8 Yakakurumbira PCB Kuedza Nzira muPCB Kugadzira

Basa Rakakosha Rokuedzwa muPCB Kugadzira uye Gungano

PCBs zvinhu zvakakosha mumaindasitiri, kubva kumagetsi evatengi nemidziyo kusvika kune aerospace masisitimu uye zvigadzirwa zvekurapa. Ivo vanopa hwaro hwekumisikidza uye kubatanidza zvinhu zvemagetsi vachishandisa conductive copper traces yakamisikidzwa pane insulate substrate.PCB bvunzo inosimbisa maitiro ekugadzira kuti aone kukanganisa kwezvinhu, kugadzirwa, kuisirwa chikamu, uye soldering.

Tichifunga nezvechinangwa chakakosha chePCB, kuyedza kwakazara panguva yekugadzira, kugadzira, uye kuunganidza kwakakosha pakuona mashandiro akavimbika mumamiriro akasiyana-siyana ekushanda. Chinyorwa chino chinopa ruzivo rwakadzama rwematekiniki makuru ekuongorora PCB, maparameter akaongororwa, kugona kuona zvikanganiso uye nzira dzakanakisisa dzinokurudzirwa. Heino tarisiro yakadzama yekukosha kwekuyedza mukugadzira nekuunganidza PCB:

1. Quality Panga: MaPCB ari pakati pemagetsi masisitimu, uye chero hurema kana nyaya muPCB inogona kutungamirira kukutadza kwehurongwa kana kusashanda zvakanaka. Kuedza kunobatsira kuona nekugadzirisa zvinhu zvakadaro maPCB asati abatanidzwa muzvigadzirwa zvekupedzisira, kuve nechokwadi chepamusoro-soro uye yakavimbika kuita.
2. Kuderedza Mutengo: Kuona uye kugadzirisa zvakakanganisika pakutanga kwemaitiro ekugadzira zvinodhura zvakanyanya pane kuzviwana nekuzvigadzirisa mushure mekunge zvigadzirwa zvaunganidzwa. Kuedza kunobatsira kuderedza kushanda patsva, zvimedu, uye zvichemo zvewaranti, nokudaro zvichichengetedza zvese nguva nemari.
3. kuvimbika: MaPCB anoshandiswa mumhando dzakasiyana siyana dzekushandisa, kusanganisira dzakakosha masisitimu senge michina yekurapa uye midziyo yemuchadenga. Kukundikana mumashandisirwo akadaro kunogona kuve nemhedzisiro yakaoma, zvichiita kuti kuvimbika kuve kwakanyanya. Kuedza kunobatsira kuona kuti maPCB anosangana nezvinodiwa zvekuvimbika uye anogona kuita pasi pemamiriro akanyanya.
4. Defect Detection: Kuongororwa kwePCB kunosanganisira maitiro akasiyana-siyana ekuona akaremara senge zvikabudura, kuvhura, nyaya dzekutengesa, chikamu chisipo, nezvimwe. Izvi zvinokanganisa zvinogona kuitika panguva yekugadzira, uye kunyatsoyedzwa kwakakosha kuti uzvione uye ugadzirise.
5. Process Validation: Kuongororwa kwePCB hakusi kwekutsvaga kukanganisa chete asiwo kusimbisa maitiro ese ekugadzira. Inovimbisa kuti maitiro anoshandiswa etching, kuchera, soldering, uye chikamu chekuisa anowirirana uye anosangana nezvinodiwa.
6. Functional Verification: Kunze kwekuremara kwemuviri, maPCB anofanirwa kutariswa kuti ave nechokwadi chekuti anoita sezvaanotarisirwa. Izvi zvinosanganisira kuyedza kubatana kwemagetsi, kutendeseka kwechiratidzo, uye kushanda kwezvikamu paPCB.
7. Kwayakaedzwa Kwayedza: Zvichienderana nekushandiswa, maPCB anogona kuve akaiswa kune akasiyana siyana mamiriro ekunze, senge tembiricha yakanyanyisa, humidity, uye vibration. Kuedza kwezvakatipoteredza kunobatsira kuona kuti maPCB anogona sei kumira nemamiriro aya pasina kuderedzwa mukuita.

Zvinokosha zvePCB Kuedzwa

Kuedzwa kwePCB kunoreva maitiro ekusimbisa anoshandiswa panguva yekugadzira kuti aone kana paine zvikanganiso muzvinhu, matekiniki ekugadzira, kuiswa kwezvikamu uye kuvimbika kwekusungirirwa. Kuenderera mberi kwemagetsi, kudzora impedance uye kuputira dielectric ndizvo zvinhu zvakajairika zvinoongororwa.

