基于电力载波通信的车辆电空制动控制系统设计

Truck Electro-pneumatic Braking System Based On Power Line Communication

摘要:

为提高重载货车制动缓解阶段的同步性,减小因空气制动缓解波传递滞后引起的车辆纵向冲击,提出并研制了一种基于电力载波通信技术的车辆电空制动控制系统。该系统以STC32G微控制器作为核心控制单元,集成电磁阀和压力传感器等关键部件,利用基于FSK调制技术的电力载波通信技术,实现制动控制指令的可靠传输。文中对系统的总体结构进行了设计说明,并对硬件电路组成进行了详细分析,重点阐述了FSK调制与解调的工作原理及其在系统中的具体实现方法。试验表明,该系统具有低成本、抗干扰能力强、使用简单等优点,可在不增加额外通信线路的条件下,利用供电电源线完成电信号与空气制动的协同控制,为长大编组重载货车的同步制动控制提供了一种可行的技术方案,作为列车控制总线具有良好的应用前景和工程实用价值。

Abstract:

Addressing the challenge of asynchronous brake release and the resultant significant longitudinal impulse in heavy-haul trains due to air wave propagation delays, this study develops an electro-pneumatic brake control system utilizing power line carrier communication. The system employ pressure sensors the STC32G microcontroller as its core, integrating key components such as solenoid valves and pressure sensors, and utilizes FSK modulation-based power line carrier communication for transmitting control commands. The overall architecture and hardware circuit design of the system are elaborated, with a focused analysis on the principle and practical implementation of FSK modulation and demodulation. The system offers advantages such as low cost, strong anti-interference capability, and ease of use. It achieves a combined hardware and software design for freight train electro-pneumatic braking using the power supply line as the carrier, providing a feasible technical solution for the synchronous braking control of long-formation heavy-haul trains. As a train control bus, it demonstrates broad application potential and practicality.