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Automated Spray Patternator

Automated Spray Patternator. Team 14. Kevin M. Agnew Greg Barber David Rubin. Background Customers: wants, constraints Mission Statement Benchmarking: system functional. Metrics / Target Values Generated Concepts Concept Selection Budget material and equipment engineering hours.

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Automated Spray Patternator

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  1. Automated Spray Patternator Team 14 Kevin M. Agnew Greg Barber David Rubin

  2. Background Customers: wants, constraints Mission Statement Benchmarking: system functional Metrics / Target Values Generated Concepts Concept Selection Budget material and equipment engineering hours Design Concept Review

  3. Background • Spray nozzles are used to apply a fluid onto a surface • Each nozzle has a certain distribution pattern Spray Nozzle Fluid

  4. Spray Nozzle Spray Nozzle Fluid Fluid Background • Spray patterns of adjacent nozzles overlap • This overlap region can be used to provide a more uniform spray distribution • A spray patternator allows the spray distribution to be observed

  5. Project Information • Customers : • Larry Gaultney • Ted LangDupont Agricultural Research Team • James Davis • Mission Statement • To develop and test an automatic spray patternator with high accuracy, improved resolution, a minimal amount of human error, test reset time, and allowing superior flexibility.

  6. System Information • Video • System Components • nozzle • spray table • collection tubes • Deficiencies of current DuPont Patternator: • Low Accuracy - High Reset Times • Insufficient Resolution - Human Error • Limited To One Nozzle (insufficient size)

  7. 1. Provide All Desired Outputs 2. Automated Data Collection System 3. Observe interaction of 2 or more Nozzles 4. Comply with Hardware/Software Standards 5. High Accuracy and Resolution 6. Run on Tap Water 7. Be able to test 110° nozzles 8. Modular Design 9. Accurately Locate Nozzle Position 10. Mobile within Lab Prioritized Wants

  8. 54” Door Width Safety Guidelines - OSHA Allowable Weight: 200 lbs./person (Max. Push/Pull Weight) Senior Design Project Schedule Constraints

  9. System Benchmarks • Current DuPont Spray Patternator • Hardi Inc. • Field Patternator • Laboratory Patternator • Transportable Spray Patternator • (Patent) • Spray Systems Co. • Laboratory Patternator Hardi Field Patternator

  10. Collection Software LabView Measure Image Pro Plus Fluid Supply Pressure Regulator Pressure Transducer Solenoid Valves Reservoir Data Collection Method Laser Imaging Flow Rate Float Level Sensor Water Sensitive Paper Table Design Current DuPont table design V-grooved table Functional Benchmarking

  11. Quality Metrics / Target Values

  12. Initial Design ConceptsData Collection Design Function: To measure water distribution • Level Detection (Using graduated cylinders) • Manual Reading • Pressure Sensors • Laser Imaging • Flow Detection • In-Line Flow Meters • Image Acquisition • Filter Paper Flow Meter

  13. Initial Design ConceptsTable and Water Collection Design Function: To capture water being sprayed from nozzle and separate into measurable quantities • 2-Dimensional Design • V-Grooved Table Top • Square Channels (dividing walls) • 3-Dimensional Design • Flat Table (Filter Paper design) • Honeycomb

  14. Reservoir Water Tank Tap Pressure System Water Pump Air Pressure Source with Regulator Test Stop System Solenoid Valves Cylinder Covers Initial Design ConceptsWater Supply System Function: To supply pressurized water to the nozzles

  15. Concept Selection • Water Pressure System • Pressure Pot • air readily available • pressure can be regulated • Solenoid Valves • acts as automatic shut-off • eliminates residual spray • Dial Pressure Gauge • inexpensive • simplifies design

  16. Concept Selection • Table/Frame Design: • Square Channels With Aluminum Dividing Walls • 2.5cm spacing of walls gives desired resolution • low cost for HDPE table material • narrower, square channels reduce splashing • 2’ PVC Collection Tubes (0.602” ID) • allows for the use of pressure sensors • holds >100ml of fluid • clear piping allows user to see fluid level • Aluminum C-Channel / Square Stock • Provides structural support

  17. Concept Selection • Data Acquisition System • Pressure Sensors (80) • high accuracy (0.5mL) • relatively inexpensive ($17.45/ea.) • allows for simpler design of water supply system

  18. Concept Selection • Collection Software • LabView • compliant with DuPont software/hardware standards

  19. Test Results • Continuity/Sensor Integrity Checks: Satisfactory • Calibration Check of Pressure Sensors:  .5ml • Collection Tube Leakage Test: No leakage • Software Operation: Satisfactory • Pattern Check: Satisfactory • Test Reset Time : 3 min (est) • Water Supply System Operability: Satisfactory

  20. Shop Expenses Time(40 man-hrs) Materials Data Acquisition System National Instruments hardware and software Pressure Sensors Structural Materials aluminum C-channel/square stock HDPE sheet Water System Reservoir Regulator/Gauges Solenoids Valves Tubing Budget $2,400.00 $10,759.81 $2330.08 $269.29 Total = $15,759.18

  21. Team Engineering Hours

  22. Summary • Final Design • 80 graduated cylinders w/pressure sensors • Square collection channels • Pressure pot water supply w/solenoid valves • LabView for data acquisition • Total Cost • $15,759.18 • Remaining Tasks • Attach remaining components to frame • Test reset time

  23. Question and Answer

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