Flexible filtering method of triaxial acceleration data for motion detection

A technology for axis acceleration and motion detection, applied in the direction of acceleration measurement and multi-dimensional acceleration measurement using inertial force, can solve the problem of system resource consumption that cannot effectively filter out motion signal noise

Inactive Publication Date: 2017-10-20
温胜洁
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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a flexible filtering method 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 idl

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  • Flexible filtering method of triaxial acceleration data for motion detection
  • Flexible filtering method of triaxial acceleration data for motion detection

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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0047] Since the acceleration signals of human limb movement are mainly low-frequency signals, the acceleration sensor is required to have a high sensitivity. However, the acceleration signal will be polluted by environmental high-frequency noise to varying degrees during the excitation, detection and transmission process. At the same time, the shaking of the limbs will also introduce high-frequ...

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Abstract

The invention discloses a flexible filtering method of triaxial acceleration data for motion detection. Different filtering modes are determined according to the current load value of the processor of an intelligent terminal. The length of each axial neighborhood data elongation annular buffer is determined according to the current sampling frequency of an acceleration sensing data acquisition unit. A corresponding axial filtering function is switched on or switched off according to an idle axial direction of a training template. Furthermore each axial neighborhood data annular buffer and each axial data buffer are set. Furthermore averaging filtering is performed on each axial data by means of each buffer and each filter. Furthermore when an external event is interrupted, the acceleration sensing data acquisition unit stops data acquisition or a triaxial acceleration sensor is cancelled for stopping data filtering. The flexible filtering method realizes effective filtering of a high-frequency noise in a low-frequency motion signal on the condition of relatively low system resource consumption in a motion detection process, and furthermore settles problems of incapability of effectively filtering noises in the motion signal and relatively high system resource consumption.

Description

technical field [0001] The invention belongs to the technical field of motion detection, and more particularly relates to a flexible filtering method 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 ...

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Application Information

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IPC IPC(8): G01P15/18
CPCG01P15/18
Inventor 吴海红桂三生段凌
Owner 温胜洁
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