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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：草莓視頻在線下載:深圳市澤創偉業科技有限公司
為什(shen)么工控主板的價(jia)格比商用主板高?相(xiang)信很多用戶(hu)朋(peng)友都有這個疑問(wen)，下面澤創偉業小(xiao)編(bian)就來給(gei)大家(jia)分析下。
一、保護功能
商用(yong)主板沒有提(ti)供的任何的保護(hu)功能;
工控(kong)主板通過特殊設計，在遇到死機(ji)等異(yi)常(chang)情況，可以(yi)實現看門(men)狗自動(dong)重新(xin)啟動(dong)、防(fang)浪(lang)涌(yong)沖擊等功能，全力的保證系統在惡(e)劣環境的高穩定性的要求。
二、工作溫度與散熱方式
商用主板基(ji)本只(zhi)能在5℃~38℃之間的(de)環(huan)境溫度中使(shi)用，對機構的(de)散熱(re)要求低，講究外觀夠炫夠酷。
工(gong)控(kong)主(zhu)板(ban)可以(yi)在-20℃~60℃之間的(de)(de)環境中穩定(ding)、無故障的(de)(de)工(gong)作，甚至(zhi)某些工(gong)業(ye)主(zhu)板(ban)采用(yong)(yong)特(te)殊的(de)(de)寬溫設計(ji)，溫度(du)(du)范(fan)圍可達-20度(du)(du)~70度(du)(du)。這對機構(gou)的(de)(de)散(san)熱(re)(re)方案(an)，散(san)熱(re)(re)效率都是一個嚴峻的(de)(de)考(kao)驗。在工(gong)控(kong)主(zhu)板(ban)機構(gou)的(de)(de)散(san)熱(re)(re)設計(ji)上，必須(xu)使(shi)用(yong)(yong)的(de)(de)特(te)殊散(san)熱(re)(re)設計(ji)，甚至(zhi)還采用(yong)(yong)全鋁制的(de)(de)機構(gou)外殼(ke)，而且對CPU、南北橋和(he)硬盤等發(fa)熱(re)(re)大(da)戶，進行(xing)(xing)特(te)殊處理，保證工(gong)控(kong)主(zhu)板(ban)和(he)整(zheng)機的(de)(de)正常(chang)運行(xing)(xing)。
很多(duo)工(gong)控(kong)機(ji)由(you)于在惡(e)劣的應用(yong)(yong)環境(jing)下(例如潮濕、振動(dong)、多(duo)塵、輻(fu)射、高(gao)溫等等應用(yong)(yong)環境(jing))使(shi)用(yong)(yong)，空(kong)氣(qi)中的塵埃和(he)鹽(yan)分，都(dou)會對主板造(zao)(zao)成腐(fu)蝕，影響主板的正常(chang)使(shi)用(yong)(yong)，因此很多(duo)工(gong)控(kong)機(ji)有必要(yao)采用(yong)(yong)無(wu)風(feng)扇的機(ji)箱結(jie)構，防(fang)止惡(e)劣環境(jing)對系統造(zao)(zao)成傷害。但是全密封無(wu)風(feng)扇的結(jie)構，因為熱(re)(re)(re)(re)源的互(hu)相干(gan)擾，對主板的性能和(he)穩(wen)定性的要(yao)求(qiu)比較高(gao)，對機(ji)構的散(san)熱(re)(re)(re)(re)方式和(he)散(san)熱(re)(re)(re)(re)效(xiao)能的要(yao)求(qiu)很高(gao)，務必要(yao)將積熱(re)(re)(re)(re)有效(xiao)散(san)發出去(qu)。
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(shang)用主板(ban)：
商(shang)用(yong)主板由于其(qi)更新(xin)換(huan)代(dai)的(de)速度比較快(kuai)，且對(dui)產品的(de)穩定性及使(shi)用(yong)環(huan)境的(de)要(yao)(yao)求(qiu)(qiu)比較低(di)，故此追(zhui)求(qiu)(qiu)的(de)是產品的(de)時效性，以(yi)及本(ben)身產品的(de)市場定位(wei)，對(dui)元器件選擇要(yao)(yao)求(qiu)(qiu)上一般只需滿足(zu)系統運行2到3年的(de)使(shi)用(yong)壽命即可(ke)(ke)(3年之后大部分已經更新(xin)換(huan)代(dai)了)，元器件的(de)用(yong)料(liao)上使(shi)用(yong)普(pu)通級別的(de)就可(ke)(ke)以(yi)了。例如電容，商(shang)用(yong)主板都是大量使(shi)用(yong)普(pu)通的(de)電解電容，一是出于商(shang)用(yong)市場產品的(de)使(shi)用(yong)考(kao)慮，二是為(wei)降低(di)主板的(de)成本(ben)考(kao)慮。
