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ŠOTNER, R. POLÁK, L. JEŘÁBEK, J. LANGHAMMER, L. FREEBORN, T.
Originální název
Novel voltage Multiplier/Divider-based active square law detector for heartbeat measurement
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
This paper describes a novel active voltage detector that is capable of processing analog signals with levels from units of mV up to 250 mV. An advantage of the proposed circuit is that the relationship between output voltage and input level is not linear but quadratic, which increases the sensitivity when processing low-level signals. The presented solution has tuning parameters for correction or intentional shift of internal DC offset and electronic control of the output signal gain level. The application example presents detection of beats per minute (BPM) in the range of 6-300 BPM, which corresponds to a frequency range of 0.1-5 Hz. The advantage of the presented solution is that the output of the circuit is directly a digital signal compatible with TTL levels, so there is no need for any analog to digital converter to produce a digital signal for further processing.
Klíčová slova
Analog multiplier; Beats per minute (BPM); Detector; Heart rate; Sensing readout; Schmitt comparator; Variable gain amplifier
Autoři
ŠOTNER, R.; POLÁK, L.; JEŘÁBEK, J.; LANGHAMMER, L.; FREEBORN, T.
Vydáno
28. 2. 2024
Nakladatel
ELSEVIER SCI LTD
Místo
London
ISSN
0263-2241
Periodikum
MEASUREMENT, Journal of the International Measurement Confederation (IMEKO)
Ročník
226
Číslo
2
Stát
Spojené království Velké Británie a Severního Irska
Strany od
1
Strany do
12
Strany počet
URL
https://www.sciencedirect.com/science/article/pii/S0263224124000290?via%3Dihub
Plný text v Digitální knihovně
http://hdl.handle.net/11012/249344
BibTex
@article{BUT188348, author="Roman {Šotner} and Ladislav {Polák} and Jan {Jeřábek} and Lukáš {Langhammer} and Todd {Freeborn}", title="Novel voltage Multiplier/Divider-based active square law detector for heartbeat measurement", journal="MEASUREMENT, Journal of the International Measurement Confederation (IMEKO) ", year="2024", volume="226", number="2", pages="1--12", doi="10.1016/j.measurement.2024.114145", issn="0263-2241", url="https://www.sciencedirect.com/science/article/pii/S0263224124000290?via%3Dihub" }