Kuongororwa kwakakwana kunopa mabhenefiti akawanda:

• Inovandudza kuvimbika kwemunda nekuona zvikanganiso nekukurumidza
• Inoderedza kugadzira uye mari yewaranti
• Inomhanyisa kugadzirwa kwechigadzirwa kuburikidza nekukurumidza dhizaini-yedzo yekudzokorora
• Inova nechokwadi chekutevedzwa kwemitemo kune mishoni-yakakosha application

Iko kuwedzera kuri kuwedzera kuoma kwePCBs yemazuva ano inoita yakarongwa kuyedzwa sepa IPC zviyero zvakakosha kune mhando uye kuvimbika. Kuedza otomatiki ikozvino kunopa pamusoro pe98% kufukidzwa kuburikidza nemarobhoti chaiwo uye AI-powered mufananidzo kuzivikanwa.

Yakakosha PCB Kukanganisa uye Kukundikana Modes

Kugadzirwa kweakadhindwa edunhu mabhodhi (PCBs) kunosanganisira kungwarira maitiro, uye chero kutsauka kunogona kutungamira kune hurema hunokanganisa kushanda uye kuvimbika kwechigadzirwa chekupedzisira. Heano kutarisisa kwakadzama kweakajairwa PCB kukanganisa uye kutadza modes:

Zvakajairwa PCB Zvikanganiso Zvakaonekwa Panguva Yekugadzira Kuedzwa:

1. Dimensional Deviations: Izvi zvinosanganisira mabhodhi kuderera kana kuwedzera kupfuura kushivirira kwavo kwakatarwa, izvo zvinogona kutungamira mukumisikidzwa kwezvikamu uye zviteshi.
2. Lamination Issues: Premature delamination inogona kufumura mitsetse yemhangura, zvichitungamira kune inogona kuita ngura uye kutadza kwemagetsi nzira.
3. Etching Errors: Under-etching inogona kusiya mhangura isingadiwi pabhodhi, zvichikonzera kushaya simba, asi kunyanya-etching kunogona kubvisa mhangura yakawandisa, inotungamirira kumashorts emagetsi.
4. Kutengesa Kwakashata: Kukanganisa senge inotonhora solder majoini, kusakwana solder, uye solder mabhiriji anogona kukonzera akavhurika maseketi kana mapfupi maseketi, zvichikanganisa zvakanyanya kushanda kwebhodhi.
5. Yakatsemuka Vias / Mapedhi: Zvimedu zvakaputirwa nemaburi (vias) kana mapadhi anogona kukanganisa kuenderera kwemagetsi kwedunhu.
6. Kusvibiswa: Zvisaririra senge flux kana zvigunwe zvinogona kukanganisa mashandiro ePCB nekukonzera kubuda kwemvura kana zvimwe zvinhu zvemagetsi.

Zvakawanda Kukundikana Kwechigadzirwa Kunobva Kubva Aya Makanganiso:

1. Electrical Shorts: Kubatanidza kusingatarisire kunogadzira nzira dzakavharika dzakarasika, zvichiita kuti isashande kana kukuvadzwa kwezvikamu.
2. Vhura Circuits: Inotarirwa yekubatanidza inoramba isina kuvharwa, zvichitungamira mukurasikirwa kwechiratidzo uye kusashanda zvakanaka kwedunhu.
3. Signal Integrity Issues: Matambudziko akaita sekuratidzira, kunonoka, uye ruzha runodzikisira kuita kwemaseketi ekumhanya kwazvo.
4. Kukanganisa Kwepakati: Uku kukanganisa kunokonzereswa chete pasi pemamiriro chaiwo kana kushushikana, zvichiita kuti zviome kuona uye kuongorora.
5. Cascading Failures: Imwe pfungwa yekutadza inogona kukonzeresa systemic kuparara, kukanganisa bhodhi rose kana kunyange akabatana masisitimu.

Kukosha Kwekuedza Maitiro Akanakisisa:

• Kugamuchira yakazara yekuyedza maitiro akanakisa kwakakosha mukuziva nekugadzirisa izvi zvakakanganisika pakutanga kwekugadzira maitiro.
• Izvi zvinosanganisira bvunzo dzakati wandei dzakaita seAutomated Optical Inspection (AOI), In-Circuit Testing (ICT), Functional Testing, nedzimwe, imwe neimwe ichigadzirisa marudzi akasiyana ezvingangoitika.
• Kuonekwa kwekutanga kuburikidza nemiedzo iyi hakungoite kuti PCB ivimbike chete asiwo inochengetedza mari ine chekuita nekugadzirisa kana kutadza mumunda.

