车载电子标签的研究与设计

发布时间：2018-03-01 09:16

本文关键词： 车载电子标签天线设计 ETC 测试　出处：《武汉工程大学》2012年硕士论文　论文类型：学位论文

【摘要】：在嵌入式产品随处可见的年代里，电子标签的应用由最初的识别管理延伸到消费、权限控制、交易等领域。而车载电子标签正是集识别、交易于一体的电子标签（属于嵌入式产品中的一类）。车载电子标签的意义不仅是使智能交通系统的实现成为可能，更为重要的是其带来一定的经济效益和良好的社会效应。因此，对车载电子标签进行研究与设计具有一定的现实意义。首先从工程经济学的角度出发，采用德尔菲法对车载电子标签的主要芯片进行选择，并产生两个可选方案。将两个方案的经济指标评价进行比较，并对方案风险进行预估，，最终确定车载电子标签的整体解决方案（即整体设计思路）。从设计的角度出发，对支撑硬件功能的供电电路、液晶显示电路、无线通信电路进行设计。主要采用先介绍芯片的特点，再辅以电路图或示意图进行说明与解释。在软件设计上，采用从简的原则，在确定系统主流程后，对系统的显示流程、中断流程进行设计，为达到简洁的目的，不支持中断嵌套，采用全局内存分配策略。在天线设计时，选用现有的成熟且经典的计算公式进行天线设计，并用HFSS11.0软件进行仿真分析，仿真结果表明天线设计符合要求。最后，对设计后的产品从唤醒灵敏度测试、实验场地跑车测试、ETC车道实际交易测试来验证产品的功能。引用测试中常用的黑盒测试方法进行测试，辅以必要的仪器设备对测试结果进行记录。测试结果表明车载电子标签的目标功能（主要功能）可实现且符合要求。
[Abstract]:In the era when embedded products are everywhere, the application of electronic tag is extended from the original identification management to the fields of consumption, privilege control, transaction and so on. Electronic tags that trade in one (belong to a class of embedded products). The significance of on-board electronic tags is not only to make it possible to implement intelligent transportation systems, What is more important is that it brings certain economic benefits and good social effects. Therefore, it is of practical significance to study and design vehicle electronic labels. First of all, from the point of view of engineering economics, the Delphi method is used to select the main chips of the on-board electronic tag, and two alternative schemes are produced. The economic index evaluation of the two schemes is compared, and the risk of the scheme is estimated. Finally determine the overall solution of vehicle electronic label (that is, the overall design idea). From the design point of view, the power supply circuit, liquid crystal display circuit and wireless communication circuit supporting the hardware function are designed. In software design, the principle of simplicity is adopted. After determining the main flow of the system, the display flow and interrupt flow of the system are designed, so as to achieve the purpose of simplicity. The global memory allocation strategy is adopted instead of interrupt nesting. In antenna design, the existing mature and classical formulas are used for antenna design, and the simulation analysis is carried out with HFSS11.0 software. The simulation results show that the antenna design meets the requirements. Finally, the design of the product from the wake up sensitivity test, the experimental field sports car test / etc lane actual transaction test to verify the function of the product. The test results show that the target function (main function) of the vehicle electronic tag can be realized and meet the requirements.
【学位授予单位】：武汉工程大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP391.44

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