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IMPLEMENTATION OF LABVIEW BASED PACKET LOGGER FOR ZIGBEE NETWORK

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IMPLEMENTATION OF LABVIEW BASED PACKET LOGGER FOR ZIGBEE NETWORK Powered By Docstoc
					                                  B. Udaya Kumar et. al. / International Journal of Engineering Science and Technology
                                                                                             Vol. 2(8), 2010, 3391-3395


        IMPLEMENTATION OF LABVIEW
      BASED PACKET LOGGER FOR ZIGBEE
                NETWORK




                                                                                                             S
                                                  B. UDAYA KUMAR




                                                                         ES
                                 Department of Electronics & Instrumentation Engineering,
                                            GITAM University, Rushikonda,
                                      Visakhapatnam, Andhra Pradesh 530045, India

                                                      B. VENKAT




                                                                       PR
                                 Department of Electronics & Instrumentation Engineering,
                                             GITAM University, Rushikonda,
                                      Visakhapatnam, Andhra Pradesh 530045, India

                                                    Dr. D.S.MURTY
                                 Department of Electronics & Communication Engineering,
                                       GVP College of Engineering, Madhurwada,


    Abstract:
                                                     IN
                                      Visakhapatnam, Andhra Pradesh 530045, India


    ZigBee is a wireless technology being deployed for wireless sensor networks. Low data rate personal area network
    applications like smart home automation, greenhouse monitoring and healthcare use ZigBee, a high level
    communication protocol as a standard to acquire the data. The data from the sensor nodes are monitored and logged
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    using packet sniffer. The available sniffers in the market need additional hardware with dedicated software which
    costs more. Also the packet sniffer has to be compatible with the sensor node hardware. In this paper, sniffing of
    packets at the base station is implemented using LabView. With Texas Instruments Z-Accel Modules, a tree
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    topology is established and temperature is monitored, logged with time stamping and packet data analysis is
    presented.
    Keywords: ZigBee; Wireless Sensor Networks; cc2480 radio.

    1.   Introduction
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    Wireless technologies have been rapidly developed during recent years used in applications like smart home
    automation, greenhouse monitoring, and healthcare [1]. The existing technologies are Bluetooth, Wi-Fi, Wi-Max,
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    wireless mobile Ad-hoc network (WMANET), UMB, wireless HART, Bluetooth and ZigBee. Wireless sensor
    networks are formed by communicating over wireless links without using a fixed networked infrastructure. ZigBee
    is the name for a short-range, low-power, low-cost, and low-data-rate wireless multi-hop networking technology
    standard. A ZigBee network consists of three types of logical devices viz. coordinator (Full Function Device, FFD),
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    router and an end device (Reduced Function Device, RFD) [3].
    The coordinator is the first device on the network which starts, configures and manages the network [5]. This also
    selects the network identifier which is the Personal Area Network (PAN ID) and one amongst the 16 channels in the
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    range of 2.4-2.4835GHz. When the coordinator is ready, the other devices can join this network. ZigBee supports
    various network topologies such as star, peer-to-peer, cluster tree and mesh [2].This paper presents the establishment
    of a ZigBee network with a tree topology, monitoring and logging of packet data using Labview.




    ISSN: 0975-5462                                                                                                 3391
                                      B. Udaya Kumar et. al. / International Journal of Engineering Science and Technology
                                                                                                 Vol. 2(8), 2010, 3391-3395

    2.    Experimental setup and network establishment

     The experimental setup is as shown in the figure 1. The network is established using Texas Instruments Z-accel
     module where ZigBee Stack runs on a ZigBee Processor and the application runs on an external microcontroller [4].
     The sensor node hardware is embedded with an application processor (Microcontroller MSP430F2214) and a




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     ZigBee processor (CC2480 ZigBee processor).

                                                                                                      C-Coordinator




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                                                                                                      R-Router-source
                                                                                     C                E-End device



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                                                                      E        E         E        E
             Figure 1 Experimental Setup                             Figure 2 Tree network topology


     The application processor configures the CC2480 as a FFD or RFD using Application Program Interface (API) calls
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     and Remote Procedure Calls (RPC). The API calls provides the necessary functions to establish a ZigBee wireless
     sensor network [8]. After the configuration procedure, each device registers with the application profile. An
     application profile defines the input, output commands and data format exchanges between the devices on the
     network. The application software binds the devices with a logical link at the application layer. With the binding
     feature, the application transfers the data packet without knowing the actual destination address[9].The sensor node
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     has on chip temperature sensor, measures the temperature and periodically sends the data to the base station.

     The network topology, shown in figure 2, is considered for experimentation. The network consists of one
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     coordinator and two router- sources and four end devices.

