Three-dimensional emergency escape guiding method based on wireless sensor network

A wireless sensor and sensor technology, applied to instruments, life-saving equipment, respiratory protection containers, etc., can solve problems such as poor reliability and inability to obtain the best escape route

Active Publication Date: 2009-12-02
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing escape guidance methods that cannot obtain the best escape route and poor reliability, the present invention provide

Method used

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  • Three-dimensional emergency escape guiding method based on wireless sensor network
  • Three-dimensional emergency escape guiding method based on wireless sensor network
  • Three-dimensional emergency escape guiding method based on wireless sensor network

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Embodiment Construction

[0063] The present invention will be further described below in conjunction with the accompanying drawings.

[0064] refer to Figure 1 ~ Figure 2 , a three-dimensional building emergency escape guidance method based on wireless sensor networks, the method is divided into two parts: (1) initialization phase; (2) guidance phase.

[0065] (1) Initialization phase

[0066] The purpose of the initialization phase is to give the node a safe bootstrap under normal circumstances, such as Figure 1 The arrow in is the direction of safe guidance at regular time. In the 3D environment, the dangerous degree of the node is represented by the weight, the lower the weight, the safer, the minimum weight of the exit node is zero, and the maximum weight of the fire node. Since the nodes are on different floors in the 3D environment, the weight assigned to each node consists of two fields in the format of , where l represents the degree of danger of the floor where the node is located. In th...

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Abstract

The invention relates to a three-dimensional emergency escape guiding method based on a wireless sensor network, which comprises the following steps: 1) node initiation, namely setting a weight <1, w> of each node, wherein 1 refers to the danger level of a floor where the node is positioned, and w refers to the danger level of the node in the floor, and setting the following parameters: a constant D, Ai, Ai and e[i, j]; and 2) guiding process, wherein when a sensor node x senses fire, the sensor node x sets the self weight as Adis and simultaneously broadcasts an emergency message to the network, and other nodes decide self guiding directions through calculation after receiving the emergency message; and when a sensor node y receives an emergency message sent by a neighbor node z, the sensor node y updates a weight of z in a neighbor list by Az, and directs to a neighbor with the minimum weight. The method can obtain the optimal escape path, and has good reliability.

Description

technical field [0001] The invention relates to an emergency escape guidance method in a building. Background technique [0002] With the acceleration of China's urbanization process, high-rise buildings and complex buildings have become more and more common. In many places where the public gathers, such as hotels, hotels, nightclubs, dance halls, cinemas, small commodity markets and other buildings, the internal passages are intricate and the flow of people is huge. Once a disaster (such as a fire) occurs in these buildings, if there is no effective guidance to escape from the scene of the disaster, the consequences will be disastrous. According to fire statistics, there were 159,000 fires in my country in 2007 (excluding fires in forests, grasslands, military forces, and underground mines), killing 1,418 people, injuring 863 people, and causing direct property losses of more than 990 million yuan. Among them, 8,581 fires broke out in densely populated places, such as sho...

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Application Information

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IPC IPC(8): G05B13/00A62B99/00
Inventor 陈庆章叶培松赵小敏邵奔王尧洪卫丹蔡韶华
Owner ZHEJIANG UNIV OF TECH
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