• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.230-232
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• 2021

As the ratio of double-income households and parental leave use increase, there is an increasing demand for products that help when raising children alone. In particular, there is a lot of demand for baby beds that help raise children without difficulty even by themselves. Therefore, in this paper, we propose a real-time monitoring of a smart crib using a sound sensor. The proposed bed uses a sound sensor to detect the child's crying and condition, and the measured sensor output value can be checked with a mobile application. When the sound sensor output value is more than a certain value, a voice file such as a lullaby recorded with the voice of the parents is played, and if the sensor output value is less than a certain value, the playing voice file is stopped. If the sensor output value continues to exist after a certain period of time, a pop-up notification is sent to the mobile application. This allows the child to quickly calm down with a sense of stability and comfort through the recorded voices of the parents, and the parents can remotely monitor the child's condition in real time.

• The Journal of the Convergence on Culture Technology
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• v.9 no.1
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• pp.619-625
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• 2023

In this paper, the remote care of medical beds with multiple body pressure sensors is described. Falling is one of the factors that seriously threaten the safety of patients and harm their health. In this study, a new bed was developed to overcome this. The bed system consists of a keyboard that can operate, a keyboard controller that manages the movement of the keyboard, a sensor that measures body pressure, a sensor controller that transmits and receives sensor values, a main controller that checks it and operates automatically or manually according to the algorithm, and a server that oversees all these information. The bed system checks the patient's location through a sensor and wirelessly alerts the server through the main controller when the patient determines that there is a risk of falling, so that the nurse or nurse can recognize the patient's dangerous condition. The server may receive state data transmitted from the wired/wireless terminal to monitor whether the bed system is operating normally. The controller of the keyboard operates a keyboard-type mechanism and automatically controls the prevention of bedsores connected by body pressure sensors to physically separate the area to which the patient's pressure is applied to prevent bedsores. The main controller checks the presence of the patient's bed and transmits it to the server. In conclusion, the proposed system can smart monitor the user's state and perform remote care.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.232-235
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• 2020

본 논문은 코골이 및 폐쇄성 무호흡 환자들의 수면의 질 향상을 위한 자세 교정 및 건강관리를 제공하는 스마트 침대를 제안한다. 기존 코골이 및 폐쇄성 무호흡 환자들을 위한 베개 및 자세변환 시스템은 코골이를 방지해 주거나, 혹은 폐쇄성 무호흡 환자들을 위한 용도로만 존재해왔다. 이에 본 논문에서는 사용자의 코골이, 폐쇄성 무호흡뿐만 아니라 개별적으로 존재하는 질병을 침대에서 사용자의 수면 상태 정보, 산소포화도, 뒤척임 정보를 수집하여 개인별 차별화된 자세를 추천 및 교정해준다. 또한 전용 애플리케이션의 건강 신호등 시스템으로 사용자에게 자신의 건강을 직관적으로 확인 시켜 줄 수 있다. 이를 통해 본 논문은 코골이로 인한 소음, 무호흡증을 완화하고 숙면을 돕는 서비스 개발을 목적으로 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.245-248
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• 2019

2018년 한국의 합계출산율은 0.98명으로 OECD 회원국 중 출산율 1명이 되지 않는 유일한 국가가 되었다. 이에 대한 원인으로 경제적 문제, 맞벌이 부부의 증가로 인한 육아스트레스를 들 수 있다. 때문에 육아스트레스를 줄이기 위해 아이를 보다 편하게 보살필 수 있는 사물인터넷(IoT: Internet of Things) 기술이 접목된 육아용품이 필요하다. 이에 따라 본 논문은 기존의 아기침대에 사물인터넷 플랫폼을 추가하고 각 센서 들의 정보를 수집해 아기의 수면패턴분석 및 수면유도, 시트 온도조절, 시트 등받이 조절, 침대 자동 스윙 및 스윙 세기 조절, 침대 높낮이 조절 등의 기능을 수행하는 사물인터넷 기반의 새로운 육아용품을 개발해서, 부모들의 효율적인 육아 활동을 가능하게 하여 육아스트레스에 대한 부담을 크게 감소시키는 것을 목표로 한다.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.646-653
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• 2021

The medical bed developed in this study consists of N keys and each is driven vertically by an actuator. Since M sensors are mounted on each keyboard to measure body pressure, the resolution of the body pressure map is determined by the MN. A sensor controller is mounted on each keyboard, and the body pressure values measured from M sensors are transmitted to the main controller through a serial communication network such as CAN (Car Area Network). Each keyboard is equipped with a servo driver that drives a motor, and it is connected to the main controller via CAN to control the height of the keyboard according to the displacement value indicated by the main controller. In addition, the maximum body pressure value and body pressure ratio applied to each part of the keyboard are calculated and used as the basic data for controlling bed comfort by artificial intelligence. As a result, the proposed system can be a foundation that can be used for the control of body comfort and pressure sore prevention by artificial intelligence to be developed in the future.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.21 no.2
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• pp.89-95
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• 2021

Pressure sores are an unresolved human challenge. In this study, a keyboard-type medical bed was developed and a body pressure sensor was installed to provide a method to control the keyboard so that the pressure sores do not reach the critical pressure. For this, a keyboard-type mattress using a 4bar link is developed, and a method of controlling the height adjustment of the keyboard within the critical pressure through a body pressure sensor is used. There is a feeling of discomfort in the body when the keyboard is raised and lowered from pressure sores, which is an important factor: pressure x time, and only time control is performed, but if the proposed method is used, pressure is controlled within the critical pressure, thereby preventing bedsores in a comfortable state. The effectiveness and validity of the developed medical bed system were verified through theories and experiments.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.5
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• pp.215-222
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• 2018

Recently, various motion beds have been actively developed and popularized. The motion bed has the functions of height adjustment, back plate rising, knee lifting, tilt function and left / right rotation, and the remote control can conveniently be used by the patient himself or the caregiver to move the patient. However, since the medical bed for use does not have a function of preventing pressure ulcers, exchanging sheets, and transferring patients, it is necessary to disperse body pressure by using a pressure ulcer prevention matrix to prevent pressure ulcers. However, it is accompanied by muscle strength and hard work, and nurses are avoiding difficult nursing care. In this study, we developed the first prototype in the world and confirmed that the system works normally with the goal of developing multifunctional beds that automatically perform the prevention of bed sores, the exchange of sheets and the transfer of patients in order to facilitate such nursing work. It is anticipated that the proposed multifunctional motorized bed in the future will be a model of a medical robot for smart healthcare.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.501-502
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• 2021

기존의 홈 시스템은 비용이 비싸며 공간적인 문제가 발생하고, 기능적으로 한계가 있다. '아두이노를 활용한 스마트홈 시스템'은 아두이노를 활용하기 때문에 비용적, 공간적 문제를 해결하고 여러 가지 가전제품을 환경에 맞춰 자동으로 작동하는 스마트 기능을 넣었다. 온, 습도 센서를 이용해 내부 온도가 설정 값보다 높으면 에어컨이 켜지고, 습도가 낮으면 자동으로 가습기가 작동한다. 또한, 창문에 부착된 UV센서를 통해 자외선 수치가 높아질 경우 자동으로 블라인드가 내려간다. 침실에 누워 잠들기 전, 불을 꺼야 하는 상황이 있다. 이런 경우, 직접 불을 끄러 가지 않고 침대 머리맡에 설치된 초음파 센서에 손을 가져다 대어 일정 거리 값 이하로 되면 자동으로 침실 불이 꺼진다. 그리고 거실에 설치 된 인체감지센서를 통해 불이 꺼진 어두운 거실에 움직임이 감지되면 자동으로 거실 불이 켜지게 된다. 이러한 자동 제어 기능을 블루투스와 연동된 스마트폰을 통하여 사용자 편의에 따라 수동적 제어가 가능하고, 거실에 설치된 ESP-32CAM을 통해 밖에서도 거실 내부를 실시간 확인할 수 있다. 이런 아두이노 스마트홈 시스템으로 사용자들에게 편리함과 안정성을 제공한다.