Title:
POOL MONITORING
Document Type and Number:
WIPO Patent Application WO2005045457
Kind Code:
A3
Abstract:
A pool monitoring system includes a hydrophone configured to generate an electrical signal in response to receiving a pressure wave in the liquid of a pool, and a processor configured to receive the electrical signal and generate a trigger signal, when the electrical signal includes a characteristic signature over a time period within a predetermined range of time periods.
Inventors:
HOENIG ROBERT (US)
Application Number:
PCT/US2004/022429
Publication Date:
September 09, 2005
Filing Date:
July 13, 2004
Export Citation:
Assignee:
AQUASONUS LLC (US)
HOENIG ROBERT (US)
HOENIG ROBERT (US)
International Classes:
G08B21/08; G08B29/18; (IPC1-7): G08B23/00
Foreign References:
| US5903218A | 1999-05-11 | |||
| US5959534A | 1999-09-28 | |||
| US5153859A | 1992-10-06 | |||
| US4772876A | 1988-09-20 | |||
| US6127936A | 2000-10-03 |
Other References:
See also references of EP 1599848A4
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