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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:最污草莓視頻:深圳市澤創偉業科技有限公司
為什(shen)么(me)工控主(zhu)板的價格比商用主(zhu)板高(gao)?相信(xin)很多用戶朋友都有這個(ge)疑問,下面(mian)澤創(chuang)偉(wei)業小(xiao)編就來給(gei)大家分(fen)析下。
一、保護功能
商(shang)用主板(ban)沒有提(ti)供的任(ren)何的保護功能;
工(gong)控主板通過特殊設計,在遇到死機等異常(chang)情況,可以實現看(kan)門狗自(zi)動重新啟動、防浪涌沖擊等功能(neng),全力(li)的(de)(de)保證系(xi)統在惡劣環境(jing)的(de)(de)高穩定(ding)性(xing)的(de)(de)要求。
二、工作溫度與散熱方式
商用主板基(ji)本(ben)只能在5℃~38℃之間的環境溫度中使用,對機(ji)構的散熱(re)要求低,講究外觀夠(gou)炫(xuan)夠(gou)酷。
工(gong)(gong)控主板可以在(zai)-20℃~60℃之間的(de)環境(jing)中穩(wen)定、無故障的(de)工(gong)(gong)作,甚至某些工(gong)(gong)業主板采(cai)用(yong)特殊(shu)的(de)寬溫(wen)設計(ji)(ji),溫(wen)度(du)(du)范圍可達-20度(du)(du)~70度(du)(du)。這對機(ji)構的(de)散(san)熱方案,散(san)熱效率都是一個嚴峻(jun)的(de)考(kao)驗(yan)。在(zai)工(gong)(gong)控主板機(ji)構的(de)散(san)熱設計(ji)(ji)上(shang),必須(xu)使(shi)用(yong)的(de)特殊(shu)散(san)熱設計(ji)(ji),甚至還采(cai)用(yong)全鋁制的(de)機(ji)構外(wai)殼,而且對CPU、南(nan)北橋和(he)硬盤等發熱大戶,進行(xing)特殊(shu)處理,保證(zheng)工(gong)(gong)控主板和(he)整機(ji)的(de)正常運行(xing)。
很多(duo)工控機(ji)由于在惡劣(lie)的(de)(de)應用(yong)環(huan)境(jing)下(例如潮濕、振動、多(duo)塵、輻射、高(gao)溫(wen)等(deng)等(deng)應用(yong)環(huan)境(jing))使用(yong),空氣中(zhong)的(de)(de)塵埃和鹽分,都會對主板(ban)造成(cheng)腐蝕,影響主板(ban)的(de)(de)正(zheng)常使用(yong),因此很多(duo)工控機(ji)有必要采用(yong)無風扇的(de)(de)機(ji)箱結構(gou),防止惡劣(lie)環(huan)境(jing)對系統造成(cheng)傷害。但是全密封無風扇的(de)(de)結構(gou),因為熱(re)源(yuan)的(de)(de)互相干擾,對主板(ban)的(de)(de)性能(neng)和穩定性的(de)(de)要求(qiu)比較高(gao),對機(ji)構(gou)的(de)(de)散(san)(san)熱(re)方式和散(san)(san)熱(re)效(xiao)能(neng)的(de)(de)要求(qiu)很高(gao),務必要將積熱(re)有效(xiao)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:
商用(yong)主板由于(yu)其(qi)更新換代的(de)(de)(de)速度比較快,且對(dui)產(chan)(chan)品(pin)的(de)(de)(de)穩定性及使用(yong)環境的(de)(de)(de)要(yao)求比較低(di),故此追(zhui)求的(de)(de)(de)是(shi)產(chan)(chan)品(pin)的(de)(de)(de)時效性,以(yi)及本(ben)身產(chan)(chan)品(pin)的(de)(de)(de)市場(chang)定位,對(dui)元(yuan)器件(jian)選擇要(yao)求上(shang)一般只需滿足系統(tong)運行2到3年(nian)的(de)(de)(de)使用(yong)壽命即可(ke)(3年(nian)之(zhi)后大(da)部分已經更新換代了(le)),元(yuan)器件(jian)的(de)(de)(de)用(yong)料上(shang)使用(yong)普通(tong)(tong)級別的(de)(de)(de)就可(ke)以(yi)了(le)。例如電(dian)容,商用(yong)主板都是(shi)大(da)量使用(yong)普通(tong)(tong)的(de)(de)(de)電(dian)解電(dian)容,一是(shi)出于(yu)商用(yong)市場(chang)產(chan)(chan)品(pin)的(de)(de)(de)使用(yong)考慮,二是(shi)為降低(di)主板的(de)(de)(de)成本(ben)考慮。
工控主板:
1)工控主板的(de)元器(qi)件
