1、 编号： 毕业设计(论文)说明书 题 目：短距无线寻呼系统设计 专 业： 计算机科学与技术 题目类型：题目类型： 理论研究 实验研究 工程设计 工程技术研究 软件开发 2008 年 6 月 15 日 摘 要 本文介绍了利用无线收发模块 SRWF-1100DB 实现与 PC 机之间的无线数据通 讯。呼叫器和接收器之间可实现一对多关系，接受灵敏度高。接收器通过 PC 机 可输出声音、文字，并指示出是哪个呼叫器寻呼。 短距无线寻呼系统的实现利用了 C51 单片机、单片机最小系统、Max232 电 压转换芯片，将 ttl 电平转换成可以和电脑串口匹配的电压、无线收发模块 SRWF-1100DB、按钮驱
2、动中断通过外部引角触发串口通讯发送讯号，当利用 Delphi 制作的串口通讯上位机接受到讯号之后显示出是哪个发射器传过来的信 号。 本文重点讨论了通信协议的制定和具体实现， 无线侧控系统的硬件及通信协 议的设计思路和实现方法， 实践证明该通信系统在环境比较恶劣的工业现场工作 可靠稳定，传输距离比较远。 关键词：最小系统；串口通讯；C51；无线收发 Abstract This article recommended the wireless communications between PC and Wireless transceiver Module SRWF-1100DB. Transmi
3、tter and receiver can implementation One-to-many relationships, accept with the high sensitivity. Receiver can output voice, text,which is also point out which transmitter are sending data by PC. Implementation the Short-range wireless Transmitter System use SCM, Minimum System for SCM, Max232 Chip
4、voltage conversion, Ttl level will be converted into computer serial port and match the voltage. Wireless transceiver Module SRWF-1100DB, button drive interrupted by external trigger serial communication with Kok sentting signals.When serial communication PC which made by Delphi received the signal
5、and show the single is send by which transmitter. This article focused on the Develop communication protocol and concrete realization. Wireless side of the control system communication protocol and hardware design ideas and methods to achieve. Practice has proved that the communication system in the
6、 industrial environment is relatively poor at the scene of reliable stability，transmission distance distant Keywords: Minimum System, Serial Communication, C51, Wireless transceiver 目 录 引言 1 1 系统设计 . 2 1.1 工作流程 2 2 硬件设计 . 3 2.1 芯片说明 3 2.1.1 MAX232 3 2.1.2 SRWF-1100DB 无线数传模块. 3 2.1.3 MCS-8051 芯片. 4 2.2 接收模块说明 5 2.2.1 电源显示模块 5 2.2.2 USB 供电模块. 6 2.2.3 无线接收模块 6 2.2.4 串口电平转换模块 7 2.3 发射模块说明 8 2.3.1 复位模块 8 2.3.2 无线发射模块 8 2.3.3 供电模块 9 2.3.4 晶振 10 2.3.5 开关发射模块 10 2.3.6 烧录程序模块 11 2.3.7
