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ABACUS OPTICAL |
Capacitor sensors
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To view animated additional video of Automotive window capacitance "anti squeeze sensor" click her e |
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Capacitance Sensors We design capacitor sensors. Each sensor consists of sensing element connected to and electronic box via an umbilical cable. The sensing element can be any shape of electrical conductive material. Any object of high dialectic value (e.g. human body part) brought into proximity to the sensor element changes the capacitance of the sensor element. This change in capacitance is detected by the electronics. The electronics can be set to trigger when a certain capacitance level is reached. Abacus Optical mechanics is seeking partners to further develop these sensor and commercialize the sensor. These sensors can be used in numerous
applications including: (click on appropriate area to view an example of sensor application) |
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Automotive window
capacitance The capacitance "anti-squeeze sensor" for car door windows consists of an electronics box and a sensor element. The sensor element is imbedded in the window seal and is sensitive to objects of high dialectic value (e.g. human body part). An object of high dielectric value can be sensed at a distance of 0 to 10 cm from the sensor (user selectable). When the objected is detected (for example a body part e.g. finger) trapped in the path of a closing window of a car door the electrical window motor is programmed to reverse without touching or compressing the potentially trapped body part. |
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The capacitance "anti-squeeze sensor" for train
door consists of the electronics (ASIC -applications specific integrated
circuit) and sensor elements. The sensors elements are imbedded in the
train door seal and are sensitive to objects of high dialectic value
(e.g. human body part) sensing at a distance of 0 to 10 cm from the sensor
probe (user selectable). When the objected is detected (for example a body
part e.g. finger) the train door can be made to revere and thus prevent
trapping of a body part in the power closing trains door.
The sensor unique design and placement of the sensor elements
enable it to distinguish between the opposing closing train door and a
body part (e.g. finger). In addition the patented design enables the sensor
to detect object that have low dialectic properties. |
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Capacitance
mat sensor Abacus Optical Mechanics capacitance mat sensor consists of a flexible rubber /vinyl mat in which the sensor element is 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 (user selectable) of mass is reached the electronics box can trip a relay, which can reverse or stop a motor or sound a buzzer or trigger an electrical device. |
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Abacus Optical Mechanics capacitance "edge sensor" consists of a flexible rubber /vinyl extrusion in which the sensor element is 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 sensor we produce could be used for perimeter security monitoring by either being buried in the ground or attached to a fence. Interruption or any object of high dialectic value (e.g. human body part) brought into proximity to the sensor element is detected by the sensor. This will result in a signal change, which in turn can trigger a security response. The sensitivity of the sensor can be adjusted. |
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lasted update 6th April 2002
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