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Wireless Sensor Network, 2010. IET-WSN. IET International Conference on

Date 15-17 Nov. 2010

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Displaying Results 1 - 25 of 74
  • Front cover

    Page(s): c1
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (97 KB)  

    The following topics are dealt with: wireless sensor network; distributed sensor design; data fusion; cooperative signal processing; fault tolerance; and network protocols. View full abstract»

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  • Contents

    Page(s): I - VI
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  • An energy-efficient wireless sensor network used for farmland soil moisture monitoring

    Page(s): 2 - 6
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (532 KB)  

    Collecting field soil moisture information is the foundation of auto-irrigation. This paper introduced a soil moisture monitoring wireless sensor network (WSN) and with application background of automatic drip irrigation for cotton field. Firstly, application background was analyzed and application requirements were defined. The system worked together with a drip irrigation system in cotton field. In the second part, the frame of the system was given. It was composed of battery-powered field sensor nodes, solar powered WSN-GPRS gateway and data manage server. Hardware structure of the sensor node was introduced in details. Theoretical foundation of the design was introduced. After study, it was found that the soil moisture in a certain size of area was very nearly, which lead to the possibility of network data compression. In the third part, a novel data compression algorithm was proposed. In the algorithm, all the sensor nodes were encoded with Morton code and a logical multi-lays cluster was constructed among the nodes. Making use of the similarity of the output of the sensor nodes, the power cost was reduced significantly and prolongs life of the network. A power saving mode was introduced which made the network have a good flexibility. More sensor nodes had little impact on the network as Greedy Perimeter Stateless Routing (GPSR) algorithm was used to routing data. At last, some test and experiments results were shown in diagrammatic form. The system was field tested over six month period (April 2009 to Oct. 2009) in Xin-jiang province of China. The experimental results demonstrated that large scale, long-term collecting of soil moisture information can be achieved by using our proposed system. View full abstract»

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  • Monitoring and control of terrestrial pipe cathode protection system based on wireless sensor network

    Page(s): 7 - 12
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (416 KB)  

    Cathode protection is often used to slow down the corrosion of terrestrial pipe. This paper aims to design and develop a system to monitor the terrestrial pipe cathode protection equipments, which can not only collect the potential information in time, but also fine-tune the guard mode of cathode protection on demand. This system integrates technology of wireless sensor networks and GPRS to collect potential data and realize remote data transmission. Mechanisms are adopted to effectively lower the energy assumption and to ensure reliability, such as work-on-duty, allowing for power saving in selection of hardware components, and using TDMA protocol to avoid collision. Trial running of the system has published good results with 96% or higher success ratio of data transmission and low power saving. In all, this system can meet the requirements of timely detecting physical exception of terrestrial pipeline and controlling wireless sensor networks on demand. View full abstract»

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  • Accurate vehicle monitoring based on wireless sensor network

    Page(s): 13 - 16
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (314 KB)  

    Wireless sensor networks have been proven to be attractive in vehicle monitoring. To apply wireless sensor network in vehicle monitoring, the fundamental problems, vehicle detection should be explored. To address this problem, challenges like strong noise disturbance, severely limited node resource, should be overcome. In this paper, we propose a CBNP algorithm to accurately detection vehicle presence. To apply cross-correlation in vehicle detection, we build a vehicle response model for cross-correlation calculation. Simulation indicates that the detection accuracy of the CBNP algorithm is as high as 90%. View full abstract»

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  • Supermarket shopping guide system based on Internet of things

    Page(s): 17 - 20
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (225 KB)  

    In this paper, a scheme of a smart supermarket shopping guide system(SSSGS) based on the technology of Internet of things is proposed. The most critical issue of SSSGS is product identification and information acquirement. This system combines electronic tag with identification technique in the Internet of things. The electronic tags are applied to the product identification. The wireless technique and identification methods are employed to transfer and determine the product information automatically. The function and properties of SSSGS are analyzed. The combination of the RFID network system and Zigbee network applications are investigated. Some middlewares in communication task and the system of the SSSGS are proposed. And also we discussed the problems and corresponding solutions that may occur in the system The system is a guidance on future shopping which makes it comfortable and enjoyable for clients. View full abstract»

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  • Design and implementation of a Prototype System of Ocean Sensor Web

    Page(s): 21 - 26
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (410 KB)  

