基于arm的交流電壓變送器的設計

1、目 錄摘要....................................................................................................................................................1Abstract.........................................................

2、.....................................................................................11 概述.................................................................................................................................

3、.............21.1 項目背景...........................................................................................................................21.1.1 變送器...............................................................

4、.....................................................21.1.2 電壓變送器............................................................................................................21.1.3 嵌入式系統.................................

5、...........................................................................21.2 課題研究的目的與意義...................................................................................................31.3 課題的主要內容.................

6、..............................................................................................32 系統整體方案....................................................................................................................

7、..........32.1 交流電壓變送器的一般構成...........................................................................................32.2 嵌入式平臺設計........................................................................................

8、.......................33 交流電壓變送器硬件設計..........................................................................................................43.1 降壓電路設計................................................................

9、...................................................43.2 精密整流電路設計...........................................................................................................53.2.1 常用整流電路..................................

10、......................................................................53.2.2 精密整流電路........................................................................................................63.2.3 濾波電路設計..................

11、......................................................................................73.3 V / I 轉化電路設計 ..........................................................................................................93.4 單片機

12、及 AD 接口電路設計.........................................................................................113.4.1 晶振及復位電路..................................................................................................113.4.

13、2 ADC0808 電路接口 ............................................................................................113.4.3 LED 數碼管顯示電路.........................................................................................123

14、.4.4 主控制器及其外圍電路......................................................................................133.5 電源電路設計.........................................................................................................

15、........134 軟件設計....................................................................................................................................134.1 軟件開發(fā)環(huán)境..........................................................

16、.......................................................13基于 ARM 的交流電壓變送器設計摘要：針對電壓監(jiān)控在電力系統的廣泛應用，設計了一個供監(jiān)視使用的電壓變送器。采用精密整流電路進行電壓整流，再經過濾波得到與電壓源成線性比例的直流電壓，并設計了 V/I 轉換電路。以 AT89C52 單片機作為微控制器，結合 ADC0808 芯片以及 LED 數碼管，實現電壓顯示。在 Keil

17、uVision2 的開發(fā)環(huán)境下，設計了采樣、顯示以及數據處理等程序，實現了電壓變送器功能。在 Proteus 下進行仿真調試，達到預期結果。關鍵詞：電壓變送器；嵌入式系統；單片機The Design of AC Voltage Transmitter Based on ARMAbstract：In connection with the widely use of voltage monitoring in power systems,

18、 an AC voltage transmitter was designed. The design transformed an AC voltage by taking use of the precision rectifier and filtering circuit, and a DC voltage was obtained. A V/I transforming circuit was also designed. T

19、he DC voltage was sampled by the ADC0808 and displayed by the LED which was based on the control of the AT89C52 MCU. In the environment of Keil uVision2, the sampling, displaying, data processing and other codes were don

20、e. And the function of the voltage transmitter was achieved. The simulation and debugging were carried out by the software Proteus and the expect effects had been arrived.Key words：voltage transmitter; embedded system; s