BIOMETRIC APPARATUS

• US 20120232413A1
• Filed: 02/02/2012
• Published: 09/13/2012
• Est. Priority Date: 03/07/2011
• Status: Abandoned Application

• Current Assignee: Tanita Corporation (Tanita)
• Original Assignee: Tanita Corporation (Tanita)
• Inventors: SHIOTA, Takayuki, SATO, Tomio
• Application Number:
  US13/364,866
• Publication Number:
  US 20120232413A1
• Time in Patent Office: Days
• US Class Current: 600/500
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/02411 of foetuses
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/222 combined with detection or measurement of physiological parameters, e.g. heart rate
• CPC Class Codes: A61B 5/4866 Evaluating metabolism A61B5/083 takes precedence

Abstract

A biometric apparatus includes an instruction issuing unit configured to issue an instruction to an object person to be measured to execute a predetermined state; a pulse sensor configured to measure a pulse rate in the predetermined state; a consumed energy measuring unit configured to measure a consumed energy in the predetermined state; and a biological data calculating unit configured to define a relational expression of the consumed energy with respect to a predetermined pulse rate of the object person to be measured on the basis of the pulse rate measured by the pulse sensor in the predetermined state and the consumed energy measured by the consumed energy measuring unit at the measured pulse rate, and calculate biological data of the object person to be measured on the basis of the defined relational expression.

Claims

1. A biometric apparatus comprising:

an instruction issuing unit configured to issue an instruction to an object person to be measured to execute a predetermined state;

a pulse sensor configured to measure a pulse rate in the predetermined state;

a consumed energy measuring unit configured to measure a consumed energy in the predetermined state; and

a biological data calculating unit configured to define a relational expression of the consumed energy with respect to a predetermined pulse rate of the object person to be measured on the basis of the pulse rate measured by the pulse sensor in the predetermined state and the consumed energy measured by the consumed energy measuring unit at the pulse rate, and calculate biological data of the object person to be measured on the basis of the relational expression.

2. The biometric apparatus according to claim 1, wherein the instruction issuing unit issues an instruction to execute at least a first state, a second state which is a state of action applying a load larger than that of the first state, and a third state which is a state of action applying a load larger than that of the second state in sequence as the predetermined state, and the biological data calculating unit defines the relational expression by acquiring an approximated straight line on the basis of three points, namely, a pulse rate and a consumed energy of the object person to be measured in the first state, a pulse rate and a consumed energy of the object person to be measured in the second state, and a pulse rate and a consumed energy of the object person to be measured in the third state.

3. The biometric apparatus according to claim 2, wherein if the difference between the pulse rate of the object person to be measured in the first state and the pulse rate of the object person to be measured in the second state is a predetermined threshold value or smaller, the instruction issuing unit issues an instruction to execute a state of action applying a load larger than that applied in the state of action to be instructed if the difference is larger than the predetermined threshold value as the third state.

4. The biometric apparatus according to claim 1, further comprising a data input unit configured to be capable of entering data such as age, sex, body weight, and lean body mass of the object person to be measured, wherein the consumed energy measuring unit includes an acceleration sensor configured to be capable of detecting an acceleration value of a body movement of the object person to be measured, and calculates the consumed energy on the basis of the acceleration value of the body movement detected by the acceleration sensor and the data such as age, sex, body weight, and lean body mass entered by the data input unit.

5. The biometric apparatus according to claim 4, wherein if the lean body mass entered by the data input unit is larger than a predetermined reference value, the instruction issuing unit issues an instruction to execute a state of action applying a load larger than that of the state of action to be instructed if the lean body mass is a predetermined reference value or smaller as the second state and/or the third state.

6. The biometric apparatus according to claim 1, wherein if the fact that the change of the pulse rate of the object person to be measured in the predetermined state falls within a predetermined range is detected during the period of execution in which the predetermined state is continuously executed, the instruction issuing unit issues an instruction to terminate the execution of the predetermined state before the elapse of the period of execution, and if the fact is not detected, the instruction issuing unit issues an instruction to terminate the execution of the predetermined state after the period of execution has elapsed.

7. The biometric apparatus according to claim 1, wherein the instruction issuing unit issues an instruction to execute a state of action executed continuously for a predetermined period in the same content as the predetermined state, and the biological data calculating unit defines the relational expression by acquiring the approximated straight line on the basis of the pulse rate and the consumed energy of the object person to be measured in the predetermined state measured by a plurality of times during the predetermined period.

8. The biometric apparatus according to claim 1, wherein the biological data calculating unit calculates a value EE(75% HRmax) of the object person to be measured on the basis of the relational expression as the biological data, and calculates a value VO₂(HRmax) of the object person to be measured by applying the value EE(75% HRmax) to an expression expressing a correlation between the value EE(75% HRmax) and the value VO₂(HRmax).

9. The biometric apparatus according to claim 8, wherein the biological data calculating unit determines the physical strength of the object person to be measured from the value of VO₂(HRmax) of the object person to be measured, the sex and the age of the object person to be measured, and displays the result of determination on a display unit.

10. The biometric apparatus according to claim 1, wherein the biological data calculating unit calculates the consumed energy according to the pulse rate by applying the pulse rate of the object person to be measured acquired by the pulse sensor to the relational expression as the biological data.