Cov kev sojntsuam ze ze ua lub luag haujlwm tseem ceeb hauv kev kuaj electromagnetic compatibility (EMC), teeb liab kev soj ntsuam kev ncaj ncees, thiab RF engineering. Lawv qhov kev ua tau zoo thiab qhov tseeb yog nyob ntawm ntau qhov tseem ceeb. Nov yog cov lus piav qhia ntxaws ntxaws ntawm qee qhov tseem ceeb tsis zoo thiab lawv qhov cuam tshuam:
1. Ntau zaus
Txhais: Qhov ntau zaus yog hais txog qhov ntau ntawm cov teeb liab zaus uas qhov kev sojntsuam nyob ze tuaj yeem kuaj pom tau zoo, feem ntau sawv cev rau qhov pib thiab nres zaus, xws li 10 kHz txog 3 GHz.
Paub meej: Qhov ntau zaus ntawm kev sojntsuam ze ze txiav txim siab nws lub peev xwm ua haujlwm hauv ib pawg tshwj xeeb. Yog hais tias qhov kev sojntsuam qhov ntau zaus tsis txaus, nws yuav plam qhov tseem ceeb ntawm high-frequency lossis low-frequency signals, uas ua rau kev ntsuas tsis tiav. Piv txwv li, hauv xov tooj cua zaus (RF) daim ntawv thov, qhov kev sojntsuam yuav tsum tau npog ib pawg ntawm tsawg kawg yog ob peb puas MHz mus rau ob peb GHz. Hauv kev ntsuas hluav taws xob qis qis, qhov kev sojntsuam yuav tsum tau kuaj xyuas cov teeb liab tsawg li ob peb Hz. Yog li ntawd, xaiv qhov tsim nyog ntau zaus yog qhov tseem ceeb rau kev siv sib txawv.
2. rhiab heev
Txhais: rhiab heev yog qhov kev sojntsuam lub peev xwm los teb rau cov teeb liab electromagnetic, feem ntau qhia hauv dBμV lossis dBm. Qhov siab tshaj plaws txhais tau hais tias qhov kev sojntsuam tuaj yeem pom cov cim tsis muaj zog electromagnetic.
Paub meej: Hauv kev ntsuam xyuas EMC lossis kev ntsuas kev ntseeg siab, qhov siab dua qhov siab, qhov tsis muaj zog ntawm cov teeb liab qhov kev sojntsuam tuaj yeem ntes tau, uas yog qhov tseem ceeb tshwj xeeb rau kev txheeb xyuas qhov chaw me me ntawm electromagnetic cuam tshuam lossis suab nrov. Txawm li cas los xij, cov kev sojntsuam siab heev kuj tseem muaj kev cuam tshuam rau ib puag ncig suab nrov, yog li yuav tsum tau ceev faj tswj cov suab nrov hauv ib puag ncig ntsuas. Piv txwv li, nyob rau hauv precision Circuit Court tsim, ib tug heev rhiab heev sojntsuam yuav pab tau engineers ntes me me parasitic signals, tso cai rau lub Circuit Court optimization thiab txhim kho.
3. Spatial daws teeb meem
Txhais: Kev daws teeb meem spatial hais txog qhov sib txawv ntawm lub cev me tshaj plaws uas qhov kev sojntsuam tuaj yeem paub qhov txawv ntawm qhov kev ntsuas ze, feem ntau ntsuas hauv millimeters lossis micrometers.
Paub meej: Spatial daws teeb meem txiav txim siab npaum li cas qhov kev sojntsuam tuaj yeem paub qhov txawv ntawm qhov chaw ntawm electromagnetic teb. High spatial daws teeb meem probes tuaj yeem txheeb xyuas qhov kev hloov me me ntawm cov electromagnetic teb nyob rau hauv complex circuits, uas yog tshwj xeeb tshaj yog ib qho tseem ceeb rau kev soj ntsuam cov cheeb tsam hauv cheeb tsam ntawm cov neeg coob coob. Piv txwv li, nyob rau hauv RF circuits, siab spatial daws teeb meem probes pab nrhiav cov me me to qhov chaw los yog cuam tshuam cov ntsiab lus, ua rau kom meej meej daws teeb meem thiab tsim kev txhim kho. Kev sojntsuam nrog qhov kev daws teeb meem tsis tshua muaj peev xwm tsuas yog muab daim ntawv qhia kev sib faib ua haujlwm sib luag, ua rau nws nyuaj kom ua tau raws li qhov yuav tsum tau ua.
4. Kev sojntsuam hom
Txhais: Cov kev sojntsuam ze ze tuaj nyob rau hauv ntau hom, categorized raws li hom electromagnetic teb lawv ntsuas, xws li hluav taws xob sojntsuam, magnetic field probes, thiab ua ke probes.
Paub meej:
Hluav taws xob Field Probes: Feem ntau siv rau kev ntsuas hluav taws xob (E-field). Lawv yog cov rhiab heev rau cov kev hloov voltage thiab yog haum rau high-impedance circuits los yog high-voltage ib puag ncig. Hluav taws xob soj ntsuam feem ntau yog tsim los ua me me dipole kav hlau txais xov lossis cov qauv zoo sib xws los ntes lub zog thiab kev taw qhia ntawm hluav taws xob teb.
Sib Nqus Field Probes: Tshwj xeeb tsim los ntes cov teb sib nqus (H-field) thiab muaj kev cuam tshuam rau cov kev hloov pauv tam sim no, ua rau lawv zoo tagnrho rau kev kuaj xyuas cov kev tsis tshua muaj impedance lossis thaj chaw uas muaj cov dej ntws tam sim no. Magnetic field probes feem ntau siv lub voj lossis cov qauv solenoid los ntes cov kev hloov pauv hauv magnetic teb.
Kev sojntsuam sib xyaw: Muab cov dej num ntawm ob qho tib si hluav taws xob thiab cov khoom sib nqus, tso cai rau kev ntsuas hluav taws xob thiab sib nqus sib nqus. Qhov no muaj txiaj ntsig zoo hauv kev sim EMC nyuaj lossis ib puag ncig nrog ntau qhov chaw cuam tshuam. Piv txwv li, thaum ntsuas qhov nyuaj PCB, kev sojntsuam sib xyaw ua ke tuaj yeem muab cov ntaub ntawv faib hluav taws xob thiab sib nqus, pab cov engineers nkag siab txog qhov chaw electromagnetic.
Hom kev sojntsuam no tsim nyog rau cov ntawv thov sib txawv, thiab xaiv hom kev sojntsuam zoo tuaj yeem txhim kho kev ntsuas kev ua tau zoo thiab raug.