Kazhinji, kunzwisisa nekugadzirisa zvikanganiso izvi zvinowanzoonekwa paPCB panguva yekugadzira kwakakosha pakuona kunaka uye kuvimbika kwechigadzirwa chekupedzisira. Kuongorora nguva dzose uye kwakakwana kwakakosha pakuona matambudziko anogona kuitika pakutanga, nokudaro kudzivirira kutadza kukuru uye kuchengetedza kuvimbika kwePCB mukushandiswa kwayo kwainotarisirwa.

Yakakurumbira PCB Kuedza Nzira

Kune akati wandei nzira dzekuyedza dziripo dzekuongorora kunaka kwePCB. Idzi nzira dzinosanganisira in-circuit bvunzo, kubhururuka probe kuyedzwa, otomatiki optical inspection (AOI), uye inoshanda yekuyedza. Zvisinei, zvakakosha kufunga nezvezvimwe zvinhu usati wasarudza nzira yekushandisa.

Semuyenzaniso, kuyedza-kutsva haina kukodzera kupurojekiti yega yega, asi inogona kubatsira mukudzivirira kutangwa kwechigadzirwa zvinonyadzisa uye nekuona nyaya dzinogona kupfupisa hupenyu hwechigadzirwa. Nekudaro, zvakakosha kuti uzive kuti kupisa-mukuyedza kunogona kuisa iyo PCB kune yakawedzera kushushikana, iyo inogona kudarika yakajairika mamiriro ekushanda. Zvakakoshawo kutaura kuti kushanda kwekupisa-mukuedza kunogona kukonzerwa nekuvapo kana kusavapo kwekukanganisa mubhodhi.

Imwe neimwe nzira yekuyedza ine zvayakanakira uye zvinogumira, uye kusarudzwa kwenzira kunofanirwa kuenderana nezvinodiwa zvepurojekiti uye nhanho inodiwa yekusimbisa mhando. Nekunyatsofunga nezvezvinhu izvi uye kusarudza nzira yekuyedza yakakodzera, vagadziri vanogona kuvandudza kuvimbika uye kushanda kwePCB yavo.Izvi zvinotevera pari zvino dzakakurumbira nzira dzekuyedza:

In-Circuit Testing

In-circuit test (ICT) inzira yakakosha uye yakavimbika kwazvo yekuona kunaka uye kushanda kweakadhindwa edunhu mabhodhi (PCBs). Heino kupatsanurwa kweayo akakosha maficha:

1. Otomatiki Kuedzwa kweIndividual Circuits: ICT inosanganisira otomatiki kuyedzwa kwedunhu rega rega pabhodhi. Iyo inotarisa kune yakakodzera chikamu kukosha uye inova nechokwadi chekuti izvi zviri mukati mekushivirira kwakatsanangurwa, kuderedza mikana yekukanganisa kwevanhu.
2. Kuona Mhosva: Iyo nzira inoshanda mukuona zvikanganiso senge isiriyo chikamu chekutarisa, mapfupi maseketi, uye zvimwe zvingangoitika zvinogona kukanganisa kushanda kwePCB.
3. Common Test Types:
   • Peel Bvunzo: Inoyera simba rinodiwa kupepeta lamination kubva kuPCB, zvichiratidza kunaka kwelamination.
   • Solder Float Test: Inoongorora kana solder yapinda zvakakwana mukati mesimbi, izvo zvakakosha kune yakasimba solder joint.
   • Solderability Bvunzo: Inoona kuti solder inonamatira sei kuPCB zvikamu.
   • Surface Mount Simulation: Inoedza kugona kwePCB kumirisana nemamiriro anowanikwa panguva yekukwira kwepamusoro magungano maitiro.
   • Wetting Balance Analysis: Inoongorora kunyorova zvivakwa zve solder pane PCB zvikamu.
4. Burn-in Testing: Iyi fomu yeICT inosanganisira kushandisa yakakwira-voltage magetsi kutevedzera mamiriro ekushanda ebhodhi redunhu. Kunyange ichishanda mukuona kukanganisa kwakadzikama, kutsva-mukuedza kunotakura njodzi yekukuvadza zvinhu uye kunowanzo shandiswa pamwe chete nedzimwe nzira dzekuyedza.
5. Kukosha muPCB Kugadzira: Kuedza maPCB kwakakosha kuti udzivise kukundikana nekuda kwehurombo husina kunaka kana kukanganisa kwekugadzira. Sezvo kutadza kwePCB kuchigona kudhura, kuyedzwa kwakakwana kwakakosha, zvisinei nekuti PCB inogadzirwa mumba kana kunze. Izvi zvinovimbisa kuti chigadzirwa chekupedzisira chinounzwa kune vatengi ndeyemhando yepamusoro uye yakavimbika.

