The GPRS-based location system for the long-distance freight

With the development of the modern traffics, it becomes more important to locate the vehicle running on the highway. This paper introduces the location system for the long-distance freight vehicles, which is based on the global system for mobile communication (GSM) network. The control center and client can communicate to each other based on short message service (SMS) and general packet radio service (GPRS). The client is designed in 8-bit microprocessor to send global positioning system (GPS) information by SMS or GPRS. And the control center adopts a geographic information system (GIS) to track vehicles to display the position information on the electronic map.