Yuav Ua Li Cas Tsim Tus Nqi Tus Nqi ECG Tus Nqi Qis: 26 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24

Nyob zoo txhua tus!

Kuv lub npe yog Mariano thiab kuv yog kws kho mob biomedical. Kuv tau siv qee hnub so los tsim thiab paub txog tus qauv ntawm tus nqi qis ECG ntaus ntawv raws Arduino pawg thawj coj txuas nrog ntawm Bluetooth mus rau Android ntaus ntawv (smartphone lossis ntsiav tshuaj). Kuv xav qhia kuv qhov "ECG SmartApp" txoj haujlwm nrog koj thiab koj yuav pom txhua cov lus qhia thiab software los tsim ECG ntaus ntawv. Lub cuab yeej tsuas yog tsim los ua qhov haujlwm tshawb fawb thiab nws tsis yog lub cuab yeej siv kho mob yog li thov nyeem Cov Lus Ceeb Toom ua ntej yuav mus. Cov cuab yeej tau tsim los ntawm cov khoom siv kho vajtse kom tau txais ECG cov cim los ntawm lub cev thiab Android App los sau, ua haujlwm thiab khaws cov cim.

Kev tsim qauv yooj yim thiab teeb tsa yog qhov kev pom zoo rau qhov muaj ob tus nqi qis (ob peb yam) thiab ua haujlwm tau zoo. Yog tsis suav nrog Lub Xov Tooj Smartphone thiab cov khoom pov tseg (hluav taws xob thiab roj teeb), tag nrho cov cuab yeej raug nqi ib puag ncig 40 Euro (43 Asmeskas las).

Txoj haujlwm ECG cov cuab yeej no tsuas yog tsim los ua haujlwm tshawb fawb thiab nws tsis yog cov cuab yeej siv kho mob, yog li thov nyeem Cov Lus Ceeb Toom thiab teeb meem kev nyab xeeb hauv cov kauj ruam tom ntej ua ntej yuav mus.

Kauj ruam 1: Ceeb toom

Txoj haujlwm ECG cov cuab yeej no tsuas yog tsim los ua phiaj xwm tshawb fawb thiab nws tsis yog cov cuab yeej siv kho mob. Tsuas siv roj teeb nkaus xwb (cov khoom siv hluav taws xob siab tshaj: 9V). TSIS TXHOB siv cov khoom siv hluav taws xob AC, hloov hluav taws xob lossis lwm yam khoom siv hluav taws xob kom tsis txhob raug mob loj thiab hluav taws xob poob rau koj tus kheej lossis lwm tus. Tsis txhob txuas ib qho AC-kab siv lub cuab yeej lossis cov cuab yeej siv rau ECG cov cuab yeej ntawm no tau thov. Cov cuab yeej ECG txuas nrog hluav taws xob rau ib tus neeg thiab tsuas yog cov roj teeb hluav taws xob qis (max 9V) yuav tsum tau siv rau kev ceev faj txog kev nyab xeeb thiab tiv thaiv kev puas tsuaj rau lub cuab yeej. Kev tso cov electrodes ntawm lub cev muab txoj hauv kev zoo rau kev ntws tam sim no. Thaum lub cev txuas nrog ib qho khoom siv hluav taws xob twg, koj yuav tsum tau ceev faj heev vim nws tuaj yeem ua rau muaj hluav taws xob loj thiab ua rau tuag taus. Cov kws sau ntawv tsis tuaj yeem lav lub luag haujlwm rau qhov raug mob uas tshwm sim los ntawm kev siv ib qho ntawm cov kab hluav taws xob lossis cov txheej txheem tau piav qhia hauv phau ntawv no. Cov kws sau ntawv tsis lees tias ib qho ntawm cov kab hluav taws xob lossis cov txheej txheem muaj kev nyab xeeb. Siv ntawm koj tus kheej txoj kev pheej hmoo. Nws yog ib qho tseem ceeb uas txhua tus neeg uas xav tsim lub cuab yeej no muaj kev nkag siab zoo ntawm kev siv hluav taws xob kom nyab xeeb thiab tswj tau.

Kauj Ruam 2: Xav Tau Cov Ntaub Ntawv Software (Android App thiab Arduino Sketch)

Cov cuab yeej ECG tuaj yeem tsim tau yooj yim thiab tsuas yog kev paub pib ntawm cov khoom siv hluav taws xob xav tau kom paub txog cov khoom siv hluav taws xob. Tsis muaj kev paub txog software tsim nyog xav tau txij li txhua yam koj xav tau yog txhawm rau nruab App los ntawm kev qhib apk cov ntaub ntawv los ntawm lub xov tooj Andriod thiab xa cov duab kos Arduino ntawm Arduino board (qhov no tuaj yeem ua tau yooj yim los ntawm kev siv Arduino Software IDE thiab ib qho ntawm ntau qhov kev qhia muaj nyob hauv lub vev xaib).

