Lizardnet

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Lizardnet

• A Foundation for Future Research

James Segedy August 10th, 2005
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Acknowledgements

• The Lizardnet Team
• Alejandro Enriquez
• John Hicks
• Kapy Kangombe
• James Segedy
• Advisors
• Mike Erlinger
• Steve Adolph
• Roy Shea (HMC 02)

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James Reserve Conclusion
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Project Goals

• Deploy our very own embedded sensor network
• Retrieve real data from the field and transmit it
  back to HMC

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James Reserve Conclusion
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Deployment Site
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Deployment Site
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The Hardware

• Meet MicaZ
• IEEE 802.15.4 Radio
• Atmel Atmega128 16mHz processor
• 128kB program memory
• 4kB RAM
• 512kB External flash memory
• 51-Pin Expansion Connector

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The Hardware

• Meet MDA300
• 8 Analog inputs
• 8 Digital I/O ports
• Internal Temp/Humidity Sensor
• Internal ADC
• 64kB I2C EEPROM
• Can be used to sense humidity, temperature, soil
  moisture, light, wind speed, wind direction,
  motion, rainfall, leaf wetness, pressure, and
  radiation.

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The Software

• SOS
• Written in C
• A Minimal Static Kernel
• Dynamically loaded and unloaded code modules (no
  reboot required)
• Multiple interacting modules on a single mote.
• Event-driven functionality is controlled
  completely by timers, messages, and states.

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Progress Report

• As of July 15th, we had
• Downloaded, configured, and installed the SOS
  kernel on our 8 MicaZ motes
• Mastered the art of module creation
• Implemented a sample multi-hop network.
• Sampled temperature readings from inside the
  refrigerator.
• Written some driver support for the MDA300

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Progress Report

• As of July 15th, we still needed to
• Deploy the network
• Write the network messages to a file for the
  biologist
• Experiment with power
• And in future years we hoped to
• Learn to sense multiple things at the same time
• Explore multiple sensor interaction

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Since Then

• Finished Writing all Drivers
• Deployed a Sample Network in Sprague
• Deployed a Real Network in the Bernard Field
  Station
• Taken Readings from multiple sensors
• Observed how the pros do it
• Laid the Foundation

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Finished Writing Drivers

• In total, we wrote drivers for
• SHT15 Temp/Humidity Sensor
• ADG715 Analog Switch
• ADS7828 Analog-to-Digital Converter
• 241C64 64k serial EEPROM
• These drivers have been submitted to the SOS code
  base.

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Sample Network Sprague

• Deployment Period 7/21 7/25
• Readings Taken from a Thermistor
• No Power Conservation
• Multiple Hops

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Sample Network Sprague

• July 22nd, 2005

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Network Deployment BFS

• Deployment Period 8/2 8/5
• Readings Taken from both a Thermistor and the
  SHT15
• Basic Power Conservation
• Multiple Hops
• Challenges
• Housing Units
• Temperature

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Network Deployment BFS

• August 3rd, 2005 SHT15

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Network Deployment BFS

• August 3rd, 2005 Thermistor

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The James Reserve

• Location University of California James San
  Jacinto Mountains Reserve
• Sensor Technology used to sense temperature,
  humidity, rainfall, sap flow in trees, wind
  speed, and wind direction.
• Cameras are used to survey bird housings and the
  landscape.

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The James Reserve
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The James Reserve
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The James Reserve
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The James Reserve
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Laying the Foundation

• Lizardnet is a Baby Project
• Further Research Opportunities
• Data Analysis, Database Creation and Maintenance
• Live Reporting
• Permanent Housing
• Power Saving, Power Increasing, and Solar Energy
• Interacting Sensors Cameras
• Signal Boosting and Radio Frequencies
• Continued Research will only reveal new and
  exciting areas to investigate

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