• Journal of the Korea Society of Computer and Information
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• v.27 no.2
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• pp.163-170
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• 2022

Currently, as the number of families living with companion animals increases, the demand for information about the health status of companion animals has increased. As the demand for this increases, there is a need for a method to measure respiration and pulse in companion animals. Considering the characteristics of hairy companion animals, we want to measure respiration and pulse signals using BCG, which is different from adsorption ECG. Since this BCG method is made by mixing respiration and pulse signals into one signal, it is necessary to separate the respiration signal waveform and the pulse signal waveform from one signal waveform. In this paper, a wearable device for BCG measurement was implemented to measure the signal, and a method of separating the signal input from the BCG wearable device into a respiration signal and a pulse signal was proposed.

• Journal of Korean Society of Forest Science
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• v.85 no.3
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• pp.396-408
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• 1996

The purposes of this study were to standardise the forest working system to design the intensity of working system in felling operation of the thinning forest in our country as well as to contrive the improvement of working method and the increase of productivity. For the purpose of investigating these, element working was classified by felling operation in softwood thinning forest, and a pulse rate were measured and analyzed. The results were as follow : 1. From the analysis of the pulse frequence measurment, the average pulse showed 108 pulse per minute for worker A in the total of pure working time, 130 pulse per minutes for worker B, 119 pulse per minute for worker C and 125 pulse per minute for worker D, respectively. 2. From the results of the pulse frequence analysis according to element working classification, the highest pulse frequence represented 115 pulse per minute for worker A in the circumference, 131 pulse per minute for worker B in the movement, 122 pulse per minute for worker C in the limbing operation and 128 pulse per minute for work D in hang-up. 3. If the original pulse frequence was 100% for workers, the working intensity showed as follow : worker A was 160%(original pulse frequence was 61=100%) for the total of the working intensity and 188% for the circumference among element working. Worker B was 220%(original pulse frequence was 57=100%) for the total of the working intensity and 229 for movement among element working. Worker C was 159%(original pulse frequence was 73=100%) for the total of the working intensity and 168% for limbing operation among the element working. Worker D was 156%(original pulse frequence was 70=100%) for the total of working intensity and 182% for hang-up among element working. 4. At the limit point of Labor performance rating, showing the total of working intensity, overtime pulse rate per minute was 30 for worker A, 207 for worker B, 14 for worker C and 67 for worker D. Worker B was highest in working intensity, and got physically a big load.

• Journal of Yeungnam Medical Science
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• v.3 no.1
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• pp.81-85
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• 1986

Observation of changing pattern of blood pressure and pulse rate of enflurane anesthesia for 200 cases operations, performed during the past 4 years(1983~1986) in Yeungnam University Hospital have been evaluated clinically. In order to observe the influence of enflurane upon the blood pressure and pulse rate during general anesthesia, the authors prepared a formula, expressing changing of blood pressure and pulse rate by time series and analyzed the types and distribution pattern in the experiment. The results obtained were as follows : 1. Blood pressure and pulse rate were increased at the time of intubation. 2. Generally, blood pressure and pulse rate were increased at the time of intubation and then stabilized withing 20 minutes. 3. Most common patterns were identified, ADEE type was 73~74%, Which is most common type and AEEE type was about 40%.

• Journal of Korean Academy of Nursing
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• v.26 no.3
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• pp.623-631
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• 1996

간호사가 사용하는 중재로서 관심을 표현하는 방법이며 의사소통의 통로인 접촉의 한 형태로서의 마사지가 이완과 안녕감을 증진시킬 수 있는지를 알아보기 위해 간편하면서도 장소에 거의 구애를 받지 않는 손마사지를 미국 미네소타주에 살고 있는 22명의 한국 이민노인에게 시행하였다. 자료수집 기간은 1992년 12월부터 1993년 6월까지 약 6개월이 소요되었다. 편의표출방법으로 대상자를 선정한 원시실험연구설계로, 독립 변수로 손마사지를 사용하였고 이완행동, 수축기혈압, 이완기 혈압, 맥박수로 측정한 이완의 정도와 안녕감을 종속변수로 사용하였다. 손마사지는 Snyder등이 개발한 방법으로 한 손에 2분 30초씩 5분이 소요되는데 이틀에 한번씩 6회 실시하였다. 안녕 감을 측정하는 Cantril ladder는 10개의 사다리로 된 도구로 첫번 마사지전, 세번째 마사지후, 그리고 여섯번째 마사지후에 대상자로 하여금 직접 사다리 점수를 매기도록 하였다. Luiselli등이 개발한 이완행동 측정도구로 각 마사지 전후에 대상자의 이완정도를 관찰하였고, 마사지 전후에 혈압과 맥박수를 측정하였다. 자료는 paired t-test와 ANOVA, repeated measures ANOVA로 분석하였다. 연구의 결과는 다음과 같다. 1. 1-6회 동안의 마사지전의 이완점수의 평균값과 1-6회 동안의 마사지후의 이완점수의 평균값을 비교한 결과 마사지후에 이완의 정도가 유의하게 증가하였고 (t=10.70, p=.000), repeated measures ANOVA로 검증한 시간에 따른 효과도 유의한 차이를 보였다. 2. 1-6회 동안의 마사지전의 수축기 혈압의 평균값과 1-6회 동안의 마사지후의 수축기 혈압의 평균값을 비교한 결과 마사지후에 수축기 혈압이 유의하게 저하되었 다(t=6.09, p=.000). 3. 1-6회 동안의 마사지전의 이완기 혈압의 평균값과 1-6회 동안의 마사지후의 이완기 혈압의 평균값을 비교한 결과 유의한 차이를 보이지 않았다(t=.27, p=.793). 4. 1-6회 동안의 마사지전의 맥박수의 평균값과 1-6회 동안의 마사지후의 맥박수의 평균값을 비교한 결과 마사지후의 맥박수가 유의하게 감소하였다. (t=4.45, p=.001). 5. Cantril 안녕감의 점수는 유의한 차이를 보이지 않았다(F=2.42, p=1.01)

