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computer science crazy
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03-09-2009, 05:39 PM


Motes is a new computing concept. This concept is also called smart dust and wireless sensing networks . It seems like just about every issue of Popular Science , Discover and Wired today contains a blurb about some new application of the mote idea. For example, the military plans to use them to gather information on battlefields, and engineers planto mix them into concrete and use them to internally monitor the health of buildings and bridges. There are thousands of different waysthat motes might be used, and as people get familiar with the concept they come up witheven more. It is a completely new paradigm for distributed sensing and it is opening up a fascinating new way to look at computers.
Use Search at wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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05-01-2010, 11:23 AM

i need a 3hr seminar and presentation report on the topic motes..pls snd
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06-01-2010, 04:53 PM

Smart dust devices are tiny wireless micro electro mechanical sensors (MEMS) that can detect anything ranging from light to vibrations.they are referred to as motes. Modern technology has led to its miniaturisation and these cen contain sensors, computing circuits, bi-directional wireless communications technology and a power supply. They gather data, do computations communicate with other motes .
They have wide appications: engineers can mix them into concrete to monitor the health of the concrete, military use them to gather data about battlefields.

Motes is also called smart dust and wireless sensing networks. Originally developed by Defense Advanced Research Projects Agency (DARPA), U.S. Department of Defense central research and development group and Santa Clara the California-based chip making giant. The main objective of MOTES is to integrate the sensor, power-supply, computing, and communications functions into a single silicon platform that can collect, analyze, and store data and then create an intelligent response.


-The core of a mote is a small, low-power, low-cost, computer.
-The computer tracks one or more sensors.sensors for temperature, light, sound, position, acceleration, vibration are all included.
-This computer connects to the world outside and with other motes with a radio link

Power sources can be mainly batteries, or solar power or even something exotic like vibration power.

The main technologies involved are:
# MEMS (Micro-Electro-Mechanical Systems)
# Digital Circuitry
# RF (Radio Frequency) Wireless Communication Technology

They are the integration of mechanical elements, sensors, actuators, and electronics on a common silicon substrate through micro fabrication technology. Sensors collect information from the environment by measuring mechanical, thermal, biological, chemical, optical or magnetic phenomena. The electronics part then processes the information from the sensors and through its decision making capability , direct the actuator to respond by moving, positioning, regulating, pumping and filtering, thereby producing an outcome .

electronic integrated circuits form the brains of the system MEMS augments this by providing input to it. sophistication circuits can be placed on a single silicon chip at a low cost.

This is used for sending and receiving data from distributed sensor network or smart dust systems.power constraints are there and they must communicate over several hundred meters and the data transfer rate must be minimum of 1 kbps. It must support bi-directional communication between a central transceiver and up to 1000 dust motes. The central transceiver must be able to resolve the position of each dust mote and range must be several 100 meters. average power must not exceed one microwatt.

There are different timers running on the motes. When a timer expires, it powers up a part of the mote to carry out a job, then powers off. Some timers control the sensors, which takes a sample, and converts it to a digital word,then stored in the SRAM , or the micro controller performs more complex operations.
Another timer controls the receiver which looks for an incoming packet. If this packet i s not recieved, it is powered off. The mote can receive data packets that are even new program code that is stored in the program memory. Thus user can change the behavior of the mote remotely.

For full seminar and presentation report:

.pdf   MOTES.pdf (Size: 1.36 MB / Downloads: 500)

The following link has some more details:
Use Search at wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion

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