您當前的位置:首頁 > 新聞資訊 > 行業新聞行業新聞
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:黃瓜視頻APP在線下載:深圳市澤創偉業科技有限公司
為什(shen)么工控(kong)主板的價(jia)格比商用主板高(gao)?相信很多(duo)用戶朋友都(dou)有(you)這個疑問(wen),下面澤創(chuang)偉業小(xiao)編就來給大家分(fen)析(xi)下。
一、保護功能
商用主(zhu)板沒(mei)有(you)提供(gong)的任何的保護功(gong)能;
工控(kong)主板通過特(te)殊設(she)計,在遇到死(si)機(ji)等異常情況(kuang),可以實現看(kan)門狗自(zi)動重新啟動、防浪(lang)涌沖擊等功(gong)能,全力的保證系統(tong)在惡劣環境的高穩定性的要求。
二、工作溫度與散熱方式
商用主板基本只能在5℃~38℃之間(jian)的環境溫度(du)中(zhong)使用,對機構的散熱要求低,講究(jiu)外(wai)觀夠炫夠酷。
工(gong)控主板可以在(zai)-20℃~60℃之間的(de)(de)環(huan)境中穩定(ding)、無故障的(de)(de)工(gong)作,甚至某些(xie)工(gong)業主板采用(yong)特(te)殊的(de)(de)寬溫(wen)設計,溫(wen)度(du)范圍(wei)可達-20度(du)~70度(du)。這對機(ji)(ji)構(gou)的(de)(de)散(san)熱方案,散(san)熱效率都是一(yi)個嚴峻的(de)(de)考驗。在(zai)工(gong)控主板機(ji)(ji)構(gou)的(de)(de)散(san)熱設計上,必須使用(yong)的(de)(de)特(te)殊散(san)熱設計,甚至還采用(yong)全鋁制的(de)(de)機(ji)(ji)構(gou)外(wai)殼,而且對CPU、南北橋和硬盤等(deng)發熱大戶,進行特(te)殊處理,保證(zheng)工(gong)控主板和整機(ji)(ji)的(de)(de)正常運行。
很多工控(kong)機(ji)由于在惡(e)劣(lie)的(de)(de)應用(yong)環(huan)(huan)境下(xia)(例(li)如潮濕、振(zhen)動、多塵(chen)、輻射、高溫等(deng)等(deng)應用(yong)環(huan)(huan)境)使用(yong),空(kong)氣中的(de)(de)塵(chen)埃和(he)鹽分(fen),都會對(dui)主板(ban)(ban)造成(cheng)腐(fu)蝕,影響主板(ban)(ban)的(de)(de)正常使用(yong),因此很多工控(kong)機(ji)有(you)(you)必要(yao)(yao)采用(yong)無(wu)風(feng)扇(shan)的(de)(de)機(ji)箱結構,防止惡(e)劣(lie)環(huan)(huan)境對(dui)系統造成(cheng)傷(shang)害。但是(shi)全密封無(wu)風(feng)扇(shan)的(de)(de)結構,因為熱源的(de)(de)互(hu)相干擾(rao),對(dui)主板(ban)(ban)的(de)(de)性(xing)能(neng)(neng)和(he)穩(wen)定性(xing)的(de)(de)要(yao)(yao)求比較高,對(dui)機(ji)構的(de)(de)散熱方式和(he)散熱效能(neng)(neng)的(de)(de)要(yao)(yao)求很高,務必要(yao)(yao)將(jiang)積熱有(you)(you)效散發出去。
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(shang)用主板:
商用(yong)(yong)主(zhu)板由(you)于(yu)其(qi)更(geng)新換(huan)代的(de)速(su)度比較(jiao)快(kuai),且對產(chan)品(pin)的(de)穩定(ding)(ding)性及使(shi)用(yong)(yong)環境的(de)要(yao)求比較(jiao)低,故(gu)此(ci)追求的(de)是(shi)產(chan)品(pin)的(de)時效性,以及本身產(chan)品(pin)的(de)市場(chang)定(ding)(ding)位(wei),對元(yuan)(yuan)器(qi)件選(xuan)擇(ze)要(yao)求上(shang)一(yi)般只需(xu)滿足系(xi)統運行2到(dao)3年的(de)使(shi)用(yong)(yong)壽命即可(3年之后大部(bu)分已經更(geng)新換(huan)代了),元(yuan)(yuan)器(qi)件的(de)用(yong)(yong)料上(shang)使(shi)用(yong)(yong)普(pu)通級別的(de)就可以了。例如電容,商用(yong)(yong)主(zhu)板都(dou)是(shi)大量使(shi)用(yong)(yong)普(pu)通的(de)電解電容,一(yi)是(shi)出(chu)于(yu)商用(yong)(yong)市場(chang)產(chan)品(pin)的(de)使(shi)用(yong)(yong)考慮,二是(shi)為降低主(zhu)板的(de)成本考慮。
工控主板(ban):
1)工控主板的元器(qi)件
工(gong)控主板選(xuan)料(liao)會選(xuan)用(yong)經過長時間,高(gao)要(yao)求驗證(zheng)元器件(jian),用(yong)以保證(zheng)產品在惡劣(lie)條件(jian)下(xia)高(gao)可靠(kao)性要(yao)求。例如工(gong)控主板的元器件(jian)需要(yao)適應寬溫(wen)環境(-20℃~60℃),如固態電容器,保證(zheng)在惡劣(lie)環境下(xia)(壽命期(qi)內永久開機、氣候惡劣(lie)、潮濕、振動、多(duo)塵、輻射(she)、高(gao)溫(wen)等(deng)等(deng))正常工(gong)作;主板元器件(jian)需要(yao)耐高(gao)溫(wen)、抗潮濕等(deng)等(deng)。
