Introduction and Wire Scanner Calibration

BI-BL Students Meeting 23.03.2015

Aleksander Cudny

Technical Student

Warsaw University of Technology

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Introduction

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My thesis – Project and construction of the Breathing Simulator

• Main goal: project and construction of mechanism, that can be used for

somnographs testing (sleep apnea diagnostics)

• Divided into 3 main parts: mechanics, electronics and programming

• Machanics: project in IronCAD, 3D Printer usage, construction of piston pump…

• Electronics: Arduino based project, stepper motor control, sensors readings,

heater circuit…

• Programming: Serial connection, PC application in Python with Qt framework, PID

regulator for heater control…

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Students Science Circle – Muscle Stimulator

• First idea: t-shirt connected to PC or TV, that widens user experience and can be

used in pain relief therapy

• First prototype – glove with electrodes that can stimulate chosen finger

• Keyboard connection and synchronization with music

• Arduino based project with PC application in Python

• Also: examination biological age of ventricles with Arteriograph, control interface via

EMG signals, and more…

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What has been done until today?

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New Wire Scanner Calibration

• LabVIEW – because it will be part of bigger software written in that language

• Beginning: folder with calibration data

• End: calibration curves based on polynomial fit

• Other goals:

• As fast as possible (no more than 60 seconds)

• Preview of the found peaks

• Saving file into .csv later into .clt file

• Conversion into subvi

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Wire Scanner

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Wire Scanner Calibration – outside the machine

Laser Splitter Photodiode

Combiner

Wirescanner

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Method – 1. Window around max value

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2. Low-pass filtering

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3. Derivative

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4. Threshold and finding zeros

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5. Final effect for one file

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6. Calibration curve and polynomial fitting

Polynomial of chosen order

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Program – beginning and plots preview

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Program – choosing polynomial fit and saving

What’s next?

• Conversion into subvi as part of new Wire Scanner

Software

• Saving procedure into .clt format

• Picoscope work

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Thank you for your attention