Igishushanyo kibi cya EMC gishobora kwangiza imikorere yacyo: Ibisobanuro by'ingenzi ku bahanga ba SMT PCB

Guhuza amashanyarazi n'amashanyarazi (EMC) ni ingenzi cyane mu gushushanya no guteranya PCB, cyane cyane mu guteranya SMT (Surface-Mount Technology). Uko ibikoresho bigenda birushaho kuba bito kandi byihuse, kubungabunga ibipimo by'imikorere myiza mu gihe hirindwa ihungabana ry'amashanyarazi n'amashanyarazi (EMI) ni ingenzi cyane kugira ngo imikorere ibe myiza. Iyi nkuru irasuzuma ingingo z'ingenzi zo gushushanya EMC mu guteranya SMT PCB, yibanda ku ngamba z'ingenzi zifasha kugabanya EMI no kwemeza ko PCB ari inyangamugayo.

Guhuza Electromagnetic (EMC) ni iki?

Guhuza amashanyarazi bivuga ubushobozi bwa PCB bwo gukora uko byagenwe nta gusohora cyangwa ngo igire ikibazo cyo kubangamira amashanyarazi (EMI) bishobora guhungabanya imikorere yayo cyangwa imikorere y'ibikoresho biri hafi aho. Kugera ku kubahiriza EMC ni ingenzi, cyane cyane mu nganda nk'itumanaho, iby'indege, iby'imodoka, n'ibikorwa by'ubuvuzi, aho ubuziranenge bw'ibimenyetso n'ubwizigirwa bwa sisitemu ari ingenzi cyane.

Ingingo z'ingenzi zo gushushanya EMC mu guteranya SMT PCB

Gusobanukirwa amasoko ya EMI

Intambwe ya mbere mu gushushanya EMC ni ukumenya amasoko ashobora guturuka kuri EMI. Ayo masoko ashobora kuba:

• Ibice bihinduranya byihuse cyane nka microcontrollers cyangwa FPGAs.
• Imiyoboro y'amashanyarazi.
• Antena cyangwa ibindi bikoresho byo kohereza amakuru bidafite insinga.
• Imiterere y'ingufu za elegitoronike ikoresha imbaraga za elegitoronike.

Gusobanukirwa aya masoko bifasha mu gushyiraho ingamba zo kugabanya cyangwa kurinda EMI kugira ingaruka ku PCB cyangwa ibidukikije byayo.

Imiyoboro yo Gutera Ingufu n'Ikwirakwizwa ry'Ingufu

Gushyiraho ubutaka neza ni bumwe mu buryo bwiza bwo gukumira EMI mu guteranya SMT PCB. Urwego rwo hasi rwakozwe neza rutanga inzira yoroshye yo kugarura ibimenyetso ku isoko, bikarinda urusaku gukwirakwira hirya no hino. Byongeye kandi, PDN zakozwe neza zigabanya urusaku rw'amashanyarazi, ibyo bikaba byatera kudahuzagurika kwa sisitemu.

• Ikibuga cy'ubutaka gikomeye: Urugendo rwo hasi rudahinduka rugabanya inzira y'imigezi igaruka kandi rugakingira urujya n'uruza rw'amashanyarazi rwo hanze.
• Gutandukanya indege y'amashanyarazi: Gutandukanya indege z'amashanyarazi bishobora kugabanya imikoranire hagati y'ibice by'urusaku n'iby'ubuhanga bya PCB.

Uburyo bwo Gukurikirana no Gutunganya Imiterere

Imiterere y'amakuru ni ingenzi mu kwemeza ko ibimenyetso ari inyangamugayo no kugabanya EMI. Uburyo bukurikira bwo gushyiraho amakuru bushobora gukoreshwa mu kugabanya EMI:

• Uburyo bugufi, bwo gukurikirana inzira igororotse: Gabanya uburebure bw'ibimenyetso bikoresha amajwi menshi kugira ngo ugabanye imirasire n'ibiganiro binyuranyije.
• Impedance igenzurwa: Ku bimenyetso byihuse cyane, menya neza ko ibimenyetso bigumana impedance ihoraho kugira ngo hirindwe ko urumuri rugaruka kandi bigabanye EMI.
• Ibyiciro Bitandukanye: Koresha differential pairs ku bimenyetso byihuse cyane kugira ngo ugabanye urusaku kandi wongere ubuziranenge bw'ibimenyetso.

Gukoresha Uburinzi n'Ibikoresho

Gukingira ni bumwe mu buryo bwiza bwo kugabanya EMI mu miyoboro y’amashanyarazi. Gukingira bishobora gukoreshwa ku rwego rw’ibice cyangwa ku rwego rwa PCB. Bikubiyemo gushyira ibikoresho biyobora amashanyarazi hirya no hino ku bice by’amashanyarazi cyangwa ibice by’amashanyarazi kugira ngo bizibire cyangwa bikingire imirasire y’amashanyarazi idakenewe.

