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Mote Network

Mote Network. Waylon Brunette Jason Jenks. OVERVIEW. Obtains sensor readings about the plant and mote’s current state. Data packets will be sent over the RFM to a base station (another mote) that forwards packets to a computer. Power is a precious commodity, so conservation is a major goal

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Mote Network

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  1. Mote Network Waylon Brunette Jason Jenks

  2. OVERVIEW • Obtains sensor readings about the plant and mote’s current state. • Data packets will be sent over the RFM to a base station (another mote) that forwards packets to a computer. • Power is a precious commodity, so conservation is a major goal • Convert the system from a routing network to a beacon network, routing to be handled by hubs (Changed due to localization needs)

  3. Overview of Plant Care

  4. Rene Motes • The Berkeley RENE Motes are programmed with TinyOS. • Sensor data is collected using the ADC of the atmel AT90LS8535 chip (on the mote) • RFM transmistter • UART to communicate with serial port

  5. Sensors • photo resistor • thermistor • Irrometer (moisture sensor) • an inductively rechargeable power source

  6. Goals Achieved • Completed programming for the hardware that controls sensors for monitoring plants. • Re-implemented an new ACK system with sequence numbers. • Removed routing system, and replaced with a beacon system • Integrated hardware

  7. Networking • Run length encoding is used to store the information until there is enough information to fill up a data packet. • Added an ack system to ensure data delivery

  8. Power • Power conservation methods • Run length encoding of data • Turning off the irrometer when not in use • Power down of RFM when not in use (has problems with TinyOS)

  9. Difficulties • The Localization research team requested a redesign of the message and network system with one week left to the due date. • Power on Reset does not work properly • Hardware arrived late for integration testing • RFM Power down is appears to have bugs in its TinyOS implementation.

  10. Thanks To • Intel Research, Seattle staff Especially the following: • David Koizumi (with assistance from Howard at Intel, Portland) • Anthony LaMarca

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