Kuedzwa kweFlying Probe kwePCB Prototypes uye Low Volume

Flying Probe Testing inomiririra kufambira mberi kwakakosha mumunda wekuedzwa kwePCB, ichipa nzira inochinja-chinja uye inoshanda yekuziva zvinogona kukanganisa mukati mePCB magungano. Iyi nzira inonyanya kubatsira pakuyedzwa kweprototype uye diki kusvika pakati pekugadzira inomhanya nekuda kwekuchinjika kwayo uye yakaderera mitengo yekuseta kana ichienzaniswa neyechinyakare in-circuit yekuyedza nzira dzinoda zvigadziriso zvetsika.

Nhanganyaya yeFlying Probe Testing

Izvo zvakakosha zvekubhururuka kuongorora probe kuri mukushandisa kwayo inofambiswa bvunzo probes. Aya maprobes anodzorwa nemazvo kuti abatane neakananga mapoinzi paPCB, senge component pads, test pads, uye pachena vias, kuita bvunzo dzakasiyana dzemagetsi. Iko kugona kufamba wakasununguka mhiri kwePCB kunobvumira iyo inobhururuka probe tester kuti iite yakazara bvunzo pasina kudiwa kweiyo yakatsaurirwa gadziriso, zvichiita kuti ive sarudzo yakanaka yekuyedza prototypes kana mabhodhi mune yakaderera kusvika pakati mavhoriyamu.

Zvikamu zveFlying Probe Testers

Vanobhururuka probe testers vakashongedzerwa nehuwandu hwezvinhu zvetekinoroji kuti zvifambise kuyedzwa chaiko, kusanganisira:

• Signal Jenareta: Kugadzira akasiyana masaini emagetsi anodiwa pakuyedza akasiyana zvikamu uye mashandiro edunhu.
• DC uye AC Power Supplies: Kugonesa iyo Pcb gungano panguva yekuedzwa, kutevedzera mamiriro ekushanda.
• Sensors uye Measurement Devices: Kuyera chaizvo kukosha kwemagetsi senge kuramba, capacitance, uye inductance.
• Kamera Systems: Kuongorora nekuona chikamu chekuiswa uye polarity, zvichiwedzera kusimudzira kugona kweiyo system.

Zvakanakira Flying Probe Testers

• Fixtureless Testing: Imwe yemabhenefiti ekutanga evanobhururuka probe testers kugona kwavo kushanda pasina tsika dzekugadzirisa. Izvi zvinoderedza zvakanyanya mutengo wepamberi uye nguva yakabatana nekugadzirira bvunzo, kunyanya inobatsira kune prototypes uye mapfupi ekugadzira anomhanya.
• Flexibility: Kubhururuka probe testers kunogona kurongwa zvakare kune akasiyana PCB magadzirirwo, zvichiita kuti zvive zvakanyanya kuchinjika kune shanduko mune zvinodiwa zvekugadzira. Uku kuchinjika kwakakosha kune vagadziri vanobata neakasiyana siyana ePCB magadzirirwo.
• Detailed Diagnostics: Sezvo vanobhururuka probe testers vachigona kunanga chaiwo mapoinzi paPCB, ivo vanopa ruzivo rwakadzama rwekuongorora. Izvi zvinobvumira kuzivikanwa kwakaringana kwezvinhu zvakaita sekuvhura, zvikabudura, uye kutsauka kwechikamu.

