Lub siab -cov teeb liab kev tsheb ciav hlau ceev, raws li "cov paj hlwb" ntawm lub tsheb ciav hlau ua haujlwm, ncaj qha txiav txim siab qhov tseeb ntawm kev teem caij tsheb ciav hlau, kev nyab xeeb thiab kev ua haujlwm zoo. pcb yog lub luag haujlwm tseem ceeb ntawm ntau yam khoom siv hauv lub teeb liab, thiab nws qhov kev ua tau zoo thiab kev ntseeg tau tuaj yeem suav tias yog lub hauv paus ntawm "cov paj hlwb". Tsis zoo li cov khoom siv hluav taws xob luam tawm hauv cov khoom siv hluav taws xob, siab -ceev tsheb ciav hlau teeb liab PCBs yuav tsum tau tiv thaiv kev ua haujlwm nyuaj rau lub sijhawm ntev - los ntawm qhov kub thiab txias sib txawv ntawm -40 ° C txog 70 ° C, muaj kev vibration ntau zaus, muaj zog electromagnetic cuam tshuam ib puag ncig, mus rau ntau xyoo ntawm kev ua haujlwm tsis muaj kev cuam tshuam. Qhov no tso rau pem hauv ntej cov qauv nruj rau PCB cov tuam txhab kev tshawb fawb thiab kev tsim kho, kev tswj cov txheej txheem, thiab kev tswj hwm kev muaj peev xwm ua tau zoo tshaj li cov qauv kev lag luam.
Cov kev cai tseem ceeb ntawm high -speed rail signal system pcb rau cov tuam txhab
Qhov chaw pib ntawm kev ua haujlwm siab -speed rail teeb liab system pcb yog thawj zaug pom nyob rau hauv cov txheej txheem ntawm kev ua kom haum rau qhov chaw huab cua. Txhawm rau tiv thaiv qhov kub thiab txias tsis zoo, cov tuam txhab tsim khoom yuav tsum paub xaiv cov khoom tshwj xeeb thiab cov txheej txheem compression - piv txwv li, siv cov substrates nrog rau qhov kub thiab txias tsis kam, ua ke nrog cov lamination kub thiab siab tswj, kom tsis txhob muaj cov khoom delamination thiab tawg thaum lub sij hawm hloov kub kub; Rau siab - zaus vibration, nws yog ib qho tsim nyog los txhim kho cov qauv ntawm lub rooj tsavxwm, txhim kho cov cuab yeej siv zog los ntawm cov txheej txheem xws li hlau edging thiab txhim kho lub qhov, thiab xyuas kom muaj kev ntseeg siab ntawm kev sib txuas ntawm cov khoom thiab cov pcb thaum lub sij hawm vuam txheej txheem los tiv thaiv kev sib koom tes sib koom ua ke los ntawm lub sij hawm ntev - kev co.
Thib ob, muaj zog electromagnetic compatibility yog qhov nyuaj nyuaj. Muaj ntau qhov cuam tshuam ntawm electromagnetic cuam tshuam los ntawm lub cev muaj zog thiab siab - cov khoom siv hluav taws xob nyob rau hauv qhov chaw siab - kev khiav tsheb ciav hlau ceev. Lub teeb liab system pcb yuav tsum tau txo cov teeb liab kis tsis tau thiab cuam tshuam los ntawm kev tswj hwm impedance (feem ntau yuav tsum tau impedance kam rau ua nyob rau hauv ± 8%), grounding optimization, shielding txheej tshuab, thiab lwm yam. Qhov no yuav tsum muaj cov tuam txhab lag luam kom muaj kev paub zoo siab - zaus thiab siab - ceev pcb ua cov peev txheej, xws li siv cov tshuab laser precision drilling kom ua tiav micro qhov kev sib tshuam thiab xyuas kom muaj kev ruaj ntseg ntawm cov teeb liab kis tau tus mob; Los ntawm kev siv cov ntaub ntawv tshwj xeeb ntawm daim npog ntsej muag thiab txheej txheej txheej xws li immersion kub thiab tshuaj lom neeg nickel palladium kub, kev ua haujlwm hluav taws xob tau zoo dua los xyuas kom meej cov teeb liab kis tau zoo txawm tias nyob hauv ib puag ncig cuam tshuam.
