INDUCTIVE CHARGING OF POWER SUPPLIES FOR WIRELESS SENSOR NETWORKS

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INDUCTIVE CHARGING OF POWER SUPPLIESFOR WIRELESS
SENSOR NETWORKS
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POWER
Author William Lee Supervisor Dr Mark Schulz

• POWER STORAGE
• NiMH Secondary Batteries in parallel with Double
  Layer Capacitors (Gold Capacitors)
• Gold Capacitors with rapid charging and low ESR
• for Pulsed Power delivery to sensor nodes
• Enhanced Battery Performance
• Longer Product Lifetime and Reliability

Large Wireless Sensor networks require a new
power supply design to reduce product
maintenance costs
The design of Inductively Charged Power Supply
for Wireless Sensor Nodes improve battery
charging conveniences (eliminating physical
contact charging and battery replacements) and
improved product damage protection (fully
sealed sensor nodes)

• POWER CONVERSION ELECTRONICS
• DC-DC Converters Resonant Converters
• Zero Voltage Switching and Zero Current
• Switching for Efficient Power Conversion

• INDUCTIVE LINK
• Wireless Power connection
• Power transferred between coupling coils through
  electromagnetic induction
• Convenient Power Transmission with
  reduced Installation costs
• Fully sealed product for protection against
• hazards to improve product lifetime

• SHIELDING
• Shielding reduces Leakage Inductance to reduce
  Instrumental Interference, possible Biological
  effects and Eddy currents