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DIGITAL FLOW CONTROL FOR AUTOMATION OF PRECISION AGRICULTURAL SPRAYING

Award Information

Agency:
Department of Agriculture
Branch:
N/A
Award ID:
26887
Program Year/Program:
1995 / SBIR
Agency Tracking Number:
26887
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Capstan Ag Systems, Inc.
101 N KANSAS AVE Topeka, KS 66603-3620
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1995
Title: DIGITAL FLOW CONTROL FOR AUTOMATION OF PRECISION AGRICULTURAL SPRAYING
Agency: USDA
Contract: N/A
Award Amount: $1,987,000.00
 

Abstract:

INACCURACY IN AGRICULTURAL CHEMICAL APPLICATION CAUSES INCREASED PRODUCTION COSTS AND RELEASES UNNECESSARY PESTICIDE AND FERTILIZERS INTO THE ENVIRONMENT. APPLICATION CONTROL IS PRIMARILY A MANUAL OPERATION AND ON-THE-GO ADJUSTMENT OF SPRAY OUTPUT FOR SPRAY TARGET OR TRAVEL SPEED VARIATION IS RARE. HOWEVER, COMMERCIALIZATION AND USE OF ELECTRONIC SYSTEMS FOR SPEED-BASED APPLICATION CONTROL IS INCREASING. TECHNOLOGY ADVANCES FOR LOCAL NAVIGATION AND ELECTRONIC SENSING OF SOIL AND PLANT CHARACTERISTICS ALLOW SPRAYER CONTROL TO BE BASED ON LOCALIZED TARGET REQUIREMENTS AND INSTANTANEOUS SPRAYER CONDITIONS. REGARDLESS OF THE CONTROL STRATEGY, THE SYSTEMS MUST ULTIMATELY ADJUST THE FLOW RATE OF SPRAY EMITTED FROM THE NOZZLES. PRESSURE VARIATION, THE CURRENT TECHNIQUE FOR FLOW CONTROL, CAUSES ADVERSE EFFECTS ON SPRAY PATTERNS AND DROPLET SIZE SPECTRA AND RESULTS IN NON UNIFORM SPRAY DEPOSITION. THIS PROJECT WILL INVESTIGATE A DIGITAL FLOW CONTROL TECHNIQUE USING PULSE WIDTH MODULATION OF FLOW THROUGH STANDARD SPRAY NOZZLES. UNIVERSITY RESEARCH HAS SHOWN THE TECHNIQUE TO ALLOW A WIDE RANGE OF FLOW CONTROL WITHOUT ADVERSE EFFECTS ON SPRAY BEHAVIOR. THE PROPOSED EFFORT WILL ESTABLISH PRACTICAL FEASIBILITY OF THE SYSTEM THROUGH DURABILITY AND FIELD PERFORMANCE TESTING. ADVANTAGES OF THE PROPOSED APPROACH OVER EXISTING FLOW CONTROL SYSTEMS WILL BE DOCUMENTED.

Principal Investigator:

Mr Graeme W Henderson
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Business Contact:

Small Business Information at Submission:

Capstan Systems Inc.
101 N Kansas Ave Topeka, KS 66603

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No