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Real-time data pushing method for SCADA (supervisory control and data acquisition) system

A real-time data and data push technology, applied in the field of data processing, can solve problems such as information changes rapidly, achieve the effects of low server load, reduced data transmission volume, and high refresh efficiency

Active Publication Date: 2013-11-20
STATE GRID ELECTRIC VEHICLE SERVICE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the information changes rapidly, and when the client needs such information again, it has to obtain it again

Method used

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  • Real-time data pushing method for SCADA (supervisory control and data acquisition) system
  • Real-time data pushing method for SCADA (supervisory control and data acquisition) system
  • Real-time data pushing method for SCADA (supervisory control and data acquisition) system

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The invention provides a real-time data push method for SCADA systems, such as figure 1 As shown, it includes the following steps: the client parses the data information points to be displayed on the monitoring screen, and sends a screen data request to the server; the server queries whether the monitoring screen has been opened through the screen storage structure set, and processes the screen data request according to the opening status of the monitoring screen; the client After the terminal data push thread receives the change data push notification, it obtains the change data from the screen storage structure, then pushes the data to the client, and waits for the change data push notification again; after the client receives the data pushed by the server, it , refresh the corresponding data point. The following is a detail...

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Abstract

The invention discloses a real-time data pushing method for an SCADA (supervisory control and data acquisition) system, which comprises the following steps that: a client parses data information points required to be displayed of a monitoring picture and sends a picture data request to a server; the server queries whether the monitoring picture is opened or not through a picture storage structure set and processes the picture data request according to the open condition of the monitoring picture; the client data pushing thread acquires variation data from the picture storage structure after receiving a variation data pushing notification, then pushes the data to the client, and waits for a variation data pushing notification again; and the client refreshes corresponding data points according to index sequence numbers of the data points after receiving the data pushed by the server. The real-time data pushing method disclosed by the invention can substantially reduce the data transmission amount of the client and the server, the generated network load is low, and the refresh efficiency of the client is relatively high. Meanwhile, the server load is also relatively low because of adoption of a mode of picture sharing.

Description

technical field [0001] The invention relates to a real-time data push method, in particular to a real-time data push method for SCADA systems, and belongs to the technical field of data processing. Background technique [0002] SCADA (Data Acquisition and Supervisory Control) system is a computer-based production process control and scheduling automation system, widely used in electric power, metallurgy, petroleum, chemical and other industries. In order to improve the reliability, openness and scalability of the SCADA system and make it easy to interconnect or share data with other systems, the networked SCADA system based on the client / server model is becoming more and more popular. [0003] At present, the data synchronization between the server and the client in the SCADA system mostly adopts the client-side pull method. For example, the client performs polling every 3 seconds. When the specified time arrives, the client sends a request to the server. When the server re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08
Inventor 尚学伟李军良穆海军王恒马志斌孙頔宋广鹏李西太徐建行时勇刁立明袁平州
Owner STATE GRID ELECTRIC VEHICLE SERVICE CO LTD
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