Cov txheej txheem:
- Khoom siv
- Kauj Ruam 1: Sib sau Qhov Yuav Tsum Muaj
- Kauj Ruam 2: Ua Koj Tus Kheej Shunt Resistor
- Kauj Ruam 3: Daim duab Circuit Court ntawm Txoj Haujlwm
- Kauj Ruam 4: Nqa Nws Txhua Qhov Ua Ke …
- Kauj Ruam 5: Calibrating lub Sensor kom muab nyeem tau raug
- Kauj Ruam 6: Qhov Kawg Kawg
Video: DIY Tam sim no Sensor rau Arduino: 6 Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:26
Nyob zoo, vam tias koj ua tau zoo thiab hauv qhov kev qhia no kuv yuav qhia koj li cas kuv tau ua lub ntsuas hluav taws xob tam sim no rau Arduino siv qee yam khoom siv hluav taws xob yooj yim heev thiab tshem tawm hauv tsev. Qhov shunt no tuaj yeem yooj yim daws qhov loj ntawm qhov tam sim no, ib puag ncig 10-15 Amps. Qhov raug kuj tseem zoo nkauj heev thiab kuv tuaj yeem tau txais cov txiaj ntsig tau zoo thaum ntsuas cov dej ntws qis ib puag ncig 100mA.
Khoom siv
- Arduino Uno lossis sib npaug thiab cov phiaj xwm xov hlau
- Qauv Zauv: LM358
- Jumper xov hlau
- 100 KOhm resistor
- 220 KOhm resistor
- 10 Kohm resistor
- Veroboard lossis Zero PCB board
- Shunt (8 txog 10 milliohms)
Kauj Ruam 1: Sib sau Qhov Yuav Tsum Muaj
Cov ntu tseem ceeb uas koj xav tau rau qhov kev tsim no yog Shunt nrog rau lub tshuab ua haujlwm IC ua haujlwm. Rau kuv daim ntawv thov Kuv siv IC LM358 uas yog dual OP-AMP 8 tus pin DIP IC uas kuv siv tsuas yog ib qho ntawm lub tshuab ua haujlwm ua haujlwm. Koj tseem yuav xav tau cov tshuaj tiv thaiv rau Cov Tsis-hloov pauv lub tshuab hluav taws xob hloov pauv. Kuv tau xaiv 320K thiab 10K raws li kuv qhov kev tawm tsam. Kev xaiv ntawm koj qhov kev tiv thaiv tag nrho yog nyob ntawm qhov nyiaj tau los uas koj xav kom muaj. Tam sim no OP-AMP tau tsav los ntawm 5 volt ntawm Arduino. Yog li peb yuav tsum ua kom ntseeg tau tias qhov hluav taws xob tso tawm los ntawm OP-AMP thaum tag nrho tam sim no dhau los ntawm qhov shunt yuav tsum tsawg dua 5 volts, zoo dua 4 volts kom khaws qee qhov ntawm qhov yuam kev. Yog tias peb xaiv qhov tau txais txiaj ntsig uas txaus txaus ces rau tus nqi qis dua tam sim no, OP-AMP yuav nkag mus rau thaj tsam saturation thiab tsuas yog muab 5 volts dhau qhov muaj txiaj ntsig tam sim no. Koj kuj tseem yuav xav tau PCB tus qauv lossis daim ntawv qhia zaub mov los sim qhov Circuit no. Rau cov tswj hwm micro kuv tab tom siv Arduino UNO kom tau txais cov lus tawm los ntawm lub tshuab tso tawm suab. Koj tuaj yeem xaiv ib qho sib npaug Arduino board koj xav tau.
Kauj Ruam 2: Ua Koj Tus Kheej Shunt Resistor
Lub hauv paus tseem ceeb ntawm txoj haujlwm yog shunt resistor siv los muab qhov hluav taws xob me me poob. Koj tuaj yeem yooj yim ua qhov shunt no yam tsis muaj teeb meem ntau. Yog tias koj muaj cov tuab tuab tuab hlau xaim ces koj tuaj yeem txiav qhov ntev uas tsim nyog ntawm cov hlau ntawd thiab tuaj yeem siv ua qhov shunt. Lwm txoj hauv kev rau qhov no yog khaws cia cov khoom tiv thaiv los ntawm qhov qub lossis puas ntau meters ib yam li tau qhia nyob ntawm no. Tam sim no ntau yam koj xav ntsuas feem ntau yog nyob ntawm tus nqi ntawm shunt resistor. Feem ntau koj tuaj yeem siv shunts raws li 8 txog 10 milliohms.
Kauj Ruam 3: Daim duab Circuit Court ntawm Txoj Haujlwm
Nov yog tag nrho txoj kev xav raws li lub caij ntuj sov thiab tseem muaj daim duab qhia chaw ntawm lub ntsuas hluav taws xob tam sim no uas qhia txog kev ua tiav ntawm qhov tsis hloov pauv ntawm OP-AMP muab qhov tsim nyog tau txais. Kuv kuj tau txuas tus 0.1uF lub tshuab hluav taws xob ntawm qhov tso tawm ntawm OP-AMP kom ua kom tawm qhov hluav taws xob tso tawm thiab txo qis suab nrov yog tias nws yuav tshwm sim.
