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  1. 1. TRIAD’32: Applying 3-Axis Accelerometers as an Input Device for 2D Platform Computer Systems Proponents: Borlaza, Adrian Diaz, Voltaire Lee, Nicolo Tan, George II Adviser: Sir Clement Ong
  2. 2. Overview <ul><li>The system covers the area on three-dimensional motion sensing technology </li></ul><ul><li>applied to the mouse peripheral device </li></ul><ul><li>of a computer. </li></ul><ul><li>Motion sensing with the use of accelerometers is now being implemented in many applications one of which is applied in the Nintendo Wii Controller. </li></ul>
  3. 3. Overview <ul><li>A glove-based user input peripheral device which emulates mouse functions will be developed, called TRIAD 32. </li></ul><ul><li>The heart of the TRIAD 32 is a 3-axis accelerometer used for motion sensing to emulate the 2D mouse cursor. </li></ul>
  4. 4. Problem Statement <ul><li>The traditional user input peripheral device, the mouse, is hard to handle especially outdoors and is difficult to use for free hand drawing applications. </li></ul>
  5. 5. Problem Statement (cont.) <ul><li>With these characteristics, the mouse presents the problem of requiring a flat and smooth platform to effectively move and use the mouse cursor on the screen thus limiting the movement to 2D space only. </li></ul>
  6. 6. General Objective <ul><li>This study aims to develop a three-dimensional user-motion input peripheral device for the two-dimensional mouse movement, interfaced to the hand via a three-finger glove. The device will utilize a 3-axis accelerometer as its basis for mouse functions. </li></ul>
  7. 7. Specific Objective <ul><li>to implement touch buttons in a three-finger glove that can emulate the left, right click, and the drag and drop function of the mouse with an added cursor activation button; </li></ul><ul><li>to have a configuration program where the user can change the different properties of the device such as button settings, sensitivity, and orientation of projected plane; </li></ul>
  8. 8. Specific Objective <ul><li>to capture the 3D movement of the accelerometer and transform this into 2D movement; </li></ul><ul><li>to apply the 2D movement to the 2D mouse interface of a Windows based operating system with any type of resolution; </li></ul><ul><li>to have a resolution of 200-400 Dot per Inch (DPI) which is the most common range for the 2D mouse interface; </li></ul>
  9. 9. Specific Objective <ul><li>to move the mouse cursor with the glove movement uniformly; </li></ul><ul><li>to move the mouse cursor with the movement of the glove with a delay equal to or less than 20 milliseconds which is the standard mouse delay. </li></ul>
  10. 10. Scope and Limitation <ul><li>to allow mouse functions in a glove interface eliminating the flat platform space requirement. </li></ul><ul><li>the TRIAD 32 is only right hand wearable </li></ul><ul><li>it is connected to the computer using the PS/2 port and is a wired system. </li></ul>
  11. 11. Scope and Limitation <ul><li>the 3-axis accelerometer to be used will be relative instead of being absolute. </li></ul><ul><li>the 3-axis accelerometer would be attached to the index finger and would follow the motion of the finger for the cursor movement. </li></ul>
  12. 12. Scope and Limitation <ul><li>the 3D digital data will be captured and transformed to 2-dimensional data which will be applied to 2D mouse interface of the Windows based operating system. </li></ul><ul><li>The resolution of the mouse will be in the range of 200 to 400 Dots per Inch. </li></ul>
  13. 13. Scope and Limitation <ul><li>The main fingers to be used are the index finger for left click and activation button, middle finger for right click and the thumb as base. </li></ul>
  14. 14. System Implementation
  15. 15. 3D Accelerometer Module
  16. 16. Filter Module
  17. 17. Experiments <ul><li>Accelerometer Functionality </li></ul><ul><ul><li>Steady Hand Movement </li></ul></ul><ul><ul><li>Single Direction Movement </li></ul></ul><ul><ul><li>Back and Forth Movement </li></ul></ul><ul><li>Hardware Filter Functionality </li></ul>
  18. 18. Results: Experiment 1- A <ul><li>Accelerometer No Movement </li></ul>
  19. 19. Results: Experiment 1- B <ul><li>Accelerometer Single Direction Fast Movement </li></ul>
  20. 20. Results: Experiment 1- B <ul><li>Direction vs. Time Graph for Single Direction Fast Hand Movement </li></ul>
  21. 21. Results: Experiment 1- C <ul><li>Accelerometer Back and Forth Fast Movement </li></ul>
  22. 22. Results: Experiment 1- C <ul><li>Direction vs. Time Graph for Back and Forth Fast Hand Movement </li></ul>
  23. 23. Results: Experiment 2 <ul><li>Raw and Filtered Signal Results </li></ul>Filtered Signal Raw Signal
  24. 24. Demonstration
  25. 25. TRIAD’32: Applying 3-Axis Accelerometers as an Input Device for 2D Platform Computer Systems Proponents: Borlaza, Adrian Diaz, Voltaire Lee, Nicolo Tan, George II Adviser: Sir Clement Ong

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