OPS - Energy Harvesting

1
OPS - Energy Harvesting

• Name Alex Phipps 11/28/2005
• Goals
• Create PCB for power processor (solar).
• Come up with test plan for solar processor.
• Find solution to PGate problem.
• Key accomplishments.
• Power processor PBC designed in Protel.
• Key issues
• Shengwen is leaving, and there is still a lot of
  information to cover.
• Next steps
• Mill PCB and test solar board/chip
• The new chips (on order) have more test pins.
• Isolate PGate problem better.
• Design the board for the solar cell array.

2
Multi-Node Design

• One goal for the next NASA presentation is to
  construct a multi-node sensor demonstration.
• Each node will contain all of the components
  needed (uP, Tx, power processor, sensor, etc)

3
Single Node Design

• The final node design will comprise both solar
  and PZT energy harvesting components

• Preliminary designs will first be debugged for
  nodes with an individual power source (solar or
  PZT)
• Another reason for this approach is our
  current limitation on PZT sources and solar
  cells.

4
Single Node Layout

• For the first version(s) of the node block,
  several circuit boards will be designed one for
  each component.
• This will ease with debugging, especially since
  we are integrating a new transmitter design.
• The boards will be made in such a way that they
  can be connected by small jumper wires. (unlike
  the birds nest used in the first demo)

5
Solar Power Processor Board

• The Solar Power Processor will include the IC,
  super cap, external diode, test connections, and
  a jumper to attach the solar cells.
• The solar cells are not directly attached to the
  Power Processor Board because we have a limited
  supply and they cannot be easily removed.
• Instead, a solar array will be placed on another
  board that will directly attach to this board.