基于單片機的載波通信系統(tǒng)設計

測控論文編號:CK120   論文字數:15638,頁數:80

目 錄
摘要……………………………………………………………………………...………………..I
1 前言……………………………………………………………………………………………1
2 總體設計方案………………………………………………………………………………..3
2.1  系統(tǒng)硬件總框圖………………………………………………………………….…….3
2.2  系統(tǒng)總體軟件流程……………………………………………………………. . .…….4
3  微控制器模塊…………………………………………………………...................5
 3.1  微控制器簡介………………………………………………………………………….5
  3.1.1  STC12C5A60S2芯片簡介……………………………………………………..5
  3.1.2  雙串口應用……………………………………………………………………..7
 3.2  單片機各個模塊電路……………………………………………………………….…9
4  載波通信簡介…………………………………………………………..…………………12
 4.1  電力線通信概況………………………………………………………………………12
 4.2  ST7540載波芯片應用………………………………………………………………..14
  4.2.1  ST7540芯片簡介……………………………………………………………...14
  4.2.2  ST7540載波頻率和傳輸速率………………………………………………...14
  4.2.3  ST7540內部控制寄存器讀寫…………………………………………….......15
  4.2.4  ST7540數據的發(fā)送和接收…………………………………………………...18
5  ST7540與電力線接口電路………………………………………………. . .………….20
 5.1  發(fā)送有源濾波電路……………………………………………………………………20
 5.2  接收無源濾波電路……………………………………………………………………22
 5.3  ST7540與主控制器的數據通信……………………………………………………...25
6  系統(tǒng)的調試………………………………………………………………………………....26
 6.1  系統(tǒng)軟硬件調試過程………………………………………………………………….26
 6.2  實際結果……………………………………………………………………………….26
7  總結………………………………………………………………………………………….29
致謝…………………………………………………………………………………………........30
參考文獻………………………………………………………..……………………………….31
附錄…………………………………………………………………………………………........32

摘  要
 這篇文章介紹了基于單片機的電力線載波通信系統(tǒng)的設計。軟硬件設計中采用的微控制器是STC雙串口單片機，電力載波芯片是ST7540。本次設計中通過單片機可正確讀寫ST7540的控制寄存器，通過控制ST7540的內部控制寄存器可控制其載波頻率、波特率、工作模式、（同步或異步）等。系統(tǒng)還添加了LCD顯示電路、按鍵電路、蜂鳴器檢測電路等，使其功能更加完善，經過磁環(huán)耦合，通過電力線進行數據傳輸，可以實現兩地數據的通信，本系統(tǒng)設計合理，簡單，安全可靠。

關鍵詞：電力線，載波通信，ST7540，載波通信

Abstract
 This article describes a design about a system of power line carrier communication, The hardware and software design of microcontroller is used STC dual-port MCU. Power line carrier chip is ST7540. In this design MCU can be properly read and write control register of ST7540. We can control the carrier frequency, baud rate, mode, (synchronous or asynchronous) through controlling the internal control registers of ST7540.System also adds a LCD display circuit, the key circuit, buzzer detection circuit to make it’s function more perfect .After ceramic ring coupling, Data transmission can be achieved through the power line, data can be communication between different place .the system is reasonable, simple, safe and reliable.
 
Keywords：power lines , carrier communication, ST7540, carrier communication