Testing the Tactile Perception of Human Fingers The Dynamic Tactile Tablet (DTT) Chamiere Greenaway...
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Transcript of Testing the Tactile Perception of Human Fingers The Dynamic Tactile Tablet (DTT) Chamiere Greenaway...
![Page 1: Testing the Tactile Perception of Human Fingers The Dynamic Tactile Tablet (DTT) Chamiere Greenaway & Eric Balfour.](https://reader036.fdocuments.us/reader036/viewer/2022062315/5697c0021a28abf838cc31be/html5/thumbnails/1.jpg)
Testing the Tactile Perception of Human Fingers
The Dynamic Tactile Tablet (DTT)
Chamiere Greenaway & Eric BalfourChamiere Greenaway & Eric Balfour
![Page 2: Testing the Tactile Perception of Human Fingers The Dynamic Tactile Tablet (DTT) Chamiere Greenaway & Eric Balfour.](https://reader036.fdocuments.us/reader036/viewer/2022062315/5697c0021a28abf838cc31be/html5/thumbnails/2.jpg)
MotivationTo make it easier for blind people to access graphical information from a computer
www.abtim.com enablemart.com
www.google.com
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Tactile Sense
Tactile Sense is how we perceive something by touching.
The human finger is able to distinguish a dot that is 1mm in diameter and height.
a
b
c
Braille Specificationsa - ~1.3 mmb - ~2.5 mmc - ~2.5 mmdot height: ~0.5 mm
Schematic of a Braille Cell Module. Picture of the Talking Tactile Tablet.
![Page 4: Testing the Tactile Perception of Human Fingers The Dynamic Tactile Tablet (DTT) Chamiere Greenaway & Eric Balfour.](https://reader036.fdocuments.us/reader036/viewer/2022062315/5697c0021a28abf838cc31be/html5/thumbnails/4.jpg)
ProjectProject
To create a tactile interface from Polydimethylsiloxane (PDMS)
To test tactile interfaces to find the optimum parameters for:
the height the diameter the spacing
of raised dots that will give us the best results for the tactile perception of human fingers.
![Page 5: Testing the Tactile Perception of Human Fingers The Dynamic Tactile Tablet (DTT) Chamiere Greenaway & Eric Balfour.](https://reader036.fdocuments.us/reader036/viewer/2022062315/5697c0021a28abf838cc31be/html5/thumbnails/5.jpg)
Experimental Setup 1) Make mask from modeling clay
2) Pour liquid PDMS over the mask
3) Cure PDMS/Clay assembly at 70°C (PDMS hardens)
4) PDMS is peeled off the mask (inverted structure of initial mask)
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Preliminary ResultsWe created three masks out of Modeling Clay for the testing of :
Height of Dots:
Spacing of Dots:
Diameter of Dots:
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Preliminary Results
![Page 8: Testing the Tactile Perception of Human Fingers The Dynamic Tactile Tablet (DTT) Chamiere Greenaway & Eric Balfour.](https://reader036.fdocuments.us/reader036/viewer/2022062315/5697c0021a28abf838cc31be/html5/thumbnails/8.jpg)
Conclusions & Outlook
• The Modeling Clay can be used as a mask.
• The Modeling Clay is compatible with the PDMS.
• PDMS can be used to create a testing surface.
• In the future, perform measurements to find the optimum height, diameter and spacing.
![Page 9: Testing the Tactile Perception of Human Fingers The Dynamic Tactile Tablet (DTT) Chamiere Greenaway & Eric Balfour.](https://reader036.fdocuments.us/reader036/viewer/2022062315/5697c0021a28abf838cc31be/html5/thumbnails/9.jpg)
Acknowledgements
• Professor Ilona Kretzschmar
• Dr. Sat Battacharya & MSKCC
• Chemical Engineering Students & Staff @ CCNY
• Harlem Children Society