• Title/Summary/Keyword: Electric Home Appliances

Search Result 145, Processing Time 0.028 seconds

A Study on the Establishment of Preventive Measures for Electric Fires Using the 4M Technique (4M 기법을 활용한 전기화재 예방대책 수립 연구)

  • Oh, Teakhum;Park, Chanseok
    • Journal of the Korea Safety Management & Science
    • /
    • v.23 no.4
    • /
    • pp.23-29
    • /
    • 2021
  • The purpose of this study is to reduce the probability of occurrence of electric fires as a preemptive preventive measure, and to strengthen the capability of preventing electric fires by strengthening the cooperative function between electric fire-related departments and establishing a cooperative system. In this study, the general aspects of electric fires were identified by reviewing the literature such as ignition mechanisms of electric fires. And the major electrical fires that occurred in the last 10 years were classified into ignition factors (short circuit, overload/overcurrent, and earth leakage/ground fault) and ignition sources (wiring/wiring appliances, electrical equipment/household appliances). And the 4M technique was used to analyze the potential causes of ignition at the fire site and to suggest preventive measures. In the case In this study, out of 48 electrical fires in the past 10 years, 16 short-circuit fires, 3 overload/overcurrent fires, 3 short-circuit and earth fault fires, 16 fires in wiring/wiring appliances, and 10 fires in electrical equipment/home appliances classified as cases. And prevention measures were presented in terms of human, machine, media, and management by using the 4M technique. For the preemptive prevention of electric fires, strengthening the compulsory electrical safety inspection and making it mandatory to report when new or expanding electric facilities, charging a fee for electric safety inspection for detached houses and granting benefits subject to inspection completion, improvement of the electric safety voluntary inspection table and safety indications; It was suggested as a policy to organize and operate electrical safety inspection personnel in a two-person team (mixed), establish a close work cooperation system with related organizations, and strengthen electrical safety education and publicity.

Correlation among Ownership of Home Appliances Using Multivariate Probit Model (다변량 프로빗 모형을 이용한 가전제품 구매의 상관관계 분석)

  • Kim, Chang-Seob;Shin, Jung-Woo;Lee, Mi-Suk;Lee, Jong-Su
    • Journal of Global Scholars of Marketing Science
    • /
    • v.19 no.2
    • /
    • pp.17-26
    • /
    • 2009
  • As the lifestyle of consumers changes and the need for various products increases, new products are being developed in the market. Each household owns various home appliances which are purchased through the choice of a decision maker. These appliances include not only large-sized products such as TV, refrigerator, and washing machine, but also small-sized products such as microwave oven and air cleaner. There exists latent correlation among possession of home appliances, even though they are purchased independently. The purpose of this research is to analyze the effect of demographic factors on the purchase and possession of each home appliances, and to derive some relationships among various appliances. To achieve this purpose, the present status on the possession of each home appliances are investigated through consumer survey data on the electric and energy product. And a multivariate probit(MVP) model is applied for the empirical analysis. From the estimation results, some appliances show a substitutive or complementary pattern as expected, while others which look apparently unrelated have correlation by co-incidence. This research has several advantages compared to previous literatures on home appliances. First, this research focuses on the various products which are purchased by each household, while previous researches such as Matsukawa and Ito(1998) and Yoon(2007) focus just on a particular product. Second, the methodology of this research can consider a choice process of each product and correlation among products simultaneously. Lastly, this research can analyze not only a substitutive or complementary relationship in the same category, but also the correlation among products in the different categories. As the data on the possession of home appliances in each household has a characteristic of multiple choice, not a single choice, a MVP model are used for the empirical analysis. A MVP model is derived from a random utility model, and has an advantage compared to a multinomial logit model in that correlation among error terms can be derive(Manchanda et al., 1999; Edwards and Allenby, 2003). It is assumed that the error term has a normal distribution with zero mean and variance-covariance matrix ${\Omega}$. Hence, the sign and value of correlation coefficients means the relationship between two alternatives(Manchanda et al., 1999). This research uses the data of 'TEMEP Household ICT/Energy Survey (THIES) 2008' which is conducted by Technology Management, Economics and Policy Program in Seoul National University. The empirical analysis of this research is accomplished in two steps. First, a MVP model with demographic variables is estimated to analyze the effect of the characteristics of household on the purchase of each home appliances. In this research, some variables such as education level, region, size of family, average income, type of house are considered. Second, a MVP model excluding demographic variables is estimated to analyze the correlation among each home appliances. According to the estimation results of variance-covariance matrix, each households tend to own some appliances such as washing machine-refrigerator-cleaner-microwave oven, and air conditioner-dish washer-washing machine and so on. On the other hand, several products such as analog braun tube TV-digital braun tube TV and desktop PC-portable PC show a substitutive pattern. Lastly, the correlation map of home appliances are derived using multi-dimensional scaling(MDS) method based on the result of variance-covariance matrix. This research can provide significant implications for the firm's marketing strategies such as bundling, pricing, display and so on. In addition, this research can provide significant information for the development of convergence products and related technologies. A convergence product can decrease its market uncertainty, if two products which consumers tend to purchase together are integrated into it. The results of this research are more meaningful because it is based on the possession status of each household through the survey data.