    Referring to GEOSS Sensor Web Workshop and OGC-SWE standardisation, this paper presents the actual sensor network configuration for ocean observing system and the design&implementation of Ocean Sensor Web(OceanSW), which can be implemented to describe, organize, store and manage the ocean sensor data. The OceanSW system is represented in XML, which is easy to apply. And gives the details of Ocean Sensor Observation Service. On this basis, Ocean Sensor Web Prototype System based on Web Service is put forward, which aims to store and manage the ocean sensor observation data effectively. View full abstract»

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  • R2R: Data forwarding in large-scale bus-based delay tolerant sensor networks

    Page(s): 27 - 31
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (291 KB)  

    The deployment of short-range high bit rate radios on city buses enables a number of ubiquitous sensing applications. In this paper, we focus on data forwarding in such applications. We make an empirical study on traces from a real city bus system, where we try to explore unique features of the bus-based delay tolerant sensor networks (DTSN) that can affect the data forwarding. We carefully examine the encounter behaviors both at the bus-level and the route-level and show that the route-level encounter behaviors exhibit a trend that is quite predictable. Based on the finds, we propose a novel data forwarding scheme named R2R (Route-to-Route) which leverages the route-level encounter frequency as the metric to plan a path for each message. Then, each message is forwarded along the planned path to a destination route. Trace-driven emulations are developed to evaluate the proposed R2R, in which we compare it with several schemes. We show that R2R achieves a good performance in message delivery rate and buffer consumption. View full abstract»

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  • Study on ZigBee network-based monitoring data transmission of power line

    Page(s): 33 - 37
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (166 KB)  

    There are many problems should be solved in long chain-like ZigBee network which is used to monitor power transmission line, such as the funnel effect of sink node, and the competition of communication between nodes and large data transmission delay caused by enhancing the transmitting power of sensor nodes, this paper provides a method to solve the above-mentioned problems. It is through the multi-sink node cooperation to solve the bottleneck problem, and process the competition of communication between nodes by channel adjustment. Finally, the paper analyzed the method and provided simulation experiment results. Simulation results show that the method can not only solve the funnel effect of the sink node, but also has a good real-time. View full abstract»

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  • Intravenous infusion monitoring system based on WSN

    Page(s): 38 - 42
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (530 KB)  

    Reviewing various treatment plans, the progress and velocity of intravenous infusion must be strictly controlled. Undeniable, present artificial monitoring methods not only increase the burden of patients, relatives and medical staff, but are vulnerable to lead oversight as well. This paper presents the design and implementation of a novel wireless sensor network for intravenous infusion monitoring based on slot-coupled infrared emitting diode as sensors, chip ATMEGE128L as MCU and chip CC2420 as ZigBee-based RF communication. The system has following characteristics: non-touch droplet monitor, easy to reuse, multiple protections on system accuracy and reliability, easy to integrate with existing hospital management system due to flexible design of the host computer software, low cost, and easy to launch large-scale applications. View full abstract»

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  • A trajectory smooth control strategy based on shunting model

    Page(s): 43 - 46
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (87 KB)  

    The method of virtual force is effective for the self-organizing of wireless sensor networks. But when the network topology event occurs, it would change the network topology. Because of the discontinuity of the force among the nodes, the trajectories of the nodes will be not smooth. In response to this problem, combining biological neural shunting model, we proposed a model smooth control strategy based on self organized streaming path. Because the output of shunting model is stable, bounded and smooth, combing the shunting model with the virtual force will effectively solve the problem of roughness of node trajectory in the self-organizing of sensor network. Simulation research and comparative analysis show the effectiveness of this algorithm. View full abstract»

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  • Sensorworld - A simulator for resource-bounded intelligence

    Page(s): 47 - 52
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (176 KB)  

    Within this paper, Sensorworld is proposed as a platform for the evaluation and comparison of resource-bounded intelligence, and its effectiveness is proven through the implementation of a series of simulations on effectiveness, utility and energy consumption on bold, cautious and energy-aware agents. View full abstract»

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  • Vulnerability of Bluetooth to impulsive noise in Electricity transmission substations

    Page(s): 53 - 58
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1080 KB)  

    Vulnerability of Bluetooth receiver to impulsive noise has been assessed in this paper. Impulsive noise environment of an Electricity transmission substation environment is modelled as a Symmetric Alpha Stable process. Parameters of the model are estimated from the measurements carried out in control room of an electricity transmission substation. View full abstract»

