基于433MHz的微功率无线通信系统的设计与应用
发布时间：2018-11-24 08:12
【摘要】：经历过几次阶段性跨越发展之后,今天的无线通信技术已经被广泛用于我们平时的日常生活之中。而短距离无线通信技术,作为其重要的一支,也得到了长足的发展。从常见的红外通信、蓝牙通信和WiFi到超宽带通信技术以及Zigbee,虽然种类多样,但是对“短距离、微功率、且有一定穿墙能力的低成本无线通信”这一需求来说,上述几种方法都不能很好的满足。针对这一问题,本文设计并开发了基于433MHz的短距离微功率无线通信系统终端。首先,本文对该系统的应用场景做了简单介绍,并给出了较为全面的需求分析。经过多种方案的比较之后,根据本项目的整体需求,选择了瑞萨公司的RL78系列G13族芯片作为嵌入式平台,并据此提出了微功率无线通信系统终端的总体方案。硬件上围绕主控芯片R5F100FE和射频芯片Si4432进行了功能模块的划分以及各模块的电路原理图的设计。随后根据各模块的原理图,进行了符合PCB设计流程及规范的印刷电路板设计工作,完成了元器件布局和布线。其次,本文介绍了如何搭建软件编写环境和硬件测试环境,同时对微功率无线通信终端的基础软件系统需求进行了分析,总结出需要实现的功能,并根据该功能需求设计了无线通信终端主从机各自的状态机制,给出了各自的状态图。为了实现微功率的指标,系统的主程序采用了一种“中断检测处理”的设计思路,这样可嵌入式微控制器大部分时间处于低功耗的休眠状态,当有需要处理的任务出现时再进行处理。无线通信部分的系统软件,严格定义了通信包和无线通信收发的流程。此外还设计了主机无线空中唤醒休眠从机的流程,并给出了严谨的唤醒操作时序图,从而解决了无线通信模块微功率的实现问题。然后,对微功率无线通信系统终端的实物进行了各种测试,其中包含系统功能测试和性能可靠性测试。经过不断的反复的测试表明,本文设计与开发的微功率无线通信系统实现了基于433MHz的短距离无线通信,并且有一定的穿墙通信能力。此外还同时完美实现了微功率指标。整个系统运行稳定,满足了小范围内短距离无线通信组网的需求。最后,对该微功率无线通信系统终端在医疗陪护方面的实际应用做了相关探讨与设计,根据国内目前的医疗陪护通信需求做了对系统软件深入优化,并给出了小型组网的简单协议。
[Abstract]:After several stages of development, today's wireless communication technology has been widely used in our daily life. Short-range wireless communication technology, as an important branch, has also been greatly developed. From common infrared communications, Bluetooth communications and WiFi to ultra-wideband (UWB) communication technologies, and Zigbee, though diverse, is required for "low-cost wireless communications with short distances, micro-power, and a certain ability to penetrate the wall." None of the above methods can be satisfied very well. To solve this problem, this paper designs and develops a short-range micro-power wireless communication system terminal based on 433MHz. First of all, this paper introduces the application of the system, and gives a more comprehensive requirements analysis. After the comparison of various schemes, according to the overall requirements of the project, Risa RL78 series G13 family chips are selected as embedded platform, and the overall scheme of micro-power wireless communication system terminal is put forward. In hardware, the main control chip R5F100FE and RF chip Si4432 are divided into functional modules and the circuit schematic of each module is designed. Then, according to the schematic diagram of each module, the design work of printed circuit board conforming to PCB design flow and specification is carried out, and the layout and wiring of components are completed. Secondly, this paper introduces how to build the software programming environment and hardware test environment, and analyzes the basic software system requirements of the micro-power wireless communication terminal, and summarizes the functions to be realized. According to the function requirement, the state mechanism of the master-slave of wireless communication terminal is designed, and their state diagrams are given. In order to realize the index of micro-power, the main program of the system adopts a design idea of "interrupt detection processing", so that the embedded microcontroller can spend most of the time in low-power sleep state. Processing occurs when tasks need to be processed. Wireless communication part of the system software, strictly defined the communication packet and wireless communication transceiver flow. In addition, the flow chart of the host wireless air wake-up sleep slave is designed, and the precise sequence diagram of the wake-up operation is given, which solves the problem of the realization of the wireless communication module micro-power. Then, various kinds of tests are carried out on the terminal of micro-power wireless communication system, including system function test and performance reliability test. After repeated tests, the micro-power wireless communication system designed and developed in this paper has realized the short-range wireless communication based on 433MHz, and has a certain ability to communicate through the wall. In addition, the micro-power index is also realized perfectly at the same time. The whole system runs stably and meets the demand of short-range wireless communication networking in a small range. Finally, the paper discusses and designs the practical application of the terminal of the micro-power wireless communication system in the field of medical escort, and optimizes the system software according to the requirement of medical escort communication in China. A simple protocol for small scale networking is also given.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN92
，
本文编号：2352930
[Abstract]:After several stages of development, today's wireless communication technology has been widely used in our daily life. Short-range wireless communication technology, as an important branch, has also been greatly developed. From common infrared communications, Bluetooth communications and WiFi to ultra-wideband (UWB) communication technologies, and Zigbee, though diverse, is required for "low-cost wireless communications with short distances, micro-power, and a certain ability to penetrate the wall." None of the above methods can be satisfied very well. To solve this problem, this paper designs and develops a short-range micro-power wireless communication system terminal based on 433MHz. First of all, this paper introduces the application of the system, and gives a more comprehensive requirements analysis. After the comparison of various schemes, according to the overall requirements of the project, Risa RL78 series G13 family chips are selected as embedded platform, and the overall scheme of micro-power wireless communication system terminal is put forward. In hardware, the main control chip R5F100FE and RF chip Si4432 are divided into functional modules and the circuit schematic of each module is designed. Then, according to the schematic diagram of each module, the design work of printed circuit board conforming to PCB design flow and specification is carried out, and the layout and wiring of components are completed. Secondly, this paper introduces how to build the software programming environment and hardware test environment, and analyzes the basic software system requirements of the micro-power wireless communication terminal, and summarizes the functions to be realized. According to the function requirement, the state mechanism of the master-slave of wireless communication terminal is designed, and their state diagrams are given. In order to realize the index of micro-power, the main program of the system adopts a design idea of "interrupt detection processing", so that the embedded microcontroller can spend most of the time in low-power sleep state. Processing occurs when tasks need to be processed. Wireless communication part of the system software, strictly defined the communication packet and wireless communication transceiver flow. In addition, the flow chart of the host wireless air wake-up sleep slave is designed, and the precise sequence diagram of the wake-up operation is given, which solves the problem of the realization of the wireless communication module micro-power. Then, various kinds of tests are carried out on the terminal of micro-power wireless communication system, including system function test and performance reliability test. After repeated tests, the micro-power wireless communication system designed and developed in this paper has realized the short-range wireless communication based on 433MHz, and has a certain ability to communicate through the wall. In addition, the micro-power index is also realized perfectly at the same time. The whole system runs stably and meets the demand of short-range wireless communication networking in a small range. Finally, the paper discusses and designs the practical application of the terminal of the micro-power wireless communication system in the field of medical escort, and optimizes the system software according to the requirement of medical escort communication in China. A simple protocol for small scale networking is also given.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN92
，
本文编号：2352930
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