Body motion balance detection device, body motion balance detection program, body motion balance detection method, and body motion balance diagnosis method

• US 8,414,507 B2
• Filed: 04/21/2011
• Issued: 04/09/2013
• Est. Priority Date: 11/18/2008
• Status: Active Grant

• Current Assignee: Omron Healthcare Company Limited (Omron Corporation)
• Original Assignee: Omron Healthcare Company Limited (Omron Corporation)
• Inventors: Asada, Yuji
• Primary Examiner(s): TOWA, RENE T
• Application Number:
  US13/091,940
• Publication Number:
  US 20110196264A1
• Time in Patent Office: 719 Days
• Field of Search: 600/300, 600587-595, 73 6501- 6509, 73489-490, 734/92, 735/97, 702/144, 702/160, 702/176, 702/182, 324/160
• US Class Current: 600/595
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 5/4023 Evaluating sense of balance

Abstract

A body motion measurement device capable of detecting a body motion balance without installing a pressure sensor is provided. The body motion measurement device includes an acceleration detection unit for detecting a change in acceleration by walking, a calculation unit for detecting a walking balance from the acceleration signal detected by the acceleration detection unit, and a display unit for performing an output based on the detected walking balance. The calculation unit for detecting the walking balance executes step and step of recognizing one step unit of walking from the acceleration signal and acquiring PPodd, PPeven, Todd, and Teven, which are the foot information, and steps of detecting the walking balance based on the foot information.

Claims

1. A body motion balance detection device comprising:

a body motion related signal acquiring unit that acquires a body motion related signal in which a change in a body motion of a living body is detected, the body motion related signal acquiring unit acquiring the body motion related signal when the body motion related signal acquiring unit is attached to the living body;

a body motion balance detection unit that detects a body motion balance from the body motion related signal acquired by the body motion related signal acquiring unit; and

an output unit that performs an output based on the detected body motion balance, wherein

the body motion balance detection unit is configured to execute;

a foot information acquiring process for recognizing one step unit from the body motion related signal, and acquiring foot information on each respective foot of the living body, and

a body motion balance detection process for detecting the body motion balance based on the foot information, and

a detecting unit that determines whether the body motion related signal is indicative of walking, wherein

the detection of the body motion balance by the body motion balance detection unit is executed when walking is determined,

the foot information acquiring process acquires information of an odd number step and information of an even number step by separating the foot information of the odd number step and the even number step, and

the body motion balance detection process detects an abnormal balance of the body motion balance by comparing the information of the odd number step and the information of the even number step.

2. The body motion balance detection device according to claim 1, wherein

the body motion balance detection process compares an average value of information of the odd number step and an average number of information of the even number step.

3. The body motion balance detection device according to claim 2, wherein

the body motion balance detection unit is further configured to execute:

a continuity determination process for determining whether it is possible to continuously acquire information about the body motion for every step, and if continuously acquired, information from the body motion related signal becomes the foot information, and

the body motion balance detection unit executes the foot information acquiring process and the body motion balance detection process if the information is continuously acquired for a predetermined number of steps, and does not execute the detection of the body motion balance if the information is not continuously acquired for the predetermined number of steps.

4. The body motion balance detection device according to claim 1, wherein

the body motion balance detection process compares an average value of the information of the odd number step and an average value of the information of the even number step.

5. The body motion balance detection device according to claim 4, wherein

the body motion balance detection unit is further configured to execute:

a continuity determination process for determining if the body motion related signal acquiring unit can continuously acquire information about the body motion for every step, and if continuously acquired, the information from the body motion related signal becomes the foot information, and

the body motion balance detection unit executes the foot information acquiring process and the body motion balance detection process if the information is continuously acquired for a predetermined number of steps, and does not execute the detection of the body motion balance if the information is not continuously acquired for the predetermined number of steps.

6. A body motion measurement device comprising:

a portable body motion detection sensor that detects a change in body motion of a living body when the portable body motion detection sensor is attached to the living body;

a step counting unit that counts a number of steps from a body motion related signal detected by the portable body motion detection sensor;

a body motion balance detection unit that detects body motion balance from the body motion related signal detected by the portable body motion detection sensor;

a display unit that displays a number of steps of the counted number of steps counted by the step counting unit and the body motion balance detected by the body motion balance detection unit;

a storage unit that stores the counted number of steps; and

a power supply unit that supplies power, wherein

the body motion balance detection unit is configured to execute;

a foot information acquiring process for recognizing one step unit from the body motion related signal, and acquiring foot information on each respective foot of the living body, and

a body motion balance detection process for detecting the body motion balance based on the foot information, and

a detecting unit that determines whether the body motion related signal is indicative of walking, wherein

the detection of the body motion balance by the body motion balance detection unit is executed when walking is determined,

the foot information acquiring process acquires information of an odd number step and information of an even number step by separating the foot information of the odd number step and the even number step, and

the body motion balance detection process detects an abnormal balance of the body motion balance by comparing the information of the odd number step and the information of the even number step.

7. A body motion balance detection method comprising:

detecting a body motion balance from a body motion related signal by a body motion related signal acquiring unit in which a change in a body motion of a living body is detected, the body motion related signal acquiring unit acquiring the body motion related signal while attached to the living body; and

performing an output based on the detected body motion balance, wherein

the body motion balance detection step includes;

recognizing, by a foot information acquiring process, one step unit from the body motion related signal, and acquiring foot information on each respective foot of the living body, and

detecting, by a body motion balance detection process, the body motion balance based on the foot information,

determining, by a detecting unit, whether the body motion related signal is indicative of walking, the detection of the body motion balance by the body motion balance detection step is executed when walking is determined,

acquiring, by the foot information acquiring process, information of an odd number step information of an even number step by separating the foot information of the odd number step and the even number step, and

detecting, by the body motion balance detection process an abnormal balance of the body motion balance by comparing the information of the odd number step and the information of the even number step.

8. A non-transitory computer-readable storage medium that stores an executable program thereon, wherein the program instructs a microprocessor to perform the method of claim 7.

9. A body motion balance diagnosis method comprising:

attaching a body motion balance detection device on a median line of a living body, the body motion balance detection device including (1) a body motion related signal acquiring unit that acquires a body motion related signal in which a change in a body motion of the living body is detected;

(2) a body motion balance detection unit that detects a body motion balance from the body motion related signal acquired by the body motion related signal acquiring unit; and

(3) an output unit that performs an output based on the detected body motion balance, wherein

the body motion balance detection unit executes the steps of;

recognizing, by a foot information acquiring process, one step unit from the body motion related signal, and acquiring foot information on each respective foot of the living body, and

detecting, by a body motion balance detection process, the body motion balance based on the foot information,

determining, by a detecting unit, whether the body motion related signal is indicative of walking, wherein

the detection of the body motion balance by the body motion balance detection unit is executed when walking is determined;

making a diagnosis of the body motion balance according to the output based on the body motion balance from the output unit,

acquiring, by the foot information ac airing process, information of an odd number step and information of an even number step by separating the foot information of the odd number step and the even number step, and

detecting, by the body motion balance detection process, an abnormal balance of the body motion balance by comparing the information of the odd number step and the information of the even number step.