Apparatus for measuring calories consumed during sleep

• US 20080071196A1
• Filed: 08/15/2007
• Published: 03/20/2008
• Est. Priority Date: 09/19/2006
• Status: Active Grant

• Current Assignee: Tanita Corporation (Tanita)
• Original Assignee: Tanita Corporation (Tanita)
• Inventors: Izumi, Shuichi
• Granted Patent: US 7,686,772 B2
• Time in Patent Office: Days
• US Class Current: 600/595
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• 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 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/4806 Sleep evaluation A61B5/4821 takes precedence; devices for inducing sleep A61M21/02
• CPC Class Codes: A61B 5/6892 Mats
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: A63B 2230/75 calorie expenditure

Abstract

An apparatus for measuring calories consumed during sleep comprises determination means for determining a breathing/heartbeat oscillation, a body motion and an the intensity of the body motion, coefficient calculation means for calculating a coefficient which is a reference value for calculating calories consumed during sleep, based on the signals in a given period of breathing/heartbeat oscillation and a sleep metabolic rate, consumed calorie calculation means for calculating calories consumed during sleep, based on consumed calories according to the magnitude of each signal and the coefficient, and storage means for storing various arithmetic expressions in advance. Accordingly, the present apparatus makes it possible to acquire calories consumed by the motions of the body of an individual subject in more detail and to measure calories consumed during sleep more accurately.

Claims

1. An apparatus for measuring calories consumed during sleep, comprising:

input means,

detection means,

calculation means,

determination means,

coefficient calculation means,

consumed calorie calculation means, and

storage means,

wherein

the input means inputs the body information of a subject,

the detection means detects body oscillations during sleep,

the calculation means calculates consumed calories based on the body oscillations,

the determination means determines whether each signal of body oscillation during sleep is a signal of breathing/heartbeat oscillation or a signal of body motion and determines the intensity of the body motion,

the coefficient calculation means calculates a coefficient which is a reference value for calculating calories consumed during sleep, based on the signals in a given period of breathing/heartbeat oscillation and a sleep metabolic rate which is obtained based on the input body information,

the consumed calorie calculation means calculates calories consumed during sleep, based on consumed calories according to the magnitude of the signal of breathing/heartbeat oscillation, consumed calories according to the magnitude of the signal of body motion of each intensity and the coefficient,

the storage means stores at least thresholds for making determinations in the determination means, an arithmetic expression for calculating the coefficient and an arithmetic expression for calculating the calories consumed during sleep in advance.

2. The apparatus of claim 1, wherein the consumed calorie calculation means calculates an area formed by the waveform of each signal and a baseline which is a basis for waveform formation as the magnitude of each signal.

3. The apparatus of claim 2, wherein the consumed calorie calculation means calculates consumed calories according to the magnitude of the signal of body motion of each intensity, based on the total of sampling zones for each body motion intensity and the total of the areas.