Flying Probe Testing

Flying probe test inzira inoshandiswa mukudzora kwemhando yeakadhindwa edunhu mabhodhi (PCBs), ichipa zvakati wandei zvakanakira, kunyanya kune chaiwo masikero ekugadzira uye marudzi. Heino mhedziso yeayo akakosha maficha:

1. Mutengo-Kushanda uye Kubudirira: Imwe yemabhenefiti ekutanga ekubhururuka kuongorora probe mutengo wayo. Inoshanda zvakanyanya pakuona zvikanganiso paPCB, zvichiita kuti ive sarudzo inoshanda kune mamwe marudzi ePCB kugadzirwa.
2. Kukodzera kwePrototypes uye Yakaderera-Vhidhiyo Kugadzirwa: Kubhururuka kuongorora probe kunonyanya kukodzera prototypes uye yakaderera-vhoriyamu yekugadzira inomhanya. Izvi zvinokonzerwa nekushanduka kwayo uye kureruka kwainogona kuseta kune akasiyana PCB magadzirirwo.
3. Kuganhurirwa kweKugadzirwa Kwepamusoro-Vhoriyamu: Kunyangwe zvakanakira, kubhururuka kuongorora probe hakuna kunaka pakugadzirwa kwehuwandu. Mamiriro enzira yekuyedza, inosanganisira maprobe ega ega anofamba kuyedza zvikamu zvakasiyana zvePCB, inoita kuti isanyanya kushanda pakugadzira kwakakura uko kumhanya kwakakosha.
4. Methodology: Mukubhururuka kwekuongorora kuongorora, simba uye magetsi emagetsi masaini anoiswa kune dzakanangana nzvimbo dzekuongorora paPCB. Mibairo yezviyero izvi inoratidza kana paine chikanganiso mudunhu. Kutsauka kubva pane zvinotarisirwa kunoratidza kuti PCB haizadzise zvinodiwa.
5. Kurongeka uye Kuvharwa: Iyi nzira inowanzoonekwa seyakarurama pane yechinyakare in-circuit bvunzo. Inogona kuyedza kusvika ku99% yePCB, ichipa ongororo yakazara yekushanda kwebhodhi.
6. Panguva imwecheteyo Zviyero Zvakawanda: Maprobe akawanda anoshandiswa mukubhururuka kuongorora probe, zvichibvumira kuyerwa panguva imwe chete panzvimbo dzakasiyana paPCB. Iyi nzira yakawanda inoderedza nguva yose inodiwa pamuedzo wega wega.
7. Dhizaini Yekufunga: Izvo zvakakosha kuti PCB dhizaini ibatanidze "isina tende" dhizaini kudzivirira maprobes kubva pakubata chikamu makumbo, izvo zvinogona kutungamirira kune zvisiri izvo kuverenga kana kukuvara.
8. Kuenzanisa Kubatsira Pamusoro Pe-In-Circuit Testing: Panyaya yemutengo uye huwandu hwemaprobes anodiwa, kubhururuka kuongorora probe kunodhura pane ye-in-circuit bvunzo. Kudiwa kwayo kwenhamba diki yebvunzo dzebvunzo inoita kuti ive yakakodzera kune diki-mwero kana kushoma kuoma PCB kugadzirwa.

Automated Optical Inspection (AOI)

Automated Optical Inspection (AOI) inyanzvi yakakosha tekinoroji inoshandiswa mukugadzira akadhindwa edunhu mabhodhi (PCBs) kuve nechokwadi chemhando uye nemazvo. Heano maitiro akakosha eAOI:

1. Kushandisa Makamera uye Maikorosikopu: Masisitimu eAOI anoshandisa makamera akawanda uye maikorosikopu kutora mifananidzo yakadzama yemaPCB. Iyi mifananidzo inobva yashandiswa pakuongorora.
2. Kuenzanisa neSchematics: Mifananidzo yakatorwa inofananidzwa nehurongwa hwebhodhi kana "bhodhi regoridhe" (bhodhi rereferensi rinozivikanwa kuti harina kukanganisa) uchishandisa software yakasarudzika. Kuenzanisa uku kunobatsira kuona chero kusawirirana kana kukanganisa.
3. Kukurumidza Kuonekwa Kwematambudziko: Nekunyatsoongorora bhodhi rega rega, AOI inobvumira kukurumidza kutariswa kwematambudziko akasiyana, izvo zvakakosha mukudzivirira zvigadzirwa zvakakanganisika kuti zvisafambire mberi kudzika mutsetse wekugadzira.
4. Detection Capabilities:
   • Etching Issues: Inogona kuona pasi uye pamusoro-etching matambudziko.
   • Soldering Defects: Nyaya dzakaita senge solder gap uye yakawandisa solder zvinozivikanwa.
   • Component Defects: Zvisizvo zvikamu, zvisizvo zvezvikamu zvakakosha, uye kuiswa kusina kunaka kana kurongeka zvinoonekwa.
   • Yakasimudzwa Lead Kushomeka: Inogona kuona nyaya ine yakasimudzwa inotungamira pane zvikamu.
   • BGA Shorts uye Open Circuits: AOI inogona kuona zvikabudura uye kuvhura zvinongedzo mumapasuru eBall Grid Array (BGA).
5. Non-Contact Inspection Method: Senzira isiri-contact yekuongorora yekuona, AOI ine hunyanzvi pakuona zvese zviri zviviri zvirema zvidiki uye kukundikana kwakakosha zvakanyanya pasina kubata PCB.
6. Kunyatsoita: AOI inozivikanwa nekugona kwayo kuona zvakakanganiswa, zvichiita kuti ive imwe yenzira dzakavimbika dzekuongorora PCB.
7. Flexibility in Manufacturing Process: Masisitimu eAOI anogona kubatanidzwa pamatanho akasiyana-siyana ePCB kugadzira maitiro-kusati kwave, panguva, kana mushure mekutengesa patsva, kunova ndiko kunowanzoitika zvisingaite.
8. Kururamisa Nekukasika Kwezvinhu: Kuiswa kwemasisitimu eAOI panzvimbo dzakarongwa mumutsetse wekugadzira kunobvumira kugadzirisa nekukasira kwechero nyaya dzaonekwa. Iyi proactive maitiro inoderedza mukana wekuramba zvigadzirwa padanho rekupedzisira rekuongorora uye inovandudza kuita kwese kwekugadzira.

Basa Rinoshanda

Kushanda kuyedzwa mukati mekugadzirwa kwePCB inhanho yakakosha mukuona kuti chigadzirwa chekupedzisira chinoshanda sezvakarongwa. Heino mhedziso yemashandiro anoita hurongwa uye zvazvinobatanidza:

1. Kuongorora Kwemuviri Zvikamu: Kushanda kuyedzwa kunosanganisira kunyatsoongorora zvinhu zvemuviri zvePCB. Izvi zvinosanganisira kuongorora masaini anogadzirwa nebhodhi uye kubatana pakati pezvikamu zvakasiyana.
2. Kuedza Kukodzera uye Basa reZvidiki-Zvikamu: Chinhu chakakosha chekuyedza mashandiro ndechekuona kukwana uye kushanda kwezvidiki-zvikamu. Izvi zvinova nechokwadi chekuti zvikamu zvese zvePCB zvakanyatsorongeka uye zvinodyidzana sezvakarongwa.
3. Kuve nechokwadi Chekuita Kwakarongwa: Chinangwa chekutanga chekuyedza mashandiro ndechekusimbisa kuti chigadzirwa chekupedzisira chinoshanda sekugadzirwa. Izvi zvinosanganisira kutarisa zvese zvinoshanda zvePCB kuti ive nechokwadi chekuti vanosangana nemagadzirirwo ezvakatemwa.
4. Akasiyana Manhanho ekuedzwa: Kushanda kuyedzwa kunogona kubva pamiyedzo yekutanga, senge on/off power test, kune mamwe maitiro akaomarara uchishandisa nyanzvi yekuyedza software. Chiyero chekuyedzwa chinoenderana nekuoma kwePCB uye zvinodiwa zvechigadzirwa chekupedzisira.
5. Chinangwa cheKuziva uye Kugadzirisa Matambudziko: Chinangwa chekupedzisira chekuyedza kushanda ndechekuona nekugadzirisa chero nyaya dzinogona kumuka mushure mekunge chigadzirwa chapedzwa. Iyi proactive nzira inobatsira mukudzivirira kusashanda zvigadzirwa kusvika kune vatengi.
6. Simulation yeBoard Operation: Kuve nechokwadi chekushanda kwakaringana, maitiro anosanganisira kutevedzera mashandiro ebhodhi nekuyedza masaini edhijitari uye analogi. Iyi simulation yakakosha pakuona chero mashandiro anomalies kana matambudziko edunhu.
7. Kushandiswa kweChaiyo Software yeKuonekwa: Muzviitiko zvakawanda, chaiyo software inoshandiswa panguva yekuyedza kubatsira mukuonekwa kwenyaya dzedunhu, kuwedzera huchokwadi uye kugona kwebvunzo.
8. Manyorero Ekuongorora: Padivi pe otomatiki kuyedzwa, ongororo yemanyorero inogona kuitwa kuti iongorore akasiyana maficha ePCB maitiro ekugadzira, kuve nechokwadi chekuti ese emhando yepamusoro anowanikwa.

