System for determining hazardous substance exposure rate from co

Details System for determining hazardous substance exposure rate from co System for determining hazardous substance exposure rate from co

1992-02-10

1992-11-17

Envall, Jr., Roy N.

Boots, shoes, and leggings

36441303, 128696, 73 3102, G06F 1500

Patent

active

051648989

ABSTRACT:
A device for measuring a rate exposed to deleterious materials comprises a heartbeat sensor for sensing heart rates, a deleterious material sensor for sening concentrations of deleterious materials in the air, a memory for storing the conversion values for converting the heart rates into corresponding respiration rates, and an operation unit. The operation unit counts a heart rate based a heartbeat signal received from the heartbeat sensor, calculates a respiration rate corresponding to the heart rate based on a conversion value read out from the memory, and calculates a rate exposed to deleterious material per unit time based on the calculated respiration rate and a signal respresenting a concentration of the deleterious material which signal is received from the deleterious material sensor.

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Landry, T. D. et al. "Pulmonary physiology and inhalation dosimetry in rats: Development of a method and two examples", Toxicology and Applied Pharmocology, vol. 71, No. 1, Oct. 1983, 72-83.
Rossi, P. et al. "Respiration as a reliable physiological sensor for controlling cardiac pacing rate", Br. Heart J. (England), vol. 51, No. 1, 1984, 7-14.

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