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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app污下載:深圳市澤創偉業科技有限公司
為什(shen)么工(gong)控主(zhu)板的價格比商(shang)用(yong)主(zhu)板高(gao)?工(gong)控主(zhu)板相(xiang)(xiang)對商(shang)用(yong)主(zhu)板好在(zai)哪(na)?相(xiang)(xiang)信(xin)很多(duo)用(yong)戶朋友都有這個疑(yi)問,下面(mian)我們就從主(zhu)板元器件的用(yong)料與設(she)計(ji)方面(mian)分(fen)析下:
商用主板:
商(shang)用(yong)主(zhu)板(ban)由于其(qi)更新(xin)(xin)換代的(de)(de)(de)(de)(de)速度比較快,且對產(chan)(chan)品(pin)(pin)(pin)的(de)(de)(de)(de)(de)穩定(ding)性(xing)及使(shi)用(yong)環境的(de)(de)(de)(de)(de)要求比較低,故此追求的(de)(de)(de)(de)(de)是(shi)產(chan)(chan)品(pin)(pin)(pin)的(de)(de)(de)(de)(de)時(shi)效性(xing),以及本(ben)(ben)身產(chan)(chan)品(pin)(pin)(pin)的(de)(de)(de)(de)(de)市場定(ding)位(wei),對元(yuan)器(qi)件(jian)選擇要求上一(yi)(yi)般只需滿足(zu)系統運行2到3年的(de)(de)(de)(de)(de)使(shi)用(yong)壽(shou)命即可(ke)(3年之后大部分已經更新(xin)(xin)換代了(le)),元(yuan)器(qi)件(jian)的(de)(de)(de)(de)(de)用(yong)料上使(shi)用(yong)普(pu)(pu)通級(ji)別的(de)(de)(de)(de)(de)就可(ke)以了(le)。例如電(dian)(dian)容,商(shang)用(yong)主(zhu)板(ban)都(dou)是(shi)大量使(shi)用(yong)普(pu)(pu)通的(de)(de)(de)(de)(de)電(dian)(dian)解(jie)電(dian)(dian)容,一(yi)(yi)是(shi)出于商(shang)用(yong)市場產(chan)(chan)品(pin)(pin)(pin)的(de)(de)(de)(de)(de)使(shi)用(yong)考慮,二是(shi)為降低主(zhu)板(ban)的(de)(de)(de)(de)(de)成本(ben)(ben)考慮。
工控主(zhu)板:
1)工控主板(ban)的元器件(jian)
工控主板選料會(hui)選用(yong)經過長時間(jian),高(gao)(gao)要(yao)求驗證元(yuan)器(qi)(qi)件(jian),用(yong)以保證產品在(zai)惡劣(lie)條(tiao)件(jian)下(xia)高(gao)(gao)可靠性要(yao)求。例(li)如工(gong)控主板的元(yuan)器(qi)(qi)件(jian)需要(yao)適(shi)應寬溫(wen)環境(jing)(jing)(-20℃~60℃),如固態電容器(qi)(qi),保證在(zai)惡劣(lie)環境(jing)(jing)下(xia)(壽命(ming)期內永(yong)久開(kai)機、氣候惡劣(lie)、潮濕(shi)、振(zhen)動、多塵、輻射(she)、高(gao)(gao)溫(wen)等等)正常工(gong)作(zuo);主板元(yuan)器(qi)(qi)件(jian)需要(yao)耐(nai)高(gao)(gao)溫(wen)、抗(kang)潮濕(shi)等等。
2)工(gong)控主板的電容(rong)
工控(kong)主(zhu)(zhu)(zhu)板(ban)(ban)采用(yong)的(de)(de)(de)是(shi)(shi)高(gao)(gao)(gao)質量(liang)的(de)(de)(de)貼片(pian)式的(de)(de)(de)固態電(dian)(dian)(dian)容(rong)(rong)(rong)、鉭、陶(tao)瓷電(dian)(dian)(dian)容(rong)(rong)(rong),即使使用(yong)的(de)(de)(de)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong),對其品(pin)質、性能及(ji)壽命要求(qiu)也遠高(gao)(gao)(gao)于(yu)(yu)商(shang)用(yong)產品(pin),現在的(de)(de)(de)工控(kong)主(zhu)(zhu)(zhu)板(ban)(ban)都基本上(shang)采用(yong)固態電(dian)(dian)(dian)容(rong)(rong)(rong),特(te)別中(zhong)高(gao)(gao)(gao)端的(de)(de)(de)工控(kong)主(zhu)(zhu)(zhu)板(ban)(ban)。