Za ntchito zothandiza ndi ntchito zatsopano za PCBA

Zothandiza
Kumapeto kwa zaka za m'ma 1990 pamene ambiri amamangabolodi losindikizidwaMayankho adaperekedwa, matabwa osindikizidwa omangika adagwiritsidwanso ntchito mokulira mpaka pano.Ndikofunikira kupanga njira yoyesera yolimba yamisonkhano ikuluikulu, yosindikizidwa kwambiri (PCBA, msonkhano wachigawo wosindikizidwa) kuti zitsimikizire kutsata ndi magwiridwe antchito pamapangidwe.Kuwonjezera pa kumanga ndi kuyesa misonkhano yovutayi, ndalama zomwe zimayikidwa mu zamagetsi zokha zikhoza kukhala zambiri, mwina kufika $25,000 pa unit ikayesedwa.Chifukwa cha kukwera mtengo koteroko, kupeza ndi kukonza mavuto a msonkhano ndi sitepe yofunika kwambiri tsopano kuposa kale.Misonkhano yamasiku ano yovuta kwambiri ndi pafupifupi mainchesi 18 ndi zigawo 18;kukhala ndi zigawo zoposa 2,900 pamwamba ndi pansi;muli 6,000 madera ozungulira;ndikukhala ndi ma solder opitilira 20,000 oti muyese.

polojekiti yatsopano
Zatsopano zimafuna ma PCBA ochulukirapo, okulirapo komanso ma CD olimba.Zofunikira izi zimatilepheretsa kupanga ndi kuyesa mayunitsiwa.Kupita patsogolo, matabwa akuluakulu okhala ndi zigawo zing'onozing'ono ndi ma node apamwamba apitirira.Mwachitsanzo, pulani imodzi yomwe ikukokedwa pa board board ili ndi ma node pafupifupi 116,000, zida zopitilira 5,100, ndi zolumikizira zopitilira 37,800 zomwe zimafunikira kuyesedwa kapena kutsimikizika.Gawo ili lilinso ndi BGAs pamwamba ndi pansi, ndi BGAs pafupi wina ndi mzake.Kuyesa bolodi la kukula uku ndi zovuta kugwiritsa ntchito bedi lachikhalidwe la singano, ICT njira imodzi sizingatheke.
Kuchulukitsa PCBA zovuta ndi kachulukidwe njira kupanga, makamaka kuyezetsa, si vuto latsopano.Pozindikira kuti kuwonjezera kuchuluka kwa mapini oyesera muzoyeserera za ICT sinali njira yoti tipitirire, tidayamba kuyang'ana njira zina zotsimikizira dera.Tikayang'ana kuchuluka kwa ma probe omwe amaphonya pa miliyoni, tikuwona kuti pa 5000 node, zolakwika zambiri zomwe zapezeka (zochepera 31) zitha kukhala chifukwa chazovuta zolumikizana m'malo mopanga zolakwika zenizeni (Table 1).Chifukwa chake tidayamba kutsitsa nambala ya pini zoyesa, osati m'mwamba.Komabe, mtundu wa njira zathu zopangira zimawunikidwa ku PCBA yonse.Tinaganiza kuti kugwiritsa ntchito ICT yachikhalidwe pamodzi ndi X-ray tomography inali njira yabwino.