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Pedestrian step length estimation method based on intelligent mobile terminal equipment

A step size estimation, mobile terminal technology, applied in the field of pedestrian dead reckoning, can solve the problems of difficulty in popularization and application, high price of sensor units, and achieve outstanding anti-interference and adaptive capabilities, reduce acquisition and processing, and reduce system power consumption. Effect

Inactive Publication Date: 2015-04-22
SHANGHAI JIAO TONG UNIV
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  • Abstract
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Problems solved by technology

However, the price of this type of sensor unit is relatively high, and it is difficult to popularize and apply it to the masses.

Method used

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  • Pedestrian step length estimation method based on intelligent mobile terminal equipment
  • Pedestrian step length estimation method based on intelligent mobile terminal equipment
  • Pedestrian step length estimation method based on intelligent mobile terminal equipment

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Embodiment Construction

[0050] combined below Attached picture The present invention will be described in detail by way of specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that other embodiments may be utilized, or structural and functional modifications may be made to the embodiments recited herein, without departing from the scope and spirit of the present invention.

[0051] like figure 1 System frame shown picture , in an embodiment of a pedestrian step size estimation method based on an intelligent mobile terminal device provided by the present invention, the mobile terminal may be a tablet computer, a smart phone, and includes a sensor signal collector (111), an information capturer (112) ), a step size estimation core processing unit (113) and an intelligent mobile terminal device of an output controller (114).

[0052] The pedestrian step s...

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Abstract

The invention provides a pedestrian step length estimation method based on intelligent mobile terminal equipment. According to the method, a sensor signal acquisition device (111), an information acquirer (112), a step length estimation core processing unit (113) and an output controller (114) which are sequentially connected are included. After a step length estimation model and an estimated step length are initialized, the pedestrian step length estimation method includes the steps that S1, the step length estimation core processing unit (113) obtains and updates the estimated step length and the step length estimation model according to sensing information acquired by an acceleration sensor, a gyroscope, a magnetometer and a camera used for obtaining images; S2, the output controller judges whether the step estimation model is convergent or not, if yes, only the sensing information of the acceleration sensor needs to be acquired, the estimated step length is obtained according to the sensing information of the acceleration sensor and the step length estimation model, the estimated step length is output, and the S2 is executed again; if not, abnormal step length filtering processing is conducted on the estimated step length, and the S1 is returned.

Description

technical field [0001] The present invention relates to the field of pedestrian dead reckoning, in particular to a method for estimating pedestrian step length based on an intelligent mobile terminal device. Background technique [0002] In the pedestrian dead reckoning system, the step size estimation module is one of the main error sources of the system. In traditional pedestrian dead reckoning systems, the step size is usually considered constant, which obviously introduces a large amount of error. According to physiological principles, the step length of different pedestrians is related to their height (or leg length) and weight. Therefore, some studies propose an empirical model based on pedestrian height and weight information to estimate the pedestrian's step length. However, due to different pedestrians walking Habits vary widely, and it is difficult to accurately estimate the step length of different pedestrians through the step length estimation model; in addition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C22/00G01C21/12
CPCG01C22/00G01C21/12
Inventor 钱久超裴凌邹丹平刘佩林郁文贤钱铠
Owner SHANGHAI JIAO TONG UNIV
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