Cov txheej txheem:
- Kauj Ruam 1: Kauj Ruam 1: Tsim Cov Khoom Siv Hluav Taws Xob
- Kauj Ruam 2: Kauj Ruam 2: Tsim Bandpass Lim
- Kauj Ruam 3: Tsim Lub Tshuab Ntsis
- Kauj Ruam 4: Sib Sau Tag Nrho Qhov System Ua Ke
Video: ECG Circuitry hauv LTspice: 4 Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24
Rub tawm LTspice rau mac lossis PC. Cov ntawv no tau ua tiav ntawm mac.
Khoom siv:
LTspice
Kauj Ruam 1: Kauj Ruam 1: Tsim Cov Khoom Siv Hluav Taws Xob
Tsim kom muaj cov cuab yeej siv suab nrov siv cov lej muab. Qhov tau txais ntawm lub tshuab hluav taws xob no yuav yog V0 /Vi = R4 /R3 (1 + 2R2 /R1). Tus nqi tiv thaiv tam sim no ua rau nce ntawm 1000, tab sis tuaj yeem hloov pauv tau yooj yim kom tau txais qhov me me lossis loj dua nyob ntawm qhov xav tau.
Kauj Ruam 2: Kauj Ruam 2: Tsim Bandpass Lim
Cov kab kos txuas nrog qhia yuav tsim lub lim lim bandpass, uas tsuas yog lim siab dhau ua raws los ntawm lim qis. Bandpass lim hauv kab duab ua rau bandpass los ntawm 0.5 Hz txog 150 Hz. Qhov no tuaj yeem hloov pauv tau yooj yim los ntawm kev hloov pauv tus tiv thaiv thiab tus nqi hluav taws xob ntawm qhov siab thiab qis hla cov lim raws qhov sib npaug f = 1/(2*pi*RC), qhov twg f yog qhov txiav tawm zaus. Cov lim siab dhau yuav hloov pauv qis qis ntawm bandpass thiab qis qis yuav hloov pauv qhov siab dua.
Kauj Ruam 3: Tsim Lub Tshuab Ntsis
Yuav tsum muaj lub lim dej lim kom txo suab nrov los ntawm cov khoom siv hluav taws xob. Qhov thais hauv daim duab no tau teeb tsa rau qhov nqis siab tshaj ntawm 60 Hz thiab qhov no tuaj yeem hloov pauv los ntawm kev sib txawv ntawm tus tiv thaiv thiab tus nqi hluav taws xob raws li qhov sib npaug f = 1/(2*pi*RC), qhov twg f yog qhov txiav tawm zaus.
Kauj Ruam 4: Sib Sau Tag Nrho Qhov System Ua Ke
Muab lub tshuab ua kom nrov nrov thiab ob lub lim dej nyob hauv tib cov ntaub ntawv nrog qhov tso tawm ntawm lub tshuab ua suab nrov yog cov tswv yim ntawm bandpass thiab cov txiaj ntsig ntawm bandpass yog cov tswv yim ntawm lub hauv paus lim. Qhov no ua rau muaj kev cuam tshuam tag nrho ntawm ECG ua ntej sib ntxiv ntawm ADC. Txhawm rau sim qhov kev sib tw no AC cheb yuav qhia pom bandpass los ntawm 0.5 Hz txog 150 Hz nrog lub ntsej muag ntawm 60 Hz thiab kev tshuaj xyuas ib ntus yuav qhia qhov nce ntawm 1000.
Pom zoo:
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