工(gong)控主板選料會(hui)選用經過長時間(jian),高(gao)要(yao)求驗(yan)證元(yuan)器(qi)件(jian),用以保證產品在(zai)惡(e)劣(lie)條件(jian)下高(gao)可靠(kao)性要(yao)求。例如(ru)工(gong)控主板的元(yuan)器(qi)件(jian)需(xu)要(yao)適(shi)應(ying)寬溫環境(-20℃~60℃),如(ru)固態電容器(qi),保證在(zai)惡(e)劣(lie)環境下(壽命期(qi)內(nei)永久開機、氣候(hou)惡(e)劣(lie)、潮濕、振(zhen)動、多塵、輻射、高(gao)溫等等)正常工(gong)作;主板元(yuan)器(qi)件(jian)需(xu)要(yao)耐高(gao)溫、抗潮濕等等。
2)工控(kong)主板的電容
工(gong)控(kong)主(zhu)板(ban)(ban)(ban)(ban)采(cai)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)是高(gao)(gao)(gao)(gao)質(zhi)量的(de)(de)(de)(de)(de)(de)貼(tie)(tie)片式的(de)(de)(de)(de)(de)(de)固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、鉭、陶(tao)瓷電(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)(de)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),對其品(pin)質(zhi)、性能及壽(shou)命(ming)要(yao)求也遠高(gao)(gao)(gao)(gao)于商(shang)用(yong)(yong)(yong)(yong)產品(pin),現(xian)在的(de)(de)(de)(de)(de)(de)工(gong)控(kong)主(zhu)板(ban)(ban)(ban)(ban)都基本上(shang)采(cai)用(yong)(yong)(yong)(yong)固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),特(te)別中高(gao)(gao)(gao)(gao)端(duan)的(de)(de)(de)(de)(de)(de)工(gong)控(kong)主(zhu)板(ban)(ban)(ban)(ban)。商(shang)用(yong)(yong)(yong)(yong)主(zhu)板(ban)(ban)(ban)(ban)基本都是大(da)量采(cai)用(yong)(yong)(yong)(yong)針腳式的(de)(de)(de)(de)(de)(de)大(da)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),因為大(da)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)成(cheng)本低、容(rong)(rong)(rong)(rong)(rong)(rong)值大(da)一個可以頂多個貼(tie)(tie)片或坦電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)。從性質(zhi)來說,電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)穩定性不及鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、陶(tao)瓷電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)高(gao)(gao)(gao)(gao),壽(shou)命(ming)不及它(ta)們(men)(men)長,耐高(gao)(gao)(gao)(gao)溫程度不及它(ta)們(men)(men)好。貼(tie)(tie)片式電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比(bi)針腳式電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)更(geng)加穩定。從價格(ge)上(shang),鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比(bi)普通的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)要(yao)貴,且(qie)由于鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)量較小,使(shi)(shi)用(yong)(yong)(yong)(yong)在主(zhu)板(ban)(ban)(ban)(ban)上(shang)時,需(xu)要(yao)使(shi)(shi)用(yong)(yong)(yong)(yong)更(geng)多數量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),單單鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)成(cheng)本就是電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)幾十(shi)倍(bei),這也是導致工(gong)控(kong)主(zhu)板(ban)(ban)(ban)(ban)比(bi)商(shang)用(yong)(yong)(yong)(yong)主(zhu)板(ban)(ban)(ban)(ban)成(cheng)本價格(ge)高(gao)(gao)(gao)(gao)的(de)(de)(de)(de)(de)(de)原(yuan)因之一。