Hoobkas kaw tshwm sim los ntawm kev cuam tshuam hluav taws xob hluav taws xob: yuav ua li cas EMC kev sim tuaj yeem zam tau ntau lab ntawm kev poob?

Hoobkas kaw tshwm sim los ntawm kev cuam tshuam hluav taws xob hluav taws xob: yuav ua li cas EMC kev sim tuaj yeem zam tau ntau lab ntawm kev poob?

Taw qhia: Qhov tsis pom kev puas tsuaj lab

Hauv 2024, ib qho kev tsim kho tau zoo ntawm cov kab kev sib hloov, lub hauv paus ua rau muaj cov kab ke ntawm cov kab hluav taws xob, cov kab ke tshiab tom qab kev tswj hwm los ntawm lub zog Kab thiab ua rau cov teeb liab tsis meej . Qhov xwm txheej no ncaj qha rau kev ua kom qeeb dua li 3 lab, thiab kuj ua rau muaj kev cia siab thiab ua rau lub suab npe nrov {}}

Qhov no tsis yog ib qho kev sib cais . Raws li cov kws tshaj lij nyob hauv lub Emc Killer ", thiab EMC kev kuaj yog thawj kab ntawm kev tiv thaiv rau cov lag luam kom muaj kev pheej hmoo.

1. Qhov xwm ntawm EMC teeb meem: Kev sib ntaus sib tua pom

1) Cov ntsiab lus ntsiab lus ntawm Electromagnetic Compatibility (EMC)

EMC suav nrog ob lub peev xwm tseem ceeb:

• Kev cuam tshuam hluav taws xob hauv hluav taws xob (EMI): Kev cuam tshuam hluav taws xob muaj kev cuam tshuam los ntawm lub ntaus ntawv nws tus kheej tsis cuam tshuam lwm cov khoom siv;
• Electromagnetic Txhaj Tshuaj Tiv Thaiv (EMS): Cov khoom siv tseem tuaj yeem ua haujlwm stably nyob rau hauv cov txheej txheem hluav taws xob ua ke hluav taws xob ib puag ncig {}}

Hauv ntej, EMC yuav tsum muaj cov khoom siv yog "tsis yog qhov cuam tshuam tsis yog tus neeg raug tsim txom ."

2) Cov kev cuam tshuam uas muaj kev cuam tshuam nrog cov xwm txheej kev lag luam

• Kev cuam tshuam los ntawm: Kev sib kis tau los ntawm cov hluav taws xob cable thiab cov paib (xws li zaus hloov kho, hloov fais fab khoom);
• Kev cuam tshuam hluav taws xob: diffusion nyob rau hauv daim ntawv ntawm electromagnetic nthwv dej (xws li cov khoom siv vuam zoo nkauj, kev sib txuas lus wireless);
• Coupling txoj kev: Capacitive / inductive txuas ntawm cov khoom siv, av voj, thiab lwm yam {}}

Noj cov ntaub ntawv nyob hauv tsab xov xwm ua piv txwv, cov lus sib txuas lus tau ua rau lub tshuab hloov pauv hlau tau ua los ntawm cov hlau hluav taws xob tau ua kom muaj kev cuam tshuam nrog cuam tshuam rau cov cuam tshuam nrog cuam tshuam rau kev cuam tshuam {}}}

2. EMC kuaj: Los ntawm "passive tua hluav taws" rau "kev tiv thaiv nquag"

1) Vim li cas EMC sim tsim nyog?

• Cov Kev Cai Tswj Haujlwm: EU CC, Tuam Tshoj CCC thiab lwm yam ntawv pov thawj txhua yam siv EMC raws li cov ntawv nkag mus;
• Kev Txiav Txim Siab: Cov nqi ntawm kev sim thaum ntxov tsuas yog 1/10 ntawm tus nqi tom qab rectification;
• Kev Tsim Nyog: 90% ntawm EMC Teeb meem hauv cov tshuab hluav taws xob ua hauv cov tshuab hluav taws xob ua tau los ntawm cov txheej txheem kev ntsuas

