ZigBee Wireless Soil Moisture Sensor Design for Vineyard ...

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Acknowledgement In completing this research I received help from a number of people. First I must thank my supervisor Dr John Collins for his support, guidance and advice during the course of this investigation. I must also thank AUT technician Brett Holden who guided and advised me with analogue circuit design. Finally, thanks to my friends and family for their support during the course of my research. i
Statement of Originality ‘I hereby declare that this submission is my own work and that, to the best of my knowledge and belief, it contains no material previously published or written by another person nor material which to a substantial extent has been accepted for qualification of any other degree or diploma of a university or other institution of higher learning, except where due acknowledgement is made in the acknowledgements.’ Achala Perera 31/05/ 2010 ii
Page 1: ZigBee Wireless Soil Moisture Senso
Page 5 and 6: Abstract The soil moisture level is
Page 7 and 8: 6.4.2 PCB Design Version Two ......
Page 9 and 10: Figure 46: Low Pass Filter and Comp
Page 11 and 12: 1 Introduction Wireless Sensor Netw
Page 13 and 14: 2 Literature Review 2.1 Wireless Se
Page 15 and 16: IEEE 802.15.4 networks can be separ
Page 17 and 18: The cluster tree topology is a spec
Page 19 and 20: Figure 6: Standard Technology Map [
Page 21 and 22: 2.2 Currently Available ZigBee Devi
Page 23 and 24: the supplied ZigBee stack is that m
Page 25 and 26: determine the soil moisture content
Page 27 and 28: 2.3.4 Tensionmeter A tensiometer is
Page 29 and 30: 3 Vineyard Monitoring and Managemen
Page 31 and 32: Web Server Database Server Server L
Page 33 and 34: EW . e . T T For the temper
Page 35 and 36: Heaters: This is the only method, w
Page 37 and 38: Sprinklers: Relatively warm water g
Page 39 and 40: Figure 23: Bud-break Out to Bloom S
Page 41 and 42: 4 Objective and Methodology The mai
Page 43 and 44: and heat pulse readings for calibra
Page 45 and 46: etter stability with respect to sup
Page 47 and 48: 5 Wireless Sensor Network (ZigBee M
Page 49 and 50: 5.2 Hardware Design The hardware im
Page 51 and 52: simple differential interface to th
Page 53 and 54:
Figure 31: CC2430 Microcontroller M
Page 55 and 56:
sensor readings are obtained via th
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5.2.4 USB Coordinator Dongle Module
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functionality. This process allows
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5.4 WSN Embedded Software Figure 38
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config.idleTimeout = 50; config.rx.
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frequency caused by introducing wat
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1 1 2 1 2 1 1 2 B E C Figure 42: Cl
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oscillation characteristic. Tempera
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The input signals are sinusoidal wa
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+5V GND C19 0.1uF U6 8 Vcc Out 1 EN
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comparator reference clock circuit,
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6.5 Enclosure Design and Fabricatio
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Figure 53: Sensor Initial Calibrati
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Total Volume = 432 mL is constant.
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Once data was collected, a third co
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The main reason for the capacitance
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As the capacitance increases, the l
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Capacitance (pF) The moisture value
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In the final software calibration,
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8.2 Hardware and Software Improveme
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8.3 Second Generation Soil Moisture
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than over the whole vineyard. The s
Page 99 and 100:
13. Henebry, G.M. and A.K. Knapp. S
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38. Wallace R., Antenna Selection G
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6V C18 1uF 1 3 1 5 0 0 2 1 2 1 3 1
Page 105 and 106:
104 Sensor module schematics Vs 3 -
Page 107 and 108:
106 Coordinator module schematics G
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108 Appendix B - Soil Moisture Sens
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Soil Moisture senor top/bottom laye
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Software Directory Soil Moisture Se
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