Ib qho 2.0 ntawm App kuj tseem muaj nrog rau cov yam ntxwv tshiab rau ntsuas ECG thiab ntxiv cov lej qis dhau ntawm 100 Hz thiab 150 Hz). Version 1.0 tau sim hauv Android 4 thiab 6 thaum Version 2.0 tau sim hauv Android 6 thiab 10.

Kauj ruam 3: Kev piav qhia

Cov cuab yeej siv roj teeb thiab suav nrog lub hauv ntej-kawg Circuit kom tau txais ECG cov cim (txwv tsis pub coj mus) los ntawm cov khoom siv hluav taws xob thiab Arduino pawg thawj coj los siv digital teeb liab analog thiab xa mus rau Android smartphone ntawm Bluetooth raws tu qauv. Cov cuam tshuam App pom lub teeb liab ECG hauv lub sijhawm tiag tiag thiab muab lub peev xwm los lim thiab khaws cov teeb liab hauv cov ntawv.

Kauj Ruam 4: Los Ua Ke Phau Ntawv & Cov Neeg Siv

Txhua cov lus qhia ntxaws los tsim ECG lub cuab yeej kuj tseem tuaj yeem pom hauv Cov Lus Qhia Los Ua Ke thaum txhua cov ntaub ntawv siv nws tau piav qhia hauv Cov Ntaub Ntawv Cov Neeg Siv.

Kauj ruam 5: HARDWARE DESCRIPTION

Kev tsim qauv yooj yim thiab teeb tsa yog kev pom zoo rau kev muaj ob qho tib si tus nqi qis (ob peb yam) thiab ua tau zoo.

Cov khoom siv roj teeb (+Vb) Arduino board thiab coj L1 thaum lub cuab yeej qhib (R12 = 10 kOhm tswj L1 tam sim no); tag nrho cov cuab yeej yog muab los ntawm Arduino 5 V qhov hluav taws xob tso tawm (+Vcc). Yeej lub cuab yeej ua haujlwm nruab nrab ntawm 0 V (-Vcc) thiab 5 V (+Vcc), txawm li cas los xij ib qho khoom siv tau hloov pauv mus rau ob qho khoom siv los ntawm qhov faib hluav taws xob nrog cov sib npaug sib npaug (R10 thiab R11 = 1 MOhm), ua raws los ntawm kev sib koom ua ke tau txais (1/2 TL062). Cov zis muaj 2.5 V (nruab nrab qhov hluav taws xob ntawm TL062 lub zog xa khoom: 0-5 V); qhov zoo thiab qhov tsis zoo ntawm lub hwj chim tom qab ntawd muab cov khoom siv ob (± 2.5 V) nrog rau kev hwm rau qhov dav dav dav (tus nqi siv). Cov capacitors C3 (100 nF), C4 (100 nF), C5 (1 uF, electrolytic) thiab C6 (1 uF, electrolytic) ua rau cov khoom siv hluav taws xob ruaj khov dua. Txog qhov teeb meem kev nyab xeeb, txhua qhov hluav taws xob txuas nrog lub cuab yeej los ntawm kev tiv thaiv tiv thaiv ntawm 560 kOhm (R3, R4, R13) txhawm rau txwv qhov tam sim no ntws mus rau tus neeg mob thaum muaj qhov ua txhaum hauv lub cuab yeej. Cov resistors siab no (R3, R4, R13) yuav tsum tau siv tawm tsam qhov xwm txheej tsis tshua muaj tshwm sim thaum lub zog hluav taws xob qis (6 lossis 9 V, raws li siv lub roj teeb siv hluav taws xob) los ncaj qha rau tus neeg mob ua rau raug mob, lossis vim yog INA tivthaiv poob. Dhau li, ob lub CR siab lim lim (C1-R1 thiab C2-R2), muab tso rau ntawm ob lub tswv yim, thaiv lub dc tam sim no thiab txo qis pliaj dc thiab lub suab qis qis uas tau tsim los ntawm kev sib cuag ntawm cov hluav taws xob. ECG teeb liab yog li siab dhau lim ua ntej lub suab nrov nrov nrog txiav tawm ib puag ncig 0.1 Hz (ntawm -3 dB). Lub xub ntiag ntawm R1 (raws li R2) txo qhov kev siv tswv yim ntawm theem ua ntej ua kom lub teeb liab raug txo los ntawm qhov ntsuas nyob ntawm tus nqi R1 thiab R3 (raws li R2 thiab R4); xws li yuav tau kwv yees li:

