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Informacje o czasopiśmie
Format
Czasopismo
eISSN
1335-8871
Pierwsze wydanie
07 Mar 2008
Częstotliwość wydawania
6 razy w roku
Języki
Angielski

Wyszukiwanie

Tom 21 (2021): Zeszyt 2 (April 2021)

Informacje o czasopiśmie
Format
Czasopismo
eISSN
1335-8871
Pierwsze wydanie
07 Mar 2008
Częstotliwość wydawania
6 razy w roku
Języki
Angielski

Wyszukiwanie

3 Artykułów
Otwarty dostęp

Testing of Selected Accuracy Parameters for the Single Axis Positioner at the Automated Workplace

Data publikacji: 21 May 2021
Zakres stron: 47 - 54

Abstrakt

Abstract

Although some authors realized various measurement techniques and relevant standards in the experimental verification, the existing contributions still did not mention more complex automated workplaces with industrial robotic arm participation. To solve this, we provide a different view of the interconnection between individual devices (positioner, robot, etc.) controlled by third-party methods (Siemens products). Also, to obtain the necessary effectiveness, we tested and verified selected accuracy parameters for the participating device component (positioner). The proposed work tries to fulfill expectations for a precise welding technology (to ensure simultaneous movements of both the industrial robotic arm and positioner) to achieve higher quality and productivity. However, the components are from different manufacturers.

Słowa kluczowe

  • Positioner accuracy
  • automated workplace
  • welding operation
  • ISO 230-2
  • Siemens PLC
Otwarty dostęp

Usability of Wireless ECG Body Sensor for Cardiac Function Monitoring During Field Testing

Data publikacji: 21 May 2021
Zakres stron: 55 - 60

Abstrakt

Abstract

Wireless ECG body sensor Savvy is a feasible solution for reliable and accurate long-term heart rhythm monitoring. However, there were no studies dealing with usability of this sensor in field testing. Accordingly, the aim of the study is to evaluate the quality of the ECG signal measured with wearable wireless ECG body sensor when used in field test settings and to determine how different types of sensor fixation affects the quality of the ECG signal during sub-maximal and maximal running settings. Twenty-three participants, 10 females and 13 males, were included in the study (20.56 ± 1.19 years). All subjects performed shuttle run (SR), Cooper 2400 m (C), and 100 m sprint test (S), once wearing the sensor attached to self-adhesive skin electrodes, additionally fixed with self-adhesive tapes, and secondly with the sensor attached to Polar belt and strapped around the chest. Test outcomes were compared applying the Student t-test for dependent variables, or the non-parametric Wilcoxon test, depending on the results of the normality test. The results showed a significant difference (p<0.05) in the running speed that provides an assessable ECG signal between two different types of fixation in all three running tests – C, S, SR, as well as between the parameters “QRS detected as negative”, “correct software detection”, and “detected QRS” in the C and SR tests. Findings obtained in this study proved that if properly fixed, the ECG signal recorded with wireless ECG can be efficiently used for heart monitoring during physical activities in real setting and potentially could be used as additional tool in detection of cardiovascular diseases. In addition, fixation with Polar belt is more adequate for measurements made during physical activity in real setting compared to fixation with tape.

Słowa kluczowe

  • Telemetry
  • exercise testing
  • prevention
  • ECG
  • field tests
Otwarty dostęp

An Improved Method for Determination of Refractive Index of Dielectric Films from Reflectance Spectrum by Using the Generalized Morse Wavelet

Data publikacji: 21 May 2021
Zakres stron: 61 - 66

Abstrakt

Abstract

The Generalized Morse Wavelet (GMW) algorithm was adapted to determine the refractive index of dielectric film from the reflectance spectrum. A theoretically generated reflectance spectrum in the range of 300-1200 nm wavelength was analyzed by the Continuous Wavelet Transform (CWT) and the refractive index dispersion was obtained by the mentioned method. In addition, a noisy reflectance spectrum was analyzed to show the advantages of the CWT method. Refractive index dispersions calculated by the Morlet and the Paul wavelet were compared to GMW at the end of the study.

