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Crowd close contact investigating method based on positioning data

A positioning data, close technology, applied in epidemic alert system, medical informatics, informatics and other directions, to achieve the effect of improving computing efficiency, simple and effective methods, and improving the speed of investigation

Pending Publication Date: 2020-09-15
中网联金乐盟科技(北京)有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing positioning data analysis technology only solves the analysis of personal trajectories and the calculation of crowd density, and fails to evaluate and discover the spatio-temporal correlation between users in the data.

Method used

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  • Crowd close contact investigating method based on positioning data

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] A method for screening close contacts of people based on location data, such as figure 1 shown, including the following steps:

[0034] Step 101: Positioning data filtering: use the same user positioning data and the continuity of time changes to identify and delete wrong data in the data.

[0035] In this step, the object of positioning data preprocessing includes not only the spatial position coordinates (x, y, z), but also the time label t collected synchronously with the position coordinates. The data points can be expressed in the form of feature vectors:

[0036] In this embodiment, each set of positioning data includes: the ID number of the user, the spatial positioning coordinates (x, y, z) and the timestamp t generated with the spatial positioning coordinate data, and the data generated by the same user are processed according to the time...

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Abstract

The invention relates to a crowd close contact investigating method based on positioning data. The crowd close contact investigating method is technically characterized by comprising the steps of positioning data filtering, positioning data interpolation, seed user selection, data weight assignment, spatial-temporal feature filtering, data weight accumulation, self-defined automatic investigating,classification threshold calculation and investigating result output processing. The design is reasonable, real-time position monitoring and recording can be carried out on the user in a place covered by a positioning network, and crowd intensive management and control in the place are realized through the processing platform; meanwhile, historical position backtracking can be performed on specified individuals, so that groups in close contact with the specified individuals are accurately checked, the checking speed and the operation efficiency are improved, and the method is particularly suitable for analysis and filtering of large-scale and super-large-scale data sets.

Description

technical field [0001] The invention belongs to the technical field of target positioning and data analysis, in particular to a method for screening close contacts of people based on positioning data. Background technique [0002] Target positioning is a technical field generated to solve the measurement and analysis application of the user (or terminal) in the spatial position and the corresponding time stamp. Generally speaking, target positioning can be divided into outdoor positioning and indoor positioning. Outdoor positioning is dominated by satellite positioning technology represented by the global positioning system GPS; indoor positioning has many types, mainly including: Bluetooth positioning technology (iBeacon), WiFi positioning technology (WiFi fingerprint positioning), RFID positioning, inertial navigation positioning, ultra- Broadband positioning (UWB technology), laser ranging positioning, etc. At present, the outdoor positioning accuracy can reach up to 0....

Claims

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Application Information

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IPC IPC(8): G16H50/80
CPCG16H50/80
Inventor 刘东昌
Owner 中网联金乐盟科技(北京)有限公司
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