【摘要】 在对原有电力机车智能无源接地检测装置原理进行分析的基础上,对电压测量电路和装置核心等硬件电路进行了改进设计,以减小体积、提高低压测量精度。并设计了上位机监控调试软件,采用软件方法校准测量回路,简化装置的调试过程;同时可以实时记录现场大量运行数据并形成数据库,便于装置的拓展应用。更多还原

【Abstract】 Based on the analysis of the original intelligent passive grounding fault diagnosis device,It’s put forward that some mea- surements to optimize the design of voltage-sampling circuits and the sdection of the microcontroller.The experimental results showed that the measurement accuracy on low voltage parameters could be improved and the space could be saved.Furthermore,the surveil- lance software running on portable computer is designed to calibrate the voltage-sampling circuit by software,for sake of debugging the device conveniently.It also could real-time record large amounts of running data to form database,availing for extensive use of the de- vice.更多还原