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Cellphone indoor positioning device and cellphone indoor positioning method on basis of various sensors

An indoor positioning and sensor technology, applied in services, measuring devices, instruments and other directions based on location information, can solve the problems of reduced positioning accuracy, large limitations, misleading and other problems

Inactive Publication Date: 2012-12-12
XIDIAN UNIV
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Problems solved by technology

But its disadvantage is: SoundSense is mainly used to discover sound events, it can recognize sound events well, but it will be very misleading to judge the current environment only based on the sound, because the sound characteristics of the same place are different at different times. must be the same, so the accuracy in identifying the environment is not high
The disadvantage of this system is that it is mainly aimed at relatively quiet indoor environments. The sound of quieter indoor environments is relatively stable, so the sound characteristics can well describe the characteristics of background sounds, but for noisy indoor environments, the positioning accuracy is lower. will be greatly reduced, and therefore more limited

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  • Cellphone indoor positioning device and cellphone indoor positioning method on basis of various sensors
  • Cellphone indoor positioning device and cellphone indoor positioning method on basis of various sensors
  • Cellphone indoor positioning device and cellphone indoor positioning method on basis of various sensors

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] refer to figure 1 , the mobile phone indoor positioning device based on multiple sensors of the present invention is mainly composed of an information collection module 10 , a feature extraction module 20 , a classification identification module 30 , a sensor control module 40 and an interface module 50 . in:

[0041] Information collection module 10: used to collect the background sound of the environment, the image of the environment and the Wi-Fi signal, and transmit the collected environmental information to the feature extraction module 20, which includes a sound collection submodule 101, an image collection submodule 102, Wi-Fi -Fi signal acquisition sub-module 103. The functions of each sub-module are: the sound collection sub-module 101 is used to collect the ambient background sound, and the audio is transmitted to the audio feature extraction sub-mod...

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Abstract

A cellphone indoor positioning method on the basis of various sensors mainly solves the problem that an existing cellphone indoor positioning technology can be only based on wireless electric positioning and is greatly limited in positioning. The steps for realizing the method includes utilizing a microphone, a camera and Wi-Fi (wireless fidelity) to collector background noise, light, color and Wi-Fi signal information of a prediction site; storing the collected information and performing feature extraction to obtain feature vectors, and forming a training sample set; training a comprehensive weak classifier set H according to the training sample set; collecting background noise, light, color and Wi-Fi signal information of the current site, and storing and performing feature extraction; and outputting identifying results of the current site by means of feature vectors of the current site according to the comprehensive weak classifier set H. The cellphone indoor positioning method has the advantages of high accuracy and universality and low energy consumption and can be used for realizing positioning of cellphone indoor site types.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to mobile phone positioning technology, in particular to a mobile phone indoor positioning device and method based on various sensors, which can be applied to the positioning of indoor scene categories. Background technique [0002] Positioning technology plays an important role in military affairs, production and daily life. With the widespread use of mobile phones, precise positioning using mobile phones has become an increasingly common application and research direction in mobile phones. Positioning is mainly divided into indoor positioning and outdoor positioning, and the result of positioning is mainly divided into physical position and logical position. The physical location refers to the longitude and latitude of the positioning result, while the logical location refers to the current scene, such as a store, cafe, etc. At present, for indoor positioning, in order...

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Application Information

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IPC IPC(8): H04M1/725H04W4/02G01D21/02H04M1/72403
Inventor 刘惠杜军朝李赞刘悦韡陈文婧
Owner XIDIAN UNIV
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