Indoor positioning method and system
An indoor positioning and coordinate system technology, applied in the field of positioning, can solve the problems of no longer applicable, low precision of wireless network signal positioning technology, and convenient cost, etc., and achieve the effect of real-time positioning, low cost, and high positioning accuracy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0019] Example one
[0020] figure 1 This is a flowchart of an indoor positioning method provided in Embodiment 1 of the present invention. Such as figure 1 As shown, the method mainly includes the following steps:
[0021] Step 11. The mobile terminal receives sound waves of designated frequencies sent from speakers in various directions in a shaking manner, and calculates the Doppler frequency offset of the sound wave signal of each speaker when the mobile terminal is shaking.
[0022] The speakers can be pre-installed in various locations in the room, and each speaker sends a sine wave of a specified frequency, and the frequency is different from each other, so that the terminal can identify different speakers according to the frequency.
[0023] The mobile terminal in the user's hand (for example, mobile phone, tablet computer, palmtop computer, etc.) can receive sound wave signals by shaking. Therefore, the sound wave signals from all directions will be affected by the Doppler ef...
Example Embodiment
[0061] Example two
[0062] figure 2 This is a schematic diagram of an indoor positioning system provided in the second embodiment of the present invention. Such as figure 2 As shown, the system mainly includes:
[0063] The Doppler effect calculation unit 21 is configured to calculate the Doppler frequency offset of the sound wave signal of each speaker when the mobile terminal receives sound waves of specified frequencies sent from speakers in various directions in a shaking manner;
[0064] The mobile terminal initial position information calculation unit 22 is used to obtain the direction vector of each speaker sound wave signal according to the calculated Doppler frequency offset of each speaker sound wave signal and the speed vector of the mobile terminal in the world coordinate system, And calculate the initial indoor position information of the mobile terminal according to the direction vector of the speaker sound wave signal and the position of the corresponding speaker...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap