基于SIM508的车载GPS终端设计(英文)

Design of vehicle GPS terminal based on SIM508

从优化产品设计和提高竞争力的角度分析了现有车载GPS监控终端设计的不足,表现为定位功能和通信功能由分立的不同硬件模块完成,体积大,可靠性低,维修服务成本高,用户满意度低.以ARM7单片机STR750FV2T6为主控制器,采用集GPS功能和GSM/GPRS功能于一体的SIM508模块作为定位通信的收发器,在保证性能的基础上降低了车载GPS终端的成本和体积,基于消息机制的多任务调度算法,实现了以较低成本的硬件资源完成复杂ARM系统的高效运行.实际测试效果表明,该车载GPS终端可以较好地完成定位、报警、监听等功能,为车辆安全监控技术的进一步研究提供了依据.

From the perspective of optimizing product and improving competitiveness, this paper points out some defects of the common vehicle GPS monitoring terminals, such as low integration of hardware modules, high cost,large size, and low reliability. These defects lead to high cost in maintenance and low customer satisfaction. A novel solution is proposed in this paper to solve these problems. Our solution adopts an ARM7 core STR750FV2T6 as the host controller, and uses GPS/GPRS module SIM508 as the transceiver to locate and communicate. This solution reduces the cost and size of common vehicle GPS termi- nals with a high performance. The experiment result shows that our solution functions well in practical use and can be referred in the further research on vehicle safety monitoring technology.