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SENSORS & SURVEILLANCE IN
REMOTE AND BORDER AREASRichard May
Myotis Wireless
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TopicsThe limits to PowerThe Power hogA new approach
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Limitless power ….
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.. and limits …. Shoot here
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SIMPLER IS BETTER …
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Vibration
> 10 years continuous
Colibrys
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Proximity
9,000,000 measurements
Maxbotix
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Images
900,000 VGA pictures
Omnivision
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Radio
½ - 5 months
Leading industrial brand
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Why?
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The easy and the hardEASY: Turn the radio
off!HARD: wake up whenever needed
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Low power radio operation
Wake up and join
network
SleepSleep
t
I
WASTED
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Say hello to “chirps”Chirp:
A signal whose frequency increases or decreases with time
Chirp Example (up-chirp)
Signal
A
tt
Frequency
f
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The usefulness of chirps
The chirp at the transmitter…Attenuated, with noise, at receiver
Chirp’s frequency / time relationship
Detected signal
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CSS Communications System
Data
t
Data
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Myotis Beta prototype - actual
t
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
2.5 ms
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Radio
1-5 years
Myotis
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Flexible Network Topology
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Industrial Version
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Questions?
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Thank you!
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