Muchidimbu, kuyedza kunoshanda mukugadzira PCB inzira yakazara inoongorora izvo zvemuviri uye zvinoshanda zvebhodhi redunhu. Iyo inotangira kubva kune yakakosha simba cheki kusvika kune yakaoma simulations uye software-yakavakirwa kuyedza, zvese zvine chinangwa chekuona kuti PCB inoshanda nemazvo uye inosangana nemagadzirirwo ayo ekugadzira isati yatumirwa kumutengi. Kuyedzwa uku kwakakosha kuchengetedza mhando yepamusoro yechigadzirwa uye kugutsikana kwevatengi.

Automated X-ray Inspection (AXI)

Automated X-ray Inspection (AXI) inzira yakaomesesa inoshandiswa mukuyedzwa kweakadhindwa edunhu mabhodhi (PCBs), inosimudzira X-ray tekinoroji kuti ipe nzwisiso yakadzama muzvimiro zvemukati zvebhodhi. Heano kutsemuka kwemaitiro eAXI, zvakanakira, zvisingabatsiri, uye mashandisiro:

Zvimiro zveAXI

• Kushandisa X-rays: AXI inozvisiyanisa kubva kune dzimwe nzira dzekuongorora nekushandisa X-rays, iyo inogona kupinda muPCB uye nhengo dzezvikamu.
• Visualization of Solder Joints: Inobvumira kuonekwa kwemajoini ekutengesa mune zvose 2D uye 3D, zvichiita kuti zvive zvakakosha pakuongorora nzvimbo dzisingaoneki nemaziso kana nedzimwe nzira dzemaziso.
• Yakanakira Majoini Akavanzika: AXI inonyanya kubatsira pakuongorora bhora regidhi arrays (BGA) uye mamwe epasi pedhi pakavanda majoini.
• Kuonekwa kweSolder Voids: Kusiyana nedzimwe nzira dzekuongorora dzemaziso, AXI inogona kuona solder voids, izvo zvinokanganisa zvakanyanya zvinogona kukanganisa kuvimbika kwePCB.

Advantages

• Yakanyanya Kukanganisa Kutariswa Matengo: AXI inogona kuwana mamwe emhando yepamusoro yekuona hurema pakati pese PCB nzira dzekuyedza.
• Kusimbisa paSolder Joint Quality: Chinangwa cheAXI chiri pahutano hwemajoini ekutengesa, pane kungobatanidza chete, kupa kuongororwa kwakazara kwePCB kuvimbika.

payakaipira

• Kutora Nguva uye Mutengo-Wakakura: Iyo nzira inogona kunonoka uye inodhura zvakanyanya kana ichienzaniswa nedzimwe nzira dzekuongorora.
• Kudiwa kweVashandi vane Unyanzvi: Kushandisa michina yeAXI uye kududzira zvabuda kunoda vashandi vakanyatsodzidziswa uye vane ruzivo.

kunyoresa

• Yakakwira-Vhoriyamu Kugadzirwa: AXI yakanyatso kuenderana neakakwira-vhoriyamu PCB kugadzirwa uko yakakwira chirema chekuona chiyero chinogona kururamisa nguva uye mutengo unobatanidzwa.
• Mabhodhi ane Chip Zvikamu: Zvinonyanya kukosha kune mabhodhi ane chip zvikamu zvine mapedhi akavanzika, sezvo izvi zvichinetsa kuongorora uchishandisa nzira dzechinyakare.

Muchidimbu, Automated X-ray Inspection inzira inoshanda kwazvo yekuongororwa kwePCB, kunyanya mumamiriro ezvinhu ekuti mukati kana zvakavanzika hurema hunofanirwa kuzivikanwa. Kugona kwayo kuona solder voids uye kutarisa kune solder joint quality inoita kuti ive chinhu chakakosha pakuona kuvimbika kwePCBs, kunyanya munzvimbo dzekugadzirwa kwepamusoro. Zvisinei, mari uye nguva zvinorehwa, pamwe chete nekudiwa kwevashandi vane unyanzvi, zvinhu zvinokosha zvekufunga nezvazvo pakubatanidza AXI mukugadzirwa kwekugadzira.

Kuonekwa Kwekuona

Kuongorora kwekuona inzira yakakosha mukuyedzwa kwemabhodhi edunhu akadhindwa (PCBs), zvichitsamira pahunyanzvi uye kuona kwehunyanzvi hwehunyanzvi kuona hurema. Ngatiburitse mativi ayo:

Tsanangudzo yeVisual Inspection

• Manual Testing Method: Icho chikamu chekuyedzwa kwemanyorero, uko nyanzvi dzehunyanzvi dzinotarisa nemaziso kuona hurema.
• Chiyero cheOngororo: Iyo yekuongorora inowanzo vhara zvinhu zvakaita seweld mhando, kuiswa kwezvikamu, uye mashandisirwo emasolder mask.
• Kukosha muPCB Kuongorora: Pasinei nekureruka kwayo, kuongorora kwekuona inzira yakakosha uye yakakosha yekuve nechokwadi chemhando yePCB.

