Dab tsi yog qhov kub ntc kub sensor?
Txhawm rau kom nkag siab txog kev ua haujlwm thiab kev thov ntawm NTC kub sensor, peb yuav tsum xub paub dab tsi NTC tus cua kub yog.
Yuav ua li cas NTC kub sensor ua haujlwm tsuas piav qhia
Cov neeg soj ntsuam kub yog cov neeg saib xyuas sov yog hluav taws xob cov khoom tawm nrog cov ntsuas kub tsis zoo (NTC kom luv). Yog tias tam sim no ntws los ntawm cov Cheebtsam, lawv cov kev tiv thaiv tsawg zuj zus mus rau qhov kub ntxiv. Yog tias qhov kub ambient kub (piv txwv li hauv lub tes tsho uas siv tau), cov Cheebtsam, ntawm qhov tod tes, hnov nrog nce tsis kam. Vim tias qhov kev coj cwj pwm tshwj xeeb no, cov kws tshaj lij kuj xa mus rau cov NTC tus neeg ntaus nqi ua cov kub ntc.
Hluav taws xob tsis kam txo thaum lub chaw tsim hluav taws xob txav
NTC cov tshuaj tiv thaiv muaj cov ntaub ntawv semiconductor, qhov kev coj ua ntawm uas feem ntau yog nruab nrab ntawm cov hluav taws xob thiab cov hluav taws xob tsis yog. Yog tias cov khoom siv ua kom sov li, ntsuas hluav taws xob los ntawm cov lattice atoms. Lawv tawm ntawm lawv qhov chaw hauv cov qauv thiab kev thauj hluav taws xob zoo dua. Qhov tshwm sim: Nrog rau kev nce kub, kev kub ua hluav taws xob ua hluav taws xob zoo dua - lawv cov hluav taws xob tsis kam. Cov khoom siv tau siv, ntawm lwm yam, raws li qhov ntsuas kub, tab sis rau qhov no lawv yuav tsum txuas nrog qhov chaw voltage thiab ammeter.
Kev tsim khoom thiab cov khoom ntawm cov kub thiab txias
Ib qho kev tiv taus NTC tuaj yeem hnov qab tsis muaj zog lossis, hauv qee thaj chaw, muaj zog heev rau kev hloov pauv ntawm qhov chaw kub. Cov kev coj cwj pwm tshwj xeeb yog nyob ntawm kev tsim cov khoom siv. Nyob rau hauv txoj kev no, cov neeg tsim khoom hloov cov kev sib xyaw ntawm cov oxides lossis doping ntawm cov hlau oxides rau cov neeg xav tau. Tab sis cov khoom ntawm cov Cheebtsam tseem tuaj yeem cuam tshuam nrog kev tsim khoom lag luam nws tus kheej. Piv txwv li, los ntawm cov cov ntsiab lus oxygen hauv kev ua haujlwm ntawm cov khoom siv hluav taws lossis tus neeg txias ntawm cov khoom.
Cov Ntaub Ntawv Sib Txawv Rau Cov Ntc Sosator
Cov Khoom Siv Sandementonductor ntshiab, compound semiconductors lossis nws yog xim hlau alloys tau siv los xyuas kom meej tias cov cua nab coj ua rau lawv tus cwj pwm. Tom kawg feem ntau muaj hlau oxides (sib txawv ntawm cov hlau thiab cov pa roj oxygen) ntawm manganese, npib tsib xee, cooj lossis tooj lossis titanium. Cov ntaub ntawv tau sib xyaw nrog cov neeg sawv cev hauv cov neeg sawv cev, nias thiab sintereded. Cov tuam txhab uas muag sov cov khoom siv raw nyob rau hauv cov kev kub siab rau xws li workpieces nrog cov khoom xav tau tsim.
Cov yam ntxwv raug ntawm tus thermistor ntawm ib nrais muag
Lub NTC resistor muaj nyob rau hauv ranges los ntawm ib ohm mus rau 100 manohms. Cov Cheebtsam muaj peev xwm siv tau los ntawm rho tawm 60 txog ntxiv rau 200 degrees Celsius thiab ua tiav qhov kev thev taus ntawm 0.1 txog 20 feem pua. Thaum nws los xaiv lub thermistor, ntau yam tsis yuav tsum tau coj mus rau hauv tus account. Ib qho tseem ceeb tshaj plaws yog qhov nominal tsis kam. Nws qhia tau tus nqi tiv thaiv ntawm ib qho kub ntawm qhov kub (feem ntau 25 degrees Celsius) thiab yog cim nrog ib peev r thiab qhov kub. Piv txwv li, R25 rau cov nqi tiv thaiv ntawm 25 degrees Celsius. Tus cwj pwm tshwj xeeb ntawm ntau qhov kub kuj tseem muaj feem xyuam. Qhov no tuaj yeem sau nrog cov ntxhuav, cov qauv lossis cov duab thiab yuav tsum ua tiav cov ntawv thov xav tau. Cov xeeb ceem tseem ceeb tshaj plaws ntawm cov NTC cov neeg tiv thaiv cuam tshuam nrog kev ua siab ntev nrog rau qhov kub thiab txias thiab voltage txwv.
Cov chaw sib txawv ntawm daim ntawv thov rau NTC tiv taus
Ib yam li ptc resistor, ib qho ntc resistor, yog ib qho haum rau kev ntsuas kub. Cov nqi tiv thaiv kev hloov pauv raws li qhov kub thiab txias. Txhawm rau kom dag cov txiaj ntsig, cua sov yuav tsum txwv ntau li ntau tau. Txawm li cas los xij, tus cua kub kub thaum lub sijhawm khiav tawm tam sim no tuaj yeem siv los txwv qhov hauv cov hauv nruab tam sim no. Vim tias NTC resistor yog khaub thuas tom qab hloov mus rau cov khoom siv hluav taws xob, yog li ntawd tsuas yog tam sim no ntws thaum xub thawj. Tom qab qee lub sijhawm hauv kev ua haujlwm, cov cua sov kub hnyiab, hluav taws xob tsis kam, cov hluav taws xob ntws tawm thiab ntau qhov tam sim no ntws. Cov hluav taws xob ua tiav lawv cov kev ua tau zoo tag nrho hauv txoj kev no nrog qee lub sijhawm qeeb.
Tus NTC Expectoror ua hluav taws xob tam sim no tsis zoo ntawm cov kub tsawg. Yog tias qhov kub thiab txias nce ntxiv, qhov tsis kam ntawm qhov thiaj li hu ua sov tus neeg xyuas kev txo qis. Tus cwj pwm tshwj xeeb ntawm cov semiconductor tuaj yeem siv feem ntau rau kev ntsuas kub, rau hauv kev txwv tam sim no lossis ncua ntau
Lub Sijhawm Post: Jan-18-2024