Building-structure-diagram-calculation-based indoor navigation system and method for firefighter
A technology for indoor navigation and firefighters, applied in the field of indoor navigation systems for firefighters, can solve problems such as the inability to see the screen clearly, achieve the effects of improving safety factor, improving rescue efficiency and probability, and saving construction costs
Inactive Publication Date: 2018-04-20
TIANJIN UNIV
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At the same time, an ultrasonic sensor is added to the handheld device to achieve sensory distance measurement and obstacle avoidance, and the voice prompt function is coupled to solve the problem that the screen cannot be seen clearly in the smoke of the fire scene.
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[0027] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the described specific embodiments are only for explaining and illustrating the present invention, and are not intended to limit the present invention.
[0028] The present invention proposes an indoor navigation system for firefighters based on the calculation of building structure diagrams, such as figure 1 As shown, the navigation system includes a command system and a fireman's handheld terminal. The command system includes a building structure diagram database, a communication module and a display module; The on-site command system of voice intercom is different. This system not only has the function of voice intercom, but also can limit the position of firefighters in the building on the command terminal based on the real-time positioning data of firefighters, and combine the data sent back by the detect...
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The invention discloses a building-structure-diagram-calculation-based indoor navigation method for a firefighter. After a fire alarm is received, a firefighter hand-held terminal retrieves and downloads a corresponding building structure diagram from a command system through a mobile network, wherein the building structure diagram is used for positioning and navigation in a scene of a fire. The method comprises: step one, carrying out initial positioning and real-time positioning of a firefighter at a fire site and carrying out dynamic calibration of the location of the firefighter; and steptwo, carrying out combustion point positioning at the fire site and firefighter navigation. According to the invention, the dynamic calibration is realized as follows: an RFID tag network is deployedin the building; when the firefighter is in an RFID tag identification range, an RFID reading and writing device in the system collects a position coordinate of the RFID tag and sends the position coordinate to a command system by a communication module; the command system updates a current position coordinate, obtained by real-time positioning, of the firefighter based on the position coordinate.Therefore, the firefighter is located precisely to realize navigation of the firefighter conveniently.
Description
technical field [0001] The invention relates to comprehensive technologies such as indoor positioning, signal processing and the Internet of Things, and in particular to an indoor navigation system for firefighters based on building structure diagram calculations. Background technique [0002] Fire has become one of the major disasters that endanger the safety of people's lives and property. In fire rescue, firefighters often affect rescue because they are not familiar with the environment and the thick smoke in the fire field. Therefore, it is imminent to realize the positioning and navigation of firefighters in buildings on fire. The extreme situation of the fire brings many challenges to the positioning and navigation in the fire building. At present, there are few researches on firefighters' navigation and positioning technology. The following technologies are currently available for firefighters' indoor positioning and navigation: [0003] Wang Shouhui and others prop...
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Login to View More IPC IPC(8): G01S19/46G01S19/47G01C21/20
CPCG01C21/206G01S19/46G01S19/47
Inventor 徐岩张家赫马建国
Owner TIANJIN UNIV