Active Low Pass Filter RC Siv hauv Cov Haujlwm Nrog Arduino: 4 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Tinkercad Cov Haujlwm »

Cov lim qis dhau yog cov khoom siv hluav taws xob zoo tshaj plaws los lim tawm cov kab mob parasitic los ntawm koj cov phiaj xwm. Ib qho teeb meem tshwm sim hauv cov phiaj xwm nrog Arduino thiab cov tshuab nrog cov ua haujlwm ze rau lub zog hluav taws xob yog qhov muaj "kab mob" cov cim.

Lawv tuaj yeem tshwm sim los ntawm kev co lossis thaj chaw sib nqus hauv thaj chaw ib yam li lub ntsuas cua.

Cov cim no, uas feem ntau yog siv ntau zaus, ua rau muaj kev cuam tshuam thaum lub sijhawm nyeem ntawv thiab, yog li ntawd, kev nyeem tsis raug tshwm sim hauv kev siv tshuab. Ib qho piv txwv sib xws yog pib ntawm lub tshuab uas xav tau lub siab pib tam sim no.

Qhov no yuav ua rau muaj suab nrov ntau zaus hauv ntau lub ntsiab lus uas txuas nrog lub network hluav taws xob, suav nrog cov ntsuas.

Txhawm rau tiv thaiv cov suab nrov no los ntawm kev cuam tshuam rau lub kaw lus, cov lim tau siv nruab nrab ntawm lub cim ntsuas thiab lub kaw lus uas nyeem nws.

Dab tsi yog passive thiab nquag lim?

Khoom siv

• 2 Resistors;
• 2 ceramic capacitors
• 2 Electrolytic capacitors;
• Kev Ua Haujlwm Amplifier LM358
• Lub hwj chim txuas lossis 9V roj teeb;

Kauj Ruam 1: Cov Passive Passive thiab Active Filters yog dab tsi?

Cov lim dej yog cov kab hluav taws xob uas tuaj yeem "ntxuav" lub teeb liab, cais cov cim tsis xav tau, kom zam kev nyeem qhov tseem ceeb uas tsis sib xws nrog qhov tseeb.

Cov lim dej tuaj yeem yog ob hom: passive thiab nquag.

Passive FiltersFilters tuaj yeem ua tau passive, uas yog qhov yooj yim tshaj plaws, vim tias lawv suav nrog tsuas yog cov tiv thaiv thiab cov khoom siv.

Cov lim dej nquag

Cov lim dej nquag, ntxiv rau cov tiv thaiv thiab cov khoom siv, siv amp-ops txhawm rau txhim kho kev lim dej, thiab cov lim dej digital, uas tau siv hauv cov txheej txheem thiab cov tswj hwm microcontrollers.

Yog li, hauv kab lus no, koj yuav kawm:

Nkag siab tias kev lim dej tsawg dhau ua haujlwm li cas;

Kho kho vajtse ntawm cov lim qis dhau nrog kev txiav tawm ntawm 100 Hz siv lub tshuab ua haujlwm LM358;

Xam qhov tseem ceeb ntawm cov khoom siv tsis sib xws ntawm Circuit Court;

Sib sau ua ke cov lim qis dhau NextPCB.

Hauv qab no, peb nthuav qhia cov txheej txheem ntawm kev txhim kho cov lim qis dhau rau peb cov kev sib txuas nrog Arduino.

Kauj Ruam 2: Kev Txhim Kho ntawm Active Low Pass Filter RC Circuit

Hauv txoj haujlwm no qhov ntsuas qis qis qis yuav raug tsim nrog NEXTPCB - Luam Circuit Board, uas yog, nws tso cai rau peb kom dhau tsawg zaus. Qhov ntau zaus uas yuav tau xaiv yog nyob ntawm kev ua haujlwm ntawm Circuit.

Rau kab lus no peb yuav siv lub lim qis dhau, raws li lawv tau siv rau zaus qis dua 1MHz, thiab, ntxiv rau, teeb liab ua kom tiav tuaj yeem ua tiav, vim tias yuav ua haujlwm ua haujlwm nrov yuav siv rau hauv Circuit Court no.

