Design And Implementation Of Lightweight Situation Display System Based On WebGIS

The application of Internet of Things(IoT)technology makes the regional monitoring change from artificial defense to technical defense.The sensing devices in the sensing layer can realize real-time monitoring of regions from multiple dimensions.In the network layer,the acquired information can be quickly delivered and processed based on intelligent networks.Both of these provide more possibilities for the application layer,making application innovation a top priority in the development of the IoT.However,in the IoT system with monitoring,alarming and target recognition as their main functions,sensor devices work independently and are loosely coupled together.Due to the lack of global functional design starting from the demand of "target information display and anomaly detection in the region",and limited to a single form of presentation,the collected raw data is difficult to translate into effective information to help users make decisions.This puts forward higher requirements for information extraction and presentation.It is necessary to play the overall and intelligent advantages of the platform on the basis of the existing devices.In order to solve this problem,this paper introduces the rapidly developing information technology of Geographic Information System(GIS).Considering that although data in the Internet of Things is heterogeneous,a large number of basic physical devices and data collected therein have spatial point information,and these are the good areas for GIS.Based on the IoT and GIS,this paper proposes a situation display method to achieve the global goal-oriented situation presentation device communication display.Meanwhile,this paper puts forward the customized area alarm function in the port area security scene.The user customizes key areas and the system automatic real-time alarm.This system helps port security shift to a high-tech security system platform,and increase safety and security while saving manpower and resources.The system uses SSM(Spring-SpringMVC-MyBatis)lightweight development framework,selects networked and opened WebGIS as GIS service support to combine GIS and IoT data.The system creates a custom GIS resource and packages it with the underlying file system as a service,publishes it as a lightweight RESTful API for client-side invoke,and implements the overall function with AJAX partial refresh with JSON lightweight data transmission format,and CSS layout.At the same time,as a rich client application,advanced data visualization technologies such as HTML5 Canvas,Qunee Topology and iClient Hotspot are used to extract valuable information from the data and present it in the appropriate form.