The system Kearns is creating is an example of biosignal acquisition technology, which uses the body’s electrical impulses to trigger devices. Kearns’ system uses brainwave signals to control a camera, asking it to take pictures, videos or time-lapse videos of anything the user is looking at. The system can also be activated with changes in the user’s heart rate or with hand motions.
“The end goal was to demonstrate a proof-of-concept that utilized wearable computing, biosignal acquisition technology, and signal analysis in order to provide an intuitive, innovative and hands-free way to control a camera,” Kearns says.
The device is no larger than a 50-cent piece and can be worn like a watch. When users first wear the device, the EEG can log and graph their mental and physical statuses over time, allowing users to adjust the sensitivity levels that trigger the device. Once that step has been performed, the controller can be activated in a number of ways: through specific types of brainwaves sensed by the controller, through hand motions sensed by the accelerometer on the device, or through the increasing heart rate signals transmitted from a remote heart-rate monitor
Kearns’ project also demonstrated that the device has the ability to be used with prosthetics. Near the end of his internship, Kearns and his mentor worked with a pair of high school students. The students had made a 3-D printed prosthetic hand, and Kearns connected the hand to a small electric motor and his EEG device, allowing wearers to use their brainwaves to tighten the strings on the fingers of the hand in the same way that our own tendons are used to grip objects.
Kearns hopes that one day his device will not only be used in the medical field, but also in everyday usage, such as being able to control the lighting in homes based on people's emotions, or used by pilots or drivers to operate on-vehicle electronics without taking their hands off the controls.
His research has been recognized on a national scale, too: This spring he was selected as an honorable mention for the prestigious Barry Goldwater Scholarship and Excellence in Education Program.
Writer: Morgan Ella Fay Ward is a junior from Fruitland majoring in English and minoring in history. She hopes to go on to a graduate program to obtain a doctorate and teach at a university level.
Photographer: Yishan Chen is an international student from Kumming, China, and is majoring in physical education. He is proud to be a photographer because it’s a job he loves and enjoys.
Electrical engineering student designs device that uses body signals to trigger camera, prosthetics
Phillip Kearns is designing technology that could one day help people with prosthetics control their devices with their thoughts.
Kearns began his research during a summer 2015 internship at Intel in Hillsboro, Oregon, with his mentor, prototyping developer Andrew Lamkin. His goal was to use a computing system to receive brainwave signals from an electroencephalogram (EEG) biosensor to control other devices such as a digital camera.