Fieldbus information transmission method
A field bus and information transmission technology, applied in the field of power information transmission, can solve problems affecting the stability and accuracy of field bus information communication, controller crashes, and lagging of hard-line equipment, so as to reduce communication data and improve real-time performance and accuracy, the effect of reducing the load rate
Active Publication Date: 2016-05-11
NORTH CHINA ELECTRICAL POWER RES INST +1
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Problems solved by technology
Since the DCS controller also needs to perform calculations on other DCS hard-wired devices and transmitters, increasing the load rate of the controller may cause hysteresis of the hard-wired devices, or affect the stability and accuracy of fieldbus information communication. Even cause the controller to crash and other problems
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[0012] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.
[0013] figure 1 It is a schematic flowchart of a field bus information transmission method according to an embodiment of the present invention. Such as figure 1 As shown, the method includes:
[0014] In step S101, the field device sends binary fieldbus information to the DCS controller. Among them, field devices include: field bus valves, electric actuators, motors and transmitters.
[0015] Step S102, the DCS controller sorts and encodes the obtained binary fieldbus information according to a preset encoding method, converts it into decimal fieldbus information, and sends it to the fieldbus HART management station.
[0016] Step S103 , the fieldbus HART management station performs the inverse operation from decimal to binary on the fieldbus information in de...
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The invention discloses a fieldbus information transmission method. The method includes: a field device emits binary fieldbus information to a DCS controller; the DCS controller performs ranking and encoding of the obtained binary fieldbus information according to a preset encoding method, converts the binary fieldbus information to decimal fieldbus information, and sends the decimal fieldbus information to a fieldbus HART management station; and the fieldbus HART management station performs inverse operation of the decimal fieldbus information from a decimal system to a binary system, obtains corresponding information of the fieldbus device, and records and displays the information via an image. The fieldbus information transmission method is applicable to various DCS control systems, data of communication between the DCS controller and the HART management station can be greatly reduced, the load rate of the communication of the controller is reduced, the timeliness and accuracy of fieldbus information transmission can be appropriately improved, work personnel can understand the operation condition of the fieldbus device and a transmitter in a more detailed and comprehensive manner, and the influence on DCS control logic is prevented.
Description
technical field [0001] The invention relates to the field of electric power information transmission, in particular to a field bus information transmission method. Background technique [0002] Fieldbus Congtrol System (Fieldbus Congtrol System) is developed from DCS (Distributed Control System, Distributed Control System). It is a control system that uses fieldbus as a communication system. It replaces the I / O bus in DCS with fieldbus. And directly used in the production site. In addition, fieldbus digital instruments are used to replace field analog instruments in DCS. Its transmitters not only have functions such as signal conversion, compensation, and accumulation, but also have functions such as PID operation control. The actuators not only have driving and regulating functions, but also have Characteristic compensation, self-calibration, self-diagnosis, and PID control functions. [0003] At present, more and more field buses are used in thermal power units, and the ...
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IPC IPC(8): G05B19/418
CPCG05B19/4185G05B2219/34051
Inventor 高明帅刘磊李卫华骆意鲁学农尚勇陈振山邢智炜
Owner NORTH CHINA ELECTRICAL POWER RES INST