• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.3
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• pp.487-492
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• 2005

As the portable medical equipments consume the power and transmission of the information, they need the system to use long. Although the current wireless transform systems for medical equipments use Bluetooth protocol system, an electricity consumption is big because it uses long and there is the difficulty in the utility We designed a module using the Zigbee protocol which an electricity consumption is more small though a transmission speed is slower than Bluetooth and drew the plan the wireless transmit system for medical equipments to use long.

• Proceedings of the Korean Society of Computer Information Conference
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• 2017.01a
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• pp.27-28
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• 2017

본 논문은 RSSI 값을 이용한 Zigbee Commissioning 기법에 대하여 서술한다. Zigbee는 대표적인 무선 통신 표준 기술로 다양한 분야에서 활용 하고 있으며, Zigbee를 이용한 Commissioning은 주로 Smart Led와 같은 분야에서 활용되고 있다. Zigbee Commissioning의 주된 과제는 기기와 네트워크를 구성하는 것에 있는데 RSSI신호에 민감하여 각 디바이스를 식별할 때에 문제점이 있다. 본 논문에서는 RSSI값을 제안하는 알고리즘을 이용하여 효율적으로 Zigbee Commissioning하는 기법을 서술한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.12
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• pp.2392-2400
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• 2015

Zigbee, which was a representative standard technology for dealing low energy and mesh networks in large deployment area such as smart home, smart building, and massive sensor networks, has been developed and deployed for increasing communication area by using Ad hoc method. It has been originally developed based on IEEE 802.15.4 standard so every node needs 48bit unique address defined by IEEE. However, it is absolutely inefficient to assign an unique address to every communication node where it would be deployed through large-scale network area, e.g., smart lighting and massive sensor networks, because there could be variously multiple companies to deploy network infrastructure and they could have different policy to assign node ID. To prevent the problem, this paper proposes a method of dynamic PANID assignment in overall Personal Coordinators, and also proposes a method for addressing PANID conflict problem which could be derived from dynamic PANID assignment.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.4
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• pp.221-227
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• 2013

In this paper, zero-energy house in order to monitor the energy savings come with Zigbee communication temperature humidity, smoke detection, illumination and CO2 to develop complex sensor board a protocol for handling about it dealt. In particular, indoor space to mount the sensor based on the location of the control algorithm, so it varies through the Zigbee wireless sensor mounting position is free, and the advantage of being able to change. Also, the energy loss that occurs through the window can be reduced to the room lighting can play an important role in the control system.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.5
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• pp.1071-1076
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• 2015

This paper proposed an efficient algorithm for tension sensing smart fence system with wireless sensor transmission module installation and alarming services. The wired transmission system demonstrates high accuracy and low latency, but the cost is expensive and transmission error may occur. For these reasons, this paper presented to use wireless transmission communication using Zigbee module technology in order to decrease delay and latency and solve the battery issues.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.9
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• pp.1158-1164
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• 2020

In Korea, the dependence on imported energy is very high, and research to reduce standby power is being conducted based on Zigbee, a low-power technology, to reduce wasted power and improve power efficiency. However, because Zigbee is not an IoT standard protocol and is not network-based, it is necessary to build a network with a separate gateway, and research on standby power is insufficient because the standards for international power consumption of devices are ambiguous. Therefore, in this paper, we applied the IoT standard protocol MQTT to the existing Zigbee technology to build a network network without a separate gateway, and designed and implemented a standby power reduction system that collects standby power degradation and user patterns. As a result of evaluating with the existing system, it was confirmed that about 7.11% of standby power was consumed compared to the existing system.

• Journal of Digital Convergence
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• v.14 no.4
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• pp.259-265
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• 2016

In this paper, a remote control system capable of monitoring and controlling the temperature of a refrigerator in real time using the ZigBee communication technology is developed. The developed system provides 24-hour surveillance function including temperature maintenance and it is able to determine monitored data from a remote location and to change the setting of the temperature value. In case the value is out of the setting, it is designed for administrators to verify the problem and take action, sending alarms to management server and the emergency to a preset administrator via SMS. Applying this system to refrigerators storing commercial, medical, and experimental material, the real time status such as temperature and malfunction of refrigerator can be managed up to 16 SZM(Slave Zigbee Module) by only one MZM(Master Zigbee Module).

• Proceedings of the KIEE Conference
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• 2007.10a
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• pp.203-204
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• 2007

BACnet (Building Automation and Control Networks) 은 빌딩 자동화와 컨트롤 시스템 전용의 표준 데이터 커뮤니케이션 시스템이다. BACnet은 현재 데이터링크 레이어의 전송 미디어로 5개의 유선 프로토콜을 제공하고 있다. 최근 건물 통신망에 무선 기술에 대한 수요 및 필요성이 높아지고 있다. Zigbee 는 IEEE 802.15.4를 기반으로 한 저 전력 무선 통신의 표준 프로토콜로써 유비쿼터스 센서 네트워크의 특징을 포함하고 있다. 본 연구에서는 BACnet의 데이터 링크 레이어의 확장된 무선 옵션으로 Zigbee를 포함하는 기술에 대해 연구하고 이를 기술한 실제 모델을 개발한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.289-290
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• 2018

본 과제는 각종 센서를 활용하여 빠르고 정확하게 화재를 감지하고 스프링클러를 활용한 초기진압과 동시에 어플리케이션을 통한 자동신고 기능을 포함하고 있다. 열/연기 감지센서를 통해 빠르게 화재 발생을 감지하고 화재감지기에 부착되는 Zigbee통신으로 스프링클러 시스템과 통신하여 초기진압을 하며, 고유 번호로 정확한 화재진원지를 파악하여 소방원들의 화재진압에 도움이 된다. 또한 연동되어있는 어플리케이션의 자동 신고기능을 통해 소방서에 정보를 제공하여 빠른 출동이 가능하게 되고 스피커를 통해 화재발생시 화재경보로 알려주어 신속한 대피를 할 수 있다.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.43 no.11 s.353
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• pp.78-84
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• 2006

This paper proposes a method to endow the mobility to the Zigbee protocol which is a short distance wireless communication technology among the standards of wireless sensor networks. The Zigbee has a low price, long life battery, simple structure and connectivity. So it is a suitable standard for the short distance wireless communication of $10m{\sim}70m$. As the Zigbee does not support the mobility, additional factors should be studied to deal adeptly with the diverse change in the real field. By solving the problem that the previous connection and binding table of the Zigbee end device should be reset due to the Zigbee end device address variation when the Zigbee end device moves from the present router to another router, this paper presents the method to communicate without data loss or disconnection.