Calculation method based on expansible script language

Abstract

The invention provides a calculation method based on an expansible script language, wherein the calculation method is capable of supporting a user to provide multiple lines of script codes in each calculation service so as to perform various complicated calculation, logic processing and system calling (by executing an application program in a host system). The technology of the calculation method is deeply integrated with an object-oriented ChRDB (Chec Real-Time Database) system and supports the following three types of calculation script logic trigger manners: (1) timer trigger, (2) specific data point variation / write-in trigger, and (3) certain data object variation / write-in trigger, wherein a more complex real-time execution logic based on real-time data can be generated through configuration, and when variable user requirements are confronted during engineering implementation of an automated monitoring project, corresponding work can be completed through configuration, so that the secondary development work load of a system can be maximally reduced.

Description

technical field [0001] Data Monitoring and Acquisition System (SCADA) is the basis for building many power supply and distribution network automation application systems. As an important support for the data processing function of the SCADA system, the computing service function can support virtual remote signaling, switch action / displacement simulation, numerical calculation, Auxiliary logic functions such as statistical calculation and functional linkage between equipment / subsystems. With the improvement of the performance of computer software and hardware systems, users have higher and higher requirements for the data processing capabilities of SCADA systems, and the functions and execution efficiency of computing services have become important technical indicators for evaluating the performance of the entire SCADA system. Background technique [0002] The real-time information sent by remote controlled sites and smart devices obtained by the communication protocol servic...

AI Technical Summary

Problems solved by technology

[0003] Traditional computing services applied to SCADA systems mainly define "calculation" in the following types: (1) Arithmetic operations, such as performing proportional mapping (transformation ratio, multiplication coefficient, etc.), summation, Operations such as average only support the processing of simple numerical data, but cannot support the execution of user-defined logic; (2) Boolean logic operations, the user provides a set of conditional expressions based on certain variables, and the calculation service engine bases on the pair The result of the Boolean operation obtained by the combination is used to select the target action, usually some conditional jumps and the value setting of virtual data objects; (3) Functional operations, including single-line codes such as reverse Polish formula and functional formula (similar to Prolog syntax) / Script-style calculation logic definition, its execution ability can cover various Boolean logic operations supported by the above class, but this type of coding is not intuitive, and it requires deep professional knowledge to describe it freely, and the one-line script is relatively complex The calculation and control logic of the

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