Portable Electronic Toolbox


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The Portable Electronic Toolbox. A small palm computer device containing a variety of sensors for environment control and evaluation in real time or for later computer analysis.

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Portable Electronic Toolbox

  1. 1. Portable Electronic Toolbox Supervisor: Boaz Mizrachi (Zoran) ‏
  2. 2. Project Goal <ul><li>A handy portable tool to an engineer </li></ul><ul><li>That can sense its environment </li></ul><ul><li>And do diverse functions </li></ul>computer
  3. 3. PET Features <ul><ul><li>Portable & user friendly </li></ul></ul><ul><ul><li>Low-priced </li></ul></ul><ul><ul><li>Versatile & multi-purposed </li></ul></ul><ul><ul><li>Measure and display results instantly </li></ul></ul><ul><ul><li>Store data for later re-evaluation </li></ul></ul><ul><ul><li>Control over environment </li></ul></ul><ul><ul><li>Customization and extension of feature-set in HW & SW </li></ul></ul>
  4. 4. System Block Diagram
  5. 5. Development Flow <ul><ul><li>Mechanical design in a 6.1x10x2.5cm box + 3D model </li></ul></ul><ul><ul><li>Electrical design </li></ul></ul><ul><ul><li>Layout </li></ul></ul><ul><ul><li>Manufacturing the electrical card </li></ul></ul><ul><ul><li>Hardware assembly + testing </li></ul></ul><ul><ul><li>Manufacturing the box </li></ul></ul><ul><ul><li>Software development environment </li></ul></ul>Technion work shop
  6. 7. Software Development Environment Applications Operating system Drivers Hardware Receive analogic signals Sensors, LCD, keyboard Main Software Software #1 Software #2
  7. 8. Operating System <ul><li>PET voltage shows battery value. </li></ul><ul><li>Amplifiers open automatically when needed. </li></ul><ul><li>Amplifiers and all related sensors turn off when temperature sensor is on. </li></ul><ul><li>Each menu has different sensors according to what is assembled on its board. </li></ul>
  8. 9. Future Applications <ul><li>GUI for PC </li></ul><ul><li>IR - remote control </li></ul><ul><li>IR + microphone – volume control </li></ul><ul><li>Optic – digital ruler </li></ul><ul><li>Optic – OCR </li></ul><ul><li>Accelerometer – digital leveler </li></ul><ul><li>Accelerometer – angle gauge </li></ul><ul><li>UV + buzzer – high radiation indicator </li></ul>
  9. 10. Our personal gains <ul><li>Handling a variety of different issues and integrating them. </li></ul><ul><li>Approaching a problem from various sides and knowing where to look for quick and efficient solutions. </li></ul><ul><li>Accompanying a project from an idea to final complete product. </li></ul>
  10. 11. The PET
  11. 12. Try It Yourself! <ul><li>PET #1 – motion detector </li></ul><ul><ul><li>Press red button to open and play! </li></ul></ul><ul><li>PET #2 – orientation detector </li></ul><ul><ul><li>Press red button to open. Press number 1 on keyboard and change PETs’ orientation </li></ul></ul><ul><li>PET #3 – temperature </li></ul><ul><ul><li>Press red button to open. Press number 6 on keyboard </li></ul></ul>
  12. 14. Accelerometer A micro-machined device measuring static acceleration. Output voltage alternates according to 3 dimensional axis.
  13. 15. Pressure A silicon sensor measuring absolute pressure. Output voltage can be converted to pressure by: פישבך קומה 13 פישבך קומה 1
  14. 16. UV Sensor A “Schottky” photodiode for UV sensing. The sensor is brought to the surface of the box in order to efficiently absorb all UV rays. Max value in full UV exposure is 3.3. Shadow Through window Full sun light
  15. 17. IR IR transmitter/receiver. Receiving function is checked using ISR due to high frequencies.
  16. 18. Magnetic Sensor Measures the earths’ magnetic field. Nickel-iron strips change their voltage in presence of a magnetic field. Output voltage alternates according to 2 dimensional axis.
  17. 19. Optic Sensor A CMOS optic sensor that decides on direction of movement by taking 1700 frames per second and comparing them. The sensor needs an external led and prism to work. Output voltage (“1”/”0”) needs to be processed in a state machine. 2 outputs for each direction.