Intelligent data acquisition system for continuous measurements of soil moisture in the field

Persistent Link:
http://hdl.handle.net/10150/278271
Title:
Intelligent data acquisition system for continuous measurements of soil moisture in the field
Author:
Moreno-Urquiza, Magdalena, 1967-
Issue Date:
1993
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A data acquisition system to collect soil moisture readings at 60 field locations was developed. The system predicted a resistance value from a measured counts per time. An error was associated with the measured counts and time, however, this error was minimized by increasing the time for resistance measurement. The effect of temperature was minimized by an automatic calibration of the system before collecting readings. The Watermark electrical resistance moisture sensor was used to sense water content. The system, including eight sensors, was tested in the field. The data collected was difficult to explain. An evaluation of the Watermark sensors indicated a large variation from sensor to sensor, and also indicated a marked influence of soil texture on sensor resistance.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Agriculture, Agronomy.; Engineering, Agricultural.; Engineering, Electronics and Electrical.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College
Degree Grantor:
University of Arizona
Advisor:
Jordan, Kenneth A.; Slack, Donald C.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleIntelligent data acquisition system for continuous measurements of soil moisture in the fielden_US
dc.creatorMoreno-Urquiza, Magdalena, 1967-en_US
dc.contributor.authorMoreno-Urquiza, Magdalena, 1967-en_US
dc.date.issued1993en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA data acquisition system to collect soil moisture readings at 60 field locations was developed. The system predicted a resistance value from a measured counts per time. An error was associated with the measured counts and time, however, this error was minimized by increasing the time for resistance measurement. The effect of temperature was minimized by an automatic calibration of the system before collecting readings. The Watermark electrical resistance moisture sensor was used to sense water content. The system, including eight sensors, was tested in the field. The data collected was difficult to explain. An evaluation of the Watermark sensors indicated a large variation from sensor to sensor, and also indicated a marked influence of soil texture on sensor resistance.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectAgriculture, Agronomy.en_US
dc.subjectEngineering, Agricultural.en_US
dc.subjectEngineering, Electronics and Electrical.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorJordan, Kenneth A.en_US
dc.contributor.advisorSlack, Donald C.en_US
dc.identifier.proquest1352307en_US
dc.identifier.bibrecord.b26931667en_US
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