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Gravity influence eliminating method and realization device for wearable joint angular acceleration measurement

A technology of acceleration and joint angle, which is applied in the field of the method for eliminating the influence of gravity on wearable joint angular acceleration measurement and its implementation device, and can solve the problems of signal noise amplification and difficulty in obtaining angular acceleration values, etc.

Active Publication Date: 2016-08-24
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the method of directly detecting the joint angle and then deriving the angular acceleration twice is simple, it is difficult to obtain the ideal angular acceleration value due to the signal noise amplification of the output of the angle sensor.

Method used

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  • Gravity influence eliminating method and realization device for wearable joint angular acceleration measurement
  • Gravity influence eliminating method and realization device for wearable joint angular acceleration measurement
  • Gravity influence eliminating method and realization device for wearable joint angular acceleration measurement

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Embodiment

[0023] The overall structure of this embodiment is as figure 1 Shown: The angular acceleration detection device that can eliminate the influence of gravity is mainly composed of two parts: the support part and the signal acquisition and processing part. A front movable bracket 2 and a rear support bracket 3 in a flat rod-shaped structure, the opposite ends of the front movable bracket 2 and the rear support bracket 3 are staggered and stacked and hinged by a connecting shaft 10, and one end of the connecting shaft 10 is connected to the front The movable bracket 2 is fixedly connected, and the middle part passes through the through hole of the rear supporting bracket 3, and the front end of the front movable bracket 2 is fixedly provided with acceleration acquisition modules 1 and 6; wherein, the acceleration output direction of the acceleration acquisition modules 1 and 6 Move along the tangential direction of the elbow joint and communicate wirelessly with the host processin...

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Abstract

The invention discloses a gravity influence eliminating method and realization device for wearable joint angular acceleration measurement. Through a combined method of a plurality of inertial sensors, on the basis of linear acceleration data measured by the inertial sensors, the gravity influence on the inertial sensors during measurement can be eliminated through processing and the actual angular acceleration of a joint is obtained.

Description

Technical field: [0001] The invention relates to a detection method, in particular to a method for eliminating the influence of gravity on wearable joint angular acceleration measurement and a device for realizing the same. Background technique: [0002] Joint angular acceleration plays an increasingly important role in rehabilitation assessment and rehabilitation control strategy formulation. Although the method of directly detecting the joint angle and then deriving the angular acceleration twice is simple, it is difficult to obtain the ideal angular acceleration value due to the signal noise amplification of the output signal of the angle sensor. Therefore, the inertial sensor is usually used to obtain the required angular acceleration by using the relationship between the angular acceleration and the linear acceleration. Since the inertial sensor will be affected by gravity during the detection process, in order to eliminate the influence of gravity factor in the acquis...

Claims

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Application Information

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IPC IPC(8): A61B5/11
CPCA61B5/11A61B5/1126
Inventor 王勇胡保华查海星赵鹏鹏
Owner HEFEI UNIV OF TECH
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