Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1986-08-15
1988-04-12
Chapman, John
Communications: electrical
Condition responsive indicating system
Specific condition
73493, 73517R, 73DIG3, G01P 1508, G08B 2300, A01K 1500
Patent
active
047377747
ABSTRACT:
An activity sensor which provides an indication of motion caused by changes in acceleration of a person or animal, and wherein such changes of motion are sensed by a movable magnet which is biased to a rest position along a guide. The axis of the path of movement of the movable magnet is substantially parallel to the direction of accelerations of interest. A Hall effect sensor is provided for sensing motions of the movable magnet from its rest position, and it provides an output proportional to these movements.
REFERENCES:
patent: 3129347 (1964-04-01), Tognola
patent: 3769844 (1973-11-01), Skoures
patent: 3867844 (1975-02-01), Shimizu et al.
patent: 4234876 (1980-11-01), Murai
patent: 4311051 (1982-01-01), Eon et al.
patent: 4561299 (1985-12-01), Orlando et al.
Brochure by Runtronics Incorporated, "RunAlert Impact-Stress Meter, You Shouldn't Be Running Without It!".
Lopez, Michael D. et al., "Easy Steps to Safer Running With RunAlert Impact-Stress Meter," pp. 1-10.
Technology and the Scientist, Proceedings of the 1985 Arctic Science Conference, "Measurement of Activity--An Example of Microcomputers in Animal Collars for Data Collection and Retrieval," Sep. 27-29, 1985, p. 54.
Montoye, Henry J. et al., "Estimation of Energy Expenditure by a Portable Accelerometer," Medicine and Science in Sports and Exercise, vol. 15, No. 5, pp. 403-407, 1983.
Gillingham, Michael P. and Bunnell, Fred L., "Reliability of Motion-Sensitive Radio Collars for Estimating Activity of Black-Tailed Deer," J. Wildlife Management 49(4), pp. 951-958, 1985.
Chapman Richard C.
Hamerly Michael E.
Chapman John
CompuCap, Inc.
LandOfFree
Magnet based activity sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnet based activity sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnet based activity sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1432169