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Program control method supporting grid parallel branch logic

A technology of program control and sequence, which is applied in the direction of program control and electrical program control in sequence/logic controllers, to achieve the effect of improving flexibility, high execution efficiency and performance

Active Publication Date: 2012-11-14
南京国电南自轨道交通工程有限公司
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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention proposes a program control method Domino that supports lattice parallel branching logic. This method has better flexibility and execution efficiency, that is, it can support complex sequence / level / lattice The description of the set of state control steps can effectively solve various problems in the traditional program control method, and can achieve higher execution efficiency by supporting concurrent operations

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  • Program control method supporting grid parallel branch logic
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  • Program control method supporting grid parallel branch logic

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[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] A lattice is defined mathematically as a partially ordered set on which each subset has a supremum and an infimum. The Domino program control method supports the execution of the remote control action sequence defined by grid, thus realizing the support for complex program control logic and concurrent operation.

[0021] Definition 1 remote control step, remote control step is the basic unit of program control operation, a remote control step in the Domino program control method is defined as a set containing the following five elements: precondition (Precondition), execution action (Action), step transition (Transition) , timeout (Timeout) and failure action (Bypath).

[0022] Definition 2 Program control sequence, the program control sequence in the Domino program control method is a collection of remote control steps, in which the connection ...

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Abstract

The invention discloses a program control method supporting grid parallel branch logic. The method has better flexibility and execution efficiency and can support description of a complex order / layer / grid control step set, effectively solve various problems of the conventional program control method and realize higher execution efficiency by supporting concurrent operation. The programs of a program control method Domino are implemented on the basis of an object-oriented real-time database ChRDB. A real-time database is a medium for data exchange of sub-systems and modules in an SCADA system; data in project configuration is stored in a memory real-time database in an object-oriented way; and the real-time database provides high-speed and real-time data operation and access support for functional modules and sub-processes in the SCADA system.

Description

technical field [0001] The data monitoring and acquisition system (SCADA) is the basis for building many industrial automation applications, and the efficiency and reliability of its remote control function directly determine the performance of the entire system. The program control (sequence control, sequence control) function is an automatic extension of the remote control function, which supports a series of remote control operations in multiple ways through a single user operation, thereby improving the efficiency and reliability of the operation. Background technique [0002] As a support platform for power monitoring (PSCADA), scheduling, environmental control / building automation (BAS) and other application systems, the performance of data monitoring and acquisition system (PSCADA) directly determines the effectiveness of the entire automation application system. The program control method generated on the basis of traditional remote control supports a series of remote...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
Inventor 金舒刘志超戴宏斌
Owner 南京国电南自轨道交通工程有限公司
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