Double Zhengzhou Technology Engineering Vehicle Information Integrated Management System is based on the actual needs and characteristics of the current management of transport engineering, transport engineering process management and integrated management of vehicle information, based on integration of advanced mobile applications and other management ideas, using a GPS global satellite positioning technology, GPRS mobile communication technology, GIS geographic information systems, communications networks, data processing and other technology research and development in engineering transport integrated management system with independent intellectual property. The system will transport engineering process management and transport operations the perfect combination of dynamic information Sanmenxia truck GPS prices, to provide users with capacity management, security management, maintenance management, fuel management, cost management, business management, engineering transportation management, tracking and management, real-time monitoring and management , operating statistics, online search vehicles, wireless communications, navigation and other comprehensive information management and information services. Transportation system to achieve the project from a single static management to comprehensive real-time, dynamic management, effectively help enterprises to enhance the safe transport management, improve management and efficiency of engineering transport vehicles, to provide customers with quality and quick service while reducing transportation engineering loss of materials, reduce operating costs, enhance economic efficiency of enterprises, enhance the comprehensive competitiveness of enterprises. GPS positioning is what causes the slow GPS positioning is generally slow because of a hardware problem, determine GPS positioning time is that it's time to start positioning time is the time to restart GPS receiver receives location determines the time required for now. For 20-channel receiver, if you locate near the last location of the cold start positioning time is usually 3 to 5 minutes, the hot start of 15 to 30 seconds. Cold start initial use; battery depletion resulting in loss of information ephemeris. GPS can not locate what is the reason the general case of GPS signal vulnerable buildings and metal barrier, so the use of GPS to be outdoors. If you can not locate in the car, if you have an external antenna, the GPS antenna is best placed in the roof, in addition, will also affect the auto film positioning of GPS devices. GPS positioning is not exactly what the reasons 1, GPS positioning system, GPS installation Sanmenxia truck companies, whether truck GPS vehicle positioning system Sanmenxia company or personnel positioning system. Both civilian and military sub-two kinds. Because the GPS satellite positioning system used in the United States military and civilian difference in the signal, GPS positioning system we contacted all of this is to locate the root causes of the civil errors. 2, the map is accurate and detailed GPS positioning system is accurate also factors. 3, misunderstanding truck GPS, GPS positioning system positioning on the electronic map and positioning in reality there is a gap in the electronic map is a coordinate point as a reference position, but in reality this coordinate point may be a building or other object. 4, GPS positioning system itself quality problems, incorrect installation may cause misalignment.