• International Journal of Computer Science & Network Security
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• v.23 no.4
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• pp.48-54
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• 2023

Nowadays, a blind man finds it very difficult to cross the roads. They should be very vigilant with every step they take. To resolve this problem, Convolutional Neural Networks(CNN) is a best method to analyse the data and automate the model without intervention of human being. In this work, a traffic signal recognition system is designed using CNN for the visually impaired. To provide a safe walking environment, a voice message is given according to light state and timer state at that instance. The developed model consists of two phases, in the first phase the CNN model is trained to classify different images captured from traffic signals. Common Objects in Context (COCO) labelled dataset is used, which includes images of different classes like traffic lights, bicycles, cars etc. The traffic light object will be detected using this labelled dataset with help of object detection model. The CNN model detects the color of the traffic light and timer displayed on the traffic image. In the second phase, from the detected color of the light and timer value a text message is generated and sent to the text-to-speech conversion model to make voice guidance for the blind person. The developed traffic light recognition model recognizes traffic light color and countdown timer displayed on the signal for safe signal crossing. The countdown timer displayed on the signal was not considered in existing models which is very useful. The proposed model has given accurate results in different scenarios when compared to other models.

• Proceedings of the IEEK Conference
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• 1998.06a
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• pp.565-568
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• 1998

In this paper, we implemented the electornic moving aid system for safe walking of the blind. An obstacle detecting of each sector used ultrasound and a distance measurement used time of flight. The alarm is designed to have a sound and a tactile function that can be selected on an user's convenience. This system can detect and obstacle of upward, forward, downward and optimally warn to the blind with vibration, beep sound by appling warning algorithm on object detection. Experimental testing and performance evaluation have been successfully carried out with a prototype cane, and the experiment shows the capability of the function to detect unknown objects within an assigned distance, under knees, over head height, and crushed puddles.

• Journal of the Korea Society of Computer and Information
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• v.23 no.7
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• pp.39-47
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• 2018

This paper confirms the risk of using smartphone through the analysis of collected usage pattern and proposes the smartphone intervention system in risk situations. In order to check the risk of smartphone usage, we made information collecting application and collected smartphone usage pattern from 11 experiment participants for two months. By analyzing smartphone usage pattern, we confirmed that about 12% of smartphone usage is being used in driving, walking, and on the street. In addition, we analyzed the response rate of smartphone notification in risk situations and confirmed that user responds the smartphone notifications in real-time even in risk situations. Therefore, it is required to present a system that intervenes the use of smartphone in order to protect smartphone users in risk situations. In this paper, we classify risk situations of using smartphone. Also, the proposed smartphone intervention system is designed to periodically detect risk situations. In risk situations, smartphone function can be restricted according to user setting of smartphone. And smartphone can be used normally when safe situation is restored.

• KIEAE Journal
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• v.5 no.2
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• pp.27-34
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• 2005

The purpose of this study were to examine actual conditions of apartment residents living with their companion animals and to identify their residential stress and needs of planning elements under those conditions. Questionnaire survey was adopted in this study, and 100 cases were used for data analysis. The subjects for this study were limited to the residents breeding pets in their apartments. The results of this study are as follows: Most of the residents share their living spaces with pets together like their family without spatial restrictions. They indicated problems related to breeding pets in their residence such as walking the dog, cleaning home, leaving pets alone, noise and unpleasant smell. However, they didn't seem to be stressed a lot for their living environments. In terms of residential planning elements, floor plans for effective natural ventilation, balcony with sufficient sunlight, sound proof system, easy-maintenance interior material, unlash area, rubbish bin, mechanical ventilation and central vacuum system and safe electric outlet were highly indicated.

