System for determining hazardous substance exposure rate from concentration measurement and heart rate data
First Claim
1. A portable device for measuring the rate of exposure of an individual to deleterious materials, comprising:
- a heartbeat sensor for sensing an individual'"'"'s heart rate and for generating a heartbeat signal;
heartbeat pulse converting means for converting said heartbeat signal into a heartbeat pulse signal;
a deleterious material sensor for sensing a concentration of deleterious material in the air and for generating a signal p(t) representing the sensed concentration, where "t" is a time of sensing of said concentration;
memory means for storing conversion values for converting a heart rate e(t) into a corresponding respiration rate b(t); and
an operation unit for calculating a heart rate e(t) based on said heartbeat pulse signal from said heartbeat pulse converting means, for calculating a respiration rate b(t) corresponding to said heart rate e(t) based on a conversion value read out from said memory means, and for calculating a rate m(t) of exposure to deleterious material per unit time based on said calculated respiration rate b(t) and said concentration of deleterious material p(t) from said deleterious material sensor, said rate m(t) being given by ##EQU4##
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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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Citations
10 Claims
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1. A portable device for measuring the rate of exposure of an individual to deleterious materials, comprising:
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a heartbeat sensor for sensing an individual'"'"'s heart rate and for generating a heartbeat signal; heartbeat pulse converting means for converting said heartbeat signal into a heartbeat pulse signal; a deleterious material sensor for sensing a concentration of deleterious material in the air and for generating a signal p(t) representing the sensed concentration, where "t" is a time of sensing of said concentration; memory means for storing conversion values for converting a heart rate e(t) into a corresponding respiration rate b(t); and an operation unit for calculating a heart rate e(t) based on said heartbeat pulse signal from said heartbeat pulse converting means, for calculating a respiration rate b(t) corresponding to said heart rate e(t) based on a conversion value read out from said memory means, and for calculating a rate m(t) of exposure to deleterious material per unit time based on said calculated respiration rate b(t) and said concentration of deleterious material p(t) from said deleterious material sensor, said rate m(t) being given by ##EQU4## - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification