• International journal of advanced smart convergence
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• 제11권3호
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• pp.56-63
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• 2022

Cyber-physical systems (CPSs) can solve real problems by utilizing closely connected resources in the cyber world. Most problems arise because the physical world is uncertain and unpredictable. To address this uncertainty, information pouring from numerous devices must be collected in real-time, and each interconnected device must share the information. At this time, CPS must meet timing-related techniques and strict timing constraints that can deliver accurate information within predefined deadlines in order to interact closely beyond simply connecting the cyber and physical worlds. Timing errors in safety-critical systems, such as automobiles, aviation, and medical systems, can lead to catastrophic disasters. In this paper, we classify timing problems into two types: real-time delay and synchronization problems. The results of this study can be used in the entire process of CPS system design, implementation, operation, verification, and maintenance. As a result, it can contribute to securing the safety and reliability of CPS.

• Journal of Computing Science and Engineering
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• 제10권3호
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• pp.75-84
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• 2016

Medical cyber-physical systems (MCPS) integrate sensors, actuators, and software to improve patient safety and quality of healthcare. These systems introduce major challenges to safety analysis because the patient's physiology is complex, nonlinear, unobservable, and uncertain. To cope with the challenge that unidentified physiological parameters may exhibit short-term variances in certain clinical scenarios, we propose a novel run-time predictive safety monitoring technique that leverages a maximal model coupled with online training of a computational virtual subject (CVS) set. The proposed monitor predicts safety-critical events at run-time using only clinically available measurements. We apply the technique to a surgical glucose control case study. Evaluation on retrospective real clinical data shows that the algorithm achieves 96% sensitivity with a low average false alarm rate of 0.5 false alarm per surgery.

• 대한의용생체공학회:의공학회지
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• 제30권1호
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• pp.41-48
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• 2009

In this paper, we present the diagnosis system for swallowing disorder. There are some types of diagnosis device for swallowing disorder, for example, the video fluoroscopy, the nuclear medicine inspection, the endoscopy, EMG and motion analysis. But these systems need heavy devices or have dangerous nuclear exposure, so are uncomfortable for handicapped person. Our system has advantages of simplicity, accuracy and quantitative analysis. In addition to the diagnosis aspect, this system can be used to biofeedback treatment.

• 한국빅데이터학회지
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• 제6권2호
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• pp.99-108
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• 2021

최근, 예상치 못하고 지능적인 보다 고도화된 사이버 의료 위협 공격이 증가하고 있는 추세이다. 하지만 다양한 패턴의 사이버 의료 위협 공격 대응에 있어, 물리적인 차단과 의료기기 교체와 같은 규칙 기반 보안방법론은 인력 부족, 고가의 비용 부담 등의 한계를 지닌다. 이를 해결하기 위한 방안으로 최근 의료계에서도 인공지능 기술에 주목하고 있다. 인공지능 기술은 기존의 규칙 기반의 보안 프로그램과는 달리 과거의 이상행태를 스스로 학습하여 보안 위협 감지 및 예측을 가능케 하는 기술이다. 본 연구에서는 의료기관 통합의료정보시스템 내 의료정보 데이터를 수집 및 학습하여 AI 기반 네트워킹 행동 적응형 정보 플랫폼 개발 연구 방법론에 대한 소개를 포함한다. 이를 통해 규칙 기반의 보안 프로그램의 기술적 제반사항 소개와 제약 사항 대비 의료정보분야에서의 인공지능 기술을 활성화하기 위한 전략에 대해 논의한다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제14권4호
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• pp.268-275
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• 2014

In future, hospitals are expected to automatically issue remote transcriptions. Many general hospitals are planning to encrypt their medical database to secure personal information as mandated by law. The electronic medical record system, picture archiving communication system, and the clinical data warehouse, amongst others, are the preferred targets for which stronger security is planned. In the near future, medical systems can be assumed to be automated and connected to remote locations, such as rural areas, and islands. Connecting patients who are in remote locations to medical complexes that are usually based in larger cities requires not only automatic processing, but also a certain amount of security in terms of medical data that is of a sensitive and critical nature. Unauthorized access to patients' transcription data could result in the data being modified, with possible lethal results. Hence, personal and sensitive data on telemedicine and medical information systems should be encrypted to protect patients from these risks. Login passwords, personal identification information, and biological information should similarly be protected in a systematic way. This paper proposes the use of electronic acupuncture with a built-in multi-pad, which has the advantage of being able to establish a patient's physical condition, while simultaneously treating the patient with acupuncture. This system implements a sensing pad, amplifier, a small signal drive circuit, and a digital signal processing system, while the use of a built-in fuzzy technique and a control algorithm have been proposed for performing analyses.

