車上位置検知センサの寸法が検知感度に与える影響

抄録

　One of the technologies for detecting the position of railway vehicles is a sensor that obtains the position information by detecting a metallic marker laid on the track and an electromagnetic induction coil mounted on a railway vehicle. The maximum distance between the marker and the coil is 250 mm. One of the methods to improve the detection sensitivity is to increase the size of the excitation coil or to increase the excitation frequency. However, these methods have the problem of limiting the installation area and radiating electromagnetic waves to other equipment. Therefore, under the condition that the size and frequency of the excitation coil are constant, we evaluate the effect of the size of the coil and the metallic marker on the detection sensitivity and proposed a method to improve the detection sensitivity of the position detection sensor for railway vehicle.