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Location estimation device, location estimation method, program, and integrated circuit

An inference part and inferred technology, applied in the direction of measuring devices, positioning, electrical components, etc., can solve problems such as difficult application and lack of actual measurement methods, and achieve the effect of improving the accuracy of position estimation

Active Publication Date: 2013-07-03
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, according to the above-mentioned conventional method, it is necessary to obtain the location information of a specific terminal using some kind of actual measurement means, so it is difficult to apply to wireless terminals that do not have actual measurement means.

Method used

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  • Location estimation device, location estimation method, program, and integrated circuit
  • Location estimation device, location estimation method, program, and integrated circuit
  • Location estimation device, location estimation method, program, and integrated circuit

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Embodiment approach ）

[0064] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The position estimating device 100 according to one aspect of the present invention is equipped, for example, in a wireless terminal such as a mobile phone, and has a function of estimating the current position of the wireless terminal (hereinafter referred to as a target terminal).

[0065]

[0066] figure 1 It is a block diagram showing the configuration of the position estimation device 100 according to the first embodiment. like figure 1 As shown, the position estimation device 100 includes a sensor unit 101 , a wireless processing unit 105 , a control unit 106 , and a storage unit 119 . In addition, the sensor unit 101 includes an acceleration sensor 102, an angular velocity sensor 103, and a geomagnetic sensor 104, and the control unit 106 includes a terminal information calculation unit 107, an autonomous navigation position estimation unit 110, a wireless stre...

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Abstract

One embodiment of this location estimation device is provided with the following: a provisional-location setting unit (114) that sets current-location information indicating an estimated current location of a wireless terminal; a distance estimation unit (112) that uses reception strengths of signals, received from a plurality of wireless stations including a mobile station, to estimate distance information indicating the distance from each of said wireless stations to the wireless terminal; a possible-location-region computation unit (117) that uses the distance information and map information indicating a spatial configuration, including the arrangement of subdivisions inside a building, to compute a region of said spatial configuration in which the distances indicated by the distance information could be maintained, said region serving as a possible-location region in which the wireless terminal could be located; and a correction unit (118) that, if the current location indicated by the current-location information is outside the possible-location region, corrects said current location to be inside the possible-location region.

Description

[0001] technology area [0002] The present invention relates to a position estimation device, a position estimation method, a program, and an integrated circuit for estimating the current position of a wireless terminal. Background technique [0003] In recent years, applications of HEMS (Home Energy Management System), which controls home appliances using IT (Information Technology), have been expanding, for example, in order to manage power consumption in response to environmental issues. [0004] In HEMS, it is necessary to have high-precision indoor position measurement technology in order to perform control such as power ON / OFF switching of home appliances based on the position of the user using the system. [0005] As an indoor position measurement technology, for example, there is a method of estimating the position of a wireless terminal by calculating the distance from the wireless station by using the property that the reception strength of a signal from a wireless ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/14H04M1/00H04W64/00G01S5/02H04W4/33
CPCG01S5/14H04W52/0245H04W52/0251Y02D30/70G01S5/0264H04W4/33G01S5/10
Inventor 山田和范大岛光昭
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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