Tsav Tsheb Recorders PCBA

 

CovTsav Tsheb Recorders PCBAyog engineered raws li lub siab-kev cia siab rau automotive video xwm txheej kaw systems. Nws koom ua ke nrog cov txheej txheem ua haujlwm siab txhawb nqa lub koob yees duab dual lossis triple, nrog rau cov khoom siv video encoding (H.264/H.265) rau tib lub sijhawm rau pem hauv ntej, nram qab, thiab chav nyob. Lub Rooj Tswjhwm Saib muaj lub zog tswj IC nrog kev tiv thaiv tsheb-qib ncua sijhawm, tuav 12V / 24V lub tsheb thauj khoom nrog kev thauj khoom-pob thiab thim rov qab- roj teeb tiv thaiv. Lub built-in GPS receiver muab qhov tseeb ceev thiab qhov chaw metadata, thaum lub accelerometer (G-sensor) pom kev sib tsoo thiab cia li kaw cov duab tseem ceeb. Kev khaws cia yog tswj hwm los ntawm MicroSD daim npav interface nrog kev tswj kev sau ntawv-cycling muaj zog. Lub Rooj Tswjhwm Saib suav nrog lub sijhawm tiag tiag rau lub sijhawm ua haujlwm kom raug thiab lub supercapacitor lossis roj teeb thaub qab kom huv si kaw cov ntaub ntawv thaum lub zog poob tam sim ntawd. Tsim los rau qhov kub thiab txias (-20℃rau +85 degree), PCBA siv cov khoom siv tsheb-qib thiab cov txheej txheem kom tiv taus kev vibration, noo noo, thiab thermal cycling hauv lub tsheb cabin. Compact thiab thermally optimized, nws haum rau hauv daim iav-mounted lossis dash-mounted daim ntawv yam.

 

 

                          

 

 

Kev sib sau ua ke ntawm automotive recorder boards xav tau kev ntseeg siab nyob rau hauv thermal thiab mechanical stress. Solder paste luam ntawv siv hom 4 lossis Hom 5 hmoov nrog SPI kom muaj qhov sib npaug ntawm cov khoom zoo ntawm lub ntsiab processor thiab lub zog tswj ICs. Reflow yog ua nrog ntau lub qhov cub hauv qab nitrogen, siv qhov profile uas txo qhov voiding nyob rau hauv cov pob BGA loj thaum tiv thaiv kev puas tsuaj los ntawm qhov kub siab. Kev kuaj X-ray yog qhov yuav tsum tau ua rau BGAs thiab cov khoom siv fais fab. Tom qab reflow, xaiv soldering txuas thru-hole connectors (lub koob yees duab inputs, hwj chim, GPS kav hlau txais xov). Tus neeg hlau xaiv txheej txheej neeg hlau siv cov txheej tuab, tsheb-qib sib haum, nrog cov cuab yeej npog ntsej muag tiv thaiv MicroSD qhov chaw tiv tauj, khawm cuam tshuam, thiab cov ntsiab lus xeem. Board depanelization siv routing nrog nkag / thaub qab cov ntaub ntawv kom tsis txhob burrs ntawm nqaim board seem. Kev sib dhos zaum kawg suav nrog kev teeb tsa ntawm tus tuav lub supercapacitor (nrog cov tuav tuav kom zoo), GPS kav hlau txais xov pub-los ntawm cov khoom siv hluav taws xob, thiab cov yeeb nkab LED teeb hla qhov ntsuas qhov ntsuas. Txhua lub rooj tsavxwm tom qab ntawd tau siv lub zog ua haujlwm ntawm lub processor thiab bootloader, tom qab ntawd los ntawm kev tshuaj xyuas zaum kawg hauv qab UV teeb kom paub meej tias txheej txheej ua ntej pib ua haujlwm. Tag nrho cov kauj ruam sib dhos tau ua nyob rau hauv ESD-kev nyab xeeb chaw ua haujlwm nrog cov ntim dej noo-txheej txheem tam sim ntawd.

 

 

Peb cov txheej txheem tsim khoom rau cov tsheb thauj khoom video recorder boards ua raws li cov txheej txheem nruj kom ntseeg tau tias kev lag luam txhim khu kev qha hauv cov tsheb hnyav. Txhua lub Rooj Tswjhwm Saib Xyuas Kev Ntsuas Hauv Circuit Court (ICT) thiab Kev Ntsuas Kev Ua Haujlwm Zoo (FCT) siv lub tsheb simulated ib puag ncig. FCT validates video capture los ntawm ntau lub koob yees duab inputs, H.264/H.265 encoding, GPS teeb liab tau, G-sensor teb, thiab MicroSD sau/nyeem ua tau zoo. Kev ntsuas kev tswj fais fab suav nrog kev ua haujlwm 12V / 24V, kev tiv thaiv kev tiv thaiv kev tiv thaiv kab mob, thiab roj teeb thaub qab / supercapacitor nqi / pov thawj pov thawj.

