Human- Prosthesis- Interface
The aim of this project was to create an interface for a prosthesis that behaves like a human hand. This work involves electromyography (EMG) to measure muscle impulses. The main idea is to have a prosthesis for a person with disability that works through neural impulses. The interface presented here allows the user to control a prosthesis with their own hand. In future work, the interface will be adapted to the needs of the user.
This design uses bending sensors that are attached to 3 of the user's fingers. These sensors are responsible for the thumb, index finger and middle finger. By moving these fingers, the sensors measure a value that is assigned to the movement of each finger of the prosthesis. To achieve a better result, the user can change the intensity of the bending sensors with a potentiometer. To achieve the goal of a neural interface, this project includes a Muscel SpikerShield from backyardbrains. With this shield it is possible to measure muscle impulses that can be mapped to a servo movement. For this purpose two bracelets were designed that can be worn on the forearm. These bracelets have two muscle electrodes that reproduce electrical impulses responsible for the ring finger and the little finger. When a fist is made, the prosthesis reacts to the movement and closes the respective finger.
