Qaadashada Gariiradda
Nidaamka MRI, gariiradda helaya waa qayb muhiim ah, taas oo si toos ah u saameeya tayada sawirka. Qaadashada gariiradaha ayaa mas'uul ka ah ogaanshaha calaamadda MR. Wareegga magnetka saafiga ah ee ruxruxaya ee ka imanaya nidaamka lafdhabarta xiisaha leh ayaa lagu qabsan karaa gariiradda kaas oo uu ka soo baxay koronto la kiciyay. Hadda kan hadda jira ayaa la xoojiyey, la digiteeyey, oo la sifeeyey si loo soo saaro inta jeer iyo macluumaadka wejiga.
Ka dib sanado badan oo cilmi baaris aan kala go 'lahayn iyo shaqo adag, kooxdayada R&D ee shirkadeena waxay soo saartay gariirkeeda qaadashada iyada oo loo marayo imtixaano iyo isbarbardhigyo soo noqnoqda oo kala duwan, iyo tilmaamayaasha waxqabadkeedu waxay gaadheen heerka hogaaminta warshadaha.
Waxaan haynaa noocyo badan oo gariiro ah oo aan kala dooran karno, kuwaas oo loo kala saari karo si waafaqsan muuqaalka, kuwaas oo loo qaybin karo dusha sare, qafis shimbiraha, iyo gariiradaha transceiver. Intaa waxaa dheer, isticmaaluhu wuxuu dooran karaa tirada kanaalada gariiradda marka loo baahdo,
Guud ahaan, gariiradaha shimbiraha ayaa ah kuwa ugu isticmaalka badan, waxaana loo isticmaali karaa madaxa, qoorta, jilbaha, iwm; tusaale ahaan, gariiradda qafiska shimbiraha ee labada kanaal waxa ay ka kooban tahay gariiradda solenoid iyo gariiradda kooraha. Gariiradayadu waxay leeyihiin waxyaabo tayo sare leh iyo isku midnimo wanaagsan, Waxay dabooli karaan baahiyo sawireed oo kala duwan, isla mar ahaantaana, waxaanu sidoo kale bixinaa adeegyo gaar ah, isticmaalayaashu waxay dooran karaan cabbirka laftooda.
Gariiradda dusha sare waxaa loo isticmaali karaa in lagu sawiro laf dhabarta ama qaybaha kale ee xiisaha; marka la isticmaalayo gariiradda dusha sare, ay sabab u tahay furfurnaantiisa, waxaad sawiri kartaa aagga xiisaha ee qaababka kala duwan.
Gariiradda transceiver waa nooc cusub oo gariiradda ah. Gudbintiisa iyo helitaankeedu waa isku dhafan yihiin, markaa cabbirka gariiradda ayaa ka yar gariiradda caadiga ah. Isla shuruudo la mid ah, marka la barbar dhigo nidaamka kala go'an ee transceiver dhaqameed, waxay leedahay shuruudo yar oo ku saabsan awooda cod-weyneeye RF. Intaa waxaa dheer, iyada oo ay ugu wacan tahay cabbirkeeda yar, uma baahna xajmiga furitaanka magnetka weyn, waxaana loo isticmaali karaa nidaam yar ama nidaamyo kale oo leh shuruudo adag oo meel bannaan.
1, Nooca: gariiradda dusha, gariiradda mugga, gariiradda isku dhafan gudbiyaha-qaade
2, Frequency: customized sida ay macaamiisha
3, Channels: hal channel, dual channel, afar channel, 8 channel, 16 channel, iwm.
4, impedance Input: 50 ohms
5,Go'doomin: ka fiican 20dB
6, Faa'iidada horudhaca ah: 30dB
7, sawirka sawaxanka: 0.5-0.7
8, bandwidth shaqaynaysa: 1MHz,