Bluetooth Based Smart Sensor Network - 123seminarsonly.com
Bluetooth Based Smart Sensor Network Rahul Srivastava 0814310072 CS IIIrd Year Bluetooth(IEEE802.15.1 and .2) Bluetooth is a personal area network (PAN) standard that is lower power than 802.11. It was originally specified to serve applications such as data transfer from personal
computers to peripheral devices such as cell phones or personal digital assistants. Bluetooth(IEEE802.15.1 and .2) Relatively high power for a short
transmission range. Nodes take a long time to synchronize to network when returning from sleep mode, which increases average system power. Low number of nodes per network (<=7 nodes per piconet). Medium access controller (MAC) layer is overly complex when compared to that required for wireless sensor applications. Wireless Sensor Networks
Sensors integrated into structures, machinery, and the environment, coupled with the efficient delivery of sensed information, could provide tremendous benefits to society. The ideal wireless sensor is networked and scalable, consumes very little power, is smart and software programmable, capable of fast data acquisition, reliable and accurate over the long term, costs little to purchase and install, and requires no real maintenance. Wireless Sensor Networks Architecture
Star Network (Single Point-toMultipoint) : A star network is a communications topology where a single basestation can send and/or receive a message to a number of remote nodes. The remote nodes can only send or receive a message from the single basestation, they are not permitted to send messages to each other Continued Mesh Network : A mesh network allows
for any node in the network to transmit to any other node in the network that is within its radio transmission range. This allows for what is known as multihop communications; that is, if a node wants to send a message to another node that is out of radio communications range, it can use an intermediate node to forward the message to the desired node. Continued. Hybrid Star Mesh Network : A hybrid
between the star and mesh network provides for a robust and versatile communications network, while maintaining the ability to keep the wireless sensor nodes power consumption to a minimum. In this network topology, the lowest power sensor nodes are not enabled with the ability to forward messages. IEEE 802.15.4 The 802.15.4 standard was specifi cally
designed for the requirements of wireless sensing applications . The standard is very flexible, as it specifies multiple data rates and multiple transmission frequencies .The power requirements are moderately low; however, the hardware is designed to allow for the radio to be put to sleep, which reduces the power to a minimal amount. Applications of Wireless Sensor Networks Structural Health Monitoring Smart Structures :
Sensors embedded into machines and structures enable condition-based maintenance of these assets .Typically, structures or machines are inspected at regular time intervals, and components may be repaired or replaced based on their hours in service, rather than on their working conditions. This method is expensive if the components are in good working order, and in some cases, scheduled maintenance will not protect the asset if it was damaged in between the inspection intervals. Wireless sensing will allow assets to be inspected when the sensors indicate that there may be a problem, reducing the cost of maintenance and preventing catastrophic failure in the event that damage is detected. Additionally, the use of wireless reduces the initial deployment costs, as the cost of installing long cable runs is often prohibitive.
Continued. Industrial Automation : In addition to being expensive, lead wires can be constraining, especially when moving parts are involved. The use of wireless sensors allows for rapid installation of sensing equipment and allows access to locations that would not be practical if cables were attached. An example of such an application on a production line is shown in. In this application, typically ten or more sensors are used to measure gaps where rubber seals are to be placed. Previously, the use of wired sensors was too
cumbersome to be implemented in a production line environment. The use of wireless sensors in this application is enabling, allowing a measurement Future Developments The most general and versatile deployments of wireless sensing networks demand that batteries be deployed. Future work is being performed on systems that exploit piezoelectric materials to harvest ambient strain energy for energy storage in capacitors and/or rechargeable batteries. By combining smart, energy saving electronics with
advanced thin film battery chemistries that permit infinite recharge cycles, these systems could provide a long term, maintenance free, wireless monitoring solution . Conclusion Wireless sensor networks are enabling applications that previously were not practical. As new standardsbased networks are released and low power systems are continually developed, we will start to see the widespread deployment of wireless
By 1983, there were 1,747 enlisted women in the Service, including 85 at sea. * With the 1973 congressional legislation asserting that women could serve alongside men, the Coast Guard became the first military service to open its Officer Candidate...
Times New Roman Arial Symbol Default Design Microsoft Equation 3.0 Work ! Work and Energy Slide 3 Slide 4 Work MATH QUIZ Example Quiz Question Example Slide 11 Slide 12 Work is the area (A) under a graph of force...
Team $ xxxx To provide top-notch healthcare to our community Be the community hospital of choice Longer Term (3-5 year) View Shorter Term (Annual) View Strategy "Leadership" Tactics "Management" Service level spot check rating Electronic notes project Dept. Chairs Complete...
Idealog. Click through and read the introduction and tutorial before starting the quiz. Take a screenshot of your results and add them to this slide. When done, take a screenshot of your results to paste here.
PLANT TISSUES TISSUES MERISTEMATIC PERMANENT SIMPLE Parenchyma COMPLEX Schlerenchyma Collenchyma Vascular Xylem Phloem Apical Interecalary Lateral DERMAL Epidermis Cork & Cork Cambium CELLS that work with other cells for a COMMON FUNCTION form TISSUES MERISTEMATIC TISSUES APICAL - growth in...
Tube Feeding: Recorded as oral intake or a special column. Used for patients who are unable to swallow, the unconscious or comatose. Solution contains all nutrients required by the body and ismore nourishing than IV feedings. Given through NG (nasogastric)...
Value of a more exotic call option continued. To price an Asian option (or any number of other exotic options), you again find the expected discounted value of the cash flow from the option, assuming that the stock grows at...
DFD symbols. Leveling and balancing. Database design. Normal forms. 7-Learning objectives. Explain the symbols and design considerations associated with DFDs. Compare and contrast flowcharts and DFDs with regard to purpose, content, structure, and use in accounting information systems.
Ready to download the document? Go ahead and hit continue!