The document discusses the potential of energy harvesting for applications with lifetimes of 20+ years. It notes that the owner of energy harvesting technology for long-term data provision will have a unique market position. Several areas are identified where 20+ year applications using energy harvesting could provide benefits, such as maintenance monitoring and long-term storage. Limitations of energy harvesting technologies are discussed as well as examples of existing implementations providing power without batteries for decades.

2. Applications today has a limited lifetime
The owner of +20 years data provision
technology will be
in an unique market position.

3. How long time is 20 years ?
Is this totally outdated and beyond use ?

4. The Little Problem
Systems at sleep consume all the power
Harvest Energy for Sleep time Source: Powercast

5. + 20 Years Applications will make sense in the following areas:
Maintenance
Monitoring
Long term
storage

6. Monitoring

7. Maintenance

8. Long Term Storage

9. Typical Usage
Maintenance
Monitoring
Long term
storage

10. Limitations
100 mW at
2,5 G
1 mW
at
10°C
100 mW
143 mW
20 mW

11. Batteries vs. Super Caps
300 mAh @ 1.2 V = 360 J
10 F @ delta V 2 V = 40 J

12. The Power Conditioner
 Harvest tiny amount's of Energy
 Build of sufficient charge
 Use the Energy in bursts

13. Case: Traffic counting
Approximations are as good as
or better than real values
(reduced noise)

14. Boundary conditions
 Installation
 Start up
 Operation
 Life time for the entire system

15. Times they are changing

16. Best practices
 Keep it simple
 Use 100% time on 20% of the requirements
 Sketch it
 Get user reaction on duty cycled functionality

17. Brunata - DELTA
Energi harvesting
prototype:
The battery was
removed and the circuit
is now driven from the
heat difference between
the radiator and the
room.

18. Bell M412 Pitch Link
• The system was able to transmit realtime data about the stress on
vital components
• No batteries was needed
• Available power exceeded need
300 uW harvested during level flight
250 uW needed for realtime operation
Source: MicroStrain

19. Torro Espacio Madrid
• 4200 Switches which must
be rearranged on demand
• Uses en-ocean motion
harvestere
• Saves 42.000 batteries in
25 years
Source: En-Ocean

20. Powercast Coorporation
Pittsburgh Zoo

21. Structural Health Monitoring in
Los Alamos
• The bridge needs to be
“cleared” after earthquaktes.
• Bridge health can be
monitored by sensors (strain,
ultra sound, etc.)
• Experiments shows that a
0.1F 3.3V C can be charged
in 200s
• Wireless TX and RX 256
bytes (RS-232) 5.2 m
LA-14314-MS Feb 2007 Los Alamos National Laboratory

22. Benefits from a Early Entry
• You will gain first hands experience
• You will set the std. and be in control in your
market
• The technology is there and you will be able to
influence what there is produced
• You will be able to get all available components
for a while, which will bring you further in front

23. DELTA Energy Harvesting
Expertise
We have the required knowledge about:
 Mechanical Design
 Thermo dynamics
 Micro-Electronic
 Embedded Software
And we are used to combine the expertices

24. It is possible
Thomas Sørensen
ths@delta.dk