Mokhoa oa ho tšoaea PCB ka katleho e nang le tšireletso ea EMI/EMC

Lefatšeng le lulang le fetoha la lisebelisoa tsa elektroniki, ts'ireletso ea PCB (Printed Circuit Board) e nang le EMI/EMC (Electromagnetic Interference/Electromagnetic Compatibility) e ntse e ba bohlokoa le ho feta. Lithebe tsena li etselitsoe ho fokotsa mahlaseli a motlakase le lerata le hlahisoang ke lisebelisoa tsa elektroniki, ho netefatsa ts'ebetso ea tsona e nepahetseng le ho latela litekanyetso tsa taolo.

Leha ho le joalo, baenjiniere ba bangata le batho ba ratang ho itlosa bolutu ba sokola ho fihlela ts'ireletso e sebetsang ea EMI/EMC nakong ea prototyping ea PCB.Ka poso ena ea blog, re tla tšohla mehato e amehang ho atleheng ho prototyping PCB e nang le tšireletso ea EMI/EMC, ho u fa tsebo e hlokahalang ho hlola mathata afe kapa afe ao u ka kopanang le ona.

1. Utloisisa tšireletso ea EMI/EMC

Taba ea pele, ho bohlokoa ho utloisisa menahano ea mantlha ea ho sireletsa EMI/EMC. EMI e bolela matla a sa batleheng a motlakase a ka sitisang ts'ebetso e tloaelehileng ea lisebelisoa tsa elektroniki, athe EMC e bua ka bokhoni ba sesebelisoa ba ho sebetsa ka har'a tikoloho ea motlakase ntle le ho baka tšitiso ea letho.

Ho sireletsa EMI/EMC ho kenyelletsa maano le lisebelisoa tse thusang ho thibela matla a makenete a motlakase ho tsamaea le ho baka tšitiso. Ho sireletsa ho ka finyelloa ka ho sebelisa lisebelisoa tsa conductive, tse kang tšepe ea tšepe kapa pente e tsamaisang, e etsang mokoallo ho pota-pota kopano ea PCB.

2. Khetha thepa e nepahetseng ea tšireletso

Ho bohlokoa ho khetha thepa e sireletsang hantle bakeng sa tšireletso e sebetsang ea EMI/EMC. Lisebelisoa tse tloaelehileng tse sebelisoang ho sireletsa li kenyelletsa koporo, aluminium le tšepe. Koporo e tumme ka ho khetheha ka lebaka la conductivity ea eona e ntle ea motlakase. Leha ho le joalo, lintlha tse ling li lokela ho nkoa ha ho khethoa thepa ea tšireletso, e kang litšenyehelo, boima ba 'mele le boiketlo ba ho etsa thepa.

3. Rera sebopeho sa PCB

Nakong ea mokhahlelo oa prototyping oa PCB, ho beoa ha karolo le tlhophiso li tlameha ho nahanoa ka hloko. Moralo o nepahetseng oa sebopeho sa PCB o ka fokotsa mathata a EMI/EMC haholo. Ho arola likarolo tsa maqhubu a phahameng hammoho le ho li arola ho likarolo tse bonolo ho thusa ho thibela ho kopana ha motlakase.

4. Kenya ts'ebetsong mekhoa ea ho theola mobu

Mekhoa ea ho beha fatše e bapala karolo ea bohlokoa ho fokotsa litaba tsa EMI/EMC. Sebaka se nepahetseng se tiisa hore likarolo tsohle tse ka hare ho PCB li hokahane le sebaka se tloaelehileng sa litšupiso, kahoo ho fokotsa kotsi ea ho loops fatše le ho kena-kenana le lerata. Sefofane sa fatše se tiileng se tlameha ho etsoa ho PCB le likarolo tsohle tsa bohlokoa tse amanang le eona.

5. Sebelisa theknoloji ea ho sireletsa

Ntle le ho khetha lisebelisoa tse nepahetseng, ho sebelisa mekhoa ea ho sireletsa ho bohlokoa ho fokotsa litaba tsa EMI/EMC. Mekhoa ena e kenyelletsa ho sebelisa tšireletso lipakeng tsa lipotoloho tse hlokolosi, ho beha likarolo ka har'a meketjana e theiloeng fatše, le ho sebelisa makotikoti a sirelelitsoeng kapa likhurumetso ho arola likarolo tse bobebe tsa 'mele.

6. Ntlafatsa botšepehi ba pontšo

Ho boloka botšepehi ba lets'oao ho bohlokoa ho thibela tšitiso ea motlakase. Ho kenya ts'ebetsong mekhoa e nepahetseng ea ho tsamaisa mats'oao, joalo ka ho bonts'a karohano le mokhoa o laoloang oa impedance, ho ka thusa ho fokotsa ho fokotseha ha lets'oao ka lebaka la tšusumetso ea kantle ea motlakase.

7. Teko le ho pheta-pheta

Kamora hore prototype ea PCB e kopane, ts'ebetso ea eona ea EMI/EMC e tlameha ho lekoa. Mekhoa e fapaneng, joalo ka tlhahlobo ea tlhahiso le tlhahlobo ea ts'oaetso, e ka thusa ho lekola katleho ea theknoloji ea tšireletso e sebelisoang. Ho ipapisitsoe le liphetho tsa liteko, ho ka etsoa liphetoho tse hlokahalang ho ntlafatsa ts'ebetso ea ts'ireletso.

8. Sebelisa lisebelisoa tsa EDA

Ho sebelisa lisebelisoa tsa elektroniki tsa ho iketsetsa (EDA) ho ka nolofatsa haholo ts'ebetso ea prototyping ea PCB le ho thusa ho sireletsa EMI/EMC. Lisebelisoa tsa EDA li fana ka bokhoni bo kang boemeli ba tšimo ea motlakase, tlhahlobo ea botšepehi ba matšoao, le ntlafatso ea sebopeho sa likarolo, ho lumella baenjiniere ho tseba mathata a ka bang teng le ho ntlafatsa meralo ea bona pele ba e etsa.

Ka kakaretso

Ho rala prototypes ea PCB e nang le ts'ireletso e sebetsang ea EMI/EMC ho bohlokoa ho netefatsa ts'ebetso e nepahetseng le ho latela litekanyetso tsa taolo.Ka ho utloisisa mehopolo ea mantlha ea ho sireletsa EMI/EMC, ho khetha lisebelisoa tse nepahetseng, ho kenya tšebetsong mekhoa e nepahetseng, le ho sebelisa lisebelisoa tsa EDA, baenjiniere le batho ba ratang ho itlosa bolutu ba ka hlola mathata a mohato ona oa bohlokoa oa nts'etsopele ea PCB. Kahoo amohela mekhoa ena 'me u qale leeto la hau la ho etsa mohlala oa PCB ka kholiseho!