5公里无线数传电台设计

毕业设计说明书5公里无线数传电台设计

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5公里无线数传电台设计

摘要

无线数传电台是区别于语音电台的一种用于数据传输的无线电台，其在许多领域具有重要的意义。本文对数传电台进行了相应的研究，设计基于无线射频通信的数传电台，主要由发射机、接收机、锁相环、基带处理及调制解调、接口单元及电源管理等组成，实现有效距离5公里，能满足不同系统的使用需求。

本文采用了凌阳SPCE061A单片机和Digi公司的Xtend无线模块设计了一款无线数传电台。该电台能实现较长距离的室外通信距离，在室内通信距离也达900米。该电台的采用433MHz的调制频率，该频率向公共用户开放，使用时无需申请。该电台通过相应的协议可以轻松实现两机通信和多机通信。经测试该电台操作简单，性能稳定，具有一定的实用价值。

关键词：数传电台，SPCE061A单片机，无线通信，Xtend模块，RS-232串口

A five kilometer of wireless data radio station

Abstract

The wireless data transmitter is different from the radio voice radio for data transmission, is of great significance in many areas. Corresponding research data radio design is based on radio frequency (RF) data radio communication transmitters, receivers, phase locked loop, baseband and modem interface unit and power management components, to achieve effective distance of 5 km, and can meet the needs of the different systems.

An ultra-long-distance wireless data radio station is designed based on the SPCE061A of Sunplus and Xtend wireless module of Digi Company in this paper. The communication distance of the radio station is long outdoor and 900 meters indoor. the radio station works on 433MHz modulation frequency, which is open to the public user without applying for. The radio station can easily implement two-machine communication and multi-machine communication through the appropriate protocol. The radio station is simple, stable performance through testing, with some practical value.

Keywords:Data radio station, SPCE061A single chip, Wireless communication, Xtend module, RS-232 Serial Port

目录

1 绪论............................................................. VI 1.1 课题的背景意义.................................................. VI 1.2无线数传电台的技术现状.......................................... VII

1.3课题的主要工作................................................. VIII

2 系统方案设计..................................................... IX 2.1系统设计要求和设计原则........................................... IX 2.1.1长距离通信可实现性............................................. IX 2.1.2性能可靠性..................................................... IX 2.1.3操作方便性..................................................... IX 2.1.4可扩展性....................................................... IX 2.2 系统的组成...................................................... IX

2.3 本章小结......................................................... X

3 系统方案硬件设计................................................ XII 3.1 电源模块设计.................................................. XII 3.2 单片机系统设计................................................ XIII 3.3 单片机调试和下载电路设计...................................... XIII 3.

4 Xtend无线模块................................................. XIV 3.

5 RS-232接口模块................................................ XVI

3.6 本章小结...................................................... XVII

4 系统软件设计.................................................. XVIII 4.1 RS-232程序设计............................................... XVIII 4.2 Xtend的运行模式分析............................................ XIX 4.3 Xtend的命令模式控制............................................. XX 4.4 Xtend的通信模式控制............................................ XXI

4.5 本章小结...................................................... XXII

5 课题的主要研究工作及结论...................................... XXIII 附录一、系统原理图................................................ XXIV