短信记录机系统的设计与实现

文档编号:ZD327  文档字数:8720,页数:29

摘    要

 该装置是基于西门子TC35i系列GSM模块设计的短信记录机系统，它能够接收手机短消息，并且通过连接的微型打印机实现将接收到的短消息内容格式化打印。系统由短信接收部分、单片机控制、打印部分三个模块组成。设计中采用单片机作为控制器件，通过C语言编写控制程序，利用AT指令对GSM模块进行初始化控制，将SIM卡插入GSM模块内，通过GSM模块接收短消息，并通过微型打印机将短消息的内容、发信人、及时间打印出来。设计中采用4052芯片对单片机串行接口进行扩展，得到两个串行接口，分别与GSM模块和微型打印机相连。系统中采用异步串行传输数据，接口电路简单易懂。该装置可方便地进行远距离消息的无线接收与记录，实现了用手机收发传真的功能。

关键词：GSM模块  微型打印机  单片机  AT指令  短信息 

Design and Implementation of SMS Records System
 ABSTRACT

 The system is a SMS records system which is based on Siemens TC35i series of GSM module, It can receive mobile phone text messages, and print the short message by micro printer formatted. The syetem includes three modules:the receiving of message, microcontroller and printer. Microcontroller is the control device in the design,which is programmed by C language, and use AT commands to initialize and control the GSM module. A SIM card is inserted into GSM module to receive text messages, and micro-printer prints the messages content, the sender and the time received. In the design , it uses 4052 chip to expand the microcontroller serial interface ,so we can get two serial interfaces, and connect with GSM modules and micro printer. The system uses asynchronous serial to transmist the data, and the interface circuit is easy-to-understand. The system can receive nd record SMS easily through long-distance and wireless, and achieve the function that uses a mobile phone to send and receive faxes.
 
Key words: GSM module  Micro Printer  microcontroller  AT Directive  Short Message

目    录
 
一绪论 1
二相关知识 2
 2.1短消息 2
 2.2 GSM通讯 2
 2.3 AT指令 2
 2.4 Unicode编码 3
 2.5 GB2312编码 3
 2.6 串口通信 4
 2.7小结 4
三系统硬件设计 5
 3.1 系统总体框图 5
 3.2电源转换 5
 3.3单片机与GSM模块的连接 6
 3.4单片机与打印机的连接 7
 3.5串口电路 7
 3.6多串口的实现 9
 3.7小结 10
四系统软件设计 11
 4.1程序流程图 11
 4.2串口的初始化 12
 4.3 GSM模块的设置 12
 4.4 Unicode码到GSM码的转换 11
 4.5小结 14
五系统调试 15
 5.1编程软件Keil  15
 5.2程序下载 15
 5.3调试结果 15
六结论 17
谢辞 18
参考文献 19
 附录 20

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