意大利杰佛倫稱重傳感器上海辦事處

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原理：

計量光(guang)(guang)柵(zha)(zha)是利用光(guang)(guang)柵(zha)(zha)的(de)莫(mo)爾條紋(wen)(wen)現(xian)象來(lai)測量位移的(de)。“莫(mo)爾”原(yuan)出于法(fa)文Moire，意思是水波紋(wen)(wen)。幾百(bai)年前法(fa)國絲綢(chou)工人(ren)發現(xian)，當兩(liang)層(ceng)薄絲綢(chou)疊在(zai)一(yi)起(qi)時，將產生水波紋(wen)(wen)狀花樣；如果(guo)薄綢(chou)子相(xiang)對運動，則花樣也(ye)跟著(zhu)移動，這(zhe)種(zhong)奇怪的(de)花紋(wen)(wen)就是莫(mo)爾條紋(wen)(wen)。一(yi)般(ban)來(lai)說，只要是有一(yi)定周期的(de)曲線(xian)簇重疊起(qi)來(lai)，便會(hui)產生莫(mo)爾條紋(wen)(wen)。計量光(guang)(guang)柵(zha)(zha)在(zai)實際應用上有透射(she)光(guang)(guang)柵(zha)(zha)和反(fan)射(she)光(guang)(guang)柵(zha)(zha)兩(liang)種(zhong)；按(an)其(qi)作用原(yuan)理又可分(fen)為輻射(she)光(guang)(guang)柵(zha)(zha)和相(xiang)位光(guang)(guang)柵(zha)(zha)；按(an)其(qi)用途可分(fen)為直(zhi)線(xian)光(guang)(guang)柵(zha)(zha)和圓光(guang)(guang)柵(zha)(zha)。下面以透射(she)光(guang)(guang)柵(zha)(zha)為例加以討論。

意大利杰佛倫稱重傳感器上海辦事處　

透射光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)尺上均勻地刻有平行(xing)的(de)(de)(de)(de)刻線(xian)(xian)即柵(zha)(zha)(zha)(zha)(zha)(zha)線(xian)(xian)，a為(wei)刻線(xian)(xian)寬(kuan)，b為(wei)兩(liang)刻線(xian)(xian)之間縫(feng)寬(kuan)，W=a+b稱(cheng)為(wei)光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)柵(zha)(zha)(zha)(zha)(zha)(zha)距(ju)。目(mu)前國(guo)內(nei)常用(yong)的(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)每毫米刻成10、25、50、100、250條(tiao)等線(xian)(xian)條(tiao)。光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)的(de)(de)(de)(de)橫向(xiang)莫爾條(tiao)紋測位(wei)(wei)移(yi)，需(xu)要兩(liang)塊光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)。一塊光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)稱(cheng)為(wei)主光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)，它的(de)(de)(de)(de)大小(xiao)與測量范(fan)圍相*；另一塊是很小(xiao)的(de)(de)(de)(de)一塊，稱(cheng)為(wei)指(zhi)示(shi)光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)。為(wei)了(le)測量位(wei)(wei)移(yi)，必(bi)須(xu)在(zai)主光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)側加光(guang)(guang)(guang)(guang)(guang)源，在(zai)指(zhi)示(shi)光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)側加光(guang)(guang)(guang)(guang)(guang)電(dian)接(jie)收元件。當主光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)和指(zhi)示(shi)光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)相對移(yi)動(dong)時，由于(yu)光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)的(de)(de)(de)(de)遮光(guang)(guang)(guang)(guang)(guang)作用(yong)而使莫爾條(tiao)紋移(yi)動(dong)，固定在(zai)指(zhi)示(shi)光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)側的(de)(de)(de)(de)光(guang)(guang)(guang)(guang)(guang)電(dian)元件，將光(guang)(guang)(guang)(guang)(guang)強變(bian)化轉換成電(dian)信(xin)號(hao)(hao)(hao)。由于(yu)光(guang)(guang)(guang)(guang)(guang)源的(de)(de)(de)(de)大小(xiao)有限及光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)的(de)(de)(de)(de)衍射作用(yong)，使得(de)信(xin)號(hao)(hao)(hao)為(wei)脈動(dong)信(xin)號(hao)(hao)(hao)。如(ru)圖(tu) 1，此信(xin)號(hao)(hao)(hao)是一直(zhi)流(liu)信(xin)號(hao)(hao)(hao)和近視正弦的(de)(de)(de)(de)周期信(xin)號(hao)(hao)(hao)的(de)(de)(de)(de)疊加，周期信(xin)號(hao)(hao)(hao)是位(wei)(wei)移(yi)x的(de)(de)(de)(de)函數。每當x變(bian)化一個(ge)光(guang)(guang)(guang)(guang)(guang)柵(zha)(zha)(zha)(zha)(zha)(zha)柵(zha)(zha)(zha)(zha)(zha)(zha)距(ju)W，信(xin)號(hao)(hao)(hao)就變(bian)化一個(ge)周期，信(xin)號(hao)(hao)(hao)由b點(dian)變(bian)化到b’點(dian)。由于(yu)bb’=W，故b’點(dian)的(de)(de)(de)(de)狀(zhuang)態與b點(dian)狀(zhuang)態*一樣(yang)，只是在(zai)相位(wei)(wei)上增加了(le)2π。

杰弗倫GEFRAN TR稱(cheng)重傳感(gan)器 
TR-N1C-C35-1 TR-N1C-C40-1 
TR-N1C-P30-1 TR-N1C-C35-2 TR-N1C-C40-2 TR-N1C-P30-2 
TR-N1C-C35-3 TR-N1C-C40-3 TR-N1C-P30-3 TR-N2C-C35-1 
TR-N2C-C40-1 TR-N2C-P30-1 TR-N2C-C35-2 TR-N2C-C40-2 
TR-N2C-P30-2 TR-N2C-C35-3 TR-N2C-C40-3 TR-N2C-P30-3 
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TR-N3.5C-C40-2 TR-N3.5C-P30-2 TR-N3.5C-C35-3 TR-N3.5C-C40-3 
TR-N3.5C-P30-3 TR-N5C-C35-1 TR-N5C-C40-1 TR-N5C-P30-1 
TR-N5C-C35-2 TR-N5C-C40-2 TR-N5C-P30-2 TR-N5C-C35-3 
TR-N5C-C40-3 TR-N5C-P30-3 TR-N7.5C-C35-1 TR-N7.5C-C40-1 
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TR-N7.5C-C35-3 TR-N7.5C-C40-3 TR-N7.5C-P30-3 TR-N1M-C35-1 
TR-N1M-C40-1 TR-N1M-P30-1 TR-N1M-C35-2 TR-N1M-C40-2 
TR-N1M-P30-2 TR-N1M-C35-3 TR-N1M-C40-3 TR-N1M-P30-3