• 한국통신학회논문지
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• 제37권8C호
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• pp.690-696
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• 2012

최근 원격진료의 필요성과 사용자의 서비스 요구사항이 증가함에 따라 보다 편리한 원격진료 서비스 제공 방법에 대한 연구가 다양한 분야에서 진행 중이다. 본 논문에서는 기존의 원격진료시스템과는 다르게 무선통신센서를 이용한 CPS(Cyber Physical System)기반의 음성통신과 생체정보시스템을 연동하여 거동이 불편한 고령자는 편리하게 무선으로 정보를 송수신하고, 원격지의 의료인을 위해 전달 받은 생체정보와 음성대화를 통해 진단의 정확도를 높일 수 있으며, 고령인의 건강정보를 선택적으로 저장하고 추후 의료인이 조회하여 상시 건강관리가 가능한 통합원격의료서비스를 제안한다. 본 연구를 통해 고령사회로 진입한 우리나라 상황에 맞는 고령친화적인 원격진료시스템을 구축하여 실버타운에 거주하는 고령인들을 위한 고령친화적인 의료서비스를 제공할 수 있을 것이다.

• 한국통신학회논문지
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• 제39C권10호
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• pp.920-929
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• 2014

최근 통신, 교통, 의료, 산업시설 등에서 수요가 급증하고 있는 임베디드 시스템은 단순한 임베디드 시스템이 아닌 다양한 임베디드 기기의 동작이 통신을 통해 관찰되고 제어되는 Cyber Physical System(CPS)으로 확장되었다. 또한 구글 글래스, 삼성 갤럭시 기어, 소니 스마트 워치 등의 웨어러블 기기를 활용한 사물인터넷(IoT) 기술활용에 대한 관심이 증가하고 있다. 이러한 상황에서 삼성전자의 스마트홈(Smart Home)과 LG전자의 홈챗(Home Chat)이 잇따라 출시되고 있다. 하지만 이러한 서비스들은 스마트폰과 가전기기간에만 통신이 가능하며 그 이외의 단말과는 통신이 불가능하며 모든 정보는 상업용 포털이 운영하는 글로벌 메시징 서버를 통하여 통신이 이루어진다는 단점이 있다. 본 논문에서는 앞서 언급한 단점을 보완하기 위해 단위공간 기반 실내위치인지망 구축하는 구조를 제안한다. 이를 통해 기기들 및 개개인에 대한 정보가 외부로 유출되는 것을 방지하면서 사물인터넷 채팅을 통해 망 내에 존재하는 모든 단말과의 선택적 통신이 가능하다. 또한 좀 더 범용적인 기기 제어가 가능해지고 개인정보의 외부유출 방지가 가능하다.

• 한국직업건강간호학회지
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• 제14권1호
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• pp.56-70
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• 2005

Objectives: The purpose of this study is to develop a linking model between industrial injury insurance organs and local organizations providing social welfare health services, for the activation of medical rehabilitation services for industrial injury patients. Method: Research design for this study was a multi-step research through literature review, field research, and group interviews with persons in charge, to compare local society-oriented medical rehabilitation programs. The term of researches Sep.1 ~ Nov. 30, 2004. Results: 1. Home nurses from Workers Accident Medical Corporation have been taken to be adequate to case managers, who link industrial accident insurance institutions to local society services for the activation of medical rehabilitation services for industrial injury patients. They have been chosen for case managers because they have richer understanding and experiences of objects of industrial accidents than any other specialists, and because they have proved to be able to provide direct home services as a specialist. We have established the center for case management affairs within the workers accident general hospital, organized the committee for case management with doctors in charge, doctors in rehabilitation, rehabilitation consultants, social welfare workers, physical therapists, and nurses, determined objects of case managements from those of long-term recuperation, and constructed a course of case management containing from case management plans to evaluation. 2. We have made files of community resources, and organized the council of industrial accident administration to have it in charge of the adjustment and linking of services in case management affairs. 3. Because there are inequality of community resources between areas, differences in experiences in and bases for linking, and disparity of core organizations with active linking in the system of linking between public and civil sectors, we have taken a system of linking between parallel organs to be the core. In our linking model, workers accident general hospital, hospitals designated for industrial injury, and rehabilitation hospitals are linked in parallel, inadequate long-term recuperation managers are trusted to an workers accident medical corporations through examination by the examination committee in Korea Labor Welfare Corporation, and are dealt with by the committee for case management. Of the hospitals designated for industrial accidents, those running a home caring center provide home caring services for the handicapped at home from industrial injury. 4. Workers Accident Medical Corporation take part in medical rehabilitation, and Korea Labor Welfare Corporation in vocational/social rehabilitation. Furthermore, in the model, the latter should construct a system for job opportunities through Internet portals and provide cyber vocational consultation and introduction. Conclusion: Improvement of systems is needed to apply the linking model to practical affairs. Because this model is centered for practical affairs, it should be put under the analysis of effects, and evaluation of its adequacy to practical application, and its effects and efficiency through experimental running in the 8 workers accident general hospital in Korea.