隨著國產固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)廠家越(yue)來越(yue)多,固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)的(de)(de)(de)(de)(de)(de)價格(ge)的(de)(de)(de)(de)(de)(de)下降(jiang),現(xian)在的(de)(de)(de)(de)(de)(de)高(gao)(gao)(gao)(gao)檔次(ci)的(de)(de)(de)(de)(de)(de)商(shang)用(yong)(yong)(yong)(yong)主(zhu)板(ban)(ban)(ban)(ban)都在使(shi)(shi)用(yong)(yong)(yong)(yong)固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)。
3)工控主板的PCB
商用主板(ban)采(cai)用的(de)(de)是(shi)(shi)(shi)4層(ceng)PCB設計(ji),一般的(de)(de)PCB線路(lu)板(ban)分有四(si)層(ceng),最上和(he)最下(xia)的(de)(de)兩層(ceng)是(shi)(shi)(shi)信號層(ceng),中(zhong)間兩層(ceng)是(shi)(shi)(shi)接(jie)地(di)層(ceng)和(he)電源層(ceng),將接(jie)地(di)和(he)電源層(ceng)放在中(zhong)間。工業主板(ban)采(cai)用的(de)(de)是(shi)(shi)(shi)6層(ceng)以(yi)上PCB線路(lu)板(ban)設計(ji),其設計(ji)是(shi)(shi)(shi)為了加(jia)強主板(ban)的(de)(de)抗電磁干(gan)擾、電磁兼容能力(li),增強主板(ban)的(de)(de)穩定性(xing)等等。
4)工控主板的壽(shou)命
與商用主板2到(dao)3年(nian)使用壽(shou)(shou)命(ming)不(bu)同,大多(duo)數的工控(kong)主板壽(shou)(shou)命(ming)要求(qiu)在3年(nian)以上,部(bu)分高(gao)品質(zhi)的工控(kong)主板,使用壽(shou)(shou)命(ming)甚至達到(dao)5—7年(nian)。
一、保護功能
商(shang)用主板(ban)沒有提(ti)供的任(ren)何的保護功能;
工(gong)控主板通過特殊設計,在遇到死機等異常(chang)情況,可以實現看(kan)門狗自(zi)動重新啟動、防浪涌沖擊等功能(neng),全力(li)的(de)(de)保證系(xi)統在惡劣環境(jing)的(de)(de)高穩定(ding)性(xing)的(de)(de)要求。
二、工作溫度與散熱方式
商用主板基(ji)本(ben)只能在5℃~38℃之間的環境溫度中使用,對機(ji)構的散熱(re)要求低,講究外觀夠(gou)炫(xuan)夠(gou)酷。
工(gong)(gong)控主板可以在(zai)-20℃~60℃之間的(de)環境(jing)中穩(wen)定、無故障的(de)工(gong)(gong)作,甚至某些工(gong)(gong)業主板采(cai)用(yong)特殊(shu)的(de)寬溫(wen)設計(ji)(ji),溫(wen)度(du)(du)范圍可達-20度(du)(du)~70度(du)(du)。這對機(ji)構的(de)散(san)熱方案,散(san)熱效率都是一個嚴峻(jun)的(de)考(kao)驗(yan)。在(zai)工(gong)(gong)控主板機(ji)構的(de)散(san)熱設計(ji)(ji)上(shang),必須(xu)使(shi)用(yong)的(de)特殊(shu)散(san)熱設計(ji)(ji),甚至還采(cai)用(yong)全鋁制的(de)機(ji)構外(wai)殼,而且對CPU、南(nan)北橋和(he)硬盤等發熱大戶,進行(xing)特殊(shu)處理,保證(zheng)工(gong)(gong)控主板和(he)整機(ji)的(de)正常運行(xing)。
很多(duo)工控機(ji)由于在惡劣(lie)的(de)(de)應用(yong)環(huan)境(jing)下(例如潮濕、振動、多(duo)塵、輻射、高(gao)溫(wen)等(deng)等(deng)應用(yong)環(huan)境(jing))使用(yong),空氣中(zhong)的(de)(de)塵埃和鹽分,都會對主板(ban)造成(cheng)腐蝕,影響主板(ban)的(de)(de)正(zheng)常使用(yong),因此很多(duo)工控機(ji)有必要采用(yong)無風扇的(de)(de)機(ji)箱結構(gou),防止惡劣(lie)環(huan)境(jing)對系統造成(cheng)傷害。但是全密封無風扇的(de)(de)結構(gou),因為熱(re)源(yuan)的(de)(de)互相干擾,對主板(ban)的(de)(de)性能(neng)和穩定性的(de)(de)要求(qiu)比較高(gao),對機(ji)構(gou)的(de)(de)散(san)(san)熱(re)方式和散(san)(san)熱(re)效(xiao)能(neng)的(de)(de)要求(qiu)很高(gao),務必要將積熱(re)有效(xiao)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:
