摘要
为提高以单片机为核心设计的低压监控装置的可靠性,本文对装置的抗干扰技术进行了研究。借助理论分析和干扰实验,分析了低压监控环境下的干扰因素,将主要干扰确定为接触器控制线圈导通或分断时产生的过电压。据此,在抑制干扰源、切断干扰传播路径和提高敏感器件抗干扰能力等方面提出了详尽的硬件抗干扰措施,其有效性已通过计算机仿真和工程实践得到验证。
In order to improve the reliability of low-voltage monitoring device based on single chip microcomputer,the technologies of anti-interference are researched.Theoretical analysis and interference experiment are made to analyze the interference sources,and it’s confirmed that the main interference is the overvoltage caused by junction or disjunction of contactor winding.According to this conclusion,hardware methods of anti-interference on restraining interference sources,cutting off propagation path and enhancing anti-interference performance of sensitive elements are proposed.These methods have been validated by simulation and engineering practice.
出处
《电测与仪表》
北大核心
2010年第7期65-68,73,共5页
Electrical Measurement & Instrumentation
关键词
低压配电监控
单片机
抗干扰
过电压
low-voltage power distribution monitoring
single chip microcomputer
anti-interference
overvoltage
