【作者】 葛慧杰；

【导师】 徐晓辉；

【作者基本信息】 河北工业大学 ， 物理电子学， 2007， 硕士

【摘要】 随着GPS(Global Positioning System)的普及和技术的成熟,利用GPS技术对汽车进行定位导航已经被人们普遍认可。在此背景下,该论文以车载终端的研制为主要内容,完成了GPS/GSM(Global System for Mobile communication)车辆监控系统的整体框架设计,和车载定位终端详细研制。最后对车辆监控定位的相关技术做了展望。车载定位终端的主要功能是:接收机利用GPS信号,得到车辆的即时位置(经度、纬度、海拔)信息,并将此位置信息通过短消息形式发送至监控中心。在监控中心集成GIS(Geographic Information System)地图的基础上,依靠接收到的短消息中的定位信息完成对车辆的精确监控和定位。GPS定位虽然定位精度高,但考虑到它存在盲点较多的缺陷,该论文又据此设计了一种通过GSM网络定位对GPS定位进行补偿的方案,从而有效地克服了GPS定位盲点多的缺点。论文主要在以下方面作了大量工作:1.通过详尽分析GPS和GSM两种技术各自的特点,确定采用GPS定位,定位信息通过GSM网络进行传输的方针。设计完成了一整套车辆监控系统的实施方案和整体系统框架,进而从软硬件两个方面进行车载定位终端的开发研制。2.根据软硬件设计要求,通过实验选型,性能对比,选取89C52作为微控制器,结合GN-77N GPS·OEM板和TC35I模块完成了车载定位系统硬件电路的设计开发调试,编写调试了各功能软件。3.由于GPS定位时存在盲点,如汽车行驶在林荫道、涵洞、进入车库等情况下,利用STK(SIM TOOL KIT)卡通过GSM网络实现辅助定位。经多次试验证明方法行之有效。更多还原

【Abstract】 The technology of vehicle position is approved along with its development and popularizing. The major works of this thesis are studying Vehicle Mobile Positioning system, and devising the construct of GPS/GSM and some details such as the software and hardware composition.In the end, there are some forcasts for the technology of vehicle Mobile Positioning.The master function of vehicle positioning follows:the receiver obtains the accurate geographical coordinate, azimuth, attitude and other navigation datas on the automobile by the GPS, then tansmit these information to monitoring center by the form of short news. The monitoring center fulfills the accurate positioning of vehicle depending on the contents of short news, which is based upon integrating the GIS (Geographic Information System) map in the monitoring center. Although GPS positioning is with high accuracy, it has some defects that reception can be blocked by obstacles between GPS receiver and satellites.For the sake of improving the technology, a scheme is designed in this paper that GPS positioning is compensated by the GSM network positioning.The major works of this thesis are as follows:1. The system scheme adopting GPS positioning and GSM network transmiting the positional informations is brought forward by analyzing detailedly the charactors of the GPS and GSM. The complete set of design on vehicle position system is finished, then the terminal vehicle position system is studied from the two aspects of software and hardware.2. According to the requirement of the devising software and hardware, a 89C52 chip computer combining with GPS·OEMGN-77N board and TC35I module is choose to finish the devising of electric circuit by experiments and comparing the nature of model .3. For existence of defect when GPS performing task, for example automobile travel in avenue, STK(SIM TOOL KIT) card improve accuracy of positioning by GSM network .after many times experiments the method is proved to be effective.更多还原