After-calamity search-and-rescue cluster locating method based on assist of air pressure and height measurement

Abstract

The invention disclose an after-calamity search-and-rescue cluster locating method based on assist of air pressure and height measurement, and relates to the technology of locating. According to the method, a mobile phone and a plurality of life detection instruments are included. The mobile phone and the life detection instruments are respectively provided a temperature and air pressure sensor, and the position of each life detection instrument is accurately measured firstly. Under the after-calamity condition, a trapped person decodes and modulates information such as the air pressure, temperature and life and then sends a distress signal through the mobile phone, and the life detection instruments receive the distress signal at the same time and process the distress signal to obtain measurement information such as the distance from the mobile phone to the life detection instruments. Information of distance measurement and the height of the mobile phone of each subsidiary life detect instrument is transmitted to a main life detection instrument through a communication link. Measurement data of the main life detection instrument and the subsidiary life detection instruments are combined with measurement data of the air pressure and the height of the mobile phone, weighting processing is carried out on the measurement data, absolute elevation of a user is obtained, the absolute elevation of the user serves as an auxiliary equation, the auxiliary equation is processed by the main life detection instrument and then the three-dimension position of the mobile phone is obtained. The method is simple and easy to implement, the obtained three-dimension position of the trapped person is accurate, and the search-and-rescue efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of positioning, and relates to a post-disaster search and rescue cluster positioning method based on barometric altimeter assistance. Background technique [0002] my country is one of the countries with the most severe natural disasters in the world, and is facing the characteristics of increasing natural disaster risks and rising disaster losses, especially catastrophic disasters such as earthquakes, mountain torrents and mudslides, which have caused serious casualties and property loss. There is an urgent need to adopt advanced positioning technology to improve the search and rescue capabilities and efficiency of people buried in ruins after disasters, and to minimize losses caused by disasters. [0003] Once an earthquake occurs in a relatively densely populated urban area, the burial space of the earthquake ruins will be large, and the number of casualties will be large. At present, the search and resc...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to disclose a post-disaster search and rescue cluster positioning method based on air pressure altimetry to solve the problem that the layout of life detectors is limited by the surrounding environment and facilities, and the geometric precision factor in the vertical direction is poor, resulting in low elevation positioning accuracy.

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