R1 / (R1 + R3) = 0.797 yog R1 = 2.2 MOhm thiab R2 = 560 kOhm

Nws yog qhov kev pom zoo ntau dua los xaiv ob peb C1 - C2 (1 uF, zaj duab xis capacitor) nrog lub peev xwm muaj txiaj ntsig zoo nyob ze ib leeg, ob peb R1- R2 (2.2 MOhm) nrog cov txiaj ntsig tiv taus sib ze thiab zoo ib yam rau ob peb R3 - R4. Hauv txoj kev no, qhov tsis xav tau txo qis thiab tsis nthuav dav los ntawm cov cuab yeej siv suab nrov (INA128). Ib qho tsis sib xws ntawm cov kab hluav taws xob tsis sib xws ntawm cov khoom siv hauv ob txoj kab hluav taws xob nkag ua rau kev puas tsuaj ntawm CMRR; cov khoom siv no yuav tsum ua kom zoo sib xws (txawm tias lub cev teeb tsa) kom lawv ua siab ntev yuav tsum tau xaiv tsawg li sai tau (piv txwv li tus neeg teb xov tooj tuaj yeem ntsuas lawv qhov txiaj ntsig ntawm tus kheej nrog lub multimeter thiaj li xaiv ob peb yam nrog cov txiaj ntsig kom ze li sai tau.). R5 (2.2 kOhm) piav qhia INA128 nce raws li cov mis:

G_INA = 1 + (50 kΩ / R5)

ECG teeb liab tau nthuav dav los ntawm INA thiab ua tiav qib siab lim los ntawm C7 thiab R7 (nrog -3 dB txiav tawm zaus ib puag ncig 0.1 Hz yog C7 = 1 uF thiab R7 = 2.2 MOhm) kom tshem tawm ib qho dc offset voltage ua ntej kawg thiab ua kom muaj zog ntau dua los ntawm kev ua haujlwm ua suab nrov (1/2 TL062) hauv kev teeb tsa uas tsis hloov pauv nrog qhov nce:

G_TL062 = 1 + (R8 / (Rp + R6))

Txhawm rau kom tus neeg siv hloov pauv qhov tau txais ntawm lub sijhawm ua haujlwm, tus neeg teb xov tooj tuaj yeem xaiv siv qhov sib txawv resistor (trimmer / potentiometer) hloov Rp lossis poj niam lub qhov (socket) rau lub resistor uas tuaj yeem hloov pauv tau (vim tias tsis muag). Txawm li cas los xij, hauv thawj kis nws tsis tuaj yeem paub tseeb qhov tseeb tau txais txiaj ntsig ntawm ECG teeb liab (qhov txiaj ntsig hauv mV ntawm cov ntaub ntawv yuav tsis raug) thaum nyob hauv rooj plaub thib ob nws tuaj yeem muaj qhov txiaj ntsig raug hauv mV los ntawm kev qhia tshwj xeeb tus nqi Rp hauv tus lej "Tau Txais" sab hauv "Chaw" ntu ntawm app (saib Cov Neeg Siv Phau Ntawv Qhia). C8 lub tshuab hluav taws xob tsim cov lim qis dhau nrog -3 dB txiav tawm ib puag ncig 40 Hz raws li RC lim tsim los ntawm R9 thiab C9. Tus nqi txiav tawm zaus yog muab los ntawm tus qauv:

f = 1 / (2*π*C*R).

Rau cov lim qis dhau @ 40 Hz [1], RC cov khoom muaj txiaj ntsig yog:

R8 = 120 kOhm, C8 = 33 nF, R9 = 39 kOhm, C9 = 100 nF

Lub ECG teeb liab yog li lim hauv cov qhab ntawm 0.1 thiab 40 Hz thiab ua kom nrov nrog qhov nce sib npaug rau:

Tau txais = 0.797 * G_INA * G_TL062

Txij li R5 = 2, 2 kOhm, R8 = 120 kOhm, R6 = 100 Ohm, Rp = 2, 2 KOhm, Tau = 0.797 * (1+50000 /2200) * (1+120000 / (2200+100)) = 1005

Txhawm rau kom muaj qhov txiaj ntsig raug rau qhov lim tawm txiav tawm zaus, RC lim cov khoom siv yuav tsum muaj kev ua siab ntev li tsawg li sai tau (piv txwv li tus neeg teb xov tooj tuaj yeem ntsuas lawv cov txiaj ntsig ntawm tus kheej nrog lub multimeter thiaj li xaiv qhov ze rau qhov xav tau tus nqi).

Cov teeb liab sib piv yog digitalized los ntawm Arduino board (A0 input channel) thiab tom qab ntawd xa mus rau HC-06 module los ntawm cov lej sib txuas lus txuas; thaum kawg, cov ntaub ntawv raug xa mus rau lub xov tooj ntawm tes los ntawm Bluetooth.

Cov siv hluav taws xob siv (dub) yog nyob ntawm yeem thiab tuaj yeem raug tshem tawm los ntawm kev tshem lub jumper J1 (lossis tus neeg teb xov tooj tuaj yeem siv qhov hloov pauv hloov lub jumper). Kev teeb tsa Circuit yog tsim los ua haujlwm nrog ob lub electrodes; txawm li cas los xij, qhov siv hluav taws xob siv yuav tsum tau siv kom muaj lub teeb liab zoo dua (suab nrov qis).

