Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection
Patent
1992-12-07
1994-11-29
Swann, Glen
Communications, electrical: acoustic wave systems and devices
Echo systems
Presence or movement only detection
340540, 340541, 340568, 340573, G08B 2100
Patent
active
053696239
ABSTRACT:
For use in detecting the presence of a foreign body in liquid, such as a swimming pool or the like, at least one transducer support is immersed in the swimming pool or other body of liquid to be monitored. The transducer support has a plurality of transducer means mounted on the support which are capable of sending and receiving acoustic energy. The present invention also comprises a control means for sequentially activating the transducers to generate a series of time-spaced acoustic pulses sequentially from the transducers, and a means responsive to changes in a reflected echo pattern received at one of the transducer means for the expiration of a pre-determined time period, and thus indicative of a foreign object in the transmission path for generating an appropriate alarm function such as a visual or audio alarm.
REFERENCES:
patent: 4189722 (1980-02-01), Lerner
patent: 4533907 (1985-08-01), Thatcher
patent: 4571579 (1986-02-01), Woolley
patent: 4604610 (1986-08-01), Baker et al.
patent: 4747085 (1988-05-01), Dunegan et al.
patent: 4853691 (1989-08-01), Kolbatz
patent: 4932009 (1990-06-01), Lynch
Jackson William D.
Rotor Dynamics Americas, Inc.
Swann Glen
LandOfFree
Acoustic pool monitor with sequentially actuated multiple transd does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic pool monitor with sequentially actuated multiple transd, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic pool monitor with sequentially actuated multiple transd will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-78593