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Device for realizing real-time updating of database and data real-time updating method in boiler control based on OPC (OLE for Process Control) server

A boiler control and real-time update technology, applied in electrical digital data processing, special data processing applications, instruments, etc., to achieve the effect of convenient and fast data insertion operation, small data volume, and flexible data transmission

Active Publication Date: 2012-09-12
宁波智能装备研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the problem of fast storage of real-time database data of an OPC server in boiler control, and to provide a device and method for real-time data update based on an OPC server-based real-time database in boiler control

Method used

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  • Device for realizing real-time updating of database and data real-time updating method in boiler control based on OPC (OLE for Process Control) server
  • Device for realizing real-time updating of database and data real-time updating method in boiler control based on OPC (OLE for Process Control) server
  • Device for realizing real-time updating of database and data real-time updating method in boiler control based on OPC (OLE for Process Control) server

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specific Embodiment approach 1

[0051] Specific implementation mode one: the following combination figure 1 The present embodiment will be described.

[0052] A real-time data update device based on an OPC server-based real-time database in boiler control, which includes a host computer 1, a real-time database 2 with a built-in OPC server, and multiple lower computers 3;

[0053] The upper computer 1 is connected to the real-time database 2 with the built-in OPC server through the OPC interface, and the real-time database 2 with the built-in OPC server is connected with multiple lower computers 3 through the communication bus.

specific Embodiment approach 2

[0054] Specific implementation mode two: the following combination figure 1 Describe this embodiment, this embodiment is a further description of Embodiment 1,

[0055] The real-time data update device based on the real-time database of the OPC server in the boiler control, the data transmitted by each lower computer 3 to the real-time database 2 with the built-in OPC server includes read and write flag bits, CRC check digits, and address bits of the lower computer 3 And the data value information of the lower computer 3.

specific Embodiment approach 3

[0056] Specific implementation mode three: the following combination figure 1 Describe this embodiment, this embodiment is a further description of Embodiment 1,

[0057] The real-time data update device based on the OPC server real-time database in the boiler control, the data bus 4 is a serial RS485 communication bus.

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Abstract

The invention discloses a device for realizing real-time updating of a database and a data real-time updating method in boiler control based on an OPC (OLE for Process Control) server, aiming to solve a problem of quick data storage of a real-time data of the OPC server in boiler control and relating to a data controll method. The device provided by the invention comprises an upper computer, a real-time database with an internal OPC server and multiple lower computers; the upper computer is connected with the real-time database of the internal OPC server through an OPC interface; and the real-time database of the internal OPC server is connected with multiple lower computers through a communication bus. According to the device provided by the invention, the data real-time updating method comprises steps that 1, firstly, a temporary table Tmp table is established for each lower computer by the real-time database of the internal OPC server according to a communication address; 2, the real-time database stores data at previous time by a map table; and 3, quick data insertion and OPC server data updating of the real-time database are processed. The device and the data real-time updating method disclosed by the invention are used for real-time data control in the boiler control.

Description

technical field [0001] The invention relates to a data control method. Background technique [0002] The real-time database is to solve the data storage in the industrial production process and the data sharing between the host computer software. Its main feature is fast storage speed, emphasizing the time consistency of data. [0003] Since real-time databases store data in memory, the storage speed is about 100 times that of traditional databases, or even higher. In this way, in industrial production, the data transmitted from the lower computer can be quickly stored without causing data loss. Each data in a real-time database has strict time characteristics, which can be accurate to the ms level, which cannot be achieved by traditional databases. [0004] The consistency of data is the value that each operation has a strict time limit, and there are perfect process calls in the database to ensure the time characteristics of data storage and access. However, in a certa...

Claims

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Application Information

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IPC IPC(8): G06F17/30H04L29/06
Inventor 钟贤德王庆领孙一勇王光高会军
Owner 宁波智能装备研究院有限公司
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