Collision Detection Glasses for the Blind (EXRAY Glasses)
Helping the blind to navigate the changing world around them.
Self-Defined Project | 2019
The glasses notify blind users about any objects they are going to collide with.
Using 2 cameras, the glasses can detect objects in front of the user’s 180° field of view.
Vibration motors provide haptic feedback and only in the direction of the object detected.
“Be careful there is an object approaching your left.”
Voice commands warn and alert the user using the integrated speakers.
THEE ARE ALSO 2 RE-MAPPABLE BUTTONS ON THE RIGHT SIDE
TEXTURED RUBBER SQUEEZE BUTTON
TEXTURED RUBBER SLIDER BUTTON
Users can connect to their smartphone and re-map all buttons on the glasses to specific commands.
TEXTURED CARRYING CASE FOR EASY GRIP
LID CUT OUT ALLOWS BLIND USERS TO EASILY OPEN THE CASE
The glasses magnetically attach and charge inside the carrying case. The carrying case has an internal battery that can charge the glasses through wireless charging.
To charge the case, blind users can magnetically attach the case (with the glasses inside) to the dock. Users can charge the glasses overnight and charge the glasses on the go.
I developed and explored multiple concepts through sketching and rapid prototyping.
I tested the dimensions and overall size of the frames. The electronics components need to fit inside and it was important to determine dimensions that won’t make the glasses bulky and uncomfortable.
Sketch modelling allowed me to explore various different shapes and forms quickly.
Testing the positioning of the buttons and sensors.
I explored different shapes and forms for the buttons.
It was important to use a shape and form that blind users can easily feel and ergonomically use.
It was important to use materials that made the glasses durable, lightweight, affordable, and comfortable.
The buttons can be easily pressed and identified with the help of the texture and matte finish.
Finish: Matte Textured Pattern
Material: Nylon (Polyamid)
The glasses will be durable while, reducing manufacturing costs. The overall structure will be lightweight and the smooth surface of the frame won’t irritate users with Metal allergies.
The lens will be lighter than glass and will be safer when it cracks.
With the silicone, the glasses comfortably sit on the ears. The material is lightweight, and users who have metal allergies will prefer this material.
Finish: Matte Textured Hexagon Pattern
Other materials explored:
I experimented using polished aluminum as the material for the frame. However, I decided to avoid all metal materials. The weight of the internal electronics and components combined with a metal frame would make it too heavy and uncomfortable. Some users also have allergies to certain metals.
I prototyped electronic circuits to test the technology and the haptic feedback system.
I made multiple circuits and electronics layouts and determined how much space is required for the internal hardware of the glasses.
This video shows how the IR sensors detected my hand and vibrated the motor. The motors seem loud although, could be reduced to mimic a light tap. (Sound On)
These were the final iterations of the circuits and electronics. I used these dimensions and updated my CAD models and physical prototypes of the glasses.
© Omer Ali 2019.