• Title/Summary/Keyword: Zigbee 통신

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The development of indoor location measurement System using Zigbee and GPS (Zigbee와 GPS를 이용한 실내 위치 인식 시스템 개발)

  • Ryu, Jeong-Tak;Kim, In-Kyung
    • Journal of Korea Society of Industrial Information Systems
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    • v.17 no.4
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    • pp.1-7
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    • 2012
  • This paper proposes a new indoor location recognition system using a ZigBee network and a global positioning system(GPS). The proposed location recognition system applies GPS values that are mainly used for outdoor location recognition, to indoor location recognition; hence the techniques conventionally separated for the indoor and outdoor location recognition are integrated into one location recognition technique. The proposed system recognizes a location using the distance between nodes. Although the distance between nodes can be calculated by measuring the strength of the received ZigBee signals, generally the measured distance is not accurate and has high error rates since the strength of the ZigBee signals is different depending on the distance. In order to reduce the error rate, we have subdivided the output power of the received ZigBee signals into five levels. When a moving node generates a signal, each fixed node transmits the received signal strength and its own GPS information to other nodes, so the moving node can find its own accurate location in terms of the received signals.

위급상황감지 시스템을 위한 통신 방법

  • Song, Si-Gwang;Jang, Jae-Won;Park, Su-Jun
    • Information and Communications Magazine
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    • v.26 no.8
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    • pp.8-13
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    • 2009
  • 본고에서는 실내 외 환경에서 고령자의 행위를 모니터링 하고 행위를 추적하여 위급상황 발생 시 이를 감지하고 이를 RF, Zigbee, Bluetooth 등의 다양한 무선 통신 기법을 통해 경고하는 위급상황 경고 시스템(PEAS : Personal Emergency Alarming System)에 대해 고찰한다. 특히 시스템에 사용된 다양한 통신 방법의 장단점을 비교/분석하여 다양한 위급상황 감지 시스템의 요구사항에 적합한 통신 방법에 대해 논의하고자 한다.

A Multi-Protocol Gateway Middleware Design on Ubiquitous Sensor Networks (USN 기반 다중 프로토콜 게이트웨이 미들웨어 설계)

  • Hong, Sung-Il;Lin, Chi-Ho
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.38B no.11
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    • pp.895-901
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    • 2013
  • In this paper we propose design of a multi-protocol gateway middleware based on USN. The proposed multi-protocol gateway middleware defined the transmit messages format, and were used the USN module interface protocol for connect to external application MCU using the UART. In this case, the gateway was checks the communication state of Zigbee module with settings information, and setting Zigbee serial PDU format. The experimental results of the proposed multi-protocol gateway middleware were proved the efficiency of integrate protocol gateway to use the multi-protocol gateway than gateway to using the repeater through the power control and communications a controlled experiment.

Comparative analysis for advanced technologies of the location based service (위치기반 서비스 고도화 기술 비교 분석)

  • Shim, Hyun-Bo
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.4
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    • pp.853-871
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    • 2012
  • The location based service is divided into GPS that uses the artificial satellite or base transceiver station in order to cover the wide area and RTLS(Real Time Location System) using the Zigbee, RFID, CSS(Chirp Spread Spectrum), UWB, Bluetooth and Wi-Fi equipment in the space(close range) limited like the building inside or park. Moreover it also repeats the technical development upon through the acceleration of the development of the wire and wireless infrastructure and determination technology, the development of the Internet, diversification of the contents, and etc. As a result, it is expected to develop around the determination technology, witch is common core technology element, contents technology, Internet and mobile communication technology, and etc. afterward. In this research, the direction we investigate was to find and analyze new technology and standardization trend of LBS in order to contribute to the related industry.

Research of IoT Gateway system Using AllJoyn Platform (AllJoyn 플랫폼을 이용한 IoT 게이트웨이 시스템 연구)

  • Lee, Geon-il;Ku, Hong-mo;Jeong, Jae-Il
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.10a
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    • pp.781-782
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    • 2015
  • To use IoT Technology, it needs a platform to connect each devices. With this reason, Many corporations and organizations are trying to develop their own Platform. Among many platforms we select AllJoyn, IoT open source platform developed by Allseen Alliance which is association led by Qualcomm. Using AllJoyn, we transform data gathered from many communication techniques like WiFi, Zigbee and Bluetooth into AllJoyn platform format and deliver it to other AllJoyn devices. Ultimately, we realize gateway system which enables non-AllJoyn devices to communicate with AllJoyn devices.

