智能电能表中RS-485可靠性设计方法研究  

Research on RS-485 Reliability Design Method in Intelligent Energy Meters

作　　者：梁金梅 陆开洪 梁学柱 LIANG Jinmei;LU Kaihong;LIANG Xuezhu(Longi Meter Co.,Ltd.,Yinchuan 750021,China)

机构地区：[1]宁夏隆基宁光仪表股份有限公司,宁夏银川750021

出　　处：《仪表技术》2024年第4期74-77,共4页Instrumentation Technology

摘　　要：RS-485作为智能电能表中应用最广泛的通信总线,其设计已趋于标准化,但在实际的使用中,由于芯片工艺的波动等因素的干扰,仍然会出现通信不稳定的情况。结合实际案例,深入分析了RS-485芯片因工艺波动导致的可靠性问题,提出了一种利用软件延迟进行准确判断的方法。实验结果表明,该方法有效提升了智能电能表RS-485的通信可靠性。As the most widely used communication bus in smart energy meters,RS-485 has been designed towards standardization.However,in practical use,communication instability still occurs due to interference from factors such as fluctuations in chip technology.Based on practical cases,the reliability issues of RS-485 chips caused by process fluctu-ations are deeply analyzed,and a method of using software delay for accurate judgment is proposed.The experimental results show that this method effectively improves the communication reliability of the intelligent energy meter RS-485.

关 键 词：通信接口 智能电能表 可靠性 脉冲 工艺 

分 类 号：TM933.4[电气工程—电力电子与电力传动]