工控主板(ban)：
1)工(gong)控主板的(de)元器件
工控(kong)主(zhu)板選料(liao)會選用(yong)經過長時間，高(gao)(gao)要求驗證元(yuan)(yuan)器(qi)件，用(yong)以保證產品在(zai)惡劣條件下高(gao)(gao)可靠性要求。例如工控(kong)主(zhu)板的元(yuan)(yuan)器(qi)件需要適應寬溫環境(-20℃~60℃)，如固(gu)態電容器(qi)，保證在(zai)惡劣環境下(壽命期(qi)內永久(jiu)開機(ji)、氣候惡劣、潮(chao)濕(shi)、振動(dong)、多(duo)塵、輻射、高(gao)(gao)溫等(deng)等(deng))正常(chang)工作(zuo);主(zhu)板元(yuan)(yuan)器(qi)件需要耐高(gao)(gao)溫、抗潮(chao)濕(shi)等(deng)等(deng)。
2)工控主板的電容
工(gong)(gong)(gong)控主板(ban)采(cai)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)是(shi)高(gao)質(zhi)量(liang)的(de)(de)(de)(de)(de)貼(tie)片式的(de)(de)(de)(de)(de)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、鉭(tan)、陶(tao)瓷電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，即使(shi)(shi)使(shi)(shi)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，對(dui)其品(pin)質(zhi)、性(xing)能及(ji)(ji)壽命(ming)要(yao)求也遠高(gao)于(yu)商(shang)(shang)用(yong)(yong)(yong)(yong)產(chan)品(pin)，現(xian)在的(de)(de)(de)(de)(de)工(gong)(gong)(gong)控主板(ban)都(dou)基本上采(cai)用(yong)(yong)(yong)(yong)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，特別中(zhong)高(gao)端的(de)(de)(de)(de)(de)工(gong)(gong)(gong)控主板(ban)。商(shang)(shang)用(yong)(yong)(yong)(yong)主板(ban)基本都(dou)是(shi)大量(liang)采(cai)用(yong)(yong)(yong)(yong)針(zhen)腳(jiao)式的(de)(de)(de)(de)(de)大電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，因為大電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)成本低(di)、容(rong)(rong)(rong)(rong)(rong)(rong)值大一個(ge)可以頂多個(ge)貼(tie)片或坦(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)。從性(xing)質(zhi)來(lai)說(shuo)，電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)穩定性(xing)不及(ji)(ji)鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、陶(tao)瓷電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)高(gao)，壽命(ming)不及(ji)(ji)它們長，耐高(gao)溫程(cheng)度不及(ji)(ji)它們好。貼(tie)片式電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比針(zhen)腳(jiao)式電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)更加穩定。從價(jia)格(ge)(ge)上，鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比普通的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)要(yao)貴，且由(you)于(yu)鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)量(liang)較小，使(shi)(shi)用(yong)(yong)(yong)(yong)在主板(ban)上時，需要(yao)使(shi)(shi)用(yong)(yong)(yong)(yong)更多數(shu)量(liang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，單單鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)成本就(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)幾十倍(bei)，這也是(shi)導(dao)致工(gong)(gong)(gong)控主板(ban)比商(shang)(shang)用(yong)(yong)(yong)(yong)主板(ban)成本價(jia)格(ge)(ge)高(gao)的(de)(de)(de)(de)(de)原因之(zhi)一。