Kauj Ruam 6: QHOV TSEEB

Los ntawm kev suav nrog Lub Xov Tooj Smartphone thiab cov khoom siv pov tseg (hluav taws xob thiab roj teeb), tag nrho cov cuab yeej raug nqi ib puag ncig 43 Asmeskas las (ntawm no txiav txim siab ib yam khoom; thaum muaj ntau dua, tus nqi yuav qis dua).

Txog cov ncauj lus kom ntxaws ntawm txhua qhov khoom siv (cov lus piav qhia thiab tus nqi kwv yees), thov saib Cov Lus Qhia Los Ua Ke.

Kauj Ruam 7: Xav Tau Cov Cuab Yeej

- Xav tau Cov Cuab Yeej: tester, clippers, soldering iron, solder wire, screwdriver and pliers.

Kauj Ruam 8: YUAV UA LI CAS YUAV UA LI CAS - Kauj Ruam 1

- Npaj lub rooj sib txig ua qauv ua ntu nrog 23x21 qhov (ncig 62 mm x 55 mm)

- Raws li PCB txheej txheej saum toj kawg nkaus tau qhia hauv cov duab, cov laug: cov tiv thaiv, txuas xov hlau, poj niam lub qhov ((Rp) qhov), txiv neej thiab poj niam header txuas (poj niam header txuas txoj haujlwm ntawm no qhia hauv cov duab yog tsim rau Arduino Nano lossis Arduino) Micro), capacitors, Coj

Kauj Ruam 9: YUAV UA LI CAS YUAV UA LI CAS - Kauj Ruam 2

- Txuas txhua lub Cheebtsam raws li PCB txheej txheej hauv qab no qhia.

Kauj ruam 10: YUAV UA LI CAS YUAV UA LI CAS - KAUJ RUAM 3

- Paub txog lub xaim txuas rau lub roj teeb uas siv lub pluaj/lub roj teeb, poj niam lub taub hau txuas thiab cov cua sov ntsws ntsws; txuas nws mus rau PCB "con1" (txuas 1)

Kauj Ruam 11: YUAV UA LI CAS YUAV UA LI CAS - Kauj Ruam 4

- Paub txog peb lub xov tooj hluav taws xob (siv cov coaxial cable, cov poj niam txuas lub taub hau, cov cua sov ua kom sov, cov kab nab kuab) thiab txuas lawv mus rau PCB nruj lawv rau hauv pawg thawj coj nrog qee cov hlua tawv

Kauj Ruam 12: YUAV UA LI CAS YUAV UA LI CAS - Kauj Ruam 5

- Ua tiav qhov hloov pauv (siv qhov hloov pauv swb, poj niam lub taub hau txuas, cov cua sov ntsws) thiab txuas nws mus rau PCB

- Muab INA128, TL062 thiab Rp resistor rau hauv cov xov xwm sib tham

- Txoj Haujlwm (saib ntu Nqe Lus Qhia Txog Software) thiab txuas rau Arduino Nano board (perforated prototype board thiab poj niam lub taub hau txuas yuav tsum tau hloov kho ntawm PCB yog tias siv lwm lub Rooj Tswjhwm Saib Arduino (piv txwv li UNO lossis Nano))

- Txuas HC-06 tus qauv rau PCB "con2" (txuas 2)

Kauj Ruam 13: YUAV UA LI CAS YUAV UA LI CAS - KAUJ RUAM 6

- Txuas lub jumper J1 kom siv cov electrode siv

- Txuas lub roj teeb

Kauj Ruam 14: YUAV UA LI CAS YUAV UA LI CAS - Kauj Ruam 7

- Muab lub voj voos tso rau hauv lub thawv tsim nyog nrog qhov rau Led, cov kab hluav taws xob thiab hloov pauv.

Cov lus piav qhia ntxaws ntxiv tau qhia hauv cov ntawv los ua ke.

Kauj Ruam 15: LWM YAM XAIV

- ECG teeb liab rau kev tshuaj xyuas daim ntawv thov raug lim ntawm 0.1 txog 40 Hz; cov qhab qis tshaj ntawm cov lim qis dhau tuaj yeem nce ntxiv los ntawm kev hloov R8 lossis C8 thiab R9 lossis C9.

- Hloov ntawm Rp tus tiv thaiv, lub laum lossis lub zog tuaj yeem siv los hloov qhov nce (thiab ua kom nrov dua ECG teeb liab) ntawm lub sijhawm ua haujlwm.