2)工(gong)控主板的電容
工(gong)控主(zhu)板采用(yong)(yong)的(de)(de)(de)是高質量(liang)的(de)(de)(de)貼(tie)片(pian)式(shi)(shi)的(de)(de)(de)固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、鉭、陶瓷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),即使(shi)使(shi)用(yong)(yong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),對其品質、性(xing)能及(ji)壽命要求也遠高于商用(yong)(yong)產品,現在的(de)(de)(de)工(gong)控主(zhu)板都(dou)基本(ben)上(shang)采用(yong)(yong)固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),特(te)別中高端的(de)(de)(de)工(gong)控主(zhu)板。商用(yong)(yong)主(zhu)板基本(ben)都(dou)是大(da)量(liang)采用(yong)(yong)針(zhen)腳式(shi)(shi)的(de)(de)(de)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),因為(wei)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)成本(ben)低、容(rong)(rong)(rong)(rong)(rong)(rong)值大(da)一個(ge)可以頂多個(ge)貼(tie)片(pian)或坦電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)。從性(xing)質來說,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)穩定性(xing)不(bu)及(ji)鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、陶瓷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)高,壽命不(bu)及(ji)它們長,耐高溫程度(du)不(bu)及(ji)它們好(hao)。貼(tie)片(pian)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比(bi)針(zhen)腳式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)更加穩定。從價格(ge)(ge)上(shang),鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比(bi)普通的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)要貴,且(qie)由于鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)量(liang)較小,使(shi)用(yong)(yong)在主(zhu)板上(shang)時,需要使(shi)用(yong)(yong)更多數量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),單單鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)成本(ben)就是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)幾十(shi)倍,這也是導致工(gong)控主(zhu)板比(bi)商用(yong)(yong)主(zhu)板成本(ben)價格(ge)(ge)高的(de)(de)(de)原(yuan)因之一。隨著國(guo)產固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器廠家越來越多,固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器的(de)(de)(de)價格(ge)(ge)的(de)(de)(de)下(xia)降(jiang),現在的(de)(de)(de)高檔次(ci)的(de)(de)(de)商用(yong)(yong)主(zhu)板都(dou)在使(shi)用(yong)(yong)固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器。
3)工(gong)控主板的PCB
商用(yong)主(zhu)板(ban)(ban)采用(yong)的(de)是(shi)4層PCB設(she)(she)計(ji)(ji),一般的(de)PCB線(xian)路板(ban)(ban)分有四層,最(zui)上和(he)(he)最(zui)下的(de)兩層是(shi)信號層,中(zhong)(zhong)間兩層是(shi)接地層和(he)(he)電(dian)(dian)(dian)源(yuan)層,將接地和(he)(he)電(dian)(dian)(dian)源(yuan)層放在中(zhong)(zhong)間。工業主(zhu)板(ban)(ban)采用(yong)的(de)是(shi)6層以上PCB線(xian)路板(ban)(ban)設(she)(she)計(ji)(ji),其設(she)(she)計(ji)(ji)是(shi)為(wei)了加(jia)強(qiang)主(zhu)板(ban)(ban)的(de)抗電(dian)(dian)(dian)磁干擾、電(dian)(dian)(dian)磁兼(jian)容能力,增強(qiang)主(zhu)板(ban)(ban)的(de)穩定性等等。
4)工控主板的壽命
