G01B 21/02 (2006.01)
G08B 23/00 (2006.01)
(52) U.S. CI 600/595; 600/587; 702/160;
(58) Field of Classification Search 600/587,
600/592,595; 702/142,149,160; 340/573.1, 340/566, 573.7; 367/135, 136 See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
3,296,587 A * 1/1967 Baker 367/136
FOREIGN PATENT DOCUMENTS JP 06 251264 9/1994
Headon, Robert. "Movement awareness for a sentient environment." Feb. 2003. University of Cambridge, pp. 1-8.*
Primary Examiner—Max Hindenburg
Assistant Examiner—John Pani
(7'4) Attorney, Agent, or Firm—Townsend and Townsend and Crew LLP; Robert J. Decker
The gait monitor system and method provides various basic gait parameters including step count, cadence, and step duration, in addition to its ability to distinguish between normal, limping and shuffling gait modes, as well as determine falls. Moreover, this gait monitor may be provided with additional sensors, e.g. beam break at the beginning and end of a corridor to estimate average walking velocity (with the distance between the beams known or determined); this enables the calculation of additional gait characteristics such as average step length and average stride length. These parameters can additionally be used to detect various gait anomalies and other diagnostic information.
39 Claims, 9 Drawing Sheets