毕业设计（论文）-ISM频段短信互联系统设计.doc

ISM频段短信互联系统设计
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摘要
随着现代工业生产和科学研究对数据传输的要求日益增加,无线传输在机动性要求较强的设备中得到了越来越广泛的应用。系统一般使用射频收发芯片,加上微控制器和少量外围器件构成专用无线通信模块,利用无线通信组网技术,实现指定模块间的信息收发。系统工作于ISM频段,通信模块包含简单透明的数据传输协议,用户不必对无线通信原理和工作机制有较深的了解,只要依据命令字进行操作即可实现基本的数据和文字的无线传输功能,因其功率小、开发简单快速,而在工业、民用等领域应用广泛。单片机由于程序存储器空间大、价格低、速度快、处理能力强,在过程控制、数据采集等领域得到广泛使用。
本文介绍了利用ATmega32单片机和无线数据收发芯片SRW1012构成的短信互联系统的设计方案,模块内嵌T9中文输入法,用PS/2标准键盘输入任意汉字、英文,显示在LCM12864液晶模块上。该系统实现了模块可自动搜索1000米半径范围内同类模块,根据用户要求,可实现指定模块之间的通信。在接收其他模块短信后,在液晶模块上显示收到的短信内容。本文综述了一种实用有效的短信互联系统的设计方案,介绍了其工作原理、硬件电路及C语言程序,提供了较为有效的无线短信互联方式。
关键词 ISM频段;无线组网技术;T9输入法
Abstract
With the increasing demands of modern industrial production and scientific research on data transmission, wireless transmission to strong equipment has been more widely used in the mobility typically use RF transceiver chip, coupled with a microcontroller and a small number of peripheral devices to a private munication module, using a work technology, and messaging between the specified worked in the ISM munication module contains a simple and transparent data transfer protocol, the user does not have a deeper understanding of munications principles and working mechanisms, as long as the operation according to mand word to the basic datawireless transmission function, and text and its power is small, the development of simple, rapid and widely used in industrial, civil and other fields. Single-chip contains program memory space, low price, speed, processing capability, and is widely used in process control, data acquisition.
This article describes the ATmega32 microcontroller and wireless data transceiver chip SRW1012 SMS interconnected system consisting of the design module embedded T9 Chinese input method, the PS / 2 standard keyboard to enter any Chinese character, English, displayed on the LCD module in system module can automatically search for similar modules within a radius of 1000 meters, according to user requi