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firefighter positioning system

A positioning system and technology for firefighters, applied in positioning, radio wave measurement systems, instruments, etc., can solve the problems that firefighters cannot obtain positioning information indoors, and signal transmitters cannot operate normally.

Active Publication Date: 2022-03-15
刘勉志
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when a fire breaks out, the iBeacon's signal transmitter is likely to fail to function normally due to a power outage, and firefighters will not be able to obtain positioning information indoors

Method used

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Embodiment Construction

[0029] Please refer to figure 1 , which is a schematic diagram of an embodiment of the firefighter positioning system of the present invention. Such as figure 1 As shown, the firefighter positioning system includes two first radio wave transmitting devices 101 and a positioning receiving device 110, wherein the two first radio wave transmitting devices 101 are separated from each other by a predetermined distance d in a first direction X and are respectively used A first radio signal S1 and a second radio signal S2 are transmitted, and the positioning receiving device 110 is worn or carried by a firefighter.

[0030] The first radio wave signal S1 includes a first frequency modulation signal generated by performing a modulation operation on a first carrier signal by a first base frequency signal, and the second radio wave signal S2 includes a first frequency modulation signal generated by the first base frequency signal A second frequency modulated signal generated by perfor...

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Abstract

A firefighter positioning system, comprising: a first radio wave transmitting device and a second radio wave transmitting device, separated from each other by a predetermined distance to correspondingly transmit a first frequency modulation signal and a second frequency modulation signal; and a A positioning receiving device, worn or carried by a firefighter, for receiving the first frequency modulation signal and the second frequency modulation signal, and demodulating the first frequency modulation signal with a first carrier signal signal to obtain a first output signal, and demodulate the second frequency modulated signal with a second carrier signal to obtain a second output signal, wherein the first output signal and the second output signal There is a phase difference between them, and the positioning receiving device determines an azimuth of the firefighter relative to the two radio wave transmitting devices based on the phase difference.

Description

technical field [0001] The invention relates to a firefighter positioning system. Background technique [0002] When a fire breaks out in a building, the interior is often blacked out and filled with smoke, making it difficult for firefighters to have a clear idea of ​​where they are in the building. [0003] In order to solve this problem, firefighters just need to configure a positioning device. [0004] Although GPS (global positioning system; Global Positioning System) can provide positioning function in open space, it is not suitable for indoor space. [0005] In order to solve the problem of indoor positioning, Apple released a positioning solution called iBeacon in 2013. The positioning scheme uses a signal transmitter to continuously broadcast signals. When a mobile phone enters the coverage of the signal transmitter, the signal transmitter will send a string of codes to the mobile phone to facilitate the mobile phone to obtain a positioning information. [0006]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/10
CPCG01S5/10
Inventor 刘勉志
Owner 刘勉志