Method of measuring number of people based on geographic grids as well as method and system of monitoring crowd situation based on geographic grids

Abstract

The invention relates to a method of measuring number of people based on geographic grids as well as a method and a system of monitoring crowd situation based on the geographic grids. The method of measuring the number of people based on the geographic grids comprises the following steps of establishing the geographic grids for one area; projecting communication cells (CELL) on the geographic grids, calculating an overlapping area of each cell and each related geographic grid unit, and calculating the proportion of the overlapping area in the area of each CELL; obtaining the current number of mobile communication devices in each CELL, and distributing the number of mobile communication devices in each CELL to each related geographic grid according to the proportion of the overlapping area of each CELL and the corresponding grid in the area of each CELL; and counting the number of people, which is distributed from different CELLs by each geographic grid, to obtain the number of people in each geographic grid unit. A monitoring area is determined, and the crowd situation of the monitoring area is analyzed according to the number of people of each geographic grid. According to the method and the system, the crowd situation, such as crowd density and crowd flow condition, can be effectively monitored.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to a method and system for measuring the number of people based on geographic grids, and a method and system for monitoring crowd situation based on the method and system. Background technique [0002] The so-called "crowd situation" refers to the density, distribution, and flow of crowds in a certain geographical area within a certain period of time. Different events (such as parades, violent terrorist incidents) have different characteristics of the crowd situation. Through the monitoring and analysis of the crowd situation, the events and event types in the area can be obtained to provide basis and services for follow-up emergency measures. [0003] At present, the situation of the crowd is mainly monitored through video, audio, etc., but this method requires the installation and deployment of a large number of cameras and other equipment, the implementation cost...

AI Technical Summary

Problems solved by technology

Due to the following disadvantages, the actual operability of this type of monitoring method is not high:

[0007] 1) High cost: For example, the essence of patent CN102215468A is a changing triangulation method, which requires the installation of information collection equipment near each base station

Due to the huge number of base stations, this method has very poor scalability and is not suitable for monitoring large areas

[0008] 2) There are special requirements for equipment: for example, the GPS positioning method requires mobile communication equipment to install GPS positioning modules, and these modules must be activated

[0009] 3) The device needs to actively initiate positioning: For example, the traditional triangulation method needs to install corresponding software and the device initiates positioning actively, which is not feasible in the monitoring system

[0013] In general, the defect of this kind of monitoring method based on the communication cell as the basic unit is that it can better support the overall monitoring of the inflow and outflow of the crowd in the area, but it is not conducive to the monitoring of the crowd flow in the area

It is difficult to establish a simple mathematical model to express the crowd density and crowd distribution in the overlapping part of two base stations with the monitoring method of "taking the cell as the basic unit"

[0016] 2) It is not conducive to the monitoring of crowd flow

This is not only difficult to calculate the flow of people, but also not conducive to comparative analysis of historical data

[0020] To sum up, it is difficult to monitor the crowd density, crowd distribution, and crowd flow within the region with the crowd situation monitoring method of "community as the basic unit", which will lead to the lack of core content of crowd situation monitoring

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