Mashandiro Anoita Flying Probe Testing

1. Kugadzira Chirongwa Chekuyedza: Nhanho yekutanga inosanganisira kugadzira yakadzama bvunzo chirongwa chakagadzirirwa kune chaiyo PCB gungano riri kuedzwa. Chirongwa ichi chinoraira kutevedzana kwebvunzo dzinofanirwa kuitwa, kusanganisira kuti ndedzipi mapoinzi anofanirwa kubata uye zviyero zvipi kana masaini ekushandisa.
2. Kurodha uye Kuiswa: Chirongwa chekuyedza chinotakurwa mune inobhururuka probe tester. Gungano rePCB rinobva raiswa pane conveyor system inoiendesa kunzvimbo yekuyedza.
3. Kuedza Maitiro: Panguva yekuyedza, maprobes anofamba achipfuura nePCB gungano, achisangana nemapoinzi akafanotemerwa. Zviratidzo zvemagetsi zvinoiswa, uye zviyero zvekupikisa, capacitance, inductance, uye mamwe magetsi emagetsi anotorwa. Iyi nzira inogona zvakare kusanganisira kushandiswa kweDC uye AC simba kutevedzera mamiriro ekushanda.
4. Defect Detection: Iyo data yakaunganidzwa inoongororwa kuti ione kana zvivakwa zvemagetsi pakati peiyo probed mapoinzi zvinowira mukati mezvakatarwa kushivirira. Kusiyana kunopfuura kushivirira uku kunoratidza kukanganisa kunogona kuitika, senge zvisiri izvo zvechikamu kukosha, kuvhura, kana zvikabudura.

Mhando Dzakakanganiswa

1. Inovhura uye Shorts
Dunhu rakavhurika rinoitika kana paine kutyora kwedunhu, kudzivirira kuyerera kwezvino. Izvi zvinogona kunge zvichikonzerwa nekushaikwa kwemasoja majoini, maronda akachekwa, kana kumwe kusaenderera mberi munzira yemagetsi. Flying probe testers inoona inovhura nekutadza kuyera kuenderera pakati pemapoinzi maviri anofanirwa kunge akabatana nemagetsi.

Peji rino rinotaura nezve kuyedzwa kweprobe yekubhururuka isina zvigadziko yemaprototypes nemabheti madiki. Kuti uwane nzira dzese dzekuedza bhodhi, tanga negwara rekuyedza bhodhi redunhu ; kuti uwane zvinodiwa pakugadzira bvunzo dzemagetsi, shandisa bvunzo dzePCB dzemagetsi.

Maseketi mapfupi anoitika kana mapoinzi maviri asingafanirwe kubatanidzwa nemagetsi akabatanidzwa nekusaziva, kazhinji achitungamira kuyerera kwazvino. Zvikabudura zvinogona kukonzereswa neakarasika solder, conductive tsvina, kana bhiriji pakati pemapadhi ari padyo kana zviteshi. Vanobhururuka vanoongorora vanoongorora zvikabudura nekuona kuenderera kusingatarisirwe kana kuderedzwa kwekupokana pakati pemapoinzi.

2. Component Value Measurements
Resistance: Kuona kuti vanopikisa vari mukati mekushivirira kwavo kwakatarwa.
Capacitance: Kutarisa ma capacitor kune avo anotarisirwa capacitance kukosha.
Inductance: Kuyera inductors kuona kuti vanosangana nezvavakatemerwa inductance zvakatemwa.

3. Zvisipo Zvikamu
Kusavapo kwechikamu kubva panzvimbo yayo yakatarwa paPCB kukanganisa kwakajairika, kunyanya mumagadzirirwo akaomarara. Flying probe testers anoona zvinhu zvisipo nekutadza kuwana zvinotarisirwa kubatana kwemagetsi kana kuti component values ​​panzvimbo dzekuedzwa chaiko.

4. Chikamu Polarity
Zvikamu zvakaita sema diode, capacitor, uye maICs zvinofanirwa kutungamirwa nemazvo kuti zvishande sezvakarongwa. Vanobhururuka probe testers vanogona kutarisa chikamu polarity nekushandisa masaini ebvunzo uye nekuona kwainobva kuyerera kwazvino, kuve nechokwadi chekuti polarized zvikamu zvakaiswa nemazvo.

5. Zvisizvo kana Kuiswa Zvisizvo Zvikamu
Misalignment: Zvinoonekwa nekuyera kusawirirana mune zvinotarisirwa kubatanidza magetsi pamapadhi echikamu.
Kuiswa Kwakashata: Inotaridzwa nekusavapo kweinotarisirwa kubatana kana nekutsvaga zvinongedzo munzvimbo dzisingatarisirwe.

