Portable Electronic ToolboxPortable Electronic Toolbox

Supervisor: Boaz Mizrachi Supervisor: Boaz Mizrachi (Zoran)(Zoran)

Project GoalProject Goal

A handy portable tool to an engineer

That can sense its environment

And do diverse functions

computer

PET FeaturesPET Features Portable & user friendlyPortable & user friendly

Low-priced Low-priced

Versatile & multi-purposedVersatile & multi-purposed

Measure and display results instantly Measure and display results instantly

Store data for later re-evaluationStore data for later re-evaluation

Control over environmentControl over environment

Customization and extension of feature-set in Customization and extension of feature-set in

HW & SWHW & SW

System Block DiagramSystem Block Diagram

• Mechanical design in a 6.1x10x2.5cm box + 3D model

• Electrical design

• Layout

• Manufacturing the electrical card

• Hardware assembly + testing

• Manufacturing the box

• Software development environment

Development FlowDevelopment Flow

Technion work shop

Software Development Environment

Applications

Operating system

Drivers

Hardware Receive analogic signals

Sensors, LCD, keyboard

Main Software

Software #1 Software #2

Operating System

• PET voltage shows battery value.

• Amplifiers open automatically when needed.

• Amplifiers and all related sensors turn off

when temperature sensor is on.

• Each menu has different sensors according to

what is assembled on its board.

Future Applications

• GUI for PC

• IR - remote control

• IR + microphone – volume control

• Optic – digital ruler

• Optic – OCR

• Accelerometer – digital leveler

• Accelerometer – angle gauge

• UV + buzzer – high radiation indicator

Our personal gains

• Handling a variety of different issues and

integrating them.

• Approaching a problem from various sides

and knowing where to look for quick and

efficient solutions.

• Accompanying a project from an idea to

final complete product.

The PET

Try It Yourself!

• PET #1 – motion detector

• Press red button to open and play!

• PET #2 – orientation detector

• Press red button to open. Press number 1 on

keyboard and change PETs’ orientation

• PET #3 – temperature

• Press red button to open. Press number 6 on

keyboard

Accelerometer

A micro-machined device measuring static acceleration.Output voltage alternates according to 3 dimensional axis.

Pressure

A silicon sensor measuring absolute pressure.Output voltage can be converted to

pressure by:

13פישבך קומה

1פישבך קומה

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

IR

IR transmitter/receiver.Receiving function is checked using ISR due to high frequencies.

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.

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.