Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
车载轨道电路补偿电容故障 诊断装置设计. (Chinese) |
| Alternate Title: |
Design of fault diagnosis device for track circuit compensation capacitor in vehicle. (English) |
| Συγγραφείς: |
丁昀, 邬芝权, 伍妍蝶, 吴彦良 |
| Πηγή: |
Journal of Railway Science & Engineering; Sep2025, Vol. 22 Issue 9, p4172-4181, 10p |
| Θεματικοί όροι: |
Fault diagnosis, Client/server computing equipment, Electromagnetic induction, Electromagnetic theory, Grey relational analysis |
| Abstract (English): |
To address the needs of China's rapidly expanding railway network and advancing high-speed rail technology, this paper designed and implemented a dedicated compensation capacitor detection and fault diagnosis device for rail circuit inspection trolleys, targeting the issues of high cost and low efficiency in fault detection of compensation capacitors within jointless track circuits. Firstly, the detection principle of compensation capacitors in integrated inspection vehicles was rigorously analyzed. Building upon electromagnetic induction theory, this study proposed a dedicated detection method for track circuit inspection trolleys, whose key innovation involved inductance compensation in the closed loop through series-connected coils to achieve reliable capacitor detection. Next, a jointless track circuit transmission model was established using uniform transmission line and two-port network theories, with its accuracy validated by a modular equivalent circuit model incorporating resistors, capacitors, and inductors. Subsequently, voltage characteristics of feedback signals under various fault modes were obtained through simulation. The Fisher Score method was employed to identify optimal feature parameters, based on which a sample fault feature sequence set was constructed. The optimal grey relational degree model was then determined, achieving seamless integration between the embedded device and the fault diagnosis algorithm. Finally, the developed device adopts the STM32F412RGT6 microcontroller as its core, integrating multiple functional modules including excitation signal generation, feedback signal reception, filtering, voltage sampling, real-time communication, and faultdiagnosis. Experimental results demonstrate that the proposed device can reliably generate excitation signals and effectively receive feedback signals. After processing by the filtering and voltage sampling circuits, interference signals can be eliminated to obtain target detection data. Fault types in compensation capacitors can be accurately identified. The detection results can be transmitted to the host computer in real time. When mounted on the matched rail circuit inspection vehicle, the device significantly reduces labor costs and improves detection efficiency, demonstrating strong practical value for routine maintenance workflows in railway signaling departments and construction units. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为应对我国铁路网络快速扩展及高速铁路技术发展的需求, 针对无绝缘轨道电路中补偿电容故障检测成本高、效 率低等问题, 设计并实现一款专为轨道电路检测小车量身定制的补偿电容检测及故障诊断装置。首先, 深入分析综合检测 车对补偿电容的检测原理。基于电磁感应原理, 提出一种适用于轨道电路检测小车的补偿电容检测方法, 其核心思想是以 串联电感线圈的方式补偿闭合回路中的电感, 实现对补偿电容的检测; 其次, 基于均匀传输线理论和二端口网络理论建立 无绝缘轨道电路传输模型, 并以电阻、电容和电感等电子元件分模块搭建轨道电路的电路模型, 验证了传输模型的准确 性; 然后, 仿真得到各故障模式下的反馈信号电压数据, 使用 Fisher Score 确定最优特征参数, 构建样本故障特征序列集, 确定最佳灰色关联度模型, 完成了嵌入式设备与故障诊断算法的结合; 最后, 装置以 STM32 F 412 RGT6 芯片为核心, 集成 了激励信号产生、反馈信号接收、滤波、电压采样、实时通信和故障诊断等多项功能。实验结果表明, 装置能稳定生成激 励信号, 有效接收反馈信号, 经滤波电路和电压采样电路处理, 能滤除干扰信号, 获取目标检测数据, 准确判定补偿电容 的故障类型, 并将检测结果实时发送给上位机。装置搭载配套的轨道电路检测小车, 能有效降低人力成本, 提高检测效 率, 对铁路信号部门及铁路建设单位日常维护具有较强的实际应用意义. [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: |
Complementary Index |