Kugadzira PCB Inotakurika Media Player & PCBA yeZvishandiso Zvinoshandisa Manzwi uye Mabhatiri

Muchina weMP3 wakabatana uye muchina wedhijitari weaudio une resolution yepamusoro zvinogona kushandisa mabasa akafanana - kuchengetedza, kudzikamisa uye kubuda kweaudio - asi zvinoda maPCB assembly akasiyana zvikuru. Mumwe anogona kushandisa bhodhi rimwe chete rakaiswa vanhu riri shure kwechidzitiro chidiki. Rimwe rinogona kupatsanura processor yaro, DAC, headphone amplifier uye mativi emabhatani kuti akwane mukamuri rakatetepa kana kusangana nekushanda kwaro kweaudio. Kune mugadziri wePCB, mubvunzo unokosha ndewekuti mabhodhi akabatanidzwa ndeapi ari edhizaini yemuchina weplayer akaburitswa, kwete kuti maficha mangani aripo pane label yechigadzirwa chake.

Highleap Electronics inogadzira maPCB nemaPCBA akagadzirwa nevatengi, anosanganisira odhiyo, main control, display-interface uye mabhodhi ane chekuita nemagetsi. Mabasa edu ekugadzira emagetsi anogona kufukidza kugadzirwa kwePCB isina chinhu, kutenga zvikamu zvakatenderwa, SMT uye kubatanidza kuburikidza negomba, uye kuongororwa kwemapurogiramu kana mashandiro akabvumiranwa. Pfungwa dziri pazasi dzakagadzirirwa kubatsira maOEM zvikwata kutsanangura seti yebhodhi inovakwa, kudzivirira kutsiva zvinhu zvinodhura uye kugadzirira mutengo wekugadzira une revo.

Magungano ePCB Anotakurika eMedia Player neRudzi rweChishandiso

Havasi vese vanoridza ma media vane bhodhi reodhiyo rakasiyana, uye havasi vese zvigadzirwa zvidiki zvinoisa basa rega rega pabhodhi guru rimwe chete. Nzvimbo yacho, interface yemushandisi uye electronics dzakatenderwa zvinosarudza kuti mangani maPCBA anodiwa. Zvirongwa zvekugadzira zvinosanganisira:

• Mitambo yeMP3 yekutanga: Decoder yakabatanidzwa kana bhodhi reMCU rinogona kutakura flash kana microSD storage, headphone output, makiyi uye charger circuitry. Chiratidziro chidiki kana bhatani reFPC rinogona kunge riri iro chete rekubatanidza.
• Michina yekudhinda odhiyo yedhijitari yeHi-res (DAPs): Bhodhi guru re processor rinogona kubatana neDAC yakatsaurirwa, analog output kana headphone-amplifier section. Mamwe magadzirirwo anoshandisa mabhodhi akasindimara akasiyana; mamwe anoparadzanisa nzvimbo idzi paPCB imwe chete. Magadzirirwo chaiwo anotevera chiratidzo chakaburitswa uye dhizaini yemakanika.
• Mavhidhiyo anotakurika uye maMP4 player: Chishandiso chikuru chekugadzirisa display, memory uye vhidhiyo chinogona kuwedzera mapakeji akaomarara, ma display FPC connectors uye bhatani rechipiri kana interface PCB. Module ye display pachayo haisi chikamu chePCBA supply scope.
• Midziyo yekutamba ine chinangwa chakakosha: Magwara ekuratidza ruzha, ma "educational players" uye ma "wireless music terminals" anogona kuwedzera "speaker amplifier", mabhatani akaomarara, Bluetooth/Wi-Fi hardware kana bhodhi rekuchaja sezvakatsanangurwa.

Musiyano uyu unochinja kururama kwekukosha kwekutaura. BOM yebhodhi guru haigone kutenga mutambi wese wetatu-board kunze kwekunge bhodhi reruzha, mubatanidzwa weflex uye zvinongedzo zvavo zvaburitswawo. Kusiyana neizvi, kutaura maPCBA akasiyana ayo OEM yakatobatanidza mubhodhi rimwe chete kunowedzera chiyero chisingadiwi. Kune yuniti yebhodhi-zhinji, taura nhamba yechikamu, kudzokorora uye huwandu hwePCBA yega yega inoshandiswa mumutambo mumwe chete wapera.