6. Soldering Defects
Insufficient Solder: Inotungamirira kumajoini asina simba kana kuti asiripo, akaonekwa nekuenderera mberi kwakashata kana kusatarisirwa kushorwa.
Yakawandisa Solder: Zvingangokonzera zvikabudura, zvakaonekwa nekuderedzwa kushongedzwa pakati pezvibodzwa zvisingafanirwe kubatanidzwa nemagetsi.
Cold Solder Joints: Zvinokonzera kusavimbika kwemagetsi ekubatanidza, anoonekwa kuburikidza nepakati kana akasiyana-siyana ekupikisa kuyerwa.

7. Yakakuvadzwa Zvikamu kana Traces
Kukuvadzwa kwemuviri kune zvikamu kana zvironda zvinogona kukanganisa kushanda kwedunhu. Nepo vaongorori vanobhururuka vachiona hurema hwemagetsi, kukuvadzwa kukuru kwemuviri kunogona kuratidza kusakwana kwemagetsi, sekuvhura, zvikabudura, kana zvinhu zvisirizvo.

Kuti uwane ongororo yakakwana yekugadzira, shandisa chinyorwa chino pamwe chete nekugadzirwa kwePCB ye microwave uye PCB inodzorwa ye impedance paunenge uchitarisa zvinodiwa zve stackup, assembly, kana bvunzo.

Nguva Yekushandisa Flying Probe Testing vs. Fixture Testing muPCB Manufacturing

Mukugadzira PCB, Flying Probe Testing uye Fixture Testing inzira mbiri dzekutanga dzinoshandiswa kuve nechokwadi chekushanda uye kuvimbika kwemabhodhi edunhu akadhindwa. Flying Probe Testing inonyanya kubatsira pakuyedzwa kweprototype uye diki kusvika pakati pekugadzira inomhanya nekuda kwekushanduka kwayo uye yakaderera mitengo yekuseta. Iyi nzira inoshandisa inofambiswa bvunzo probes kuita yakazara bvunzo dzemagetsi pane chaiwo mapoinzi ePCB pasina kudiwa kwetsika zvigadziriso. Izvi zvinoita kuti ive yakanaka yekuyedza yakaoma uye yakaonda maPCB, uko kugadzira chigadziriso kungave kuchidhura uye kuchinetsa. Vanobhururuka probe testers vanogona kukurumidza kuchinjika kune akasiyana PCB dhizaini, ichipa ruzivo rwakadzama rwekuongorora uye kuona zvinhu zvakaita sekuvhura, zvikabudura, uye kukosha kwechikamu.

Kune rumwe rutivi, Fixture Testing, kana In-Circuit Testing (ICT), inonyanya kukodzera kune yakakwirira-vhoriyamu yekugadzira nharaunda. Iyi nzira inoda chigadziriso-chakagadzirwa chinoenderana nePCB's test point, inobvumira kukurumidza kuyedzwa kwehuwandu hukuru hwebhodhi. Kunyange iyo yekutanga mari mukusimudzira gadziriso yakakwira, inova inodhura-inoshanda mukugadzirwa kwakawanda nekuda kwekugona kwayo kukurumidza uye kunyatso kuyedza imwe neimwe unit. Fixture yekuyedza yakanakira zvigadzirwa zvakamisikidzwa zvine madhizaini anowirirana uye inopa ongororo yakazara yekushanda kwechimwe chikamu uye kuiswa. Sarudzo pakati peidzi nzira mbiri zvinoenderana nezvinhu zvakaita sehuwandu hwekugadzira, kutariswa kwemitengo, uye kuoma kweiyo PCB dhizaini, nekubhururuka kwekuongorora kuongorora kunopa kuchinjika kukuru uye kuyedza kwekugadzirisa kunopa huwandu hwepamusoro uye hwakadzama kuongororwa mhosva.