Two-feet-positioning-based motion trail acquisition method

A technology of motion trajectory and acquisition method, applied in the directions of measuring devices, instruments, surveying and mapping, and navigation, etc., can solve problems such as the inability to use the equipment normally, the equipment cannot be measured normally, and achieve the effect of improving reliability and practicability

Inactive Publication Date: 2015-04-29
HUAQIAO UNIVERSITY +1
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Problems solved by technology

However, these devices cannot measure normally when people walk in places without GPS signal covera

Method used

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  • Two-feet-positioning-based motion trail acquisition method
  • Two-feet-positioning-based motion trail acquisition method

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] In order to realize self-positioning without external reference equipment, the present invention uses itself as a reference point to obtain the motion direction and step length. Among them, the measurement of the step length can use the ranging technology based on RSSI (Received Signal Strength Indication) to measure the distance between nodes. The principle is to use the specific relationship between the received signal strength RSSI and the transmission distance d (the principle of RSSI ranging and positioning belongs to the existing technology, no more details), calculate the distance by measuring the signal strength.

[0018] Therefore, the present invention provides a motion trajectory acquisition method based on two-foot positioning, which takes the two feet alternately as a reference point, and detects the direction and step leng...

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Abstract

The invention relates to a two-feet-positioning-based motion trail acquisition method which comprises the following steps: by taking two feet as reference points alternatively, detecting the direction and step length of each motion step of the other foot through RSSI, thus obtaining the motion trail. According to the two-feet-positioning-based motion trail acquisition method provided by the invention, the positioning process of a to-be-positioned article can be completed only by wearing a signal transceiver on a wearer under the condition of not utilizing external equipment. Through the two-feet-positioning-based motion trail acquisition method, the trail tracking and navigation positioning when no GPS signal exists indoors and outdoors can be effectively solved, and the positioning reliability and the positioning practicability can be greatly enhanced.

Description

technical field [0001] The present invention relates to a method for obtaining a motion trajectory, and more specifically, to a method for obtaining a motion trajectory based on two-foot positioning. Background technique [0002] Some devices can be positioned outdoors with the help of GPS and other positioning systems, and display the walking track of the person wearing it on the terminal. This kind of wearable device is easy to use and has high reliability. It can determine the positioning accuracy within tens of meters or even tens of meters. within meters. However, these devices cannot measure normally when people walk in places without GPS signal coverage, such as indoors, caves, seabeds and dense forests, and people often cannot use the devices normally. [0003] In order to solve the problem of not being able to locate under non-GPS conditions, we thought of using other methods to achieve the purpose of indoor positioning, that is, directly using several sensors to m...

Claims

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Application Information

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IPC IPC(8): G01C21/00
CPCG01C21/12
Inventor 莫冰曾显彬朱金林杨逸纯毛文辉蔡钧
Owner HUAQIAO UNIVERSITY
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