• 대한의용생체공학회:의공학회지
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• 제28권6호
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• pp.721-726
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• 2007

The study relates to achievement and analysis of 3-dimensional spatial pulse wave archived by a spatially arterial pulse diagnostic apparatus (SAPDA), wherein a pulse sensing part array consists of multiple hall devices and is located over a skin contacting part which consists of a magnetic material. When a radially arterial pulse is transferred to the magnetic material, which is contacted skin that results in changes in a magnetic field of the lower part of the pulse sensing part array, the changes in a magnetic field can be detected by the commercial Hall semiconductor device of the pulse sensing part array. Finally, according to development of SAPDA, the 3-dimensionally arterial pulse waveform can be measured noninvasively by detecting the changes of the magnetic field.

• 융합신호처리학회논문지
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• 제9권2호
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• pp.112-120
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• 2008

본 연구는 전통적인 수지(手指)를 이용한 진맥환경 하에서 객관성 있는 정량적 정보를 수집하기 위해 한의학 진단법에 입각한 맥상(脈象)과 병상(病象)진단을 위한 시스템을 개발하는데 그 목적이 있다. 이를 위하여 우선, 최적합한 진단정보를 취득하기 위한 진맥기로서 골무형태의 센서유닛을 제안하고, 이것을 인지, 중지, 약지에 장착하여 전통적인 방법으로 척관촌(尺關寸)점의 맥압파를 측정하는 방법을 제시하였다. 다음으로, 이 진맥기를 사용하여 한의 진단학에서 정의하고 있는 부침지삭허실(浮沈遲數虛實)맥으로 표현되는 육조맥(六祖脈)과 홍(洪), 유(濡), 혁(革), 산(散)맥 등을 포함하는 28맥을 객관적으로 인식할 수 있음을 해석적으로 밝혔다. 끝으로, 이 진맥기로서 측정한 압맥파로부터 맥상 진단에 기초가 되는 주요 파라미터를 추출하는 방법을 제시했다.

• 한방안이비인후피부과학회지
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• 제21권2호
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• pp.112-119
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• 2008

Objective : The quantification of pulse diagnosis is an important subject utilizing as a modernization of Oriental medical diagnosis and as a basic data for collaborative access between East and West Medicine. This study was to observe the tendency of pulse diagnosis in atopic dermatitis patients as measured by pulse diagnostic apparatus. Methods : We did pulse diagnostic test about 11 new outpatients who had visited the department of ophthalmology, otolaryngology, dermatology in Kyunghee oriental medical center from March 1, 2007 to October 31, 2007 and had atopic dermatitis. Results : The results were as follows. 1. Among the 11 outpatients, the total number of male patients were 5 and female patients were 6, and the age distribution, the most frequently visited age groups were 10-19 years old and 20-29 years old(each 4 patients). 2. The most common period of onset to first examination were 3 years${\leq}$ (7 patients). 3. There were 8 patients who had emphasized T-wave. 4. There were 7 patients who had repeated pulse wave pattern. Conclusion : In 11 cases who had atopic dermatitis, 8 patients had emphasized T-wave and 7 patients had repeated pulse wave pattern.

• 한국자기학회지
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• 제16권4호
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• pp.216-220
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• 2006

10개의 다중 홀(Hall)소자를 이용하여 요골동맥에 놓여진 영구자석의 위치 변화에 따른 전압의 변화를 전기적 신호로 얻었다.전기적 신호는 맥의 파형 신호를 의미하며 이들을 다시 회로의 하드웨어를 통해 신호들을 미분하여 자장의 변화 신호만 얻었다.소프트웨어를 통해 위치 변화에 따른 자장 변화의 크기에 따라 그 형태를 3차원 영상을 얻어 착용형 맥진기로서의 개발 가능성을 보여주었다.

• 한국자기학회지
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• 제15권6호
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• pp.307-310
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• 2005

요골동맥의 운동에 대한 공간적 맥진파형 특징을 얻기 위해 2차원 배열 자기터널접합(magnetic tunnel junction; MTJ) 센서를 이용하여 공간 맥진파형 진단장치(spatial pulse diagnostic apparatus; SPDA)를 설계하였다. 자극배열의 위치변동에 대한자장 분포의 변화는 2차원 자기장 유한요소해석 소프트웨어(finite element method magnetics; FEMM)를 사용하여 모의실험을 하였다. 그 결과 평행한 자극배열에서 높은 감도와 균일한 자기장 분포를 얻을 수 있다. 또한 자석배열의 공간 변위 변화는 MTJ 센서의 출력신호 변화와 비례하였다.

• 사상체질의학회지
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• 제23권2호
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• pp.194-207
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• 2011

1. Objectives: This study is about a development of Sasang constitutional classification algorithm using facial information. 2. Methods: We analysed the datum of middle aged (20~48) women collected by multi-center researchers in 2007. And this study analysed the data of the measurement of the face by 3D-AFRA (3-Dimensional Automatic Face Recognition Apparatus) and the items of impression by SDQ. We used multiple comparison, exploratory discriminant analysis and clinical decision to select optimal 3D facial variables which will be input in discriminant analysis model. And we used univariate F values and stepwise discriminant function analysis to choose best impression variables. 3. Results and Conclusions: In this study, derived discriminant function's explanation power was 39% in female group. Diagnostic accuracy rate was 66.0% in female group. And in test sample, Sasang constitutional diagnostic accuracy rate was 56.9%. In this process we could help improve the objectification of Sasang constitution diagnosis.

• Journal of Magnetics
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• 제16권4호
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• pp.449-452
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• 2011

A wrist wearable cuffless pulsimeter with a portable and small size apparatus using Hall effect is fabricated. The analysis of the pulse wave measured by the testing product of pulsimeter is done to measure the pulse rate and blood pressure. The blood pressure obtained by the puslimeter is compared with the practical values measured by electronic or mercury liquid blood pressure meters. The detail analysis of a pulse wave measured by a wrist wearable cuffless pulsimeter detecting the changes of the magnetic field can be used to develop a new diagnostic algorithm of blood pressure applying for oriental medical apparatus.

• 대한한의학회지
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• 제16권1호통권29호
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• pp.499-504
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• 1995

Recently, there are deep and much concerns about the objective assessment of diagnosis in Oriental Medicine. Among them, pulse diagnostics is used for the quantitative device of diagnosis. The objective research of pulse diagnosis were mainly conducted by pulse wave. So it is important to gain multi-information for the quantification of pulse diagnosis. We report the development of pulse diagnostic apparatus enable to gain the multi-information, detect the pressure pulse wave in conku(寸口) area and obtain the gradient curve and original pulse wave simultaneously, and consider the pulse wave with the traditional pulse diagnosis at the same time.

• 대한예방한의학회지
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• 제4권1호
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• pp.32-50
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• 2000

On the process of research in the plan on oriental medical participation in the industrial health sponsored by BK21 project, we carried out the oriental medical health examination program for workers during former half-year We reached the conclusion as follows, 1. The oriental medical health examination program is contents and formalities that should be determined by present industrial health system, based on the oriental medical system and scholastic character, and included probability of the western and oriental medical cooperation. 2. The oriental medical health examination program can promote capability of individual health management and productive power of workers, and it is capable to manage on the self-conscious symptoms and macroschophically approach to their environment 3. The oriental medical health examination program that we have developed, is flow as questionare, understanding of working environment, information of result and later management. It is composed of three fields as follow , first, use of pulse diagnostic apparatus, understanding of the health promotion life style, and diagnosis of the oriental medical doctor, second, analysis of constitution, third, photographing for understanding of the musculoskeletal disorders, questionare for musculoskeletal self-conscious symptoms, and diagnosis of oriental medical doctor. 4. The oriental medical health examination program that we have developed, progressive from the view point of health, makes the oriental medical doctor's roll more important. It is the first trial at the western and oriental medical cooperation and characterized by excellence about musouloskeletal disorders. But it need to be improved in aspects of time and specialist on the health examination, diagnostic apparatus, control of examinant and later management. So we think that it needs research on the employment of health examination specialist, establishment of later management system, development of significantly diagnosable standard and assessable form on the health examination, and contents of health examination on the western and oriental medical cooperation.

• 대한한방내과학회지
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• 제26권2호
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• pp.390-397
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• 2005

Background & Object: The aim of this study was to investigate the association of degree of fatigue and gastric motility, measured by EGG, with skin sympathetic tone or cardiovascular reactivity in patients with functional dyspepsia. Methods: Subjects were 56 patients with Functional dyspepsia and eight healthy people. Degree of fatigue was assessed by questionnaires consisting of subjective complaints of fatigue. Skin sympathetic tone was measured by Ryodoraku Score and Cardiovascular Reactivity was checked by Pulse diagnostic apparatus. Gastric motility was estimated by EGG. First, all patients were divided into two groups by Ryodoraku Score $40{\mu}A$(below and above). Second, they were subdivided into two groups by Cardiovascular Reactivity(decreased and increased or not decreased). Estimates were made on the extent differences of degree of fatigue or state of gastric motility in each group. Results: 1. Fatigue scores was significantly higher in females and in the Ryodoraku-Score-below-$40{\mu}A$ group. It was higher in the decreased cardiovascular reactivity group than the increased group, but to no significanct extent. Also, gastric motility was better in the Ryodoraku-Score-above-$40{\mu}A$, group than in the below group. Conclusions: These results suggest that degree of fatigue and gastric motility are associated with skin sympathetic tone, but not associated with cardiovascular reactivity, and that $40{\mu}A$ is a useful cutoff point in Ryodoraku Score for assessing degree of fatigue in functional dyspepsia patients.