Environmental Instrumentation

ENVIRONMENTAL INSTRUMENTATION

PSC 5000 / 6000; FALL SEMESTER 2007
INSTRUCTOR: Bruce Bugbee and Mark Blonquist
Text: Micrometeorology in Agricultural Systems. Hatfield and Baker. 2005

MAIN TOPICS:

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The physics of signal transduction
How sensors convert an environmental parameter into an electric signal

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Basic electronics needed to connect sensors with dataloggers.

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Data collection and processing
Programming dataloggers to measure sensors

ENVIRONMENTAL PARAMETERS ADDRESSED

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Temperature: air, soil, water. Thermocouples, thermistors, PRTs
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Surface temperature (infrared radiation): canopy, soil, water, snow, roadway infrared radiometers
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Pressure: barometric, water potential transducers, tensiometers
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Humidity: absolute, relative psychrometers, capacitance
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Radiation: solar (shortwave), longwave net, photosynthetic, UV thermopiles, photodiodes (silicon-cells)
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Wind: speed, direction anemometers, heated needles, vanes
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Precipitation: amount, intensity, duration tipping buckets, mass balances
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Soil water content: TDR/TDT, capacitance
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CO2, O2, and other gases: IR absorption, galvanic cells, polarographic cells
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Spectroradiometric imaging of plant canopies: spectroradiometers

Additional Topics:

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Advanced datalogger programming
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Wireless sensors and networks
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Measurement applications: special project on measurements in relation to their thesis project.