Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Analysis of the Optimal Location of Wearable Biosensor Arrays for Individual Combat System Considering Both Monitoring Accuracy and Operational Robustness

모니터링 정확도와 운용 강건성을 고려한 개인전투체계용 착용형 생체센서 어레이의 최적 위치 분석

  • 하슬기 (인하대학교 기계공학과) ;
  • 박상헌 (인하대학교 기계공학과) ;
  • 임현철 (인하대학교 기계공학과) ;
  • 백승호 (LIG넥스원(주) C4I 연구소) ;
  • 김도경 (LIG넥스원(주) C4I 연구소) ;
  • 윤상희 (인하대학교 기계공학과)
  • Received : 2018.12.28
  • Accepted : 2019.03.29
  • Published : 2019.04.05
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Abstract

Monitoring for the physiological state of a solider is essential to the realization of individual combat system. Despite all efforts over the last decades, there is no report to point out the optimal location of the wearable biosensors considering both monitoring accuracy and operational robustness. In response, we quantitatively measure body temperature and heartrate from 34 body parts using 2 kinds of biosensor arrays, each of which consists of a thermocouple(TC) sensor and either a photoplethysmography(PPG) sensor or an electrocardiography(ECG) sensor. The optimal location is determined by scoring each body part in terms of signal intensity, convenience in use, placement durability, and activity impedance. The measurement leads to finding the optimal location of wearable biosensor arrays. Thumb and chest are identified as best body parts for TC/PPG sensors and TC/ECG sensors, respectively. The findings will contribute to the successful development of individual combat system.

Keywords

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Fig. 1. 34 body parts for measurement

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Fig. 2. Experimental apparatus and methods. (a) Biosensor array I. (b) Biosensor array Ⅱ. (c) Two-point discrimination. (d) Skin stretchability measurement

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Fig. 3. Monitoring accuracy measurement. (a) TC sensor. (b) PPG sensor. (c) ECG sensor

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Fig. 4. Body maps for monitoring accuracy. (a) TC sensor. (b) PPG sensor. (c) ECG sensor

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Fig. 5. Body maps for convenience in use. (a) Hand accessibility. (b) Tactile perception

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Fig. 6. Body maps for placement durability (a) Perspiration weight. (b) Skin stretchability

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Fig. 7. Body maps for activity impedance (a) Physical contact in motion (b) Inter-electrode length

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Fig. 8. Body maps for the distribution of position index, P. (a) Biosensor array I (TC+PPG). (b) Biosensor II (TC+ECG)

Table 1. Generalized formulas to calculate normalized indices for monitoring accuracy and operating robustness

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Table 2. Measurement data and point for 34 parts in human body

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