Apparatus and method for estimating fatigue level
First Claim
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1. A fatigue-level estimation apparatus comprising:
- a heart rate calculator configured to receive a signal indicative of a heartbeat of a person to be estimated to calculate a heart rate signal changing sequentially in time; and
a fatigue level estimator configured to estimate a fatigue level of the person by detecting a sharp and transient rise in the heartbeat in the heart rate signal calculated by the heart rate calculator.
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Abstract
A fatigue-level estimation apparatus is provided. The apparatus comprises a heat rate calculator and a fatigue level estimator. The heart rate calculator receives a signal indicative of a heartbeat of an object to be estimated to calculate a heart rate signal changing sequentially in time. The fatigue level estimator estimates a fatigue level of the object by detecting a sharp and transient rise in the heartbeat in the heart rate signal. The fatigue-level estimation has less influence resulting from individual differences, while still maintaining high reliability in the estimation.
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Citations
17 Claims
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1. A fatigue-level estimation apparatus comprising:
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a heart rate calculator configured to receive a signal indicative of a heartbeat of a person to be estimated to calculate a heart rate signal changing sequentially in time; and a fatigue level estimator configured to estimate a fatigue level of the person by detecting a sharp and transient rise in the heartbeat in the heart rate signal calculated by the heart rate calculator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A fatigue-level estimation method comprising the steps of:
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receiving a signal indicative of a heartbeat of a person to be estimated to calculate a heart rate signal changing sequentially in time; and estimating a fatigue level of the person by detecting a sharp and transient rise in the heartbeat in the calculated heart rate signal. - View Dependent Claims (11, 12, 13, 14)
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15. A computer-readable program for estimating a fatigue level, the program being executed by a computer provided in a fatigue-level estimation apparatus, the computer achieving the functions of:
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heart rate calculating means for receiving a signal indicative of a heartbeat of a person to be estimated to calculate a heart rate signal changing sequentially in time; and fatigue level estimating means for estimating a fatigue level of the person by detecting a sharp and transient rise in the heart rate in the heartbeat signal calculated by the heart rate calculating means. - View Dependent Claims (16, 17)
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Specification