GPS on-vehicle terminal system

The invention discloses a GPS on-vehicle terminal system which comprises the components of a microprocessor, a GPS module, a GPRS module, an I/O optical coupler isolating module, a memory module, a display module, an analog-to-digital (A/D) module, a voice broadcast module and a picture acquisition module. The microprocessor comprises an initializing module, a foreground interruption module and abackground cycling monitoring module. The GPS on-vehicle terminal system is advantageous in that the GPS on-vehicle terminal system has functions of voice broadcasting, facilitating information searching by a driver at any time and picture acquiring. When a traffic accident occurs or a problem occurs in operation of a vehicle, real-time recording and reading can be performed on the field information of the vehicle, thereby realizing a purpose of real-time helping, monitoring fuel quantity in real time, and supplying data basis for monitoring the fuel consumption of the vehicle by an enterprise. 本发明公开了种GPS车载终端系统，它包括微处理