Advantages

• Kureruka kweKuseta: Zviri nyore kuita, zvisingade michina yakaoma kana software.
• Mutengo-Kushanda: Kuongorora kwekuona ndeimwe yeanonyanya kudhura sarudzo muPCB yekuyedza.
• Kuonekwa kweMakuru Solder Defects: Inonyanya kushanda pakuona zvakakosha zvine chekuita nekutengesa.

payakaipira

• Zvinotora Nguva uye Zvakanyanya Kushanda: Zvinoda kushanda nesimba nesimba uye nguva.
• Kusapindirana uye Kukanganisa Kwevanhu: Kushanda kunovimba zvakanyanya nehunyanzvi uye kutarisisa kwenyanzvi, zvichitungamira kune zvingangove zvisingaenderane uye kukanganisa.
• Yakaganhurirwa Chiyero: Majoini ekutengesa anooneka chete uye akaremara anogona kuongororwa, zvichisiya zvingangoitika zvemukati kana zvidiki zvidiki zvisina kuonekwa.

kunyoresa

• Kukodzera Kumadhizaini Ari Nyore: Kuongorora kwekuona kunonyanya kushanda kune maPCB ane madhizaini akareruka uye mahombe zvikamu, uko hurema hunowanzo onekwa nemeso.

Muchidimbu, nepo kuongorora kwekuona iri nzira yekutanga uye inodhura mukuedzwa kwePCB, kushanda kwayo kunogumira nekuvimba kwayo nehunyanzvi hwevanhu uye kusakwanisa kwayo kuona zvimwe zvidiki kana kukanganisa mukati. Iyo inonyanya kukodzera kune akareruka PCB madhizaini ane mashoma uye makuru zvikamu. Kune mamwe maPCB akaomesesa, kubatanidza kuongorora kwekuona nedzimwe nzira dzekuyedza dzepamusoro senge Automated Optical Inspection (AOI) kana In-Circuit Testing (ICT) inogona kupa yakawedzera kunzwisisa yemhando nzira.

Kusvirwa-mukati Testing

Burn-in kuyedza inzira yakakosha mukugadzirwa kwemagetsi, kunyanya mukuona kuvimbika uye hupenyu hurefu hwemidziyo yemagetsi senge akadhindwa edunhu mabhodhi (PCBs). Heino mhedziso yemaitiro, mabhenefiti ayo, uye mashandisiro ayo:

1. Tsanangudzo Yemaitiro: Kupisa-mukuedza kunosanganisira kuisa pasi zvishandiso zvemagetsi kune nguva yakareba yekushanda pamazinga emagetsi. Izvi zvinowanzotora pakati pe48 kusvika 168 maawa.
2. Stress Mamiriro: Izvo zvikamu zvinoratidzwa kune yakakwira voltages, tembiricha yakanyanyisa, uye mamwe mamiriro epamusoro-stress panguva yebvunzo iyi. Izvi zvinotevedzera kushanda kwenguva refu munguva yakapfupikiswa.
3. Yakanyanya Kuedza Masikirwo: Inowanzo kunzi "nzira yekufa kwevacheche", kuyedza-mukuyedza kwakagadzirirwa kuve kwakanyanya, kusundira zvikamu kumiganhu yavo yekushandisa.

Zvakanakira Kusvirwa-mukati Kuongororwa

1. Kubvisa Kukundikana Kwenguva Yasati Yakwana: Chakanyanya bhenefiti ndiko kuzivikanwa uye kubviswa kwezvikamu zvinotadza nguva isati yakwana. Nekubvisa izvi zvikamu zvisina simba kare, kuvimbika kwese kwechigadzirwa kunowedzera.
2. Kuderedza Kukundikana Kwemumunda: Nekuona kuti chete yakasimba uye yakasimba zvikamu zvinoita kuti ipfuure chikamu chekuyedza, mukana wematambudziko anoitika mukushandiswa chaiko (mumunda) wakaderedzwa zvakanyanya.
3. Kuzivikanwa Kwezvinhu Zvine Vulnerable: Kupisa-mukuyedza hakungobvisi kutadza kwazvino asiwo kunobatsira mukuona zvikamu zvinonyanya kutadza kukundikana mune ramangwana pasi pekushushikana.

