Eye Motion Tracking Using Infrared Sensor
Eye chase refers to the method of measure wherever we glance, conjointly referred to as our purpose of gaze. These measurements ar administrated by a watch huntsman, that records the position of the eyes and therefore the movements they create. Near-infrared light-weight is directed towards the middle of the eyes (pupil), inflicting detectable reflections in each the pupil and therefore the tissue layer (the outer-most optical component of the eye). These reflections – the vector between the tissue layer and therefore the pupil – ar half-tracked by AN infrared camera. Figure shows the middle of the attention (pupil center) is half-tracked in respect to the position of the tissue layer reflection. The relative distance between the 2 areas permits the calculation of the direction of the gaze.
This project use an infrared sensor to sense eye movements and control an LED.
Hardware components
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Arduino Pro Mini 328 - 5V/16MHz
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Adafruit LiIon/LiPoly Backpack Add-
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NeoPixel strip
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QTR-1A Reflectance Sensor
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3.7 V LiPo Battery
Software apps and online services
Hardware Connections
Debugging
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Two sensors QTR - 1A for eye tracking. QTR - 1A are placed on a plastic sheet at a distance of about the width of the eye.The sensor part and the microcontroller part were fixed to the eyeglasses with a clip respectively.
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When the iris approaches one sensor, the reflected light decreases and the sensor value increases. Conversely, when the iris moves away, the reflected light increases and the sensor value of the photo reflector decreases.
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The right and left movement of the pupil of the LED eyeball senses the increase and decrease of one sensor value and controls it.
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When blinking, both sensor values ​​decrease, so if the two sensor values ​​decrease simultaneously, the eyelids of the LED eyeball will go down.