Peb siv cov kab SMT siab heev nrog 3D SPI, Automated Optical Inspection (AOI), thiab X-ray rau BGA thiab cov pob fais fab. Cov txheej tuab tuab yog siv los tiv thaiv kev co thiab ya raws. Txhua lub rooj tsavxwm dhau 48-teev qhov ntsuas kub ntawm kev caij tsheb kauj vab (-20℃rau +85 degree) nrog cov ntaub ntawv txuas mus ntxiv los tshuaj xyuas qhov ua tsis tiav thaum ntxov thiab txheeb xyuas qhov thermal stability.

Peb cov saw hlau muaj xws li kev cog lus ntev nrog kev tsim tsheb-qib processor thiab cov khoom siv hluav taws xob IC. Lub sij hawm ua tus qauv yog 6-7 lub lis piam rau kev txiav txim ntim. Nrog high-precision kev tso kawm kab thiab mob siab rau automotive xeem racks, peb muaj peev xwm scalable kom tau raws li tom qab kev lag luam thiab OEM ntau lawm cov sij hawm thaum kom ntseeg tau zoo ib yam thiab raws sij hawm tus me nyuam.

 

 

Q: Dab tsi yog qhov tseem ceeb tshaj plaws kev ua tau zoo rau lub dashcam PCBA uas tsis tshua muaj npe nyob rau hauv cov ntaub ntawv?

A:Qhov tseem ceeb tshaj plaws parameter yogpib lub sij hawm mus kaw. A Tsav Tsheb Recorders PCBAyuav tsum pib sau vis dis aus li ntawm 2-3 vib nas this ntawm qhov hluav taws xob hluav taws xob; txwv tsis pub, nws yuav nco thawj lub sijhawm ntawm qhov xwm txheej. Ua kom tiav qhov no yuav tsum tau ceev faj firmware tsim, bootloader uas pib tsuas yog cov khoom siv tseem ceeb, thiab lub zog hluav taws xob uas nce nrawm nrawm. Peb sim qhov no ntawm txhua lub rooj tsavxwm los ntawm kev siv lub zog thiab ntsuas lub sijhawm los ntawm 12V tam sim no mus rau thawj tus ncej. Ib chav tsev tshaj 3 vib nas this raug tsis lees paub, txawm tias tag nrho lwm cov haujlwm dhau los.

Q: Koj ua li cas thiaj lees paub tias G-sensor raug tsim kom muaj qhov xwm txheej kaw yam tsis muaj lub tswb cuav?

Teb:Thaum lub sij hawm FCT, lub rooj tsavxwm tau muab tso rau ntawm lub rooj vibration calibrated. Peb siv cov pulses tshwj xeeb - 2g, 5g, thiab 10g - hauv X, Y, thiab Z axes. Lub rooj tsavxwm yuav tsum kaw cov ntu video tam sim no saum toj ntawm qhov chaw pib (feem ntau 4g) thiab tsis quav ntsej txog kev vibrations qis. Peb kuj sim rhiab heev los ntawm ramping acceleration maj mam; Lub rooj tsavxwm qhov pib yuav tsum nyob rau hauv ± 0.5g ntawm qhov teeb tsa. Tag nrho cov axes thiab ob qho tib si nce / poob npoo raug txheeb xyuas. Qhov kev tshuaj ntsuam no yog automated thiab nkag mus rau ib lub rooj tsavxwm, kom ntseeg tau tias kev ua haujlwm zoo ib yam.

Q: Lub Supercapacitor khaws cov ntaub ntawv muaj kev nyab xeeb thaum lub zog poob tam sim ntawd. Koj ua li cas kuaj nws cov nqi tuav pov hwm yam tsis muaj sijhawm tos?

Teb:Peb ua ibkev kuaj kom nrawm dua. Lub rooj tsavxwm yog powered on, lub supercapacitor yog tag nrho them, thiab lub hwj chim yog txiav tam sim ntawd. Peb ntsuas lub sij hawm lub rooj tsavxwm tseem kaw kom txog thaum lub voltage poob qis dua qhov tsawg kawg nkaus kev khiav hauj lwm theem. Lub rooj tsav xwm dhau los yuav tsum tuav cov ntaub ntawv tsawg kawg 5 vib nas this. Qhov no yog ua tiav siv ib qho kev cai fixture uas teev cov waveform. Cov txiaj ntsig sib raug zoo nrog kev khaws cia ntev ntev; tus nqi capacitance raug txheeb xyuas ntawm kev tshuaj xyuas tuaj, yog li peb tsuas yog xav tau kom paub meej tias lub voj voog ua haujlwm thiab lub sijhawm teem sijhawm raug. Peb kuj xyuas kom meej tias cov ntaub ntawv kaw chij tau teeb tsa hauv qhov clip kaw kawg - tsis muaj cov ntaub ntawv raug tso cai.

 

 

                           

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