Kugadzira PCB Yekuteerera: MaDAC, MaAmplifiers Emahedhifoni uye Hunhu Hwekubuda

Nzira yekuteerera ndiyo iyo PCB assembly yemuchina unotakurika wekutamba odhiyo inoda zvidzoreso zvekugadzira zvakananga kupfuura generic digital controller. Dhizaini yacho inogona kushandisa codec yakabatanidzwa, digital-to-analog converter yakasiyana, analog filter, headphone amplification kana speaker driver. Zvimwe zvingasarudzwa hazvigone kufungidzirwa kubva kune labels dzakadai se "MP3" kana "hi-fi"; schematic uye approved BOM ndiyo inotsanangura circuit.

Ndezvipi zvinhu zvisingafanirwe kutsiviwa zvisina tsarukano?

MaDAC, macodec eaudio, zvinodzora ruzha rushoma, ma amplifier IC, zvikamu zvereferensi, ma oscillator nezvimwe zvikamu zve filter zvinogona kukanganisa gain, output noise, channel behavior kana firmware initialization. Kutsiva kunoenderana nefootprint kungave kuchiri kuda mvumo yeinjiniya. Dambudziko rimwe chetero rinoshandawo kuma headphone sockets: chinongedzo chine nhamba chaiyo ye contacts chinogona kuva ne switching arrangement yakasiyana, insertion height kana mechanical anchor.

Kana mudziyo uine bhodhi reamplifier rakatsaurirwa, nyaya dzekugadzira dzinoenderana nePCB amplifier assembly : zvikamu zveanalog zvinodzorwa, kuchena kwesolder pazvinenge zvakakodzera, grounding yeconnector uye certification pasi pemutoro wakatsanangurwa. Kugadzira kunofanirwa kutevedzera grounding yakatenderwa nevatengi, copper, breaking uye placement pane kuvimbisa kugadzirisa dhizaini ine ruzha kuburikidza neSMT chete.

Kuongorora mimhanzi inongosimbisa kuti inonzwika kunogona kukanganisa nzira dze stereo dzakadzoserwa kumashure, kuwedzera kwesimba remuchina, kupindirana kwejack pakati pemagetsi kana ruzha rwekuchinja kubva pachiratidziro nechaja. Kana OEM ichida kuti zvikanganiso izvi zviongororwe, inofanira kutsanangura mafaira ekuyedza kana matoni, zvinobatanidza zvinobuda, mitoro yekutarisa, marongero evhoriyamu uye miganhu. Ruzha nenhamba dzekuchinja hadzifanirwe kugadzirwa semhedzisiro yakajairika yekuongorora kwePCBA.

Mabhodhi Makuru, Kuchengetera Zvinhu, uye Kubatana Kwezviratidziro

Processor yemutambi wemedia, flash kana eMMC, soketi yemicroSD uye display zvakabatana nezvinhu zvinopfuura kungodhirowa nzvimbo chete. Kuchinja kwechikamu chekuchengetera kunogona kukanganisa magadzirirwo eboot, nguva, zvinodiwa pamagetsi uye kuenderana nefirmware. Kune media inobviswa, soketi ine zvinodiwawo zvemuviri: kutarisana nekadhi, kuchengetedza, kuona ma contacts kana akaiswa uye kurongeka nekuvhurwa kwe enclosure.

Musanganiswa wePCB weMP3 player wakagadzirira kugadzirwa unofanirwa kuona kana firmware yakatoiswa mundangariro yakapihwa, yakarongwa mushure mekudzokororwa kana kuiswa panguva yekugadzirwa kwekupedzisira kwemudziyo. Kana huwandu hwakawanda kana shanduro dzemusika dzine dhizaini yakafanana yemhangura, BOM, mufananidzo wefirmware uye test media zvinofanirwa kuzvisiyanisa. Idzi imhando dzakasiyana dzekuvaka, kunyangwe kana nhamba yePCB isina chinhu yakafanana.

PCB yakasiyana inonzwisisika rini?

