传感器网络中数据融合过程的事务分析与建模

Transactional Analysis and Modeling of Data Fusion in Sensor Network

传感器网络是计算机科学技术的一个新的研究领域,它综合了传感器技术、嵌入式计算技术、分布式信息处理技术和通信技术,能够协作地实时监测、处理各种环境或监测对象的信息并传送给用户,具有十分广阔的应用前景。本文以面向事务的观点,基于事务工作流模型,结合数据的时间特性、事务流的依赖关系及数据与事务流间的相互关联,提出事务的控制区域的概念并给出一种基于应用事务的行为语义控制区域的事务模型,为传感器网络数据融合过程提供一个适当的正式模板;给出该模型的提交、回滚、可见定理及规则;通过性能测试,表明该模型提高了数据的相对外化率;模型主要解决了在分布的多用户环境下系统如何控制应用,保证应用语义逻辑的一致性。

Integrating sensor technology, embedded calculation technology, distributed information processing technology and communication technology, sensor network is a new research field in computer science and technology, which could be in collaboration with real time monitoring, processes all kinds of conditions or monitors the information of objects and then transmits to the users. Based on the model of transactional workflows, combined with the time characteristic of data, reliant relationship of transaction flows and interrelation between data and transaction flow, this paper raised the concept of transaction control zone（TCZ）, established a transaetion model based on the control zone of behavior semantics and model submission, rollback, visible theorem as well as regulation, and provided a proper formal template for the process of data fusion in sensor network. According to the performance testing result, it has been shown that the model enhanced the relative outer transformation ratio, resolved the problem of how to control the applieation in distributed multi-user conditions, and ensured the consistency of semantic logic.