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Sensors / Detectors: Human Proximity Detectors
Sensors / Detectors -- Main Page

Last Updated on:
Friday, October 17, 2014 06:58 AM


Circuits Designed by Dave Johnson, P.E. :

  • 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) ….


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
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]
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]
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]

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]
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)
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)

Sensors / Detectors: Human Proximity Detectors
Sensors / Detectors -- Main Page

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