Detail publikačního výsledku

Novel voltage Multiplier/Divider-based active square law detector for heartbeat measurement

ŠOTNER, R.; POLÁK, L.; JEŘÁBEK, J.; LANGHAMMER, L.; FREEBORN, T.

Originální název

Novel voltage Multiplier/Divider-based active square law detector for heartbeat measurement

Anglický název

Novel voltage Multiplier/Divider-based active square law detector for heartbeat measurement

Druh

Článek WoS

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.

Anglický 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

Klíčová slova v angličtině

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.

Rok RIV

2025

Vydáno

28.02.2024

Nakladatel

ELSEVIER SCI LTD

Místo

London

ISSN

0263-2241

Periodikum

MEASUREMENT

Svazek

226

Číslo

2

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

12

Strany počet

12

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",
  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"
}

Dokumenty

1-s2.0-S0263224124000290-main
detector_BPM_v_knihovna
j.measurement.2024.114145_accepted