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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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1. Local Event. It would be one like someone stepping on a floor mat which had a contact switch in it, walking through a light beam, or driving a car over a magnetic sensor.
2. Area Event. It would be someone moving within the ‘field of view’ of a particular sensor. This area is generally known or controllable, but it is large in comparison to the ‘field’ of a contact switch etc.
Fresnel lens
 Some sort of plastic ‘lens’ that covers the circuit board and the PIR sensor device. It ‘pinches light that passes thru it.
 Tends to ‘pinch’ the light such t..................[:=> 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 involving car theft contol could anyone help me out in knowing how to interface a pir ..................[:=> 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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n the bandwidth of the beacon signal.

DEMODULATION
Considering that it is needed to determine the amplitude of the sinusoidal signal and the associated signal due to the relative movement of the sensor, an approach similar to AM demodulation is used here. The main difference, however, is that we are also interested in the carrier amplitude. Although analog circuits can be used to perform the channel separation and demodulation, the DSP based approach provides a more cost effective solution with a higher degree of reliability, programmability and scalability.
In the foregoing discussio..................[:=> 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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imposes its shape as a boundary condition on the field, thereby spatially modulating the field into an analog of the fingerprint.
An array of tiny antenna arranged in a square matrix of 96 rows and columns does the actual sensing. Located above the reference plane, the array measures about 6.5mm on a side, giving the sensor a linear resolution of about 15 pixels per millimeter.
The sensed analog electric field values are scanned from the sensor matrix a row at a time, digitized, and sent from the FingerLoc chip to the cell phoneâ„¢s microprocessor for further processing.
In the cell ..................[:=> 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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cation
ff. Tidy Home control through Voice Enabled System
gg. Industrial High voltage & temperature Scrutinize System
hh. Involuntary Industrial Power Scheduler using Embedded System
ii. Technology : Embedded ( ATMEL)
jj. Domain Pc Based Wireless Projects Cost : /-
kk. NBLC Computer Secret Data Broadcast through Wireless Encoded technique
ll. NBLC Confined Home system through Wireless Multi sensor
mm. NBLC Transformer Power Line Fault Scrutinize from Remote Area
nn. NBLC Realization of Digital IC tester using Embedded System
oo. NBLC Technology : Embedded (Atmel)
pp. NBLC Domain : M..................[:=> 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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interest is the application of this technology to biological systems. For instance an immunobiosensor for a bacterial food toxin with a sensitivity of 1 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..................[:=> Show Contents <=:]



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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temporal noise operation, and on-chip circuits for fixed-pattern noise reduction, and published the first extensive article predicting the emergence of APS imagers as the commercial successor of CCDs. Between 1993 and 1995, the Jet Propulsion Laboratory developed a number of prototype devices, which validated the key features of the technology. Though primitive, these devices demonstrated good image performance with high readout speed and low power consumption.

In 1995, personnel from JPL founded Photobit Corp., who continued to develop and commercialize APS technology for a number of a..................[:=> 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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es closed-loop feedback in order to make minor corrections to the predicted air mass...................[:=> Show Contents <=:]



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