Project HUSP: Humidity/UV-c Sensor Payload Team Parro Presentation of Flight Results NSBF, Palestine, TX

Team Members Josh Hignight – Project manager and software development Jason Rollins – Responsible for electrical work including power consumption, sensor interfacing, electrical design, and balloon sat testing Matt VanKerhkove – Thermal design and acquisition of parts for thermal needs, as well as thermal testing Tim Butler – In charge of things dealing with constrution

Project Proposal Using a humidity, UV-c, and temperature sensor, Team Parro will plot a graph of absolute humidity vs. altitude, UV-c vs. altitude, and UV-c vs humidity, in a hope to see a spike in absolute humidity at the upper boundaries of the ozone layer due to an increase in UV-c. Using a humidity, UV-c, and temperature sensor, Team Parro will plot a graph of absolute humidity vs. altitude, UV-c vs. altitude, and UV-c vs humidity, in a hope to see a spike in absolute humidity at the upper boundaries of the ozone layer due to an increase in UV-c.

Science Ozone layer ≈ km high Ozone layer ≈ km high UV-c cannot penetrate ozone layer UV-c cannot penetrate ozone layer Temperature rises where the ozone begins Temperature rises where the ozone begins

Science Ozone absorbs UV between 200nm and 310nm Ozone absorbs UV between 200nm and 310nm This breaks up the ozone from This breaks up the ozone from O 3 → O 2 + O The O then forms with water to form two hydroxyl molecules O + H 2 O → 2HO The O then forms with water to form two hydroxyl molecules O + H 2 O → 2HO Each of these OH’s then form with methane, and other pollutants to form water. Each of these OH’s then form with methane, and other pollutants to form water.

Humidity NASA’s UARS Project Humidity and Temperature Dependence Present Data on Humidity vs. Altitude

Sensors HOBO ® HOBO ® Boston Electronic UV sensor JEC.01C Boston Electronic UV sensor JEC.01C

Design The payload consist of two boxes, a UV sensor, HOBO, balloon sat circuit board (includes EEPROM chip, and processor), an analog to digital converter, a 741 op-amp to buffer our UV sensor, and a Lucite window. The balloon sat circuit board resides in the smaller box and connect to the sensors through the ADC. HOBO will be outside of both the inner and outer box, while the UV sensor will remain inside the larger box. Hand warmers will be placed inside the larger box to keep the temperature above the electronics operating temperature.

Payload Construction

Software Our program will read our UV sensor form CH2 of the ADC every 3.25 seconds. After every read, the current address counter will be saved into address 0 of the 24128w6. Before each read, the program will check itself and shut down if there is not enough free space.

Testing

Mission Operations The software will be run and the box sealed. The sensors will then begin collecting data and will continue to do so until recover or when memory is full. The payload will then be recovered and the data collected from the EEPROM chip via a serial connection.

Data Acquisition and Analysis The data will be retrieved by running a program to print out the stored data onto the debug screen. The data will then be copied and pasted into excel where it will be calibrated and plotted.

Budget Foam Board:~$5 Hand Warmers:~$4.50 Sensors:~$132 Electronics: Provided Lucite: Free Wire: ~$10 Batteries:~$20 Total:~$160 Expense Budget ObjectWeight(g) Electronics:107 Inner Box:78.5 Outer Box: HOBO20 Hand Warmers:66 Battery:60 Lucite20 Sensors:Negligible Total Weight: ObjectPrice Weight Budget EEPROM: 40mA ADC: 15mA 24128w w6 :3m UV sensor:none Total mA58mA Total running time: 41 hours Power Budget

Sources for Facts and Figures Sensor Science NASA related projects and info ming.html ming.html

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