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US 2010/0294937 A1Published application
Multipoint sensing system
AssigneeLiberty Hardware Mfg. Corp.
InventorsJohn Gerard Finch, Jian Xu
Life of this patent
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Abstract
A self-powered energy harvesting unit/controller receives motion data from one or more self-powered sensors via low power wire. The energy harvesting unit sends signals wirelessly to a system to perform certain functions as a result of received motion signals or the absence of such motion signals.
Claims17
A multipoint sensing system for sensing a parameter, said system comprising:
- a cable,
- a sensor connected to said cable, said sensor sensing the parameter,
- an energy harvesting controller connected to said cable, said controller harvesting energy and receiving signals from said sensor as to an occurrence of the parameter.
A multipoint sensing system for sensing motion, said system comprising:
- a cable,
- a plurality of PIR sensors each connected by said cable, said sensors sensing the motion
- an energy harvesting controller connected to said cable, said controller harvesting energy and receiving signals from said PIR sensors as to an occurrence of motion.
An apparatus for sensing a parameter, said apparatus comprising:
- at least one powered sensor for sensing said parameter, said sensor providing a first signal as to a state of said sensor as relates to said parameter,
- an energy harvesting unit connected said at least one powered sensor, said unit providing power to said sensor, receiving said first signal from said powered sensor, and sending a second signal as to said energy harvesting unit's receipt of said first signal.
A method of sensing motion in an area comprising;
- connecting at least one sensor to an energy harvester,
- placing said sensors in an area to be monitored for a parameter,
- receiving data from said sensors as to a sensing of an occurrence of said parameter and
- harvesting energy to power said sensor.
1 more element
Dependencies are inferred from the claim text.