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Method for step counting and mileage reckoning based on single-axis gyroscope

A single-axis gyroscope and mileage technology, applied in the field of navigation and positioning, can solve the problems of low precision and high cost, and achieve the effect of small number, low cost and high promotion

Inactive Publication Date: 2012-02-15
ZHEJIANG UNIV
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Problems solved by technology

[0004] In order to overcome the disadvantages of low precision and high cost of the background technology, the purpose of the present invention is to provide a step counting and mileage calculation method based on a single-axis gyroscope. frequency, and then calculate the average motion step length according to the motion model, and the motion mileage can be calculated after obtaining the number of motion steps and the average motion step length

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  • Method for step counting and mileage reckoning based on single-axis gyroscope
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  • Method for step counting and mileage reckoning based on single-axis gyroscope

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as figure 1 Shown, the specific implementation steps of the present invention are as follows:

[0030] 1. Calibration of motion parameter model:

[0031] For the user, the parameter model is calibrated first. The specific calibration method is as follows: take a distance of L, and the user walks slowly and fast to complete the distance of L. The number of steps taken by the two methods and time are (N 1 ,T 1 ) and (N 2 ,T 2 ). The motion state classification threshold can be obtained from the following formula:

[0032] f t = C w - 1 b w ...

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Abstract

The invention discloses a method for step counting and mileage reckoning based on a single-axis gyroscope. The method comprises the following steps: calibrating parameters of a movement model; acquiring data of the single-axis gyroscope; counting the number of steps according to the angular velocity periodicity of the data of the single-axis gyroscope; compensating and correcting the number of the steps through a compensation algorithm; acquiring an average step length and a movement distance in a period according to a step frequency f through the movement model; and calculating to obtain themovement mileage through distance accumulation. According to the invention, a human performs a periodic swing winding a vertical ground axis in a certain degree when the human moves, so the period detection is realized through the vertically arranged single-axis gyroscope, thereby the number of the steps and the step frequency of the movement of the human are obtained; and the human movement model is used to estimate the average step length from the step frequency, so the movement step counting and the mileage calculating are realized. The method of the present invention has the characteristics of small sensor number, low cost, high reliability, lightness and convenience, high practicality and popularization, and the like.

Description

technical field [0001] The invention relates to the field of navigation and positioning, in particular to a single-axis gyroscope-based step counting and mileage calculation method for pedestrian positioning. Background technique [0002] Step counting and motion mileage calculation technology has important applications in life and production. First of all, it can be used as a daily exercise progress monitor in people's daily physical exercise. People can use the number of exercise steps and exercise mileage data on the monitor. Reasonable control of exercise intensity. On the other hand, motion mileage reckoning is one of the key technologies in the positioning and dead reckoning of operators in GPS signal occlusion areas. Dead reckoning is an important positioning method in the field of navigation and positioning. It mainly calculates the distance and orientation from a known position to the current point by measuring its own state changes, so as to calculate the current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C22/00G01C22/02
Inventor 项志宇齐保振
Owner ZHEJIANG UNIV
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