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一、為什么干手器能自動開關

自(zi)(zi)動開關是(shi)指人(ren)體紅外智能感(gan)(gan)應(ying)(ying)(ying)開關，是(shi)一種當有人(ren)從紅外感(gan)(gan)應(ying)(ying)(ying)探(tan)測區域經(jing)過而(er)自(zi)(zi)動啟動的(de)(de)開關。那么干手(shou)(shou)器(qi)原理是(shi)什么呢？干手(shou)(shou)器(qi)能自(zi)(zi)動開關是(shi)因為在(zai)干手(shou)(shou)器(qi)內部，安裝了變(bian)(bian)容式自(zi)(zi)動感(gan)(gan)應(ying)(ying)(ying)電(dian)(dian)(dian)(dian)(dian)路(lu)，由它(ta)控制著一個電(dian)(dian)(dian)(dian)(dian)橋平(ping)衡電(dian)(dian)(dian)(dian)(dian)路(lu)。電(dian)(dian)(dian)(dian)(dian)橋平(ping)衡電(dian)(dian)(dian)(dian)(dian)路(lu)由四(si)部分(fen)組(zu)成(cheng)，稱為四(si)個橋臂。變(bian)(bian)容式自(zi)(zi)動感(gan)(gan)應(ying)(ying)(ying)電(dian)(dian)(dian)(dian)(dian)路(lu)組(zu)成(cheng)了其中的(de)(de)一個橋臂。它(ta)的(de)(de)感(gan)(gan)應(ying)(ying)(ying)部分(fen)，安裝在(zai)干手(shou)(shou)器(qi)的(de)(de)出(chu)風口處(chu)。當濕手(shou)(shou)在(zai)風口下(xia)出(chu)現(xian)時(shi)，因為人(ren)體是(shi)導體，也能形(xing)成(cheng)電(dian)(dian)(dian)(dian)(dian)容，于是(shi)，使感(gan)(gan)應(ying)(ying)(ying)部分(fen)的(de)(de)電(dian)(dian)(dian)(dian)(dian)容量發生變(bian)(bian)化(hua)，立即使電(dian)(dian)(dian)(dian)(dian)橋電(dian)(dian)(dian)(dian)(dian)路(lu)中的(de)(de)四(si)個橋臂的(de)(de)量值，從平(ping)衡轉向不(bu)平(ping)衡。原來在(zai)平(ping)衡狀態下(xia)，橋臂中能互相抵消(xiao)的(de)(de)電(dian)(dian)(dian)(dian)(dian)流，不(bu)再(zai)抵消(xiao)，出(chu)現(xian)了一股新的(de)(de)電(dian)(dian)(dian)(dian)(dian)流。它(ta)能使吸(xi)鐵繼電(dian)(dian)(dian)(dian)(dian)器(qi)動作，接通(tong)風扇和(he)電(dian)(dian)(dian)(dian)(dian)熱(re)器(qi)上的(de)(de)電(dian)(dian)(dian)(dian)(dian)源，就會(hui)有風吹出(chu)來。

二、干手器安裝高度

干(gan)手(shou)(shou)器的(de)安裝高度(du)一般是在1.2m左(zuo)右，離洗(xi)手(shou)(shou)臺30-40cm遠。如果安裝在家(jia)中就要(yao)考(kao)慮使(shi)用(yong)(yong)人群，一般家(jia)用(yong)(yong)型的(de)掛式感受(shou)求可以根據家(jia)人的(de)平均(jun)身高來安裝，如果有小孩可以選擇安裝落地式向上的(de)干(gan)手(shou)(shou)器。

三、干手器有輻射嗎

一般通(tong)電(dian)的(de)東西都會有電(dian)離輻射(she)(she)的(de)，只是(shi)輻射(she)(she)大小(xiao)的(de)問(wen)題，干手器也是(shi)有輻射(she)(she)的(de)，不(bu)(bu)過不(bu)(bu)用擔心，畢(bi)竟它的(de)體量并(bing)不(bu)(bu)大，并(bing)且你(ni)只是(shi)使用不(bu)(bu)到半分鐘，基本不(bu)(bu)會被輻射(she)(she)所影響。

四、如何挑選干手器

挑選干手器主要根據自己的需要和環境等情況來決定是選以風為主熱量為輔的風量型的干手器，還是以熱量為主的熱風型干手器。此外，還需要考慮到干手器的外殼材質、重量、顏色、啟動原理、安裝方式、工作噪音、運行功率、干手時風溫等參數。購買的干手器品牌要(yao)有質量保(bao)障(zhang)，以用(yong)起(qi)來(lai)舒適為宜。