Project Overview
Kuratidzwa kwepurojekiti yePersonal Digital Assistant (PDA) Wonderful PCBkugona kwakazara kwekugadzira zvishandiso zvemaoko zvemhando yepamusoro. Chidzidzo ichi chinotsanangura kugadzirwa kwakazara kwechiteshi chemagetsi cheindasitiri chakagadzirirwa kuunganidza data, kutaurirana, uye manejimendi ebasa munzvimbo dzehunyanzvi dzinosanganisira kuchengetera zvinhu, zvitoro, basa remumunda, uye hutano.
Wonderful PCB Yakapa masevhisi ekugadzirisa zvinhu kubva pakutanga kusvika pakupedzisira anosanganisira dhizaini yemidziyo yemagetsi, kurongeka uye kugadzirwa kwePCB ine layer yakawanda, kuunganidzwa kwePCBA nezvikamu zveSMT neBGA, uye maprotocol ekuyedza akazara. Iyi nzira yakabatana yakagonesa mutengi kugadzirisa budiriro, kuderedza kudyidzana, uye kukurumidzisa nguva yekuenda kumusika uku achichengetedza mwero wakasimba wehunhu.
Zvinhu zvinounzwa nepurojekiti zvaisanganisira: dhizaini yakakwana yezvivakwa zvehardware uye sarudzo yezvikamu, dhizaini yekugadzira nekugadzira yeHDI PCB ine layer 8, SMT/BGA assembly ine >98% first-pass goeder, bvunzo inoshanda uye yekuvimbika, uye kugadzirisa dhizaini yekugadzira huwandu.
Zvinodiwa neVatengi uye Matambudziko
Muenzaniso wemuenzaniso unotsanangurwa pano. Mutengi aida terminal yakasimba inobatwa nemaoko inokwanisa kushanda zvakanaka munzvimbo dzinodiwa maindasitiri. Zvinhu zvakakosha zvinosanganisira: ARM Cortex-A processor ine 2GB RAM uye 16GB yekuchengetera, touchscreen inoverengwa nechiedza chezuva ye5-inch (450+ nits), 1D/2D barcode scanner yakabatanidzwa, dual-band Wi-Fi neBluetooth 5.0, 4G LTE yekubatanidza, 4000mAh bhatiri rinopa kushanda kwemaawa anopfuura gumi, IP65 inodzivirira guruva nemvura, uye 1.5-meter inodzivirira kudonha.
Matambudziko Makuru Ehunyanzvi:
Purojekiti iyi yakapa matambudziko makuru einjiniya. Chikamu chakasimba (150mm × 75mm × 20mm) chaida huwandu hwakanyanya hwezvikamu zvine zvikamu zvinopfuura 500 paPCB huru ukuwo zvichichengetedza kusimba kwechiratidzo uye kutonga kwekupisa. Kushanda kweWi-Fi, Bluetooth, uye LTE panguva imwe chete kwaida dhizaini yekungwarira yeRF kudzivirira kupindira uye kuve nechokwadi chekuti FCC/CE inotevedzera. Kuwana hupenyu hwebhatiri hwemaawa anopfuura gumi kunoda manejimendi emagetsi akaomarara ane ma voltage domains akawanda uye dynamic power scaling. Huwandu hwakawanda hwezvikamu zvine ma BGA package makuru uye zvikamu zve fine-pitch (0.4mm pitch) zvaida kugadzirwa kwakanyatsonaka kwekugadzira kuti zvitsigire kugadzirwa kwe otomatiki nekubudirira kukuru.
Wonderful PCB's Solution
1 Dhizaini yeZvivakwa zveHardware
Magadzirirwo emidziyo iyi akavakirwa pa processor yeARM Cortex-A quad-core inoshanda zvakanyanya yakagadzirirwa kushandiswa pamafoni. Dhizaini iyi yakabatanidza 2GB LPDDR4 RAM kuti ishande zvakanaka, 16GB eMMC storage ine microSD expansion ability, multi-channel PMIC inopa simba rekutonga zvakanaka, Wi-Fi/Bluetooth combo module ine certification inoderedza njodzi yekugadzira RF, uye LTE modem ine global band coverage. Peripheral interfaces yaisanganisira USB Type-C ine Power Delivery support, UART yakatsaurirwa yekubatanidza barcode scanner, uye ESD protection yakazara pane zvese zvekunze.
