基于GPS的车载监控终端的设计及其实现

发布时间：2019-05-10 21:03

【摘要】：随着我国城市化进程的不断加深,机动车辆急剧增加,车辆失窃时有发生,防盗及追踪产品已成为当代汽车必不可少的装备。物流业与出租车行业的迅猛发展更是突显了车辆在线管理和跟踪的重要性,加大了对稳定可靠的车辆监控终端的需求。而计算机技术与电子技术的发展为汽车的智能化提供了条件,无线通信技术的高速发展则更是扩宽了数据采集与传输的领域,为车载设备从低端向高端的进步带来可能性。本文为车载监控系统提供了一个较好的解决方案,可实现车辆状态监控、定位、语音调度、报警、状态控制的目的。主要工作和成果如下： 1.针对车载终端系统的功能需求,提出了以LPC2366为核心微处理器的车载监控终端的总体设计框架,并对定位模块及无线通信模块的类型和具体型号进行了选择,结合GPS模块、GPRS模块的功能、结构和引脚定义,完成接口电路的设计； 2.根据框架结构进行各模块原理图的设计,包括电源模块电路、状态采集接口电路、驱动电路等,在芯片选择的基础上利用OrCAD Capture CIS完成原理图的设计； 3.利用SigXplorer软件对走线长度、耦合长度以及耦合距离的影响进行仿真研究,并分析了直角走线的影响,最后在信号完整性分析研究的理论指导下,采用Cadence SPB16.5完成PCB的叠层选择和布局布线设计。 4.针对设计要求提出GPS车载终端的软件结构,介绍了NMEA-0183标准定位数据格式、拨号上网以及套接字通信,着重对GPS数据信息的接收采集与数据的传输进行了设计。经过实际调试,本文提出的实时监控车载终端方案切实可行,可基本承担起车辆监控与定位跟踪的工作要求,且具有较大的扩展空间。
[Abstract]:With the deepening of urbanization in China, the number of motor vehicles has increased sharply, and vehicle theft has occurred from time to time. Anti-theft and tracking products have become an indispensable equipment for contemporary cars. The rapid development of logistics industry and taxi industry highlights the importance of vehicle online management and tracking, and increases the demand for stable and reliable vehicle monitoring terminals. The development of computer technology and electronic technology provides the condition for automobile intelligence, and the high-speed development of wireless communication technology broadens the field of data acquisition and transmission, which brings the possibility for the progress of vehicle equipment from low end to high end. This paper provides a good solution for vehicle monitoring system, which can realize the purpose of vehicle condition monitoring, positioning, voice scheduling, alarm and state control. The main work and results are as follows: 1. Aiming at the functional requirements of the vehicle terminal system, this paper puts forward the overall design framework of the vehicle monitoring terminal with LPC2366 as the core microprocessor, and selects the types and specific models of the positioning module and the wireless communication module, combining with the GPS module. The function, structure and pin definition of GPRS module, and the design of interface circuit. 2. According to the frame structure, the schematic diagram of each module is designed, including power module circuit, state acquisition interface circuit, driving circuit and so on. On the basis of chip selection, OrCAD Capture CIS is used to complete the schematic diagram design. The effects of line length, coupling length and coupling distance are simulated with SigXplorer software, and the influence of right angle alignment is analyzed. Finally, under the guidance of the theory of signal integrity analysis, Cadence SPB16.5 is used to complete the stack selection and layout and routing design of PCB. 4. According to the design requirements, this paper puts forward the software structure of GPS vehicle terminal, introduces the NMEA-0183 standard positioning data format, dial-up Internet access and socket communication, and focuses on the design of GPS data information receiving and collecting and data transmission. After practical debugging, the real-time monitoring vehicle terminal scheme proposed in this paper is feasible, can basically bear the working requirements of vehicle monitoring and positioning tracking, and has a large expansion space.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4;U495

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