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智能型测量系统具有总线通道,通过RS 232、RS 485接口将多达64路测量信号输出到任何制式的PLC或计算机系统中,实现远程设定传感器量程及组态。这样的系统也可以称为现场总线系统。与已往的准智能型测量系统相比,智能型测量系统具有以下几个特点: (1)利用现场总线通道实现双向通信。每一测量仪表至少具有两根芯线用来连接过程与控制系统,而采用现场总线结构,将使整个测量系统形成一个闭合环路,所有仪表均可与之相连,这样不仅节省引线、降低成本,而且只需更换测量系统界面单元就可以实现系统的改造。 (2)利用计算机系统对测量仪表实现远程标定及控制。传感系统实现完全由微处理器控制,通信信号叠加于4～20
Intelligent measurement system has a bus channel, through the RS 232, RS 485 interface up to 64 measurement signals output to any standard PLC or computer system, remote setting sensor range and configuration. Such a system can also be called a fieldbus system. Compared with the previous quasi-intelligent measurement system, intelligent measurement system has the following characteristics: (1) the use of field bus channels to achieve two-way communication. Each measuring instrument has at least two cores for connection to the process and control system. With a fieldbus structure, the entire measuring system forms a closed loop with which all instruments can be connected, thus saving not only leads but also cost , And only need to change the measurement system interface unit can realize the system transformation. (2) the use of computer systems for remote calibration and control of measuring instruments. The sensor system is completely controlled by the microprocessor, and the communication signal is superposed on 4 ~ 20