Foot exercise motion analysis device during moving exercise
First Claim
1. A foot exercise motion analysis device comprising:
- an acceleration sensor which obtains acceleration signals in plural axis directions corresponding to a motion of a body of a user performing an exercise with cyclically moving feet; and
a processor which is configured to execute operations including;
a vertical acceleration maximum value obtaining processing operation which obtains a first maximum value of an acceleration signal in a vertical direction within a period of one cycle of a foot movement of the user, the acceleration signal in the vertical direction being one of the acceleration signals in the plural axis directions obtained by the acceleration sensor,a searching processing operation which searches for a first change point related to foot landing and takeoff motions of the user in a composite acceleration signal, in a forward direction from a time point of a second maximum value of the composite acceleration signal, and searches for a second change point related to foot landing and takeoff motions of the user in the composite acceleration signal in a backward direction from the time point of the second maximum value, within the period of one cycle, the composite acceleration signal being obtained by combining acceleration signals of at least two of the plural axis directions, anda landing period calculation processing operation which obtains a period of time between the first change point and the second change point as a change point interval, when the first change point and the second change point are detected by the processor in the searching processing operation, and calculates a foot landing period of the user while exercising based on the first maximum value of the acceleration signal in the vertical direction and the change point interval.
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Accused Products
Abstract
In an exercise support device of the present invention, acceleration signals in three axis directions including vertical, longitudinal, and lateral directions corresponding to the motion of a user performing exercise of cyclically moving feet are obtained, and a first maximum value in one cycle of a foot movement in the vertical acceleration signal is obtained. Subsequently, a search is made for first and second change points related to foot landing and takeoff motions in a composite acceleration signal obtained by combining acceleration signals in at least two axis directions, in forward and backward directions of the time point of a second maximum value of the composite acceleration signal, within the cycle. Then, a time period between the first and second change points is obtained as a change point interval, and a foot landing period while exercising is calculated based on the first maximum value and the change point interval.
4 Citations
13 Claims
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1. A foot exercise motion analysis device comprising:
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an acceleration sensor which obtains acceleration signals in plural axis directions corresponding to a motion of a body of a user performing an exercise with cyclically moving feet; and a processor which is configured to execute operations including; a vertical acceleration maximum value obtaining processing operation which obtains a first maximum value of an acceleration signal in a vertical direction within a period of one cycle of a foot movement of the user, the acceleration signal in the vertical direction being one of the acceleration signals in the plural axis directions obtained by the acceleration sensor, a searching processing operation which searches for a first change point related to foot landing and takeoff motions of the user in a composite acceleration signal, in a forward direction from a time point of a second maximum value of the composite acceleration signal, and searches for a second change point related to foot landing and takeoff motions of the user in the composite acceleration signal in a backward direction from the time point of the second maximum value, within the period of one cycle, the composite acceleration signal being obtained by combining acceleration signals of at least two of the plural axis directions, and a landing period calculation processing operation which obtains a period of time between the first change point and the second change point as a change point interval, when the first change point and the second change point are detected by the processor in the searching processing operation, and calculates a foot landing period of the user while exercising based on the first maximum value of the acceleration signal in the vertical direction and the change point interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A control method for controlling a foot exercise motion analysis device, the method comprising:
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an acceleration signal obtaining step of obtaining, by an acceleration sensor, acceleration signals in plural axis directions corresponding to a motion of a body of a user performing an exercise with cyclically moving feet; a vertical acceleration maximum value obtaining step of obtaining, by a processor, a first maximum value of an acceleration signal in a vertical direction within a period of one cycle of a foot movement of the user, the acceleration signal in the vertical direction being one of the acceleration signals in the plural axis directions obtained by the acceleration sensor; a searching step of searching, by the processor, for a first change point related to foot landing and takeoff motions of the user in a composite acceleration signal, in a forward direction from a time point of a second maximum value of the composite acceleration signal, and searching for a second change point related to foot landing and takeoff motions of the user in the composite acceleration signal in a backward direction from the time point of the second maximum value, within the period of one cycle, the composite acceleration signal being obtained by combining acceleration signals of at least two of the plural axis directions; and a landing period calculation step of obtaining, by the processor, a period of time between the first change point and the second change point as a change point interval, when the first change point and the second change point are detected by the processor in the searching step, and calculating a foot landing period of the user while exercising based on the first maximum value of the acceleration signal in the vertical direction and the change point interval.
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13. A non-transitory computer-readable medium having stored thereon a control program for controlling a foot exercise motion analysis device that is executable by a computer, the control program being executable by the computer to perform functions comprising:
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an acceleration signal obtaining processing for obtaining, by an acceleration sensor, acceleration signals in plural axis directions corresponding to a motion of a body of a user performing an exercise with cyclically moving feet; a vertical acceleration maximum value obtaining processing operation for obtaining, by a processor, a first maximum value of an acceleration signal in a vertical direction within a period of one cycle of a foot movement of the user, the acceleration signal in the vertical direction being one of among the acceleration signals in the plural axis directions obtained by the acceleration sensor; a searching processing operation for searching, by the processor, for a first change point related to foot landing and takeoff motions of the user in a composite acceleration signal in a forward direction from a time point of a second maximum value of the composite acceleration signal, and searching for a second change point related to foot landing and takeoff motions of the user in the composite acceleration signal in a backward direction from the time point of the second maximum value, within the period of one cycle, the composite acceleration signal being obtained by combining acceleration signals of at least two of the plural axis directions; and a landing period calculation processing operation for obtaining, by the processor, a period of time between the first change point and the second change point as a change point interval, when the first change point and the second change point are detected by the processor in the searching processing operation, and calculating a foot landing period of the user while exercising based on the first maximum value of the acceleration signal in the vertical direction and the change point interval.
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Specification