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New multiple access technology for Bluetooth to collect the movement pattern of children (어린이 동선 환경정보 수집하기 위한 블루투스 동시접속 기술 설계)

  • Hwang, Seong-kyu
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.20 no.7
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    • pp.1262-1268
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    • 2016
  • Bluetooth has been developed to be applied over the course of several versions in different environments. Especially low is moving to address the constraints, it gives a high utilization rate is faster than the Zigbee wireless LAN communication. To gather information on children's environmental copper transition to multiple versions. There is one limitation of Bluetooth requirements to effectively apply the information collected by Bluetooth. At the same time need to collect several information actions, Bluetooth can not connect to one of only seven Slave Master. In this paper, in order to take advantage of the many benefits of Bluetooth to gather the information by operating the Bluetooth operates in Beacon deliver packets of 168 bits, and the pairing between the master and slave unnecessarily generate a regular signal a large number of connections simultaneously Information We consider how to apply the effective policy that can be collected.

Distributed Dynamic Lighting Energy Management System based on Zigbee Mesh Network (지그비 메쉬망 기반 분산형 동적 에너지 관리 시스템)

  • Kim, Sam-Taek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.14 no.6
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    • pp.85-91
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    • 2014
  • Nowadays, Dynamic lighting control and management skills are studied and used. If the system which is to manage multiple intelligent spot applied ubiquitous service technology is built with decision making and used in the complex intelligent space like a apartment then will improve energy efficiency and provide comfortability in optimal conditions. To solve this problem distributed autonomous control middleware and energy management system which process data gathering by zigbee mesh network and search proper services to save energy by the existing state of things is necessary. In paper we designed DDLEMS (Distributed Dynamic Lighting Energy Management System) that is to service duplex communication embedded by software based home server platform to provide mobile services in the smart place and support decision making about energy saving to the best use of wireless censor node and controled network, energy display devices.

A Study on Implementation for Wireless Gas Sensor Data Transmission Platform using ARM11 and Linux (ARM11 과 Linux 기반의 무선 가스 센서 데이터 전송용 플랫폼 구현)

  • Sun, Hee-Gab;Kim, Young-Kil
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.5
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    • pp.1022-1029
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    • 2009
  • What Ubiquitous means "being or existing anywhere, anytime"in Latin, which is, in other words, the users are able to access the network no matter where they are, what kind of network or computer terminals they use. This paper focuses on the implementation of hardware system. The first part of the sytem is the sensor node which transmits the sensor data from node to ARM11 platform through the Zigbee network wirelessly. The other part of the system is the ARM11 platform which receives and displays the sensor data. ARM11 platform is sink node. The ARM11 platform is based on ARM11 architecture and ported with Linux OS. Qtopia is used as Window Manager in order to make applications. The highly efficient ARM11 processor, S3C6400 MPC is the main part of the ARM11 platform.

Design and Implementation of a ubiquitous health care system (유비쿼터스 헬스 케어 시스템의 설계 및 구현)

  • Kim, Jeong-Won
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2007.10a
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    • pp.921-924
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    • 2007
  • In this paper, we have implemented a ubiquitous healthcare system that can measure and check human's health in anytime and anywhere. The implemented prototype are composed of both front-end and back-end. The front-end have several groups: environment sensor group such as temperature, humidity, photo, voice sensor, health sensor group such as blood pressure, heart beat, electrocardiogram, spo2 sensor, gateway for wired/wireless communication, and RFlD reader to identify personal. The back-end has a serial forwarder to propagate measurment results, monitor program, and medical information server. The implemented sensor node constructs a sensor network using the Zigbee protocol and is ported the TinyOS. The data gathering base node is linux-based terminal that can transfer a sensed medial data through wireless LAN. And, the medical information server stores the processed medical data and can promptly notify the urgent status to the connected medical team. Through our experiments, we've confirmed the possibility of ubiquitous healthcare system based on sensor network using the Zigbee.

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Information System of Smart u-LED Lighting Energy based on Zigbee Mesh Network (지그비 메쉬 망 기반 스마트 u-LED 전력제어 시스템)

  • Kim, Sam-Taek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.13 no.5
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    • pp.77-83
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    • 2013
  • Nowadays, the limitation of Lighting control and management skills is the excessive cost of equipments, the operational difficulties and wasting energy. To solve this problem is in need of communication and management S/W that is worked out complexly well as a information system of smart lighting energy, which is loaded wireless network facility. This paper made a study od the energy saving technology through energy monitoring and we developed LEIS(Lighting Energy Information Sysem) to converge this one. LEIS is monitoring and control lighting energy data that is collelcted from sensors by Zigbee mesh network and shows lighting use information by visualization to users. It is consists of lighting energy information data base based on LEM(Lighting Energy Metering) information and LEIS Web application, provide function scenario to manage energy optimization through LEIS.