• Inkingo z'umuringa: Umuringa cyangwa ibindi bikoresho biyobora amashanyarazi bishobora gushyirwa hafi y'ibice cyangwa PCB yose kugira ngo binjize EMI.
• Gasket za EMI: Gufunga imiyoboro y'amashanyarazi hakoreshejwe gasket ziyobora amashanyarazi nabyo birinda gusohoka kwa EMI no kubangamira ibikorwa byo hanze.

Ibikoresho byo gukuraho imiyoboro

Gukuraho capacitors bigira uruhare runini mu gutuza amashanyarazi no kugabanya urusaku ku murongo wo hejuru. Gushyira capacitors hafi y'aho amashanyarazi anyura bifasha mu gushungura urusaku no kwemeza ko amashanyarazi agezwa neza ku bice by'umubiri bishobora kwangirika.

• Gushyira Capacitor mu mwanya wayo: Shyira capacitors zo gukuraho imirasire hafi y'imbaraga n'imigozi yo hasi ya buri gice uko bishoboka kose kugira ngo ugabanye urusaku rw'umuvuduko mwinshi.

Imashini zitandukanya n'izisanzwe

EMI ishobora gukwirakwira binyuze mu miyoboro y'amashanyarazi n'amatangazo. Kugira ngo ubuze EMI kwinjira cyangwa gusohoka muri PCB, koresha filters zitandukanya n'izisanzwe. Izi filters zemeza ko electromagnetic signals zidakenewe zihagarikwa nta ngaruka ku mikorere y'uruziga.

• Kunyunyuza mu buryo busanzwe: Ibi bigira akamaro mu gushungura urusaku rw’uburyo busanzwe no kurinda EMI ku nsinga z’amashanyarazi.
• Amasaro ya Ferrite: Amasaro ya Ferrite akunze gukoreshwa mu gukumira urusaku rwinshi ku nsinga z'amajwi n'amashanyarazi.

Guhitamo ibikoresho bya PCBPCB

Guhitamo ibikoresho bya PCB bigira uruhare runini mu mikorere ya EMC. Ibikoresho bya PCB bifite frequency nyinshi bifite amashanyarazi make hamwe na tangents nke zitakaza ni byiza ku bikorwa bisaba ibimenyetso byihuse.

• Ibice bito bitakaza igihombo gito: Koresha ibikoresho nka Rogers cyangwa izindi laminates zigabanya igihombo kinini mu gukoresha inshuro nyinshi kugira ngo ugabanye kwangirika kw'ibimenyetso na EMI.

Gupima no kubahiriza amahame ngenderwaho

Iyo PCB yawe imaze gutegurwa, isuzuma ni ngombwa kugira ngo irebe ko yujuje ibisabwa bya EMC kandi ko itabangamira ibindi bikoresho. Amabwiriza nka IEC 61000 series n'amabwiriza ya FCC Igice cya 15 ku bikoresho by'ikoranabuhanga ni ibipimo bikunze gukoreshwa mu kubahiriza EMC.

• Isuzuma rya EMC: Gukora ibizamini by’ubudahangarwa bw’imyotsi ihumanya ikirere n’iby’ubudahangarwa bw’umubiri kugira ngo urebe neza ko PCB ikora mu buryo bwemewe.
• Kwemeza binyuze mu kwigana: Koresha ibikoresho byo kwigana kugira ngo usuzume imikorere ya electromagnetic ya PCB no gukora impinduka mbere yo gupima physical.

Gushushanya PCB ikurikiza EMC mu guteranya SMT PCB ni ingenzi kugira ngo ibikoresho by'ikoranabuhanga bigezweho bibe byizerwa kandi bikore neza. Mu gusuzuma neza imikoreshereze y'ubutaka, gukwirakwiza ingufu, inzira yo gushakisha aho ibintu biherereye, uburyo bwo kuzirinda, no guhitamo ibikoresho, abahanga mu by'ikoranabuhanga bashobora kugabanya cyane ibyago byo kwangirika kw'amashanyarazi no kunoza imikorere rusange y'ibicuruzwa byabo. Waba ukorana na PCB za RF zihuta cyanecyangwa imiterere y’imashini ikoresha inshuro nke, gushyiramo ibi bintu by’ingenzi mu mikorere yawe y’imashini bizatuma ugira sisitemu zikomeye kandi zizewe.

Mu kwibanda kuri izi ngamba z'ingenzi zo gushushanya ikoranabuhanga rijyanye n'imikorere y'amashanyarazi, ushobora kwirinda ibibazo by'imikorere, kugabanya ikiguzi cyo gukora, no kwemeza ko ibicuruzwa byawe byubahiriza amabwiriza akenewe. Waba urimo gukora PCB zifite frequency yo hejuru cyangwa frequency yo hasi, igishushanyo cya EMC kigomba guhora ari cyo kintu cy'ingenzi kugira ngo cyongere imikorere y'ibikoresho n'ubunararibonye bw'ababikoresha.