2 Kugadzira uye Kurongeka kwePCB
PCB stackup ine layer 8 yakapa signal perfection yakakwana uye simba rayo. Layer 1 (Yepamusoro) yaibata nzvimbo ye high-density component uye routing. Layer 2 ne7 dzaishanda senzvimbo dzakasimba dzepasi kuti zviratidzo zvidzoke uye EMI shielding. Layer 3 ne6 dzaitungamira high-speed differential pairs uye critical signals. Layer 4 ne5 dzaigovera simba ne low impedance. Layer 8 (Yepasi) yaitakura zvimwe zvikamu uye routing.
Zvinhu zvakakosha zvekugadzira zvinosanganisira ma DDR4 traces akafanana nehurefu, achichengetedza ±25 mils kuti akwanise kushanda zvakanaka, 50Ω controlled impedance yemasaini eUSB neRF, strategic RF module placement paboard edges ne ground vias dzakatsaurirwa uye keep-out zones, comprehensive power distribution network ne strategic decoupling capacitor placement, uye thermal vias inobatanidza processor thermal pad ne internal ground planes kuti iparadze kupisa.
3 Kugadzira PCB
Wonderful PCBNzvimbo yekugadzira zvinhu mukati meimba yakagadzira mapuranga ane 8-layer ane 5mil/5mil trace/space ability, 1oz copper huremu (2oz on power layers), ENIG surface finish kuti ive nyore kusanganisa, uye controlled impedance tolerance mukati me ±10%. Kudzora mhando kwaisanganisira automated optical inspection (AOI) detecting trace defects, flying probe electrical testing continuity and isolation, time-domain reflectometry (TDR) validating controlled impedance, uye microsection analysis ichisimbisa internal layer quality and registration.
Kuungana kwePCBA uye Kuwanikwa kweZvikamu
Kuungana kwePCBA kwakashandisa michina yepamusoro yeSMT ichiisa zvinhu zvinodarika 50,000 paawa zvine kugona kudzika kusvika pa 0.3mm pitch. Maitiro acho aisanganisira kudhinda kwe solder paste nemazvo neSPI verification, otomatiki pick-and-place ine submicron accuracy yezvikamu zveBGA, lead-free flow soldering mumhepo ine nitrogen, uye X-ray inspection ichisimbisa mhando yeBGA solder joint. Kudzora mhando dzezvikamu zvakawanda kwakawana >98% first pass good mushure mekugadzirisa maitiro.
Kutsvaga zvikamu kwakabatsira hukama nevagovanisi vane mvumo (Arrow, Avnet, Digi-Key) zvichiita kuti zvikamu zvechokwadi zvinyatsoteverwa. MaIC akakosha akawanikwa chete kubva mumigwagwa ine mvumo akabvisa njodzi yekunyepera. Sarudzo dzechipiri dzakatsanangurwa dzezvikamu zvisingashande dzakapa mukana wekuchinja-chinja kwecheni yekugovera. Kudzora hunhu huri kuuya kwakasimbisa chokwadi chezvikamu zvisati zvagamuchirwa muchitoro.
Kuedza uye Kudzora Kwemhando
Kushanda kwekuyedza kwakazara kwakasimbisa kuvimbika kwechigadzirwa. Kuedza kunoshanda kwakasimbiswa boot yesystem, calibration ye touchscreen, mashandiro ebarcode scanner pazviratidzo zvese zvakajairika, mashandiro ebhatani/LED, uye kutamiswa uye kuchajwa kwedata re USB. Kuyedzwa kwekutaurirana pasina waya kwakayera mashandiro eWi-Fi/Bluetooth RF mumakamuri akavharirwa, kusimbisa simba rekubuda, kunzwisiswa kwekugamuchira, uye throughput yedata zvichienzaniswa neIEEE 802.11 specs. Kuyedzwa kweLTE cellular (sarudzo dzemhando) kwakasimbisa bhendi uye kuenderana kwecarrier.