  • PDF

A Study on Home Telemetering System using Power Line Communication (전력선 통신을 이용한 가정용 원격 검침 시스템에 관한 연구)

  • Yu Yung-Ho;Shin Il-Sik
    • Journal of Advanced Marine Engineering and Technology
    • /
    • v.29 no.6
    • /
    • pp.678-684
    • /
    • 2005
  • In this Paper telemetering system for home automation is Proposed and implemented. Proposed and developed systems are composed with a home server and a few clients which send metering data of gas electric power water and home security to home server using power line communication. Management computer located in office of apartment complex collects all kinds of measured home data from each home server with multi drop communication by UDP Protocol A simple ASK method is used for power line communication Collected data from each home can be used for issuing the bill of each house and web service. The experiments were carried out under laboratory environment using various kinds of electric home appliances to ascertain the performance.

Characteristics of a Home Panel Board with Surge Protection Device (서-지차단장치 내장형 단위세대 분전반의 특성)

  • 이종혁;송재용;이종호;홍경민;길경석
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2000.05a
    • /
    • pp.480-483
    • /
    • 2000
  • We developed a home electric panel board with surge protection device to protect home electric appliances from transient overvoltages and electromagnetic(EM) noise. In this paper, electrical characteristics of the home electric panel board are described. From the performance test using a combination surge generator standardized in IEC 610004-5, it is confirmed that the proposed home panel board has an excellent surge protection performance. Also, EM noise reduction characteristics of the panel board in ranges from 150 kHz to 30 MHz is estimated by using a network analyser, and the results showed that the panel board has an over 20 45 noise reduction performance.

  • PDF

Evaluation Methods for Chemical Emissions from TV Products and Establishing Criteria for the Perceived Indoor Air Quality (컬러TV 제품의 오염물질 방출특성 평가방법과 관리 기준안 설정에 대한 연구)

  • Kang, Hyo-Seok;Yoon, Dong-Won;Lee, Yoon-Gyu
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
    • /
    • v.22 no.5
    • /
    • pp.304-313
    • /
    • 2010
  • During recent years, various studies have demonstrated that indoor chemical pollution causes health problem and also negatively affect the performance of work by occupants. Building materials have been concerned as indoor chemical sources. Some of guidelines and certification system has been developed and resulted as dramatic decrease of harmful indoor chemicals such as formaldehyde and volatile organic compounds. Also, Home furniture and electrical devices has been concerned as one the primary influence the indoor chemical concentration in residential spaces. It is found that various kinds of electric home appliances have a significant source of chemical emission in indoor environments. In this study, the methodologies of detecting harmful chemicals from various kinds of products has been developed with large chamber measurement system and suggest some of the evaluation method for the chemicals from the home appliances as TV sets.

The Automatic Demand Response Systems Design for Electric Power Control of Home Appliances (가전기기의 전력 제어를 위한 자동 수요반응 시스템 설계)

  • Kim, Su-hong;Jung, Jin-uk;Song, Ho-jin;Hwang, Min-tae;Jin, Kyo-hong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2015.10a
    • /
    • pp.228-231
    • /
    • 2015
  • Recently, the electric power consumption concentrated in specific seasons and time causes the unstable power supply. To resolve this problem, smart grid has emerged as an alternative to consume the power, efficiently. Smart grid that combines ICT with the existing electrical grid includes demand response as a core technology. Demand response enable the power consumption effectively by offering a variety of informations, such as power consumption, charges expected, etc., for consumers who voluntarily participate in the electricity markets. In this paper, we design the automatic demand response systems based on SEP 2.0 for the efficient power control of home appliances in the smart grid environments.

