Дистанционный размерный контроль колес в движущемся железнодорожном составе

In this work the problems of the railway trains safety are considered. It is justified that the manual control of the wheels needs to be replaced with the automatic monitoring. Given is the description of the operation principles of the developed automated diagnostical system named COMPLEX which is exploited on the Russian railways for monitoring of the train´s wheels on the move. The system is intended for measuring the geometrical parameters of the tread surface, revealing the wear-out and the defects of the all-rolled train´s wheels on the move, registration of the mounted wheels´ defects and the on-line transition of the collected data to the nearest check station. The system is certificated for use within the range of speed from 5 km/h to 60 km/h and within the temperature range from -50oC to +50oC. The results of the multiple comparative measurements proves the high stability and accuracy of the automated measurements for the trains with the speed up to 60 km/h in the inspection area.