Escape path planning method based on BIM technology

An escape route and route technology, applied in the field of escape route planning based on BIM technology, can solve problems such as danger, exit congestion, easy to get lost, etc., to reduce the possibility of death, avoid overcrowded exits, and reduce the probability of trampling.

CN112633574APending Publication Date: 2021-04-09中设数字技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-04-09

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Abstract

The invention discloses an escape path planning method based on a BIM technology, and the method comprises the steps: building fire simulation through fire-fighting dynamic simulation software, setting an infrared camera and a smoke alarm in a building as nodes, carrying out parameter initialization, then, calculating the probability of a trapped person k from the node i to the node j according to a state transition probability formula and selecting the next node for thetrapped person, wherein tauij (t) represents pheromones on a path from the node i to the node j at the moment t, alpha is an information heuristic factor and reflects the importance of a track, beta is an expected heuristic factor and reflects the importance of visibility, and eta ij (t) is a heuristic function; and guiding the trapped person to move to the node where the pass time and smoke amout are comprehensive smaller. The escape safety route is dynamically planned for the trapped person in real time by combining the dynamic fire behavior model of the building model BIM, so that the escape probability of the trapped person in a fire disaster is improved, and safe escape in a fire scene is realized.
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Description

technical field

[0001] The invention relates to the technical field of construction software BIM, in particular to a method for planning an escape route based on BIM technology. Background technique

[0002] With the development of society and economy, the floor area of ​​modern buildings is getting bigger and bigger, the floor design is also getting higher and higher, and the structure is also more and more complex. Due to the many routes in interior design, people are easy to get lost in the building, especially when an emergency occurs, it is not easy to find a better escape route at the first time.

[0003] The fire is a process of continuous spread. Only planning the escape route based on the current fire situation cannot ensure the safety of the escape route at the next moment. Moreover, the escape personnel are constantly moving, and the position cannot be sensed at each moment, so the current escape route cannot be guaranteed. The escape route is the safest escape r...

Examples

Embodiment Construction

[0036] The present invention provides a method for planning an escape route based on BIM technology, such as figure 1 shown, including the following steps:

[0037] S1. Construction of building infrastructure, including smoke alarms and infrared cameras. Smoke alarms and infrared cameras are installed along each path in the building. The infrared cameras have far-infrared imaging systems, and the smoke alarms and infrared cameras are connected to the remote monitoring system. , including voice announcer and emergency lights;

[0038] S2. Use the Fire Dynamic Simulation software PyroSim to create a fire simulation to predict the flow of fire smoke, fire temperature and concentration distribution of toxic and harmful gases. Specifically, in combination with BIM information, according to the position of the real fire, the simulated fire source is set in the PyroSim software, and the dynamic fire model is obtained through software simulation. The specific steps are as follows: th...