基于Cortex-M3的太阳能无线UHF读写器设计

发布时间：2018-01-31 00:16

本文关键词： 射频识别太阳能充电电源管理 ?COS-II 循环冗余校验算法　出处：《电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：在计算机技术、互联网技术和通信网络技术等第一、二次信息技术浪潮之后,以“物联网”技术为代表的第三次信息技术浪潮正迎我们而来。“物联网”基于互联网,通过射频识别技术、传感技术等技术,将生活中的各种物件与互联网组合成一个大的智慧网络。射频识别技术作为物联网中的关键技术之一,已经被应用于我们生活的各个方面,如校园卡、公交IC卡、公路ETC收费等。简单的来说,射频识别技术是通过电磁或者电感耦合的技术手段,实现电子标签信息的非接触获取的一种自动识别技术。由于目前市场上存在的超高频读写器采用有线供电,并采用有线通信方式与上位机通信,所以它不能独立工作于户外,这极大限制的读写器的应用领域。为了解决此问题,本论文结合太阳能采集技术,在详细分析ISO/IEC 18000-6C协议和无线通信原理的基础上,设计出一款太阳能供电的超高频无线读写器,研究的主要内容有:第一,采用太阳能供电。该读写器的应用场合为户外,将太阳能电池板采集的能量存储到大容量锂电池中,由锂电池给系统供电,并设计出电源管理电路。第二,采用蓝牙模块实现无线通信。该蓝牙模块功耗低、通信距离远,作为读写器和上位机无线通信的方式。第三,超高频读写器硬件电路设计。该电路采用Cortex-M3系列低功耗芯片STM32F103VET6作为主控芯片,处理基带信号。根据UHF协议的要求设计读写器的发射机和接收机电路。第四,详细分析UHF RFID协议ISO/IEC 18000-6C,并用软件实现基带信号的处理。并提出一种新的CRC校验算法,提高读写器的工作效率。第五,移植嵌入式实时操作系统?COS-II至STM32F103VET6,实现多任务处理。用VS2008实现上位机软件的编写。设计完成后,对该读写器进行功能测试,并给出了读写器的测试数据,并通过该数据的出结论,读写器工作良好,已经达到设计目标。
[Abstract]:After the first and second wave of information technology, such as computer technology, Internet technology and communication network technology. The third wave of information technology, represented by "Internet of things", is welcoming us. "Internet of things" is based on the Internet of things, through radio frequency identification technology, sensing technology and other technologies. As one of the key technologies in the Internet of things, RFID technology has been applied to all aspects of our life, such as campus cards. Bus IC card, highway ETC toll, etc. Simply put, radio frequency identification technology is through electromagnetic or inductive coupling technology. An automatic recognition technology for non-contact acquisition of tag information. Because of the existence of UHF reader-writer in the market at present, the UHF reader uses wired power supply and uses wired communication to communicate with the host computer. Therefore, it can not work independently outside, which greatly limits the application of the reader. In order to solve this problem, this paper combines solar energy acquisition technology. Based on the detailed analysis of ISO/IEC 18000-6C protocol and the principle of wireless communication, a solar-powered UHF wireless reader is designed. The main contents of the research are as follows: first. Solar power supply is used. The application of the reader is outdoor. The energy collected by solar panel is stored in the large capacity lithium battery. The system is powered by lithium battery and the power management circuit is designed. Bluetooth module is used to realize wireless communication. The Bluetooth module has low power consumption and long communication distance, which is used as a way of wireless communication between reader and host computer. Third. The hardware circuit of UHF reader is designed, which uses Cortex-M3 series low power chip STM32F103VET6 as the main control chip. Design transmitter and receiver circuit of reader according to the requirement of UHF protocol. 4th, analyze ISO/IEC 18000-6C of UHF RFID protocol in detail. A new CRC verification algorithm is proposed to improve the efficiency of the reader. 5th, transplant embedded real-time operating system? COS-II to STM32F103VET6 to achieve multi-task processing. Using VS2008 to realize the PC software programming. After the design is completed, the reader is tested. The test data of the reader are given, and the conclusion of the data shows that the reader works well and has reached the design goal.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN929.5

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