Maitiro ekunyatso prototype PCB ine EMI/EMC inodzivirira

Munyika inogara ichishanduka yemagetsi, PCB (Printed Circuit Board) prototyping neEMI/EMC (Electromagnetic Interference/Electromagnetic Compatibility) kudzivirira kuri kuramba kuchikosha. Nhoo idzi dzakagadzirirwa kudzikisira mwaranzi yemagetsi uye ruzha rwunoburitswa nemagetsi, kuve nechokwadi chekushanda kwavo kwakaringana uye kutevedzera mitemo.

Nekudaro, mainjiniya mazhinji uye hobbyists vanonetsekana kuwana inoshanda EMI/EMC kudzivirira panguva yePCB prototyping nhanho.Mune ino blog post, isu tichakurukura matanho anobatanidzwa mukubudirira prototyping PCB ine EMI/EMC inodzivirira, ichikupa iwe ruzivo rwunodiwa kuti ukunde chero matambudziko aungasangana nawo.

1. Nzwisisa EMI/EMC kudzivirira

Chekutanga, zvakakosha kuti ubate iwo ekutanga pfungwa dzeEMI/EMC kudzivirira. EMI inoreva simba remagetsi risingadiwe iro rinogona kukanganisa kushanda kwakajairwa kwemidziyo yemagetsi, nepo EMC ichireva kugona kwechigadzirwa kushanda mukati menzvimbo yemagetsi pasina kukanganisa.

EMI/EMC kudzivirira kunosanganisira mazano uye zvinhu zvinobatsira kudzivirira magetsi emagetsi kubva pakufamba uye kukonzera kukanganisa. Kudzivirira kunogona kuwanikwa nekushandisa conductive zvinhu, sesimbi foil kana conductive pendi, iyo inoumba chipingamupinyi chakatenderedza PCB gungano.

2. Sarudza chinhu chakakodzera chekudzivirira

Kusarudza iyo chaiyo yekudzivirira zvinhu kwakakosha kune inoshanda EMI/EMC dziviriro. Zvishandiso zvekudzivirira zvinowanzoshandiswa zvinosanganisira mhangura, aluminium uye simbi. Mhangura inonyanya kufarirwa nekuda kwekunaka kwayo kwemagetsi conductivity. Nekudaro, zvimwe zvinhu zvinofanirwa kutariswa pakusarudza zvinhu zvekudzivirira, senge mutengo, uremu uye nyore kwekugadzira.

3. Ronga PCB marongerwo

Munguva yePCB prototyping nhanho, kuiswa kwechikamu uye kutaridzika kunofanirwa kunyatsotariswa. Kurongeka kwakakodzera kwePCB kunogona kuderedza zvakanyanya matambudziko eEMI/EMC. Kubatanidza ma-high-frequency zvikamu pamwe chete uye kuzvipatsanura kubva kune zvinonzwisa tsitsi kunobatsira kudzivirira electromagnetic coupling.

4. Shandisa maitiro ekugadzirisa pasi

Maitiro ekudzika anoita basa rakakosha mukudzikisa nyaya dzeEMI/EMC. Kudzika kwakakodzera kunovimbisa kuti zvese zviri mukati mePCB zvakabatana kune yakajairwa referensi poindi, nekudaro kuderedza njodzi yepasi zvishwe uye kukanganiswa kweruzha. Ndege yakasimba yepasi inofanirwa kugadzirwa paPCB uye zvese zvakakosha zvikamu zvakabatana nayo.

5. Shandisa teknolojia yekudzivirira

Pamusoro pekusarudza zvinhu zvakanaka, kushandisa nzira dzekudzivirira kwakakosha kudzikisira nyaya dzeEMI/EMC. Matekinoroji aya anosanganisira kushandisa kudzivirira pakati pemasekete anoomesesa, kuisa zvikamu mumavhu akavharirwa, uye kushandisa magaba akavharidzirwa kana mavharo ekuzviparadzanisa nemuviri zvinhu zvinonetsa.

6. Gadzirisa kutendeseka kwechiratidzo

Kuchengetedza kutendeseka kwechiratidzo kwakakosha kudzivirira kukanganiswa kwemagetsi. Kushandisa nzira dzakakodzera dzemasaini ekufambisa, senge kusiyanisa kusaina uye inodzorwa impedance routing, inogona kubatsira kudzikisa chiratidzo chekudzikira nekuda kwekunze kwemagetsi emagetsi.

7. Edzai uye dzokorora

Mushure mekunge prototype yePCB yaunganidzwa, kuita kwayo EMI/EMC kunofanirwa kuedzwa. Nzira dzakasiyana-siyana, dzakaita sekuyedzwa kwekuburitsa uye susceptibility bvunzo, dzinogona kubatsira kuongorora kushanda kwehunyanzvi hwekudzivirira hunoshandiswa. Zvichienderana nemhedzisiro yebvunzo, kudzokorora kwakakodzera kunogona kuitwa kuvandudza kushanda kwekudzivirira.

8. Shandisa zvishandiso zveEDA

Kushandisa zvemagetsi dhizaini otomatiki (EDA) maturusi anogona kurerutsa zvakanyanya PCB prototyping maitiro uye rubatsiro muEMI/EMC kudzivirira. Zvishandiso zveEDA zvinopa hunyanzvi hwakadai seye electromagnetic field simulation, chiratidzo chekuvimbika kwekuongorora, uye chikamu chekugadzirisa dhizaini, zvichibvumira mainjiniya kuona zvingangoitika uye kukwenenzvera dhizaini yavo isati yagadzirwa.

Muchidimbu

Kugadzira PCB prototypes ine inoshanda EMI/EMC kudzivirira kwakakosha kuti ive nechokwadi chekushanda kwakaringana uye kutevedzera mitemo.Nekunzwisisa iwo akakosha pfungwa dzeEMI/EMC kudzivirira, kusarudza zvinhu zvakakodzera, kushandisa matekiniki akakodzera, uye kushandisa maturusi eEDA, mainjiniya nevanoita zvekuzvivaraidza vanogona kubudirira kukunda matambudziko echikamu ichi chakakosha chekuvandudza PCB. Saka kumbundira maitiro aya uye tanga yako PCB prototyping rwendo nechivimbo!