隨著國(guo)產(chan)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)廠家越來(lai)越多，固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)的(de)(de)(de)(de)(de)價(jia)格(ge)(ge)的(de)(de)(de)(de)(de)下降(jiang)，現(xian)在的(de)(de)(de)(de)(de)高(gao)檔次(ci)的(de)(de)(de)(de)(de)商(shang)(shang)用(yong)(yong)(yong)(yong)主板(ban)都(dou)在使(shi)(shi)用(yong)(yong)(yong)(yong)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)。
3)工控主板(ban)的(de)PCB
商用主板(ban)(ban)采(cai)用的是4層PCB設計(ji)，一般的PCB線路板(ban)(ban)分有四層，最(zui)上和(he)最(zui)下(xia)的兩(liang)層是信號層，中間(jian)兩(liang)層是接(jie)地(di)(di)層和(he)電源層，將接(jie)地(di)(di)和(he)電源層放在中間(jian)。工(gong)業主板(ban)(ban)采(cai)用的是6層以(yi)上PCB線路板(ban)(ban)設計(ji)，其設計(ji)是為了加強主板(ban)(ban)的抗電磁干擾(rao)、電磁兼容能(neng)力，增強主板(ban)(ban)的穩(wen)定性等(deng)等(deng)。
4)工(gong)控(kong)主板(ban)的壽命
與商用(yong)主(zhu)板2到3年(nian)使用(yong)壽(shou)命(ming)不同，大多數的(de)(de)工控(kong)主(zhu)板壽(shou)命(ming)要(yao)求在(zai)3年(nian)以上，部分高品質的(de)(de)工控(kong)主(zhu)板，使用(yong)壽(shou)命(ming)甚至(zhi)達到5—7年(nian)。
一、保護功能
商用(yong)主板沒有提(ti)供的任何的保護(hu)功能;
工控(kong)主板通過特殊設計，在遇到死機(ji)等異(yi)常(chang)情況，可以(yi)實現看門(men)狗自動(dong)重新(xin)啟動(dong)、防(fang)浪(lang)涌(yong)沖擊等功能，全力的保證系統在惡(e)劣環境的高穩定性的要求。
二、工作溫度與散熱方式
商用主板基(ji)本只(zhi)能在5℃~38℃之間的(de)環(huan)境溫度中使(shi)用，對機構的(de)散熱(re)要求低，講究外觀夠炫夠酷。
工(gong)控(kong)主(zhu)板(ban)可以(yi)在-20℃~60℃之間的(de)(de)環境中穩定(ding)、無故障的(de)(de)工(gong)作，甚至(zhi)某些工(gong)業(ye)主(zhu)板(ban)采用(yong)(yong)特(te)殊的(de)(de)寬溫設計(ji)，溫度(du)(du)范(fan)圍可達-20度(du)(du)~70度(du)(du)。這對機構(gou)的(de)(de)散(san)熱(re)(re)方案(an)，散(san)熱(re)(re)效率都是一個嚴峻的(de)(de)考(kao)驗。在工(gong)控(kong)主(zhu)板(ban)機構(gou)的(de)(de)散(san)熱(re)(re)設計(ji)上，必須(xu)使(shi)用(yong)(yong)的(de)(de)特(te)殊散(san)熱(re)(re)設計(ji)，甚至(zhi)還采用(yong)(yong)全鋁制的(de)(de)機構(gou)外殼(ke)，而且對CPU、南北橋和(he)硬盤等發(fa)熱(re)(re)大(da)戶，進行(xing)(xing)特(te)殊處理，保證工(gong)控(kong)主(zhu)板(ban)和(he)整(zheng)機的(de)(de)正常(chang)運行(xing)(xing)。
