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為什么工控主板的價格比商用主板高?
2017-05-25 13:45:35 新聞來源：草莓視頻污app:深圳市澤創偉業科技有限公司
為什么工控主(zhu)板(ban)的價格比(bi)商(shang)用(yong)主(zhu)板(ban)高?相信很多(duo)用(yong)戶(hu)朋(peng)友都有這個(ge)疑問，下面澤創偉業小編就(jiu)來給大家分析下。
一、保護功能
商(shang)用(yong)主(zhu)板沒(mei)有提供(gong)的任何的保護功能(neng);
工控主板通過特殊(shu)設計，在遇到死機等(deng)異常(chang)情況，可以實現看門狗自動重(zhong)新啟動、防(fang)浪涌沖(chong)擊等(deng)功能，全(quan)力的(de)保證系(xi)統在惡劣環境的(de)高(gao)穩定(ding)性的(de)要求。
二、工作溫度與散熱方式
商用主板(ban)基本只能在5℃~38℃之間的環(huan)境溫度(du)中(zhong)使用，對機構的散熱(re)要求低(di)，講(jiang)究外觀夠炫夠酷。
工(gong)控(kong)(kong)主板(ban)可以在-20℃~60℃之間的環境中(zhong)穩定、無故(gu)障的工(gong)作，甚至某些工(gong)業主板(ban)采(cai)用特(te)殊(shu)的寬(kuan)溫(wen)設計(ji)(ji)，溫(wen)度(du)范(fan)圍可達-20度(du)~70度(du)。這(zhe)對機構(gou)的散(san)熱(re)方案(an)，散(san)熱(re)效率都是(shi)一個嚴峻的考驗。在工(gong)控(kong)(kong)主板(ban)機構(gou)的散(san)熱(re)設計(ji)(ji)上，必須使用的特(te)殊(shu)散(san)熱(re)設計(ji)(ji)，甚至還采(cai)用全鋁制的機構(gou)外殼，而且對CPU、南(nan)北橋和(he)硬盤(pan)等(deng)發熱(re)大戶，進行特(te)殊(shu)處理，保(bao)證工(gong)控(kong)(kong)主板(ban)和(he)整機的正(zheng)常運行。
很(hen)(hen)多工(gong)控機(ji)(ji)由于在惡劣的(de)(de)應(ying)(ying)用環境下(例如潮(chao)濕、振動、多塵、輻(fu)射、高(gao)溫(wen)等等應(ying)(ying)用環境)使用，空氣中的(de)(de)塵埃(ai)和(he)鹽分，都會對(dui)主板(ban)造成腐蝕，影響主板(ban)的(de)(de)正常使用，因此很(hen)(hen)多工(gong)控機(ji)(ji)有(you)必要采(cai)用無風扇(shan)的(de)(de)機(ji)(ji)箱結構(gou)，防止惡劣環境對(dui)系統造成傷害(hai)。但是(shi)全密封無風扇(shan)的(de)(de)結構(gou)，因為熱(re)(re)源的(de)(de)互(hu)相干擾(rao)，對(dui)主板(ban)的(de)(de)性能和(he)穩定性的(de)(de)要求比較高(gao)，對(dui)機(ji)(ji)構(gou)的(de)(de)散(san)(san)熱(re)(re)方(fang)式和(he)散(san)(san)熱(re)(re)效能的(de)(de)要求很(hen)(hen)高(gao)，務必要將積(ji)熱(re)(re)有(you)效散(san)(san)發出去。
三、使用環境
工控主板常在惡劣環境下工作(壽命期內永久開機、氣候惡劣、潮濕、振動、多塵、輻射、高溫等等)，而這些環境下是商用主板無法勝任，當今商業主板大部分只能運行在安定的環境下(工作時間短、室內、常溫等等)。
四、主板元器件的用料與設計：
商用主板：
商(shang)用(yong)(yong)主板由(you)于其更新換代的(de)(de)(de)(de)速度(du)比較(jiao)快，且對產品(pin)的(de)(de)(de)(de)穩(wen)定性及使用(yong)(yong)環境的(de)(de)(de)(de)要(yao)求(qiu)比較(jiao)低，故此追求(qiu)的(de)(de)(de)(de)是(shi)產品(pin)的(de)(de)(de)(de)時效性，以及本(ben)身產品(pin)的(de)(de)(de)(de)市場定位(wei)，對元器件(jian)選擇要(yao)求(qiu)上一(yi)般只需滿足(zu)系統運(yun)行2到3年(nian)的(de)(de)(de)(de)使用(yong)(yong)壽命即可(3年(nian)之后大部分已經更新換代了(le))，元器件(jian)的(de)(de)(de)(de)用(yong)(yong)料上使用(yong)(yong)普通(tong)級別的(de)(de)(de)(de)就可以了(le)。例如電(dian)容，商(shang)用(yong)(yong)主板都是(shi)大量使用(yong)(yong)普通(tong)的(de)(de)(de)(de)電(dian)解電(dian)容，一(yi)是(shi)出(chu)于商(shang)用(yong)(yong)市場產品(pin)的(de)(de)(de)(de)使用(yong)(yong)考慮，二(er)是(shi)為降低主板的(de)(de)(de)(de)成本(ben)考慮。