- Lub tshuab ECG tuaj yeem ua haujlwm nrog rau cov laug cam sib txawv. Arduino Nano thiab Arduino UNO tau sim. Lwm cov laug cam tuaj yeem siv tau (xws li Arduino Micro, Arduino Mega, thiab lwm yam) txawm li cas los xij qhov muab Arduino kos duab cov ntaub ntawv xav tau kev hloov kho raws li cov yam ntxwv ntawm pawg thawj coj saib.

-Lub tshuab ECG tuaj yeem ua haujlwm nrog HC-05 qhov hloov pauv HC-06 ib qho.

Kauj Ruam 16: SOFTWARE DESCRIPTION

Tsis xav tau kev paub txog software programming.

Arduino Programming: Arduino kos duab cov ntaub ntawv tuaj yeem rub tawm ntawm Arduino board tau yooj yim los ntawm kev txhim kho Arduino Software IDE (rub tawm dawb los ntawm Arduino lub vev xaib raug cai) thiab ua raws cov lus qhia muaj nyob ntawm Arduino lub vev xaib raug cai. Ib daim duab kos (“ECG_SmartApp_skecht_arduino.ino”) rau ob qho tib si Arduino Nano thiab Arduino UNO tau muab (cov duab kos tau sim nrog ob lub laug cam). Cov duab tib yam yuav tsum ua haujlwm nrog Arduino Micro (pawg thawj coj no tsis tau sim). Txog rau lwm lub Rooj Tswjhwm Saib Arduino, cov ntawv kos duab yuav xav tau kev hloov pauv. Txhim kho ECG SmartApp: Txhawm rau teeb tsa App, theej muab apk cov ntaub ntawv "ECG_SmartApp_ver1.apk" (lossis "ECG_SmartApp_ver1_upTo150Hz.apk" nyob rau hauv cov ntaub ntawv ntawm bandwidth ntawm 150 Hz) ntawm lub xov tooj nco, qhib nws thiab ua raws cov lus qhia los ntawm txais kev tso cai. Ib qho 2.0 kuj tseem muaj suav nrog cov yam ntxwv tshiab rau ntsuas ECG thiab ntxiv cov lej qis dhau ntawm 100 Hz thiab 150 Hz).

Version 1.0 tau raug sim ntawm Android 4 thiab 6 thaum Version 2.0 tau sim hauv Android 6 thiab 10.

Ua ntej txhim kho, nws yuav xav tau hloov lub xov tooj smartphone los ntawm kev tso cai teeb tsa app los ntawm cov chaw tsis paub (zuam lub thawv ntawm "Tsis paub qhov chaw" xaiv ntawm "Kev Nyab Xeeb" ntawv qhia zaub mov). Txhawm rau txuas ECG lub cuab yeej nrog HC-06 (lossis HC-05) Bluetooth Module, kev sib txuas tus lej lossis tus lej zais yuav raug nug thaum kis thawj Bluetooth txuas nrog tus qauv: sau "1234". Yog tias App tsis pom Bluetooth Module, sim ua khub lub xov tooj smartphone nrog HC-06 (lossis HC-05) Bluetooth Module los ntawm kev siv lub xov tooj smartphone Bluetooth Teeb (khub code "1234"); qhov haujlwm no xav tau ib zaug xwb (thawj qhov txuas).

Kauj Ruam 17: Cov Ntaub Ntawv

Txhawm rau hloov kho lossis kho tus kheej, App xaiv cov ntaub ntawv muaj nyob ntawm no:

Cov txuj ci tsim txuj ci hauv Android xav tau. Cov ntaub ntawv.zip suav nrog cov ntaub ntawv xws li: java kev ua haujlwm, kos tau, pom hauv xov tooj ntawd, teeb tsa, ntawv qhia zaub mov - cov ntaub ntawv nyoos (qee qhov piv txwv ECG kaw). Koj tuaj yeem tsim koj tus kheej los ntawm kev suav nrog thiab kho tus kheej cov ntaub ntawv.

Kauj Ruam 18: Pib Nrog ECG SMARTAPP - Kauj Ruam 1

- Nco ntsoov tias lub roj teeb (qhov siab tshaj plaws muab: 9V) txuas nrog lub cuab yeej raug them

- Ntxuav daim tawv nqaij ua ntej tso electrodes. Qhuav cov tawv nqaij tuag, feem ntau muaj nyob rau ntawm peb lub cev, thiab muaj huab cua khoob ntawm cov tawv nqaij thiab cov hluav taws xob tsis pab txhawb ECG teeb liab xa mus rau cov hluav taws xob. Yog li yuav tsum muaj qhov ntub dej ntawm cov hluav taws xob thiab daim tawv nqaij xav tau. Cov tawv nqaij yuav tsum tau muab ntxuav (ntaub ntaub so nrog cawv lossis tsawg kawg dej) ua ntej tso cov electrode gel pawm (pov tseg).

