| In recent years, more and more people can afford to buy private cars as economic andconsumption levels have apparently improving. For car owners, car has become their mostimportant travel transport. However, due to lack of transportation construction, urban roads ofpoor planning and traffic management in place, the sharp increase in the number of carsincreasing complexity of urban road traffic, and very serious traffic jams, traffic accidentsoccur frequently on people’s personal safety and property security caused greatly threatened.Every year due to billions of property damage caused by traffic accidents, improve the trafficsituation is already imminent. Real-time monitoring of vehicles, always pay attention to roadtraffic conditions and management, real-time to analyze and calculate the shortest path to thelane so that vehicles can smoothly pass, can effectively relieve the traffic congestion can bereduced to some extent, and to avoid traffic accidents occurred.Although there are a variety of the shortest path algorithm and the correspondingoptimization method to improve the algorithm in practice, a more accurate traffic informationin real-time monitoring and analysis. However, the randomness and uncertainty of trafficinformation, these algorithms can only reflect the macroscopic flow of the road situation,these statistics only static scope of the shortest path and can not get real-time dynamic datacalculated. Real-time vehicle monitoring and navigation, the soul, so the real-time trafficinformation that has practical significance, must obtain the real-time dynamic vehicle trafficinformation to the shortest path for the vehicle to provide real-time dynamic vehiclenavigation. At present, GPS technology, highly developed and widely used in vehiclenavigation, the exact location of the vehicle data. In this way, more effective real-timemonitoring of traffic information. Shortest path algorithm based on the shortest path of thevehicle monitoring and navigation systems, to improve, to establish the information modelcan reflect the real road conditions, real-time traffic. Emergency Dispatch implementation ofmanagement systems is born in this context.Implementation of Emergency Dispatch Management Information System is an important foundation for the construction of the emergency response system. How to respondto these disasters, as far as possible to minimize the losses caused by these disasters, the useof limited manpower and resources can be make reasonable arrangements. This requires acomputer system–the Implementation of the Emergency Dispatch Management InformationSystem to solve these problems.The system is supported by the software–Mapxtreme, which is developed by thecorporation MapInfo. Meanwhile, we use the Microsoft Visual Studio2008during the processof development. The main function of our system is to achieve the path to find discrimination,including: Through the Oracle database to realizes the function; Users can access locations onthe map and select the shortest path based on two points, calculate the shortest distance;Display the shortest path on the map; Given road a speed and then calculate the shortest pathand time.The goal of the emergency dispatch system with the crisis management process, theapplication of information technology to achieve a large area, multi-disciplinary anddepartmental information resources, real-time scheduling of resources and communicationresources in this process, with some basicnetwork of more specialized applications and avariety of technical support, making the emergency command system more scientific andvisualization. Main components are: disasters processing system, the daily businessprocessing systems, communications, dispatch and command system, plans and regulations,case management system, incident reporting system, the event changes in feedback systems,disaster management record systems, intelligent plan management engine, informationflow-sharing systems, electronic information systems, simulation deduction system, and otherauxiliary systems.The System use computer technology, information technology, information managementtechnology and decision support technology, make the emergency management departmentsto make use of modern means in major hazard control. system make the emergency dispatchbecome decision-making becomes,scientific and intelligent. |