工控主板(ban)：
1)工(gong)控主板的元器件
工控主(zhu)板(ban)選(xuan)料會(hui)選(xuan)用(yong)經(jing)過長時間，高(gao)(gao)要求(qiu)驗證元器(qi)(qi)件，用(yong)以保證產品(pin)在(zai)惡(e)劣條(tiao)件下(xia)高(gao)(gao)可靠性要求(qiu)。例(li)如工控主(zhu)板(ban)的(de)元器(qi)(qi)件需要適應(ying)寬溫(wen)(wen)環境(jing)(-20℃~60℃)，如固態電(dian)容器(qi)(qi)，保證在(zai)惡(e)劣環境(jing)下(xia)(壽命(ming)期內永久開機、氣候(hou)惡(e)劣、潮(chao)濕、振動、多(duo)塵(chen)、輻(fu)射、高(gao)(gao)溫(wen)(wen)等(deng)等(deng))正常(chang)工作;主(zhu)板(ban)元器(qi)(qi)件需要耐高(gao)(gao)溫(wen)(wen)、抗潮(chao)濕等(deng)等(deng)。
2)工控(kong)主(zhu)板的電容
工(gong)控(kong)(kong)主(zhu)(zhu)板(ban)(ban)(ban)采(cai)用(yong)的(de)是高(gao)質量的(de)貼片式的(de)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)、鉭(tan)、陶(tao)瓷(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，即(ji)使(shi)使(shi)用(yong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，對(dui)其品質、性能(neng)及壽(shou)命(ming)要求也(ye)遠高(gao)于商用(yong)產(chan)品，現在(zai)的(de)工(gong)控(kong)(kong)主(zhu)(zhu)板(ban)(ban)(ban)都(dou)基本(ben)(ben)上(shang)采(cai)用(yong)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，特別中高(gao)端(duan)的(de)工(gong)控(kong)(kong)主(zhu)(zhu)板(ban)(ban)(ban)。商用(yong)主(zhu)(zhu)板(ban)(ban)(ban)基本(ben)(ben)都(dou)是大量采(cai)用(yong)針腳式的(de)大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，因(yin)為(wei)大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)成本(ben)(ben)低、容(rong)(rong)(rong)(rong)值大一(yi)個可以(yi)頂多個貼片或坦電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)。從(cong)性質來說，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)穩定(ding)性不(bu)及鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)、陶(tao)瓷(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)高(gao)，壽(shou)命(ming)不(bu)及它們長，耐(nai)高(gao)溫程(cheng)度不(bu)及它們好(hao)。貼片式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)比(bi)針腳式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)更加(jia)穩定(ding)。從(cong)價格上(shang)，鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)比(bi)普(pu)通的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)要貴，且由(you)于鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)量較小(xiao)，使(shi)用(yong)在(zai)主(zhu)(zhu)板(ban)(ban)(ban)上(shang)時(shi)，需要使(shi)用(yong)更多數量的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，單單鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)成本(ben)(ben)就(jiu)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)幾十(shi)倍，這也(ye)是導致工(gong)控(kong)(kong)主(zhu)(zhu)板(ban)(ban)(ban)比(bi)商用(yong)主(zhu)(zhu)板(ban)(ban)(ban)成本(ben)(ben)價格高(gao)的(de)原因(yin)之一(yi)。