• Title/Summary/Keyword: Smart Monitoring

Search Result 1,860, Processing Time 0.034 seconds

Indoor Gas Monitoring System Using Smart Phone Application (스마트폰 어플리케이션을 이용한 실내 가스 모니터링 시스템)

  • Choi, Sung-Yeol;Choi, Jang-Sik;Kim, Sang-Choon
    • Convergence Security Journal
    • /
    • v.12 no.1
    • /
    • pp.49-54
    • /
    • 2012
  • Special applications designed for smart phone, so called "Apps" are rapidly emerging as unique and effective sources of environmental monitoring tools. Using the advantages of Information and Communication Technology (ICT), this paper propose an application that provides Indoor Gas Monitoring System. In this paper, use four wireless gas sensor modules to acquire sensors data wirelessly coupled with the advantages of existing portable smart device based on Android platform to display the real-time data from the sensor modules. Additionally, this paper adapts a simple gas classification algorithm to inform in-door Gas for users real-time based.

Development of Smart Sensor for Diagnosis/Monitoring of Concrete Structure (콘크리트 구조물 진단/감시용 스마트센서 개발)

  • Yun Dong-Jin;Lee Young-Sup;Lee Sang-Il;Kwon Jae-Hwa
    • Proceedings of the Computational Structural Engineering Institute Conference
    • /
    • 2006.04a
    • /
    • pp.21-28
    • /
    • 2006
  • Structural health monitoring (SHM) is a new technology that will be increasingly applied at the industrial field as a potential approach to improve cost and convenience of structural inspection. Recently, the development of smart sensor is very active for real application. This study has focused on preparation and application study of SAL sensor. In order to detect elastic wave, smart piezoelectric sensor, SAL, is fabricated by using a piezoelectric element, shielding layer and protection layer. This protection layer plays an important role in a patched network of distributed piezoelectric sensor and shielding treatment. Four types of SAL sensor are designed/prepared/tested, and these details will be discussed in the paper. In this study, SAL sensor can be feasibly applied to perform structural health monitoring and to detect damage sources which result in elastic waves.

  • PDF

Radiation Monitoring Smart Content System of Android ICS-based (안드로이드 ICS 기반 방사선 모니터링 스마트 콘텐츠 시스템)

  • Choi, Jin-Sang;Park, Sung-Hyun;Ban, Tae-Hak;Jung, Hoe-Kyung
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2013.05a
    • /
    • pp.938-940
    • /
    • 2013
  • According to the increasing concern for the safety management of nuclear power plants, the growing need for the development of a monitoring system for the management. Smart revolution sparked the evolution of wireless networks and the spread of smart phones, smart pads and mobile-centric, as well as the change of life, injury, industrial growth, and the Internet economy. In this paper, a fusion of the latest smart technology to meet the traditional nuclear industry in the era of the smart revolution, radiation safety management system is proposed to Content Basic imaging and dose output data in real time, and provides basic monitoring functions required to manage the radiation safety.

  • PDF

Autonomous smart sensor nodes for global and local damage detection of prestressed concrete bridges based on accelerations and impedance measurements

  • Park, Jae-Hyung;Kim, Jeong-Tae;Hong, Dong-Soo;Mascarenas, David;Lynch, Jerome Peter
    • Smart Structures and Systems
    • /
    • v.6 no.5_6
    • /
    • pp.711-730
    • /
    • 2010
  • This study presents the design of autonomous smart sensor nodes for damage monitoring of tendons and girders in prestressed concrete (PSC) bridges. To achieve the objective, the following approaches are implemented. Firstly, acceleration-based and impedance-based smart sensor nodes are designed for global and local structural health monitoring (SHM). Secondly, global and local SHM methods which are suitable for damage monitoring of tendons and girders in PSC bridges are selected to alarm damage occurrence, to locate damage and to estimate severity of damage. Thirdly, an autonomous SHM scheme is designed for PSC bridges by implementing the selected SHM methods. Operation logics of the SHM methods are programmed based on the concept of the decentralized sensor network. Finally, the performance of the proposed system is experimentally evaluated for a lab-scaled PSC girder model for which a set of damage scenarios are experimentally monitored by the developed smart sensor nodes.

A Study on the Framework Construction of Disaster Monitoring and Transmitting System based on Smart-Phone (스마트 폰(Smart-Phone)기반의 재난 감시 및 상황전달시스템 프레임워크(Framework) 구축에 관한 연구)

  • Jeong, Duk-Hoon;Min, Geum-Young;An, Chang-Keun;Lee, Hoon-Seok
    • Journal of the Korea Safety Management & Science
    • /
    • v.13 no.2
    • /
    • pp.31-42
    • /
    • 2011
  • Smart-Phones are utilized in disaster management field because it can deliver disaster information to large population simultaneously and quickly, and provide accurate information through situation-based service using the LBS(Location Based Service). To study on the utilization of smart phone for disaster information collection and dissemination method, this study suggest a framework which connects smart phone by loading application for reporting disaster. The disaster monitoring and situation dissemination system framework using smart phone is composed of 4 parts. First, smart phone application enters image, video, voice and text information and location of the disaster. Second, the disaster report reception and situation dissemination server receives the information, save in the DB, and send through smart phone SMS. Third, store into disaster information database. Fourth, display the disaster report and management information on 2D GIS, support the decision making process in deciding whether to manage as disaster, and disaster management web service which disseminates situation.