Kuyedzwa kwesimba nebhatiri kwakayera mapurofayiri emagetsi emagetsi, kusimbiswa kwenguva yekumhanya (kusvika maawa gumi nemaviri kana kupfuura), uye kusimbiswa kwenzvimbo dzekuchengetedza bhatiri. Kuyedzwa kwezvakatipoteredza uye kuvimbika kwaisanganisira kutenderera kwekushisa (-10°C kusvika +50°C), kuyedzwa kwekudonha (1.5 metres, madonhwe makumi maviri nematanhatu paIEC 60068-2-32), kuyedzwa kwekuzunguzika paIEC 60068-2-64, kusimbiswa kweIP65 kuburikidza nekuyedzwa kweguruva newater spray, uye kukurumidza kukwegura pakupisa kwakakwira.
Zviyero zvemhando yepamusoro zvakaratidza kukura kwekugadzirwa: Kubudirira Kwekutanga >98%, DOA Rate <0.5%, Kukundikana Kwemunda <1% mukati memazuva makumi mapfumbamwe, uye hapana zvikanganiso zvakakosha mukutumira kwemuchina wekuyedza.
Zvimiro zveChigadzirwa Chekupedzisira
PDA yekupedzisira yakapa hunyanzvi hwakasiyana: ARM Cortex-A quad-core @ 1.5GHz ine 2GB LPDDR4 RAM uye 16GB eMMC storage (inogona kuwedzerwa kusvika 128GB), touchscreen ye5.0-inch capacitive (1280×720, 450 nits, 10-point multi-touch), 1D/2D barcode scanner yakabatanidzwa (5cm kusvika 50cm range), dual-band Wi-Fi 802.11ac uye Bluetooth 5.0 ine 4G LTE yesarudzo, USB Type-C ine Power Delivery charging, 4000mAh bhatiri rinopa maawa gumi kusvika gumi nemaviri ekushanda, IP65 guruva nemvura, -10°C kusvika +50°C operating tembiricha, uye 1.5-meter drop resistance.
Zvakanakira zvikuru zvechigadzirwa ichi zvaisanganisira kushanda zvakanaka kubva mukubatanidzwa kwehardware/software, hupenyu hwebhatiri hwakasimba muindasitiri kuburikidza nekutonga kwesimba kwakasimba, kubatana kwakasimba kweRF kuchengetedza masaini akasimba munzvimbo dzakaoma, kuvaka kwakasimba kunodzivirira kushandiswa zvisina kunaka kwezuva nezuva munzvimbo dzemaindasitiri, uye dhizaini ye ergonomic iyo inoita kuti ishande zvakanaka neruoko rumwe chete panguva yekuchinjana kwenguva refu.
Mhedzisiro yeProjekiti uye Mabhenefiti
Nzira yekuvandudza yakabatana yakaunza kukosha kukuru kwevatengi. Kubudirira kwekuvandudza kwakavandudzwa kuburikidza nekuzvidavirira kwechinhu chimwe chete, kubvisa kurongeka kwemari yekutengeserana kwevatengesi vakawanda uye kuderedza nguva yakatarwa ne25-30% zvichienzaniswa nemapurojekiti apfuura. Kugadzirisa mitengo kwakawana kuchengetedza kwe15-20% kuburikidza nekutsvaga kwakabatana, kugadzira mukati mekambani kudzivirira mari yekunze, uye goho guru rekutanga richideredza mari yekugadzirisa patsva.
Hunhu uye kuenderana kwakaramba kuri pamusoro pezvikamu zvemuenzaniso nekugadzira. Zvikamu zvemuenzaniso zvakaratidza mashandiro ekugadzira nemazvo, zvichidzivirira mamiriro ezvinhu akajairika apo zvimiro zvemuenzaniso zvinoshanda asi zvikamu zvekugadzira zvichikundikana. Zviyero zvekubudirira kwehunyanzvi zvaisanganisira: mwedzi 7 kubva pakugadzirwa kwepfungwa kusvika pakugadzirwa kwekutanga, kudzokororwa kwemidziyo miviri chete kwaidiwa, goho rekugadzira riri >98%, <0.5% DOA rate, <1% field failure rate mukati memazuva makumi mapfumbamwe, hupenyu hwebhatiri hwemaawa gumi nemaviri hunopfuura zvinangwa, uye chitupa cheFCC/CE chakabudirira pakutumirwa kwekutanga.
