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Step-counting method based on acceleration sensor

An acceleration sensor and acceleration technology, which is applied in the direction of instruments, measuring devices, surveying and navigation, etc., can solve problems such as hand shaking that cannot be ruled out

Active Publication Date: 2014-07-30
INST OF COMPUTING TECH CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing pedometer software also cannot rule out miscalculations caused by hand shaking, flipping, etc., and it is often only when the mobile phone is in a specific position on the body that people can accurately count the steps.

Method used

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  • Step-counting method based on acceleration sensor

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the design and implementation of the adaptive pedometer based on the acceleration sensor of the mobile phone will be 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.

[0047] figure 1A flow chart of a step counting method based on a portable acceleration sensor provided by an embodiment of the present invention is shown, which includes the following steps 1 to 3.

[0048] Step 1: Use the portable acceleration sensor to collect the three-axis linear acceleration data in real time, and then calculate the magnitude value of the linear acceleration vector. Existing mobile smart devices (such as smartphones) usually have a built-in three-axis linear acceleration sensor, which can measure t...

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Abstract

The invention provides a step-counting method based on an acceleration sensor. The step-counting method comprises the following steps: (1) obtaining amplitude values of linear acceleration vectors which are collected in a walking process in real time based on the acceleration sensor; (2) initializing a state machine, dividing a process of walking for a step of people into a plurality of stages, wherein each stage uniquely corresponds to one state in the state machine and thus the walking process of people corresponds to state transition in the state machine; and (3) inputting the amplitude values of the linear acceleration vectors which are obtained in the step (1) into the state machine according to a timing sequence, triggering the state transition of the state machine and obtaining a step-counting number according to cycles of the state transition. The step-counting method is capable of accurately counting steps by overcoming influences of vibration and shake of the sensor.

Description

technical field [0001] The invention relates to measurement technology and sensor data processing technology, in particular, the invention relates to a step counting method based on an acceleration sensor. Background technique [0002] With the improvement of people's living standards, people pay more and more attention to their health. The pedometer can detect people's walking steps, help people grasp the exercise situation in real time, so as to formulate a reasonable health plan. The scope of application of pedometers is far more than that. With the gradual development of indoor positioning technology, pedometers are also applied to the field of indoor positioning. It mainly tests the number of steps people walk, combined with the step length estimation method, In turn, the distance traveled by people can be accurately judged. The pedometer function for indoor positioning also requires higher accuracy, but the existing pedometers cannot meet the needs of indoor position...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C22/00
CPCG01C22/006
Inventor 赵方罗海勇李信然尹家宝
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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