RS485总线在近地层通量观测系统中的应用  

Application of RS485 Bus in Near-Surface Layer Flux Observation System

作　　者：胡晓晖 王西育 郝志毅[1] 

机构地区：[1]中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室中国气象局干旱气候变化与减灾重点开放实验室,兰州730020 [2]甘肃省张掖国家气候观象台,张掖734000

出　　处：《气象科技》2009年第4期444-447,共4页Meteorological Science and Technology

基　　金：国家自然科学基金(40765001);干旱基金(IAM200817);甘肃省气象局科技发展基金(2008-02)共同资助

摘　　要：RS485接口具有良好的抗噪声干扰性、长传输距离和接收多站数据能力等优点,使其成为分布式测量控制系统首选的串行接口。介绍了RS485总线的特点、工作方式、组网及在张掖近地层通量观测系统中的具体应用,同时探讨了RS485总线使用中的一些问题及采取的应对措施。An introduction is made to the application of the RS485 bus in the near-surface layer flux observation system at Zhangye, as well as the characteristics, working mode, and networking of the RS485 bus, which consists of there subsystems： eddy covariance system, gradient system and wind energy observation system. About one-year application of the RS485 bus at the Zhangye National Climatological Observatory indicates that it is stable, has good anti-noise capability, and can be used in long-distance data transfer.

关 键 词：RS485总线 通量观测系统 串行接口 

分 类 号：P425.21[天文地球—大气科学及气象学] TP273[自动化与计算机技术—检测技术与自动化装置]