很多(duo)工(gong)控(kong)機(ji)由(you)于在惡(e)劣的應用(yong)(yong)環境(jing)下(例如潮濕、振動(dong)、多(duo)塵、輻(fu)射、高(gao)溫等等應用(yong)(yong)環境(jing))使(shi)用(yong)(yong)，空(kong)氣(qi)中的塵埃和(he)鹽(yan)分，都(dou)會對主板造(zao)(zao)成腐(fu)蝕，影響主板的正常(chang)使(shi)用(yong)(yong)，因此很多(duo)工(gong)控(kong)機(ji)有必要(yao)采用(yong)(yong)無(wu)風(feng)扇的機(ji)箱結(jie)構，防(fang)止惡(e)劣環境(jing)對系統造(zao)(zao)成傷害。但是全密封無(wu)風(feng)扇的結(jie)構，因為熱(re)(re)(re)(re)源的互(hu)相干(gan)擾，對主板的性能和(he)穩(wen)定性的要(yao)求(qiu)比較高(gao)，對機(ji)構的散(san)熱(re)(re)(re)(re)方式和(he)散(san)熱(re)(re)(re)(re)效(xiao)能的要(yao)求(qiu)很高(gao)，務必要(yao)將積熱(re)(re)(re)(re)有效(xiao)散(san)發出去(qu)。
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(shang)用主板(ban)：
商(shang)用(yong)主板由于其(qi)更新(xin)換(huan)代(dai)的(de)速度比較快(kuai)，且對(dui)產品的(de)穩定性及使(shi)用(yong)環(huan)境的(de)要(yao)(yao)求(qiu)(qiu)比較低(di)，故此追(zhui)求(qiu)(qiu)的(de)是產品的(de)時效性，以(yi)及本(ben)身產品的(de)市場定位(wei)，對(dui)元器件選擇要(yao)(yao)求(qiu)(qiu)上一般只需滿足(zu)系統運行2到3年的(de)使(shi)用(yong)壽命即可(ke)(ke)(3年之后大部分已經更新(xin)換(huan)代(dai)了)，元器件的(de)用(yong)料(liao)上使(shi)用(yong)普(pu)通級別的(de)就可(ke)(ke)以(yi)了。例如電容，商(shang)用(yong)主板都是大量使(shi)用(yong)普(pu)通的(de)電解電容，一是出于商(shang)用(yong)市場產品的(de)使(shi)用(yong)考(kao)慮，二是為(wei)降低(di)主板的(de)成本(ben)考(kao)慮。
工控主板(ban)：
1)工(gong)控主板的(de)元器件
工控(kong)主(zhu)板選料(liao)會選用(yong)經過長時間，高(gao)(gao)要求驗證元(yuan)(yuan)器(qi)件，用(yong)以保證產品在(zai)惡劣條件下高(gao)(gao)可靠性要求。例如工控(kong)主(zhu)板的元(yuan)(yuan)器(qi)件需要適應寬溫環境(-20℃~60℃)，如固(gu)態電容器(qi)，保證在(zai)惡劣環境下(壽命期(qi)內永久(jiu)開機(ji)、氣候惡劣、潮(chao)濕(shi)、振動(dong)、多(duo)塵、輻射、高(gao)(gao)溫等(deng)等(deng))正常(chang)工作(zuo);主(zhu)板元(yuan)(yuan)器(qi)件需要耐高(gao)(gao)溫、抗潮(chao)濕(shi)等(deng)等(deng)。
2)工控主板的電容
工(gong)(gong)(gong)控主板(ban)采(cai)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)是(shi)高(gao)質(zhi)量(liang)的(de)(de)(de)(de)(de)貼(tie)片式的(de)(de)(de)(de)(de)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、鉭(tan)、陶(tao)瓷電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，即使(shi)(shi)使(shi)(shi)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，對(dui)其品(pin)質(zhi)、性(xing)能及(ji)(ji)壽命(ming)要(yao)求也遠高(gao)于(yu)商(shang)(shang)用(yong)(yong)(yong)(yong)產(chan)品(pin)，現(xian)在的(de)(de)(de)(de)(de)工(gong)(gong)(gong)控主板(ban)都(dou)基本上采(cai)用(yong)(yong)(yong)(yong)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，特別中(zhong)高(gao)端的(de)(de)(de)(de)(de)工(gong)(gong)(gong)控主板(ban)。