Method and apparatus for measuring a water condition

Details Method and apparatus for measuring a water condition Method and apparatus for measuring a water condition

1986-03-31

1987-12-22

Ruehl, Charles A.

Measuring and testing

Meteorology

Electric disturbance

73187, 374136, 43 4, G08C 1900, H04B 346

Patent

active

047139676

ABSTRACT:
A method for measuring a water condition such as temperature or speed proximate a desired location in the water such as near a fishing bait. The method comprises positioning a sensor for the condition near the location which provides a signal proportional to the condition, modulating a high frequency radio signal using the electrical signal, transmitting the modulated signal along a conductive line, detecting the modulated signal and using the detected signal to drive an observable indicator of the condition. The invention also includes an apparatus for practicing the method of the invention. The apparatus includes a sensing means, a modulating means, a transmitting means, a detecting means and a means for converting the detected signal to an observable indication of the condition.

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J. L. Riley, "A Digital Frequency-to-Temperature Converter . . . ", IEEE Trans. Biomed. Eng., vol. BME 26, No. 11, Nov. 1979, pp. 630-634.

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