Salve! Robert Michel schrieb am Sonntag, den 17. Dezember 2006 um 18:43h:
> To have accurate distance messuring a themomether could help... > but knowing a distance - e.g. the hight of a room, sound could be > used for doing temperature messuring - as an integration of all > temperatures between device and refeletor (or sender and receiver). http://en.wikipedia.org/wiki/Speed_of_sound With quite good mic and speaker not only the strongest "pong" of an audio ping would be usable, also later, more soft "pongs" - so this: > That would make possible to put the Neo1973 on a table and track > the temperature - in case of changing, it could give an alarm > = very simple fire alarm. Not soooo good, because the smoke/fire gas > COx are very dangerous and they could come into the room without > changing the temperatur sinificant - but just as an idea. could observe more than the line device next wall. It could be also a primitive room-movement sensor - accustic character changes when sombebody stands in a room - controll your office/hotel room... Maybe in big rooms (church, hall, museum) would be possible to learn the software where people are - e.g. have expensive TV equipment in one corner and protect it by getting an alert from an ultrasonic sensor when somebody will go there to close... BTW ultrasonic reflection would be in indicator if the device is still in a pocket, or laying on a table... another indicatior to chanage the call/sms/email/chat... profile (how to ring...) rob _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
