Pa infrared LED teeb hlaws dai zoo ib yam li qhov pom dav dav LED teeb hlaws, tab sis lawv emit infrared rays. Qhov hluav taws xob feem ntau yog li 1.4v, thiab qhov ua haujlwm tam sim no feem ntau tsawg dua 20mA. Txhawm rau hloov mus rau qhov sib txawv ntawm kev khiav hauj lwm voltages, tam sim no-limiting resistors feem ntau txuas rau hauv lub voj.
Thaum siv infrared LED teeb hlaws dai los tswj cov khoom siv tswj tau sib xws, qhov kev ncua deb tswj los ntawm nws yog proportional rau lub zog xa mus. Txhawm rau kom tswj tau qhov kev ncua deb ntawm infrared rays, lub infrared emission tube ua haujlwm nyob rau hauv lub xeev pulsed, vim hais tias qhov kev sib kis tau zoo ntawm lub teeb pulsating yog proportional rau lub pulsed cua-induced tam sim no, thiab emission nrug ntawm infrared teeb yuav nce los ntawm. nce tus nqi siab tshaj Ip kom ntau li ntau tau. Txoj kev ua kom Ip nce ntxiv yog txo cov pulse lub luag hauj lwm piv, uas yog, compress lub mem tes dav T, txo cov mem tes lub luag hauj lwm piv kuj kuj zoo heev ua rau kom lub emission nrug ntawm lub low-power infrared teeb-emitting diode. Lub zog ntawm cov teeb pom kev zoo tib yam infrared emitting diodes tau muab faib ua peb pawg: lub zog qis, nruab nrab lub zog thiab lub zog siab. Txhawm rau ua kom infrared lub teeb-emitting diodes tsim cov teeb pom kev zoo, tsuas yog qee qhov zaus mem tes voltage yog siv rau lub raj tsav.
Thaum lub teeb ci infrared emitting diode emits infrared rays los tswj cov khoom tswj, muaj cov khoom siv infrared photoelectric hloov dua siab tshiab hauv cov khoom tswj, xws li infrared txais diode, infrared txais lub taub hau, photosensitive triode, thiab lwm yam.
Muaj ob txoj hauv kev xa thiab tau txais cov kab hluav taws xob infrared: ncaj qha thiab cuam tshuam. Direct hom txhais tau hais tias lub luminous raj thiab lub raj txais tau muab tso rau ntawm qhov kawg ntawm lub transmitter thiab cov khoom tswj, nrog rau ib qho kev ncua deb ntawm nruab nrab; hom kev cuam tshuam txhais tau hais tias lub luminous raj thiab lub raj tau txais yog teem rau ib sab, lub txais lub raj yog ib txwm tsis muaj lub teeb, thiab tsuas yog lub teeb infrared emitted los ntawm lub luminous raj thaum lub teeb ntsib lub reflector, lub txais lub raj yuav tsuas ua hauj lwm tom qab. tau txais qhov reflected infrared teeb. Lub dual-tube infrared emission Circuit Court tuaj yeem ua rau kom muaj zog emission thiab ua kom ntau ntawm infrared emission.
Raws li cov yam ntxwv ntawm infrared LED teeb hlaws, nws tuaj yeem siv dav dua raws li qhov sib txawv wavelengths:
1. Wavelength: 808nm, haum rau lub teeb pom kev ntawm cov khoom siv kho mob, chaw sib txuas lus kho qhov muag, teeb pom kev zoo infrared, thiab cov khoom siv hauv lub xeev lasers;
2. Wavelength: 830nm, haum rau tsis siv neeg daim npav swiping system ntawm txoj kev loj (kev pom kev hmo ntuj yog qhov zoo tshaj plaws, koj tuaj yeem pom lub teeb liab me ntsis ntawm qhov tuag, cov nyhuv zoo dua 850nm);
3, Wavelength: 840nm, haum rau lub koob yees duab, xim zoom infrared waterproof;
4. Wavelength: 850nm, haum rau lub koob yees duab, yees duab digital, saib xyuas, tsev intercom, tswb tiv thaiv tub sab, infrared waterproof;
5. Wavelength: 870nm, haum rau cov koob yees duab hauv khw thiab kev sib tshuam;
6. Wavelength: 940nm, haum rau cov chaw taws teeb tswj, xws li cov chaw taws teeb tswj rau cov khoom siv hauv tsev.
