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為什么工控主板的價格比商用主板高?
2016-09-25 14:06:19 新聞來源:草莓視頻污片app:深圳市澤創偉業科技有限公司
為什么工(gong)控(kong)主(zhu)(zhu)板的價格比商(shang)用(yong)(yong)主(zhu)(zhu)板高?工(gong)控(kong)主(zhu)(zhu)板相對商(shang)用(yong)(yong)主(zhu)(zhu)板好在(zai)哪?相信很多用(yong)(yong)戶朋友都(dou)有這個疑問,下(xia)面我(wo)們就從主(zhu)(zhu)板元器件的用(yong)(yong)料與設計(ji)方面分(fen)析下(xia):
商用主板:
商用(yong)主(zhu)板(ban)(ban)由(you)于其更新換代的(de)(de)(de)速度比(bi)較(jiao)快,且(qie)對產品的(de)(de)(de)穩定性及使(shi)(shi)用(yong)環境的(de)(de)(de)要求(qiu)比(bi)較(jiao)低,故此追求(qiu)的(de)(de)(de)是產品的(de)(de)(de)時效(xiao)性,以(yi)及本身產品的(de)(de)(de)市場定位,對元器件選擇要求(qiu)上(shang)一般只需滿足系統運(yun)行2到(dao)3年的(de)(de)(de)使(shi)(shi)用(yong)壽命即可(ke)(3年之后大部分已經更新換代了(le)(le)),元器件的(de)(de)(de)用(yong)料上(shang)使(shi)(shi)用(yong)普(pu)通級別的(de)(de)(de)就可(ke)以(yi)了(le)(le)。例如電(dian)容,商用(yong)主(zhu)板(ban)(ban)都是大量(liang)使(shi)(shi)用(yong)普(pu)通的(de)(de)(de)電(dian)解電(dian)容,一是出于商用(yong)市場產品的(de)(de)(de)使(shi)(shi)用(yong)考慮,二是為降(jiang)低主(zhu)板(ban)(ban)的(de)(de)(de)成本考慮。
工(gong)控主板(ban):
1)工控主(zhu)板的元器(qi)件
工控主板選(xuan)料會選(xuan)用(yong)經(jing)過長時間,高(gao)要求(qiu)驗證元器(qi)件(jian),用(yong)以(yi)保(bao)證產品在(zai)惡劣(lie)條件(jian)下高(gao)可靠性要求(qiu)。例如工控(kong)主板(ban)的元器(qi)件(jian)需要適應(ying)寬溫(wen)環境(jing)(-20℃~60℃),如固態電容器(qi),保(bao)證在(zai)惡劣(lie)環境(jing)下(壽命期內永久開(kai)機、氣候惡劣(lie)、潮濕、振動(dong)、多塵、輻(fu)射(she)、高(gao)溫(wen)等(deng)等(deng))正常工作(zuo);主板(ban)元器(qi)件(jian)需要耐高(gao)溫(wen)、抗潮濕等(deng)等(deng)。
2)工控(kong)主板的電(dian)容
工控主(zhu)板(ban)(ban)采用(yong)(yong)的是高(gao)質量的貼片(pian)式(shi)的固態電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)、鉭、陶瓷(ci)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong),即使(shi)使(shi)用(yong)(yong)的電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong),對(dui)其(qi)品質、性(xing)能及壽(shou)命(ming)要(yao)求也(ye)遠高(gao)于商(shang)用(yong)(yong)產品,現在的工控主(zhu)板(ban)(ban)都基(ji)本(ben)上(shang)采用(yong)(yong)固態電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong),特別中高(gao)端(duan)的工控主(zhu)板(ban)(ban)。商(shang)用(yong)(yong)主(zhu)板(ban)(ban)基(ji)本(ben)都是大量采用(yong)(yong)針腳式(shi)的大電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong),因為大電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)成本(ben)低、容(rong)(rong)(rong)(rong)(rong)(rong)(rong)值大一個可以頂(ding)多個貼片(pian)或(huo)坦電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)。從性(xing)質來說(shuo),電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)穩定(ding)性(xing)不及鉭電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)、陶瓷(ci)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)高(gao),壽(shou)命(ming)不及它(ta)們長,耐高(gao)溫程(cheng)度(du)不及它(ta)們好。貼片(pian)式(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)比針腳式(shi)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)更加穩定(ding)。從價格(ge)上(shang),鉭電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)比普通的電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)要(yao)貴,且(qie)由于鉭電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)量較小(xiao),使(shi)用(yong)(yong)在主(zhu)板(ban)(ban)上(shang)時,需要(yao)使(shi)用(yong)(yong)更多數量的電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong),單(dan)單(dan)鉭電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的成本(ben)就是電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的幾十倍,這也(ye)是導致(zhi)工控主(zhu)板(ban)(ban)比商(shang)用(yong)(yong)主(zhu)板(ban)(ban)成本(ben)價格(ge)高(gao)的原因之一。
3)工(gong)控主板的PCB
商用(yong)(yong)主板(ban)采(cai)用(yong)(yong)的(de)是4層PCB設(she)計(ji)(ji)(ji),一般的(de)PCB線(xian)路板(ban)分(fen)有四層,最上(shang)和最下(xia)的(de)兩(liang)層是信號層,中間(jian)兩(liang)層是接地層和電(dian)(dian)源(yuan)層,將接地和電(dian)(dian)源(yuan)層放(fang)在中間(jian)。工業主板(ban)采(cai)用(yong)(yong)的(de)是6層以(yi)上(shang)PCB線(xian)路板(ban)設(she)計(ji)(ji)(ji),其設(she)計(ji)(ji)(ji)是為(wei)了加(jia)強主板(ban)的(de)抗電(dian)(dian)磁干擾、電(dian)(dian)磁兼容能力,增強主板(ban)的(de)穩(wen)定性等(deng)等(deng)。
4)工控主板(ban)的壽命(ming)
與商用主(zhu)板2到3年使用壽命(ming)不同,大多數的工控(kong)主(zhu)板壽命(ming)要求在3年以上,部分高品質的工控(kong)主(zhu)板,使用壽命(ming)甚至達到5—7年。