Sei Wonderful PCB
Wonderful PCB inopa zvakanakira zvakakwana pakugadzira zvigadzirwa zvemagetsi. Mhinduro yedu yechinhu chimwe chete inobvisa kuoma kwekubatanidza vatengesi, ichipa dhizaini yemagetsi, kugadzira PCB, kuunganidza PCBA, kuwana zvikamu, kuyedza, uye rutsigiro rweinjiniya pasi pedenga rimwe chete. Zvivako zvekugadzira mukati zvinovimbisa kutonga kwakananga kwemhando, kugona kwekugadzira prototyping nekukurumidza, uye kuronga nguva inochinjika. Matimu einjiniya ane ruzivo anounza hunyanzvi mukugadzira kwedhijitari nekukurumidza, maRF circuits, manejimendi yesimba, dhizaini yekupisa, uye kutevedzera EMC/EMI. Hukama hwakasimba hwekuwana zvikamu nevagovanisi vakuru hunochengetedza zvikamu zvechokwadi pamitengo inokwikwidzana. Rutsigiro rwekugadzira runochinjika runoyera kubva pahuwandu hweprototype (5-10 mayuniti) kuburikidza nekugadzira huwandu (zviuru pamwedzi), zvichibvumira vatengi kutanga vadiki uye kukura zvishoma nezvishoma vasina kuchinja vatengesi.
Scenarios Zvekushandisa
Puratifomu yePDA inotarisa pane zvinodiwa zvakasiyana-siyana pamusika. Kutakura zvinhu nekuchengetedza zvinhu zvinoshandisa mudziyo uyu kuteedzera zvinhu zviri mudura, kugamuchira/kutumira, uye kusarudza maodha neruzivo rwechizvino-zvino rusina waya. Zvitoro zvinotengesa zvinoishandisa kuonesa mitengo, kutarisa zvinhu zviri mudura, uye kubhadhara nefoni. Mainjiniya ebasa remumunda vanowana magwaro, kunyora zviitiko, uye kuona zvikamu zvakavimbika. Zvivako zvehutano zvinoishandisa kuonesa murwere, kusimbisa mishonga, uye kuteesa sampuli nezvinhu zvinoenderana nemishonga inorwisa utachiona. Kugadzira kunoishandisa kuonesa mirairo yebasa, kuunganidzwa kwedata rekudzora hunhu, uye kuonesa kuunganidza. Makambani ekufambisa anoishandisa kuonesa mapakeji, kusimbiswa kwekutumira, uye kugadzirisa nzira dzinoshandiswa neGPS. Magadzirirwo anochinjika anotsigira kugadzirisa uku achichengetedza midziyo yemagetsi inodzora mitengo yekuvandudza.
mhedziso
Chidzidzo chePDA ichi chinoratidza Wonderful PCBKugona kwakazara kwekupa zvishandiso zvemagetsi zvemaoko zvakagadzirwa nemaoko kubva papfungwa kusvika pakugadzira vhoriyamu. Zvinhu zvakadaro zvakabudirira kukunda matambudziko makuru ehunyanzvi anosanganisira dhizaini yenzvimbo ine huwandu hwakanyanya, kugara pamwe chete kweRF mudzimba dzakatetepa, zvinodiwa zvehupenyu hwebhatiri hwakareba, uye kugadzirwa kwehuwandu hwakawanda negoho guru. Zvinhu zvikuru zvaisanganisira kushanda pamwe chete kweinjiniya, nzira yakakwana yekugadzira-yekugadzira, kudzora mhando mukati, maitiro ekuyedza akaomarara, uye rutsigiro rwekugadzira runochinjika. Chigadzirwa chakabuda chakasangana nezvose zvinodiwa uku chichipfuura zvinangwa zvekushanda, chichigadzira Wonderful PCB semubatsiri wekugadzira akavimbika kwenguva refu.
Kana uri kugadzira mudziyo unobatwa nemaoko, mudziyo unotakurika, kana puratifomu yemakombiyuta inotakurika, Wonderful PCB yakagadzirira kutsigira purojekiti yenyu nemabasa ekugadzira nekugadzira akazara. Bata nesu kuti mukurukure zvamunoda, mugamuchire mazano enyanzvi, uye muwane makotesheni emasevhisi ekugadzira, ma prototypes, kana huwandu hwezvigadzirwa.