商(shang)(shang)用(yong)(yong)(yong)(yong)主板(ban)基本都(dou)是(shi)大量(liang)采(cai)用(yong)(yong)(yong)(yong)針(zhen)腳(jiao)式的(de)(de)(de)(de)(de)大電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，因為大電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)成本低(di)、容(rong)(rong)(rong)(rong)(rong)(rong)值大一個(ge)可以頂多個(ge)貼(tie)片或坦(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)。從性(xing)質(zhi)來(lai)說(shuo)，電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)穩定性(xing)不及(ji)(ji)鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、陶(tao)瓷電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)高(gao)，壽命(ming)不及(ji)(ji)它們長，耐高(gao)溫程(cheng)度不及(ji)(ji)它們好。貼(tie)片式電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比針(zhen)腳(jiao)式電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)更加穩定。從價(jia)格(ge)(ge)上，鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比普通的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)要(yao)貴，且由(you)于(yu)鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)量(liang)較小，使(shi)(shi)用(yong)(yong)(yong)(yong)在主板(ban)上時，需要(yao)使(shi)(shi)用(yong)(yong)(yong)(yong)更多數(shu)量(liang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，單單鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)成本就(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)幾十倍(bei)，這也是(shi)導(dao)致工(gong)(gong)(gong)控主板(ban)比商(shang)(shang)用(yong)(yong)(yong)(yong)主板(ban)成本價(jia)格(ge)(ge)高(gao)的(de)(de)(de)(de)(de)原因之(zhi)一。隨著國(guo)產(chan)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)廠家越來(lai)越多，固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)的(de)(de)(de)(de)(de)價(jia)格(ge)(ge)的(de)(de)(de)(de)(de)下降(jiang)，現(xian)在的(de)(de)(de)(de)(de)高(gao)檔次(ci)的(de)(de)(de)(de)(de)商(shang)(shang)用(yong)(yong)(yong)(yong)主板(ban)都(dou)在使(shi)(shi)用(yong)(yong)(yong)(yong)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)。
3)工控主板(ban)的(de)PCB
商用主板(ban)(ban)采(cai)用的是4層PCB設計(ji)，一般的PCB線路板(ban)(ban)分有四層，最(zui)上和(he)最(zui)下(xia)的兩(liang)層是信號層，中間(jian)兩(liang)層是接(jie)地(di)(di)層和(he)電源層，將接(jie)地(di)(di)和(he)電源層放在中間(jian)。工(gong)業主板(ban)(ban)采(cai)用的是6層以(yi)上PCB線路板(ban)(ban)設計(ji)，其設計(ji)是為了加強主板(ban)(ban)的抗電磁干擾(rao)、電磁兼容能(neng)力，增強主板(ban)(ban)的穩(wen)定性等(deng)等(deng)。
4)工(gong)控(kong)主板(ban)的壽命
與商用(yong)主(zhu)板2到3年(nian)使用(yong)壽(shou)命(ming)不同，大多數的(de)(de)工控(kong)主(zhu)板壽(shou)命(ming)要(yao)求在(zai)3年(nian)以上，部分高品質的(de)(de)工控(kong)主(zhu)板，使用(yong)壽(shou)命(ming)甚至(zhi)達到5—7年(nian)。
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