Chiratidziro chakamanikana, mabhatani akaiswa padivi kana imba yakatetepa zvingada muswe unochinjika kana bhodhi rekudzora rakasiyana. Muzvigadzirwa zvakadaro, mubatanidzwa wePCB unochinjika unova wakakodzera pakuiswa kwezvikamu, nzvimbo yekusimbira, kuiswa kweFPC uye kupetwa kwaunoda panguva yekuisa. Kupetwa kwekuisa kwakasimba kwakasiyana netambo inokotama kakawanda panguva yekushandiswa; kuvakwa kweflex kwakaburitswa kunofanirwa kuenderana nebasa rayo.

Pamuenzaniso wekutanga wakagadzirwa, tarisa kana chinobatanidza chinongedzo, mabhatani, chinodzora vhoriyamu uye jack yehedhifoni zvichienderana nenzvimbo dzazvo chaidzo dzemakanika. PCBA inoshanda nemagetsi inogona kusashanda kana chinobatanidza chinochinjika chikatarisana nenzira isiriyo kana kuti switch yedivi ikarasikirwa neactuator yayo.

Kuchaja Bhatiri uye Kutarisira Simba reVatambi Vanotakurika

Mazhinji evatambi vanoshandisa bhatiri ane mamiriro akasiyana-siyana ekushanda: kutanga, kuskena raibhurari, kutamba nechidzitiro chakadzima, kutamba nechidzitiro chichishanda, kuchaja uye kumira. Simba harishandiswi zvakaenzana mune zvese. Chinongedzo chemagetsi kana cheUSB chinopasa kuongororwa kwe "no-load" chinogona kuita zvakasiyana kana amplifier, interface yekuchengetera uye chiratidziro zvichishanda pamwe chete.

IC yekuchaja, chinongedzo chebhatiri, thermistor input, zvikamu zvekudzivirira uye zvikamu zvemagetsi zvinofanirwa kutevedzera dhizaini yemagetsi yakatenderwa. Bhodhi rekutarisira bhatiri rakasiyana rinogoneka asi harisi chinodiwa chevatambi vadiki; kuchaja nekudzivirira zvinowanzo batanidzwa muPCB huru kana pack yebhatiri. Saka hurukuro yakakosha yekugadzira ndeyekugadzirwa kwePCB yekuchaja bhatiri uye kuunganidza circuitry yesimba rakatarwa, kwete fungidziro yekuti mudziyo wega wega une BMS yakazvimirira.

Usati wataura mashandiro ekuyedza, tsvaga bhatiri kana simulator yesimba inotenderwa, kwainobva charging uye mamiriro ekugamuchira anotarisirwa. Kana mutambi ane Bluetooth kana Wi-Fi, antenna keep-outs uye redhiyo configuration zvinofanirawo kutevera kuburitswa. Kutsungirira kwebhatiri rakapedzwa uye bvunzo dzemutemo dzisina waya zvakasiyana nekugamuchirwa kwebhodhi-level kunze kwekunge zvataurwa pachena.

Kubva paSMT Assembly kuenda paRepeatable Playback Test

PCBA inotakurika media player inogona kunge iine maQFN anopinza zvakanaka, ma processor kana memory package ane majoini akavanzwa, ma analog passives madiki, ma headphone connectors akasimbiswa uye masoketi anochinjika. Chirongwa chekugadzira chinotarisa musanganiswa chaiwo wepakeji, zvinodiwa nehunyoro hwezvikamu, rutsigiro rwebhodhi, mashandiro ekubatanidza mushure mekudzokororwa uye kufukidza kwekuongorora kwakakodzera zvikamu izvozvo. AOI kana kuongorora kwekuona kunowana zvikanganiso zvakawanda zvekuisa uye kusona, asi hazvigone kuratidza kuti odhiyo inotamba nemazvo kuburikidza nechinhu chakasarudzwa.

Nzira inobatsira yekugamuchira mutambi asunungurwa

1. Ziva chivakwa chacho: Simbisai kugadziriswa kwePCB/BOM, audio IC uye memory configuration, uye firmware version apo mapurogiramu anobatanidzwa.
2. Kuchengetera zvinhu zveboot neaccess: Tanga bhodhi kana musangano wekuyedza wakabvumiranwa woverenga faira rinozivikanwa kubva mudura remukati rakatarwa kana kadhi rinobviswa.
3. Simbisa kutamba: Tarisa maearphone kana speaker aunoda kushandisa, mapping yeruboshwe/kurudyi, mute uye maitiro evhoriyamu pasi pemutoro wekuyedza wakatenderwa.
4. Dzidzira mashandisirwo emushandisi: Simbisa mabhatani akagadzirwa, display, card-detect uye USB kana wireless functions zvichienderana nerudzi rwechigadzirwa.
5. Tarisa maitiro esimba: Simbisai kuti playback, charging uye standby conditions zvinotsanangurwa nemutengi uye chero kudzoreredzwa kwepower-cycle kunodiwa.

