STATIONARY WAVE DISTANCE SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a stationary wave distance sensor which can measure the distance to an object to be measured when it is in the stationary state and estimate a position at which the object to be measured will arrive after a lapse of predetermined time when it is on the move stably and with high precision. SOLUTION: The stationary wave distance sensor comprises a transmitter for transmitting a transmission wave while sweeping the frequency of the transmission wave and a detection means for detecting the amplitude intensity of a stationary wave formed between the transmitter and the object to be measured, measuring the distance from the transmitter to the object to be measured. The transmitter sweeps the frequency of the transmission wave. A distance estimation means is provided which converts the relationship of the amplitude intensity of the stationary wave with the swept frequency into the relationship of the amplitude intensity of the stationary wave with a distance detected by the Fourier transform and estimates that a distance corresponding to a peak of the amplitude intensity of the stationary wave is a distance from the transmitter to the position at which the object to be measured will arrive after a lapse of predetermined time. COPYRIGHT: (C)2006,JPO&NCIPI