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Mobile terminal with function of measuring distance and direction of wifi equipment

A mobile terminal, distance technology, applied in the field of positioning, can solve problems such as large positioning error

Inactive Publication Date: 2015-03-25
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Router---GPS joint positioning technology, for places where indoor GPS cannot cover, such as basements and relatively closed indoor environments, it can only be estimated by the known location of the nearest router, and the positioning error is also relatively large

Method used

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  • Mobile terminal with function of measuring distance and direction of wifi equipment

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Embodiment

[0014] Taking three ranging antennas as an example, the method for orienting the range finding device of the mobile terminal according to the present invention will be described in detail below. The process for the mobile terminal to perform ranging and orientation includes the following steps:

[0015] 1. On the mobile terminal, configure at least 3 mutually fixed and independent ranging antennas; it can be considered myopically that these ranging antennas are on the same plane, and this plane is regarded as a reference plane, and a reference coordinate space is established to measure distance The schematic diagram of the spatial coordinates between the antenna and the antenna of the wifi device is as follows figure 1 shown.

[0016] 2. At the same time, the radio frequency signal sent from WiFi reaches the independent ranging antennas on the mobile terminal after propagating through different paths in space. Due to the different propagation distances, the RF signals receiv...

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Abstract

The invention relates to the technology of positioning, in particular to a mobile terminal with the function of measuring the distance and the direction of wifi equipment. The mobile terminal with the function of measuring the distance and the direction of the wifi equipment comprises a mobile terminal body which has the wireless communication function and further comprises three ranging antennas and a phase discrimination ranging module, the ranging antennas are located on the same horizontal plane and used for measuring the distance with the wifi equipment, and the phase discrimination ranging module is used for obtaining the distance and the direction of the wifi equipment relative to the mobile terminal body by calculating the phase difference and the radio frequency carrier frequency of the wifi signals which are received at the same moment by the ranging antennas. The mobile terminal is suitable for measuring the distance and the direction between the mobile terminal and the wifi equipment.

Description

technical field [0001] The invention relates to positioning technology, in particular to a mobile terminal capable of measuring the distance and direction from a wifi device. Background technique [0002] At present, in the era when the Internet of Things and O2O are becoming increasingly mature and widely used, the requirements for the convenience and accuracy of mobile terminal positioning technology are getting higher and higher. However, the current technology for indoor positioning of mobile terminals using WiFi signal strength has a serious defect of large errors. At present, the well-controlled positioning error level is about 1 meter, and the usual error range is 3 meters to 9 meters. Router---GPS joint positioning technology, for places where indoor GPS cannot cover, such as basements and relatively closed indoor environments, it can only be estimated by the known location of the nearest router, and the positioning error is also relatively large. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/46G01S5/02
CPCG01S3/46G01S5/04
Inventor 余峰吴纯彬
Owner SICHUAN CHANGHONG ELECTRIC CO LTD