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

Design Concept Review Background Mission Statement Customers: wants, constraints Benchmarking: system functional Metrics / Target Values Generated Concepts Concept Selection Schedule expected vs. actual Budget

Background Function of a Spray Patternator Problems with current DuPont Patternator: Low Accuracy Human Error Insufficient Resolution High Reset Times Limited To One Nozzle

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.

Prioritized Customer List Dupont Agricultural Research Team Larry Gaultney Ted Lang James Davis George Wicks Dr. Leonard Schwartz Dan Coppens (Anholt Technologies Inc.) Joseph Buckley (Cherry Hill Mercedes)

Top 10 Prioritized Wants 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 with in Lab

Constraints 54” Door Width Safety Guidelines (OSHA,DOSH) Senior Design Project Schedule

Quality Metrics / Target Values

Quality Metrics / Target Values

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

Functional Benchmarking 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

Initial Design Concepts Data 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

Initial Design Concepts Table 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

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

Comparison of Conceptual Designs

Concept Selection Data Acquisition System Pressure Sensors high accuracy (0.5mL) relatively inexpensive (~$27.00) allows for simpler design of water supply system Collection Software LabView compliant with DuPont software/hardware standards Measure allows direct input of data into Microsoft Excel

Concept Selection Table Design: Square channel with aluminum dividing walls simpler construction less splashing 1” spacing of walls gives desired resolution Graduated Cylinders necessary for the use of pressure sensors

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

Material List Table HDPE sheet aluminum sheet 80 graduated cylinders Data Acquisition 80 pressure sensors National Instruments hardware Water system tubing pressure gauges solenoid valves pressure regulator water reservoir Frame aluminum C-channel stock aluminum square stock

Budget Estimated Shop Hours: 100 100 hours X $30/hr 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 $3000.00 $9980.00 $607.71 $816.45 Total = $14,404.16

Schedule

Tentative Spring Schedule Winter Order parts and materials Spring February get final approval from DuPont finish ordering materials/parts March - April wait for parts to arrive machine parts for assembly April - May assemble prototype and test modify design (if necessary)

Summary Final Design Total Cost Expected Completion Date 80 graduated cylinders w/pressure sensors Square collection channels Pressure pot water supply w/solenoid valves LabView and Measure for data acquisition Total Cost ~$15,000 Expected Completion Date April 1999