250 likes | 410 Views
Sensors & Surveillance in Remote and Border Areas. Richard May Myotis Wireless. Topics. The limits to Power The Power hog A new approach. Limitless power …. .. and limits …. Shoot here. SimpleR is better …. > 10 years continuous. Vibration. Colibrys. 9,000,000 measurements.
E N D
Sensors & Surveillance in Remote and Border Areas Richard May Myotis Wireless
Topics • The limits to Power • The Power hog • A new approach
.. and limits …. Shoot here
> 10 years continuous Vibration Colibrys
9,000,000 measurements Proximity Maxbotix
900,000 VGA pictures Images Omnivision
½ - 5 months Radio Leading industrial brand
The easy and the hard EASY: Turn the radio off! HARD: wake up whenever needed
Low power radio operation Sleep Sleep I Wake up and join network WASTED t
Say hello to “chirps” Frequency Signal A f t t Chirp Example (up-chirp) Chirp: • A signal whose frequency increases or decreases with time
The usefulness of chirps The chirp at the transmitter… Attenuated, with noise, at receiver Chirp’s frequency / time relationship Detected signal
CSS Communications System Data Data t
Myotis Beta prototype - actual Tx Tx Tx Tx Tx Rx Rx Rx Rx Rx 2.5 ms t
1-5 years Radio Myotis