Kauj Ruam 4: Nqa Nws Txhua Qhov Ua Ke …
Tam sim no nws yog lub sijhawm kawg los ua qhov ntsuas qhov ntsuas tam sim no tawm cov khoom no. Txog qhov no kuv txiav tawm ib qho me me ntawm veroboard thiab teeb tsa kuv cov khoom nyob rau hauv txoj hauv kev uas kuv tuaj yeem zam kev siv cov jumper xov hlau lossis txuas txuas thiab tag nrho cov Circuit Court tuaj yeem txuas nrog siv cov khoom sib txuas ncaj qha. Txog kev sib txuas ntawm lub nra los ntawm shunt, Kuv siv cov ntsia hlau txuas, uas ua rau kev sib txuas zoo dua qub thiab tib lub sijhawm ua rau nws yooj yim dua rau hloov/hloov pauv ntau yam uas kuv xav ntsuas tam sim no. Xyuas kom tseeb tias koj xaiv cov ntsia hlau ntawm qhov zoo uas muaj peev xwm tuav tau cov dej loj. Kuv tau txuas qee cov duab ntawm cov txheej txheem txheej txheem thiab raws li koj tuaj yeem pom cov kab laug sab tau tawm los zoo nkauj yam tsis siv lub jumper lossis cov xov hlau txuas. Qhov no ua rau kuv tus qauv tseem ruaj khov dua. Txhawm rau muab koj qhov kev xav ntawm qhov qauv me me no yog kuv khaws nws nrog Indian 2 rupee npib thiab qhov loj me yuav luag sib piv. Qhov loj me me no ua rau koj haum cov qauv no hauv koj cov phiaj xwm yooj yim. Yog tias koj tuaj yeem siv cov khoom SMD, qhov loj tuaj yeem raug txo kom tsawg.
Kauj Ruam 5: Calibrating lub Sensor kom muab nyeem tau raug
Tom qab kev tsim kho tag nrho cov qauv ntawm no los ib ntu me me, ntsuas lossis lossis yuav los nrog cov cai tsim nyog los ntsuas qhov raug ntawm qhov tam sim no. Tam sim no qhov tseem ceeb peb tab tom muab qhov hluav taws xob poob qis ntawm qhov shunt los muab peb qhov hloov pauv hluav taws xob, siab txaus rau Arduino analogRead () ua haujlwm rau npe. Tam sim no qhov kev tiv thaiv tsis tu ncua, qhov hluav taws xob tso tawm yog tawm nrog kev hwm rau qhov loj ntawm tam sim no dhau los ntawm qhov shunt. Txoj hauv kev yooj yim txhawm rau ntsuas qhov ntsuas no yog siv qhov ntsuas qhov tseeb los xam tus nqi tam sim no dhau los ntawm qhov muab rau hauv Circuit. Ntau qhov txiaj ntsig tam sim no, siv cov arduino thiab cov lej ua haujlwm saib, saib seb tus nqi sib piv uas yuav los (xws li ntawm 0 txog 1023. Siv qhov sib txawv raws li cov ntaub ntawv ntab kom tau txais txiaj ntsig zoo dua). Tam sim no peb tuaj yeem muab tus nqi sib piv nrog qhov tas li kom tau txais peb qhov kev xav tau tam sim no thiab txij li kev sib raug zoo ntawm qhov hluav taws xob thiab tam sim no yog kab tawm, qhov tsis tu ncua no yuav luag zoo ib yam rau tag nrho cov kab ke tam sim no, txawm hais tias koj yuav tau ua qee qhov me kev kho tom qab. Koj tuaj yeem sim nrog 4-5 tus paub tam sim no qhov txiaj ntsig kom tau txais koj tus nqi tas li. Kuv yuav tau hais txog cov cai kuv siv rau qhov ua qauv qhia no.
Kauj Ruam 6: Qhov Kawg Kawg
Qhov ntsuas tam sim no ua haujlwm tau zoo nyob rau hauv feem ntau DC siv daim ntawv thov thiab muaj qhov yuam kev tsawg dua 70 mA yog ntsuas kom raug. Yuav ua li cas muaj qee qhov kev txwv ntawm qhov tsim qauv no, ntawm qhov qis heev lossis siab heev tam sim no, qhov sib txawv ntawm qhov txiaj ntsig tiag yog qhov tseem ceeb. Yog li qee qhov kev hloov pauv ntawm cov cai yog qhov tsim nyog rau cov xwm txheej ciam teb. Ib txoj hauv kev yog siv lub ntsuas qhov ntsuas qhov ntsuas, uas muaj cov cuab yeej siv hluav taws xob kom ua kom muaj hluav taws xob tsawg heev thiab tseem tuaj yeem siv rau sab siab ntawm Circuit Court. Tsis tas li ntawd lub Circuit tuaj yeem txhim kho los ntawm kev siv qhov zoo dua, tsis muaj suab nrov OP-AMP. Txog kuv qhov kev qhuas nws ua haujlwm tau zoo thiab muab rov ua dua. Kuv tab tom npaj ua wattmeter, qhov twg kuv yuav siv qhov ntsuas ntsuas tam sim no. Vam tias koj txaus siab rau qhov kev tsim no.
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