嵌入式无线定位追踪系统的技术研究

发布时间：2019-01-26 13:29

【摘要】：目前,无线定位技术在车载导航领域应用广泛,但车载导航系统受体积功耗的影响,在灵活性上有一定的局限性,不能随身携带。此外,常见的GPS定位手柄、手机等产品有的偏向于定位追踪方面,有的偏向于通信方面,将定位与通信相结合也是一个热门研究话题,比如,公安执勤、监狱看管、罪犯押运等都对定位与通信功能的结合提出了要求。单独的某一种定位方式都存在一定的问题,例如GPS定位可能会存在搜不到卫星的情况导致无法定位,无线电定位技术定位精度又过低,如何将多种定位方式组合,既能随时随地定到位又能满足精度要求也是目前研究的热点。基于以上情况,研究实用的嵌入式无线定位追踪系统是很有意义的。论文提出了一种解决上述问题的方法,设计了一个嵌入式无线定位追踪系统,系统以GPS定位为主要定位方式,网络定位为辅助方式,通过GSM/GPRS网络完成定位数据的通信。系统分为定位追踪信号源和追踪管理手持机两部分,论文研究了与系统相关的理论基础,根据小体积低功耗需求关注了器件的选型。在此基础上,先后完成了硬件电路的设计和电路板的制备。系统选用NEO-5M接收卫星定位信号,LEON-G100完成辅助定位与信息的相互传输,此外,配备了控制按键和LCD显示屏,为便于数据的后续处理及地图匹配,设计了USB接口电路。最后,在完成硬件设计和软件设计的基础上,研究数据处理滤波方法并仿真分析,并对系统做了一组试验,初步验证系统的经度纬度的单点定位误差在5m以内,动态定位稳定性较好。
[Abstract]:At present, wireless positioning technology is widely used in the field of vehicle navigation, but the vehicle navigation system is limited in flexibility and can not be carried around because of the influence of volume power consumption. In addition, some of the common GPS positioning handles, mobile phones, and other products tend to focus on location tracking and communication. The combination of positioning and communication is also a hot research topic. For example, public security officers on duty, prison custody, The combination of location and communication is required for the transportation of criminals. There are some problems in a single location mode, for example, GPS location may be unable to locate the satellite, the positioning accuracy of radio positioning technology is too low, how to combine various positioning methods, It is also a hot research topic to be able to meet the accuracy requirement and to be in place at any time and anywhere. Based on the above situation, it is very meaningful to study the practical embedded wireless positioning tracking system. This paper presents a method to solve the above problems and designs an embedded wireless positioning and tracking system. The system uses GPS positioning as the main positioning mode and network positioning as the auxiliary way to complete the communication of the positioning data through the GSM/GPRS network. The system is divided into two parts: location tracking signal source and tracking management handset. The theoretical basis of the system is studied in this paper. According to the demand of small volume and low power consumption, the selection of devices is concerned. On this basis, the design of the hardware circuit and the fabrication of the circuit board have been completed. The system selects NEO-5M to receive satellite positioning signal, LEON-G100 completes the auxiliary positioning and information transmission. In addition, the system is equipped with control keys and LCD display screen. In order to facilitate the subsequent processing of data and map matching, the USB interface circuit is designed. Finally, on the basis of hardware design and software design, the filtering method of data processing and simulation analysis are studied, and a group of experiments are made to verify that the single point positioning error of longitude and latitude of the system is less than 5m. The stability of dynamic positioning is good.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN95;TP368.1

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