关键词: 冗余, 测速测距, 双速度传感器

Abstract: This paper proposes a redundant speed-distance measurement method for dual-speed-sensors trains, and the corresponding devices, electronic equipment and storage media are included. This method first obtains the pulse measurement data of odometer 1 and odometer 2 at the current moment to determine the cumulative pulse error; Then based on the pulse measurement data of odometer 2 at the current moment, the cumulative pulse error, and the instantaneous pulse error, the pulse measurement data of odometer 1 at the current moment is corrected; Finally, through the results of mutual correction of the two sensors, the distance and speed of the train at the current moment are determined. The method provided in this paper solves the problem of inaccurate measurement when a single speed sensor fails, and ensures that the distance output value of the speed sensor does not jump when it recovers from the fault, which improves the accuracy of train speed measurement and distance measurement.

Key words: redundancy, speed-distance measurement, dual-speed-sensors