I-thermistors ye-Negative (NTC) isetyenziswa njengamacandelo ezivamvo zobushushu ezichanekileyo kwiintlobo ngeentlobo zeemoto, kwimizi-mveliso, kwisixhobo sasekhaya kunye nezicelo zonyango.Ngenxa yokuba iintlobo ngeentlobo zee-thermistors ze-NTC ziyafumaneka - zenziwe ngoyilo olwahlukileyo kwaye zenziwe ngezinto ezahlukeneyo - ukukhetha ezona zibalaseleyo.NTC thermitorskwisicelo esithile kunokuba ngumngeni.
NgobakhethaNTC?
Kukho iitekhnoloji ezintathu eziphambili zeqondo lokushisa, nganye ineempawu zayo: i-thermistors yokumelana nobushushu (RTD) kunye neentlobo ezimbini ze-thermistors, i-coefficient ye-coefficient thermistors.Izinzwa ze-RTD zisetyenziselwa ukulinganisa uluhlu olubanzi lwamaqondo obushushu, kwaye ngenxa yokuba zisebenzisa isinyithi esicocekileyo, zivame ukuba zibiza kakhulu kune-thermistors.
Ke ngoko, ngenxa yokuba izifudumezi zilinganisa ubushushu ngokuchaneka okufanayo okanye okungcono, zihlala zikhethwa ngaphezu kwe-RTDS.Njengoko igama lithetha, ukuxhathisa kwe-coefficient yokushisa epholileyo (PTC) thermistor inyuka ngobushushu.Ngokuqhelekileyo zisetyenziswa njengezinzwa zomda weqondo lokushisa kwi-switch-off okanye kwiisekethe zokhuseleko ngenxa yokuba ukuxhathisa kuphakama xa ubushushu bokutshintsha bufikelelwe.Kwelinye icala, njengoko iqondo lobushushu linyuka, ukuxhathisa kweqondo lobushushu elibi (NTC) thermistor liyehla.Ukumelana nobushushu (RT) ubudlelwane yigophe elisicaba, ngoko ichanekile kwaye izinzile kwimilinganiselo yobushushu.
Iikhrayitheriya zokukhetha eziphambili
Izifudumezi ze-NTC zinovakalelo oluphezulu kwaye zinokulinganisa ubushushu ngokuchaneka okuphezulu (±0.1°C), zizenze zilungele uluhlu olubanzi lwezicelo.Nangona kunjalo, ukhetho loluphi uhlobo lokucacisa luxhomekeke kwinani leenqobo - uluhlu lweqondo lokushisa, uluhlu lokumelana, ukuchaneka komlinganiselo, indawo, ixesha lokuphendula, kunye neemfuno zobukhulu.
Izinto ze-NTC ezigqunywe yiEpoxy zomelele kwaye zilinganisela amaqondo obushushu aphakathi kwe -55°C kunye + 155°C, ngelixa izinto zeNTC ezigqunywe ngeglasi zifikelela + 300°C.Kusetyenziso olufuna amaxesha okuphendula akhawulezayo, izinto ezifakwe kwiglasi zilukhetho olufanelekileyo.Zikwaxinene ngakumbi, ezinobubanzi obuncinci njenge-0.8mm.
Kubalulekile ukufanisa ubushushu be-NTC thermistor kwiqondo lobushushu lecandelo elibangela utshintsho lobushushu.Ngenxa yoko, azifumaneki kuphela kwifom yemveli kunye nezikhokelo, kodwa zinokuxhonywa kwizindlu zohlobo lwe-screw ukuze zifake kwi-radiator ukwenzela ukunyuswa komhlaba.
Ezintsha kwimarike azinalothe ngokupheleleyo (itshiphu kunye necandelo) ii-thermistors ze-NTC ezihlangabezana neemfuno ezingqongqo zomyalelo we-RoSH2 ozayo.
