توصيفگر ها :
پيرچشمي , عينك چندكانوني , فاصله ي كانوني , پديده ي تريبوالكتريك , حسگر تريبوالكتريك , پلك زدن , نانومبدل هاي تريبوالكتريكي , مُد برخورد عمودي , الكتريسيته ساكن
چكيده انگليسي :
Manufacturing and Experimental Test of a Sensor Based on Triboelectric Effect SeyedReza Mansourifar r mansoorifar@me iut ac ir September 22 2020 Department of Mechanical Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree Master of Science Language PersianSupervisor Dr Hamid Reza Mirdamadi Assoc Prof hrmirdamadi@cc iut ac ir AbstractPresbyopia is one of the inevitable irreversible processes due to increased entropy in physiological systemsthat affects everyone in older age In presbyopia the focal point of light rays changes away from the retina which prevents a person from seeing close objects well Currently there are prototypes of liquid lens glassesunder construction which have the capability of changing the focal length in order to resolve this deficiency This research aims to devise a method to change the focal length of these glasses without the need for a user shands The blink detection method is chosen to receive this command For this purpose there is a widely usedmethod of electrooculography signal EOG but the method of using the triboelectric nanogenerators TENG has a more appropriate output Based on the electrostatic effect these sensors can detect minute mechanicaldisplacements well In this research an attempt has been made to implement and detect the user s skin slightmovements during blinking by pasting the TENG sensor on the user s face skin At first TENG basic princi ples are studied and appropriate materials and methods are selected to build this sensor Moreover accordingto previous reported research results the sensor should be properly tested and the output being the electricalpotential difference is compared to the accredited scientific articles for validation After this validation theeffective factors for improving this sensor output should be investigated for obtaining better results in contrastto the previous research This project is mostly based on the validation and feasibility of sensor manufacturebased on the TENG process KeywordsPresbyopia Multifocal glasses Focal length Triboelectric effect Triboelectric sensor Blinking TENG Verti cal contact separation mode Electrostatics effect
