WHEEL DIAMETER CALCULATION SYSTEM, METHOD FOR CALCULATING WHEEL DIAMETER, INFORMATION PROCESSOR, AND PROGRAM

To provide a wheel diameter calculation system that can easily calculate a wheel diameter without using a measurement signal other than a pulse signal according to the rotation of a wheel.SOLUTION: The wheel diameter calculation system includes: a pulse generator for generating a pulse signal according to the rotation of wheels of a railway vehicle; a distance calculation unit for calculating a provisional distance between at least two stations on the basis of a pulse signal obtained by travelling of the railway vehicle between the at least two stations and a provisional wheel diameter of a wheel; a ratio calculation unit for calculating the ratio of the provisional distance between the stations and a reference distance between stations; and a wheel diameter calculation unit for calculating the wheel diameter of the wheel by correcting the provisional wheel diameter according to the ratio.SELECTED DRAWING: Figure 1 【課題】車輪の回転に応じたパルス信号以外の計測信号を用いずとも車輪径を算出することが容易な車輪径算出システムを提供する。【解決手段】車輪径算出システムは、鉄道車両の車輪の回転に応じたパルス信号を発生するパルス発生器と、少なくとも２つの駅間を鉄道車両が走行して得られたパルス信号及び車輪の仮の車輪径に基づいて、当該２つの駅間の仮の駅間距離を算出する距離算出部と、仮の駅間距離及び基準駅間距離の比率を算出する比率算出部と、仮の車輪径を比率に応じて補正することで、車輪の車輪径を算出する車輪径算出部と、を備える。【選択図】図１