Infraqizil datchiklarni quyidagilarga bo'lish mumkin
Dec 19, 2021
(1) Infraqizil nurlarning bir qismini issiqlikka aylantiring va qarshilik qiymatining o'zgarishi va elektromotor kuch kabi chiqish signallarining termal turini olish uchun issiqlikdan foydalaning.
(2) PN birikmasi tufayli energiya farqini va fotoelektromotor kuch ta'sirini yutish uchun yarimo'tkazgich migratsiya fenomenining fotoelektrik effektidan foydalanadigan kvant turi.
Issiqlik hodisasi odatda koks effekti sifatida tanilgan va eng vakili Termal Bolometr, Termopil va Piroelektrik komponentlardir.
Issiqlik turining afzalliklari quyidagilardan iborat: xona haroratida ishlashi mumkin, to'lqin uzunligiga bog'liqlik (turli to'lqin uzunliklarining sezgirligi katta o'zgarishlarga ega) mavjud emas va xarajat past;
Kamchiliklari: past sezuvchanlik va sekin javob (mS spektri).
The advantages of quantum type: high sensitivity and fast response (μS spectrum);
Kamchiliklari: sovutilishi kerak (suyuq azot), to'lqin uzunligi-bog'liq, yuqori narx;
Infrared sensors especially use the sensitivity in the far infrared range for human detection. The wavelength of infrared is longer than visible light and shorter than radio waves. Infrared rays make people think that they are only emitted by hot objects, but in fact this is not the case. All objects that exist in nature, such as humans, fire, ice, etc., emit infrared rays, but their wavelengths are different due to the temperature of the objects. . The body temperature of the human body is about 36-37 degree , and it emits far-infrared rays with a peak value of 9-10μm. In addition, objects heated to 400-700 degree can emit intermediate-infrared rays with a peak value of 3-5μm.
