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& ABACUS
OPTICAL MECHANICS
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Capacitor Proximity
Sensor
a capacitance proximity sensor to detect objects
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Edge Sensor
The capacitance "edge sensor" consists of a flexible rubber
/vinyl extrusion in which the sensor element are embedded. Any object
of high dialectic value (e.g. human body part) brought into proximity
to the sensor element is detected by the sensor. When a certain threshold
is reached (user selectable) the electronics box can trip a relay, which
can reverse or stop a motor or sound a buzzer or trigger an electrical
device. The sensitive of the device is adjustable .
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The
animated gif file depicts triggering of the sensor as a hand approaches
LED's illuminate when the sensor is triggered
computer screen in background indicates capacitance values
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| indicator LED's on
- hand detected |
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| The model above consists
of a 7.5 by 5.5 inch ground metal plate onto which a pair of 1/16-inch diameter
insulated sensor wires wires were glued. The wires were place ½ inches
apart. |
Indicator LED's
off - hand not detected |
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HCS (Handle
Capacitor Sensor),
a capacitance proximity sensor - a touchless sensor for triggering
the opening of power doors and windows
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The HCS ((Handle
Capacitor Sensor)), is a capacitance
proximity sensor used to detect a hand that is purposely attempting to open
a window or door. The capacitor sensor system detects the hand before it
touches the handle and assists the the opening of the window or door by
releasing the power lock or actuating a power mechanism to open the window
or door. When the hand is detected, the power actuators assist in opening
of the door or window |
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The sensing
probe consist of multiple segments. Each segment detects the capacitance
of the sensed object and the adjacent environment. When the capacitance
reaches a predetermined constant the sensor is triggered and the door or
window actuates to assist in open of the door or window. The value of the
capacitance is dependent on the position of the hand and its proximity to
the sensor probe. The sensor can be set to trigger when the hand is few
millimeter to many centimeters from the sensor probe. |
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Hand
actuates the opening mechanism for the window or door by reaching for
the handle from the bottom or top
LED
in right upper corner lights up as hand triggers the opening mechanism
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Click
here to view Abacus Optical Mechanics Capacitor sensors
Click
here to return to InsCap's home page
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Anthony Bledin
612 Meadow Grove Lane
Westlake Village, CA 91362
Phone: 805-494-4490
Fax: 805-494-9948
e-mail: abledin@abacusa.com
updated
November 8, 2002
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