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A rapid method for calculating the number and orientation of people trapped in natural disasters based on mobile phone detection and positioning

A population and natural disaster technology, applied in the field of safety detection and rescue, can solve problems such as the difficulty of determining the trapped people's location, the lack of information on the number and orientation of the trapped population, the interruption of ground power and mobile communication, etc.

Inactive Publication Date: 2020-07-17
MIN OF CIVIL AFFAIRS NAT DISASTER REDUCTION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When severe natural disasters occur, such as earthquakes, floods, landslides and other disaster sites, ground power and mobile communications are often partially interrupted, making it difficult for search and rescue personnel to obtain effective information on the disaster site and to determine the specifics of the trapped people. Trapped locations, the deployment of search and rescue plans is difficult to rationally divide and deploy rescue forces according to the number of trapped people on the scene. The lack of information on the number and location of trapped people obviously limits the efficiency of search and rescue.

Method used

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  • A rapid method for calculating the number and orientation of people trapped in natural disasters based on mobile phone detection and positioning
  • A rapid method for calculating the number and orientation of people trapped in natural disasters based on mobile phone detection and positioning
  • A rapid method for calculating the number and orientation of people trapped in natural disasters based on mobile phone detection and positioning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0206] Embodiment 1 Basic deployment of a group of pseudo base stations

[0207] According to the role characteristics of the master base station and the slave base station, the radiation radius of the wireless wifi, and the detection radius characteristics of the pseudo base station, in order to ensure that the slave base station can transmit the detected mobile phone signal information to the master base station through wireless wifi, and at the same time between each slave base station There is no detection blind area, and the radius R=500m is selected as the distance between each slave base station and the main base station, and the coordinate points of the center points of the four pseudo base stations are {(x 0 ,y 0 ), (x 1 ,y 1 ), (x 2 ,y 2 ), (x 3 ,y 3 )}, where (x 0 ,y 0 ) means the main base station, (x 1 ,y 1 ),(x 2 ,y 2 ),(x 3 ,y 3 ) represents the slave base station, then the deployment of a group of pseudo base stations satisfies the following formu...

Embodiment 2

[0210] Example 2 Pseudo-base station deployment in which the long side of the minimum enclosing rectangle of the vector boundary of the disaster site area is in the horizontal direction

[0211] Let the long side of the smallest enclosing rectangle of the disaster site area = a, the short side = b, the unit is meter, and the coordinates of the four vertices of the vector boundary are respectively {(x 左上 ,y 左上 ),(x 左上 ,y 左上 ),(x 右下 ,y 右下 ),(x 右下 ,y 右下 )};

[0212] When its minimum enclosing rectangle satisfies the following conditions:

[0213] {(a≤1250)∪(b≤864)}

[0214] ②Main base station (x 0 ,y 0 ) starting position "1" (x 01 ,y 01 )for: The positions of the other three slave base stations (x 11 ,y 11 ),(x 21 ,y 21 ),(x 31 ,y 31 ) and the location of the primary base station (x 01 ,y 01 ) satisfies the following formula:

[0215]

[0216] Where n, n' represent the secondary base station, and n'≠n: n, n'=1,2,3;

[0217] The above is the deployment ...

Embodiment 3

[0250] Embodiment 3 Pseudo-base station deployment in which the long side of the minimum outsourcing rectangle of the vector boundary of the disaster site area is in the vertical direction

[0251] Let the long side of the smallest enclosing rectangle of the disaster site area = a, the short side = b, the unit is meter, and the coordinates of the four vertices of the vector boundary are respectively {(x 左上 ,y 左上 ),(x 左上 ,y 左上 ),(x 右下 ,y 右下 ),(x 右下 ,y 右下 )};

[0252] When its minimum enclosing rectangle satisfies the following conditions:

[0253] {(a≤1250)∪(b≤864)}

[0254] main base station (x 0 ,y 0 ) starting position "1" (x 01 ,y 01 )for: The positions of the other three slave base stations (x 11 ,y 11 ),(x 21 ,y 21 ),(x 31 ,y 31 ) and the location of the main base station (x 01 ,y 01 ) satisfies the following formula:

[0255]

[0256] Where n, n' represent the base station, and n'≠n: n, n'=1,2,3

[0257] The above is the deployment method (V) o...

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Abstract

The invention discloses a rapid measuring and calculating method for rapidly measuring and calculating a number and a direction of trapped population based on the detection and location of a mobile phone. The method deploys an unmanned aerial vehicle carrying a mobile phone signal detection pseudo base-station according to a terrain shape, an area and a direction of a disaster field, so that the number and the direction of the trapped population on the disaster field can be rapidly and efficiently measured and calculated in a shortest time. By adopting the method, more opportunities can be given to successfully rescue the trapped population, and valuable reference can be provided for the reasonable deployment of a searching and rescuing plan.

Description

technical field [0001] The invention belongs to the field of safety detection and rescue, and specifically relates to emergency search and rescue of trapped persons at natural disasters such as earthquakes, floods, debris flows and landslides. A mobile phone signal detection and positioning system carried by the man-machine performs on-site positioning and layout planning, and quickly calculates the number and orientation of the trapped population at the disaster site. Background technique [0002] When major natural disasters occur, such as earthquakes, floods, landslides and other disaster sites, ground power and mobile communications are often partially interrupted, making it difficult for search and rescue personnel to obtain effective information on the disaster site and to determine the specifics of the trapped people. Trapped locations, the deployment of search and rescue plans is difficult to rationally divide and deploy rescue forces based on the number of trapped p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/00H04W64/00
CPCG01S5/0036H04W64/006
Inventor 吕雪锋廖永丰邓岚
Owner MIN OF CIVIL AFFAIRS NAT DISASTER REDUCTION CENT
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