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  • Multi-odor Sources Localization and tracking with wireless sensor network and mobile robots

    Page(s): 60 - 65
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (298 KB)  

    Localizing and tracking multiple static/moving odors in a real-time manner is a very difficult problem in the field of security. In this paper a solution has been proposed for the problem by using the integration of mobile robots and a static wireless sensor network. A multi-odor recognition algorithm is designed to identify and separate various sources. The static odor localization and moving odor tracking approach is provided, and the interaction method among the robot team and sensor network is analyzed. This solution is capable of separating individual odor sources and estimating the positions and speeds of multi-odor sources. The traditional GPSR routing protocol is modified to improve the network transmission performance. Simulation results show that the solution has good localization and tracking ability, and can be applied to industry and military fields. View full abstract»

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  • Research of WSNS coverage in coal mine based on GNG-Like intelligent algorithm

    Page(s): 66 - 68
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (93 KB)  

    Coverage in wireless sensor networks (WSNs) is treated as a key technology for many monitoring applications. A novel sensor node's model is presented based on the neural network because the exiting models are not feasible in the special coal mine environment. In addition, we provide an improved intelligent algorithm GNG-Like(Growing Neural Gas-Like), taking into consideration application-special requirements and energy-conservation characteristics, which is applied into the coal mine to study the dynamic coverage in the inspection field. In GNG-Like, threshold is set and corresponding parameters are modified to achieve fast response and coverage for the changing environment in coal mine. We simulate GNG-Like algorithm in the Java platform and compare it to GNG intelligent algorithm. Simulation results show that, compared with the exiting GNG, GNG Like has a faster reaction rate, achieves optimize dynamic coverage and prolongs the network lifetime. View full abstract»

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  • Immune system based redeployment scheme for wireless sensor networks

    Page(s): 69 - 72
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (73 KB)  

    This paper researches the redeployment scheme for wireless sensor networks that consists of mobile sensor nodes and its nodes random deployment at first, and proposes an artificial immune systems based method to the problem that how to determine a movement plan for the sensor nodes in order to maximize the network coverage and minimize the total distance of sensors moving. The method proposed in this paper contains following steps; first, calculate the optimal positions for sensors according to the application requirements; then using AIS based method to calculate the appropriate positions for sensors to redeploy. In AIS based solution, the antibody is the assignment between nodes and optimal positions; the affinity is the total distance of mobile nodes moving. The simulation results show that the AIS based redeployment scheme (AISRD) can provide a shorter convergence time and less of the total distance than the genetic algorithm (GA) based scheme. View full abstract»

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  • Deployment patterns for k-coverage and l-connectivity in Wireless Sensor Networks

    Page(s): 73 - 77
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (996 KB)  

    In this paper, the patterns for k-coverage (2≤k≤4) based on optimal /-connectivity (3≤/≤6) patterns are deeply discussed and a series of deployment patterns for k-coverage and I-connectivity are proposed under different ratios of sensor communication range (denoted by Rc) over sensing range (denoted by Rs) for Wireless Sensor Networks (WSNs). The patterns proposed are based on regular graphs and have precise thresholds that discriminate different k-coverage and I-connectivity when Rc/Rs≤1. Also, the mathematical operations of MAPN (Maximum Area per Node) in all patterns are described in the paper. In the end, comparison graphs of coverage rate for each pattern are illustrated and different values of k and I in k-coverage and I-connectivity's coverage varying rates could be observed. View full abstract»

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  • An accurate and adaptive pedometer integrated in mobile health application

    Page(s): 78 - 83
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1521 KB)  

    An interesting and valuable application in sensor network technology is Personalised Rehabilitation. In particular, through the combination of a smart phone and wearable sensors, patients can follow and have feedback on their exercise programmes, while enhancing the medical monitoring. In this paper, we design a system to measure the patient's activity by estimating his walking habits. The system, ready to be integrated in a mobile health application, consists of an inertial sensor with a tri-axial orthogonal accelerometer attached to patient's foot, while the sensor is connected to a smart phone for data processing. Additionally, we propose an algorithm for step detection and gait state estimation. The challenge is to provide reliable and accurate detection when pacers are in different gait states. Also, the algorithm will reduce error drifts at start moment when sensor signals are very unstable. Extensive experiment results will demonstrate that the algorithm provides good performance in terms of accuracy, adaptability and memory use. View full abstract»