隨著國產(chan)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)廠家越來越多，固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)的(de)價格的(de)下(xia)降，現在(zai)的(de)高(gao)檔次的(de)商用(yong)主(zhu)(zhu)板(ban)(ban)(ban)都(dou)在(zai)使(shi)用(yong)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)。
3)工控(kong)主(zhu)板的PCB
商用(yong)主(zhu)板(ban)(ban)(ban)采用(yong)的是(shi)4層(ceng)(ceng)PCB設(she)計(ji)(ji)，一般的PCB線路板(ban)(ban)(ban)分有四(si)層(ceng)(ceng)，最(zui)上(shang)和最(zui)下的兩(liang)層(ceng)(ceng)是(shi)信號層(ceng)(ceng)，中間兩(liang)層(ceng)(ceng)是(shi)接地層(ceng)(ceng)和電源層(ceng)(ceng)，將接地和電源層(ceng)(ceng)放在中間。工業主(zhu)板(ban)(ban)(ban)采用(yong)的是(shi)6層(ceng)(ceng)以上(shang)PCB線路板(ban)(ban)(ban)設(she)計(ji)(ji)，其設(she)計(ji)(ji)是(shi)為了加強主(zhu)板(ban)(ban)(ban)的抗電磁干擾、電磁兼(jian)容能力(li)，增強主(zhu)板(ban)(ban)(ban)的穩定性等等。
4)工控主板的壽命(ming)
與商用(yong)(yong)主(zhu)(zhu)板2到3年使用(yong)(yong)壽(shou)命(ming)(ming)不同，大多數的工(gong)控(kong)主(zhu)(zhu)板壽(shou)命(ming)(ming)要求在3年以上，部分高品質的工(gong)控(kong)主(zhu)(zhu)板，使用(yong)(yong)壽(shou)命(ming)(ming)甚至達(da)到5—7年。
一、保護功能
商(shang)用(yong)主(zhu)板沒(mei)有提供(gong)的任何的保護功能(neng);
工控主板通過特殊(shu)設計，在遇到死機等(deng)異常(chang)情況，可以實現看門狗自動重(zhong)新啟動、防(fang)浪涌沖(chong)擊等(deng)功能，全(quan)力的(de)保證系(xi)統在惡劣環境的(de)高(gao)穩定(ding)性的(de)要求。
二、工作溫度與散熱方式
商用主板(ban)基本只能在5℃~38℃之間的環(huan)境溫度(du)中(zhong)使用，對機構的散熱(re)要求低(di)，講(jiang)究外觀夠炫夠酷。
工(gong)控(kong)(kong)主板(ban)可以在-20℃~60℃之間的環境中(zhong)穩定、無故(gu)障的工(gong)作，甚至某些工(gong)業主板(ban)采(cai)用特(te)殊(shu)的寬(kuan)溫(wen)設計(ji)(ji)，溫(wen)度(du)范(fan)圍可達-20度(du)~70度(du)。這(zhe)對機構(gou)的散(san)熱(re)方案(an)，散(san)熱(re)效率都是(shi)一個嚴峻的考驗。在工(gong)控(kong)(kong)主板(ban)機構(gou)的散(san)熱(re)設計(ji)(ji)上，必須使用的特(te)殊(shu)散(san)熱(re)設計(ji)(ji)，甚至還采(cai)用全鋁制的機構(gou)外殼，而且對CPU、南(nan)北橋和(he)硬盤(pan)等(deng)發熱(re)大戶，進行特(te)殊(shu)處理，保(bao)證工(gong)控(kong)(kong)主板(ban)和(he)整機的正(zheng)常運行。
很(hen)(hen)多工(gong)控機(ji)(ji)由于在惡劣的(de)(de)應(ying)(ying)用環境下(例如潮(chao)濕、振動、多塵、輻(fu)射、高(gao)溫(wen)等等應(ying)(ying)用環境)使用，空氣中的(de)(de)塵埃(ai)和(he)鹽分，都會對(dui)主板(ban)造成腐蝕，影響主板(ban)的(de)(de)正常使用，因此很(hen)(hen)多工(gong)控機(ji)(ji)有(you)必要采(cai)用無風扇(shan)的(de)(de)機(ji)(ji)箱結構(gou)，防止惡劣環境對(dui)系統造成傷害(hai)。但是(shi)全密封無風扇(shan)的(de)(de)結構(gou)，因為熱(re)(re)源的(de)(de)互(hu)相干擾(rao)，對(dui)主板(ban)的(de)(de)性能和(he)穩定性的(de)(de)要求比較高(gao)，對(dui)機(ji)(ji)構(gou)的(de)(de)散(san)(san)熱(re)(re)方(fang)式和(he)散(san)(san)熱(re)(re)效能的(de)(de)要求很(hen)(hen)高(gao)，務必要將積(ji)熱(re)(re)有(you)效散(san)(san)發出去。
