基于51单片机的433M频率的短距离无线通信系统(任务书,开题报告,论文14000字)
摘 要
作为代替有线传输的一种通讯手段的短距离无线通讯是对有线通信方式的有力补充和发展，且因其具有价格低廉、功耗不大、开发上手简单的特点而被大量使用，但相比于有线传输其带宽有限导致数据传输速率不高通讯流量较小。
本文以51单片机作为核心控制器并基于CC1101无线射频通讯芯片进行收发，外加其他外部辅助电路及器件组成了基本的通信传输系统，实现了信息的无线发送和接收。文中先对涉及到的单片机模块、射频芯片模块、串行外设接口、1602液晶显示模块原理和知识进行简要介绍，再给出了系统的硬件和软件实现的各项细节，包括各个模块电路的原理图以及各个功能模块的函数和系统收发的流程图。本系统运行频率为属于ISM规定之内的433M频段，同时系统性能稳定可靠、功耗不大故达到预期的设计要求。
关键词：短距离无线通信；51单片机； CC1101； 433M
Abstract
Short-range wireless communication which is a means of communication to substitute wired transmission, is a powerful complement and development of wired communication, and because it features low price, low power consumption, simple and swift development process so it is applied in large quantities, but due to its limited bandwidth compared to wired transmission, as a result its data transmission rate is relatively not so high and traffic flow is comparatively tiny.
In the paper the core controller is 51MCU, transmission and reception is based on CC1101 radio frequency communication chip, and form the basic communication transmission system plus other external auxiliary circuits and devices, and manage to transmit and receive information wirelessly.The paper first introduces the principle and knowledge of relevant modules such as MCU module, radio frequency chip module, serial peripheral interface module, 1602LCD module, then presents the various details of implementation of the system’s hardware and software,including the schematic of each module circuit and summary of the function of each functionalmodule and the system’s flow chart of transmission and reception.The operating frequency of the system is 433M which is within the band stipulated by ISM regulation, while the performance of the system is stable and reliable, its power consumption is not high so it meet the previously expected design requirements.
Key Words：short-range wireless communication；51MCU ；CC1101 ；433M
目录
摘要 I
Abstract II
第1章绪论 1
1.1研究背景及意义 1
1.2国内外研究状况 2
1.3研究内容及章节安排 3
第2章系统原理介绍 5
2.1单片机模块介绍 5
2.1.1 I/O口 5
2.1.2 串口 6
2.1.3 定时器 7
2.1.4 中断系统 9
2.2 射频芯片介绍 9
2.2.1 四线串行配置和数据接口 11
2.2.2 同步串行SPI 13
2.3 显示模块介绍 15
第3章系统设计与实现 17
3.1硬件设计 17
3.1.1总体设计框图 17
3.1.2单片机最小系统 17
3.1.3 射频模块 18
3.1.4 LCD模块 20
3.2软件设计 21
3.2.1 关键函数介绍 21
3.2.2发送模块 23
3.2.3接收模块 24
3.3测试结果 25
第4章总结与展望 27
4.1工作总结 27
4.2工作展望 27
参考文献 29
致谢 30
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