Kushandisa uye Kukosha

• Hunhu Husimbiso: Kuyedzwa uku chikamu chakakosha chekusimbiswa kwemhando mukugadzirwa kwemagetsi, kuve nechokwadi chekuti zvigadzirwa zvinogara uye zvakavimbika.
• Kuvimbika muHash Conditions: Zvinonyanya kukosha kune zvishandiso zvinozoshandiswa munzvimbo dzakaoma kana pasi pemamiriro ekushanda.
• Kudzivirira Kukundikana kweHupenyu Hwepakutanga: Nekuenzanisa kushandiswa kwakawedzerwa, kupisa-mukuyedza kunobatsira mukuona kuti zvigadzirwa hazvikundike nguva pfupi mushure mekutumirwa, izvo zvakakosha kuti mutengi avimbe uye mukurumbira wemhando.

Muchidimbu, kutsva-mukuyedza inhanho yakaoma uye yakakosha mukugadzira zvigadzirwa zvemagetsi. Hunhu hwayo hwakadzama hunobatsira mukuona nekubvisa kukundikana kwehupenyu hwepakutanga, kuve nechokwadi chekuti zvigadzirwa zvekupedzisira zvakavimbika uye zvinokwanisa kumirisana nekushushikana kwekushandisa chaiko. Maitiro aya akakosha kuendesa zvemhando yepamusoro, zvemagetsi zvinogara kune vatengi uye maindasitiri zvakafanana.

Boundary Scan Test

Boundary Scan Testing, inowanzo zivikanwa seJTAG (Joint Test Action Boka) bvunzo, inzira inoshandiswa zvakanyanya yekuyedza kubatana pamabhodhi edunhu akadhindwa (PCBs), kunyanya mumabhodhi akaomarara kana akaturikidzana. Heino mhedziso yemaitiro ayo, zvakanakira, uye mashandisirwo:

Maitiro eBoundary Scan Testing

1. Kuedza Kubatana: Chinangwa chikuru chekuyedzwa kwemuganho scan ndeyekuyedza kubatana pakati pezvikamu paPCB. Izvi zvinosanganisira kutarisa maseketi akavhurika, maseketi mapfupi, uye kubatana kwakakodzera.
2. Kushandiswa kweTest Access Ports (TAPs): Muedzo unosanganisira kuisa bvunzo data (mabhatiri) mumitungamiri inobatanidza dunhu remukati remachipi kumapini avo ekunze. Iyi data inobva yatenderedzwa kuburikidza nedunhu kuti iedze kushanda kwayo.
3. Kuyedza Kusingapindire: Kusiyana nedzimwe nzira dzekuedza, muganhu wekutarisa haudi kuwana kwemuviri kune yega node paPCB. Izvi zvinonyanya kubatsira kune akawanda-layered kana akakwira-density mabhodhi uko kuwana kwemuviri kune ese node kunonetsa.

Advantages

1. Inokodzera Complex PCBs: Boundary scan yakanakira yemazuvano, yakaoma maPCB ane akawanda akaturikidzana uye yakakwirira densities.
2. Kuyedzwa Kwakakwana: Inobvumira kuyedzwa kwakazara kwekubatanidza kwebhodhi pasina kudiwa kwemuviri probes kana mapoinzi ebvunzo pane imwe neimwe node.
3. Flexibility: Iyo nzira inogona kuchinjirwa kune akasiyana maapplication kunze kwekungoyedza kubatana.

Applications

1. System-Level Testing: Inogona kushandiswa kune yakazara system cheki kuti ive nechokwadi chekuti zvikamu zvese paPCB zviri kushanda nemazvo mumamiriro ehurongwa hwese.
2. Memory Testing: Boundary scan inoshanda mukuyedza ndangariro zvikamu paPCB.
3. Programming Flash Memory: Inogona kushandiswa kuronga flash memory chips paPCB, rinova danho rakakosha mumidziyo yakawanda yemagetsi.
4. CPU Emulation: Iyo tekinoroji inobvumira kutevedzera mashandiro epakati pekugadzirisa unit (CPU), iyo inogona kuve yakakosha pakuongorora uye kuyedzwa.
5. Kuona Kukanganisa Kwekugadzira: Inoshandiswawo zvakanyanya mukugadzira maitiro kuona kukanganisa uye kuve nechokwadi chekutonga kwemhando.

Muchidimbu, Boundary Scan Testing inzira inochinja-chinja uye inoshanda yekuyedza maPCB, kunyanya ayo akakora kana ane zvimiro zvakaomarara. Kugona kwayo kuyedza pasina kuda kuwana kwemuviri kune yega node uye kuchinjika kwayo kune akasiyana maapplication kunoita kuti ive chishandiso chakakosha mune zvese zvekugadzira nekusimudzira zvikamu zvemagetsi zvigadzirwa.