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Method of improving gait detection based on mobile terminal in different carrying positions

A technology of carrying position and mobile terminal, applied in the directions of diagnostic recording/measurement, medical science, diagnosis, etc., it can solve the problems of high pacing accuracy, inability to adjust pacing parameters in real time, and inability to maintain algorithms, so as to improve the accuracy. Effect

Inactive Publication Date: 2021-09-03
SHANDONG UNIV OF SCI & TECH
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  • Description
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Problems solved by technology

However, in daily activities, the relative position of the pedestrian itself and the mobile terminal is changing all the time, but the step detection parameters cannot be adjusted in real time, making the algorithm unable to maintain a high step detection accuracy under complex movements

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  • Method of improving gait detection based on mobile terminal in different carrying positions
  • Method of improving gait detection based on mobile terminal in different carrying positions
  • Method of improving gait detection based on mobile terminal in different carrying positions

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Embodiment Construction

[0052] Glossary:

[0053]The gait information refers to the statistics of the pedestrian's steps and the estimation information of the step length.

[0054] Step detection is a common term for gait detection.

[0055] The check point is the time node when each step starts and ends.

[0056] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0057] combine figure 1 and figure 2 Shown:

[0058] The method for improving gait detection based on a mobile terminal under different carrying positions comprises the following steps:

[0059] s1. Obtain the inertial signals of the mobile terminal when pedestrians move in different carrying positions.

[0060] When this embodiment acquires the above-mentioned inertial signal, the data acquisition software used is the existing navigation item data acquisition software, and the sampling frequency is set as f. Then the sampling time node corresponding to each...

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Abstract

The invention discloses a method for improving gait detection based on a mobile terminal at different carrying positions, which includes the following steps: s1. Obtaining the inertial signal of the mobile terminal when pedestrians move at different carrying positions; s2. According to the inertial signal of step s1 signal to obtain the m-dimensional inertial signal feature matrix containing the mobile terminal's carrying position information; s3. to reduce the dimensionality of the m-dimensional inertial signal feature matrix to obtain an n-dimensional feature matrix; s4. to the n-dimensional feature matrix and the carrying position attribute of the mobile terminal Matrix modeling to obtain the mobile terminal carrying position model; s5. Utilize the mobile terminal carrying position model in step s4 to identify the current carrying position of the mobile terminal; s6. According to the current carrying position of the mobile terminal, select different gait detection methods to obtain Gait information of pedestrians. The invention can adapt to the change of the mobile terminal in different carrying positions, and improves the accuracy of gait detection.

Description

technical field [0001] The invention relates to a method for improving gait detection based on a mobile terminal in different carrying positions. Background technique [0002] The traditional pedestrian navigation and positioning method based on inertial devices is mainly a wearable device, which requires rigid binding with the pedestrian's body, which has great limitations for its application. In recent years, Pedestrian Dead Reckoning (PDR), which is based on the development of smart devices, has become a research hotspot due to its strong independence and low cost of equipment. There are three main implementation processes of pedestrian dead reckoning technology: gait detection, heading estimation and position reckoning. Among them, gait detection includes step number detection and step length estimation, and its detection accuracy directly affects the final positioning result of the system. [0003] At present, there are two main categories of pedestrian gait estimation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/11G06K9/00G06K9/62
Inventor 郭英刘清华姬现磊冯茗杨郎爱坤叶瑾盛方园张涛
Owner SHANDONG UNIV OF SCI & TECH
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