摘要： 为了满足地铁车辆使用的小型电器设备在加速试验过程中的在线电性能参数测试的需求，通过对传统的小型电器设备在线测试电源、测试设备及数据处理系统进行改进，提出了一种基于加速试验的地铁车辆小型电器设备在线测试系统。针对地铁车辆小型电器设备对电源系统的特殊要求提出了具有交直流转换、电压可调、大功率、高精度的电源设计方案。同时设计了信号采集、传输的测试电路及可存储、处理数据的软件平台，并应用于实际的加速试验中证明该测试系统是可行的。这种应用于加速试验的地铁车辆小型电器设备在线测试系统可实时检测小型电器设备的吸合时间、接触电阻等数据，为小型电器设备的维修维护提供重要的参考数据。

中图分类号：TP23；U224.4 文献标志码：A DOI: 10.16157/j.issn.0258-7998.234012
中文引用格式： 尹洪权. 地铁车辆小型电器设备加速试验在线测试系统[J]. 电子技术应用，2024，50(1)：45-49.
英文引用格式： Yin Hongquan. Online test system for metro vehicle small electrical equipment accelerated test[J]. Application of Electronic Technique，2024，50(1)：45-49.

Online test system for metro vehicle small electrical equipment accelerated test

Abstract： In order to meet the requirements of online electrical performance parameter testing for various small electrical components of metro vehicles under the accelerated test， an online test platform for small electrical equipment of metro vehicles based on accelerated test was proposed through the design and improvement of the traditional online test power supply， test equipment and data processing system. According to the special requirements of small electrical equipment for metro vehicles， the design idea of power supply with AC and DC， adjustable voltage， high power and high precision was put forward. The test link of electrical signal acquisition and transmission was designed， and the feasibility of the test link was proved in the actual experiment. An online test system which can process the electrical signal data in real time and calculate and store the electrical performance parameters of small electrical equipment of metro vehicles was constructed.

Key words : metro vehicles；small electrical equipment；evaluating indicator；accelerated test；test platform