Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1994-04-15
1995-11-07
Wieder, Kenneth A.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324715, 340650, 361 42, G08B 2100
Patent
active
054650518
ABSTRACT:
A method for measuring the current flowing through a cow is disclosed. The method uses a four-terminal resistor precision measurement technique to accurately measure the electric current flowing through a cow as a result of voltages found on dairy farms. The four-terminal resistor technique allows the present invention to measure the current without the need to account for unpredictable environmental conditions on the dairy farm that may effect electrical contact resistances. The present invention uses Ohm's Law to determine current by dividing the voltage drop across a conductive path in the cow by the resistance of the conductive path. The elements utilized do not restrict cow movements and allow the cow to move about freely so as to enable dairy farmers to monitor conveniently and continuously for electric currents resulting from stray voltages on the dairy farm without interfering with daily farm activity.
REFERENCES:
patent: 4398188 (1983-08-01), Feigal et al.
patent: 4401055 (1983-08-01), Street et al.
patent: 4468837 (1984-09-01), Nijhuis
patent: 4551633 (1985-11-01), Winter et al.
American Society of Agricultural Engineers, Stray Voltage: Proceedings of the National Stray Voltage Symposium, 1-186, Oct. 10-12, 1984, Syracuse, N.Y. (month unav.).
C. T. Baldwin, Methods of Electrical Measurement, 14-15, 31-32, 1952, London, England (month unav.).
Ernest Frank, Electrical Measurement Analysis, 273-274, 1959, USA (month unav.).
Northeast Regional Agricultural Engineering Service Milking Systems and Milking Management, 34-49, Jan. 13-14, 1988, Harrisburg, Pa.
Melville B. Stout, Basic Electrical Measurements, 80, 1950, USA (month unavailable).
United States Department of Agriculture, Effects of Electrical Voltage/Current on Farm Animals, 1-1 to 9-4, Dec. 1991, USA.
And Yet, Inc.
Tobin Christopher M.
Wieder Kenneth A.
LandOfFree
Four-terminal resistor method for measuring electric current in does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Four-terminal resistor method for measuring electric current in , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Four-terminal resistor method for measuring electric current in will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-199160