三、使用環境
工控主板常在惡劣環境下工作(壽命期內永久開機、氣候惡劣、潮濕、振動、多塵、輻射、高溫等等)，而這些環境下是商用主板無法勝任，當今商業主板大部分只能運行在安定的環境下(工作時間短、室內、常溫等等)。
四、主板元器件的用料與設計：
商用主板：
商(shang)用(yong)(yong)主板由(you)于其更新換代的(de)(de)(de)(de)速度(du)比較(jiao)快，且對產品(pin)的(de)(de)(de)(de)穩(wen)定性及使用(yong)(yong)環境的(de)(de)(de)(de)要(yao)求(qiu)比較(jiao)低，故此追求(qiu)的(de)(de)(de)(de)是(shi)產品(pin)的(de)(de)(de)(de)時效性，以及本(ben)身產品(pin)的(de)(de)(de)(de)市場定位(wei)，對元器件(jian)選擇要(yao)求(qiu)上一(yi)般只需滿足(zu)系統運(yun)行2到3年(nian)的(de)(de)(de)(de)使用(yong)(yong)壽命即可(3年(nian)之后大部分已經更新換代了(le))，元器件(jian)的(de)(de)(de)(de)用(yong)(yong)料上使用(yong)(yong)普通(tong)級別的(de)(de)(de)(de)就可以了(le)。例如電(dian)容，商(shang)用(yong)(yong)主板都是(shi)大量使用(yong)(yong)普通(tong)的(de)(de)(de)(de)電(dian)解電(dian)容，一(yi)是(shi)出(chu)于商(shang)用(yong)(yong)市場產品(pin)的(de)(de)(de)(de)使用(yong)(yong)考慮，二(er)是(shi)為降低主板的(de)(de)(de)(de)成本(ben)考慮。
工控主板(ban)：
1)工(gong)控主板的元器件
工控主(zhu)板(ban)選(xuan)料會(hui)選(xuan)用(yong)經(jing)過長時間，高(gao)(gao)要求(qiu)驗證元器(qi)(qi)件，用(yong)以保證產品(pin)在(zai)惡(e)劣條(tiao)件下(xia)高(gao)(gao)可靠性要求(qiu)。例(li)如工控主(zhu)板(ban)的(de)元器(qi)(qi)件需要適應(ying)寬溫(wen)(wen)環境(jing)(-20℃~60℃)，如固態電(dian)容器(qi)(qi)，保證在(zai)惡(e)劣環境(jing)下(xia)(壽命(ming)期內永久開機、氣候(hou)惡(e)劣、潮(chao)濕、振動、多(duo)塵(chen)、輻(fu)射、高(gao)(gao)溫(wen)(wen)等(deng)等(deng))正常(chang)工作;主(zhu)板(ban)元器(qi)(qi)件需要耐高(gao)(gao)溫(wen)(wen)、抗潮(chao)濕等(deng)等(deng)。
2)工控(kong)主(zhu)板的電容
工(gong)控(kong)(kong)主(zhu)(zhu)板(ban)(ban)(ban)采(cai)用(yong)的(de)是高(gao)質量的(de)貼片式的(de)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)、鉭(tan)、陶(tao)瓷(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，即(ji)使(shi)使(shi)用(yong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，對(dui)其品質、性能(neng)及壽(shou)命(ming)要求也(ye)遠高(gao)于商用(yong)產(chan)品，現在(zai)的(de)工(gong)控(kong)(kong)主(zhu)(zhu)板(ban)(ban)(ban)都(dou)基本(ben)(ben)上(shang)采(cai)用(yong)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，特別中高(gao)端(duan)的(de)工(gong)控(kong)(kong)主(zhu)(zhu)板(ban)(ban)(ban)。