Transcript Team Parro
Team Parro Project HUSP Team Members • Jason Rollins – Project Manager / Electrical Design • Shawn Mullins – Thermal Design / Construction • Josh Hignight – Mechanical Design / Construction • Tim Butler – Software Design Project Proposal • Using a humidity, UV, and temperature sensor, Team Parro will plot a graph of humidity vs. altitude, UV vs. altitude, UV vs humidity, and attempt to determine the height of the region know as the “ozone layer”. Humidity Humidity and Temperature Dependence NASA’s UARS Project Present Data on Humidity vs. Altitude Humidity Sensor Honeywell Sensors UV Sensor • No specific sensor chosen • Issues such as plastic film availability must be addressed • Will the plastic affect the amount of UV that reaches the sensor? • A plastic window may not be a viable option. If so, a UV sensor more resistant to temperature will need to be acquired Design The payload will consist of two boxes, a UV sensor, humidity sensor, temperature sensor, balloon sat circuit board (includes EEPROM chip, and processor), an analog to digital converter, and a plastic window. The balloon sat circuit board will reside in the smaller box and connect to the sensors through the ADC. Humidity and temperature sensors 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 Basic Electrical Design A VERY basic design of the board and sensor interface Payload Construction Once a UV sensor is agreed upon and the total power is checked, all parts needed will be ordered. Tim will immediately begin working on software development. Once parts begin to come in Josh and Sean will modify already constructed boxes to fit the needs of the sensors. Jason will then work on interfacing sensors with the balloon sat and testing sensors 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 the flight is completed; when the battery power or memory will run out. The payload will then be recovered and the data collected from the EEPROM chip via a serial connection. Data Acquisition and Analysis All data from the flight will be recorded on the EEPROM chip that will be located on the main Balloon Sat circuit board. Care has been taken to ensure that the EEPROM is sufficient for this job. Because all data is stored inside the payload it self, the payload will have to be recovered after the flight is completed. The data will then be taken off of the EEPROM and put on a computer where it will be plotted against altitude using MathCAD software. Project Management Jason Rollins – responsible for electrical work including power consumption, sensor interfacing, electrical design, and balloon sat testing Sean Mullins – Thermal design and acquisition of parts for thermal needs, as well as thermal testing Josh Hignight – Box construction and overall mechanical design Tim Butler – All things software, including RTC operation, sensor data testing and data recovering and ploting Schedule Task Will be completed by Box Construction: Complete Board Construction: Complete Sensor Acquisition: Complete Battery Testing: Complete Sensor/Parts Testing: April 8th 2005 5 Meter Impact Test: April 15th 2005 Interface Sensors w/ Board: April 22nd 2005 Software Debug/test: April 29th 2005 CDR: TBA FFR: TBA Budget Expense Budget Object Price Foam Board: ~$5 Hand Warmers: ~$10 Sensors: ~$125 Electronics: Provided Wire: ~$10 Plastic: ~$10 Batteries: ~$10 Total: ~$160 Weight Budget Object Electronics: Inner Box: Outer Box: Hand Warmers: Battery: Sensors: Total Weight: Weight(g) 67 78.5 112.75 66 20 Negligible 344.25 Max allowable 500 Weight Left 155.75 Sources for Facts and Figures Sensor http://content.honeywell.com/sensing/prodinfo/humiditymoisture/009012_2.pdf http://www.sensorsmag.com/articles/0701/54/main.shtml Science http://www.igac.noaa.gov/newsletter/21/measurements.php http://www.es.lancs.ac.uk/casestud/case13.htm http://www.indiana.edu/~climate/g470/Lectures/Humidity/MoistAir.html http://www.indiana.edu/~climate/g470/Lectures/Humidity/MoistAir.html http://www.grida.no/climate/ipcc_tar/wg1/080.htm NASA related projects and info http://svs.gsfc.nasa.gov/stories/humidity_20040315/index.html http://msis.jsc.nasa.gov/sections/section05.htm http://science.hq.nasa.gov/missions/satellite_25.htm http://aqua.gsfc.nasa.gov/ http://earthobservatory.nasa.gov/ http://www.nasa.gov/home/hqnews/2003/dec/HQ_03394_water_map.html http://www.nasa.gov/home/hqnews/2004/mar/HQ_04090_satellite_finds_warming.html http://www.nasa.gov/centers/dryden/pdf/88488main_H-2147.pdf End Questions ?