Design of an automated experimentation and data processing software suite for the adir sensor
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Design of an Automated Experimentation and Data Processing Software Suite for the ADiR Sensor. Ryan Hollister Rachelle Horwitz Mandela Kiran. Outline. Introduction Goals of the Project Equipment Pressure Experiment Vacuum Degradation Experiment Qualification Test

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Design of an Automated Experimentation and Data Processing Software Suite for the ADiR Sensor

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Design of an automated experimentation and data processing software suite for the adir sensor

Design of an Automated Experimentation and Data Processing Software Suite for the ADiR Sensor

Ryan Hollister

Rachelle Horwitz

Mandela Kiran


Outline

Outline

  • Introduction

  • Goals of the Project

  • Equipment

  • Pressure Experiment

  • Vacuum Degradation Experiment

  • Qualification Test

  • Angular Response Experiment

  • Lens Focusing Experiment

  • Conclusions

  • Acknowledgements

  • Questions


Introduction

Introduction

  • Currently in our final year of study at Worcester Polytechnic Institute in Worcester, Massachusetts

  • Majoring in Electrical and Computer Engineering with different concentrations

  • Completed our Major Qualifying Project (MQP) at ADI Limerick

    “Demonstrate application of the skills, methods, and knowledge of the discipline to the solution of a problem that would be representative of the type to be encountered in one's career” – WPI


Goals of the project

Goals of the Project

  • Acquire an understanding of IR sensors, the equipment, and the testing procedures

  • Identify areas of the test where software could facilitate the process

  • Create automation software for four experiments

  • Determine the optimal way to display the collected data

  • Develop software to process the raw data into usable excel files and graphs


Equipment

Equipment


Pressure experiment

Pressure Experiment


Pressure experiment methodology

Ensure that the blackbody source and vacuum chamber are properly aligned

Place the part into the vacuum chamber

Manually set the pressure using the vacuum controller

Pressure Experiment: Methodology

Take the step response at different pressures

Manually reduce or increase the pressure using the valve on the vacuum chamber

Plot the sensor’s response against pressure


Pressure experiment pre automation result

Pressure Experiment: Pre-Automation Result


Pressure experiment automation

Pressure Experiment: Automation

  • Controlled the vacuum controller to set pressure using LabVIEW.

  • Used an automatic shutter to provide step input.

  • Reconfigured the PID controller parameters to obtain stability.


Pressure experiment post automation result

Pressure Experiment: Post-Automation Result


Pressure experiment results 3x3 vs 11x11 bolometers

Pressure Experiment Results:3x3 vs. 11x11 Bolometers

  • Confirmed that the 3x3 bolometers respond better than the 11x11 bolometers


Pressure experiment results for the 3x3 bolometer

Pressure Experiment: Results for the 3x3 Bolometer

Theoretical model

Experimental results


Pressure experiment results for the 11x11 bolometer

Pressure Experiment: Results for the 11x11 Bolometer

Theoretical model

Experimental results


Vacuum degradation experiment

Vacuum Degradation Experiment


Vacuum degradation experiment methodology

Vacuum Degradation Experiment: Methodology

  • Measured the effect of storage conditions on the parts’ offsets and sensitivities over time

  • Stored the sensors at room temperature, 0-4oC, and 150oC over a period of 8 days

  • Conducted two sub-tests every 2-3 days

    • Temperature cycling

    • Step response


Vacuum degradation experiment results

Vacuum Degradation Experiment: Results

  • The offsets of the bolometers were more sensitive to changes in vacuum than the offsets of the thermopiles were


Qualification test

Qualification Test


Qualification test automation

Qualification Test: Automation


Qualification test automation1

Qualification Test: Automation


Qualification test automation2

Qualification Test: Automation


Qualification test automation3

Qualification Test: Automation


Angular response experiment

Angular Response Experiment


Angular response methodology

Angular Response Methodology

Rotates the part 180o in front of the black body source

Collects readings from all pixels at each degree interval

Output the raw data

Import the data into Excel and produces graphs


Angular response lens polishing

Angular Response: Lens Polishing

Unpolished

Polished


Angular response automation

Angular Response Automation

Capabilities:

Positioning the sensor prior to testing

Testing of 3x3 or 11x11 arrays

Testing of bolometers and thermopiles

Adjustment to the amount of rotation

Saving collected data to a file


Angular response demonstration

Angular Response Demonstration


Angular response results

Angular Response Results

Angular Response can be measured with 1o accuracy

Results in ~5 minutes

Polishing the lens removed the sensor’s angular response


Lens focusing experiment

Lens Focusing Experiment


Lens focusing experiment methodology

Lens Focusing Experiment: Methodology

y

z

x

Scanning box


Lens focusing automation

Lens Focusing Automation

Blackbody Source

IR Sensor

Focusing Lens


Lens focusing experiment results

Lens Focusing Experiment Results

Since the data is 3D, it is easiest to display it in 2D slices

y axis

z axis

x axis


Conclusions

Conclusions

  • We successfully automated several experiments

    • Pressure experiment: reduced test time per part from 60 minutes of continuous monitoring to 10 minutes of setup

    • Qualification test: reduced the amount of time to create the seven graphs for each part from several minutes to a few seconds

    • Angular response: provided angular response with a high level of accuracy

    • Lens Focusing experiment: successfully obtained the position of the focal point for highest response.


Acknowledgements

Acknowledgements

We would like to thank Analog Devices, Inc. for providing us with a unique opportunity to work with an emerging technology.

We would also like to thank the following people for their continuous encouragement and support: Prof. Rick Vaz, Prof. Rick Brown, John Reidy, Luke Pillans, Brendan Cawley, Eamon Culhane, Claire Leahy, and Bill Lane.


Questions

Questions

  • Thank you for your attention.


Placeholder for supplemental slides

Placeholder for Supplemental Slides


Aging experiment temp forcer results

Aging Experiment Temp. Forcer Results


Pressure experiment voltage regulators

Pressure Experiment: Voltage Regulators


Aging experiment when the parts broke

Aging Experiment: When the Parts Broke


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