繼電(dian)(dian)器主要用于(yu)控制與保護電(dian)(dian)路作信號轉換用。它具有(you)輸入電(dian)(dian)路（又稱感應元(yuan)件）和輸出(chu)電(dian)(dian)路（又稱執行(xing)元(yuan)件）。當感應元(yuan)件中的輸入量（如(ru)電(dian)(dian)流、電(dian)(dian)壓(ya)、溫度(du)、壓(ya)力(li)等）變化
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一、低壓電(dian)器的(de)基本知識電(dian)器：電(dian)能(neng)的(de)生產、輸送、分(fen)配(pei)與應用起著(zhu)控制、調節(jie)、檢(jian)測(ce)和保護的(de)作用。電(dian)器：根(gen)據外界的(de)信(xin)號和要(yao)求，自動或手動接通或斷(duan)開(kai)電(dian)路，斷(duan)續(xu)或連續(xu)
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什么是過(guo)(guo)載(zai)(zai)(zai)：每個電氣(qi)設備(bei)都有它的(de)額定功率，當超過(guo)(guo)額定功率是就叫(jiao)做(zuo)過(guo)(guo)載(zai)(zai)(zai)，對這種狀態的(de)保護就叫(jiao)做(zuo)過(guo)(guo)載(zai)(zai)(zai)保護對于(yu)防止電氣(qi)設備(bei)內部發生短路的(de)保護就叫(jiao)做(zuo)短路保護、什么
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步驟一 用220V電源加到(dao)電磁閥(fa)上(shang)的兩個插片上(shang)，反復通斷(duan)電流數次，如(ru)電磁閥(fa)有換向聲(sheng)則證明(ming)電磁閥(fa)電氣上(shang)無故障（注意(yi)：因線(xian)圈(quan)內帶(dai)有PTC熱敏電阻故通電時間(jian)不能(neng)超過20秒
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電(dian)磁閥線(xian)圈的額定電(dian)壓(ya)有(you)DC12V、DC24V、AC24V(50/60Hz)、AC110V(50/60Hz)、AC220V(50/60Hz)、AC380V(50/60Hz)。一般在電(dian)氣設(she)計時要(yao)么采用AC220V(不需(xu)加裝開關電(dian)源
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1、常(chang)用(yong)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)，適(shi)用(yong)范(fan)圍(wei)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)分(fen)為(wei)硬母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)和軟母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)。硬母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)按其(qi)形(xing)狀不同(tong)有可分(fen)為(wei)：矩(ju)形(xing)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)、管型母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)、槽(cao)型母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)、菱(ling)形(xing)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)等多種(zhong)。矩(ju)形(xing)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)是最常(chang)用(yong)的母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)，也(ye)成(cheng)母(mu)(mu)(mu)(mu)線(xian)(xian)(xian)(xian)(xian)排
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當(dang)管(guan)配(pei)線(xian)(xian)分叉時(shi)(shi)或者不能達(da)到有(you)長(chang)度(du)，必(bi)(bi)須設(she)置(zhi)接(jie)線(xian)(xian)盒。1. 接(jie)線(xian)(xian)盒是電氣配(pei)管(guan)線(xian)(xian)路中管(guan)線(xian)(xian)長(chang)度(du). 管(guan)線(xian)(xian)彎頭(tou)超過規范規定的距離(li)和彎頭(tou)個數(shu)時(shi)(shi)以及管(guan)路有(you)分支時(shi)(shi)，所(suo)必(bi)(bi)須設(she)置(zhi)
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機(ji)器視覺是計算機(ji)視覺的(de)(de)一(yi)個分支(zhi)，工業自動化(hua)領域中(zhong)的(de)(de)視覺控(kong)制(zhi)或視覺應用(yong)，主要指的(de)(de)是通過(guo)前端(duan)光(guang)學攝(she)像頭，從采集到(dao)的(de)(de)數(shu)字(zi)化(hua)圖像中(zhong)提取相關(guan)信息，進行分析處(chu)理之后，用(yong)
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??機器視覺系統(tong)由眾多部件(jian)組成，其中包括相機、圖像采集卡、照明單元、光學元件(jian)與鏡(jing)頭、處理器、軟件(jian)及顯示設備等。簡單的機器視覺系統(tong)可以識別2D或3D條形(xing)碼，更(geng)復
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淺槽重介分選機（以(yi)下(xia)簡稱(cheng)淺槽）用(yong)于大型選煤(mei)(mei)廠的塊(kuai)煤(mei)(mei)排矸，也可以(yi)用(yong)于井(jing)下(xia)排矸，是煤(mei)(mei)礦地面(mian)選煤(mei)(mei)廠和井(jing)下(xia)選煤(mei)(mei)廠主要分選設備之(zhi)一。近(jin)年來，不(bu)僅在我國動力煤(mei)(mei)選煤(mei)(mei)廠得到
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