商用(yong)主(zhu)(zhu)板(ban)(ban)(ban)基本(ben)(ben)都(dou)是大量采(cai)用(yong)針腳式的(de)大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，因(yin)為(wei)大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)成本(ben)(ben)低、容(rong)(rong)(rong)(rong)值大一(yi)個可以(yi)頂多個貼片或坦電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)。從(cong)性質來說，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)穩定(ding)性不(bu)及鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)、陶(tao)瓷(ci)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)高(gao)，壽(shou)命(ming)不(bu)及它們長，耐(nai)高(gao)溫程(cheng)度不(bu)及它們好(hao)。貼片式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)比(bi)針腳式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)更加(jia)穩定(ding)。從(cong)價格上(shang)，鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)比(bi)普(pu)通的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)要貴，且由(you)于鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)量較小(xiao)，使(shi)用(yong)在(zai)主(zhu)(zhu)板(ban)(ban)(ban)上(shang)時(shi)，需要使(shi)用(yong)更多數量的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)，單單鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)成本(ben)(ben)就(jiu)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)幾十(shi)倍，這也(ye)是導致工(gong)控(kong)(kong)主(zhu)(zhu)板(ban)(ban)(ban)比(bi)商用(yong)主(zhu)(zhu)板(ban)(ban)(ban)成本(ben)(ben)價格高(gao)的(de)原因(yin)之一(yi)。隨著國產(chan)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)廠家越來越多，固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)的(de)價格的(de)下(xia)降，現在(zai)的(de)高(gao)檔次的(de)商用(yong)主(zhu)(zhu)板(ban)(ban)(ban)都(dou)在(zai)使(shi)用(yong)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)。
3)工控(kong)主(zhu)板的PCB
商用(yong)主(zhu)板(ban)(ban)(ban)采用(yong)的是(shi)4層(ceng)(ceng)PCB設(she)計(ji)(ji)，一般的PCB線路板(ban)(ban)(ban)分有四(si)層(ceng)(ceng)，最(zui)上(shang)和最(zui)下的兩(liang)層(ceng)(ceng)是(shi)信號層(ceng)(ceng)，中間兩(liang)層(ceng)(ceng)是(shi)接地層(ceng)(ceng)和電源層(ceng)(ceng)，將接地和電源層(ceng)(ceng)放在中間。工業主(zhu)板(ban)(ban)(ban)采用(yong)的是(shi)6層(ceng)(ceng)以上(shang)PCB線路板(ban)(ban)(ban)設(she)計(ji)(ji)，其設(she)計(ji)(ji)是(shi)為了加強主(zhu)板(ban)(ban)(ban)的抗電磁干擾、電磁兼(jian)容能力(li)，增強主(zhu)板(ban)(ban)(ban)的穩定性等等。
4)工控主板的壽命(ming)
與商用(yong)(yong)主(zhu)(zhu)板2到3年使用(yong)(yong)壽(shou)命(ming)(ming)不同，大多數的工(gong)控(kong)主(zhu)(zhu)板壽(shou)命(ming)(ming)要求在3年以上，部分高品質的工(gong)控(kong)主(zhu)(zhu)板，使用(yong)(yong)壽(shou)命(ming)(ming)甚至達(da)到5—7年。
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