- Muab cov electrodes raws li cov lus hauv qab no. Yog tias tsis muaj cov hluav taws xob pov tseg, cov electrode conductive gel (muaj muag hauv khw) yuav tsum tau siv nruab nrab ntawm daim tawv nqaij thiab cov hlau electrode lossis tsawg kawg yog lub ncoo ntawm cov ntaub so tes so hauv cov kais dej lossis hauv cov kua ntsev.

Cov cuab yeej tso cai rau sau ECG (LI, LII lossis LIII) los ntawm kev siv tsuas yog 2 lub tshuab hluav taws xob; qhov siv hluav taws xob siv (dub) yog nyob ntawm yeem thiab tuaj yeem raug tshem tawm los ntawm kev siv hloov lossis tshem tawm lub jumper J1 (saib Cov Lus Qhia Los Ua Ke). Txawm li cas los xij, qhov siv hluav taws xob siv yuav tsum tau siv kom muaj lub teeb liab zoo dua (suab nrov qis).

Kauj Ruam 19: Pib Nrog ECG SMARTAPP - Kauj Ruam 2

- Hwj chim ntawm lub cuab yeej ECG los ntawm kev siv lub hloov (liab coj tig rau)

- Khiav App ntawm lub smartphone

-Nias lub pob "ON" txhawm rau txuas lub xov tooj ntawm tes mus rau ECG lub cuab yeej (App yuav nug koj kev tso cai qhib Bluetooth: nias "Yog") thiab tos kom pom qhov pom ntawm HC-06 (lossis HC-05) Bluetooth Module ntawm ECG ntaus ntawv. Pairing tus lej lossis tus lej zais yuav raug nug thaum thawj Bluetooth txuas nrog tus qauv: sau "1234". Yog tias App tsis pom Bluetooth Module, sim ua khub lub xov tooj smartphone nrog HC-06 (lossis HC-05) Bluetooth Module los ntawm kev siv lub xov tooj smartphone Bluetooth Teeb (khub code "1234"); qhov haujlwm no xav tau ib zaug (thawj qhov txuas)

- Thaum tsim kev sib txuas, lub teeb liab ECG yuav tshwm ntawm qhov screen; Yog tias LI (lub hauv paus ua yog LI, txhawm rau hloov cov hmoov txhuas thov mus rau kab lus "Teeb") lub plawv dhia (HR) yuav raug kwv yees raws sijhawm. Lub teeb liab yuav raug hloov kho txhua txhua 3 vib nas this

- Txhawm rau thov lub lim dej digital, nyem "Lim" khawm thiab xaiv lim los ntawm cov npe. Los ntawm lub neej ntawd, lub lim qis dhau @ 40 Hz thiab lub lim dej lim (raws li qhov nyiam khaws tseg hauv Chaw) tau siv.

Kauj Ruam 20: Kev teeb tsa

- Nias lub pob "Teeb." kom qhib qhov teeb tsa/nplooj ntawv nyiam

- Nias “Tus Neeg Siv Phau Ntawv (help.pdf)” kom qhib phau ntawv siv cov neeg siv

- Xaiv ECG cov hlau lead (LI yog lub hauv paus)

- Xaiv lub lim dej lim dej (raws li qhov cuam tshuam zaus: 50 lossis 60 Hz)

- Xaiv qhov kev xaiv khaws cov ntaub ntawv kom txuag tau ECG teeb liab lim lossis tsis lim tawm ntawm cov ntawv

- Nias lub pob "Txuag chaw" kom txuag qhov nyiam

Tau txais tus nqi tuaj yeem hloov pauv thaum kho vajtse hloov kho lossis tus kheej ntawm ECG ntaus ntawv.

Kauj Ruam 21: Sau ECG SIGNAL

- Ntxig lub npe cov ntaub ntawv (yog tias tus neeg siv sau ntau lub cim ECG hauv tib ntu uas tsis hloov npe cov ntaub ntawv, qhov ntsuas tau nce ntxiv tom kawg ntawm cov npe ntawv kom tsis txhob rov sau dua cov ntaub ntawv yav dhau los)

- Nias "Rec." khawm kom pib sau cov cim ECG

- Nias "Nres" khawm kom tsis txhob kaw

- Txhua lub teeb liab ECG yuav muab khaws cia rau hauv txt cov ntaub ntawv hauv daim nplaub tshev "ECG_Files" tso rau hauv lub hauv paus tseem ceeb ntawm lub xov tooj smartphone. ECG teeb liab tuaj yeem khaws cia lim lossis tsis lim raws li qhov nyiam khaws tseg hauv qhov chaw

- Nias "Restart" khawm kom pom dua qhov ECG teeb liab tau txais hauv lub sijhawm ua haujlwm

- Txhawm rau sau cov cim ECG tshiab, rov ua cov ntsiab lus yav dhau los

Ib daim ntawv ECG muaj cov qauv ntawm cov qauv (piv txwv piv txwv: 600 Hz) ntawm ECG teeb liab teeb liab hauv mV.

