Hear the World
Joey Huang, Maggie Xiong
J N Burnett Secondary
Floor Location : M 028 N

For our Science Fair Project, we want to assist the large number of 285 million visually impaired people in the world by creating a wearable device that better helps the visually impaired people detect their surroundings by using sound location. We are hoping the ABU2000 will allow the visually impaired people to be able to independently roam more freely with less fear of harm. The ABU2000 uses sound waves to locate and detect where objects are and the approximate size of them with the movement of their heads. The ABU2000 was inspired by a documentary called "The Boy Who Sees Without Eyes." Ben Underwood lost his eyesight due to cancer at a young age but he was able to determine the objects in his surroundings by using echo location. When Ben created clicking noises with his tongue, he could hear the different frequencies of the sound waves and create a mental image of his surroundings. Our device is based on this ability to use different frequencies to form awareness of the distance and size of the nearby objects. There are currently estimated to be around 285 million people who are visually impaired in our world today. That means approximately 25% of our population includes visually impaired people who have little to no proper vision to use in their everyday lives. This number raises many concerns for us, because we know how difficult it may be for a visually impaired person who does not have the proper support to engage in daily activities. For the process of constructing this device, we included some of the basic materials needed to build a proper circuit. We were able to execute this idea by using a mini microcontroller, buzzers, and an ultrasonic sensor. By uploading a code that allows these components to work together, we were able to make the buzzers perform different frequencies as the ultrasonic sensors are picking up a change in distance. After many trials and adjustments, we were able to achieve a device that worked the way we projected and hoped it would. In result of our observations, we concluded that our device worked fairly accurately according to the instructions from the uploaded code. The code assigned three different frequencies to each defined distance range; the device performed these lines of code correctly throughout various trials. We have experimented with the device's reactions towards different surroundings, as well as when the person is engaged in different activities. All in all, our device is a workable headpiece that does provide a safer environment for the visually impaired people. We hope the ABU2000 can expand farther than just Science Fair, because we know with proper improvements and investments, our device will be able to imitate the human eye for visually impaired people, allowing the 285 million visually impaired people in our world to indulge themselves in a safer atmosphere.