摘要
本文介绍了传统水情自动测报系统建设方法及该项目的建设需求,提出了现地传感器复用技术的设计原则,详细阐述了4~20 mA、Modbus-RTU、脉冲量等常规信号的复用方案及实现方法,并结合工程说明了RS-485总线信号衰减、噪声干扰、浪涌干扰等问题的解决方法。经工程应用实践,该方案设计合理,系统运行稳定。
The traditional construction method of reservoir dispatching automation system and the project demand are introduced,the design principles of field sensor information multiplexing technology are put forward,the design and realization of 4-20ma、ModbusRTU、pulsing signal multiplexing technology are expounded,the solutions for attenuation,imitating malfunction and controlling the impulse signal in RS-485 bus are described in detai1 based on engineering experience. The field application shows the design is reasonable and the operation is stable.
出处
《水电自动化与大坝监测》
2014年第2期59-63,共5页
HYDROPOWER AUTOMATION AND DAM MONITORING
