First, the demand analysis
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With the economic development and social progress, the road dangerous goods transportation industry is increasing day by day, the threat to towns, groups and rivers is increasing, and the safety of dangerous goods transportation has received more and more attention. Many liquefied gas transport vehicles are driving on the streets every day. The safety monitoring problem of driving has always caused headaches for transport units and fire departments. In the past, when the vehicle was driving, the company could only contact by high-frequency telephone, which was very inconvenient. And in the event of an accident, the relevant can not be handled in time.
Therefore, it is especially necessary to establish a system that can monitor and schedule mobile targets in real time and manage them in a unified manner. The development of 3G technology (GPS, GIS, GSM) has made it possible to build a system. Using high-tech comprehensive monitoring of dangerous goods vehicles, you can clearly and real-time understand the location of the vehicle in the urban area on the electronic map, display the instantaneous speed of the vehicle, and store information such as the speeding record and illegal route of each driver. Central database.
Demand characteristics of GPS monitoring and dispatching system for dangerous goods transport vehicles: high requirements for safe transportation support; rapid response to alarm information requirements; strict restrictions on vehicle operating routes and areas; strict control of vehicle operating speed.
Second, the system concept
The dangerous goods vehicle monitoring and dispatching system is a comprehensive software and hardware system integrating global satellite positioning system (GPS), geographic information system (GIS) and wireless communication technology. It is mainly composed of three parts: vehicle terminal, wireless data link and monitoring center system. The vehicle can be centrally managed and monitored in real time.
The GPS monitoring and dispatching system of dangerous goods transportation vehicles has the functions of real-time dynamic monitoring of all-weather and full-route vehicles, and is mainly used for various purposes such as tracking, scheduling, supervision, historical record inquiry, security alarm, and vehicle file management.
Powerful vehicle accurate positioning, real-time monitoring, and efficient scheduling functions;
Fast alarm handling mechanism to minimize losses caused by unexpected situations;
Provide a variety of monitoring methods to focus on specific areas and lines;
Compatible with a variety of vehicle terminals, giving users a high degree of flexibility in hardware selection;
Can support multiple communication methods at the same time, including GSM/CDMA short message, GPRS, cluster;
The system has complete security and automatic disaster recovery mechanism to ensure the security and stability of the system;
Accurate digital maps and professional map service support;
The industry's leading high-speed 2DGIS and 3D GIS engine is especially suitable for real-time monitoring systems.
Third, the system function introduction
1. Vehicle tracking monitoring
The system establishes a fast, accurate and effective information transmission channel between the vehicle and the monitoring center. The monitoring center can keep track of the vehicle status and quickly issue scheduling commands. Service information can also be provided for vehicles, and a variety of monitoring methods are available.
2. Speeding/parking alarm
Dangerous goods transport vehicles generally have a finite speed driving rule and cannot be parked at will during transportation. The monitoring center can preset the speed limit, and when the vehicle's running speed exceeds or falls below a specified threshold, an alarm message will be automatically issued. In order to monitor the control measures, the driver should pay attention to the speed or ask the driver to report the situation.
3. Historical track record query
The trajectory information of the dangerous goods transport vehicles during driving will be recorded and saved for later inquiry. The user can select the past time period, query the historical data of the specified vehicle in the time period, and perform historical echoing, which is a good assistant for the accident analysis.
4. Emergency alarm
When the vehicle encounters an emergency, it only needs to press the alarm button, and the vehicle terminal will automatically send alarm data to the monitoring center, and the vehicle position will be displayed on the monitoring terminal, and the sound and light will be prompted. In addition, when there is a danger or a traffic accident or a vehicle failure during driving, the alarm button of the vehicle terminal can be used to call the monitoring center for help. The monitoring center can also monitor and record the situation inside the car.
5. Area/yaw alarm
In order to strengthen the dispatch management, the vehicle is generally required to exercise a fixed route or can only operate in a specific area. In the system, the driving route is preset for the task vehicle. At the beginning of the mission, the vehicle travel route and status are monitored and recorded. If the vehicle does not drive according to the preset driving route or exits the setting area, the system will automatically alarm, the center can Take measures according to the actual situation.
6. Vehicle unified information management
The system enables vehicles to carry out centralized and unified information management. Management content covers vehicle license plate number, car number, model, color, engine number, chassis number, use, etc. The system collects and records all of the vehicle's information and then provides the user with modification, deletion, and query functions.
Fourth, system benefits
The vehicle is monitored throughout the entire operation and the transportation safety is truly guaranteed. Auxiliary accident analysis, the accident situation is ready to check; unified vehicle information management, improve the level of management information; improve the speed of accident response, reduce the loss of the accident to a minimum.
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