2) Kev kuaj mob thiab cov qauv

3) Qhov chaw kuaj xyuas ib puag ncig

• Anchoic Chamber: siv rau kev ntsuas hluav taws xob / kev tiv thaiv kev tiv thaiv, lub suab tom qab yuav tsum tsawg dua li qhov txwv ntawm 6dB;
• Kev Tiv Thaiv Chav: rho tawm ntawm kev cuam tshuam sab nraud kom ntseeg tau tias yog qhov tseeb ntawm kev ua tiav

{3. Cov tswv yim tsom xam: EMC daws teeb meem thiab Rectification txoj kev npaj

Kev Tshawb Xyuas Cov Ntaub Ntawv: Cov daws rau qhov kev cuam tshuam hloov siab ntau zaus

Kauj ruam 1: Kev cuam tshuam hauv qhov chaw hauv zos

Siv cov kws tshuaj ntsuam spectrum mus ntes cov suab nrov broadband txij li 2mHz txog 10mHz ntawm cov nqi fais fab, nrog lub ncov siab tshaj 15db.

Kauj ruam 2: Coupling Txoj Kev Tshawb Xyuas

Nws tau pom tias lub cnc system thiab cov kev hloov pauv ntau zaus qhia tib cov xaim hauv av, tsim cov impedance conpedance conperming {}}

Kauj Ruam 3: Kev Ntsuas Rectification

Lim:Nruab ib qho kev sib tw hom choke thiab X2 / Y2 Capacitor ntawm cov lus qhia xaus ntawm zaus inverter;

Muab cais nyob ib leeg:Kev siv daim thaiv npog sib dhos khub cable thiab ib qho taw tes hauv av;

Shielding:Nruab cov ntaub qhwv cov ntaub qhwv rau ntawm cov taub hau rhiab sab hauv cov txee txee .

Tom qab Recification, tus kis kev puas tsuaj tau txo los ntawm 20db, thiab cov kab ntau lawm rov ua haujlwm ruaj khov.

Lub peev xwm kev daws teeb meem rau kev cuam tshuam zoo tshaj plaws

• PCB tsim: fawm txheej hlau rau teeb liab kab thiab kab hluav taws xob kom txo cov crosstalk;
• Lim capacitor: parallel mlcc capacmotion of 10 100nf ~ 100nf ntawm i / o ports mus rau suppress high suab nrov;
• Ferrite tub ntxhais: txuas nrog cable xaus kom ua kom muaj kev cuam tshuam loj (haum rau sab saud 30mHz)

{{0 {}} Cov lus qhia tseem ceeb rau cov lag luam

• "Kev sim ua haujlwm sab laug" Txheej Txheem Txheej Txheem: Qhia cov EMC electromagicility cov khoom siv rau kev sim ua ntej thaum lub sij hawm kev hloov kho tom qab ntau lawm;
• Xaiv cov tuam txhab uas muaj tswv yim: Xav paub txog lub chaw soj ntsuam cov chaw ua hauj lwm nrog CNAS kev tsim nyog los xyuas kom tau txais kev sib raug zoo ntawm kev sib tw ntawm kev ntsuas cov txiaj ntsig;
• Tsim cov Txuj Ci EMC: Txheej Txheem Kev Kawm tsis tu ncua los txhim kho cov tshuab tsim khoom lag luam xws li kev tsim kho hauv av xws li cov qauv hauv av tsim kev txhim kho

EMC tsis yog tsuas yog muaj kev sib tw kom zoo dua, tab sis kuj tseem muaj kab hauv qab rau ciaj sia rau {}}

Saib rov qab rau ntawm lub Hoobkas kaw qhov pib thaum pib, yog tias lub tuam txhab yuav tsum tau ua kom tiav ntawm cov khoom siv hluav taws xob ib puag ncig, nws tuaj yeem ua kom tiav cov khoom siv hluav taws xob ua ntej, nws tuaj yeem ua kom tiav cov khoom siv hluav taws xob ua ntej, nws tuaj yeem ua kom tiav cov khoom siv hluav taws xob ua ntej, nws yuav zam tau rau ntau lab

Kev nqis peev hauvEMC kuajtab tom nqis peev nyob rau yav tom ntej ntawm koj txoj kev lag luam!

Puas yog koj lub Hoobkas tau ntsib tej qhov teeb meem hluav taws xob hluav taws xob? Txais tos kom tawm ntawm cov lus los qhia koj cov ntaub ntawv . peb yuav xaiv 3 tus nyeem kom muab cov kev sab laj pub dawb {}}