• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.11
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• pp.2113-2119
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• 2006

In this paper, we design the r-Sensor protocol for reliable data transmission in the Intelligent Home Service based on the wireless sensor network environment. The r-Sensor protocol improve the reliability of data transmission and node fairness using simple routing algorithm, congestion control, and loss recovery method that minimize the load of relay node. Reposed routing algorithm find out upstream and downstream nodes using the Network Management packet. Meanwhile, loss recovery algorithm uses the Aggregated-Nack. To apply supposed algorithm, the IHS-AMR(Intelligent Home Service - Automatic Meter Reader) and sensor node are designed and implemented in hardware. The IHS-AMR provides remote metering service and also offers home safety service by internetworking with sensor network, mobile phone network and internet.

• Journal of the Korean Institute of Gas
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• v.25 no.6
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• pp.1-6
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• 2021

In this study, we developed AMI terminals of 1 (reader): N (small transmitter). Currently, the government is focusing on the Gas AMI demonstration project to advance the outdated metering system of the urban gas industry, led by the government-sponsored ministries. The supply of gas AMI meters has the advantage of resolving uncertainties in privacy violations and measurement information and preparing for consumer safety through gas leakage detection. In the case of existing AMI meters, readers and transmitters were 1:1 methods, while this technology can be extended to multiple generations with a 1:N method, and a technology that can extend battery life by implementing a low-power design is applied. We hope that this research will contribute to the gas AMI supply project in the future.

• Journal of the Korean Institute of Gas
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• v.27 no.2
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• pp.57-64
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• 2023

As the meter reading method of gas meters develops, smart gas meters capable of remote meter reading (leak checking meters and multi-function safety meters) are being used. These meters have a function to judge leakage by utilizing the flow rate and pressure data collected as an additional function. Leakage judgment function using flow rate data has valid cases in the actual field, but the pressure data-based leakage judgment standard is based on not only the pressure value change due to leakage but also various factors (pressure regulator pressure, connection with adjacent meters, usage of adjacent houses, location of meters, etc.). There is a problem with pressure magnitude changes (levels). In this paper, as a technique that can judge leaks by using pressure data collected from smart gas meters, it was developed through preprocessing of pressure data, criteria for pressure value ranges related to leaks, leak judgment techniques, and application case verification.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.225-228
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• 2017

In this paper, we propose a methodology to deal with the IOT system gradually as the use of effective systems such as electronic devices, healthcare, smart cars, smart home, remote meter reading and telemedicine closely related to our real life in the IOT system An IOT integrated account solution is needed as a way to address these needs as the demand grows for the need to identify and manage how users access and use the system for what period of time and at what point in time. We propose the communication algorithms for endpoint system, IOT system management rights policy, user information, and how to apply them to IOT system smart car and smart home on each object internet.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.10
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• pp.101-107
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• 2007

In order to introduce remote monitoring system for effective safety management of electrical facilities for general use, which the most of electrical fires and non-inspection problems due to absence are generated development of local device model considering cost and installation is requested. This paper presents local device models for remote electrical safety inspection of electrical facilities for general use and in order to rational model according to installation place of electrical facilities for general use, compare and analysis cost, installation and communication method of local device models. The results show that rational model for remote safety inspection of electrical facilities located in houses, which occupy the must of electrical facilities for general use, is to give safety monitoring ability to low voltage remote meter reading(or automatic meter reading: AMR).

• Korean Journal of Construction Engineering and Management
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• v.15 no.4
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• pp.39-48
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• 2014

The speed of aging society is increasingly getting faster in Korea. Currently, there are over one million elderly living alone, which represents more than 19% of the total elderly in Korea. Although various policies and research have been implemented for caring the elderly living alone, there have been obvious limitations in realization of the caring system due to inconvenience, privacy violation, difficult operation and maintenance. Therefore, the objective of this study is to develop a method and a prototype system to monitor safety of elderly living alone by using energy usage information of automatic meter reading device. The proposed system is expected to improve or resolve the existing limitations and to provide 24 hour monitoring and early detection of death for the elderly living alone without adding staffs for operation and maintenance in a more effective and economic way.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06d
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• pp.137-140
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• 2007

