PCB DFT

Ongorora nyika yePCB DFT uye gadzirisa mabhodhi ako edunhu kuti aedze, kudzikisira mutengo, uye kuvandudzwa kwemhando.

DFT
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PCB DFT Service

PCB DFT inomirira "Design for Testability." Iyo seti yemaitiro uye matekiniki anoshandiswa panguva yePCB dhizaini dhizaini kuve nechokwadi chekuti maPCB anogadzirwa anogona kuyedzwa zvinobudirira uye nemazvo kushanda uye kunaka. Chinangwa chikuru chePCB DFT ndechekuwedzera kuyedzwa uye kugona kuona kukanganisa kwePCB, pakupedzisira kuderedza nguva uye simba rinodiwa pakuyedza nekugadzirisa matambudziko.

PCB DFT (Design for Testability) masevhisi anoreva masevhisi ehunyanzvi anotarisa pakugadzira akadhindwa edunhu mabhodhi (PCBs) aine bvunzo mupfungwa. Aya masevhisi anovavarira kuona kuti PCB dhizaini inogona kuyedzwa zvakanaka uye kusimbiswa panguva yekugadzira uye yekuyedza zvikamu. Heano mapoinzi akakosha ePCB DFT masevhisi:

  • Dhizaini Yekuedzwa (DFT): Iyo yakakosha yePCB DFT masevhisi inosanganisira kugadzira nekuyedza mupfungwa. Izvi zvinoreva kufunga nezvekuyedzwa uye kusimbiswa zvinodiwa panguva yePCB dhizaini chikamu chekugonesa kuyedza kunoshanda panguva yekugadzira.
  • Kuwedzeredzwa Kwekupinda Muedzo: masevhisi ePCB DFT anosanganisira zvinhu zvakaita semapoinzi ebvunzo, maseketi ebvunzo, uye nzvimbo dzekuyedza muPCB dhizaini, zvichiita kuti zvive nyore kuyedza zvakasiyana-siyana zvePCB panguva dzinotevera dzekuyedza. Izvi zvinobatsira kuziva zvinogona kukanganisa uye matambudziko.
  • Yakaderedzwa Manufacturing Costs: Nekufunga bvunzo zvinodiwa muPCB dhizaini, zvinova nyore kuona matambudziko panguva yekugadzira, kuderedza huwandu hwezvakaremara zvigadzirwa uye kudzikisa mutengo wekugadzira.
  • Yakavandudzwa Chigadzirwa Hunhu: PCB DFT masevhisi anobatsira pakuona kuti maPCB anoshanda nemazvo panguva yekuyedzwa mushure mekugadzirwa. Izvi zvinowedzera kunaka uye kuvimbika kwechigadzirwa chekupedzisira.
  • Yakagadzirirwa Kuedza Matanho: PCB DFT masevhisi anobvumira kugadziridzwa kwemaitiro ekuyedza zvichienderana nezvinodiwa zvepurojekiti uye kuoma kwePCB. Izvi zvinoreva kusarudza nzira dzekuyedza dzakakodzera uye maturusi epurojekiti yega yega.
  • Kudyidzana neVagadziri: masevhisi ePCB DFT anowanzo sanganisira kubatana nevagadziri vePCB kana vanopa magungano kuti ive nechokwadi chekuti madhizaini ePCB anogona kuitwa mukugadzira uye kuyedzwa kwakakodzera.

Muchidimbu, masevhisi ePCB DFT anovavarira kukwidziridza madhizaini ePCB kuitira kuti zvive nyore uye zvakanyatsoita ongororo yekushanda uye mhando panguva yekugadzira uye yekuyedza zvikamu. Izvi zvinobatsira kuderedza mitengo, kuvandudza mhando, uye kukurumidza nguva-ku-musika kune zvigadzirwa. Naizvozvo, kufunga masevhisi ePCB DFT kazhinji isarudzo yehungwaru, kunyanya kune yakaoma zvigadzirwa zvemagetsi.

Kukosha kwePCB DFT

PCB DFT chirango chakawanda chinodarika mutengo wemukati, kuvimbiswa kwemhando, kugona nguva, uye kugadzirisa. Kukanganisa kwayo kwakadzama pakugadzirwa kwePCB kunosimbisa basa rayo rakakosha mukugadzira zvemagetsi zvemazuva ano, uko kurongeka, kuvimbika, uye nguva-kumusika kwakakosha. PCB DFT, saka, chishandiso chakakosha kune vagadziri vanoyedza kuendesa emhando yepamusoro zvigadzirwa zvine hunyanzvi uye kugona.

