【摘要】 简要对比了HART协议物理层与RS-485、RS-232标准。为了降低成本简化设计,面向应用要求设计了一种定制式的传感器网络系统。该系统物理层采用RS-485、RS-232标准,数据链路层和应用层参考了HART协议。传感器系统在分布式地震监测系统中得到了应用,现场试运行证明这种面向应用的定制化设计简单可靠、应用方便。更多还原

【Abstract】 The physical layer specification of HART protocol and RS-485,RS-232 standards are contrasted briefly.In order to reduce the cost and simplify the design,a kind of customized sensors network system is designed based on the application.The physical layer of this system is based on the RS-485 and RS-232 standards;besides,the data link layer and application layer are defined according to the HART protocol.The sensors system is applied in a distributing earthquake monitoring system,and the test run in situ indicates that the applicationoriented customized design is simple,reliable and convenient.更多还原