ND5机车故障励磁系统数据采集模块的抗干扰设计

Anti-interference Design for Data Collection from ND5 Engine

介绍了ND5内燃机车在强电磁干扰的环境下,通过采取多种电路抗干扰措施,如接地合理安排和光耦合器隔离技术,有效地抑制EM I(电磁干扰)对数据采集模块的干扰。机车的励磁系统根据数据采集模块提供的准确、可靠的数据,给出控制和保护信号。在此基础上,全程记录机车数据,为技术人员事后分析故障、消除励磁系统存在的隐患提供了技术依据。经过近2年的运行,大大地改善了ND5机车原系统存在的缺陷,从而保证机车励磁系统正常可靠地工作,更好地充分发挥ND5机车的工作效率。

This paper gives some anti-interference means, such as grounding and isolation for EMI of the ND5 engine, so as to restrain interference effectively. The excitation system outputs control and protect signals according to reliabile and accurate collected data. From these, engineers can analyse the failure cause and remove the hidden trouble according to the recorded data. Results of running for two years testify that some system bugs have been corrected effectively, thus ensuring the proper working of excitation system and bringing into full play the ND5 work efficiency greatly.