Kuderedza Mutengo uye Kugadzirisa

PCB DFT inoita basa rakakosha mukudzikamisa nekugadzirisa mitengo mukati mePCB yese yekugadzira kutenderera. Nekukurumidza kuziva uye kugadzirisa zvakakanganisika mumatanho ekutanga ekugadzira, zvinodzikisira zvakanyanya zvinodiwa zvekugadzirisa zvinodhura, kutsiva kwezvikamu, kana kukwenya mabheji ese ePCB. Izvi zvinoturikira kukuchengetedza kwakakura muzvinhu, vashandi, uye mari yekushandisa.

Yakakwidziridzwa Yekusimbisa Hunhu

Simbiso yemhando yepamusoro inomira sekona yePCB DFT. Inofambisa kushandiswa kweakaomesesa ekuyedza mapuroteni, ichisimudzira yakasimba ecosystem yekuongorora kuvimbika uye kuvimbika kwechigadzirwa chekupedzisira. Nekuda kweizvozvo, mukana wekutumira maPCB asina kukanganisa kune vatengi wakaderedzwa zvakanyanya. Izvi hazvingo chengetedza mukurumbira wemugadziri asiwo zvinosimbisa kuvimba kwevatengi.

Kuwedzera kweNguva-ku-Musika

Kushanda kwenguva chinhu chakakosha munzvimbo inokwikwidza zvikuru yekugadzirwa kwemagetsi. PCB DFT inokwenenzvera maitiro ekuyedza, ichigonesa kukurumidza uye nekungwarira kusimbiswa kwePCBs. Nekuda kweizvozvo, inomhanyisa kutenderera kwese kwekugadzirwa kwechigadzirwa, zvichisvika nekukurumidza-kumusika-kumusika kwemidziyo yemagetsi. Iyi agile yekupindura kune zvinodiwa pamusika inogona kuve inoshandura-mutambo mukugara pamberi pevakwikwidzi.

Tailored Testing Strategies

Iko kuita kwakasiyana-siyana kwePCB DFT kunoratidzirwa nekugona kwayo kugadzika nzira dzekuyedza dzakagadzirirwa. Iyo inochinjika isina musono kune yakasarudzika intricacies uye zvinodiwa zvega yega PCB dhizaini. PCB DFT inogona kugadziridzwa zvakanaka kugadzirisa matambudziko chaiwo, kuve nechokwadi chekuti nzira dzakanyanya dzekuyedza dzinoshandiswa. Iyi yakarongedzerwa nzira inowedzera kushanda kwekuyedza uye inova nechokwadi chekuti kunyangwe madhizaini akaomarara anosimbiswa.

Flying Probe vs. Mubhedha weNails Testing muPCB DFT

Flying-Probe-Testing-scaled

Flying Probe Test

Iyo Flying Probe Bvunzo inzira isiri-invasive in-circuit bvunzo (ICT) inoshandiswa kuyera yakavhurika/mapfupi maseketi, hunhu hwezvinhu zvinongoitika, uye kuenderera. Muedzo uyu unowanzo shandiswa kune prototypes uye yakaderera-vhoriyamu yekugadzira inomhanya. Izvo zvinosanganisira kushandiswa kweotomatiki bvunzo michina (ATE) ine inofambiswa probes iyo inobatana neyekuedzwa mapoinzi paPCB.
Iyo Flying Probe Bvunzo inopa mukana wekusada yakazvitsaurira bvunzo gadziriso, iyo inoderedza mutengo uye nguva zvine chekuita nekuvandudzwa kwegadziriro. Iwo mapoinzi ebvunzo anowanzo kugadzirwa muPCB dhizaini, uye iyo ATE sisitimu yakarongerwa kufambisa maprobe kunzvimbo dzakakodzera dzebvunzo uye kuita zviyero zvinodiwa.

Bed-of-Nails-Test

Mubhedha weNails Test

The Bed of Nails Test, inozivikanwawo seye-in-circuit test (ICT) kana pini-pini bvunzo, bvunzo yakazara uye yakadzama kana ichienzaniswa neiyo Flying Probe Test. Inosanganisira kushandiswa kweyakazvitsaurira bvunzo yekumisikidza iyo ine gidhi yemapini akaremerwa echitubu, ayo anobatana neakananga mapoinzi ebvunzo paPCB.
Mubhedha Wezvipikiri Muedzo unowanzo shandirwa pakati nepamusoro-vhoriyamu yekugadzira inomhanya. Iyo yekuyedza-yakavakirwa-yakavakirwa kuti ienderane nePCB dhizaini, iine mapini akaremerwa muchirimo akamisikidzwa kuti abatane neakatemerwa bvunzo mapoinzi. Iyi nzira yekuyedza inobvumira kuyerwa kweakasiyana ma paramita, anosanganisira analog uye masaini edhijitari, uye anogona kupa ruzivo rwakadzama nezve mashandiro uye mashandiro ePCB.

