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

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

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

4. 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.

5. 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)

6. 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

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

8. Quality Metrics / Target Values

9. Quality Metrics / Target Values

10. 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

11. 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

12. 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

13. 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

14. 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

15. Comparison of Conceptual Designs

16. 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

17. 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

18. 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

19. 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

20. 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 $ $
$607.71
$816.45
Total = $14,404.16

21. Schedule

22. 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)

23. 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