Open real-time database cross-process access method

Abstract

The open real-time database cross-process access technology proposed by the present invention adopts a microkernel architecture based on the POSIXIPC mechanism, and the real-time database system attached to it adopts a general pure object-oriented data description method independent of specific problem areas. The program implementation of the open real-time database cross-process access technology is based on the high-performance object-oriented real-time database ChRDB developed by the applicant. With the support of this technology, the ChRDB real-time database system can provide general and open real-time data access services (DDL, DML) to each user process running in the system, and support the efficient modification of each functional module and user process in the SCADA system And access the real-time data in the memory, so as to realize the interaction and logical linkage of various monitoring information.

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 the core component of SCADA system functions, it is the intermediary of real-time data exchange between processes based on memory. The performance of the real-time database subsystem directly determines Improve the comprehensive performance of the entire SCADA system. With the increasing complexity of automation applications, more and more networked intelligent devices and automation subsystems are connected to the SCADA system, and the configuration flexibility, availability, capacity, and data throughput of the real-time database system used are directly proposed. higher requirements. Background technique [0002] In order to save, calculate, process and distribute real-time collected data efficiently, SCADA systems usually provide a memory-based real-time database subsystem. The communication protoc...

AI Technical Summary

Problems solved by technology

[0005] The real-time databases of traditional SCADA systems mostly use domain-specific memory data organization methods, with storage optimization and improved access performance as the main design goals. Older systems also use a single process + functional module DLL that runs in the same process space. (Monolithic) system design, the scalability of the system and the adaptability to different application requirements are poor

The deep coupling of logic and data between various SCADA functional modules caused by design defects also directly leads to the decline of system reliability

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