Tare da gabatarwar fasahar dutsen saman, ƙimar marufi na Kwamitin PCB yana ƙaruwa cikin sauri. Sabili da haka, har ma ga wasu allon PCB tare da ƙarancin ƙarfi da ƙarancin adadi, ganowar atomatik na allon PCB na asali ne. A cikin hadaddiyar hukumar kula da da’irar PCB, hanyar gwajin gadon allura da bincike biyu ko hanyar gwajin allurar tashi hanyoyi guda biyu ne na kowa.

1. Hanyar gwajin gadon allura

Wannan hanyar tana kunshe da bincike-ruwa da aka ɗora akan ruwa wanda aka haɗa zuwa kowane wurin ganowa akan PCB. Ruwan bazara yana tilasta kowane bincike zuwa matsin lamba na 100-200g don tabbatar da kyakkyawar hulɗa a kowane wurin gwaji. An shirya irin waɗannan binciken tare kuma ana kiransu “gadajen allura”. Za’a iya tsara wuraren gwaji da siginar gwaji ƙarƙashin ikon software na gwaji. Kodayake yana yiwuwa a gwada bangarorin biyu na PCB ta amfani da hanyar gwajin gado na gado, lokacin zayyana PCB, duk wuraren gwajin yakamata su kasance akan saman waldi na PCB. Kayan gwajin gwajin allura yana da tsada kuma yana da wahalar kulawa. An zaɓi allura a cikin tsararru daban -daban gwargwadon takamaiman aikace -aikacen su.

Babban maƙasudi mai amfani da madaidaiciyar manufa ya ƙunshi jirgi da aka haƙa da fil 100, 75, ko 50mil tsakanin cibiyoyi. Fil ɗin suna aiki azaman masu bincike kuma suna yin haɗin injin kai tsaye ta amfani da masu haɗin lantarki ko nodes akan allon PCB. Idan kushin da ke kan PCB ya yi daidai da grid ɗin gwaji, an sanya fim ɗin polyvinyl acetate, wanda ya rame bisa ga ƙayyadewa, tsakanin grid da PCB don sauƙaƙe ƙirar takamaiman bincike. Ana samun ci gaba da ganowa ta hanyar samun damar ƙarshen ƙarshen raga, waɗanda aka ayyana a matsayin haɗin Xy na kushin. Tunda kowace cibiyar sadarwa akan PCB ana bincika akai akai. Ta wannan hanyar, an kammala gano mai zaman kansa. Koyaya, kusancin binciken yana iyakance tasirin hanyar allura-gado.

2. Bincike sau biyu ko hanyar gwajin allurar tashi

Gwajin allura mai tashi ba ya dogara da ƙirar fil da aka ɗora akan abin ɗorawa. Dangane da wannan tsarin, ana ɗora bincike biyu ko fiye akan kananun, kawunan magnetic masu motsi a cikin jirgin XY, kuma bayanan CADI Gerber ne ke sarrafa wuraren gwajin. Binciken biyu na iya motsawa tsakanin mil mil 4 na juna. Binciken zai iya tafiya da kansa kuma babu iyakance iyaka na yadda za su iya kusantar juna. Mai gwajin da hannu biyu da ke juyawa da baya yana dogara ne akan ma’aunin ƙarfin. Ana danna allon PCB akan wani rufin rufi akan faranti na ƙarfe wanda ke aiki azaman wani farantin ƙarfe don mai haɗawa. Idan akwai ɗan gajeren zango tsakanin layin, ƙarfin ƙarfin zai fi girma a wani matsayi. Idan akwai masu fashewar da’irar, ƙarfin ƙarfin zai zama ƙarami.

Don grid ɗin gabaɗaya, madaidaicin grid don allon katako da kayan aikin hawa tare da abubuwan haɗin fil shine 2.5mm, kuma kushin gwajin yakamata ya fi ko daidai da 1.3mm. Idan grid ɗin ƙarami ne, allurar gwajin ƙarama ce, mai rauni kuma tana da sauƙin lalacewa. Sabili da haka, an fi son grid mafi girma fiye da 2.5mm. Haɗin mai gwajin duniya (daidaitaccen ma’aunin grid) da gwajin gwajin allura mai tashi yana ba da damar yin gwaji na tattalin arziki na manyan allon PCB. Wata hanyar kuma ita ce amfani da na’urar gwajin roba mai gudana, dabarar da za a iya amfani da ita don gano wuraren da suka karkace daga grid. Koyaya, tsayi daban -daban na pads tare da matakin iska mai zafi zai hana haɗin wuraren gwajin.

Matakan uku na ganowa galibi ana aiwatar da su:

1) Gano allon bare;

2) Gano kan layi;

3) Gano aikin.

Za’a iya amfani da nau’in gwajin duniya don gwada allon PCB na salo iri ɗaya, da kuma aikace -aikace na musamman.