Słowa kluczowe

  • Dielectric film
  • refractive index
  • reflectance spectrum
  • continuous wavelet transform
  • generalized Morse wavelet
3 Artykułów
Otwarty dostęp

Testing of Selected Accuracy Parameters for the Single Axis Positioner at the Automated Workplace

Data publikacji: 21 May 2021
Zakres stron: 47 - 54

Abstrakt

Abstract

Although some authors realized various measurement techniques and relevant standards in the experimental verification, the existing contributions still did not mention more complex automated workplaces with industrial robotic arm participation. To solve this, we provide a different view of the interconnection between individual devices (positioner, robot, etc.) controlled by third-party methods (Siemens products). Also, to obtain the necessary effectiveness, we tested and verified selected accuracy parameters for the participating device component (positioner). The proposed work tries to fulfill expectations for a precise welding technology (to ensure simultaneous movements of both the industrial robotic arm and positioner) to achieve higher quality and productivity. However, the components are from different manufacturers.

Słowa kluczowe

  • Positioner accuracy
  • automated workplace
  • welding operation
  • ISO 230-2
  • Siemens PLC
Otwarty dostęp

Usability of Wireless ECG Body Sensor for Cardiac Function Monitoring During Field Testing

Data publikacji: 21 May 2021
Zakres stron: 55 - 60

Abstrakt

Abstract

Wireless ECG body sensor Savvy is a feasible solution for reliable and accurate long-term heart rhythm monitoring. However, there were no studies dealing with usability of this sensor in field testing. Accordingly, the aim of the study is to evaluate the quality of the ECG signal measured with wearable wireless ECG body sensor when used in field test settings and to determine how different types of sensor fixation affects the quality of the ECG signal during sub-maximal and maximal running settings. Twenty-three participants, 10 females and 13 males, were included in the study (20.56 ± 1.19 years). All subjects performed shuttle run (SR), Cooper 2400 m (C), and 100 m sprint test (S), once wearing the sensor attached to self-adhesive skin electrodes, additionally fixed with self-adhesive tapes, and secondly with the sensor attached to Polar belt and strapped around the chest. Test outcomes were compared applying the Student t-test for dependent variables, or the non-parametric Wilcoxon test, depending on the results of the normality test. The results showed a significant difference (p<0.05) in the running speed that provides an assessable ECG signal between two different types of fixation in all three running tests – C, S, SR, as well as between the parameters “QRS detected as negative”, “correct software detection”, and “detected QRS” in the C and SR tests. Findings obtained in this study proved that if properly fixed, the ECG signal recorded with wireless ECG can be efficiently used for heart monitoring during physical activities in real setting and potentially could be used as additional tool in detection of cardiovascular diseases. In addition, fixation with Polar belt is more adequate for measurements made during physical activity in real setting compared to fixation with tape.

Słowa kluczowe

  • Telemetry
  • exercise testing
  • prevention
  • ECG
  • field tests
Otwarty dostęp

An Improved Method for Determination of Refractive Index of Dielectric Films from Reflectance Spectrum by Using the Generalized Morse Wavelet

Data publikacji: 21 May 2021
Zakres stron: 61 - 66

Abstrakt

Abstract

The Generalized Morse Wavelet (GMW) algorithm was adapted to determine the refractive index of dielectric film from the reflectance spectrum. A theoretically generated reflectance spectrum in the range of 300-1200 nm wavelength was analyzed by the Continuous Wavelet Transform (CWT) and the refractive index dispersion was obtained by the mentioned method. In addition, a noisy reflectance spectrum was analyzed to show the advantages of the CWT method. Refractive index dispersions calculated by the Morlet and the Paul wavelet were compared to GMW at the end of the study.

Słowa kluczowe

  • Dielectric film
  • refractive index
  • reflectance spectrum
  • continuous wavelet transform
  • generalized Morse wavelet

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