Labarai - Ƙa'idar Aiki na Thermopile Infrared Sensor

Ƙa'idar Aiki na Sensor Infrared Thermopile - Tasirin Thermoelectric

Tasirin Thermoelectric (Tasirin Seeebeck)

Idan abubuwa daban-daban guda biyu ko abubuwa A da B waɗanda suke da abu iri ɗaya yayin da aikin aiki daban-daban, lokacin da aka haɗa su a ƙarshen zafi (Yankin Junction Area), buɗe a ƙarshen sanyi (Cold Junction Area), da yanayin zafin jiki tsakanin zafi. karshen da sanyi karshen shine ΔT_HC, don haka a ƙarshen sanyi za a sami ƙarfin thermoelectromotive V_fita.

Lokacin da hasken infrared na waje ya haskaka yankin sha na mai ganowa, yankin shayarwa yana ɗaukar radiation infrared kuma ya canza shi zuwa makamashin zafi.Za a samar da matakan zafin jiki a cikin wurin mahaɗar zafi da yankin mahadar sanyi.Ta hanyar Seebeck Effect na thermocouple abu, za a iya jujjuya zafin zafin jiki zuwa fitowar siginar wutar lantarki.

Tasirin Thermoelectric (Tasirin Seeebeck)

Tace(Halayen tacewa IR na zaɓi ne): zaɓi band ɗin infrared, guje wa sauran tsawon haske don shafar firikwensin.

Cap: da goyon bayan inji tsarin na IR tace.

TPS Chip: don jin siginar infrared wanda ke wucewa ta hanyar tace IR.

Kai: da goyon bayan inji tsarin guntu.

Chip Thermistor(Na zaɓi): saka idanu yanayin yanayin sanyi na guntun TPS.

guntu sarrafa kayan aiki na ASIC(na zaɓi, fitarwa siginar sanyaya): daidaita siginar fitarwa na analog na guntu TPS.

Ana iya ganin cewa ka'idar aiki na guntu firikwensin thermopile shine juzu'i na zahiri sau biyu na "haske-zazzabi-lantarki".Duk wani abu da ke sama da cikakken sifili (ciki har da jikin ɗan adam) yana fitar da haskoki na infrared, idan zaɓi tsayin da ya dace ta hanyar tace infrared (tagar band 5-14μm), lokacin da infrared m abu akan guntu yana ɗaukar zafin infrared kuma ya juya haske zuwa zafi. , sakamakon hauhawar zafin jiki na yankin sha, bambancin zafin jiki tsakanin yankin sha da yanayin junction na sanyi yana juyewa zuwa fitowar wutar lantarki ta hanyar ɗaruruwan saiti na jerin haɗin ma'aunin thermocouples, kuma ana gano siginar infrared bayan fitowar wutar lantarki. halitta.

Duba daga tsarin, firikwensin infrared thermopile na Sunshine Technologies ya bambanta da samfuran yau da kullun, tsarinsa yana "wuta".Akwai babbar wahalar fasaha don wannan tsarin, wato, yadda za a shimfiɗa Layer na fim ɗin dakatarwa mai kauri 1μm akan yanki na 1 mm kawai.², da kuma tabbatar da cewa fim ɗin zai iya samun isasshen juzu'i don canza hasken infrared zuwa fitarwar siginar lantarki, don saduwa da buƙatun ƙarfin sigina na firikwensin.Daidai saboda Sunshine Technologies ya ci nasara kuma ya ƙware wannan ainihin fasaha wanda zai iya karya dogon lokaci na samfuran ƙasashen waje a bugu ɗaya.

Lokacin aikawa: Dec-01-2020