Kauj Ruam 22: Qhib thiab Txheeb Xyuas Ib Daim Ntawv ECG

- Nias "Qhib" khawm: cov npe ntawm cov ntaub ntawv khaws cia hauv "ECG_Files" nplaub tshev yuav tshwm

- Xaiv cov ntawv ECG kom pom kev

Thawj ntu ntawm ECG cov ntaub ntawv yuav raug tso tawm (10 vib nas this) yam tsis muaj kab sib chaws.

Tus neeg siv tuaj yeem rub tus kheej ntawm lub vijtsam kom pom lub sijhawm luv ntawm ECG teeb liab.

Txhawm rau nthuav dav lossis nthuav tawm tus neeg siv tuaj yeem nyem rau ntawm lub iav tsom iav (lub kaum sab xis nyob hauv qab ntawm kab ntawv) lossis siv lub pinch zoom ncaj qha ntawm lub xov tooj smartphone.

Lub sijhawm axis, lub zog hluav taws xob thiab tus qauv ECG daim phiaj yuav tshwm sim thaum lub sijhawm luv dua 5 vib nas this yuav pom (los ntawm kev nthuav dav). Voltage axis (y-axis) qhov tseem ceeb yog mV thaum lub sijhawm-axis (x-axis) qhov tseem ceeb yog vib nas this.

Txhawm rau thov lub lim dej digital, nyem "Lim" khawm thiab xaiv lim los ntawm cov npe. Los ntawm lub neej dhau los tus lej qis qis @ 40 Hz, lub lim dej kom tshem tawm txoj kab uas hla mus thiab cov lim dej thais (raws li qhov nyiam khaws tseg hauv qhov chaw) tau siv. Cov duab kab lus qhia:

- lub npe ntaub ntawv

- ECG zaus band raws li cov lim dej thov

- daim ntawv lo "txoj hauv kev hloov mus los raug tshem tawm" yog tias siv lub hauv paus lim dej tsis zoo

- daim ntawv lo "~ 50" lossis "~ 60" raws li daim ntawv thov lim lim

Tus neeg siv tuaj yeem ntsuas (lub sijhawm luv lossis qhov dav) ntawm ob lub ntsiab lus ntawm kab ntawv los ntawm kev siv "Tau Pt1" thiab "Tau Pt2" khawm. Txhawm rau xaiv thawj lub ntsiab lus (Pt1) tus neeg siv tuaj yeem nias "Tau Pt1" thiab xaiv tus kheej taw tes ntawm ECG teeb liab los ntawm txhaj ncaj qha ntawm kab ntawv: lub ntsiab lus liab yuav tshwm ntawm ECG xiav teeb liab; yog tias tus neeg siv plam qhov ECG nkhaus, tsis muaj lub ntsiab lus yuav raug xaiv thiab "tsis xaiv qhov taw tes" txoj hlua yuav tshwm: tus neeg siv yuav tsum rov xaiv dua. Yuav tsum ua cov txheej txheem ib yam los xaiv qhov thib ob (Pt2). Ua li no, qhov sib txawv (Pt2 - Pt1) ntawm lub sijhawm qhov tseem ceeb hauv ms (dX) thiab qhov dav qhov dav hauv mV (dY) yuav tshwm. Lub pob "Clear" tshem tawm cov ntsiab lus xaiv.

Tus neeg siv tuaj yeem hloov kho ECG teeb liab tau txais los ntawm kev siv "+" khawm (kom nthuav dav) thiab "-" khawm (kom txo qis); qhov nce siab tshaj: 5.0 thiab qhov nce tsawg kawg: 0.5

Kauj ruam 23: FILTERS MENU

- TSIS MUAJ Cov lim dej: tshem tawm txhua daim ntawv thov lim dej

- Tshem tawm txoj hauv kev mus los: siv cov txheej txheem tshwj xeeb kom tshem tawm txoj kev taug kev ntawm lub hauv paus. Yog tias lub teeb liab nrov nrov, kev ua haujlwm yuav ua tsis tiav

- Siab dhau 'x' Hz: siv IIR qib siab lim raws li qhov tshwj xeeb txiav tawm zaus 'x'

Tsawg dhau 'x' Hz: siv IIR qis dhau lim raws li qhov tshwj xeeb txiav tawm zaus 'x'

- 50 Hz tshem tawm ON (thais+LowPass 25 Hz): siv qhov tshwj xeeb ruaj khov FIR lim uas yog ob qho thais ntawm 50 Hz thiab Tsawg Pass ntawm ib ncig 25 Hz

- 60 Hz tshem tawm ON (thais+LowPass 25 Hz): siv qhov tshwj xeeb ruaj khov FIR lim uas yog ob qho thais ntawm 60 Hz thiab Tsawg Pass ntawm ib ncig 25 Hz