商(shang)用(yong)主(zhu)(zhu)(zhu)板(ban)(ban)基本都是(shi)(shi)大量(liang)采用(yong)針(zhen)腳(jiao)式的(de)(de)(de)大電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong),因(yin)為大電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)成(cheng)本低、容(rong)(rong)(rong)值(zhi)大一個可(ke)以頂多(duo)個貼片(pian)或坦電(dian)(dian)(dian)容(rong)(rong)(rong)。從(cong)(cong)性質來(lai)說,電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)穩定性不及(ji)鉭電(dian)(dian)(dian)容(rong)(rong)(rong)、陶(tao)瓷電(dian)(dian)(dian)容(rong)(rong)(rong)高(gao)(gao)(gao),壽命不及(ji)它(ta)們長,耐高(gao)(gao)(gao)溫(wen)程度(du)不及(ji)它(ta)們好。貼片(pian)式電(dian)(dian)(dian)容(rong)(rong)(rong)比針(zhen)腳(jiao)式電(dian)(dian)(dian)容(rong)(rong)(rong)更加穩定。從(cong)(cong)價格上(shang),鉭電(dian)(dian)(dian)容(rong)(rong)(rong)比普通的(de)(de)(de)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)要貴,且由于(yu)(yu)鉭電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)量(liang)較小(xiao),使用(yong)在主(zhu)(zhu)(zhu)板(ban)(ban)上(shang)時,需要使用(yong)更多(duo)數量(liang)的(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong),單(dan)單(dan)鉭電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)成(cheng)本就是(shi)(shi)電(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)幾十倍,這(zhe)也是(shi)(shi)導致工控(kong)主(zhu)(zhu)(zhu)板(ban)(ban)比商(shang)用(yong)主(zhu)(zhu)(zhu)板(ban)(ban)成(cheng)本價格高(gao)(gao)(gao)的(de)(de)(de)原因(yin)之一。
3)工控主板的(de)PCB
商(shang)用(yong)主(zhu)板(ban)(ban)采(cai)用(yong)的(de)(de)是4層(ceng)(ceng)PCB設(she)(she)計,一般的(de)(de)PCB線(xian)路(lu)板(ban)(ban)分有(you)四(si)層(ceng)(ceng),最(zui)上(shang)和(he)(he)最(zui)下的(de)(de)兩(liang)層(ceng)(ceng)是信(xin)號(hao)層(ceng)(ceng),中間兩(liang)層(ceng)(ceng)是接地層(ceng)(ceng)和(he)(he)電(dian)源(yuan)層(ceng)(ceng),將(jiang)接地和(he)(he)電(dian)源(yuan)層(ceng)(ceng)放在中間。工業主(zhu)板(ban)(ban)采(cai)用(yong)的(de)(de)是6層(ceng)(ceng)以上(shang)PCB線(xian)路(lu)板(ban)(ban)設(she)(she)計,其(qi)設(she)(she)計是為了加強主(zhu)板(ban)(ban)的(de)(de)抗電(dian)磁(ci)干擾(rao)、電(dian)磁(ci)兼容能力,增強主(zhu)板(ban)(ban)的(de)(de)穩定(ding)性等等。
4)工(gong)控主板的壽命
與商用主(zhu)板2到(dao)(dao)3年(nian)使用壽命(ming)不同,大(da)多數的工(gong)控主(zhu)板壽命(ming)要求在(zai)3年(nian)以上,部分高品(pin)質的工(gong)控主(zhu)板,使用壽命(ming)甚(shen)至達(da)到(dao)(dao)5—7年(nian)。