Iimitha zokuhamba zizixhobo ezibalulekileyo ezisetyenziselwa ukulinganisa ukuhamba kolwelo kunye neegesi kwiindlela ezahlukeneyo zoshishino kunye norhwebo. Phakathi kweentlobo ezahlukeneyo zeemitha zokuhamba ezikhoyo, iimitha zokuhamba zeDoppler kunye neemitha zokuhamba kwexesha lokuhamba zisetyenziswa kakhulu ekulinganiseni ukuhamba komoya okungangeneleliyo. Ukuqonda umahluko phakathi kwezi ntlobo zimbini zeemitha zokuhamba kubalulekile ekukhetheni isixhobo esifanelekileyo kwiimfuno ezithile zokulinganisa ukuhamba komoya.
IiDoppler flowmeters zisebenza ngomgaqo weDoppler effect, equka utshintsho kwi-wave frequency enxulumene nokuhamba komjongi. Ezi flowmeters zisebenzisa amaza e-ultrasonic adluliselwa kwi-flowing liquids. Xa amaza e-ultrasound edibana namaqhekeza okanye amaqamza kulwelo, i-frequency yamaza iyatshintsha ngenxa ye-Doppler effect. Ngokuhlalutya i-frequency shift, i-Doppler flow meter inokubala i-flow rate yolwelo.
Kwelinye icala, iimitha zokuhamba kwexesha lokuhamba zisebenza ngokulinganisa ixesha elithathwayo ukuze isignali ye-ultrasonic ihambe phakathi kwee-transducers ezimbini. Ezi mitha zokuhamba zinezinzwa ezimbini ezisebenza njengee-transmitters ze-ultrasonic kunye nee-receivers. Esinye isinzwa sithumela isignali ye-ultrasonic kwicala lokuhamba, ngelixa esinye isinzwa sifumana isignali. Iimitha zokuhamba kwexesha lokuhamba zimisela izinga lokuhamba kolwelo ngokulinganisa ixesha elithathwayo ukuze isignali ihambe phezulu nasezantsi.
Omnye womahluko ophambili phakathi kweDoppler kunye neemitha zokuhamba komoya kuhlobo lolwelo ezilufaneleyo. Iimitha zokuhamba komoya zeDoppler zilungele ukulinganisa ulwelo olunezinga eliphezulu lamasuntswana okanye amaqamza, njengemanzi amdaka okanye amaqhekeza, apho amasuntswana okanye amaqamza anokubangela ukutshintsha kwemvamisa ye-ultrasonic. Ngokwahlukileyo koko, iimitha zexesha lomoya zilungele ngcono ulwelo olucocekileyo olunomxholo ophantsi kakhulu wamasuntswana, njengamanzi kunye neekhemikhali.
Omnye umahluko usekwe ekufakweni nasekubekweni kwemitha yokuhamba. Iimitha zokuhamba zeDoppler zifuna ubukho beengceba okanye amaqamza kulwelo ukuze zilinganise ngokuchanekileyo isantya sokuhamba, nto leyo enokunciphisa iindlela zokufaka. Iimitha zexesha lokuhamba, kwelinye icala, zinokufakwa kuluhlu olubanzi lwezicelo ngenxa yokukwazi kwazo ukulinganisa ulwelo olucocekileyo ngaphandle kobukho beengceba okanye amaqamza omoya.
Ukuchaneka nokuthembeka zizinto ezibalulekileyo ekufuneka ziqwalaselwe xa ukhetha phakathi kweDoppler kunye neemitha zokuhamba ngesantya esiphezulu. Ukuchaneka kweDoppler flowmeter kunokuthintelwa xa ulwelo lunenani elikhulu lamaqamza okanye uxinzelelo lwamasuntswana luphantsi kakhulu. Kwelinye icala, iimitha zokuhamba ngesantya esiphezulu zaziwa ngokuchaneka kwazo okuphezulu ekulinganiseni ulwelo olucocekileyo, nto leyo eyenza ukuba zilungele ukusetyenziswa apho umlinganiselo ochanekileyo wokuhamba ngesantya esiphezulu ubalulekile.
Ngamafutshane, zombini iimitha zokuhamba zeDoppler kunye neemitha zokuhamba kwexesha lokuthutha zibonelela ngezisombululo ezingangenisi manzi zokulinganisa amazinga okuhamba kwiindlela ezahlukeneyo zokusetyenziswa kolwelo. Ukuqonda umahluko phakathi kwezi ntlobo zimbini zeemitha zokuhamba, kubandakanya indlela ezisebenza ngayo, ukufaneleka kweentlobo ezahlukeneyo zolwelo, iimfuno zokufakelwa kunye nokuchaneka, kubalulekile ekukhetheni imitha yokuhamba efanelekileyo kwiimfuno zakho ezithile zokulinganisa ukuhamba. Ngokuqwalasela ezi zinto, abasebenzisi banokwenza izigqibo ezinolwazi ukuqinisekisa ukulinganiswa kokuhamba okuchanekileyo nokuthembekileyo kwimisebenzi yabo.
Ixesha leposi: Meyi-19-2024