• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.4
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• pp.55-63
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• 2019

Proximity sensors and rearview cameras for automobile safety are common, but many accidents are still occurring. Using the All Around View and object recognition algorithm to show the front, back, left, right and bottom of the vehicle, the sensor detects the presence of a living body when the vehicle starts or parks, and displays the outside of the vehicle on the screen. In addition, the object recognition algorithm is used to visualize the object by expressing the position of the object. In this way, we propose a strong safety system that can prevent human accidents caused by the vehicle by sensing, screen, and expression.

• The Journal of the Korea institute of electronic communication sciences
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• v.12 no.6
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• pp.1087-1092
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• 2017

This paper describes a work that makes convenient use of room indicator of a professors' office. The functions are divided into two main functions, the main function being the display panel and the additional function LCD display. Both of these functions are designed to be controlled by smart phone application using bluetooth wireless communication.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.30 no.1
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• pp.87-95
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• 2016

Recently, the interests of the precise localization are rapidly increasing, which are linked to IoT(Internet of Things) sensors. The precise localization in indoor environment can be utilized in navigation, security, anti-collision, and various location based services etc. However, conventional positioning sensors, such as PIR, ultrasonic, microwave etc. are vulnerable to weather or insensitive to direction of subject movement or low precision performance. In this paper we implement a UWB-IR localization system for long distance and high-precision localization, which is not affected by temperature, light and weather. The proposed system was divided and designed by H/W, Antenna, S/W parts, each of which was designed based on an accurate analysis and simulation. As a result, we can implemented and verified UWB IR system with precise localization performance.

• Journal of Navigation and Port Research
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• v.35 no.2
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• pp.131-136
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• 2011

As the faithful performance of ISPS of IMO, nowadays actually applicable an integrated safety and security system in and out of vessel should be organized in views of seafarers. Therefore, this paper is aimed to design a fundamental system for ship's integrated safety and security. The system of integrated grabbing will affect efficiently in any maritime field of material and human flow. Therefore this research will be expected to affect economical side by securing all the risk of maritime issues. In addition to the passenger ship and merchant vessel, it is applicable to other public and private vessels either. As a result of this paper, the system designed collecting various data through integrating the system including RFID reader, PIR sensor, and CMOS camera by putting an individual number into each unit that could be control at easy.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.489-492
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• 2018

사물인터넷을 기반으로 움직임을 감지하고 사진을 촬영하는 야생동물 방범장치를 구현하였다. 움직임을 감지할 수 있도록 진동과 PIR(Passive Infrared Sensor) 센서를 부착하였고, 촬영한 사진은 웹과 앱에서 확인할 수 있도록 하였다. 본 논문에서는 야생동물 방범장치의 설계 부분인 UML(Unified Modeling Language) 을 활용한 여러 다이어그램과 IoT(Internet of Things) 기반 야생동물 방범장치를 구현한 결과물을 볼 수 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.1745-1747
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• 2015

에너지 절약에 대한 필요성이 대두되면서 다양한 절전 기능을 갖춘 모니터들이 출시되고 있다. 하지만 단순히 몇 분간 컴퓨터 동작이 없을 시 절전 모드가 되는 등 획일화된 기능들이 주를 이룬다. 이에 본 논문에서는 동작 감시 센서를 이용하여 실사용자가 모니터 앞에 없을 시 전원을 꺼주는 절전 시스템을 제안한다. 제안하는 시스템에서는 동작 감시 센서를 이용하여 모니터 앞에 있는 사용자를 감지하며, 3분 이상 동작이 없을 시 윈도우 API를 통해 모니터 화면 만을 꺼주도록 한다. 동작 감시 센서의 사각지대 존재, 사용자 동작이 멈추는 특수한 상황 등의 보완점이 존재하지만, 모니터 앞에 있는 실사용자를 인식하여 절전 기능에 활용한다는 점에서 실사용자에 초점을 맞춰 다양한 방향으로 응용 가능할 것으로 기대된다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.5
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• pp.131-136
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• 2016

In this paper, we propose an Raspberry Pi2-based smart home security monitoring system. Proposed home security monitoring system was configured using a relatively tractable main processor raspberry pi2, ultrasonic sensors, and PIR sensors. In addition, The picamera is compatible with raspberry pi2 was connected to the servo motor. And by driving the attacker's location the video was recording. The Web server stores data of the recorded image and the sensor, and provides a web page to enable the monitoring at all remote locations. When examining efficiency of proposed home security monitoring system it was found that proposed system is easier to be made than existing home security system and is able to minimize the blind spot of the camera by using servo motor and is efficient and convenient and stable as it enables a user to handle an error in person and it uses reliable data.

• Journal of Institute of Control, Robotics and Systems
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• v.20 no.5
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• pp.486-494
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• 2014

Intelligent homes consist of ubiquitous sensors, home networks, and a context-aware computing system. These homes are expected to offer many services such as intelligent air-conditioning, lighting control, health monitoring, and home security. In order to realize these services, many researchers have worked on various research topics including smart sensors with low power consumption, home network protocols, resident and location detection, context-awareness, and scenario and service control. This paper presents the real-time metabolic rate estimation method that is based on measured heart rate for human adaptive appliance (air-conditioner, lighting etc.). This estimation results can provide valuable information to control smart appliances so that they can adjust themselves according to the status of residents. The heart rate based method has been experimentally compared with the location-based method on a test bed.

• Physical Therapy Rehabilitation Science
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• v.11 no.1
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• pp.49-57
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• 2022

Objective: This study aims to conduct a comprehensive review of monitoring systems to monitor and manage physical function of community-dwelling elderly living alone and suggest future directions of unobtrusive monitoring. Design: Literature review Methods: The importance of health-related monitoring has been emphasized due to the aging population and novel corona virus (COVID-19) outbreak.As the population gets old and because of changes in culture, the number of single-person households among the elderly is expected to continue to increase. Elders are staying home longer and their physical function may decline rapidly,which can be a disturbing factorto successful aging.Therefore, systematic elderly management must be considered. Results: Frequently used technologies to monitor elders at home included red, green, blue (RGB) camera, accelerometer, passive infrared (PIR) sensor, wearable devices, and depth camera. Of them all, considering privacy concerns and easy-to-use features for elders, depth camera possibly can be a technology to be adapted at homes to unobtrusively monitor physical function of elderly living alone.The depth camera has been used to evaluate physical functions during rehabilitation and proven its efficiency. Conclusions: Therefore, physical monitoring system that is unobtrusive should be studied and developed in the future to monitor physical function of community-dwelling elderly living alone for the aging population.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.534-539
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• 2008

This paper is about intelligent hexapod robot for the support walking of the aged person. The robot using various sensors and small camera has various abilities of forward backward walking, turing left or right, control the speed of walking, avoiding the obstacles and detecting risky situation of fire or gas. To let the aged feel soft and safe walking, we used special servo motor and developed hexapod walking mechanism and effective algorithm.