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Motion Sensors


Posted by: seminar class
Created at: Thursday 31st of March 2011 04:30:21 AM
Last Edited Or Replied at :Thursday 31st of March 2011 04:30:21 AM
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pes of technology, PIR and microwave technology. Microwave technology picks up any movement within the range of the microwave sensor, whereas PIR only picks up heat movement. Microwave PIR sensors alarm upon valid signals from both the PIR and the microwave sensors. This gives these sensors greater reliability and makes them less likely to trigger a false alarm from environmental disturbances. These devices require accurate adjustment for proper operation.
Passive-Infra-Red Motion Sensor
 Passive-infra-red (PIR) motion sensors are used to protect large open areas from intrusion. Th..................[:=> Show Contents <=:]



interfacing pir sensor with microcontroller


Posted by: subramanian ramasamy
Created at: Thursday 11th of February 2010 03:22:12 AM
Last Edited Or Replied at :Wednesday 28th of November 2012 01:49:16 AM
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i am onto a project involv..................[:=> Show Contents <=:]



visnav full report


Posted by: computer science technology
Created at: Friday 22nd of January 2010 04:38:28 AM
Last Edited Or Replied at :Monday 30th of January 2012 12:04:36 AM
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e technologies. One such technology is the vision-based navigation (VISNAV) sensor system developed at Texas A&M university .J comprises an electro optical sensor combined with light sources or beacons. This patented sensor has an analog detector in the focal plane with a rise time of a few microseconds. Accuracies better than one part in 2000 of the field of view have been obtained .this paper presents a new approach involving simultaneous activation of beacons with frequency division multiplexing as part of the VISNA V sensor system.

INTRODUCTION
Now days there are several navigation s..................[:=> Show Contents <=:]



M-voting full report


Posted by: computer science technology
Created at: Tuesday 19th of January 2010 12:07:11 PM
Last Edited Or Replied at :Tuesday 16th of August 2011 12:15:05 AM
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sparent to the laymen (who has a cell phone!) in a big democratic country like India
Information is the much-valued thing and it needs at the right time by the right way and by the right approach.
History has shown that there are several malpractices in election and voting procedure such as Ballot snatching, fake voting, counting malpractices, voters list name cancellation etc., and huge investment of money spent on voting goes waste without achieving the goal of democracy.
Our effort lies in reducing the cost, error and malpractices in the process of voting.
M-Voting (An alternate of ..................[:=> Show Contents <=:]



ieee electrical projects


Posted by: electronics seminars
Created at: Monday 04th of January 2010 05:27:55 AM
Last Edited Or Replied at :Friday 03rd of February 2012 12:30:30 AM
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th wireless Scrutinizing
ttt. NBLC Vehicle Safety System with Alcohol Detector
uuu. NBLC Security for Indutry with Alert System using Smoke Sensor
vvv. TECHNOLOGY: EMBEDDED (ATMEL)
www. DOMAIN: GSM/ GPS BASED PROJECTS
xxx. NBLC Fire Detection & Automatic SMS Intimation System
yyy. NBLC Mobile Based involuntary Robotic Control System
zzz. NBLC Elecro Magnetic Door Status Scrutinize & Control Through Sms
aaaa. NBLC GSM based Smrt Information system for Lost ATM cards
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cccc. NBLC Intruder Alert System in Home / Indutrial Secured Place usin..................[:=> Show Contents <=:]



Micro-fabricated Bio-sensors


Posted by: seminar projects crazy
Created at: Monday 26th of January 2009 10:53:30 PM
Last Edited Or Replied at :Monday 26th of January 2009 10:53:30 PM
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ng/mL and miniature reaction chambers have been fabricated for DNA analysis sequencing by hybridization. The integration of sensors with other components, particularly fluidic devices, offers the promise of microsystems. A miniature positive displacement micropump with a flow rate of 0.1-10 ?L/min. has been fabricated, and tested with water as the working fluid. The future looks very promising for the continued development of these devices in a wide range of fields from environmental monitoring, medical sampling and diagnostics, to precision manufacturing systems


For More Read
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Active pixel sensor


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 12:33:51 PM
Last Edited Or Replied at :Sunday 21st of September 2008 12:33:51 PM
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V_n^2 = kT/2C, but image lag and fixed pattern noise may be problematic. In rms electrons, the noise is N_e = \frac{\sqrt{kTC/2}}{q}.

Hard reset

Operating the pixel via hard reset results in a Johnson?Nyquist noise on the photodioide of V_n^2 = kT/C or N_e = \frac{\sqrt{kTC}}{q}, but prevents image lag, sometimes a desirable tradeoff. One way to use hard reset is replace Mrst with a p-type transistor and invert the polarity of the RST signal. The presence of the p-type device reduces fill factor, as extra space is required between p- and n-devices; it also removes the possibility of usi..................[:=> Show Contents <=:]



mass airflow sensor


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:05:08 PM
Last Edited Or Replied at :Sunday 07th of July 2013 01:12:32 AM
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ations, air density varies with the vehicle's operating environment, and is an ideal application for a mass sensor. (See stoichiometric, ideal gas law, and density.)

There are two common types of mass airflow sensors in usage on gasoline engines. They are the vane meter and the hot wire. Neither design employs technology that measures air mass directly. However, with an additional sensor or two, the engine's air mass flow rate can be accurately determined.

Both approaches are used almost exclusively on gasoline burning, EFI (electronic fuel injection) engines. Both sensor designs output ..................[:=> Show Contents <=:]



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