Flexible filtering device for three-axis acceleration speed data during motion detection

Abstract

The invention discloses a flexible filtering device for three-axis acceleration speed data during motion detection. During motion detection, a three-axis acceleration sensor is applied for data collection; a filtering way for different demands of system computation resources is determined according to a current load value of a processor of an intelligent terminal device; a length of each axis to an adjacent field data lengthening annular buffer is determined according to sampling frequency of an acceleration sensor data collector; relative axial filtering functions can be relatively opened and closed according to idlness of a training template; average filtering is conducted to each axial data by the use of each buffer and each filtering device; high-frequency noise of a low-frequency motion signal can be effectively filtered with low system resource consumption during the motion detection; and therefore, technical problems that motion signal noise cannot be effectively filtered and high system resource consumption is caused in the prior art can be solved.

Description

technical field [0001] The invention belongs to the technical field of motion detection, and more particularly relates to a flexible filtering device for three-axis acceleration data used for motion detection. Background technique [0002] Gymnastics is a kind of micro-sports that is not limited by the venue. Because of its advantages of relieving fatigue, regulating emotions and exercising the body, people pay more and more attention to it. Work-time exercises can immediately unload the body's load, maintain a healthy body, and work efficiently. The traditional method is that office workers imitate the work-time exercise activities in pictures or videos, but they cannot know whether the posture is standard. If the posture is not standard, good exercise effects cannot be achieved. Based on the three-axis acceleration sensor in the smart device or smart phone worn on the human limbs, the three-axis acceleration sensor data can be used to monitor the corresponding human limb ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a flexible filtering device for three-axis acceleration data used in motion detection. The current load value of the processor of the terminal device determines the different filtering methods that require different computing resources for the system. The length of the variable-length ring buffer for each axial neighborhood data is determined according to the current sampling frequency of the acceleration sensor data collector. According to the idle time of the training template Axial to switch the filter function of the corresponding axis, and use each buffer and filter to perform mean value filtering on the data of each axis, so as to realize the high-frequency motion signal in the low-frequency motion signal in the motion detection process under the condition of low system resource consumption Effective filtering of high-frequency noise, thus solving the technical problems in the prior art that the motion signal noise cannot be effectively filtered and the system resource consumption is high

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