Load Balancing Scheme between Agents and Smart Objects for Real-Time Monitoring System of Ubiquitous Smart Space (실시간 유비쿼터스 지능공간 모니터링 시스템을 위한 에이전트와 스마트 객체 간의 부하 분산 기법)

  • Chung, Hong-Kyu;Lee, Dong-Wook;Kim, Jai-Hoon
    • Journal of KIISE:Computing Practices and Letters
    • /
    • v.16 no.4
    • /
    • pp.447-451
    • /
    • 2010
  • Monitoring and analyzing the status of smart objects, the ubiquitous smart monitoring system provides several information such as user-state index, service states and system operation among the services in real time. It also provides self-optimization and self-management for enhancing the performance of services. In order to expand the application scope of this real-time monitoring system, it is indispensible to process huge amount of stream data. In this paper, we propose a load balancing scheme to solve the overload of the monitoring agents. Our proposed scheme reduces deadline miss ratio of entire data by more than 80%.

Structural Health Monitoring System Employing Smart Sensor Technology Part 1: Development and Performance Test of Smart Sensor (스마트 센서 기술을 이용한 구조물 건전도 모니터링 시스템 Part I : 스마트 센서의 개발과 성능평가)

  • Heo, Gwang Hee;Lee, Woo Sang;Kim, Man Goo
    • Journal of the Korea institute for structural maintenance and inspection
    • /
    • v.11 no.2
    • /
    • pp.134-144
    • /
    • 2007
  • In this study, a smart sensor unit is developed by using the smart sensor technology that is being rapidly developed in recent years for structural health monitoring system, and its performance is evaluated through various experiments, and also, damage detection experiment is performed on a model structure. This paper as the first half of this study contains the development and performance evaluation of the smart sensor. In the latter half of this study, structure damage detection experiment is performed for the application of verified smart sensor unit into structural health monitoring, and it is compared with a wire measurement system. The smart sensor is developed by using high-power wireless modem, MEMS Sensor and AVR microcontroller, and an embedded program is also developed for the control and operation of the sensor unit. To verify the performance of the smart sensor, many experiments are performed for sensitivity and resolution analysis tests, data acquisition by using cantilever beam and shaker, and on-site application using actual bridge. As a result, the smart sensor proves to be satisfactory in its performance.

The Application of Piezoelectric Materials in Smart Structures in China

  • Qiu, Jinhao;Ji, Hongli
    • International Journal of Aeronautical and Space Sciences
    • /
    • v.11 no.4
    • /
    • pp.266-284
    • /
    • 2010
  • Piezoelectric materials have become the most attractive functional materials for sensors and actuators in smart structures because they can directly convert mechanical energy to electrical energy and vise versa. They have excellent electromechanical coupling characteristics and excellent frequency response. In this article, the research activities and achievements on the applications of piezoelectric materials in smart structures in China, including vibration control, noise control, energy harvesting, structural health monitoring, and hysteresis control, are introduced. Special attention is given to the introduction of semi-active vibration suppression based on a synchronized switching technique and piezoelectric fibers with metal cores for health monitoring. Such mechanisms are relatively new and possess great potential for future applications in aerospace engineering.

Smart Concrete Structures with Optical Fiber Sensors

  • Kim, Ki-Soo
    • KCI Concrete Journal
    • /
    • v.11 no.3
    • /
    • pp.109-114
    • /
    • 1999
  • Recently the interest in the safety assessment of civil infrastructures has increased. As bridge structures become large-scale, it is necessary to monitor and maintain the safety of large bridges, which requires smart systems that can make long-term monitoring a reality . Civil engineers have applied monitoring systems to several bridges, such as the New Haeng-Ju Bridge and Riverside Urban Highway Bridge, but these applications have some problems with the sensors for long-term measurement, setup techniques for the bridge monitoring system and the assessment of measured data. In the present study, an optical fiber sensor smart system was tested and confirmed in laboratory tests on the concrete members. By Attaching optical fiber sensors to the structural parts of the Sung-San Bridge, the bridge load test was measured. These smart concrete structure systems can be applied to bridges and the load capacity of the bridge can assessed.

  • PDF

Design and Implement of Smart Gateway Interface API for Real-time Monitoring in Smart Factory (스마트 팩토리에서 원격 실시간 모니터링을 위한 게이트웨이 인터페이스 연동 API 설계 및 구현)

  • Jeon, Dong-cheol;Lee, Byung Mun;Hwang, Heejoung
    • Journal of Korea Multimedia Society
    • /
    • v.22 no.5
    • /
    • pp.601-612
    • /
    • 2019
  • As the $4^{th}$ industrial revolution is accelerating, IT convergence application technologies are attracting attention in various fields. In the manufacturing industry, Smart Factory technology, which is blended with IT technology, has been developed to solve the problem casued by the decrease of the labor force, and a monitoring server is required to remotely control the equipment or to inquire about the operation status of the factory. In this paper, we designed and implemented RESTful API for data sharing between factory equipment and monitoring server in Smart Factory. In order to verify the designed API, a testbed was operated for an actual plastics manufacturing plant. As a result, it was confirmed that the testbed can be operated normally in actual operating environment.