Tsis tas li ntawd, kev ntseeg siab ntawm siab -ceev rail teeb liab system luam tawm Circuit Boards kuj tso siab rau kev tswj xyuas kev tsim khoom zoo. Pib los ntawm lub Hoobkas tshuaj xyuas cov ntaub ntawv raw, manufacturers yuav tsum tau ua nruj me ntsis kev ntsuam xyuas ntawm txhua yam khoom xws li substrate, tooj liab ntawv ci, solder daim npog qhov ncauj, thiab lwm yam, kom tshem tawm cov khoom tsis tsim nyog; Thaum lub sij hawm tsim khoom, nws yog ib qho tsim nyog yuav tsum siv online AOI, X-ray detection thiab lwm yam khoom siv los txheeb xyuas cov teeb meem tam sim no xws li kab tsis xws luag, aperture deviations, thiab qhov zoo ntawm phab ntsa; Nyob rau hauv cov khoom tiav lawm, kev soj ntsuam zoo ntawm kev laus tiv thaiv, ya raws thiab kub tsis kam, hluav taws xob kev ua tau zoo, thiab txawm tias ntev - lub sij hawm kev cia siab rau simulating qhov tseeb kev khiav hauj lwm ib puag ncig ntawm siab - ceev rail yuav tsum tau kom paub tseeb tias txhua pcb muaj peev xwm ua tau raws li kaum xyoo ntawm kev pab cuam lub neej.
Kev Pabcuam Muaj Peev Xwm thiab Kev Lag Luam Lub Luag Haujlwm ntawm pcb Chaw tsim khoom rau Kev Siv Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob
Ntxiv nrog rau kev siv zog, kev ua haujlwm muaj peev xwm thiab lub luag haujlwm hauv kev lag luam kuj tseem yog qhov tseem ceeb rau kev ntsuas pcb cov tuam txhab ntawm high -speed rail signal systems. Kev tshawb fawb thiab kev tsim khoom ntawm high -speed rail signal systems yog ntev thiab muaj ntau yam kev hloov kho. Cov neeg tsim khoom yuav tsum muaj lub peev xwm los teb sai sai thiab hloov pauv hloov pauv hloov pauv - piv txwv li, muab kev hloov kho pcb kev daws teeb meem rau ntau hom khoom siv teeb liab (xws li lub tsheb ciav hlau tswj thiab xa cov khoom siv sib txuas lus), suav nrog txheej txheej optimization (los ntawm ntau txheej mus rau ntau txheej txheej) thiab hloov mus rau cov txheej txheem tshwj xeeb (xws li resin plug qhov thiab cov kauj ruam grooves); Nyob rau hauv cov txheej txheem xa khoom, nws yog ib qho tsim nyog los tsim kom muaj lub sijhawm teem sijhawm tsim khoom ruaj khov uas tuaj yeem ua kom lub sijhawm xa khoom ntawm cov xaj ntau thiab teb rau cov kev txiav txim sai rau kev saib xyuas thiab hloov cov kev xav tau, zam kev qeeb hauv pcb cov khoom uas yuav cuam tshuam rau siab - kev khiav tsheb ciav hlau ceev.
Qhov tseem ceeb tshaj, cov tuam txhab pcb ntawm siab -cov kab hluav taws xob ceev ceev yuav tsum tau ua lub luag haujlwm ntawm kev lag luam ntawm "kev nyab xeeb escorts". Qhov no tsis tsuas yog txhais tau hais tias ua tau raws li cov qauv nruj hauv tebchaws thiab kev lag luam (xws li kev lag luam kev tsheb ciav hlau tshwj xeeb cov ntawv pov thawj zoo), tab sis tseem tsim kom muaj lub neej zoo tag nrho ntawm kev taug qab - txhua pcb yuav tsum tau sau cov ntaub ntawv xws li cov khoom siv raw, cov txheej txheem ntau lawm, thiab cov ntaub ntawv soj ntsuam, yog li qhov ua rau tuaj yeem txheeb xyuas tau sai thaum muaj teeb meem tom ntej; Nyob rau tib lub sijhawm, cov tuam txhab lag luam tseem yuav tsum tau nqis peev ntxiv rau kev tshawb fawb thiab kev tsim kho, taug qab txoj kev loj hlob ntawm high -speed rail signal technology (xws li kev txhim kho kom nrawm dua thiab ntse dua lub teeb liab), thiab khaws cov txheej txheem kev ua haujlwm ntawm cov cim tshiab ntawm cov ntawv luam tawm ua ntej, muab rau pem hauv ntej- nrhiav kho vajtse txhawb rau siab -speed rail technology iteration.