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  • A realistic Mobility Model for urban traffic scenario in Vehicular Delay Tolerant Network

    Page(s): 84 - 88
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (302 KB)  

    The vehicular mobility models have great significance and serious effect on simulation of Vehicular Delay Tolerant Networks. Most of the existing vehicular mobility models can be classified into synthetic mobility models. Though being widely applied, they do not properly reproduce complex urban traffic environment. To improving the vehicular mobility model's reality, this paper analyzed real-world vehicular trace and proposed Real Trace Vehicular Mobility Model with introducing of the traffic flow theory. This model incorporated resident area and more realistic speed rule. On this basis, the further analysis of the proximity of the model, the statistical characteristic and the network connection characteristic are given in this paper. The simulation results show that the proposed model can properly approximate the actual vehicular behaviour in urban traffic scenario. View full abstract»

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  • A fully integrated SoC for large scale wireless sensor networks in 0.18µm CMOS

    Page(s): 90 - 94
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (201 KB)  

    A fully integrated system-on-chip (SoC) intended for use in large scale wireless sensor networks is built in 0.18um CMOS. All of building blocks including embedded microprocessor ARM7TDMI, baseband modem, radio transceiver, ADC/DAC, temperature sensor and some communication ports have been integrated into a single chip. The baseband modem adopts BPSK/QPSK DSSS modulation, which symbol rate and processing gain are optional. The radio transmitter utilizes the direct modulation scheme while the receiver is based on Low-IF architecture which Rx sensitivity can achieve -92dBm. The temperature sensor on chip can provide a resolution of 0.15°C from -55°C to + 130°C with an error of less than 0.7°C. View full abstract»

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  • Design of color temperature measurement device based on TCS230

    Page(s): 95 - 97
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    A portable color temperature measurement device based on TCS230 is introduced in the paper. The principle of temperature measurement is discussed . The hardware and software implementation of the system are explained in detail, and test results are given. View full abstract»

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  • The implement of warehouse Management system based on RFID and Wireless Sensor Network

    Page(s): 98 - 103
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (242 KB)  

    Radio Frequency Identification (RFID) and Wireless Sensor Network (WSN) are two important wireless technologies for pervasive systems. Both of them have deployed in many areas. RFID and WSN, have their own advantages, are always deployed respectively. Integration of RFID and WSN is given little attention. In this paper, the system integrated RFID and WSN is designed. The Management software is also implemented. This flexible prototype is applied in warehouse to verify the feasibility. View full abstract»

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  • EasiTest: A multi-radio testbed for heterogeneous wireless sensor networks

    Page(s): 104 - 108
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (386 KB)  

    In this paper, we propose EasiTest, a multi-radio testbed for heterogeneous wireless sensor networks (WSN). Two types of sensor nodes, specifically, high speed multi-radio node (EZ271) and low speed single radio node (EZ521) are developed. An administration platform is provided to monitor and control the testbed. EasiTest enjoys high flexibility, powerful processing capability and ease of expansion. EasiTest provides a powerful tool not only for the study and evaluation of large scale, heterogeneous sensor networks, but also for quick prototyping of practical WSN applications. To demonstrate the capability of the testbed, we study the co-existence problem of IEEE 802.11 and IEEE 802.15.4. Guidelines are given on channel allocation and network parameter configuration to minimize the interference. View full abstract»

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  • Design of ZigBee-based wireless control system of circulating water concentration ratio

    Page(s): 109 - 112
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (939 KB)  

    This article introduced the wireless sensors and wireless actuators combined of ZigBee wireless transmission with sensor or actuator, and its application in circulating water concentration rate control system. Starting with the system topology, it introduced the CC2430 microcontroller and ZigBee features detailed design process of hardware and software in the system, including interface circuit, and each part initial setup, data acquisition and control, and a detailed discussion system design problems. View full abstract»

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  • Using wireless sensor networks for industrial monitoring

    Page(s): 113 - 121
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    In order to save time and reduce systems failures this paper examines use of wireless sensor for monitoring industrial applications for enhanced Supervisory Control and Data Acquisition (SCADA) Systems where a new model establishes interconnection between sensor node is proposed and optimal inter-sensor distance with respect to their signal level are investigated. The wireless communication systems are used for exchanging messages between technicians and the corresponding emergency service points through structured messages. The test result obtained from a field trial with the result showing determining maximum allowable free space loss can be determined between the interval of 0-13 metres apart. View full abstract»

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