商用(yong)主板由于(yu)其(qi)更新換代的(de)(de)(de)速度比較快,且對(dui)產(chan)(chan)品(pin)的(de)(de)(de)穩定性及使用(yong)環境的(de)(de)(de)要(yao)求比較低(di),故此追(zhui)求的(de)(de)(de)是(shi)產(chan)(chan)品(pin)的(de)(de)(de)時效性,以(yi)及本(ben)身產(chan)(chan)品(pin)的(de)(de)(de)市場(chang)定位,對(dui)元(yuan)器件(jian)選擇要(yao)求上(shang)一般只需滿足系統(tong)運行2到3年(nian)的(de)(de)(de)使用(yong)壽命即可(ke)(3年(nian)之(zhi)后大(da)部分已經更新換代了(le)),元(yuan)器件(jian)的(de)(de)(de)用(yong)料上(shang)使用(yong)普通(tong)(tong)級別的(de)(de)(de)就可(ke)以(yi)了(le)。例如電(dian)容,商用(yong)主板都是(shi)大(da)量使用(yong)普通(tong)(tong)的(de)(de)(de)電(dian)解電(dian)容,一是(shi)出于(yu)商用(yong)市場(chang)產(chan)(chan)品(pin)的(de)(de)(de)使用(yong)考慮,二是(shi)為降低(di)主板的(de)(de)(de)成本(ben)考慮。
工控主板:
1)工控主板的(de)元器(qi)件
工(gong)控主板選料會(hui)選用經過長時間(jian),高(gao)要(yao)求驗(yan)證元(yuan)器(qi)件(jian),用以保證產品在(zai)惡(e)劣(lie)條件(jian)下高(gao)可靠(kao)性要(yao)求。例如(ru)工(gong)控主板的元(yuan)器(qi)件(jian)需(xu)要(yao)適(shi)應(ying)寬溫環境(-20℃~60℃),如(ru)固態電容器(qi),保證在(zai)惡(e)劣(lie)環境下(壽命期(qi)內(nei)永久開機、氣候(hou)惡(e)劣(lie)、潮濕、振(zhen)動、多塵、輻射、高(gao)溫等等)正常工(gong)作;主板元(yuan)器(qi)件(jian)需(xu)要(yao)耐高(gao)溫、抗潮濕等等。
2)工控(kong)主板的電容
工(gong)控(kong)主(zhu)板(ban)(ban)(ban)(ban)采(cai)用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)是高(gao)(gao)(gao)(gao)質(zhi)量的(de)(de)(de)(de)(de)(de)貼(tie)(tie)片式的(de)(de)(de)(de)(de)(de)固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、鉭、陶(tao)瓷電(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)(de)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),對其品(pin)質(zhi)、性能及壽(shou)命(ming)要(yao)求也遠高(gao)(gao)(gao)(gao)于商(shang)用(yong)(yong)(yong)(yong)產品(pin),現(xian)在的(de)(de)(de)(de)(de)(de)工(gong)控(kong)主(zhu)板(ban)(ban)(ban)(ban)都基本上(shang)采(cai)用(yong)(yong)(yong)(yong)固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),特(te)別中高(gao)(gao)(gao)(gao)端(duan)的(de)(de)(de)(de)(de)(de)工(gong)控(kong)主(zhu)板(ban)(ban)(ban)(ban)。商(shang)用(yong)(yong)(yong)(yong)主(zhu)板(ban)(ban)(ban)(ban)基本都是大(da)量采(cai)用(yong)(yong)(yong)(yong)針腳式的(de)(de)(de)(de)(de)(de)大(da)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),因為大(da)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)成(cheng)本低、容(rong)(rong)(rong)(rong)(rong)(rong)值大(da)一個可以頂多個貼(tie)(tie)片或坦電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)。