基于ZigBee的低功耗轮轨力无线监测系统设计

Development of a zigbee-based low-power wireless system for monitoring wheel-rail forces

摘要:

为满足对列车运行安全进行高效、低成本监测的实际需求，研究基于地面测试方法的便捷性，设计了一款基于ZigBee的低功耗轮轨力无线监测系统，实现对列车轮轨力的监测。该系统基于轮轨动力学关键指标，通过建立应变与轮轨力的对应关系，集成采集模块、太阳能供电单元及上位机软件的ZigBee无线监测方案，以实现对轮轨力数据的远程、实时与低功耗采集。最后经精度与稳定性验证及实地线路试验，系统监测数据的相对误差和满量程误差均在2%以下，具有良好的测量精度和可靠性。实地线路试验结果显示，C60车型在安全限值内运行，验证了该系统在实际运行中的可行性。

Abstract:

Addressing the need for efficient and low-cost monitoring of train operational safety, this study leverages the practicality of ground-based testing methods to design a low-power wireless wheel-rail force monitoring system based on ZigBee technology. Focusing on key wheel-rail dynamics parameters, the system establishes the correlation between strain and wheel-rail force, integrating data acquisition modules, a solar power unit, and upper-computer software into a cohesive ZigBee-based wireless monitoring solution. This enables remote, real-time, and low-power acquisition of wheel-rail force data. Validation tests for accuracy and stability, along with field line trials, demonstrated that both the relative error and full-scale error of the monitoring data were below 2%, confirming good measurement precision and reliability. Field test results further showed that the C60 train model operated within safety limits, verifying the system"s feasibility in real-world applications.