• Title, Summary, Keyword: 비상통화

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The Design and Implementation of an Emergency Video Call Integrated Management System based on VoIP (VoIP기반 승강기 비상 화상통화 통합 관리 시스템 설계 및 구현)

  • Kim, Woon-Yong;Kim, SoonGohn
    • Journal of the Korea Convergence Society
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    • v.8 no.12
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    • pp.93-99
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    • 2017
  • The elevator system combines various convergence technologies with the development of ICT technology. Emergency call devices which are safety related devices is applied as an obligation of the elevator and those scope also varies. In this paper, we propose an integrated model that overcomes the limitations of existing voice emergency call devices and efficiently manages and manages video call based service structures in VoIP based on wired and wireless environments. This method effectively manages and operates various lift data and video records in the elevator between the manager, the server and the user. And also It is possible to secure the quality of video call in VoIP and cloud service environment and increase the reliability of safety management and enhance various service environment by creating an integrated structure utilizing various data and additional services in the elevator.

Development of the RAS-RMS Protocol optimized to PSTN environment and Implementation of its differentiated process (PSTN 환경에 최적화된 RAS-RMS 연동 프로토콜 개발 및 차별화된 처리과정 구축)

  • Chang, Sung-Keun;Lee, Jung-Ho
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.12
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    • pp.8357-8362
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    • 2015
  • The emergency call device has been installed and operated for the elevator passenger safety, but the call can not be connected or delay to the operator in an emergency. The application of the Internet of Things(IoT) technology is required for the systematic management and reliability of the emergency call device installed in the elevator. To meet these requirements it is necessary to apply the RMS(Remote Management System). Emergency call device periodically reports the operating status information and the emergency call history information of the emergency call device to the RMS in the PSTN(Public Switched Telephone Network) environment, and transmits the call request information in an emergency. RAS(Remote Access Server) plays a role of converting the PSTN signals to TCP / IP. RMS reports a significant outbreak call and abnormal operating conditions to administrators. In this study, we developed optimized protocol to PSTN environment that is required by RMS and implemented its differentiated process. And a RAS-RMS Protocol was added to the Application Layer. Development protocol consisting of simple structure as compared to CoAP, MQTT or HTTP can work properly in low-spec CPU and transmit elevator emergency key information easily.

A Study on a Elevator Emergency Call Device System and Performance Evaluation based on ICT for Efficient Handling in Emergency Situation (위급상황 시 효율적인 대처를 위한 ICT 기반의 엘리베이터 비상통화장치 시스템 및 성능 비교 연구)

  • Jung, Se-Hoon;Park, Sung-Kyun;Park, Hong-Jun;So, Won-Ho;Park, Dong-Kook;Sim, Chun-Bo
    • The Journal of the Korea institute of electronic communication sciences
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    • v.10 no.4
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    • pp.449-459
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    • 2015
  • A lot of people were trapped in elevators without power supply when BLACK-OUT situation occurred in 2011. The telephone network of control room connected to the elevators had problem operating poorly. In this paper we propose an ICT based elevator emergency call device prototype system and evaluate the performance of the system. The proposed system quickly responds in emergency situation to guarantee passenger safety. For the goal, firstly the system tries to connect to a control room. If it fails the system attempts to call numbers for emergency contact and a rescue team sequentially. The system is designed to quickly support emergency contact as well. Finally, the information of elevator failure is rapidly transferred to the failure process device by the proposed system.

Design of Safety Management System for IoT based in SIP (SIP기반 임베디드 IoT 안전관리 시스템 설계)

  • Kim, Sam-Taek
    • Journal of the Korea Convergence Society
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    • v.9 no.10
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    • pp.69-74
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    • 2018
  • IP and SIP public broadcasting systems developed in Korea and abroad are developed in a Windows or Linux server environments and are installed in a server-rack structure, have high power consumption, and are difficult to remotely respond to system failures. In this paper, IoT platform is designed to connect IoT device and gateway to IoT service server by using internet service structure. We also designed a server based on embedded OS that can provide a variety of public safety management services according to the order of the server with built-in call processing and broadcasting function that can handle emergency calls and emergency broadcasts in public places using this structure. This server is interoperable with a variety of SIP-based call and broadcast devices that support the standard SIP and can be integrated with an in-house phone and on-premises system.

The Receive Channel Allocation Scheme on the Digital Trunk Radio System for the Emergency and Disaster Communication in the call congestion (호 폭주 비상재난통신 디지털 TRS(Trunked Radio System) 수신채널할당 기법)

  • Lee, Soon-Hwa;Oh, Kab-Keun;Hong, Wan-Pyo
    • Journal of Advanced Navigation Technology
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    • v.13 no.6
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    • pp.950-956
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    • 2009
  • Nowdays the mobile traffic have been greatly increasing. This traffic increment has been caused the lack of frequency. To solve this problem, many study to improve the frequency efficiency in the field of mobile communication has been performed in a variety angle. However this kind of study was focused to 1:1 traffic. This paper propose the allocation scheme of the receiving channel in 1:N group traffic. This method apply to the TRS(Trunk Radio System) that use for the emergency disaster telecommunications. The result of the study show the performance improvement in the call loss ratio and load distribution in the group channel.

