Gait asymmetry detection method based on gravitational acceleration

A technology for gravity acceleration and symmetry detection, which is applied in diagnostic recording/measurement, medical science, sensors, etc., can solve problems such as limiting the promotion of health detection technology, and achieve the effect of reducing the need for professional knowledge and high reference value

Active Publication Date: 2018-01-23
BEIJING UNIV OF TECH
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Problems solved by technology

The testee needs to move in a designated area or equipment, use a high-speed camera to capture the screen, and then use image technology for identification and analysis, which greatly limits the promotion of health detection technology based on gait analysis

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  • Gait asymmetry detection method based on gravitational acceleration
  • Gait asymmetry detection method based on gravitational acceleration
  • Gait asymmetry detection method based on gravitational acceleration

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the invention clearer, the present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to explain the present invention, and are not intended to limit the present invention. The acceleration of gravity can directly reflect the state of the human body during exercise. The method of gait analysis by extracting the acceleration characteristic value is applied to wearable devices, which not only reduces the limitations of traditional gait analysis equipment, but also reduces the test conditions. The analysis results have a high reference value for health monitoring.

[0029] The flow chart of the present invention carrying out gait asymmetry analysis is as figure 1 shown, including the following steps:

[0030] Step 1: Acceleration data collection and signal preprocessing during...

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Abstract

The invention provides a gait asymmetry detection method based on gravitational acceleration. The method comprises the steps that the acceleration signals of the front chest part of the human body inthe constant-speed walking process are collected through a three-axis acceleration sensor; the temporal sequence of the signals is subjected to frequency-domain quadratic integration, and the displacement temporal sequence in the walking process is obtained; based on the gravity displacement change in the movement process, the gait characteristic value is extracted; based on the gait characteristic value, the gait asymmetry coefficient in the moving process of the left and right legs is calculated; according to the asymmetry coefficient, the gait asymmetry in the movement process of the humanbody is detected. By means of the method, the movement characteristic value can be directly extracted in the movement data and calculated, no special devices are needed, meanwhile, the requirements ofoperation staff for specialized knowledge are reduced, the obtained measurement result is high in reference value, and the method is suitable for the daily health care of the elderly in families, nursing homes and other sites.

Description

technical field [0001] The invention belongs to the field of health detection and relates to a method for detecting gait asymmetry based on acceleration of gravity. Background technique [0002] my country's elderly population has a large base, rapid growth, and an obvious aging trend. Studies have shown that the range of activities and time of activities of the aging population is mainly based on the family, so the daily health monitoring of the family occupies an increasingly important position. The hospital's diagnosis of the disease is mainly based on the characteristics of the case, but many diseases related to the limbs have abnormal movements of the limbs before the onset of the disease. Such as joint disease, Parkinson's disease, stroke, etc., the initial performance is decreased exercise ability, abnormal gait and other symptoms. If the pre-disease characteristics can be detected in advance through daily exercise detection, it can be detected early, prevented and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/11
Inventor 吴水才张斌
Owner BEIJING UNIV OF TECH
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