Eber Awoodda Iidajilka Awoodda RT (ω)
RT waxaa loola jeedaa qiimaha iska caabbinta ee lagu cabiro heerkul cayiman oo la adeegsanayo awood la cabiro oo sababa isbedel dayactir ah oo ku dhaca qiimaha caabbinta ee la xidhiidha qalad cabirka.
Xiriirka u dhexeeya qiimaha caabbinta iyo isbedelka heerkulka ee qaybaha elektiroonigga ah waa sida soo socota:
Rt = rn tufaax (1 / t - 1 / tn)
Rt: NTC Heertristor caabbinta heerkulka T (K).
RN: NTC Thermistor caabbinta heerkulka ee heerkulka TN (K).
T: heerkulka cayiman (k).
B: Qalabka joogtada ah ee ntc jir-kulka, oo sidoo kale loo yaqaanno tusaalaha dareenka kuleylka.
Saxeex: Ubaxyo ku saleysan nambarka dabiiciga ah e (e = 2.71828 ...).
Xiriirku waa mid tacliinta leh oo uu leeyahay shahaado sax ah oo keliya oo keliya heerkulka xadidan ee heerkulka tn ama qiimeynta caabbinta rn, maadaama maaddada loo yaqaan 'TN' ee Bist B iskiis u yahay heerkulka T.
Eber eber epadce caabbinta r25 (ω)
Sida laga soo xigtay Heerka Qaranka, qiimaha eber korantada ee loo qiimeeyo waa caabbinta caabbinta r25 oo ay cabirto heerkulka NTC Heerkulka heerkulka tixraaca ee 25 ℃. Qiimaha caabbinta Tani waa qiimaha caabbinta ee loo magacaabay ee heerkulka NTC. Badanaa ayaa sheegta in ntc kuleylka intee le'eg compusice qiimaha, sidoo kale waxaa loola jeedaa qiimaha.
Qalabka joogtada ah (Tilmaanta dareenka kuleylka) B qiime (k)
B Qiimaha waxaa lagu qeexaa sida:
Rt1: iska caabinta tamarta eber ee heerkulka T1 (k).
Rt2: Qiimaha iska caabinta tamarta eber ee heerkulka T2 (k).
T1, T2: Laba heerkul oo cayiman (k).
Loogu tala galay kuleylka caadiga ah ee NTC, Qiimaha B oo u dhexeeya 2000k ilaa 6000k.
Eber Awoodda Cabbirka Heerkulka Awood-jirada (αt)
Saamiga isbedelka qaraabada ee iska caabbinta awoodda eber-eber ah ee heerkulka ntc heerkul cayiman oo ku saabsan isbedelka heerkulka oo sababa isbedelka.
αt: Feejignaanta heerkulka ee heerkulka xoogga iska caabinta tamarta ee heerkulka t (k).
Rt: Qiimaha iska caabinta tamarta eber ee heerkulka t (k).
T: heerkulka (t).
B: Qalabka joogtada ah.
FARSAMADA FARSAMADA (Δ)
Heerkul deegaan oo cayiman, oo ah kuwa tacabka ku takhasusay cudurka ntc kuleylka ntc waa in saamiga korantada lagu shubay isbadalka heerkulka u dhigma ee isbadalka heerkulka u dhigma.
Δ: Feejignaan ku saabsan NTC Theristor, (MW / k).
△ p: Awoodda ay ku kacday ntc theristor (mw).
△ T: NTC Theristor wuxuu cunaa awoodda △ p, heerkulka u dhigma ee heerkulka jirka ee iska caabbinta (K).
Waqtiga kuleylka joogtada ah ee qaybaha elektiroonigga ah (τ)
Marka loo eego xaaladaha awoodda eber, marka heerkulku isbedelo, heerkulka kuleylka kuleylka ah ayaa isbedelaya waqtiga loo baahan yahay 63.2% labada isbarbardhiga ugu horreeya ee heerkulka. Waqtiga kuleylka Joogtada ahi wuxuu u dhigantaa kuleylka kuleylka kuleylka wadnaha ntc iyo sicir barar si uu u dhinto koobiyeheeda kala-baxa.
τ: Waqtiga kuleylka (yaasha).
C: Kuleylka awoodda kuleylka ntc.
Δ: Feejignaanshaha Feejigga NTC Heertristor.
Ku qiimeeyay awoodda pn
Isticmaalka awooda la ogolaan karo ee kuleylka ee hawlgalka joogtada ah ee hawlgalka joogtada ah muddo dheer sida ku xusan xaaladaha farsamada ee cayiman. Awooddan hoos timaada, heerkulka jirka iska caabintu kama badna heerkulka ugu badan ee hawlgalka.
Heerkulka ugu badan ee hawlgalkaTmax: Heerkulka ugu sarreeya ee kuleylka uu si joogto ah ugu shaqeyn karo si joogto ah muddo dheer waqti dheer xaaladaha farsamada ee cayiman. Taasi waa, heerkulka t0-ka ah.
Waxyaabaha elektiroonigga ah ayaa cabiraya PMIT PM
Heerkulka loo cayimay, qiimaha caabbinta ee caabbinta jirka ee kululaynta cabbirka hadda waa la iska indhatiri karaa marka loo eego wadarta qalad cabirka. Waxaa guud ahaan loo baahan yahay in isbedelka qiimaha iska caabbinta uu ka badan yahay 0.1%.
Waqtiga Post: Mar-29-2023