Travel distance measurement device

摘要

A travel distance measurement device includes a transmitting antenna that is disposed in a vehicle and emits a transmission signal, as a radio wave, toward a ground surface, a receiving antenna that is disposed in the vicinity of the transmitting antenna, and receives a radio wave reflected from the ground surface and acquires a reflection signal, a distance calculator (an IQ demodulator and a phase conversion integrator) that calculates the travel distance of the vehicle on the basis of the acquired reflection signal, a gyro sensor that measures a predetermined parameter regarding curve traveling of the vehicle, and a correcting operation unit that corrects the calculated travel distance on the basis of the measured parameter.

主权项

1. A travel distance measurement device comprising:
a transmitter that is disposed in a vehicle and emits a transmission signal, as a radio wave, toward a ground surface; a receiver that is disposed in a vicinity of said transmitter, and receives a radio wave emitted from said transmitter and reflected from said ground surface and acquires a reflection signal; a distance calculator that calculates a travel distance of said vehicle on a basis of the reflection signal acquired by said receiver; a curve parameter measuring unit that measures a predetermined parameter regarding curve traveling of said vehicle; and circuitry configured to correct the travel distance calculated by said distance calculator on a basis of the parameter measured by said curve parameter measuring unit, wherein said vehicle is a railroad vehicle including railway bogies; wherein said circuitry configured to correct corrects the travel distance calculated by said distance calculator on a basis of the parameter measured by said curve parameter measuring unit, a distance between the railway bogies, and a distance between said travel distance measurement device and each of the railway bogies.