Method for measuring physiological parameter
First Claim
1. A method of measuring a body function parameter of an organism, comprising the steps of:
- directing a beam of phased energy toward the body of the organism at a region thereon which undergoes physical movement in response to a variation in the body function parameter being measured; and
receiving phased energy reflected from said region of the body to produce a received signal corresponding to said physical movement of the body region and thus corresponding to said variations in the body function parameter being measured.
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Abstract
A method for measuring such physiological parameters as pulse rate and respiration without physically connecting electrodes or other sensors to the body. A beam of phased energy, for example microwaves, is directed toward the body of a person at a region thereon which undergoes physical displacement corresponding to variations in the parameter being measured. The phase relationship of the energy reflected from the body is compared with that of the transmitted energy to determine the extent of physical movement of the body region as affected by the parameter being measured. The present method may be used as an overt or covert lie detection technique.
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Citations
10 Claims
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1. A method of measuring a body function parameter of an organism, comprising the steps of:
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directing a beam of phased energy toward the body of the organism at a region thereon which undergoes physical movement in response to a variation in the body function parameter being measured; and receiving phased energy reflected from said region of the body to produce a received signal corresponding to said physical movement of the body region and thus corresponding to said variations in the body function parameter being measured. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of evaluating the response of a person being interrogated, comprising the steps of:
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directing a beam of electromagnetic radiation toward the body of the person at a region thereof which undergoes physical movement in response to a function of the body; interrogating the person; receiving electromagnetic radiation reflected from said region of the body to produce a received signal corresponding to said physical movement of the body region arising from variations in said body function induced by said interrogation. - View Dependent Claims (8, 9, 10)
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Specification