전력계통의 환경변화(분산전원 연계, 구역전기사업자 출연 등)에 능동적으로 대응할 소비자-공급자간 양방향 통신/서비스 인프라의 핵심으로 Consumer Energy Portal의 필요성이 점점 증대되고 있다. 이는 에너지 서비스 사업자와 수용가 설비 및 기기들 사이의 양방향 통신을 가능하게 하는 H/W 및 S/W의 결합 또는 수용가의 In-Building Network와 Wide-Access Network를 연결하는 물리적인 Link이자 논리적인 결합 등과 같은 의미를 지닌다. 즉, Consumer Energy Portal은 전력에너지 체인의 운영방식을 물리적인 것에서 웹 방식으로 전환한 것으로 전력사업자와 소비자 사이의 양방향 상호작용을 가능케 하고 최종 소비자의 모든 기기들을 서로 네트워킹하며 이를 통해 과거 물리적인 방식의 운영과는 차원이 다른 다양한 서비스와 운영이 가능하게 하는 Service Portal이다. 본 논문은 수용가의 실시간 원격검침 데이터를 지그비(ZigBee) 통신기술을 이용하여 수집하는 것과 물리적으로 연결된 설비들을 제어할 수 있는 양방향 Network Access 망을 구축하여 전력사업자의 통합자원관리, 수요관리, 부가서비스제공에 기여하고자 한다.

• Proceedings of the KIPE Conference
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• 2008.06a
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• pp.148-150
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• 2008

지구온난화와 화석연료의 고갈 등 에너지관련 문제들이 발생함에 따라 제한된 자원의 효율적인 소비가 중요한 연구주제로 다루어지고 있다. 특히 자원수입국인 우리나라의 경우는 국제 유가 급등과 같은 에너지파동에 상당히 민감하기 때문에 에너지 관리를 통한 정확한 수급정책 수립 및 효율적인 소비생활이 무엇보다 중요하다. 이를 위해 우선적으로 취할 수 있는 해결책 중의 하나가 댁내 가전기기의 불필요한 전력낭비를 최소화하는 것이다. 이번 연구에서는 전력선통신(PLC)기반 원격검침 인프라를 활용하여 1차적으로 가전기기의 대기전력을 지능적으로 관리함으로써 전력낭비를 최소화하고 2차적으로 전력소비모니터링 서비스를 제공함으로써 사용자가 능동적으로 전력소비를 줄일 수 있도록 하는 지능형 홈에너지 관리시스템을 개발하였으며, 실제 수용가를 대상으로 구축, 운영함으로써 향후 에너지를 효율적으로 관리할 수 있는 방안을 제시하고자 한다.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.9
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• pp.100-106
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• 2013

AMI enables bi-directional exchange of information between utilities and consumers in order to maximize energy efficiency. To enable the AMI, it is essentially required to construct stable communication networks. This paper shows the AMI system based on IEEE 802.11s as one of the communication methods. Experimental results show that the wireless mesh network technology achieves a stable communication performance over a wide coverage.

• Proceedings of the KIEE Conference
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• 2001.07a
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• pp.308-310
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• 2001

With the development of Computer & Communication Technology, nowadays many people are interested in remote metering, and many vendors are suggesting various remote metering solutions. KEPCO (Korea Electric Power Corporation) adopts some of these to some customers who uses a lot of electric power, also continues researching them. But, currently used electronic watt-hour meters vary in terms of communication protocol and data structure by the vendors. So we have to know each vendor's communication protocol and data structure to construct a remote metering system, or to find problems in it. But that's impossible to know each vendor's protocol and data structure because they are reluctant to tell those to outside the company. To solve these problems and to make a much more cost-effective metering system, KEPCO developed standard communication protocol between meters and PC (or metering server), and defined standard functions and data structure which can be used by everyone easily. Those developments support standard interface for every vendors' meters. And Those will be adopted by KEPCO for a part of a new metering standard for electronic watt-hour meters.