從性質(zhi)來說,電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)穩定性不及鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、陶(tao)瓷電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)高(gao)(gao)(gao)(gao),壽(shou)命(ming)不及它(ta)們(men)(men)長,耐高(gao)(gao)(gao)(gao)溫程度不及它(ta)們(men)(men)好。貼(tie)(tie)片式電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比(bi)針腳式電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)更(geng)加穩定。從價格(ge)上(shang),鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比(bi)普通的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)要(yao)貴,且(qie)由于鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)量較小,使(shi)(shi)用(yong)(yong)(yong)(yong)在主(zhu)板(ban)(ban)(ban)(ban)上(shang)時,需(xu)要(yao)使(shi)(shi)用(yong)(yong)(yong)(yong)更(geng)多數量的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong),單單鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)成(cheng)本就是電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)幾十(shi)倍(bei),這也是導致工(gong)控(kong)主(zhu)板(ban)(ban)(ban)(ban)比(bi)商(shang)用(yong)(yong)(yong)(yong)主(zhu)板(ban)(ban)(ban)(ban)成(cheng)本價格(ge)高(gao)(gao)(gao)(gao)的(de)(de)(de)(de)(de)(de)原(yuan)因之一。隨著國產固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)廠家越(yue)來越(yue)多,固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)的(de)(de)(de)(de)(de)(de)價格(ge)的(de)(de)(de)(de)(de)(de)下降(jiang),現(xian)在的(de)(de)(de)(de)(de)(de)高(gao)(gao)(gao)(gao)檔次(ci)的(de)(de)(de)(de)(de)(de)商(shang)用(yong)(yong)(yong)(yong)主(zhu)板(ban)(ban)(ban)(ban)都在使(shi)(shi)用(yong)(yong)(yong)(yong)固(gu)態(tai)(tai)(tai)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)。
3)工控主板的PCB
商用主板(ban)采(cai)用的(de)(de)是(shi)(shi)(shi)4層(ceng)PCB設計(ji),一般的(de)(de)PCB線路(lu)板(ban)分有四(si)層(ceng),最上和(he)最下(xia)的(de)(de)兩層(ceng)是(shi)(shi)(shi)信號層(ceng),中(zhong)間兩層(ceng)是(shi)(shi)(shi)接(jie)地(di)層(ceng)和(he)電源層(ceng),將接(jie)地(di)和(he)電源層(ceng)放在中(zhong)間。工業主板(ban)采(cai)用的(de)(de)是(shi)(shi)(shi)6層(ceng)以(yi)上PCB線路(lu)板(ban)設計(ji),其設計(ji)是(shi)(shi)(shi)為了加(jia)強主板(ban)的(de)(de)抗電磁干(gan)擾、電磁兼容能力(li),增強主板(ban)的(de)(de)穩定性(xing)等等。
4)工控主板的壽(shou)命
與商用主板2到(dao)3年(nian)使用壽(shou)(shou)命(ming)不(bu)同,大多(duo)數的工控(kong)主板壽(shou)(shou)命(ming)要求(qiu)在3年(nian)以上,部(bu)分高(gao)品質(zhi)的工控(kong)主板,使用壽(shou)(shou)命(ming)甚至達到(dao)5—7年(nian)。