• Journal of Korea Multimedia Society
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• v.18 no.6
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• pp.742-752
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• 2015

The communications through the power lines are called as the PLC and this is a common name for the communication modes for the information delivery. This technology transmits the data through the power lines on which the information is stored with the form of high frequency signal. The characteristic of the frequency signal is that the signal can be separated from the power line through exclusive power line modem and transmitted to the terminal devices. In this paper, 'In-home Headcount' checking algorithm using Wi-Fi and taking above mentioned advantages is proposed, and the basic Technology for such Solitary Senior Citizen's Lonely Death monitoring system has been designed and implemented. The comparative analysis has been conducted in this paper with the test-operated and test bed-completed 'Hyosimi 119 Safety-Welfare System' which is still being tested since 2008. With the 'In-home Headcount Checking Algorithm', Wi-Fi connection/disconnection status and SSIDs of relevant Wi-Fis will be checked. We expect that our proposed method will become as the basic Technology which can prevent lonely deaths of elderly people living alone. Since the PLC technology can be normally implement all the functions used on internet anticipate that the technology could be applied to many areas to construct a new form of communication network.

• Journal of Korean Academy of Rural Health Nursing
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• v.2 no.1
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• pp.24-32
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• 2007

Purpose: This study was done to provide statistical data for developing client-needs based welfare services in community welfare facilities. Method: The participants were 270 senior citizens, who visited a community welfare center in Gyunggi province, during the month of October 2005. They were asked to answer a structured questionnaire. Descriptive statistics, $X^2$ test and Fisher's exact test were used to analyze the data from 221 of the elders. Results: 1. More than 50% of the respondents were women aged between 60 and 75, who had education levels above high school and who lived in apartments. Among the respondents, 54.3% lived separately from their children. 2. 70.0% of the respondents considered their health status as "good", even though they had more than one disease. Also 41% of the respondents were supported by their children, and 76.8% wanted jobs. 3. The respondents pointed out several programs such as languages, computer, singing class, physical activities (dances, billiards, Tai-chi and table tennis), needed to be included in the welfare center programs. Conclusions: Elders aged 60-75, educated above high school, living in an apartments, live alone or with spouse, and having frequent contact with children, were the most frequent utilizers of the welfare center. They want the welfare center programs in variety, including languages, computer, singing class, and physical activities.

• Journal of Internet Computing and Services
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• v.20 no.6
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• pp.137-142
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• 2019

This paper Various services exist to detect and monitor abnormal event. However, most services focus on fires and gas leaks. so It is impossible to prevent and respond to emergency situations for the elderly and severely disabled people living alone. In this study, AI model is designed and compared to detect abnormal event of heart rate signal which is considered to be the most important among various bio signals. Specifically, electrocardiogram (ECG) data is collected using Physionet's MIT-BIH Arrhythmia Database, an open medical data. The collected data is transformed in different ways. We then compare the trained AI model with the modified and ECG data.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.8
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• pp.2787-2800
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• 2022

The aging society increases emergency situations of the elderly living alone and a variety of social crimes. In order to prevent them, techniques to detect emergency situations through voice are actively researched. This study proposes CutPaste-based anomaly detection model using multi-scale feature extraction in time series streaming data. In the proposed method, an audio file is converted into a spectrogram. In this way, it is possible to use an algorithm for image data, such as CNN. After that, mutli-scale feature extraction is applied. Three images drawn from Adaptive Pooling layer that has different-sized kernels are merged. In consideration of various types of anomaly, including point anomaly, contextual anomaly, and collective anomaly, the limitations of a conventional anomaly model are improved. Finally, CutPaste-based anomaly detection is conducted. Since the model is trained through self-supervised learning, it is possible to detect a diversity of emergency situations as anomaly without labeling. Therefore, the proposed model overcomes the limitations of a conventional model that classifies only labelled emergency situations. Also, the proposed model is evaluated to have better performance than a conventional anomaly detection model.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.461-462
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• 2022

최근 지속적인 출산율의 감소와 평균수명의 증가로 인하여, 대한민국의 초고령 사회는 예상보다 훨씬 빠르게 증가하고 있다. 핵가족 형태가 보편화되며 1인 가구도 함께 늘고 있어서 홀로 사는 노인의 수 역시 증가하는 추세이다. 주거 공간에서 낙상사고와 같은 고령화 안전사고가 많이 발생하고 있다. 혼자 사는 독거노인들의 경우 사고 발생 즉시 대처가 가능한 보호자가 없다는 문제점이 있다. 본 논문에서는 MediaPipe를 이용한 낙상사고 감지 시스템을 개발한다. 먼저, 이 시스템은 MediaPipe를 이용해서 카메라를 통해 실시간으로 수신된 영상에서 사람을 인식하고, 자세 유형 분석을 통해 낙상사고 발생 여부를 판별하여 애플리케이션을 통해 보호자에게 현장 상황을 알려주는 시스템이다. 낙상사고가 발생했다면 보호자용 애플리케이션을 통해 사고 발생 알림 및 현장 사진을 보여준다. 이와 같은 기술을 활용하여 응급상황에 처한 노인을 빠르게 구조하며 독거노인의 생활안전사고 문제를 해결하는 데에 기여하고자 한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.10a
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• pp.106-107
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• 2021

This paper implements a door lock using PIR sensor based on Arduino. When the PIR sensor detects movement, the door lock device is activated and RFID tags can be used. This door rock can prevent lonely death by detecting whether the resident is in or out, and it also has hygienic advantage because it unlocks without contact by using RFID. In addition, as door locks are frequently used in everyday life, the above-mentioned implementation can also increase participation in hands-on lectures.

