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

........................................................................................i Acknowledgements ....................................................................................................... ii Executive Summary .......................................................................................................1 1. Introduction .................................................................................................4 2. Background ..................................................................................................6 2.1 ADiR Sensor and IC ....................................................................................6 2.1.1 Capabilities and Specifications ....................................................................8 2.1.2 ADT7301 Bandgap Temperature Sensor ....................................................9 2.1.3 AD7794 24-bit ADC ...................................................................................9 2.1.4 Configuration of the ADiR Sensor ..............................................................9 2.2 IR Thermal Sensors ...................................................................................11 2.2.1 Operation in a Vacuum vs. Operation at Other Pressures .........................13 2.2.2 Response Time ..........................................................................................14 2.2.3 Distance-to-Spot Ratio ..............................................................................15 2.2.4 Array Size ..................................................................................................15 2.3 Applications ...............................................................................................15 2.4 Previous Testing and Software Development ...........................................17 3. Goals and Objectives .................................................................................19 4. Testing Methodology .................................................................................21 4.1. Pressure Experiment ..................................................................................21 4.1.1. Setup of the Pre-Automation Pressure Experiment ...................................22 4.1.2. Procedure for the Pre-Automation Pressure Experiment ..........................25 4.1.3. Pressure Experiment: Automation .............................................................27 4.2. Vacuum Degradation Experiment .............................................................30 4.2.1. Temperature Cycling Test .........................................................................30 4.2.2. Step Response Test ....................................................................................34 4.3. Angular Response Experiment ..................................................................35 4.4.1 Setup of the Angular Response Test ..........................................................36 4.4.2 Procedure for the Angular Response Test .................................................37 4.4. Lens Focusing Experiment ........................................................................38 4.4.1. Setup of the Lens Focusing Experiment ....................................................38 4.4.2. Procedure for the Lens Focusing Experiment ...........................................40 4.5. Qualification Tests .....................................................................................41 4.5.1. Setup of the Qualification Test ..................................................................41 4.5.2. Procedure of the Qualification Test ...........................................................41 5. Results and Analysis ..................................................................................43 5.1. Pre-Automation Pressure Experiment .......................................................43 5.1.1. Pre-Experiment Voltage Regulator Testing ..............................................43 5.1.2. 3x3 Bolometer Theoretical Model vs. 3x3 Experimental Model ..............45 5.1.3. 11x11 Bolometer Theoretical Model vs. 11x11 Experimental Model ......47 5.1.4. 3x3 Bolometers vs. 11x11 Bolometers ......................................................49 5.2. Post-Automation Pressure Experiment ......................................................50 5.3. Vacuum Degradation Experiment .............................................................51 5.3.1. 11x11 Bolometers and Thermopiles ..........................................................51 5.3.2. 3x3 Bolometers ..........................................................................................55 5.4. Angular Response Experiment ..................................................................56 5.5. Lens Focusing Experiment ........................................................................58