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ultrasonic motion detector schematic


Posted by: seminar presentation
Created at: Saturday 29th of May 2010 06:38:04 AM
Last Edited Or Replied at :Saturday 29th of May 2010 06:38:04 AM
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ximately 5 seconds after which it will reset itself.
2. A Tamper Switch Output. This is closed until the cover is removed and is connected to the tamper circuit at the control panel.
3. 12VDC Supply Terminals. These detectors require a 12Volt supply from the panel.


Circuit description
The circuit uses a matched pair of 40 kHz transducer elements to detect movement up to 22 feet away. Crystal locked circuit for maximum stability. An LED is switched on for movement indication. The transmitter sends out a steady ultrasonic signal at 40kHz( wavelength ~= 6 mm).
The reflected s..................[:=> Show Contents <=:]



noise alarm mini project with circuit diagram


Posted by:
Created at: Tuesday 28th of February 2012 09:30:05 AM
Last Edited Or Replied at :Tuesday 28th of February 2012 09:30:05 AM
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I'am a second year engineering student I ..................[:=> Show Contents <=:]



The ultrasound motion detection sensor


Posted by: seminar class
Created at: Tuesday 12th of April 2011 12:12:10 AM
Last Edited Or Replied at :Tuesday 12th of April 2011 12:12:10 AM
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der.
PASSIVE SENSORS
A passive infrared motion detection system detects heat energy radiated or emitted by an object, such as a body of a person, moving across a field of view of a heat sensor, such as a pyroelectric detector, of the motion detection system. Passive infrared motion detectors generally use an optical collection system and multiple sensing elements of alternating polarity to create a detection pattern in the volume of interest. Passive IR detectors generally employ a group of radiation sensors coupled through amplifiers to a logic circuit. PIR motion detectors are perh..................[:=> Show Contents <=:]



PIR SENSOR BASED MOTION DETECTION SYSTEM FOR SECURITY


Posted by: sarathpradeep
Created at: Sunday 23rd of January 2011 06:48:16 AM
Last Edited Or Replied at :Tuesday 01st of February 2011 07:06:22 AM
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Hi i am Sarath pradeep, 3rd yr ECE student. I need the full detail including diagrams and programs abt the topic PIR SENSOR BASED MOTION DETECTION SYSTEM FOR..................[:=> Show Contents <=:]



ultrasonic motion detector schematic


Posted by: seminar presentation
Created at: Saturday 29th of May 2010 06:38:04 AM
Last Edited Or Replied at :Saturday 29th of May 2010 06:38:04 AM
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e source moves away the sound waves are expanded and sound lower. This phenomenon is known as the Doppler Effect after the person who first discovered it in 1845.
The wiring of motion detectors is a relatively easy task as you can see below. The diagram shows a unit with the cover removed to reveal a terminal block for the connections to the control panel. These consist of:
1. A Normally Closed Alarm Relay. When the detector is stable (no movement) then this relay is closed. This is connected to the appropriate alarm zone at the panel and hence the alarm loop will be closed. If however the d..................[:=> Show Contents <=:]



Simple Sound Activated Burglar Alarm System


Posted by: Sidewinder
Created at: Saturday 15th of May 2010 10:47:40 PM
Last Edited Or Replied at :Tuesday 12th of October 2010 04:39:07 AM
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t for further processing. The CD4013B dual D-type flip-flop is a
monolithic complementary MOS (CMOS) integrated circuit. It has the inputs D, Q,QBAR The logic level present at the ?D? input is transferred to the output during the positive-going transition of the clock pulse. Setting or resetting is independent of the clock. Once a sound that exceeds certain intensity, it is picked by the microphone, amplified
and sent to the latch, the latch keeps the alarm still ringing until the reset button is pressed.

Circuit diagram ,components and further details in this pdf:
ljs.academicdirect.org..................[:=> Show Contents <=:]



Ultrasonic Motion Detector


Posted by: computer science technology
Created at: Thursday 28th of January 2010 08:06:38 PM
Last Edited Or Replied at :Thursday 28th of January 2010 08:06:38 PM
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closed. This is connected to the appropriate alarm zone at the panel and hence the alarm loop will be closed. If however the detector senses ..................[:=> Show Contents <=:]



ULTRASONIC MOVEMENT DETECTOR


Posted by: kesavaram447
Created at: Thursday 24th of December 2009 06:44:07 AM
Last Edited Or Replied at :Saturday 23rd of April 2011 02:07:24 AM
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