12-04-2013, 06:14 PM
pls.. pls send me info abt this project , it will be really helpfull for me
12-04-2013, 06:14 PM
pls.. pls send me info abt this project , it will be really helpfull for me
13-04-2013, 09:26 AM
To get full information or details of Bluetooth based smart sensor networks please have a look on the pages
https://seminarproject.net/Thread-blueto...rks--18364 https://seminarproject.net/Thread-blueto...nar-report https://seminarproject.net/Thread-blueto...ull-report https://seminarproject.net/Thread-blueto...rt?page=24 https://seminarproject.net/Thread-blueto...nar-report https://seminarproject.net/Thread-blueto...8#pid68968 if you again feel trouble on Bluetooth based smart sensor networks please reply in that page and ask specific fields in Bluetooth based smart sensor networks
20-08-2013, 02:41 PM
Bluetooth Based Smart Sensor Networks
Smart Sensor.docx (Size: 19.99 KB / Downloads: 17) ABSTRACT “Dragging the world towards wireless galaxy” Various sensors are already in a broad use today as part of different devices or as standalone devices connected to a network usually to monitor industrial processes, equipments or installations. The advancements in technology, wireless communications have enhanced development of small, low power and low cost devices. Such devices when organized into a network, present a powerful platform that can be used in many interesting applications. Bluetooth is a low cost, short-range, wireless technology with small footprint, low power consumption and reasonable throughput. Bluetooth wireless technology has become global technology specification for “always on” wireless communication not just as a point-to-point but was a network technology as well. The kernel of this paper, deals about an implementation of bluetooth based sensor networks. Introduction The communications capability of devices and continuous transparent information routes are indispensable components of future oriented automation concepts. Communication is increasing rapidly in industrial environment even at field level. In any industry the process can be realized through sensors and can be controlled through actuators. The process is monitored on the central control room by getting signals through a pair of wires from each field device in Distributed Control Systems (DCS). With advent in networking concept, the cost of wiring is saved by networking the field devices. But the latest trend is elimination of wires i.e., wireless networks. BLUE TOOTH – NETWORKS In bluetooth, a Piconet is a collection of up to 8 devices that frequency hops together. Each Piconet has one master usually a device that initiated establishment of the Piconet, and up to 7 slave devices. Master’s Blue tooth address is used for definition of the frequency hopping sequence. Slave devices use the master’s clock to synchronize their clocks to be able to hop simultaneously. BLUE TOOTH BASED SENSOR NETWORK The main challenges in front of Blue tooth developers now are to prove interoperability between different manufactures’ devices and to provide numerous interesting applications. One of such applications is wireless sensor networks. Wireless sensor networks comprise number of small devices equipped with a sensing unit, microprocessors, and wireless communication interface and power source. 1. An important feature of wireless sensor networks is collaboration of network nodes during the task execution. 2. Another specific characteristics of wireless sensor network is Data-centric nature. As deployment of smart sensor nodes is not planned in advance and positions of nodes in the field are not determined, it could happen that some sensor nodes end in such positions that they either cannot perform required measurement or the error probability is high. For that a redundant number of smart nodes are deployed in this field. These nodes then communicate, collaborate and share data, thus ensuring better results. Smart sensor nodes scattered in the field, collect data and send it to users via “gateway” using multiple hop routes. SENSOR NETWORK IMPLEMENTATION The main goal of our implementation was to build a hardware platform and generic software solutions that can serve as the basis and a test bed for the research of wireless sensor network protocols. Implemented sensor network consists of several smart sensor nodes and a gateway. Each smart node can have several sensors and is equipped with a microcontroller and a bluetooth radio module. Gate way and smart nodes are members of the Piconet and hence maximum seven smart nodes can exist simultaneously in the network.For example, a pressure sensor is implemented, as bluetooth node in a following way. The sensor is connected to the bluetooth node and consists of the pressure sensing element, smart signal-conditioning circuitry including calibration and temperature compensation, and the Transducer Electronic Data Sheet (TEDS). These features are built directly into the sensor microcontroller used for node communication control plus memory for TEDS configuration information. CONCLUSION Blue tooth represents a great chance for sensor-networked architecture. This architecture heralds wireless future for home and also for industrial implementation. With a blue tooth RF link, users only need to bring the devices within range, and the devices will automatically link up and exchange information. Thus implementation of blue tooth technology for sensor networks not only cuts wiring cost but also integrates the industrial environment to smarter environment. Today, with a broader specifications and a renewed concentration on interoperability, manufacturers are ready to forge ahead and take blue tooth products to the market place. Embedded design can incorporate the blue tooth wireless technology into a range of new products to meet the growing demand for connected information appliances. |
|