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    S home S home Presentation Transcript

    • DEPARTMENT OF ECM PERFORMANCE EVALUATION OF WIRELESS SENSOR NETWORKS BASED ON ZIGBEE TECHNOLOGY IN SMART HOME By G.Raghu Kiran 13205208 M.Tech (WCSN)
    • CONTENTS Introduction Home Appliances Control In Smart Homes Operation Mode In Smart Home The Concept Of Smart Home Zigbee ZigBee Protocol Stack Advantages of Zigbee
    • INTRODUCTION The integration of devices and an intelligent networking in a home can make it smart by allowing us to manage energy in a way that is appropriate. To better control of energy consumption in the Smart Home, the Home Area Network (HAN) is used to collect sensor information. Zigbee is a high technology for the Smart Home network communication.
    • HOME APPLIANCES CONTROL IN SMART HOMES It is necessary to investigate the electric power sources that support the normal operation and management in a house. It is necessary to know what kind of configuration and control are indispensable to build a smart home. Architectural and functional requirements on behalf of utilities in the design of smart homes should be taken into serious consideration.
    • OPERATION MODE IN A SMART HOME The smart control mainly consists of three types of scenarios:  When the residents stay at home.  When there is nobody at home.  When the meter receives the notification of demand-response from utilities.
    •  ZigBee and IEEE 802.15.4 are standards-based protocols that provide the network infrastructure required for wireless sensor network applications.  For sensor network applications, key design requirements support communication between large numbers of devices in multi-application environment.
    • APPLICATIONS  Energy Management and Efficiency  Home Automation  Building Automation  Industrial Automation
    • ZIGBEE PROTOCOL STACK
    • ZIGBEE NETWORK ZigBee networks include the following device types:  Coordinators  Routers  End devices
    • ADVANTAGES        Low cost Secure Reliable and self healing Flexible and extendable Low power consumption Easy and inexpensive to deploy Global with use of unlicensed radio bands
    • A SMART HOME SOLUTION WITH ZIGBEE
    • Design and Implementation The structure of Wireless Sensor Networks in the smart home requires three different devices: Coordinator, Router and End Device. All home environments can then be monitored and the required data can be delivered to the coordinator. Then appropriate control commands are sent through coordinator to home appliances.
    •  In this environment, the coordinator is integrated with the home gateway that handles the control data in the mesh network.  The household devices are attached to the router or the reduced function node module.  In order to address the problem of interconnection between appliances and the Zigbee wireless module, we adopted the SAANet Protocol.
    • EXPERIMENTAL SETUP The experimental system is divided into three main parts: • A user interface communicates with the user via the computer and displays the results. • A coordinator collects sensor readings to the user. • An end device consists of two parts: sensor interface and ZigBee interface. The sensor used in this test is a temperature sensor.
    • Operation Mode in a Smart Home In terms of energy management, the operation mode is intended for two categories: Home Appliances oHVAC system integrated with thermostats and Infrared/motion sensors. oDaily appliances with thermostat. oLighting system connected with temperature sensors. oDigital entertainment appliances with Infrared or motion sensor. Renewable energy sources. oPV system/wind turbine. oPHV/PHEV(plug-in hybrid vehicle)
    • Technology Requirements of utilities in a Smart Home Home Area Network in secure communication with utilities
    • Networking patterns and technology for home energy control
    • The network infrastructure is the basic skeleton for smart home construction. The smart home is functionally categorized into two main networks: • Broadband communication network • Control network The broadband communication network is mostly attached to home entertainment devices. The control network mainly supervises the regular operation for all kinds of home devices such as the switching-on/off for lamps, start/stop of air-conditioner.
    • Technically, two types of networking techniques are widely adopted in the field of home appliance control. Directly transmit data over power lines. The mainstream protocol is PLC (Power Line Communication). Exchange data between sender and receiver in a wireless. The representative protocols in that case are Bluetooth, 802.15.4/ZigBee .
    • CONCLUSION  There are some factors such as a distance between the end device and the coordinator and also some obstacles which affected to the RSSI performance.  On the contrary, the presence of a variable speed drive does not obstruct the signal sent by the Zigbee modules.  All in all, the quality of wireless link of WSNs based on Zigbee technology depends on the distance between nodes, the location of each sensor nodes and obstacles between them.  All these communication systems Wi-Fi, Zigbee and Bluetooth operate at the same frequency bands. However, the interference problem between Zigbee and other devices can occur.  In this context, future research will be based on the possibility of coexistence between these different wireless protocols in a smart home.