Pedestrian navigation two-dimensional human body speedometer and mileage calculation method

A pedestrian navigation and odometer technology, applied in the field of pedestrian navigation, can solve the problems of poor positioning accuracy and achieve the effect of improving positioning accuracy

Active Publication Date: 2018-06-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0003] In view of this, the present invention provides a two-dimensional human body odometer and a mileage calculation method for pedestrian navigation, which solves the problem

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  • Pedestrian navigation two-dimensional human body speedometer and mileage calculation method

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Embodiment Construction

[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0037] The present invention provides a human body odometer and a mileage calculation method for pedestrian navigation. Combining with the gait characteristics of the human body, the gait is accurately divided, and an adaptive single-step step length model is established for each gait as a scale for human body travel. Marking, to solve the problem of poor positioning accuracy of pedestrians in non-constrained, non-equally spaced or non-stationary unconventional gaits, and combine the step frequency information to obtain accurate travel distances and improve positioning accuracy.

[0038] A human body odometer for pedestrian navigation according to the present invention includes an inertial measurement module, a navigation solution module and a data processing module;

[0039] The center of gravity of the human body at the starting point of the marching mot...

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Abstract

The invention provides a pedestrian navigation two-dimensional human body speedometer and a mileage calculation method and aims to solve the problem of poor positioning precision of a pedestrian at non-common gaits, acquire a precise advancing distance of the pedestrian, and achieve high-precision positioning. According to the two-dimensional human body speedometer and the method provided by the invention, gaits are precisely classified on the basis of inertial navigation calculations and human body gait characteristics, a reference step length is established for each step of gaits, a modification factor is added on the basis of the reference step length to obtain a scale factor, the scale factor is adopted as an advancing scale marker of a human body, precise single step length estimationis achieved by using the scale factor, the problem of poor positioning precision of the pedestrian at non-common gaits such as non-constrained gaits, non-equal interval gaits or non-stable gaits is solved, precise advancing distances are obtained according to step frequency information, and the positioning precision is improved.

Description

technical field [0001] The invention belongs to the technical field of pedestrian navigation, and in particular relates to a pedestrian navigation two-dimensional human body odometer and a mileage calculation method. Background technique [0002] With the rapid increase of people's demand for indoor location services, dead reckoning of pedestrians using micro-inertial navigation systems has become one of the mainstream technologies for indoor positioning. In the personal dead reckoning system, there are two main methods for step size estimation: one is to perform quadratic integration of the acceleration based on the principle of inertial navigation, but the performance indicators such as temperature drift and linearity of consumer-grade MEMS inertial devices are not high. The integral error within will reach one radius of the earth; the second is to use the travel characteristics of the person to model the travel distance under his specific action. The existing model-based ...

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Application Information

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IPC IPC(8): G01C22/00G01C21/16
CPCG01C21/16G01C22/006
Inventor 邓志红王鹏宇尚克军曹运严丹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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