• International Journal of Internet, Broadcasting and Communication
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• v.8 no.1
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• pp.27-32
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• 2016

The global positioning system (GPS)-enabled mobile phones provide location-based applications such as car and pedestrian navigation services. The pedestrian navigation services provide safe and comfortable route and path guidance for pedestrians and handicapped or elderly people. One of the essential components for a navigation system is a spatial database used to perform navigation and routing functions. In this paper, we develop modeling and categorization of pedestrian path components for smart tour guide services using the mobile pedestrian navigation application. We create pedestrian networks using 2D base map and sky view map in urban area. We also construct pedestrian networks and attributes of node, link, and POI using on-site GPS data and photos for smart pedestrian tour guide in the major walking tourist spots in Jeju.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2010.04a
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• pp.311-316
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• 2010

전 세계적으로 평균수명이 연장되고 있으며 고령자의 수가 증가하고 있는 가운데 특히 국내는 빠르게 고령화 사회로 진입하고 있다. 그러나 건축물 화재시 일반성인보다 피난이 난해한 고령자가 거주하는 시설의 피난안전규정은 제대로 이루어지지 않고 있으며 구체적인 방안 또한 미흡한 실정이다. 따라서 본 연구에서는 시니어장비를 이용해 일반성인과 고령자의 자유보행속도 및 군집형성시 보행속도를 조사하여 재해약자의 존재가 전체의 보행에 미치는 영향을 파악하고 향 후 고령자, 유아등 재해약자의 피난안전을 위한 방안의 기초 DATA의 자료로 사용하고자 한다.

• Fire Science and Engineering
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• v.3 no.2
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• pp.11-19
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• 1989

In this study, the independent variables are the floor plan configulation. The dependent variables are the occupant's egress behavior, especially spatial movement pattern, and life - safety performance of building. Fire events were simulated on single story of office building. Simulation run for allowable secaping thime(180 seconds) arbitrarily selected, and involved 48 occupants. The major findings Pre as follows. 1) Computer simulation model suggested in this study can be used as the Preoccupancy evaluation method of the life-safety performance for architectural design based on prediction of occupants' egress behavior in the levels of validity and sensitivity, 2) Sucess or failure in occupants' escape is determined by decreasing walking speed caused by jamming at exits or over crowded corridor, and increasing route length caused by running about in confusion at each subdivision and corridor. 3) In floor plan configuration which safe areas located at the extreme ends of the corridor, cellular floor planning have to be avoided preventing jamming and running about in confusion at overcrowded corridor.

• Journal of the Korean Institute of Rural Architecture
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• v.13 no.3
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• pp.29-36
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• 2011

The purpose of this study was analyzing with present conditions and content analysis of the parking area for the handicapped people. The researcher investigate to that establishment ratio, accessibility, the induction and guidance, and safe walking passage security, and proper space of the parking area for the handicapped people was established by lawfully. The results as follows. In spite of the regulation established by law, regulations was not established 40% on region government. The parking area for the handicapped people established Properly consider to the accessibility. But the size and height of the stand-up guide plate of the induction and guidance which corresponds in legal establishment standard of the handicapped people. then this research analyzes problems and suggests alternatives of the facilities.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2004.05a
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• pp.290-294
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• 2004

A number of guard lamps are utilized to ensure to safe walking during nighttime. Due to the lack of legal regulations, however, many guard lamps are not installed in organized ways, resulting in the increase of electric shock hazard. In order to establish the legal regulations which can be specifically applied to guard lamps, a research on the actual state of them is performed in this paper. As a result of the research, three regulations are addressed and suggested on equipment installation, management and development.

• Journal of Korea Multimedia Society
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• v.25 no.4
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• pp.640-648
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• 2022

Menopausal women have to care for their health. Menopause is a symptom that needs to be managed in the long term, which requires safe and economical treatment even after long term use. This study proposes digital-based exercise therapy. This study also suggests resistance exercise and walking exercise methods according to the proof of previous studies. It provides motivational contents for those who cannot perform regularly. As motivational methods, self-efficacy and narrative-based history methods are accepted. Self-efficacy is improved through voice agents feedback during exercise. Feedback is a type of messages such as encouragement and motivation. The narrative-based history consists of characters of visualization that improves through values, which leveraged by the exercise.