在当前全球范围内不断增加的恐怖袭击威胁下，公安机关和相关执法机构试图找到更有效的方法来实现对重点关注人员的监测和预警。物联网技术手段的出现为实现这个目标提供了可能，但采用什么体系架构更加有利于实现这个目标是一个挑战。本文通过现有架构和实际需求的具体分析，基于分层模式提出了一个分布式的、可互操作的、适应于警务工作的物联网体系结构，来解决我们传统物联网架构中遇到的问题，为解决实际工作需求提供了一种全新思路。%The public security has been essential for people lives,especially under the circumstance of increasing terrorist attacks worldwide. Police and other involved government agencies try to find more efficient and effective ways to tackle the challenges and threats by using advance technology. The advent of Internet of Things(IoT) has provided the possibility of detecting,monitoring,tracking and predicting the potential suspects who could do harm to the innocent people. One of the major challenges in the realization of this kind of IoT applications is how to integrate all the involved IoT entities we can reach and make full use of them. Thus,the need for a new architecture has been identified through the analysis and research by this article. We propose a distributed,interoperable architecture for IoT to achieve what we want,which will overcome most of the obstacles in the process of large scale expansion of IoT. It specifically addresses heterogeneity of IoT devices,and enables seamless addition of new devices across applications. We propose a layered architecture that provides various levels of abstraction to tackle the issues such as,scalability,heterogeneity and interoperability. Using a study of a possible use case comprising elements from multiple-application domains,we illustrate the usability of the proposed architecture.
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