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3D printed sensor to detect muscle contraction by means of force myography

Perez Lorea, E.A. (2017) 3D printed sensor to detect muscle contraction by means of force myography.

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Abstract:With the help of new technologies used to sense signals from the human body, this project aims to design a sensor, manufactured using the 3D printing technology, to detect muscle contractions using Force Myography (FMG). FMG uses force sensors to detect the signals from the muscles during movement, mainly force sensitive resistors (FSR) and strain gauges. These sensors are easier to personalize and manufacture utilizing 3D printing. This project uses as a reference point the increment in cross-sectional area of the muscle when it is contracting. This way a device that senses stretching like the strain gauge or a pressure sensor such as the FSR can detect the muscle activity measuring mechanical changes in the material. The sensor designed in this thesis is a 3D printed FMG band with four strain gauges that are attached to the upper arm. This band can stretch when the muscle is expanding sensing the movement of the arm. Experiments on the material, the strain gauges and the band allowed to determine that the sensor can detect the muscle contraction and categorize the muscle movement. The 3D printed sensor presented advantages in customization and reduction on costs due to the ease of manufacture. FMG proved to be a robust indicator of muscle activity, which shows a readings similar to the muscle's behavior.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Programme:Electrical Engineering MSc (60353)
Link to this item:http://purl.utwente.nl/essays/81015
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