• Journal of Naturopathy
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• v.11 no.2
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• pp.116-122
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• 2022

Background: Studies on the effect of abdominal or thoracic breathing therapy on sleep or blood oxygen concentration are still scarce. Purpose: This study was to examine the effect on blood oxygen saturation and pulse variability, changes in the severity of insomnia, changes in wakefulness before sleep, and dysfunctional beliefs and attitudes toward the Korean version of sleep in women in their 50s after healing with abdominal breathing and thoracic breathing. We investigated the effect. Methods: Subjects were investigated before and after the change of breathing (breathing) therapy for 12 weeks, 3 times a week, and 36 breaths perweek. Results: It wa evaluated respiratory healing as having no significance in the pulse rate change. However, oxygen saturation was significant in the experimental group, increasing to 93.60 SpO₂% before the respiratory rally and 96.5 SpO₂% after respiratory recovery (p < .002). In addition, the insomnia severity scale and dysfunctional beliefs about sleep significantly decreased after respiratory rally than before (p < .000). Conclusions: It evaluated that respiratory therapy for the subjects is beneficial to health as it is effective for insomnia, pulse, and oxygen saturation.

• Journal of Naturopathy
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• v.10 no.1
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• pp.33-41
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• 2021

Purposes: We studied whether forest bathing is effective in improving the stress of the human body. Therefore, we investigated changes in pulse rate, stress index, and autonomic nervous system after 2 hours of forest bathing on Jeju Samdasu Forest Methods : The study was conducted before and after forest bathing through heart rate variability and questionnaire. Results: After forest bathing, the average pulse rate of the experimental group was significantly increased. The stress index significantly decreased in the post-test in the experimental group. The cumulative stress, sympathetic activity (LF), parasympathetic activity (HF) change, and LF/HF ratio were slightly different from those of post-test in the experimental group, but were not statistically significant. In the survey of job stress average index and state characteristic anxiety index through questionnaire, it decreased significantly after forest bathing (p<.001). Conclusions: The Samdasu forest bathing has been proven effective in enhancing pulse and reducing stress, so it is evaluated that forest bathing is effective in promoting health.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2016.06a
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• pp.278-279
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• 2016

최근 웨어러블 장치의 개발로 인하여 다양하게 생체 신호를 측정하는 방법이 많아지고 있다. 이와 관련하여 대표적으로 측정하는 신호가 PPG(plethysmography) 신호이다. PPG 신호를 이용하여 맥박수, 혈박출량, SPo2 등의 값들을 추정할 수 있다. 그러나 웨어러블 장치의 특성상 동적잡음이 많이 발생하게 된다. 동적잡음을 제거하기 위한 방법들은 가속도 센서를 사용하는 방법, 칼만필터(Kalman filter)를 이용하는 방법 등 다양한 방법들이 존재한다. 그러나 여전히 범용으로 사용하기에는 한계가 있다. 본 논문은 Neural Network를 사용하여 개인별로 PPG 신호를 학습하여 PPG 신호의 이상 유무를 판단하고 이전 신호의 평균 맥박수를 사용하여 효과적으로 PPG 신호의 정확한 맥박수를 검출하는 알고리듬을 제안한다.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1231-1232
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• 2015

본 연구는 정확한 혈압과 맥박을 측정하기 위해 L-C 공진을 이용한 압력센서 및 이를 측정하기 위한 측정시스템의 개발에 대한 연구로 기존의 인위적인 압력을 가하거나 침습형태가 아닌 인체 요골동맥에 패치형태로 센서를 부착하여 심장운동에 따른 요골동맥의 기계적 변화를 센서 내부의 커패시턴스 및 인덕턴스의 변화로 인한 공진주파수의 변화로 검출하였으며, 센서의 코일은 휴대용 무선 측정 시스템의 안테나와 Inductive Coupling을 이루어 무선전력전송이 이루어지며 센서를 통해 측정된 혈압 및 맥박은 LCD 디스플레이 및 오실로스코프를 통해 수치화 및 영상화 하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.326-330
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• 2012

In 2011, There were about 25,000 people died because of heart disease. The aim of this paper is to design a heart attack situation monitoring and spreading system for patients. Wearable computer with a sensor is used to monitor heart rate. Heart rate is transffered to smartphone with bluetooth. After analyzing heart rate, smartphone spread out the emergency situation by various service including emergency call, SNS and SMS.

• 한국IT서비스학회:학술대회논문집
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• 2009.11a
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• pp.405-408
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• 2009

본 논문에서는 운전자의 감성 정보를 이용하여 자동차를 제어하는 새로운 개념의 바이오 멀티미디어 오토 컨트롤시스템을 제안한다. 인간의 감성을 나타내는 생체신호로는 맥박, 혈압, 긴장도 등등이 될 수 있는데, 본 논문에서는 생체신호 중 하나인 적외선 맥박신호를 적용해 바이오 멀티미디어 오토 컨트롤시스템을 구성 하였다. 본 논문은 운전자의 맥박 정보를 자동차로 전송하여, 긴급 시에 자동으로 자동차를 제어하는 시스템 구현에 관한 연구이다.