Yog li ntawd, raws li txoj haujlwm no, lub hauv paus tseem ceeb yuav yog kev txhim kho ntawm cov khoom siv hluav taws xob lim qis thiab nws cov khoom siv hluav taws xob sib npaug. Daim duab 1 qhia txog kev kho vajtse ntawm lub voj voog no.

Qhov tsawg dhau lim RC Circuit tsim hauv TinkerCAD tuaj yeem nkag mus rau qhov txuas hauv qab no:

Raws li tau hais, peb siv Arduino hauv txoj haujlwm no txhawm rau kom tau txais lub teeb liab los ntawm lub ntsuas cua. Yog li, qhov qis dhau lim RC Circuit hauv daim duab saum toj no peb muaj 3 ntu tseem ceeb:

• Lub teeb liab generator,
• Cov lim dej nquag thiab;
• Arduino rau khaws cov ntaub ntawv sensor.

Lub tshuab hluav taws xob teeb liab yog lub luag haujlwm rau kev sim ua haujlwm ntawm lub ntsuas hluav taws xob thiab xa cov teeb liab mus rau Arduino. Lub teeb liab no yog tom qab lim los ntawm qis lim lim RC thiab, tom qab ntawd, lub teeb liab lim tau nyeem thiab ua tiav los ntawm Arduino.

Yog li, txhawm rau ua qhov kev sib dhos ntawm qhov qis dhau lim RC peb yuav xav tau cov khoom siv hluav taws xob hauv qab no:

• 2 Resistors;
• 2 ceramic capacitors
• 2 Electrolytic capacitors;
• Kev Ua Haujlwm Amplifier LM358
• Lub hwj chim txuas lossis 9V roj teeb

Tom ntej no, peb nthuav qhia qhov kev suav ntawm qhov tseem ceeb ntawm cov resistors thiab cov khoom siv hluav taws xob hauv Circuit Court. Kev suav ntawm cov khoom no yog ua raws qhov qis dhau lim lim txiav tawm ntawm cov lim dej nquag.

Resistor thiab Capacitor Calculations

Rau qhov kev thov hauv Circuit Court, peb yuav siv lub lim qis dhau qhov kev txiav tawm ntawm 100Hz. Txoj hauv kev no, lub Circuit Court yuav tso cai kom muaj ntau zaus hla hauv qab 100Hz thiab siab dua 100Hz, lub teeb liab yuav poob qis.

Yog li ntawd, rau kev suav ntawm cov khoom siv hluav taws xob, peb muaj: Thaum pib, nws txaus los txhais tus nqi ntawm C1, qhov xwm txheej twg tus nqi lag luam ntawm 1 txog 100nF tuaj yeem txhais tau.

Tom ntej no, peb ua qhov kev suav ntawm capacitor C2 raws li kab zauv hauv qab no.

Tom qab ntawd siv cov qauv hauv qab no los xam tus nqi R1 thiab R2. Cov mis tuaj yeem siv los ua phiaj xwm tus nqi ntawm ob tus tiv thaiv. Tom ntej no, saib qhov kev suav ua tiav.

Qhov twg f*C yog qhov qis dhau lim lim txiav tawm, uas yog, siab dua qhov zaus, qhov nce ntawm lub teeb liab no yuav poob qis. Tus f*C tus nqi rau cov kab ke no yuav yog 100 Hz.

Yog li, peb muaj tus nqi tiv thaiv hauv qab no rau R1 thiab R2.

Los ntawm cov txiaj ntsig tau txais rau tus tiv thaiv thiab lub peev xwm ntawm qhov haujlwm, peb yuav tsum tsim cov khoom siv hluav taws xob rau lub lim dej. Txog hom lim dej no, peb yuav tsum siv cov khoom siv hluav taws xob asymmetrical thiab, tom ntej no, peb yuav nthuav tawm cov khoom siv hluav taws xob.

Kauj Ruam 3: Lub Hwj Huam Fais Fab

Lub zog xav tau rau lub voj voog no yog lub zog hluav taws xob sib npaug. Yog tias koj tsis muaj lub zog siv hluav taws xob sib dhos, sib sau ua ke cov khoom siv hluav taws xob uas siv hluav taws xob yooj yim.

Txawm li cas los xij, tus nqi hluav taws xob ntawm lub zog xa hluav taws xob yuav tsum ntau dua 10V, vim tias tus nqi ntawm qhov sib npaug sib npaug yuav muab faib ua 2.

Daim duab saum toj no qhia txog Circuit Court ntawm lub hwj chim.

Lub voj voog no twb muaj nyob hauv daim duab hluav taws xob hauv daim duab 1, txij li siv cov khoom siv tsis sib thooj sib xws.

Tom qab tsim cov txheej txheem lim dej nquag thiab nws cov khoom siv hluav taws xob, peb tsim cov lim hluav taws xob los siv rau hauv koj cov phiaj xwm nrog Arduino lossis hauv lwm qhov haujlwm uas xav tau lim dej rau lub hom phiaj no.

Tom ntej no, peb yuav nthuav qhia cov txheej txheem ntawm cov txheej txheem hluav taws xob thiab tsim los ntawm cov khoom siv hluav taws xob tsim.

Cov ntawv luam tawm Circuit Board ntawm Active Low Pass Filter RC

Kauj Ruam 4: Luam Circuit Board Board ntawm Active Low Pass Filter RC

Txhawm rau ua kom lub tshuab hluav taws xob luam tawm Circuit Board - NEXTPCB, kev tsim hluav taws xob hluav taws xob ntawm Circuit Court tau tsim. Cov txheej txheem hluav taws xob ntawm Active Low Pass Filter RC tau qhia hauv daim duab 3.

Tom qab ntawd, cov phiaj xwm tau xa mus rau PCB Tsim ntawm Altium software thiab pawg thawj coj hauv qab no tau tsim, raws li qhia hauv daim duab 4.

Peb tus pin tau siv los muab cov kab hluav taws xob thiab cov teeb liab nkag thiab ob tus pin ntawm qhov tso tawm. Ob tus pin yog siv rau qhov tso tawm ntawm cov teeb liab lim thiab GND ntawm Circuit Court.

Tom qab tsim cov txheej txheem ntawm PCB, 3D tsim ntawm cov ntawv luam tawm Circuit board tau tsim thiab nthuav tawm hauv daim duab 5.

Los ntawm PCB txoj haujlwm, koj tuaj yeem siv tus qauv no thiab siv nws rau koj txoj haujlwm nrog Arduino. Txoj kev no, qee cov cim qhia kab mob yuav raug tso tseg thiab koj txoj haujlwm yuav ua haujlwm yam tsis muaj kev pheej hmoo ntawm kev ua yuam kev hauv kev nyeem cov teeb liab.

Xaus

Qhov kev ua haujlwm qis dhau lim RC Circuit no tuaj yeem siv dav rau lim lub zog ntawm Arduino, lim cov cim ntawm kev sib txuas lus, xws li hauv xov tooj cua zaus, uas feem ntau muaj ntau lub cim qhia uas feem ntau ua rau cuam tshuam hauv kev sib txuas lus, muab tias tus nqi ntawm kev txiav tawm zaus raug hloov pauv.

Cov lus qhia tom qab sib dhos cov Circuit no yog ua kom muaj kev sib txuas ze rau Arduino, vim tias ib feem zoo ntawm kev cuam tshuam yog nyob nrug deb ntawm lub sensor thiab microcontroller, thiab feem ntau, microcontroller tsis tuaj yeem nyob ze, vim tias qhov chaw nyob ntawm lub sensor tuaj yeem ua teeb meem rau Arduino.

Ib qho ntxiv, kom muaj lub teeb liab txuas mus ntxiv, tsuas yog hloov qhov qis dhau lim lim txiav tawm mus rau qhov qis dua, qhov no yuav hloov qhov txiaj ntsig ntawm cov tiv thaiv thiab cov khoom siv hluav taws xob. Nws kuj muaj nws qhov zoo ntawm kev tsim cov txiaj ntsig hauv lub teeb liab, yog tias lub teeb liab qis.

Cov Ntaub Ntawv Tseem Ceeb

Txhua cov ntaub ntawv tuaj yeem nkag mus hauv qhov txuas hauv qab no: Cov Ntaub Ntawv ntawm Cov Ntawv Luam Circuit Board

Koj tuaj yeem tau txais koj tus kheej 10 PCB's thiab them nyiaj nkaus xwb thaum thauj khoom thawj zaug ntawm NextPCB. Txaus siab rau thiab siv txoj haujlwm no nrog koj li Arduino Projects thiab sensors.