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Pedestrian track reckoning method and device, track reckoning apparatus and storage medium

A track and pedestrian technology, applied in the field of smart wear, can solve the problems of low precision and large wearable user error, and achieve the effect of reducing power consumption and shortening the opening time.

Active Publication Date: 2018-05-01
MOBVOI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technologies are applied to smart wearable devices that are worn on the hand. The inertial navigation sensor has relatively large errors in the wearable user's heading direction and estimated step size, which leads to the inertial navigation sensor assisting in obtaining the user's trajectory. The accuracy is lower

Method used

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  • Pedestrian track reckoning method and device, track reckoning apparatus and storage medium
  • Pedestrian track reckoning method and device, track reckoning apparatus and storage medium
  • Pedestrian track reckoning method and device, track reckoning apparatus and storage medium

Examples

Experimental program
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Embodiment 1

[0030] figure 1 It is a flow chart of a method for inferring pedestrian tracks provided by Embodiment 1 of the present invention. This embodiment can be applied to obtain the final trajectory based on the trajectory of GPS positioning and the trajectory generated by inertial navigation. This method can be inferred from pedestrian tracks device, which can be implemented by software and / or hardware, and generally can be integrated in a track inference device (for example, a wearable device such as a watch or a bracelet), the method includes the following operations:

[0031] S110. When it is determined that the GPS of the wearable device is switched from the on state to the off state, take the user track point determined before switching as the starting point of inertial navigation, and acquire at least one predicted movement track point of the wearable user according to the set collection frequency.

[0032] First of all, the technical solution of this embodiment is mainly appl...

Embodiment 2

[0052] Figure 2a It is a flow chart of a pedestrian trajectory estimation method provided in Embodiment 2 of the present invention, Figure 2b It is a schematic diagram of a data flow in which GPS and inertial navigation sensors are fused to infer pedestrian tracks provided by Embodiment 2 of the present invention. This embodiment is embodied on the basis of the above-mentioned embodiments. The method of this embodiment may include:

[0053] S210. When it is determined that the GPS of the wearable device is switched from the on state to the off state, take the user track point determined before switching as the inertial navigation starting point, and acquire at least one predicted movement track point of the wearable user according to the set collection frequency.

[0054] S220. When it is determined that the GPS is switched from the on state to the off state, acquire the absolute position in the user track point determined before switching as a reference absolute position, a...

Embodiment 3

[0075] image 3 It is a flow chart of a pedestrian flight path estimation method provided by Embodiment 3 of the present invention. This embodiment is embodied on the basis of the above-mentioned embodiments. The method of this embodiment may include:

[0076] S310. When it is determined that the GPS of the wearable device is switched from the on state to the off state, take the user track point determined before switching as the inertial navigation starting point, and acquire at least one predicted movement track point of the wearable user according to the set collection frequency.

[0077] S320. When it is determined that the GPS is switched from the on state to the off state, acquire the absolute position in the user track point determined before switching as a reference absolute position, and acquire the absolute direction in the user track point determined before switching as a reference absolute position direction.

[0078] S330. After setting the collection duration at...

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Abstract

An embodiment of the invention discloses pedestrian track reckoning method and device, a track reckoning apparatus and a storage medium. The method comprises the following steps of, when a GPS (GlobalPositioning System) is switched from an on state to an off state, using a user trajectory point determined before switching as an inertial navigation starting point, obtaining a predicted motion trajectory point of a user with a wearable apparatus, and when the GPS is determined to be switched to the on state, obtaining a first motion trajectory determined by the inertial navigation starting point and a predicted motion trajectory; according to a real-time position trajectory point provided by the GPS after reswitching and the user trajectory point determined before the switching, obtaining asecond motion trajectory of the user with the wearable apparatus; fusing the first motion trajectory with the second motion trajectory, so as to obtain a motion trajectory of the user with the wearable apparatus. Problems that a deviation of a trajectory point obtained through an inertial navigation technique in the prior art is larger, a trajectory jump occurs when a trajectory point obtained byinertial navigation is combined with a trajectory point obtained by the GPS, and the like, are solved, and not only can a turning-on time of the GPS be shortened, but also a motion trajectory with higher accuracy can be obtained.

Description

technical field [0001] Embodiments of the present invention relate to the field of smart wearable technologies, and in particular, to a pedestrian trajectory estimation method, device, trajectory estimation device, and storage medium. Background technique [0002] With the increasing development of smart wearable devices, the functions of smart wearable devices are also becoming more and more abundant, such as testing heart rate, recording steps and tracking tracks, etc. When the user is exercising outdoors, the GPS (Global Positioning System, Global Positioning System) in the smart wearable device can be used for positioning, so as to obtain the user's motion track. However, in order to reduce cost and power consumption, smart wearable devices usually omit the configuration of the GPS module. Even if the GPS module is configured in the smart wearable device, the GPS will not be turned on frequently. In addition, when the user passes through high-rise buildings or other roa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20G01C21/16G01S19/47
CPCG01C21/165G01C21/20G01S19/47
Inventor 李家祥周舒然龚亚光
Owner MOBVOI INFORMATION TECH CO LTD
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