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针对数据采集与监控(SCADA)系统中突发信息的传输处理问题,利用发布/订阅的消息机制提出了一种基于监听代理的柔性回调方法。对突发信息被动处理带来的问题进行了描述,然后利用消息中间件和回调策略,并与组件技术进行融合封装,建立了松散消息交互的柔性SCADA回调框架。系统的实现综合运用了二级缓存和消息监听代理等技巧。利用工程算例对突发信息的柔性处理系统进行了测试研究,结果表明:相比传统轮询方式,柔性回调技术可使SCADA系统对突发状态变位信息的调用效率提高2个数量级以上,为监控应用集成提供了一种高效处理数据的新方法。
Aiming at the problem of transmission and processing of burst information in data acquisition and monitoring (SCADA) system, a flexible callback method based on sniffer proxy is proposed by using publish / subscribe message mechanism. Describes the problems caused by the passive processing of the burst information, then uses the message middleware and callback strategy, and fuses and encapsulates with the component technology to establish a flexible SCADA callback framework for loose message interaction. System implementation of a comprehensive use of secondary cache and message monitoring agent skills. The engineering example is used to test the flexible processing system of burst information. The results show that the flexible callback technique can increase the call efficiency of SCADA system by more than two orders of magnitude compared with the traditional polling mode, Provides a new way to monitor your application integration for efficient data processing.