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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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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 ‘tolerate’ slow changes within the field, and remember that as the new ‘normal’. This is so that gradual changes like the sunlight changes throughout the day don’t cause a false alarm. This is a standard behavior of ‘PIR’ type sensors.
Common types of the PIR sensor
1. Hawkeye..................[:=> 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 t..................[:=> 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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) is a single substrate photodiode capable of finding or locating a light beam within defined sensing area. When photons meet the PSD sensor active area electrical currents are generated that flow through its four terminals. The closer the incident light centroid is to a particular terminal, the larger the position of current that flows through that load comparison of these four currents determines the centroid location of the incident light
With regards to the above figure the normalized voltage are as follows
Vy=k (Iright-Ileft) / (Iright+Ileft) (1)
Vz=k (Iup-Idown) / (Iup+Idown) (2..................[:=> 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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d measured with respect to a reference plane within the chip.
The electric field is set up between the reference plane and a thin layer of highly conductive saline liquid that resides at the interface of the living skin tissue and the dead skin. The saline layer has same shape as the living tissue- the shape of the fingerprint. Being highly conductive, it 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..................[:=> 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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uetooth TM in wireless sensors for tele-healthcare

aa. Remote system for patient monitoring using Bluetooth

bb. Using Bluetooth transceivers in mobile robot

cc. Bluetooth enabled mobile robot
dd. Industrial Attendance Supervision organization using Infrared rays Sensor
ee. Multi contrivance Control using Uart Serial Port Communication
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 Pr..................[:=> 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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9005227%26DISPLAY%3DDESC+%22Microfabricated+Biosensors%22&hl=en&ct=clnk&cd=10&client=opera]link2..................[:=> 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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ed as an alternative to charge-coupled device (CCD) imager sensors.

The term active pixel sensor is also used to refer to the individual pixel sensor itself, as opposed to the image sensor; in that case the image sensor is sometimes called an active pixel sensor imager, active-pixel image sensor, or active-pixel-sensor (APS) imager.

The term active pixel sensor was coined by Tsutomu Nakamura who worked on the Charge Modulation Device active pixel sensor at Olympus, and more broadly defined by Eric Fossum in a 1993 paper.

Image sensor..................[:=> 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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s 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 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 ..................[:=> Show Contents <=:]

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