section19acquires, for example, a vehicle velocity pulse signal, which is generated from a vehicle velocity sensor8in accordance with the movement of a vehicle that is a mobile body. A distance information acquisition section20acquires distance information concerning the movement distance of the vehicle from a GPS receiver2. A distance factor computing section21computes a distance factor value based on the acquired vehicle velocity pulse signal and distance information. A change detection section23then compares this computed distance factor value and a distance factor reference value stored in a reference value storage section30to detect a continuous change of the distance factor value. That is, change detection section23detects 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 section23, a distance factor correction section26corrects the distance factor reference value speedily and appropriately.

REFERENCES:
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patent: 1 162 465 (2001-12-01), None
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