• Title/Summary/Keyword: sensor network

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Design of Wired and Wireless linkage Hybrid Sensor Network Model over CATV network (CATV망을 이용한 유무선 연동의 하이브리드 센서 네트워크 모델 설계)

  • Lee, Kyung-Sook;Kim, Hyun-Deok
    • Convergence Security Journal
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    • v.12 no.3
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    • pp.67-73
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    • 2012
  • In this paper, in order to overcome the disadvantage of wireless-based sensor network, a hybrid sensor network using wired and wireless linkage is proposed. Proposed a wired and wireless linkage hybrid sensor network can compensate the defect of poor transmission at the indoor wireless environment, and can be free from interference between a wireless LAN and Bluetooth of the same frequency bandwidth due to an attribute of low-loss transmission at the CATV network. Also, proposed a wired and wireless linkage hybrid sensor network make use of CATV network which is well-built infrastructure, is more efficient to design network, assure a stability and high reliability of the sensor network as providing a stability for an inaccuracy and a predictable transmission link for the existing wireless network.

Wireless sensor network design for large-scale infrastructures health monitoring with optimal information-lifespan tradeoff

  • Xiao-Han, Hao;Sin-Chi, Kuok;Ka-Veng, Yuen
    • Smart Structures and Systems
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    • v.30 no.6
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    • pp.583-599
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    • 2022
  • In this paper, a multi-objective wireless sensor network configuration optimization method is proposed. The proposed method aims to determine the optimal information and lifespan wireless sensor network for structural health monitoring of large-scale infrastructures. In particular, cluster-based wireless sensor networks with multi-type of sensors are considered. To optimize the lifetime of the wireless sensor network, a cluster-based network optimization algorithm that optimizes the arrangement of cluster heads and base station is developed. On the other hand, based on the Bayesian inference, the uncertainty of the estimated parameters can be quantified. The coefficient of variance of the estimated parameters can be obtained, which is utilized as a holistic measure to evaluate the estimation accuracy of sensor configurations with multi-type of sensors. The proposed method provides the optimal wireless sensor network configuration that satisfies the required estimation accuracy with the longest lifetime. The proposed method is illustrated by designing the optimal wireless sensor network configuration of a cable-stayed bridge and a space truss.

Design and fabrication of IEEE-802.15.4 protocol based universal sensor node platform with good extensity (확장성이 고려된 IEEE-802.15.4 기반의 저전력 범용 센서노드 설계 및 제작)

  • Chung, Wan-Young;Shin, Kwang-Sig;Jang, Sung-Gyun
    • Journal of Sensor Science and Technology
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    • v.16 no.4
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    • pp.247-253
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    • 2007
  • Low power consumption sensor network platform (sensor node) for sensor networking with IEEE 802.15.4 protocol was fabricated. The sensor node used ceramic bar type antenna for increasing RF signal performance and decreasing PCB size occupied by antenna. The communication range of the fabricated sensor node was about $20{\sim}30$ m in open environment with 915 MHz frequency bandwidth and well supported by Tiny OS. The sensor node have good connectivity with various external devices by RS-232, I2C, analogue and digital expansion board, hence, this sensor node can be applied to various applications in wireless sensor network and ubiquitous sensor network.

Extending Sensor Registry System Using Network Coverage Information (네트워크 커버리지를 이용한 센서 레지스트리 시스템 확장)

  • Jung, Hyunjun;Jeong, Dongwon;Lee, Sukhoon;Baik, Doo-Kwon
    • KIPS Transactions on Software and Data Engineering
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    • v.4 no.9
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    • pp.425-430
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    • 2015
  • The Sensor Registry System(SRS) provides sensor metadata to a user for instant use and seamless interpretation of sensor data in a heterogeneous sensor network environment. The existing sensor registry system cannot provide sensor metadata in case that the network connection is not available or is unstable. To resolve the problem, this paper proposes an extension of sensor registry system using network coverage information. The extended system sends a set of sensor metadata to the user by using network coverage open data (mobile vendors, signal strength, communication type). The extended SRS proposed in this paper supports a safer sensor metadata provision than the existing SRS, and it thus improves the quality of application services.

The proposal of the energy efficiency sensor network using directional antennas (방향성 안테나를 이용한 에너지 효율적인 센서 네트워크의 제안)

  • Kim, Kyung-Kuen;Jung, Won-Soo;Oh, Young-Hwan
    • Proceedings of the KIEE Conference
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    • 2007.10a
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    • pp.351-352
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    • 2007
  • The sensor networking technique as the radio network which does not have the base infrastructure network. The sensor nodes oneself automatic compose the network and simultaneously accomplish two roles of the router and data source. The sensor network is kind of Ad-hoc network is a possibility of seeing from point. sensor networking technique is restricted that limit of the memory and the battery back with the resources of the node. The sensor nodes overcomes the restriction of the resources it is in the process of researching the multi-hop routing technique which the sensor network divided cluster routing techniques which are researched. this paper proposed using beamforming antenna which has the directivity of the electric wave. the beamforming antenna from the Ad-hoc network using technique. the proposal is that raises the efficient of data trans mission from the sensor network and extends the lift time of the sensor network.

