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Sensors / Detectors: Human Proximity Detectors
Sensors / Detectors -- Main Page
Last Updated on:
Wednesday, April 18, 2012 07:25 AM |
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Circuits Designed
by Dave Johnson, P.E. : |
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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Dual comparators stabilize proximity detector - 02/16/98 EDN-Design
Ideas....In the proximity detector of Figure 1, a 4-in.-sq piece of
copper-plated pc board serves as an antenna that forms one plate of a
capacitor. An approaching (grounded] person serves as the other plate,
producing a capacitance value.... [Design Idea by Arthur Harrison, US Army
Research Laboratory, Adelphi, MD, and Joseph Stern, Maxim Integrated
Products, Sunnyvale, CA] |
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Dual comparators stabilize proximity detector - 02/16/98 EDN-Design
Ideas....In the proximity detector of Figure 1, a 4-in.-sq piece of
copper-plated pc board serves as an antenna that forms one plate of a
capacitor..... [Design Idea by Arthur Harrison, US Army Research Laboratory,
Adelphi, MD, and Joseph Stern, Maxim Integrated Products, Sunnyvale, CA] |
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Electric Field Disturbance Monitor-2 - This schematic is the
motion discriminator alarm and battery monitor sections of the field monitor
that is discussed in more detail a Electric Field Disturbance Monitor. (link
is off-site) …. [Designed by David A. Johnson] |
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ELECTRIC
FIELD DISTURBANCE MONITOR
This schematic is the power supply and front-end sections of the field monitor that is
discussed in more detail at
Electric Field
Disturbance Monitor. (this link is off-site) The system can detect human and
animal motion by the electric fields they disturb. |
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Infrared beam barrier/ proximity sensor - his circuit can be used as an
Infrared beam barrier as well as a proximity detector. The circuit uses the very
popular Sharp IR module. The pin nos. shown in the circuit are for the Sharp module
only. For other modules please refer to their respective datasheets.... [Radioland.nt.au] |
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Wireless Temperature & Humidity Sensor with USB - this project is based on
obdev's RemoteSensor example and their firmware-only USB implementation; the main
change is the replacement of the analog sensors with a Sensirion SHT11 digital
temperature and humidity sensor…(added 07/07/07) |
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Wireless Temperature & Humidity Sensor with USB Interface - This project is
based on obdev's RemoteSensor example and their firmware-only USB implementation; the
main change is the replacement of the analog sensors with a Sensirion SHT11 digital
temperature and humidity sensor. ….(electronic schematic added 11/08) |
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Sensors / Detectors: Human
Proximity Detectors
Sensors / Detectors -- Main Page |
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