Automated Spray Patternator

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
System Benchmarks

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

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 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
Initial Design ConceptsWater 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

3000.00 9980.00 607.71 816.45 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
• 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