Fekitori haifanirwe kuita zvese zviri pamusoro apa papurojekiti yega yega; bvunzo yacho inoenderana nezvakaunganidzwa, zvinowanikwa uye zviri mukotesheni. Highleap inogona kukurukura nezvekuyedzwa kwebasa rePCB assembly zvichienderana nefirmware yakabvumiranwa, mafaira ereferensi, zvigadziriso uye miganhu. Kugadziriswa kwakadzama kweacoustic, qualification yehupenyu hwebhatiri uye chitupa chakazara chewireless zvinoramba zviri basa repamusoro pechigadzirwa kunze kwekunge chibvumirano chakasiyana.

Usati wadzokorora, chengeta hardware yakagamuchirwa yakagadziriswa, zvikamu zveaudio nememory zvakatenderwa, mufananidzo weprogramming, output-load fixture uye test script pamwe chete. Zvikasadaro mudziyo mutsva wememory kana codec revision zvinogona kukonzera functional-test failure iyo inoita se soldering fault. Kuchinja kunoteverwa kunobatsira kupfuura kuwedzera matanho ekuongorora pasina defined failure mode.

Zvekutumira Kuti Uwane Mutengo wePCBA wePortable Media Player

Mutengo unonyanya kubatsira unosiyanisa maPCB asina chinhu, maPCBA ane vanhu vakawanda uye chero imwe module yekuisa . Mutengi anongoda mabhodhi ekuteerera neodhiyo chete haafanire kubhadhara kubatanidzwa kwenzvimbo; saizvozvowo, mutengo wePCB imwe chete haufanire kusiya bhatani rinodiwa kana sub-board yekuchaja chinyararire.

• Nhema: Gerber, ODB++ kana IPC-2581 data, bhodhi, muunganidzwa, ukobvu, kupedzisa kwenzvimbo uye chero kupikiswa kana manotsi ekuchinjika.
• Assembly: BOM ine nhamba dzezvikamu zvemugadziri dzakatenderwa, data rekuisa zvikamu, mifananidzo yekuunganidza, ruzivo rwekuti hazvifaniri kuzadzwa uye chero zvikamu zvakatumirwa.
• Zvigadzirwa zvemagetsi zvevatambi: Kodhi/DAC, amplifier uye ma processor identity; specifications dzekuchengetedza nekuratidza; connector/FPC drawings; bhatiri neruzivo rwekuchaja.
• Kuronga uye kugamuchirwa: Mafaira eFirmware/configuration kana zvichidikanwa, mafaira ekutarisa playback, mahedhifoni kana electronic loads, mirairo ye fixture uye zvinodiwa zvekupasa/kukundikana.
• Kuwanda kwekutengeserana: Mabhodhi anodiwa pamutambo wega wega wapera, huwandu hweinjiniya-muenzaniso, mabheti ekugadzirwa akarongwa, nzvimbo yekuendesa uye zvinhu zvichapihwa neOEM.

Pakugadzira kekutanga, kutenga zvinhu zvishoma, nguva yekugadzirisa uye kugadzirira michina zvinogona kudhura zvakanyanya. Kune maodha akadzokororwa, kuenzanisa kunobatsira zvikuru imutengo webhodhi rese, kuenderera mberi kwezvinhu uye nguva yekuedza pasi pekugadzirisa kwakatarwa. Chinhu chinotsiva chakachipa chinochinja nzira yekuteerera kana firmware chinogona kugadzira mutengo wakawanda kupfuura wainochengetedza.

Kana mumwe mutengesi achizoronga kugadzirwa kwebhodhi, kutenga zvikamu zvakatenderwa uye kubatanidzwa, gungano reHighleap rePCB rinogona kutengwa kune seti yebhodhi yakaburitswa. Kutumira pasuru yakazara inoenderana nevatambi kunoita kuti zvikwanisike kukurukura odha chaiyo yekugadzira pane mutengo usina kutsanangurwa we "MP3 player board".