Position detection device and position detection method

A detection device, the technology of absolute position, applied in the direction of measurement device, measurement distance, mapping and navigation, etc., can solve the problems of unusable, continuous and high-precision detection of position, measurement error, etc.

Inactive Publication Date: 2017-02-15
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, although the absolute position can be detected using GPS or wireless device technology, there are problems such as measurement errors and unavailability in places where radio waves do not reach, so it may not be possible to continuously and accurately detect the position

Method used

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  • Position detection device and position detection method
  • Position detection device and position detection method
  • Position detection device and position detection method

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Experimental program
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no. 1 Embodiment approach

[0023] figure 1 It is a block diagram showing a configuration example of the position detection device according to the first embodiment. Such as figure 1 As shown, the position detection device 100 has: a position estimation unit 110 , an update unit 120 , a storage unit 130 and a position correction unit 140 . In addition, the position detection device 100 obtains an absolute position from the absolute position detection unit 1 and a relative position from the autonomous navigation processing unit 2 . The absolute position detection unit 1 and the autonomous navigation processing unit 2 are included in, for example, a terminal device held by a pedestrian (user) who is a mobile object.

[0024] The absolute position detection unit 1 detects an absolute position using GPS. For example, the absolute position detection unit 1 tries to detect every 5 seconds, and the longitude “X a " and latitude "y a ” is output to the position detection device 100. In addition, in the abso...

no. 2 Embodiment approach

[0110] Figure 8 It is a block diagram showing a configuration example of the position detection device according to the second embodiment. In the second embodiment, the same reference numerals are assigned to the same configurations as those in the first embodiment, and detailed descriptions of the same configurations may be omitted. In the second embodiment, functions, configurations, and processes other than the motion detection unit 3 , the update unit 220 , and the storage unit 230 described below are the same as those in the first embodiment.

[0111] Such as Figure 8 As shown, the position detection device 200 has: a position estimation unit 110 , an update unit 220 , a storage unit 230 and a position correction unit 140 . In addition, the position detection device 200 obtains an absolute position from the absolute position detection unit 1 and a relative position from the autonomous navigation processing unit 2 . In addition, the position detection device 200 acqui...

no. 3 Embodiment approach

[0136] In addition, the embodiment of the position detection device has been described so far, but it can be implemented in various forms other than the above-mentioned embodiment. Therefore, different embodiments will be described with respect to (1) correction parameters, (2) configuration, and (3) program.

[0137] (1) Correction parameters

[0138] In the above-mentioned embodiment, the position correction processing of the estimated position using the correction parameters ie l and θ has been described, but the calculated correction parameters may also be designed as follows: for the step "stepSize(t )" times "l" and adds "θ" to the direction of travel "direction(t)". That is, the calculated correction parameters can be applied at the time point of the output of the autonomous navigation process, and the same result can be obtained.

[0139] (2) Composition

[0140] In addition, information including processing procedures, control procedures, specific names, various da...

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Abstract

The position detection device includes a position estimation unit, an update unit, and a position correction unit. The position estimating unit estimates the position of the mobile body based on the absolute position of the mobile body and the position change of the mobile body obtained by the autonomous navigation method. The update unit updates a plurality of pieces of information for each area, based on at least one of the estimated position of the mobile object and the motion of the mobile object, that is, presence probability information indicating that the mobile object has a higher probability as it exists more frequently. The position correcting unit corrects the estimated position of the moving object based on the updated existence probability information so that the moving object exists at a position with a high probability.

Description

technical field [0001] Embodiments of the present invention relate to a position detection device, a position detection method, and a position detection program. Background technique [0002] Conventionally, among technologies for detecting the position of moving objects such as pedestrians, technologies using GPS (Global Positioning System), technologies using wireless devices, and technologies using dead reckoning are known. technology for positional changes, etc. Among these techniques, a technique using a wireless device is a technique for detecting the position of a pedestrian based on a communication state between a wireless device installed at an arbitrary location and a terminal device held by the pedestrian. [0003] In addition, although absolute position can be detected using GPS or wireless device technology, there are problems such as measurement errors and unavailability in places where radio waves do not reach, so continuous and high-precision position detect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/00
CPCG01C21/206G01C22/006G01C21/1654G01C21/188
Inventor 池谷直纪
Owner KK TOSHIBA
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