Surgery – Diagnostic testing – Measuring anatomical characteristic or force applied to or...
Patent
1997-01-27
1998-09-15
Hindenburg, Max
Surgery
Diagnostic testing
Measuring anatomical characteristic or force applied to or...
A61B 500
Patent
active
058072837
ABSTRACT:
An electronic device for monitoring the activity of a wearer, his walking speed as well as the distance traversed in a selected time interval. The invention comprises a magnet strapped to a leg of a person or a shoe of a pair, a Hall effect sensor with its associated electronic processing and display accessories mounted on the other leg of the person or the other shoe of the same pair. When the sensor moves past the magnet, the analog Hall output voltage produced by the Hall effect sensor changes. A series of these analog Hall output voltages produced during relative motion of the magnet and the sensor are converted to binary data. A stored program device means is used to analyze the data to yield information about the distance traversed and the speed of relative motion between the magnet and the sensor. Remote means receives analog radiowave signals encoding the digital values permitting distant monitoring of the gait activity of the wearer of the gait activity monitor of this invention. A simplified electronic circuit activates a plurality of display elements whenever there is a relative movement between the magnet and the sensor. By mounting a plurality of magnetic strips on an athletic field track, the activity of a runner wearing a magnetic-sensitive sensor with its electronic computing circuit can be monitored.
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