A method and system for locating people in an indoor environment

Abstract

A method and system for locating people in an indoor environment, wherein the method includes: Step 1. Preliminary modeling and generation of an indoor structure diagram of a building based on estimated information about the building, and according to the walking course and walking displacement of the person in the moving process Calculate the movement path of the person with the walking time; step 2, extract the data change characteristic value of the collected data, analyze the data change characteristic, and judge whether the current movement characteristic of the person satisfies the geographic tag attribute, and if so, it can be matched to If the existing geographic tags are present, the current location of the person is matched to the corresponding geographic tag of the indoor structure diagram, so that the calculated path is corrected to obtain the location information of the person. The method has the advantages of complex application environment, high positioning accuracy, and good system stability, and is suitable for fire extinguishing, special police tasks or anti-terrorism exercises.

Description

technical field [0001] The present invention relates to the technical field of positioning, in particular to a method and system for locating personnel in an indoor environment. Background technique [0002] At present, my country is in a period of economic transition and social transformation. With the acceleration of urbanization, various disaster-causing factors have also increased significantly. Severe fires and other disasters occur from time to time, and the scale of disasters continues to expand. Facing the complicated situation of fire fighting and rescue, a problem that cannot be ignored is that the proportion of casualties among firefighters in our country is gradually increasing. According to statistics, during the 10 years from 1997 to 2006, 131 firefighters across the country died and 1,610 were disabled. In just three years from 2007 to 2009, 153 firefighters across the country died and more than 500 were disabled. On average, nearly 30 firefighters die every...

AI Technical Summary

Problems solved by technology

[0004] Obtaining the situation of the fire scene only through observation, not knowing the location and movement of people in the building, not knowing the structure of the building and the fire situation, not knowing the location of the firefighters and the surrounding environment of the firefighters, so the commander lacks a comprehensive understanding of the situation on the scene. It is impossible to conduct detailed command on fire fighting, nor can it effectively organize follow-up rescue work, so it can only "do it in a hurry" outside

[0005] In addition, the questioning of insiders is highly subjective, and there are great potential safety hazards for firefighters to conduct in-depth investigations in person.

Therefore, these blind and inefficient fire rescue work is an important reason for the casualties of firefighters.

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