Pedestrian trajectory calculation method based on Mems inertial sensor

An inertial sensor, sensor technology, applied in instruments, navigation, navigation and other directions through speed/acceleration measurement, can solve problems such as strong robustness, high precision, positioning error, etc., to enrich motion information, avoid misalignment, and calculate Efficient effect

Inactive Publication Date: 2022-05-31
湖南顶强电子科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in consumer products, due to the limitations of device size, price, and usage, these sensors for positioning are often not as accurate and robust as industrial-grade sensors, and mobile devices cannot support large computing burdens. These factors will error in positioning

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  • Pedestrian trajectory calculation method based on Mems inertial sensor
  • Pedestrian trajectory calculation method based on Mems inertial sensor
  • Pedestrian trajectory calculation method based on Mems inertial sensor

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Embodiment Construction

[0073] In order to enable those skilled in the art to better understand the technical solution in the application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the drawings in the embodiment of the application. Obviously, the described implementation Examples are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0074] It should be noted that when an element is referred to as being "fixed" or "disposed on" another element, it may be directly disposed on another element or indirectly disposed on another element; when an element is referred to as being "connected" It may be directly connected to another element or indirectly connected to another element.

[0075] It i...

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Abstract

The invention discloses a pedestrian trajectory calculation method based on Mems inertial sensors. The pedestrian trajectory calculation method comprises the following steps: sensor arrangement: arranging the Mems inertial sensors at the feet and waist of a pedestrian for data acquisition; pedestrian gait detection: detecting the motion state of the pedestrian by using an MEMS inertial sensor at the foot, and carrying out state classification; estimating the step length of the pedestrian: performing modeling analysis on the walking process of the pedestrian to obtain the relationship between the net acceleration and the step length in the walking process, and estimating the step length in combination with the motion state of the pedestrian; acquiring a real course angle of the pedestrian; and pedestrian trajectory estimation: according to the step length, the real course angle and the pedestrian movement moment, obtaining the movement displacement and position of each step of the pedestrian, and obtaining a pedestrian movement trajectory. Compared with the prior art, when the GPS signal is interrupted, the pedestrian motion trail can be accurately calculated, and accurate positioning is achieved.

Description

technical field [0001] The present application relates to the technical field of pedestrian trajectory prediction, and more specifically, to a pedestrian trajectory estimation method based on Mems inertial sensors. Background technique [0002] With the development of Global Navigation Satellite System (GNSS), positioning technology is greatly changing human life, such as map navigation of smartphones, autonomous positioning of unmanned vehicles, etc. However, there are great challenges in pedestrian positioning in places such as indoors and underground places with poor GPS signals. Indoor pedestrian positioning is widely used in practice, such as the positioning of firefighters entering a building during fire rescue, and the positioning of pedestrians at night in security tasks. The positioning of security personnel patrolling the building, etc. Therefore, pedestrian positioning in an indoor environment without GPS signals has become a hot direction of current research. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16G01S19/49G01S19/39
CPCG01C21/165G01S19/49G01S19/393
Inventor 潘益清
Owner 湖南顶强电子科技有限公司
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