The invention discloses a digital-to-analog conversion device for train speed per hour, a display control method and electronic equipment. The digital-to-analog conversion device is connected with a monitoring host, a speed sensor and a double-needle speedometer of a train. The digital-to-analog conversion device comprises a frequency-to-voltage conversion circuit and a voltage-to-current conversion circuit. When the monitoring host normally works, the digital-to-analog conversion device is used for driving the double-needle speedometer based on a current type signal which is sent by the monitoring host and is about the train speed per hour; when the monitoring host loses power, the digital-to-analog conversion device is used for acquiring a frequency type signal about the train speed detected by the speed sensor, and converting the frequency type signal into a corresponding current type signal based on the frequency-to-voltage conversion circuit and the voltage-to-current conversion circuit to drive the double-pointer speedometer so as to realize uninterrupted display of the train speed. On the basis of modules such as the frequency-voltage conversion circuit and the voltage-current conversion circuit which are arranged inside, the train speed per hour can be continuously displayed after the monitoring host is shut down, and the driving safety of the train is helped to be guaranteed.
本申请公开了一种列车时速的数模转换装置、显示控制方法和电子设备,该数模转换装置分别与列车的监控主机、速度传感器和双针速度表连接;该数模转换装置包括频压转换电路和压流转换电路;当监控主机正常工作时,数模转换装置用于基于监控主机发送的关于列车时速的电流型信号驱动双针速度表;当监控主机失电时,数模转换装置用于获取速度传感器检测的关于列车时速的频率型信号,并基于频压转换电路、压流转换电路将频率型信号转换为对应的电流型信号以驱动双针速度表,实现列车时速的不间断显示。本申请基于内部设置的频压转换电路、压流转换电路等模块,可在监控主机关机后实现列车时速的不间断显示,帮助保障列车行车安全。
Digital-to-analog conversion device for train speed per hour, display control method and electronic equipment
一种列车时速的数模转换装置、显示控制方法和电子设备
09.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes / H03M Codieren, Decodieren oder Codeumsetzung allgemein , CODING, DECODING OR CODE CONVERSION, IN GENERAL |
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