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Control Scheme of Emergency Power Supply for Elevator Emergency Call System (승강기의 비상 통화장치용 비상 전원장치의 충·방전 제어회로)

  • Park, Noh-Sik;Lee, Dong-Hee
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.29 no.8
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    • pp.40-48
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    • 2015
  • In this paper, battery charging and discharging circuit with a single voltage power supply is proposed. The proposed circuit has the separated current path and charging-monitoring sequence control scheme. In the charging sequence, the proposed 2-level comparator combined with control signal of the micro-processor can control the constant charging current to protect the over current of the battery. Furthermore, the proposed circuit uses a periodic main power switch control to detect the discharging characteristics to estimate the approximated battery life-time. In the experiments, the proposed emergency power supply for emergency call system has 89% efficiency with 98% power factor. And the proposed sequence control scheme is well operated in the designed emergency power system.

분산구조 교환기에서의 과부하 제어

  • Im, Seok-Gu;Guk, Gwang-Ho;Lee, Jae-Seop;Kim, Yeong-Si
    • ETRI Journal
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    • v.14 no.3
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    • pp.45-57
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    • 1992
  • 본 논문에서는 교환기나 분산구조형인 경우 통신망 전반에 걸쳐 발생하는 일반적인 과부하, 천재지변이나 비상사태에 의한 과부하, 특정번호에 통화가 집중되는 과부하 등과 같은 3가지 과부하 유형에 적합하고 착신호(입중계호와 중계호)를 발신호(자국호와 출중계호)에 비해서 가능한 많이 처리할 수 있는 효율적인 과부하 제어 방법을 제안하였으며 이의 타당성을 시뮬레이션에 의하여 입증하였다.

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Implementation of Safety management broadcasting system for IoT based in IP PBX (IP PBX기반 안전관리 IoT 방송 시스템 구현)

  • Kim, Sam-Taek
    • Journal of the Korea Convergence Society
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    • v.10 no.8
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    • pp.9-14
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    • 2019
  • Currently, with the success of 5G commercialization, a server system that integrates various Internet public safety services should be developed. In this paper, we developed a public safety integrated server, which is an IoT platform connecting IoT device and IoT gateway based on IP PBX. This server is based on embedded OS and various IoT services are executed in one system and call processing / broadcasting server function that processes emergency call and emergency broadcasting in public places is built in. This system collects IoT sensor data and emergency bell information and automatically sends out emergency alarms, emergency evacuation broadcasts, etc. at an accident site in an emergency situation, and transmits the daily information to the upper IoT service server, Provide public safety management services.

The Integrated Model of CCTV, Remote Control and Direct Call for the Elevator Safety based on Information Technology (IT기반 승강기안전을 위한 CCTV, 원격제어 및 직접통화장치 통합 모델)

  • Kim, Woon-Yong;Park, Seok-Gyu
    • Journal of Advanced Navigation Technology
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    • v.16 no.4
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    • pp.697-702
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    • 2012
  • With an elevator supply and demand increases, It has been enlarged various requirements for the safety of the elevator. Elevator safety requirements can be the ability to respond to emergencies quickly. Recently, QR code was attached to all elevator for the elevator safety and it is established by law for the Elevator rescue work. And also the elevator system is seeking to utilize more secure elevator with mandatory installation of CCTV and direct call devices. However, CCTV and direct call service is operating on an individual method and it has not been proposed integrated model. In this paper, we propose the safety elevator integration model with CCTV, direct call service and remote control based on smart phone. Using the proposed model, we can be improved the efficiency of maintenance and ability of prompt action in the event of a disaster.

Study on the mobile phone case for self-power generation (자가발전용 휴대폰 케이스에 관한 연구)

  • Kim, Jin Ho;Park, Chang Hyung;Han, Seung Chul
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.6
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    • pp.8-12
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    • 2017
  • This paper presents the mobile phone case for self-power generation and recharge for emergency calls or text messages at the discharge of a battery. If the user shakes his smart phone case, the interaction of electromagnetic coil and permanent magnet in an electric generator produces electric energy, which charges the lithium-ion battery. This enables the user to give a few calls or text messages. In addition, the vibration energy from humans walking at a frequency of 2 ~ 3Hz charges the battery. The electric generator was simulated using MAXWELL, a commercial electromagnetic analysis program, to analyze the electric power generation. Finally a prototype of the mobile phone case for self-power generation was built based on the analysis and its performance was verified.