• Proceedings of the Korean Society of Computer Information Conference
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• 2024.01a
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• pp.255-256
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• 2024

고령화가 가속되면서 독거노인의 사회적 고립으로 인해 신체, 정신적 어려움이 발생하고 고독사하는 노인들의 수가 증가해 사회적 문제가 되고 있다. 또한 독거노인 관리를 위한 정부 인력은 한정되어 한 명이 담당해야 하는 사람의 수가 너무 많아 수많은 독거노인의 안전과 복지를 보장하는 데 현실적인 어려움이 있다. 이에 따라 본 논문에서는 독거노인의 안전과 복지를 책임지기 위해 IoT와 각종 센서를 활용하여 생체 정보를 수집하는 웨어러블 기기를 제작하고 데이터베이스 서버를 활용한 IT 인프라 구축을 통해 적은 인력으로 효율적인 의료 지원을 목표로 한다. 본 논문은 독거노인의 거주 환경에서 생체 데이터를 수집하고 이를 효과적으로 분석하여 컴퓨터를 통해 실시간으로 모니터링이 가능하다. 이는 고독사 상황을 사전에 감지할 뿐만 아니라 노인들의 일상생활에서 발생할 수 있는 위험 상황에 즉각적인 대처를 통해 독거노인의 안전 및 복지 수준 향상에 기여하고 나아가 소외 계층의 의료 환경 개선에 도움이 될 것으로 예측된다.

• The Journal of the Korea institute of electronic communication sciences
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• v.19 no.5
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• pp.999-1004
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• 2024

Research on the positive effects of indoor plants is being conducted not only in Korea but also globally. The Korean government has recognized these benefits and implemented a policy to distribute indoor plants to the elderly living alone and to patients. However, growing and maintaining plants can be challenging for busy modern people. Therefore, in this paper, we designed an indoor-only mini smart gardening system using two analog sensors and three interface circuits. The system is specifically configured to ensure that plants can thrive without human intervention by automatically controlling essential elements for plant growth, such as water, light, temperature, and humidity.

• Journal of the Korean housing association
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• v.18 no.1
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• pp.131-139
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• 2007

The aim of this paper is to find out different preference of common spaces and shared activities in senior cohousing community between regions in Korea: Seoul and other cities. Social survey was conducted nationwide and the respondents were 50s only, since they are the generation who will face to elderly housing subject within 10 years in turbulent Korean society. Collected data, about 1000, were analyzed by SPSS program using frequency, percentage, and Chi-square test. In summary, respondents mostly would like to move to senior cohousing on circumstance when they remain alone without big difference between regions. Loneliness and housekeeping were considered as the most difficult issues for the elderly to manage by themselves. Among common spaces, exercise room was the most preferred space to meeting room and kitchen. Exercise room was more preferred in Seoul than in other cities, on the contrary meeting room was evidently less preferred in other cities than in Seoul. Regarding shared activities, resident meeting, gardening, and common meal were revealed as less preferred activities than hobby exercise and tea meeting. As a conclusion, I would like to propose that a big common living room is better to be designed for meeting room cum dining and gathering room with flexibility in order to give residents chances to know each other more often. And since common space and shared activity show different preferences by regions, those are to be designed and planned reflecting region's different circumstance.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2007.02a
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• pp.87-96
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• 2007

Ubiquitous is a Latin-derived word meaning "to exist at any time and place" like water or air. In computing, the word "ubiquitous" indicates an environment in which users have access to networks without any limitation regarding computer networks or places. Important issues in building Ubiquitous Korea (U-Korea) are the social problems appearing with a rapid increase in the old age population. Nowadays, with the rise of the nuclear family, the increase in the number of elderly people living alone, and the change in the status of women, both wives and husbands are employed outside the home, and the relatives who would be responsible for supporting the elderly sometimes are on long or short business trips, and it happens that old people can't be looked after. Therefore the government developed a wireless paging system for the sick, disabled, old and weak so that when an emergency happens, by just simply dialing 119, an emergency aid center could take prompt action. However, the present wireless paging systems composing the under-layer of the emergency aid information system have some problems, such as, a lack of reliability, problems among terminals, mobile transmitters and receiving terminals, the users' refusal to admit the need for the system and poor operational skills, administrators' perfunctory management and checks, etc. On account of these problems, the system efficiency has degraded and therefore a system upgrade is necessary. In this paper, we attempt to evaluate the newly implemented SAFE119 system, a new wireless paging system seeking to correct the problems of the current system.