Ibitekerezo byo kubahiriza EMI / EMC muburyo bukomeye bwa flex circuit

Muri iyi nyandiko ya blog, tuzaganira kubitekerezo bya EMI / EMC byubahirizwa kubibaho byumuzunguruko bikabije n'impamvu bigomba gukemurwa.

Kugenzura niba hubahirizwa amashanyarazi (EMI) hamwe na electromagnetic ihuza (EMC) ningirakamaro kubikoresho bya elegitoronike n'imikorere yabyo. Mu nganda za PCB (Icapiro ryumuzunguruko wacapwe), imbaho ​​zumuzunguruko zikomeye ni agace kihariye gasaba gutekereza neza no kwitondera amakuru arambuye. Izi mbaho ​​zihuza ibyiza byumuzunguruko ukomeye kandi woroshye, bigatuma uhitamo gukundwa kubisabwa aho umwanya ari muto kandi biramba.

Icyifuzo cyibanze cyo kugera kuri EMI / EMC kubahiriza imbaho ​​zumuzunguruko zikomeye ni ishingiro ryiza.Indege zo hasi no gukingira bigomba gutegurwa neza hanyuma bigashyirwa kugirango hagabanuke imirasire ya EMI no kurinda EMC cyane. Nibyingenzi gushiraho inzira-impedance yinzira ya EMI no kugabanya ingaruka zayo kumuzunguruko. Mugukomeza sisitemu ihamye muburyo bwumuzunguruko, ibyago byibibazo bifitanye isano na EMI birashobora kugabanuka cyane.

Ikindi kintu ugomba gusuzuma ni ugushira no kuyobora ibimenyetso byihuta. Ibimenyetso hamwe no kuzamuka byihuse nigihe cyo kugwa birashoboka cyane kumirasire ya EMI kandi birashobora kubangamira ibindi bice kurubaho.Mugutandukanya witonze ibimenyetso byihuta nibice byoroshye nkibice bisa, ibyago byo kwivanga birashobora kugabanuka. Byongeye kandi, gukoresha tekinoroji yerekana ibimenyetso bitandukanye birashobora kurushaho kunoza imikorere ya EMI / EMC kuko bitanga ubudahangarwa bw urusaku ugereranije nibimenyetso birangirira.

Guhitamo ibice ningirakamaro kuri EMI / EMC kubahiriza imbaho ​​zumuzingi zikomeye.Guhitamo ibice bifite imiterere ya EMI / EMC ikwiye, nkibisohoka EMI nkeya hamwe nubudahangarwa bwiza bwo kwivanga hanze, birashobora kunoza cyane imikorere yubuyobozi. Ibigize bifite ubushobozi bwubatswe muri EMI / EMC, nka filteri ihuriweho cyangwa gukingira, birashobora kurushaho koroshya uburyo bwo gushushanya no kwemeza kubahiriza ibipimo ngenderwaho.

Gukingira neza no gukingira nabyo ni ngombwa kwitabwaho. Mubibaho byumuzunguruko bigoye, ibice byoroshye birashobora guhangayikishwa nubukanishi kandi birashoboka cyane kumirasire ya EMI.Kugenzura niba ibice byoroshye bikingiwe bihagije kandi bikarindwa birashobora gufasha gukumira ibibazo bijyanye na EMI. Byongeye kandi, kwifata neza hagati yimyitwarire hamwe nibimenyetso bigabanya ibyago byo kwambukiranya inzira no kwangiriza ibimenyetso.

Abashushanya bagomba kandi kwitondera imiterere rusange hamwe na stackup yibibaho bikomeye. Mugutegura neza ibice bitandukanye nibigize, imikorere ya EMI / EMC irashobora kugenzurwa neza.Ibimenyetso byerekana ibimenyetso bigomba gushyirwa hagati yubutaka cyangwa ingufu kugirango bigabanye guhuza ibimenyetso no kugabanya ibyago byo kwivanga. Byongeye kandi, ukoresheje amabwiriza ya EMI / EMC igishushanyo mbonera gishobora gufasha kwemeza ko imiterere yawe yujuje ibisabwa.

Kwipimisha no kwemeza bigira uruhare runini mugushikira EMI / EMC kubahiriza ibibaho byumuzunguruko.Igishushanyo cyambere kirangiye, hagomba gukorwa ibizamini byuzuye kugirango hamenyekane imikorere yubuyobozi. Ikizamini cya EMI gipima urugero rw'imirasire ya electromagnetiki itangwa n'akanama k'umuzunguruko, mu gihe ikizamini cya EMC gisuzuma ubudahangarwa bwacyo bwo kwivanga hanze. Ibi bizamini birashobora gufasha kumenya ibibazo byose no kwemerera impinduka zikenewe kugirango bigerweho.

Muri make, kwemeza EMI / EMC kubahiriza imbaho ​​zumuzunguruko zikomeye bisaba gutekereza neza kubintu bitandukanye. Kuva muburyo bukwiye no guhitamo ibice kugeza ibimenyetso byerekana inzira no kugerageza, buri ntambwe igira uruhare runini mugushikira inama yujuje ubuziranenge. Mugukemura ibyo bitekerezo no gukurikiza imikorere myiza, abashushanya barashobora gukora imbaho ​​zikomeye kandi zizewe zikomeye zomuzunguruko zikora neza mubihe bidahwitse cyane mugihe zujuje ibisabwa EMI / EMC.