# Team:ESBS-Strasbourg/Results/Device

(Difference between revisions)
 Revision as of 17:58, 25 October 2010 (view source)Georgio (Talk | contribs)← Older edit Latest revision as of 16:35, 27 October 2010 (view source)Georgio (Talk | contribs) (26 intermediate revisions not shown) Line 363: Line 363:
• Modeling
• Modeling -
• Lighting device
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• Microfluidics
• Microfluidics +
• Lighting device
• Lab-book
• Lab-book Line 385: Line 386:
• -

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HUMAN PRACTICE

HUMAN PRACTICE

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Lighting device
Lighting device
Line 478: Line 479: 1. Introduction 1. Introduction

- 2. Behavioral model + 2. Printed circuit board

- 3. Signal flow model + 3. Microcontroller software

- 4. Conclusion + 4. Computer software

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+ Let me guide you

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1. Introduction
1. Introduction
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+ To make the characterization of our biological system we developped a lighting device which can be controlled from a computer. The goal of this device is to create red and infrared pulses which period and duration are fixed by the user in a computer interface. +
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+ The lighting part of the device is composed of two parts: +
+ • A LEDs band which is composed of four red LEDs put alternately with four infrared LEDs and used to enlighten a tube +
+ • A box subdivided into a 3-by-3 matrix of compartments, each one containing a red and an infrared LED and used to enlighten independently nine biological materials +
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+ These two parts are represented on the following scheme: +
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2. Behavioral model
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2. Printed circuit board
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+ The following picture explains the different components used: +
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+ And here is the list of the corresponding components used: +
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+ • A1, A2, A3, B1,  B2 , B3, C1,  C2 and C3: LEDs connectors +
+ • B1: LEDs band connector +
+ • Q1: quartz 4 MHz +
+ • PIC: Microchip PIC 18F452 +
+ • MAX: MAX232 +
+ • DB9: DB9 connector +
+ • PB: reset button +
+ • P1: power connector (9 V) +
+ • P2: 78L05L voltage regulator (5 V) +
+ • R1: LEDs resistors (100 Ω) +
+ • RC1: resistor (10 kΩ) and capacitor (100 nF) for the reset +
+ • C1: quartz capacitor (33 pF) +
+ • C2: power decoupling capacitor (33 nF) +
+ • C3,C4,C5,C6: MAX232 capacitors (10 µF) +
+ • C7: 78L05L capacitor (330 nF) +

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3. Signal flow model
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3. Microcontroller software
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+ The microcontroller used is a Microchip pic 18F452 which is easily programmable in C language with MPLAB combined to a C18 compiler. The link between the computer and the microcontroller is carried through the serial port. +
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+ And here are the source files of the software:
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4. Conclusion
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4. Computer software
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+ We developped the computer software with Microsoft Visual C++. You can download Express version at this address: +
+ http://msdn.microsoft.com/fr-fr/express/default.aspx +
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+ The following picture illustrates the software interface: +
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+ And here are the source files:

## Latest revision as of 16:35, 27 October 2010

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ESBS - Strasbourg