IsiceloExampleOisishwankathelo
Amacandelo enzwa ye-NTC kunye neenkqubo ziphunyezwa kuluhlu olubanzi lweenkalo, ngakumbi kwicandelo leemoto.Usetyenziso oluqhelekileyo luquka amavili okuqhuba ashushu kunye nezihlalo, kunye neenkqubo zolawulo lwemozulu eziphucukileyo.I-Thermistors isetyenziswa kwiinkqubo zokukhupha i-gas recirculation (EGR), i-intake manifold (AIM) sensors, kunye neqondo lokushisa kunye ne-manifold absolute absolute sensors (TMAP).Uluhlu lwabo olubanzi lobushushu bokusebenza lunempembelelo ephezulu yokuchasa kunye namandla okungcangcazela, ukuthembeka okuphezulu, kunye nobomi obude kunye nokuzinza kwexesha elide.Ukuba ii-thermistors ziza kusetyenziswa kwizicelo zeemoto, ngoko ke ukuxhathisa uxinzelelo lwe-AEC-Q200 umgangatho wehlabathi jikelele apha kunyanzelekile.
Kwizithuthi zombane kunye ne-hybrid, izinzwa ze-NTC zisetyenziselwa ukhuseleko lwebhetri, ukubeka iliso kwii-windings zombane kunye nesimo sokutshaja.Inkqubo yokupholisa yefriji epholisa ibhetri iqhagamshelwe kwisixokelelwano somoya.
Ukuva amaqondo obushushu kunye nolawulo kwizixhobo zekhaya kubandakanya uluhlu olubanzi lwamaqondo obushushu.Umzekelo, kwindawo yokomisa iimpahla, aisivamvo sobushushuimisela ubushushu bomoya oshushu oqukuqela kwigubu kunye nobushushu bomoya ophumayo xa uphuma kwigubu.Ukupholisa kunye nokukhenkceza, iUluvo lwe-NTCilinganisa iqondo lobushushu kwigumbi lokupholisa, ithintela i-evaporator ekukhenkceni, kwaye ibona nobushushu obukummandla.Kwizixhobo ezincinci ezifana neentsimbi, abenzi bekofu kunye neeketile, izinzwa zobushushu zisetyenziselwa ukhuseleko kunye nokusebenza kakuhle kwamandla.Ukufudumeza, ukungena komoya kunye ne-air conditioning (HVAC) iiyunithi zithatha icandelo lemarike enkulu.
INdawo yoNyango ekhulayo
Intsimi yezobuchwephesha bonyango inezixhobo ezahlukeneyo zokunyanga izigulane ezilaliswayo, izigulane zangaphandle kunye nokhathalelo lwasekhaya.Ii-thermistors ze-NTC zisetyenziswa njengamacandelo okuqonda ubushushu kwizixhobo zonyango.
Xa isixhobo esincinci sonyango esiphathwayo sihlawuliswa, ubushushu bokusebenza kwebhetri etshajwayo kufuneka bubekwe esweni rhoqo.Oku kungenxa yokuba iimpendulo ze-electrochemical ezisetyenziswa ngexesha lokubeka iliso ubukhulu becala zixhomekeke kubushushu, ngokukhawuleza, uhlalutyo oluchanekileyo lubalulekile.
Iipatches ze-Glucose Monitoring (GCM) zinokubeka iliso kumanqanaba eswekile yegazi kwizigulane ezinesifo seswekile.Apha, inzwa ye-NTC isetyenziselwa ukulinganisa ubushushu, njengoko oku kunokuchaphazela iziphumo.
Unyango oluqhubekayo lwe-Positive Airway (CPAP) lusebenzisa umatshini wokunceda abantu abane-apnea yokulala baphefumle lula xa belele.Ngokufanayo, kwizigulo zokuphefumla eziqatha, ezinje nge-COVID-19, ii-ventilators ezinoomatshini zithatha ukuphefumla kwesigulana ngokucinezela umoya ngobunono emiphungeni yazo kwaye zisuse ikharbon diokside.Kuzo zombini iimeko, i-NTC sensors efakwe ngeglasi idityaniswe kwi-humidifier, i-catheter yomoya kunye nomlomo wokungena ukulinganisa ukushisa komoya ukuqinisekisa ukuba izigulane zihlala zikhululekile.
Ubhubhani wamva nje uqhube imfuno yobuntununtunu obukhulu kunye nokuchaneka kwezinzwa ze-NTC ezinozinzo lwexesha elide.Umvavanyi omtsha wentsholongwane uneemfuno ezingqongqo zolawulo lobushushu ukuqinisekisa ukusabela okufanayo phakathi kwesampulu kunye ne-reagent.I-smartwotshi ikwadityaniswe nenkqubo yokubeka iliso kwiqondo lobushushu ukulumkisa ngezigulo ezinokubakho.
Ixesha lokuposa: May-25-2023