Method and apparatus for detecting fish in water

Details Method and apparatus for detecting fish in water Method and apparatus for detecting fish in water

1976-05-19

1978-01-24

Thesz, Joseph M.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

235 92PK, 235 92R, G01R 2702, G06M 1100

Patent

active

040706168

ABSTRACT:
Apparatus for detecting and counting fish in a stream in which three electrodes extend horizontally across the stream and are immersed in the water, the electrodes being connected to form the two arms of an alternating current bridge circuit, the signal output of the bridge being processed to provide a data signal for feeding to a counter or other recording means, the apparatus being arranged so that a fish causes upsetting of the balanced conditions in the bridge, further electrodes connected in an opposite sense providing compensation for wave motion effects on the signal.

REFERENCES:
patent: 2893633 (1959-07-01), Van Haagen
patent: 3223319 (1965-12-01), Lucich et al.
patent: 3439358 (1969-04-01), Salmons
patent: 3509325 (1970-04-01), Rockwell et al.

Affiliated with

Also associated with

Rating

Method and apparatus for detecting fish in water does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for detecting fish in water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting fish in water will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-490249