Ose ari maviri Flying Probe Test uye Bed yeNails Test maturusi akakosha mukuyedzwa kwePCB, uye sarudzo pakati pawo inoenderana nezvinhu zvakaita sehuwandu hwekugadzira, bvunzo yekuvhara zvinodiwa, uye kufunga kwebhajeti. Vagadziri vePCB vanofanirwa kushanda padhuze nevagadziri vekondirakiti kuti vaone nzira yekuyedza yakanyatsoenderana nezvinodiwa zvepurojekiti.

PCB DFT yeFuctional Circuit Testing

Highleap's PCB Gungano Dhizaini Yekuyedza (DFT) masevhisi anosanganisira nzira yakazara yekuve nechokwadi chekushanda uye mhando yeakadhindwa edunhu bhodhi magungano (PCBAs). Kuzvipira kwedu kune kugona mukuyedzwa kwePCB kunobva kune akanakisa maitiro eese ari maviri Functional Circuit Testing (FCT) uye In-Circuit Testing (ICT).

DFT yeFuctional Circuit Testing

FCT inomiririra nzira dema-bhokisi, yakanangana nekubuda kwese uye kushanda kwePCBs ako. Inosimbisa maitiro ako ekuyedza kwete kuomesesa bhodhi ruzivo. Paunosarudza FCT mupurojekiti yako, isu tinotanga maitiro panguva yekutora chikamu. Isu tinokukurudzira kuti upe yakanyorwa yekuyedza maitiro, ayo isu tinoongorora zvine hungwaru kuti uone mutengo uye yekutungamira nguva inodiwa. Yakakwenenzverwa FCT maitiro anogona kusanganisira matanho akareruka akadai se:

  • Kugadzirisa magetsi.
  • Kushandisa magetsi.
  • Kusimbisa mameseji chaiwo pachiratidziro kana kuvhurwa kweakatemerwa maLED.

Vamwe vatengi vanosanganisa maLED mumagadzirirwo avo zvakajeka kuratidza mabatiro ekushanda zvakanaka panzvimbo dzakati dzebhodhi. Kunyange iyi nzira inogona kushandisa imwe nzvimbo yebhodhi, inorerutsa maitiro ekuyedza uye inoderedza kudiwa kweICT yakakura.

DFT yeIn-Circuit Testing

ICT, kune rumwe rutivi, inotora nzira chena-bhokisi. Mainjiniya edu ekuyedza anotarisisa zvine hungwaru ega voltage uye mazinga azvino paPCB dzakapedzwa, achigona kuita nhanho-ne-nhanho firmware maitiro. ICT inoongorora zvakadzama kupfuura FCT, inoda nguva yakawanda uye zviwanikwa. Nekudaro, inokunda pakuziva zvingangoitika paPCB pasi kune ega ega zvikamu.

ICT inonyanya kushanda kune Prototype PCB Gungano mapurojekiti, uko yakaderera kurongeka huwandu hunodzora kukanganisa kwekuwedzera nguva dzekuyedzwa. Kuti ukwidze maodha epamusoro-soro eICT, unogona kugadzira chigadziriso chekuyedza. Iyi gadziriso inokwenenzvera kuyedza nekutibvumira kukurumidza kuyedza PCB magungano, akafanana neMubhedha Wezvipikiri PCB Kuedzwa kwemaPCB asina chinhu. Neimwe nzira, kusanganisira yakatemerwa bvunzo mapoinzi paPCB gungano inorerutsa maitiro ekuongorora uye inovandudza kushanda kwayo.

KuHighleap, tinoisa pamberi pemhando uye mashandiro mukati mePCB Gungano redu. Matanho akawanda ekuyedza, anosanganisira E-Test, Visual Inspection, AOI, uye AXI yezvikamu zvisingaite-lead, chikamu chemaitiro edu ekuyedza. Pamusoro pezvo, vatengi vedu vane mukana wekukumbira dzimwe nzira dzekuyedza, kusanganisira ICT neFCT, zvichienderana nezvavanoda.

Yedu yakazvipira hunyanzvi sevhisi timu inovimbisa kuti zvinokunetsa zvinogadziriswa zvizere. Isu tinoongorora zvine hungwaru maGerber uye bhiri rezvinhu (BOM) mafaera eDesign for Manufacturing (DFM) uye DFT cheki. Kukurukurirana nechikwata chedu hakuna musono, iine akawanda anowanikwa chiteshi, kusanganisira email, mafomu epamhepo, uye zvakanamirwa. Ndokumbira utiudze zvinokunetsa, uye isu tichakurumidza kupa mhinduro yakakodzera zvinoenderana neyako yakasarudzika PCB gungano zvinodiwa.