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Positioning method and mobile terminal

A technology of mobile terminal and positioning module, which is applied in directions such as navigation through speed/acceleration measurement

Active Publication Date: 2012-10-10
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing inertial navigation system needs to increase the reference point for continuous calibration, which increases the complexity and calculation amount of the system

Method used

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  • Positioning method and mobile terminal
  • Positioning method and mobile terminal
  • Positioning method and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] see figure 1 , this embodiment provides a positioning method, including:

[0063] Step 101: The mobile terminal obtains its own coordinate walking speed according to the user's step count value, and locates itself to obtain the first coordinate position;

[0064] Step 102: The mobile terminal calculates the second coordinate position of the mobile terminal according to the coordinate walking speed and the first coordinate position, and takes the second coordinate position as the result of this positioning.

[0065] The positioning method provided in this embodiment obtains the coordinate walking speed of the mobile terminal through the user's step count value, and calculates the second coordinate position according to the coordinate walking speed and the first coordinate position, and uses the second coordinate position as the current positioning As a result, it not only saves the process of calibrating the reference point in positioning, reduces the complexity and cal...

Embodiment 2

[0067] see figure 2 , this embodiment also provides a positioning method, including:

[0068] Step 201: the mobile terminal calculates the walking speed of the mobile terminal according to the user's step count value.

[0069] This step may specifically include: Step 2011 and Step 2012.

[0070] Step 2011: the mobile terminal subtracts the user's step count value during the last positioning from the user's step count value during this positioning to obtain the step count value difference;

[0071] The step value refers to the number of steps a person walks. For each step, the step value is increased by one. In the mobile terminal, the accelerometer is used to detect the number of steps a person walks. The mobile terminal will record the step value when it is positioned for the first time. It is initialized to zero, and then the acceleration of the mobile terminal is obtained through the accelerometer. Every time the acceleration exceeds the preset threshold value, the step ...

Embodiment 3

[0090] see image 3 , this embodiment also provides a positioning method, which is improved on the basis of embodiment 1 or 2, including:

[0091] Step 301: The mobile terminal obtains its own coordinate walking speed according to the user's step count value, and locates itself to obtain the first coordinate position;

[0092] Step 302: The mobile terminal calculates the second coordinate position of the mobile terminal according to the coordinate walking speed and the first coordinate position;

[0093] Step 303: Determine whether the user's step count value during this positioning is the same as the user's step count value during the previous positioning, if they are the same, execute step 304, if not, execute step 305;

[0094] Step 304: Calculate according to the following formula to obtain the third coordinate position, and use the third coordinate position as the result of the current positioning, and the process ends;

[0095] X i ...

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Abstract

The invention discloses a positioning method and a mobile terminal, and belongs to the field of communication. The positioning method comprises the following steps that the mobile terminal acquires own coordinate traveling speed according to a step recording value of a user and performs self-positioning to acquire a first coordinate position; and the mobile terminal calculates to acquire a second coordinate position of the mobile terminal according to the coordinate traveling speed and the first coordinate position, wherein the second coordinate position is used as a positioning result. The mobile terminal comprises a coordinate traveling speed module, a first coordinate position module, a second coordinate position module and a positioning module. According to the positioning method, a process for calibrating a reference point is eliminated, so that the complexity and the calculation amount of a system are reduced; and furthermore, the positioning accuracy and the positioning reliability are improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a positioning method and a mobile terminal. Background technique [0002] With the rapid increase of data services and multimedia services, people's demand for positioning and navigation is increasing, especially in complex indoor environments, such as airport halls, exhibition halls, warehouses, supermarkets, libraries, underground parking lots, mines, etc. , it is often necessary to determine the location information of the mobile terminal or its holder, facilities and objects indoors. [0003] The existing indoor positioning technology is mainly inertial navigation system. The inertial navigation system mainly includes accelerometers, gyroscopes or other motion sensors. The accelerometers are used to measure the linear acceleration of the system, and the gyroscopes are used to measure the angular velocity of the system. Under the given initial position and speed, the inertial naviga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16
Inventor 邓中亮曹佳雯余彦培王佳袁协尹会明
Owner BEIJING UNIV OF POSTS & TELECOMM