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Tree-based Deployment Algorithm in Mobile Sensor Networks (이동 센서 네트워크에서 트리 기반의 배치 알고리즘)

  • Moon, Chong-Chun;Park, Jae-Hyun
    • Journal of Institute of Control, Robotics and Systems
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    • v.12 no.11
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    • pp.1138-1143
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    • 2006
  • Sensor deployment is an important issue in the mobile wireless sensor network. In this paper, we propose a deployment algorithm for mobile sensor network to spread out mobile sensor nodes widely as well as regularly. Since the proposed algorithm uses tree topology in deploying the sensor nodes, calculating power as well as spreading speed can be reduced compare to other deployment algorithms. The performance of the proposed algorithm is simulated using NS-2 simulator and demonstrated.

MAP : A Balanced Energy Consumption Routing Protocol for Wireless Sensor Networks

  • Azim, Mohamed Mostafa A.
    • Journal of Information Processing Systems
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    • v.6 no.3
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    • pp.295-306
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    • 2010
  • Network lifetime is a critical issue in Wireless Sensor Networks (WSNs). In which, a large number of sensor nodes communicate together to perform a predetermined sensing task. In such networks, the network life time depends mainly on the lifetime of the sensor nodes constituting the network. Therefore, it is essential to balance the energy consumption among all sensor nodes to ensure the network connectivity. In this paper, we propose an energy-efficient data routing protocol for wireless sensor networks. Contrary to the protocol proposed in [6], that always selects the path with minimum hop count to the base station, our proposed routing protocol may choose a longer path that will provide better distribution of the energy consumption among the sensor nodes. Simulation results indicate clearly that compared to the routing protocol proposed in [6], our proposed protocol evenly distributes the energy consumption among the network nodes thus maximizing the network life time.

MEM Temperature and Humidity Network Sensor for Wire and Wireless Network (유무선 통신용 MEMS 온습도 네트워크 센서)

  • Jung, Woo-Chul;Cha, Boo-Sang
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2006.06a
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    • pp.360-361
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    • 2006
  • This paper describes a wire and wireless network sensor for temperature and humidity measurements. The network sensor comprises PLC(Power Line Communication) and RF transmitter(433MHz) for acquiring an internal (on-board) sensor signal, and measured data is transmitted to a main processing unit. The network sensor module is consist of MEMS sensor, 10-bit A/D converter, pre-amp., gain-amp., ADUC812 one chip processor and PLC/RF transmitting unit. The temperature and humidity sensor is based on MEMS piezoelectric membrane structure and is implemented by using dual function sensor for smart home and smart building.

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Research on Wireless Sensor Networks Security Attack and Countermeasures: Survey (무선 센서 네트워크 보안 위협 및 대응책 연구)

  • Hong, Sunghyuck
    • Journal of Convergence Society for SMB
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    • v.4 no.4
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    • pp.1-6
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    • 2014
  • A wireless sensor network is being actively researched around the world that are connected to the mesh are a plurality of sensor nodes in a wireless manner that span different regions of the techniques. However, wireless communications use the limitation of resources, so it is very weak due to the properties of the network itself secure in comparison to the normal network. Wireless sensor network is divided into tapped-based attacks, forgery based attacks, denial of service attacks based largely by securities laws must defend against various attacks such as insertion of the wrong information being sent eavesdropping or modification of information, which is usually sensor network applications need to do. The countermeasure of sensor network attack is described in this research, and it will contribute to establish a secure sensor network communication.

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Routing protocol Analysis in Low Power Sensor Network For Energy Efficiency (에너지 효율성을 고려한 저 전력 센서 네트워크에서의 라우팅 프로토콜 분석)

  • Kim, Dong-il
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2014.05a
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    • pp.777-780
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    • 2014
  • The sensor network technology for core technology of ubiquitous computing is in the spotlight recently, the research on sensor network is proceeding actively which is composed many different sensor node. The major traffic patterns of plenty of sensor networks are composed of collecting types of single directional data, which is transmitting packets from several sensor nodes to sink node. One of the important condition for design of sensor node is to extend for network life which is to minimize power-consumption under the limited resources of sensor network. In this work, we analysis adapted routing protocols using the network simulation that was used exiting network and network provider needs will be able to solve the problem.

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