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了解一下風速風向儀的工作原理吧</div> <div class="about_con"> <h1 class="newstit">了解一下風速風向儀的工作原理吧</h1> <div class="newstime"> <span class="skim"><em>瀏覽次數：</em>1084</span><span class="skimtim"><em>發布日期：</em>2023-05-24 </span> </div> <div>　　<strong><a href="http://www.haitunphoto.cn/SonList-269625.html" target="_blank">風速風向儀</a>是一種用于測量風速和風向的儀器，其工作原理基于風力對其測量元件的影響。</strong>一般來說，風速風向儀由風速傳感器、風向傳感器、變送器和顯示器等組成。<br /> </div><div>　　下面讓我們來了解一下風速風向儀的工作原理吧<br /> </div><div>　　風速傳感器通常采用熱膜或冷膜傳感技術，其中熱膜傳感器是應用較為廣泛的一種。它通過將一個細絲電阻加熱到一定溫度，使得其周圍的空氣受熱后上升，從而形成一個微小的對流環境。<br /> </div><div>　　當風通過這個對流環境時，它將帶走部分熱量，導致溫度降低，從而使電阻發生變化。這個變化經過放大和處理之后，就可以得到相應的風速值。<br /> </div><div>　　風向傳感器則通常采用機械式或光電式傳感技術。機械式風向傳感器通過安裝在支架上的風向標來測量風向，當風吹過風向標時，它會轉動到指向風的方向。<br /> </div><div>　　同時風向標還會連接到一個旋轉電位器上，通過讀取旋轉電位器的輸出信號可以得到風向的數值。<br /> </div><div>　　光電式風向傳感器則是通過使用多個光敏元件來檢測進入傳感器的光線，進而確定風向。具體來說，這些光敏元件會隨著風向的變化而受到不同程度的遮擋，從而產生不同的輸出信號。<br /> </div><div>　　無論是風速傳感器還是風向傳感器，它們都需要將測量到的信號通過變送器進行放大、濾波和處理，以便于接入其他設備或者顯示器進行讀取和分析。<br /> 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