- 50 Hz tshem tawm ON: siv lub lim dej rov ua dua ntawm 50 Hz

- 60 Hz tshem tawm ON: siv lub lim dej rov ua dua ntawm 60 Hz

- 50/60 Hz tshem tawm OFF: tshem tawm daim ntawv thov lim dej

Kauj Ruam 24: HARDWARE SPECIFICATIONS

-Max tawm tswv yim teeb liab amplitude (ncov-rau-ncov): 3.6 mV (Max cov teeb liab tawm tswv yim amplitude nyob ntawm qhov kho vajtse nce)

- Cov khoom siv hluav taws xob: Siv XWB RATTERIES (ob leeg tuaj yeem them rov qab thiab tsis them rov qab)

- Tsawg Voltage muab: 6V (piv txwv li 4 x 1.5V roj teeb)

- Max Voltage mov: 9V (piv txwv li 6 x 1.5V lossis 1 x 9V roj teeb)

Zauv zaus: 600 Hz

- Zaus Bandwidth @ - 3dB (Kho vajtse): 0.1 Hz - 40 Hz (Cov qhab sab saud qis ntawm cov lim qis tuaj yeem nce ntxiv 0.1 Hz - 150 Hz, los ntawm kev hloov RC lim cov khoom (saib Cov Lus Qhia Los Ua Ke)

- CMRR: min1209 dB

- Kev nthuav dav (Kho vajtse_Gain): 1005 (nws tuaj yeem hloov pauv los ntawm kev hloov qhov nce resistor (saib Cov Lus Qhia Los Ua Ke) - Kev daws teeb meem: 5V / (1024 x Hardware_Gain)

- Kev tsis ncaj ncees tam sim no max 10 nA - Tus naj npawb ntawm ECG raws: 1

ECG Leads: limb coj LI, LII thiab LIII

- Kev sib txuas ntawm Smartphone: ntawm Bluetooth

Theoretical Supply Tam sim no: <50 mA (Raws li cov ntaub ntawv cov ntaub ntawv ntawm cov khoom sib txawv)

- Ntsuas Kev Muab Tam Sim No: <60 mA (Nrog rau 9V qhov hluav taws xob thiab Arduino Nano)

- Tus naj npawb ntawm cov electrodes: 2 lossis 3

Cov cuab yeej tso cai rau sau ECG (LI, LII lossis LIII) los ntawm kev siv tsuas yog 2 lub tshuab hluav taws xob; qhov siv hluav taws xob siv (dub) yog nyob ntawm yeem thiab tuaj yeem raug tshem tawm los ntawm kev tshem lub jumper J1 (lossis hloov S2, saib cov ntawv los ua ke phau ntawv). Txawm li cas los xij, qhov siv hluav taws xob siv yuav tsum tau siv kom muaj lub teeb liab zoo dua (suab nrov qis).

Kauj Ruam 25: SOFTWARE SPECIFICATIONS

- ECG pom thaum lub sijhawm kaw (lub sijhawm lub sijhawm: 3 vib nas this)

- Lub plawv kwv yees kwv yees (tsuas yog rau LI)

Zauv zaus: 600 Hz

- ECG teeb liab kaw thiab khaws cia rau hauv txt cov ntaub ntawv (lim lossis lim tawm cov cim tuaj yeem raug cawm hauv cov ntawv txt raws li qhov teeb tsa) ntawm lub xov tooj ntawm tes nco (nplaub tshev: "ECG_Files" tso rau hauv lub hauv paus loj)

- Cov ntaub ntawv (kuaj) raug khaws tseg raws li qhov muaj nuj nqis hauv mV ntawm 600 Hz (tus nqi ntawm 16 tus lej)

- Khaws cov ntaub ntawv pom nrog xaiv qhov dav, kab sib chaws, nce kev hloov pauv (los ntawm “x 0.5” txog “x 5”) thiab xaiv ob lub ntsiab lus (ntsuas lub sijhawm nrug thiab qhov sib txawv qhov sib txawv)

- Smartphone zaub: App teeb tsa hloov pauv rau cov duab sib txawv; txawm li cas los kom pom kev zoo dua, nws raug pom zoo yam tsawg kawg yog 3.7 '' zaub nrog daws teeb meem 480 x 800 pixels

Cov lim dej:

High pass filtering @ 0.1, 0.15, 0.25, 0.5, 1 Hz

- Tsawg dhau lim @ 25, 35, 40 Hz (@ 100 thiab 150 Hz muaj nyob hauv ECG SmartApp version rau bandwidth ntawm 150 Hz)

- Tshaj tawm lim kom tshem tawm lub zog cuam tshuam @ 50 lossis 60 Hz

- Kev tshem tawm txoj hauv kev taug kev mus los

Kauj Ruam 26: Tau TUAJ

www.ecgsmartapp.altervista.org/index.html