Multi-node sequential control method based on SCADA system

A sequential control, multi-node technology, applied in the direction of program control devices, etc., can solve the problems of waste of manpower and material resources, high development cost, long development cycle, etc., and achieve the effect of improving efficiency, simple configuration, and increasing stability.

Active Publication Date: 2013-09-04
南京国电南自轨道交通工程有限公司
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Problems solved by technology

However, this model also has the common problem of customized products, the development cycle is too long, and the development cost is too h

Method used

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  • Multi-node sequential control method based on SCADA system
  • Multi-node sequential control method based on SCADA system
  • Multi-node sequential control method based on SCADA system

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[0059] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0060] The present invention adopts the design concept of configuration configuration + background program + interface trigger based on SCADA platform, and its basic working principle is as follows: figure 1 As shown, it is possible to realize one-click operation of remote operations associated with multiple remote switches and in a logical sequence, and to prompt the user for the results of the operation. The logic can be mainly divided into three types:

[0061] a. Sequential execution: all control steps are executed sequentially, and if there is a failure, it will stop and exit the sequence control,

[0062] b. Mixed execution: all control steps are executed sequentially. If there are branches, execute all branches in sequence. If a branch fails, it will transfer to the next branch. If all branches fail, it will stop and exit the sequence c...

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Abstract

The invention discloses a multi-node sequential control method based on an SCADA system. According to the multi-node sequential control method based on the SCADA system, the sequential control method combining tree-shaped pre-configuration and an object logic expression attribute is adopted to reduce the workloads of multilayer configuration of a tree-shaped structure, a sequential control logic analyzer can calculate the logic results of sequential control node objects according to logic conditions of the sequential control node objects, and a main algorithm is that the recursive algorithm of a stack and the recursive algorithm of a queue are utilized for calculating the logic nifix expression. According to the multi-node sequential control method based on the SCADA system, the sequential control objects are classified, a sequential control node of a result type is defined as a key point of sequential control events, one effect of the sequential control node is that the sequential control node serves as a judge condition for subsequent sequential control execution and can simplify the logical expression configuration of other sequential control object nodes, and the other effect of the sequential control node is that the sequential control node outputs a sequential control milestone result and judges whether the sequential control is stopped or not; a sequential control node of a condition type is defined as a precondition of the sequential control objects, and diversity of conditions including digital quantity, analog quantity, pulsed quantity and other forms is achieved.

Description

technical field [0001] The invention relates to the professional technical field applied by the SCADA system platform, covering industrial control industries such as electric power monitoring, water conservancy monitoring, oil and gas chemical industry, rail transit, coal mines, etc., which need to carry out multi-node and logical order monitoring and control services, and is especially suitable for electrified railways and Professional applications such as power monitoring and environmental monitoring in the urban rail transit integrated monitoring system can also be extended to professional and commercial applications with similar functional requirements due to its flexible full configuration mode. Background technique [0002] SCADA (Supervisory Control And Data Acquisition) system is data acquisition and monitoring control system. It can be widely used in many fields such as power system, water conservancy monitoring system, coal, petroleum, metallurgy, chemical industry...

Claims

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Application Information

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IPC IPC(8): G06F9/44
Inventor 翁元朱超包德梅朱恩云
Owner 南京国电南自轨道交通工程有限公司
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