與商用(yong)主(zhu)(zhu)板(ban)2到3年(nian)使用(yong)壽命不(bu)同(tong),大多數的(de)工控主(zhu)(zhu)板(ban)壽命要求在3年(nian)以上,部分高品質的(de)工控主(zhu)(zhu)板(ban),使用(yong)壽命甚至達到5—7年(nian)。
一、保護功能
商用主(zhu)板沒(mei)有(you)提供(gong)的任何的保護功(gong)能;
工控(kong)主板通過特(te)殊設(she)計,在遇到死(si)機(ji)等異常情況(kuang),可以實現看(kan)門狗自(zi)動重新啟動、防浪(lang)涌沖擊等功(gong)能,全力的保證系統(tong)在惡劣環境的高穩定性的要求。
二、工作溫度與散熱方式
商用主板基本只能在5℃~38℃之間(jian)的環境溫度(du)中(zhong)使用,對機構的散熱要求低,講究(jiu)外(wai)觀夠炫夠酷。
工(gong)控主板可以在(zai)-20℃~60℃之間的(de)(de)環(huan)境中穩定(ding)、無故障的(de)(de)工(gong)作,甚至某些(xie)工(gong)業主板采用(yong)特(te)殊的(de)(de)寬溫(wen)設計,溫(wen)度(du)范圍(wei)可達-20度(du)~70度(du)。這對機(ji)(ji)構(gou)的(de)(de)散(san)熱方案,散(san)熱效率都是一(yi)個嚴峻的(de)(de)考驗。在(zai)工(gong)控主板機(ji)(ji)構(gou)的(de)(de)散(san)熱設計上,必須使用(yong)的(de)(de)特(te)殊散(san)熱設計,甚至還采用(yong)全鋁制的(de)(de)機(ji)(ji)構(gou)外(wai)殼,而且對CPU、南北橋和硬盤等(deng)發熱大戶,進行特(te)殊處理,保證(zheng)工(gong)控主板和整機(ji)(ji)的(de)(de)正常運行。
很多工控(kong)機(ji)由于在惡(e)劣(lie)的(de)(de)應用(yong)環(huan)(huan)境下(xia)(例(li)如潮濕、振(zhen)動、多塵(chen)、輻射、高溫等(deng)等(deng)應用(yong)環(huan)(huan)境)使用(yong),空(kong)氣中的(de)(de)塵(chen)埃和(he)鹽分(fen),都會對(dui)主板(ban)(ban)造成(cheng)腐(fu)蝕,影響主板(ban)(ban)的(de)(de)正常使用(yong),因此很多工控(kong)機(ji)有(you)(you)必要(yao)(yao)采用(yong)無(wu)風(feng)扇(shan)的(de)(de)機(ji)箱結構,防止惡(e)劣(lie)環(huan)(huan)境對(dui)系統造成(cheng)傷(shang)害。但是(shi)全密封無(wu)風(feng)扇(shan)的(de)(de)結構,因為熱源的(de)(de)互(hu)相干擾(rao),對(dui)主板(ban)(ban)的(de)(de)性(xing)能(neng)(neng)和(he)穩(wen)定性(xing)的(de)(de)要(yao)(yao)求比較高,對(dui)機(ji)構的(de)(de)散熱方式和(he)散熱效能(neng)(neng)的(de)(de)要(yao)(yao)求很高,務必要(yao)(yao)將(jiang)積熱有(you)(you)效散發出去。
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(shang)用主板:
商用(yong)(yong)主(zhu)板由(you)于(yu)其(qi)更(geng)新換(huan)代的(de)速(su)度比較(jiao)快(kuai),且對產(chan)品(pin)的(de)穩定(ding)(ding)性及使(shi)用(yong)(yong)環境的(de)要(yao)求比較(jiao)低,故(gu)此(ci)追求的(de)是(shi)產(chan)品(pin)的(de)時效性,以及本身產(chan)品(pin)的(de)市場(chang)定(ding)(ding)位(wei),對元(yuan)(yuan)器(qi)件選(xuan)擇(ze)要(yao)求上(shang)一(yi)般只需(xu)滿足系(xi)統運行2到(dao)3年的(de)使(shi)用(yong)(yong)壽命即可(3年之后大部(bu)分已經更(geng)新換(huan)代了),元(yuan)(yuan)器(qi)件的(de)用(yong)(yong)料上(shang)使(shi)用(yong)(yong)普(pu)通級別的(de)就可以了。例如電容,商用(yong)(yong)主(zhu)板都(dou)是(shi)大量使(shi)用(yong)(yong)普(pu)通的(de)電解電容,一(yi)是(shi)出(chu)于(yu)商用(yong)(yong)市場(chang)產(chan)品(pin)的(de)使(shi)用(yong)(yong)考慮,二是(shi)為降低主(zhu)板的(de)成本考慮。
工控主板(ban):
1)工控主板的元器(qi)件
工(gong)控主板選(xuan)料(liao)會選(xuan)用(yong)經過長時間,高(gao)要(yao)求驗證(zheng)元器件(jian),用(yong)以保證(zheng)產品在惡劣(lie)條件(jian)下(xia)高(gao)可靠(kao)性要(yao)求。例如工(gong)控主板的元器件(jian)需要(yao)適應寬溫(wen)環境(-20℃~60℃),如固態電容器,保證(zheng)在惡劣(lie)環境下(xia)(壽命期(qi)內永久開機、氣候惡劣(lie)、潮濕、振動、多(duo)塵、輻射(she)、高(gao)溫(wen)等(deng)等(deng))正常工(gong)作;主板元器件(jian)需要(yao)耐高(gao)溫(wen)、抗潮濕等(deng)等(deng)。
2)工(gong)控主板的電容
