Step-counting method based on triaxial accelerometer and capable of dynamically switching calculation axis
A technology of axis acceleration and sensors, which is applied in the step counting field of dynamically switching calculation axes, can solve the problem of inaccurate step counting and achieve the effect of ensuring the accuracy of step counting
Active Publication Date: 2017-11-03
浙江利尔达物芯科技有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the technical problem of inaccurate step counting when people run fast in the existing step counting method, and provide a step counting method based on a three-axis acceleration sensor that dynamically switches calculation axes, which can be used when people's motion state changes. , dynamically switch the calculation axis to ensure the accuracy of step counting in various motion states
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[0024] Embodiment: A step counting method based on a three-axis acceleration sensor that dynamically switches calculation axes in this embodiment. The three-axis acceleration sensor is installed in the shoe and the positive direction of the X-axis faces the front of the shoe body, such as figure 1 shown, including the following steps:
[0025] S1: The microprocessor reads the detection data output by the three-axis acceleration sensor, and selects the corresponding data for processing according to the state of human motion. The initial setting of the state of human motion is walking. When the state of human motion is walking or jogging, only The X-axis acceleration data is processed. When the human body is in a fast running state, only the XYZ three-axis acceleration data is selected for processing;
[0026] S2: The microprocessor draws the acceleration change curve according to the selected data, and detects the peaks in the acceleration change curve. When the acceleration va...
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The invention discloses a step-counting method based on a triaxial accelerometer and capable of dynamically switching a calculation axis. The method comprises the following steps that S1, a microprocessor reads detection data output by the triaxial accelerometer and selects corresponding data for processing according to the movement state of a human body; S2: the microprocessor draws an acceleration change curve according to the selected data, detects wave peaks in the acceleration change curve and determines times when feet contact with ground according to the wave peaks; S3, the microprocessor calculates a current counted step number B according to the number A of the weak peaks in the acceleration change curve; and S4: the microprocessor determines the current state of the human body and carries out setting. The method provided by the invention can dynamically switch the calculation axis when the movement state of people changes, so counting accuracy of people in each movement state is guaranteed.
Description
technical field [0001] The invention relates to the technical field of step counting, in particular to a step counting method for dynamically switching calculation axes based on a three-axis acceleration sensor. Background technique [0002] Many modern people pay great attention to their daily exercise. As a monitoring method to effectively record and monitor exercise, step counting is widely used in smart running shoes. Existing smart running shoes are equipped with a three-axis acceleration sensor inside. The positive direction of the X-axis of the three-axis sensor is towards the front, the positive direction of the Y-axis is towards the left, and the positive direction of the Z-axis is vertically upward. The existing step counting method is suitable for walking and jogging scenarios, but it is not very accurate in the case of fast running. Contents of the invention [0003] The purpose of the present invention is to overcome the technical problem of inaccurate step c...
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IPC IPC(8): G01C22/00
Inventor 华高坚李磊磊陈顺平蔡盛贵何佳徐毅沈帅帅
Owner 浙江利尔达物芯科技有限公司