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A user walking positioning method based on inertial measurement unit

A technology of inertial measurement unit and positioning method, which is applied in directions such as navigation through velocity/acceleration measurement, and can solve problems such as reducing the universality of positioning algorithms

Active Publication Date: 2018-07-06
NANJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

For the positioning method based on the inertial measurement unit, the need for professional positioning equipment and other additional radio frequency positioning equipment also reduces the universality of the positioning algorithm

Method used

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  • A user walking positioning method based on inertial measurement unit
  • A user walking positioning method based on inertial measurement unit
  • A user walking positioning method based on inertial measurement unit

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Embodiment Construction

[0057] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0058] The present invention designs a user walking positioning method based on an inertial measurement unit. During the actual application process, by carrying the inertial measurement unit, the positioning for the user's walking position is realized. The positioning method specifically includes the following steps:

[0059] Step 001. The Euler angle of the inertial measurement unit is mainly composed of pitch angle, roll angle and rotation angle, which are usually used to describe the relative attitude of the object in the inertial space, such as figure 1 shown. Among them, the pitch angle and roll angle are usually calculated by a three-axis accelerometer, and the rotation angle is usually determined by a gyroscope or a three-axis magnetometer. Therefore, the terminal three-dimensional coordinate system T is establis...

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Abstract

The invention relates to a user walking location method based on an inertial measurement unit. When a pedestrian is located, only an intelligent mobile terminal integrating the inertial measurement unit in cooperation with a location scene map is needed to realize location application without depending on concrete conditions of equipment or setting up a fingerprint map in advance or using special location equipment. The location scheme is excellent in universality, and location application can be realized on location scenes with different hardware conditions.

Description

technical field [0001] The invention relates to a user walking positioning method based on an inertial measurement unit, which belongs to the application field of mobile computing technology. Background technique [0002] At present, the mainstream positioning algorithm is based on radio frequency technologies such as Wireless Fidelity (Wi-Fi), Radio Frequency Identification (RFID), and Bluetooth Low Energy (BLE). By using some typical positioning methods, such as the method based on the received signal strength, combined with the trilateration algorithm to calculate the pedestrian coordinates or using the fingerprint positioning algorithm to realize the pedestrian positioning application. Different from radio frequency positioning technology, pedestrian positioning using slave inertial measurement unit is a relatively new research direction. This type of positioning solution does not need to be equipped with professional radio frequency equipment in the positioning scene, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/16
CPCG01C21/16
Inventor 徐小龙王屹进孙雁飞徐佳王勇
Owner NANJING UNIV OF POSTS & TELECOMM
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