  • PDF

The implementation of home network using the RS422 Multi-drop mode serial communication (RS422 Multi-drop mode 시리얼 통신을 이용한 홈 네트워크 구현)

  • Byun Pil-sang;Kim Myeung-hwan;Kim Deok-jin;Park Se-hyun;Park Yeoun-sik
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.9 no.7
    • /
    • pp.1445-1451
    • /
    • 2005
  • Home-Network is an integrated network of the PC and all electric home appliances in the home so that they can communicate with each other. In the 21th century, here are various technology for Home Network environment such as HomePNA, IEEE 1394, Ethernet Lan and Bluetooth. For Home Network construction, generally, the standard series interface 'RS232' is used to make communication possible between electric home appliances. However Home network using RS232 has a problem. That is, All machines have to be connected to each other with RS232 using Point-to-Point mode. In this case, the system becomes complicated because we have to use circuits as much as there are machines and increased expenses. To improve this problem, In this thesis, designed home network using RS422 Multi-drop mode serial communication and controled it with embedded linux system. And connected RS422 with motors and sensors using PIC to make the home network virtual environment.

The implementation of home network using the RS422 Multi-drop mode serial communication (RS422 Multi-drop mode 시리얼 통신을 이용한 홈 네트워크 구현)

  • Byun, Pil-Sang;Kim, Myeung-Hwan;Kim, Deok-Jin;Park, Se-Hyun;Park, Yeoun-Sik
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • v.9 no.2
    • /
    • pp.512-516
    • /
    • 2005
  • Home-Network is an integrated network of the PC and all electric home appliances in the home so that they can communicate with each other. In the 21th century, here are various technology for home Network environment such as HomePNA, IEEE1394, Ethernet Lan and Bluetooth. For Home Network construction, generally, the standard series interface 'RS232' is used to make communication possible between electric home appliances. However Home network using RS232 has a problem. That is, All machines have to be connected to each other with RS232 using Point-to-Point mode. In this case, the system becomes complicated because we have to use circuits as much as there are machines and increased expenses. To improve this problem, In this thesis, designed home network using RS422 Multi-drop mode serial communication and controled it with embedded linux system. And connected RS422 with motors and sensors using PIC to make the home network virtual environment.

  • PDF

A Study on Electric Power Monitoring System per Appliance (기기별 전력 모니터링 시스템 개발에 관한 연구)

  • Park, Sung-Wook;Kim, Jong-Shick;Lim, Su-Jin;HwangBo, Sea-Hee;Son, Joon-Ik;Lee, In-Yong;Wang, Bo-Hyeun
    • Journal of the Korean Institute of Intelligent Systems
    • /
    • v.20 no.5
    • /
    • pp.638-644
    • /
    • 2010
  • This paper presents ideas of service scenarios for home residents using electric power monitoring system per appliance, the implementation of the monitoring system, and analysis of acquired electric power usage pattern. By acquiring and analyzing electric power usage pattern, home residents can get information of power usage pattern of every legacy (non-Demand Response-ready) appliance. Further they can get pieces of recommendation how to reduce energy consumption, intelligent standby power blocking service, and alarming service to abnormality of appliances. In order to check the feasibility of the ideas, a system that can acquire electric power pattern per appliance is implemented, and electric power pattern of some appliances are stored to a database and it was analyzed to show if auto-identification of a type of a device is possible, which is a basic required function for the scenarios presented.

A Study of consumer behavior for electric appliance according to emergencing price-off store (유통구조 변화가 소비자 행동에 미치는 영향에 관한연구-신유통업태 출현에 따른 가전제품 구매행동을 중심으로-)

  • 문숙재;조성은;김연정
    • Journal of Families and Better Life
    • /
    • v.16 no.1
    • /
    • pp.13-26
    • /
    • 1998
  • The purpose of this study of identify the changing trends of consumer behavior to emergencing Price-off store. Therefore this study analyzed contributing factors to consumer market selection behavior focused on electric appliances. for these research the data were collected through the questionnaire and 407 respondents were housewives in Seoul and Gyeongi-do. Their data were analyzed using Frequency Mean and $x^2$-test. The Major findings of this study were as follows. 1) The percentage of purchasing the national brands of electric appliances were majority. In general the frequency prefered shopping store were the general agents department store discount store and wholesale club were in order. 2) When consumer buy the electric appliance in wholsesale club the buying percentage of iron was the highest. And the percentage of selection of foreign goods brands were very high. 3) The most important factors to determine the using Price-off store was the presence of this market around the housing and easing and easiness of parking.

  • PDF