工(gong)控主(zhu)板采用(yong)(yong)的(de)(de)(de)是高質量(liang)的(de)(de)(de)貼(tie)片(pian)式(shi)(shi)的(de)(de)(de)固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、鉭、陶瓷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),即使(shi)使(shi)用(yong)(yong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),對其品質、性(xing)能及(ji)壽命要求也遠高于商用(yong)(yong)產品,現在的(de)(de)(de)工(gong)控主(zhu)板都(dou)基本(ben)上(shang)采用(yong)(yong)固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),特(te)別中高端的(de)(de)(de)工(gong)控主(zhu)板。商用(yong)(yong)主(zhu)板基本(ben)都(dou)是大(da)量(liang)采用(yong)(yong)針(zhen)腳式(shi)(shi)的(de)(de)(de)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),因為(wei)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)成本(ben)低、容(rong)(rong)(rong)(rong)(rong)(rong)值大(da)一個(ge)可以頂多個(ge)貼(tie)片(pian)或坦電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)。從性(xing)質來說,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)穩定性(xing)不(bu)及(ji)鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、陶瓷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)高,壽命不(bu)及(ji)它們長,耐高溫程度(du)不(bu)及(ji)它們好(hao)。貼(tie)片(pian)式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比(bi)針(zhen)腳式(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)更加穩定。從價格(ge)(ge)上(shang),鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比(bi)普通的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)要貴,且(qie)由于鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)量(liang)較小,使(shi)用(yong)(yong)在主(zhu)板上(shang)時,需要使(shi)用(yong)(yong)更多數量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),單單鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)成本(ben)就是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)幾十(shi)倍,這也是導致工(gong)控主(zhu)板比(bi)商用(yong)(yong)主(zhu)板成本(ben)價格(ge)(ge)高的(de)(de)(de)原(yuan)因之一。隨著國(guo)產固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器廠家越來越多,固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器的(de)(de)(de)價格(ge)(ge)的(de)(de)(de)下(xia)降(jiang),現在的(de)(de)(de)高檔次(ci)的(de)(de)(de)商用(yong)(yong)主(zhu)板都(dou)在使(shi)用(yong)(yong)固(gu)(gu)(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器。
3)工(gong)控主板的PCB
商用(yong)主(zhu)板(ban)(ban)采用(yong)的(de)是(shi)4層PCB設(she)(she)計(ji)(ji),一般的(de)PCB線(xian)路板(ban)(ban)分有四層,最(zui)上和(he)(he)最(zui)下的(de)兩層是(shi)信號層,中(zhong)(zhong)間兩層是(shi)接地層和(he)(he)電(dian)(dian)(dian)源(yuan)層,將接地和(he)(he)電(dian)(dian)(dian)源(yuan)層放在中(zhong)(zhong)間。工業主(zhu)板(ban)(ban)采用(yong)的(de)是(shi)6層以上PCB線(xian)路板(ban)(ban)設(she)(she)計(ji)(ji),其設(she)(she)計(ji)(ji)是(shi)為(wei)了加(jia)強(qiang)主(zhu)板(ban)(ban)的(de)抗電(dian)(dian)(dian)磁干擾、電(dian)(dian)(dian)磁兼(jian)容能力,增強(qiang)主(zhu)板(ban)(ban)的(de)穩定性等等。
4)工控主板的壽命
與商用(yong)主(zhu)(zhu)板(ban)2到3年(nian)使用(yong)壽命不(bu)同(tong),大多數的(de)工控主(zhu)(zhu)板(ban)壽命要求在3年(nian)以上,部分高品質的(de)工控主(zhu)(zhu)板(ban),使用(yong)壽命甚至達到5—7年(nian)。