Detail publikace

Readout for simple and precise analog acoustic impact initialization

ŠOTNER, R. POLÁK, L. JEŘÁBEK, J. LAHIRI, A. JAIKLA, W.

Originální název

Readout for simple and precise analog acoustic impact initialization

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

An economic concept of acoustic shock wave sensing readout system for simple computer processing is introduced in this work. Its application can be found in precise initialization of the stopwatch from the starter sound, handclap or gun in competitive sport races but also in many other places. The proposed device consists of several low-cost commercially available components and it is powered by a 9 V battery. The proposed device reliably reacts on incoming acoustic shock wave by generation of explicit impulse having controllable duration. It significantly overcomes basic implementations using only a microphone and amplifier (generating parasitic burst instead of defined and distinct impulse) or systems allowing a limited number of adjustable features (gain and/or threshold of the comparator-our concept offers the adjustment of gain, cut-off frequency, threshold level and time duration of active state). In comparison with standard methods, the proposed approach simplifies and makes sensing device less expensive and universal for any powder-based starting gun (without necessity to adapt starting gun). The proposed device, among others, has the following features: impulse duration can be controlled from hundreds of mu s up to 2.3 s, the gain range of linear part of processing from 6 to 40 dB and open-collector output compatible with 5 V TTL or 3.3 V CMOS logic. The initialization has been tested in the range from tens of centimeters up to four meters. In order to highlight the important spectral components, the spectral character of the signal can be optimally reduced by a low-pass filter. The quiescent power consumption of the designed simple analog circuit reaches 90 mW. Several use cases, response of the designed system on gunshot signature, talking, hand-clapping and hit on the sensing microphone, are studied and compared to each other. Simulation and experimental results confirm functionality of the realized system.

Klíčová slova

Acoustic shock wave; analog signal processing; gunshot initialization; single event activation; TTL/CMOS compatibility

Autoři

ŠOTNER, R.; POLÁK, L.; JEŘÁBEK, J.; LAHIRI, A.; JAIKLA, W.

Vydáno

8. 11. 2021

Nakladatel

Springer Nature

Místo

London, UK

ISSN

2045-2322

Periodikum

Scientific Reports

Ročník

11

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

16

Strany počet

16

URL

Plný text v Digitální knihovně

BibTex

@article{BUT173087,
  author="Roman {Šotner} and Ladislav {Polák} and Jan {Jeřábek} and Abhirup {Lahiri} and Winai {Jaikla}",
  title="Readout for simple and precise analog acoustic impact initialization",
  journal="Scientific Reports",
  year="2021",
  volume="11",
  number="1",
  pages="1--16",
  doi="10.1038/s41598-021-01090-z",
  issn="2045-2322",
  url="https://www.nature.com/articles/s41598-021-01090-z"
}