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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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close neighbor etc.) wall, becomes hot, and even a human moving in front of it is not as 'noticable' as the background heat of the wall.
 depending on the 'apparent background', they may take 'some time' to detect motion.
 ‘LOGIC’ of the PIR sensor
 The ‘logic pf the PIR sensor is that it must detect ‘significant change’ of the normal level of heat within the ‘field’ of its view. The circuits that control must be able to determine what ‘normal’ is, and then close a switch when the normal field changes, as when a human walks in front of it. It must also be able to ..................[:=> 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 cont..................[:=> 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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t wavelength and low carrier frequencies due to perhaps the sun, its reflections, incandescent or discharge tube lights, LCD and cathode ray tube displays etc. In many cases this ambient energy would swap a relatively small beacon signal and the PSD centroid data would mostly correspond to this unwanted background light.

In order to avoid this problem by modulating the beacon controller current by a sinusoidal carrier of high frequency. The resulting PSD signal currents then vary sinsuoidally at approximately the same frequency and have to be demodulated to recover the actual current prop..................[:=> 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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storing in the database along with their birth/death record becomes necessary.
User sends his finger print (secured print is encrypted and sent as sequence of data in encoded form) to the service provider.
Service provider verifies the fingerprint and checks for the validity of voting and sends voter list (a mobile ballot paper) through SMS.
User casts his vote and sends 2nd message.
Since mobile phone has connectivity with computer systems it is easy to store and access at the service provider and results be published instantly.
Finger print sensor:
The FingerLoc sensor is a monoli..................[:=> 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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grid based physiological signal monitoring system

r. Bluetooth/GMRS Car Security System with a Randomly Located Movement Detect Device

s. Bluetooth Based Wireless Remote Device Controlling and Data Acquisition

t. Bluetooth Remote Control

u. Application of Bluetooth technology in ambulatory wireless medical monitoring

v. A Remotely Controlled Bluetooth Enabled Environment

w. Coupling between Bluetooth modules inside a passenger car

x. Remote-controlled home automation system via Bluetooth home network

y. Home appliance control system over Bluetooth with a cellula..................[:=> 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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s in a wide range of fields from environmental monitoring, medical sampling and diagnostics, to precision manufacturing systems


Fo..................[:=> 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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blue signals can be reconstructed.
APS using TFTs
A two-transistor active/passive pixel sensor
A two-transistor active/passive pixel sensor

For applications such as large area digital x-ray imaging thin-film transistors (TFTs) can also be used in APS architecture. However, because of the larger size and lower transconductance gain of TFTs compared to CMOS transistors, it is necessary to have fewer on-pixel TFTs to maintain image resolution and quality at an acceptable level. A two-transistor APS/PPS architecture has been shown to be promising for APS using amorphous silicon TFTs. In the..................[:=> 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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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 a 0 - 5.0 volt signal that is proportional to the air mass flow rate, and both sensors have an IAT sensor (intake air temperature) incorporated into their housings.

When a MAF is used in conjunction with an exhaust gas oxygen sensor, the engine's air/fuel ratio can be controlled very accurately. The MAF sensor provides the open-loop predicted air flow information (the measured air flow) to the engine's ECU, and ..................[:=> Show Contents <=:]



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