    3.   Nodes Software Design

     The application software comprises of a source and a sink. The source transmits the temperature data and sink
     receives it. The flow charts for coordinator, router and end device are as shown in figures 3, 4, 5 respectively.
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     The packets arrive at the base station through a Virtual COM port which is read using LabView .The block diagram
     of the VI implemented for one node is as shown in the figure 6.
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     ISSN: 0975-5462                                                                                                    3392
                                             B. Udaya Kumar et. al. / International Journal of Engineering Science and Technology
                                                                                                        Vol. 2(8), 2010, 3391-3395




                  Power up device                                Power up device                           Power up device




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                                               No                                                                                    No
                       Button                                         Button                    No              Button
                     pressed for                                    pressed for                               pressed for
                                                                      Once?                                     twice?




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                       Once?



                           Yes                                             Yes                                       Yes


                     Send                                          Send                                        Send
           ZB_WRITE_CONFIGURATION                        ZB_WRITE_CONFIGURATION                      ZB_WRITE_CONFIGURATION
                  Coordinator                                  Router -Source                               End Device




                                                                                            PR
             Register Application profile                  Register Application profile               Register Application profile




            Send Permit Join Request and                      Bind with Coordinator
                                                                 IN                                     Bind with near Router
                  Allow Binding                           and allow other devices to join




                                                                                                        Send Data periodically
            Wait for other devices to join
                                                                      Bind                      No
                                                                    Confirmed
                                                                                                       Figure 5 End Device
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                                               No
                       Is Any
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                       Device                                                 Yes
                       Joined
                                                                      Send Data



                           Yes
                                                           If any child joined then route the
              Receive data and process                                    data
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                   Figure 3 Coordinator                                 Figure 4 Router
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    Using the event driven programming technique in LabView, the packet received at base station is stored in an array.
    The length of array is based on the size of the packet. A 17 byte packet arrives the virtual com port every 15sec from
    each node. The packet consists of parameters like Start of Packet (SoP), source address, destination address,
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    temperature value, node battery voltage, Frame Control Check (FCS), Received Signal Strength Indicator (RSSI),
    Number of hops, acknowledgement, list of input commands, list of output commands, profile ID, number of packets
    sent. The data in the array is logged into spreadsheet with respective time stamping for further analysis.
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    ISSN: 0975-5462                                                                                                                       3393
                                   B. Udaya Kumar et. al. / International Journal of Engineering Science and Technology
                                                                                              Vol. 2(8), 2010, 3391-3395




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                                                 Figure 6 Block Diagram of Node 1
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    4.   Results and Discussions
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     The tree topology for ZigBee based WSN is established and observed using TI’s ZigBee Sensor Monitor, shown in
     figure 7. The Virtual Instrument (VI) is developed using NI LabView for the six nodes, shown in figure 8, is used to
     monitor graphically the temperature at each node. The total number of packets sent, received, and the number of
     received for 15 minutes data is presented, shown in figure 9.
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                                                      Figure 7 Network View




     ISSN: 0975-5462                                                                                                3394
                                         B. Udaya Kumar et. al. / International Journal of Engineering Science and Technology
                                                                                                    Vol. 2(8), 2010, 3391-3395




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                                                           Figure 8 Front Panel of the WSN
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                                                              Figure 9 Packets Observed

    5.    References
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    [1]   David Egan, the Emergence of ZigBee in Building Automation and Industrial Control, IEE Computing & Control Engineering, May 2005,
          pp 14-19.
    [2]   B. Udaya Kumar, B. Venkat, ZigBee Based Wireless Motor Speed Control, International Journal of Engineering and Information technology,
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          Volume: 01 Number: 2 Oct 2009, pp 115-120.1
    [3]   ZHANG Qian et al., A wireless solution for greenhouse monitoring and control system based on ZigBee Technology, Journal of Zhejiang
          University SCIENCE A, 2007 8(10):1584-1587
    [4]   Texas Instruments’ CC2480 Interface Specification SWRA175A
    [5]   HSIN-MU TSAI et al., Zigbee-Based Intra-Car Wireless Sensor Networks: A Case Study, IEEE Wireless Communications • December
          2007, pp 67-77
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    [6]   Gary W. Johnson, Richard Jennings, LabView Graphical Programming, 4th edition, MGH
    [7]   John H. Davies, MSP430 Microcontroller Basics, Newnes, 2008
    [8]   José A. Gutiérrez, Edgar H. Callaway Jr., Raymond L. Barrett Jr. Low-Rate Wireless Personal Area Networks; Enabling Wireless Sensors
          with IEEE 802.15.4TM . Standards Information Network, 2003.
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    [9]   ZigBee Specification document, ZigBee Alliance, 2007




     ISSN: 0975-5462                                                                                                                      3395

				
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Description: Zigbee is a synonym for IEEE 802.15.4 protocol. According to the agreement of the technology is a short-range, low-power wireless communications technology. The name comes from the character dances of bees, because bees are flying by and the "buzz" to shake the wings of the "dance" to transfer pollen with peers where the location information, the way that bees rely on such communication constitutes a group network. Its characteristics are close, low-complexity, self-organizing, low power, low data rate, low cost. Mainly suitable for use in the field of automatic control and remote control can be embedded in various devices. In short, ZigBee is a cheap, low-power short-range wireless group Netcom Information Technology.