Yuav Ua Li Cas Thiaj Li Sensor: 5 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:27

Kev qhia qhia Yuav ua li cas thiaj ua rau InfraRed (IR) sib thooj sib nqus sensor Circuit nrog rau kev piav qhia ntxaws txog yuav ua li cas Circuit Court ua haujlwm. Qhov rhiab heev lossis Ntau qhov kev kuaj pom kuj tuaj yeem tswj tau los ntawm kev kho lub zog ntsuas.

Kauj ruam 1: Tutorial Video

Kauj Ruam 2: Cov Cheeb Tsam Yuav Tsum Tau

1. LM 358 IC2.1 InfraRed LED PhotoDiode pair3. Resistors: 470, 270R, 10K4. Potentiometer: 10K5.pcb lossis breadboard6.9v roj teeb thiab clip7.led8.buzzer9.ic puag

Kauj Ruam 3: Piav Qhia ntawm Circuit's Ua Haujlwm:

Qhov kev pom zoo tiv thaiv hauv Circuit no yog IR yees duab-diode. Ntau qhov InfraRed lub teeb poob ntawm IR photodiode, ntau yog tam sim no ntws los ntawm nws. (Lub zog los ntawm IR nthwv dej tau nqus los ntawm cov tshuab hluav taws xob ntawm p-n kev sib tshuam ntawm IR photodiode, uas ua rau muaj dej ntws tam sim no) Qhov tam sim no thaum ntws los ntawm 10k resistor, ua rau muaj peev xwm sib txawv (voltage) los tsim. Qhov loj ntawm qhov hluav taws xob no tau muab los ntawm Ohm txoj cai, V = IR. Raws li tus nqi ntawm tus tiv thaiv tsis tu ncua, qhov hluav taws xob hla tus tiv thaiv ncaj qha ncaj qha mus rau qhov loj ntawm qhov ntws tam sim no, uas tig mus ncaj qha rau tus nqi ntawm Infra-Red nthwv dej tshwm sim ntawm IR photodiode. So, thaum muaj ib yam khoom raug coj los ze rau IR LED, Duab-Diode khub, tus nqi ntawm cov duab hluav taws xob los ntawm IR LED uas xav txog thiab ntog ntawm IR photodiode nce thiab yog li ntawd qhov hluav taws xob ntawm tus tiv thaiv nce (los ntawm kev txiav tawm hauv kab lus dhau los). Peb sib piv qhov kev hloov pauv no (ze ntawm qhov khoom, ntau dua yog qhov hluav taws xob ntawm 10K resistor / IR photodiode) nrog qhov ntsuas hluav taws xob ruaj khov (Tsim los siv lub zog ntsuas hluav taws xob). Ntawm no, LM358 IC (Sib piv / OpAmp) tau siv los sib piv cov ntsuas thiab ntsuas qhov ntsuas hluav taws xob. Lub davhlau ya nyob twg zoo ntawm photodiode (Qhov no yog lub ntsiab lus qhov hluav taws xob hloov pauv mus rau qhov khoom nrug) txuas nrog rau qhov tsis hloov pauv ntawm OpAmp thiab qhov ntsuas hluav taws xob tau txuas nrog rau kev hloov pauv ntawm OpAmp. ntawm qhov tsis hloov pauv tswv yim yog ntau dua qhov hluav taws xob ntawm kev hloov pauv cov tswv yim, cov zis tawm ON. Thaum tsis muaj ib yam khoom nyob ze ntawm IR qhov sib thooj sensor, peb xav tau LED kom raug tua. Yog li peb hloov kho lub hwj chim kom ua rau qhov hluav taws xob ntawm kev hloov pauv ntau dua qhov tsis hloov pauv. Yog ib yam khoom siv mus rau IR qhov sib thooj sensor, qhov hluav taws xob ntawm photodiode nce thiab qee qhov taw tes qhov hluav taws xob ntawm qhov tsis hloov pauv hloov ua ntau dua inverting input, uas ua rau OpAmp tig rau LED Nyob rau tib yam, thaum cov khoom txav mus deb dua los ntawm IR qhov sib thooj sensor, qhov hluav taws xob ntawm qhov tsis hloov pauv tswv yim txo qis thiab ntawm qee kis dhau los tsawg dua inverting input, uas ua rau OpAmp tua cov LED.

Kauj Ruam 4: Daim duab Circuit Court

Kauj Ruam 5: Phau Ntawv Qhia Troubleshooting

1. Txhua ob-xyuas txhua qhov kev sib txuas los ntawm kev xa mus rau daim duab qhia chaw. 2. Txheeb xyuas seb LED ua haujlwm tau zoo. (Cov koob yees duab digital tuaj yeem txheeb pom lub teeb InfraRed, yog li koj tuaj yeem tshawb xyuas yog tias InfraRed LED ua haujlwm los ntawm kev siv lub koob yees duab digital twg) 3. Lub duab IR-diode siv hauv daim vis dis aus no yog dawb thiab IR LED yog dub. Tab sis nws kuj tuaj yeem yog lwm txoj hauv kev hauv koj rooj plaub. Koj tuaj yeem txiav txim siab qhov twg yog LED/Photo-diode los ntawm kev txuas ob lub diode, daim duab-diode khub sib cais rau lub zog siv (ntawm 220 tus tiv thaiv) thiab pom qhov twg ci ci siv lub koob yees duab digital. potentiometers lub pob qhov rooj, LED yuav tsum tau tawm thiab ntawm lwm txoj haujlwm hnyav, LED yuav tsum nyob. Tam sim no koj tuaj yeem pib tig lub pob qhov rooj ntawm lub zog ua haujlwm qhov twg LED qhib, kom txog thaum LED tsuas yog tua. Tam sim no IR sib thooj sensor yuav tsum ua haujlwm kom raug.