Umshini we-CT ukuhluleka ukucabanga

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Umshini we-CT ukuhluleka ukucabanga

 

Umshini we-CT ochwepheshe wezokwelapha usetshenziswe kabanzi cishe kuzo zonke izibhedlela ezingaphezu kwezinga lesifunda kanye nokulungiswa kwezixhobo zokwelapha ezinjalo. Ngakho-ke, umsebenzi wezokwelapha uvame ukuhlangana nomshini. Manje sibheke kafushane isakhiwo esiyisisekelo somshini we-CT nomthombo oyinhloko wokuhluleka.
 
 
Isakhiwo esiyisisekelo somshini we-CT
 
Emva kweminyaka yentuthuko, isakhiwo somshini we-CT sithuthukisiwe kakhulu, ukwandisa izingqimba zomtshina, ijubane lokuskena liyashesha. Izinhlobo ziningi kakhulu. Kodwa ukwakheka kwayo kuyi-hardware efanayo, kunezingxenye ezintathu eziyinhloko:
 
I-1, inxenye futhi ine-X-ray detector gantry.
 
I-2 iyi-console ngekhompyutha
 
3, ukuphakamisa umbhede wesiguli.
 
Ukwakhiwa nokusebenza kusukela endaweni yokubuka kungahlukaniswa: ukulawula ukuskena kwikhompyutha nokuvuselelwa kwesithombe kwengxenye yenkampani eyenziwe ngesiguli - ukuma kweskrini nokulala phansi. Yenza i-generator ye-X-ray ne-X-ray ithrekhi ephakeme kakhulu futhi ususe ulwazi kanye nengxenye yokuthola idatha. Ngokusho kwalezi zici eziyisisekelo zokwakhiwa kwe-CT kwehluleka ukucacisa ukuthi isisombululo esiyisisekelo sincike futhi kunesisekelo.
 
 
 
Imishini emibili ye-CT yokuphulwa komshini, imithombo kanye nezici
 
I-CT ibangela ukuthi ukwehluleka kungahlukaniswa zibe izinhlobo ezintathu: Okokuqala, ngenxa yezimo zemvelo kubangele ukwehluleka akuvamile. Owesibini ubangelwa ukusebenza okungalungile kwephutha. Okwesibili, i-CT ingxenye yokuguga ngokwayo, ushintsho olufanele. Ukuhamba kwe-parameter okuholela ekugqokeni komshini noma ukwehluleka.
 
 
 
Ukuhluleka kwe-1 yezimo zemvelo
 
Njengoba izinga lokushisa kwekamelo le-CT, umswakama, izinga lokuhlanza umoya, ukuzinza kwe-CT ukutholakala kwamandla okubangelwa ukuguquka kwezimo zemvelo esizibiza ngokuthi ukwehluleka. Isibonelo: umoya ophansi, ukushisa kwamakamelo okuphakeme kuzokuholela kumishini ethile (njengokunikezwa kwamandla noma i-transformer) ngokushisa noma ukushisa, ukulimala kwebhodi lesifunda. Ukuphazamiseka komshini wokuvikelwa komshini, izimboni kanye nezifunda ezihambisanayo zenza ukushisa okushisa ngokweqile kanye nezinye izinto ezibonakalayo; I-CT supply voltage surges ingabangela ikhompiyutha ukuthi ingasebenzi kahle, umshini usebenza kahle, ngisho nokucindezela akuyona into evamile, ukungaqiniseki kwe-X, ekugcineni kuholele kumgangatho wesithombe, njll; ukuhlanzwa kwe-air akuyona ukucola okuhle okuholela kalula kukhompyutha kanzima impilo encane. Ukulawulwa kwe-signal yokudlulisa isignali eziningana ngenxa yokuthungatha uthuli wokuhola; uma umswakama ukhulu kakhulu, kuzoholela ekuhlulekeni kwephutha lamadivaysi e-short-circuit fault. Izimo zemvelo ngokuqondile noma ngokungaqondile ezibangelwa yi-CT zilimaza kakhulu, futhi zibangele ukulimala okungapheli. Ngakho-ke, imvelo yokusebenza ngangokunokwenzeka, i-CT iphutha kancane, impilo ende yesikhathi eside.
 
 
 
Iphutha le-2 lomuntu elibangelwa ukusebenza okungalungile
 
Izizathu ezivamile zokuphutha komuntu yilezi: ukungabi nesikhathi noma ukulungiswa kwesimiso sokufudumala, okuholela ekufaneni kwesithombe akuvamile noma okuhle, okuholela ku-CT ukuze amaphutha okubeka isiguli angavunyelwe ukususa isithombe; iziguli zigqoka izinto ezenziwe ngezithombe zensimbi ezibangelwa umkhiqizo; ngesikhathi esifanayo kuholela ezinhlobonhlobo ze-CT crash; khetha amamethrikhi wokuskena okwandisiwe ama-artifacts wesithombe ngenxa yokungalungile nokunye okunye. I-CT ivame ukuphutha komuntu ngeke kuholele emiphumeleni eyingozi, uma nje ukubona izizathu zendlela efanele yokuvuselela kabusha noma ukuvala ukuvala kabusha, ngokuvamile kuzokwazi ukuxazulula ngempumelelo inkinga.
 
