Body activity monitor using piezoelectric transducers on arms an

Details Body activity monitor using piezoelectric transducers on arms an Body activity monitor using piezoelectric transducers on arms an

1986-03-25

1988-07-12

Smith, Jerry

Boots, shoes, and leggings

128782, 272DIG5, A61B 510, G06F 1542

Patent

active

047574534

ABSTRACT:
Clamping a piezoelectric transducer onto the arm produces a signal whose integration with respect to time corresponds directly to the energy produced by the arm's movement. By clamping four (4) such transducers onto the body, one on each arm and one on each leg, the total integration of the four (4) signals gives a measure of the total energy spent in motion by the body. The desired body energy spent can be displayed quantitatively by first converting the integrated signal into a pulse train, then counting the pulses, and then driving a display with the counter's value.

REFERENCES:
patent: 4192000 (1980-03-01), Lipsey
patent: 4353375 (1982-10-01), Colburn et al.
patent: 4409992 (1983-10-01), Sidorenko et al.
patent: 4525074 (1985-06-01), Murakami
Dewhurst, D. J., "Characterisation of Human Limb Movements by Accelerometry", Med. & Biol. Eng. & Comput., vol. 15, Jul. 1977, 462-466.

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