Electronic modules, instead of traditional relays, perform directly the control of switches, signals and retarders and identification of the status of the track circuits.

电子模块取代原有的继电器，直接实现对道岔、信号机、减速器的控制和对轨道电路的状态识别。

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The stroke is under the control of high-precision electronic caliper which can vary the stroke of screen piston precisely through corresponding control modules.

行程由高精度的电子尺来控制，通过相应的控制模块精确的控制滤网活塞的行程。

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The main function modules and design of photoelectric control switch system based on the infrared electronic transducer technology are introduced in detail.

详细介绍基于红外传感技术的光电控制开关系统的主要功能模块及设计。

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