sensors role in agriculture prepared by ryan turner
TRANSCRIPT
SENSORS ROLE IN AGRICULTUREPrepared by Ryan Turner
Introduction
• What is a sensor• Common Types of Agricultural Sensors
• Yield Monitor• GreenSeeker®
• Veris® • EC• pH
• Sensor uses• Conclusion
What is a sensor?
• Sensor: “a device that responds to a physical stimulus (as heat, light, sound, pressure, magnetism, or a particular motion) and transmits a resulting impulse (as for measurement or operating a control)”
http://www.merriam-webster.com/dictionary/sensor
Yield Monitor• Mass flow
• Uses a force sensor to measure impact of grain on pressure plate over time
• Optical• Uses laser to measure grain
flow
• Weight• Uses a force sensor to measure
impact of grain on pressure plate
• Capacitance (Not a yield monitor)• Used to check moisture content http://www.bae.uky.edu/precag/PrecisionAg/Exten_pubs/pa1.pdf
GreenSeeker®
• Measures NDVI• Ranges from 0-1
• NDVI is calculated by • NDVI =
• NDVI can be used to tell the health of the plant
http://www.cropoptics.com.au/Greenseeker.htm
Veris® EC • Used to test soil electrical
conductivity (EC)• One pair of coulter-
electrodes emits a known voltage into the soil, while the other coulter-electrodes receives the signal and measure the time it took to travel and the voltage drop from the signal.
http://www.veristech.com/products/soilec.aspx
http://www.veristech.com/products/soilec.aspx
Veris® pH
http://www.veristech.com/products/soilph.aspx
http://www.veristech.com/products/phdetector.aspx
• On a typical 2.5 acre grid sample, samples are taken 330’ apart. With on-the-go pH mapping approximately 10 times more are taken.
• Three point hitch, pull behind, and four-wheeler attachment are available
Sensors Uses• Yield monitor
• Make yield maps of fields• Break fields into zones for better
management• Know actual yields from fields
• GreenSeeker®
• Make NDVI maps of fields• Be used for on the go nitrogen
application• Plant growth regulator and
harvest aid (cotton)• Can be correlated to most any
parameter that is related to plant health.
• Veris® EC• Make EC maps of fields• Break fields into zones for
better management• Better understand field soil
• Veris® pH• Make pH maps of fields• Have better defined pH maps• Apply variable lime based off
of maps
Conclusion• Without these types of sensors we wouldn’t be as efficient
and effective with crop management practices as we are today.
• These sensors help the farmer and producer better understand their fields and how to manage them.
• With further development of new sensors and bettering the current ones, sensors will be a major key player in precision agriculture in the time to come.
Question?