Kev tsom xam thiab kev taw qhia txog cov tswv yim siv rau EMI hauv kev hloov cov khoom siv fais fab
Kev faib tawm thiab cov qauv ntawm EMC:
EMC (electromagnetic Compatibility) yog electromagnetic sib haum, uas suav nrog EMI (electromagnetic ntxhov) thiab EMS (Electromagnetic tsis muaj zog). EMC txhais tau tias yog lub peev xwm ntawm lub cuab yeej lossis cov kab ke ua haujlwm tau zoo hauv nws cov khoom siv hluav taws xob tsis muaj peev xwm ua rau lub cuab yeej siv hluav taws xob uas tsis muaj cuab yeej siv los yog khoom nyob hauv qhov chaw ntawd. Lub sij hawm Ec yog hais txog electromagnetic sib haum. EMP hais txog hluav taws xob pulses.
EMC=ems emps EMS EMS EMS EMS EMS EMI: Electromagnet Incidority (Kev Tiv Thaiv Electromagnetic Sib (Tiv Thaiv)
EMI tuaj yeem muab faib ua ob ntu: Kev Cuag thiab Hluav Taws Xob,
FCC kev sim ua zaus yog nruab nrab ntawm 450k {1}} mHz, thiab cov kab ke cept yog nruab nrab ntawm 150}} mHz. Kev coj ua yuav raug sim siv tshuaj anectrum, thaum hluav taws xob yuav tsum raug kuaj hauv chav haujlwm tshwj xeeb.
EMI yog kev cuam tshuam hluav taws xob hluav taws xob, uas yog ib feem ntawm EMC. EMI (hluav taws xob kev cuam tshuam) yog hluav taws xob cuam tshuam, emi suav nrog kev tsav tsheb hauv hluav taws xob, hluav taws xob, hluav taws xob flicker, thiab lwm yam. Electromagnetic cuam tshuam yog muaj ntawm peb ntu: Qhov cuam tshuam ntawm cov channel, thiab tau hais txog peb cov khoom cuam tshuam. EMI yog linearly proportional rau tam sim no, thaj chaw ua haujlwm tam sim no, thiab cov xwm txheej ntawm cov zaus emi} Kuv * s * f2. Kuv yog qhov tam sim no, s yog lub voj thaj, f yog zaus, thiab k yog tas mus li nrog cov khoom siv hluav taws xob thiab lwm yam.
Kev cuam tshuam hluav taws xob cuam tshuam (30MHz {1}} ghz) propagates los ntawm cov yam ntxwv thiab cov kev cai ntawm electromagnetic vuag. Tab sis tsis yog txhua cov khoom siv tau emit electromagnetic vuag.
Kev cuam tshuam (150k {1}} mHz) yog kev cuam tshuam uas propagates raws tus neeg saib xyuas. Yog li kev tshaj tawm ntawm kev ua kev cuam tshuam ntawm kev cuam tshuam tau tas yuav tsum tau ua tiav Circuit Court sib txuas ntawm cov kev cuam tshuam thiab tus txais.
EMI yog hais txog sab nraud sab nraud hluav taws xob hauv hluav taws xob ntawm cov khoom lag luam. Feem ntau, nws tau muab faib ua ob theem: Chav Kawm A thiab Chav Kawm Qeb B. A yog qib kawm, thiab qib B yog pej xeem qib. Kev siv neeg pej xeem yog stricter dua li siv vim tias siv siv rau qib hluav taws kub me ntsis ntawm hluav taws xob. Nyob rau hauv cov nqe lus ntawm emi hluavtaws kuaj rau tib cov khoom, ntawm 30-230 mHz, ntsuas ib qho kev txwv tsis pub dhau ntawm 50dbm (ntsuas hauv ib qho kev ua piv txwv), uas yog ntau so. Feem ntau hais lus, Classa hais txog kev muaj peev xwm ntawm cov khoom siv los ua haujlwm txuas ntxiv raws li qhov xav tau raws li cov neeg teb xov xwm kev cuam tshuam lossis tsis ua haujlwm ntawm qib kev ua tau zoo.
