摘 要



風能作為一種新興的可再生能源，其發(fā)展有著重要的戰(zhàn)略意義。風電場是人們利用風能最直接的場所，但是風場的建設卻是一個復雜的過程，尤其是在風場選址的時期，風場選址離不開氣象數(shù)據(jù)，需要對風場的氣象參數(shù)實時監(jiān)測，而風速是風場建設時的核心數(shù)據(jù)，為了能實時準確的獲得風速信息，本文設計了一個風速測量系統(tǒng)，系統(tǒng)硬件以C8051F020單片機為核心，采用EC9-1三杯式風速傳感器采集風速信息，利用單片機的兩個通用定時計數(shù)器, 對風速脈沖進行定時和計數(shù), 通過計算單位時間內(nèi)的脈沖數(shù)計算出風速。其次使用RS485 通信協(xié)議，將不同測量平臺的信息匯總，然后通過GPRS/GSM模塊將風速數(shù)據(jù)送往上位機進行處理和保存。



關鍵詞：風速測量；C8051F020單片機；RS-485通信；BENQ M23





 





 





 





 





 





 





 





 





 









Abstract



Wind energy as a new renewable energy has the important strategic significance in its development. Wind farm is the most convenient site where people can use wind energy directly. while its construction is a complex process, especially in the field of the wind farm site selection which can not do without meteorological data, the detection for the meteorological parameters in a real-time is necessary. In order to get the accurate information in a real time as the wind speed is the most needed data in the construction , the paper today show a design of a wind speed meter, with a C8051F020 MCU system hardware core and a EC9-1 cups-style wind sensor as to collect wind speed information . using two general-purpose microcontroller timing counter, the timing and speed pulse count ,you can calculate the number of pulses per unit time to achieve the wind speed. Second, the design of RS485 communication protocol is to sum the different platform of information in measurement , and then GPRS / GSM module will sent the wind data to the host computer for processing and preservation.



Key words: wind speed measurement; C8051F020 MCU; RS-485 communications; BENQ M23





 





 



目 錄





引 言 1



第一章 風電概述及課題目的和意義 2



1.1 風電的發(fā)展 2



1.1.1 我國風能利用概述 2



1.1.2 我國風電的發(fā)展 3



1.1.3 國外風電的發(fā)展 3



1.2 風電場選址要求 4



1.3 本課題的目的 4



第二章 風速測量儀的種類及特點 6



2.1 風杯風速儀 6



2.2 畢托管風速儀 6



2.3 熱線熱膜式風速儀 7



2.4 超聲波測風儀 7



2.5 激光多普勒測速儀 7



第三章 系統(tǒng)硬件設計 9



3.1 電源和電壓轉(zhuǎn)換電路 9



3.2 三杯式風速傳感器 10



3.3 C8051F020單片機 11



3.4 信號處理電路 14



3.5 串行通信模塊 15



3.6 無線數(shù)據(jù)傳輸模塊 17



3.6.1 M23模塊 17



3.6.2 SIM卡接口電路 19



第四章 系統(tǒng)總體硬件連接圖 21



結 論 22



參考文獻 23



致 謝 25