 
 
3 · I-CT hardware ilimaza ukwehluleka kwayo kokukhiqiza okuyinhloko
 
Ukungenisa kwe-CT evuthiwe kakhulu kuhambisana nemithetho yezibalo ezibonakalayo zokuhluleka ngokweqile kwesikhashana kwakuyizindinganiso ezimise okwesikhumba, okufaka izinga eliphezulu lokuhluleka phakathi nezinyanga eziyisithupha zokuqala, izinyanga eziyisithupha emva kwesikhathi eside (5- Iminyaka eyi-8) ngesikhathi sezinyanga eziphansi eziyisikhombisa noma eziyisishiyagalombili, bese kuqala ukukhula kancane kancane.
 
ukwehluleka kwezingxenye zomshini
 
Lokhu okulandelayo ngokuyinhloko kwavela amaphutha amathathu amakhulu;
 
Ngokuphila okwandisiwe kwemishini, ukwehluleka kwemishini kodwa futhi nokwanda ngonyaka. I-CT yokuqala isetshenziselwa ukushintsha imodi yokujikeleza eguquguqukayo ngesikhathi sokujikeleza ukuskena ukufeza ijubane elifushane kakhulu lokujikeleza - ifenifolthi - ukuphuza ukuyeka, nokuphindaphindiwe njalo, kwaholela ezingeni eliphakeme lokuhluleka komshini. Isibonelo, isivinini sivame ukubonakala singaqiniseki, kulula ukudala ukungena ekulawuleni, ukuwaphula, ukushaya, ukubopha okunamandla kakhulu. Futhi ukugqoka ikhebula, ukuphuka nokunye ukwehluleka. Namuhla iningi le-CT lisebenzisa isitifiketi se-slip ring, ukujikeleza okufanayo kwendlela efanayo, futhi omunye umshini wokugcina ophezulu uphinde usebenzise ubuchwepheshe be-magnetic drive, okwehlisa kakhulu ukuwohloka kwemishini ejikelezayo. Kodwa-ke, ngenxa yokusetshenziswa kwezindandatho ze-slip, kubuye kube nephutha elithile, ngoba isimboli esinezingxabano ezijikelezayo sizoholela ekuthinteni okungekho isikhathi eside, futhi kubangele uchungechunge lokuhluleka okwenziwa ngamashini nokugesi, okufana nokuphuma kokulawula, okuphezulu ukucindezela, ukushisa (indandatho ephakeme ye-slip), Ukunye ukuphazamiseka kwesignali (slip ring transmission). Ngakho-ke qiniseka ukuthi uvala njalo isondlo sokungena nokufaka esikhundleni. Ezinye izingxenye nazo zijwayele ukuhluleka okwenziwa ngamashini, okufana ne-X-ray collimator okuyingxenye yomshini kulula ukuphuma ekulawuleni, inamathele; ukuhluleka kwe-fan emva komsebenzi wesikhathi eside; Isignali yokulawula ukujikeleza kwe-generator generator ingase ivele futhi ngenxa yokugqoka noma ukulimala njengokulahlekelwa kwezinto eziphazamisayo.
 
b · X-ray ingxenye yephutha elenziwe
 
I-X-ray CT yokukhiqiza umshini wokukhiqiza umshini kusuka kulezi zici ezilandelayo: inverter ephezulu, high voltage transformers, tube ezimbili-ray kanye nesifunda sokulawula, i-cable high voltage. Ingxenye eyodwa ye-inverter esemqoka isetshenziselwa ukuguqulwa ibe yinkinga ephansi ehlanganisiwe kwi-high-voltage transformer primary. Amaphutha avamile yilawa:
 
(1) ukuhluleka-ray ithrekhi ngokwayo: efana ukujikeleza anode ukwehluleka, kubonakala njengomsindo omkhulu ojikelezayo. Kunzima ukushintsha. Kuqhubekile, ukuvezwa okuvezwe lapho izimo ze-anode ezihamba phambili; i-filament ingxenye yephutha, i-filament off. Isizathu asikho imisebe; I-X-ray ingilazi yesikhumba segesi esiyisisekelo sokulahlekelwa ukuvuza okubangelwa ukuqhuma noma ukuvuza, ukungabonakali, ukwehlisa i-vacuum, ukushisa okukhulu kwamandla nokunye nokunye.
 
(I-2) idala ukucindezela okukhulu kwesigaba sephutha: ukuhluleka kwesiphazamitha, ukuchithwa, njll, i-high-voltage transformer short-circuit, high voltage capacitor ukushisa, ukuchithwa. Lokhu kuhluleka kuvame ukuholela ekufakeni i-fuse ehambelanayo. Ngesikhathi esifanayo asikwazi ukudalulwa, noma ukuvezwa kokuvikelwa okuzenzakalelayo kokuphazanyiswa.
 
(3) i-high-voltage cable iphutha: i-connector ejwayelekile ivulekile, eyenza ukushisa, i-voltage noma i-voltage ephakeme, i-voltage cable kuqala ekuqaleni kwe-CT X-ray tube rotation emva kokusebenzisa isikhathi eside, -izicucu zokubhebhethekisa, lezi zihluleka zivame ukuhambisana nomfutho wokugubha.
 
c · ingxenye yekhompyutha yephutha
 
Ukungabikho kokuhluleka kwekhompiyutha kuncane kakhulu, kulula ukulungisa, njengekhibhodi evamile, igundane, ithrekhi ye-trackball, ezinye izinkinga ezincane. Iningi liyi-disk eyinkimbinkimbi, ukushayela amateyipu, ukwehluleka kwe-magneto-optical, okubangelwa i-disk eyinkimbinkimbi nokusetshenziswa okuqhubeka isikhathi eside, indawo eyingozi ikhula kancane kancane, okuholela ekulimaleni okuphelele.
 
Ufuna ukwazi okwengeziwe ngomshini we-CT, imishini ye-X-ray isebenzisa i-voltage ephezulu ye-ceramic capacitor, sicela uvakashele ku-www.hv-caps.com 
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