27 results about "Fire evacuation" patented technology

The invention relates to the technical field of evacuation intelligent simulation, in particular to a fire-fighting evacuation path dynamic planning method and system based on digital twinning. In the fire-fighting evacuation path dynamic planning method and system based on digital twinning, a digital twinning environment containing multi-dimensional real-time sensing data such as temperature, smoke and heat radiation intensity is constructed; the method can dynamically analyze space-time evolution characteristics such as fire spreading trend and heat accumulation, further carries out accurate quantitative evaluation on the danger level of each segment of an evacuation path, and meanwhile, integrates video monitoring and wireless positioning information to grasp the specific positions and moving tracks of people in a building in real time, thereby improving the safety and reliability of the evacuation path. The actual flow bottleneck is identified based on the flow direction consistency, the distribution density and the congestion condition of the crowd, and finally, the dynamic danger of the fire environment and the macroscopic flow trend of the crowd are combined, and the passage cost value of each path section is subjected to dual dynamic correction, so that the flow rate of the crowd is improved. And an evacuation path planning result giving consideration to fire hazard avoidance and crowd congestion evacuation is generated, so that the real-time performance and safety of evacuation decision making are effectively improved.

The embodiment of the invention discloses a BIM-based building fire evacuation analysis method and system. According to the technical scheme provided by the embodiment of the invention, the path cost is adjusted according to different fire stages of the fire evolution process, and the real-time evacuation path is planned based on the path cost, so that the environmental adaptability of the evacuation path can be remarkably improved, the fire evacuation path planning precision is improved, and the evacuation path can respond to the fire evolution. High-temperature areas, dense smoke areas, structure danger areas and crowded nodes are avoided all the time, the risk of path guiding errors caused by disaster changes is greatly reduced, and the escape success rate is increased.

The utility model relates to the technical field of building decoration, in particular to an embedded fire evacuation sign fixing frame which comprises two sets of fixing frame bodies installed on the two sides of an embedded hole in a wall, each fixing frame body is formed by overlapping an outer plate, a middle plate and an inner plate, the height of the middle plate is smaller than that of the embedded hole in the wall, and the height of the inner plate is smaller than that of the embedded hole in the wall. The outer plate, the middle plate and the inner plate are provided with holes and correspond in position, the outer plate is connected with the middle plate and the inner plate through bolts installed in the holes, and the fixing frame body is connected with the embedded equipment through bolts. The embedded hole fixing device is fixed at the two ends of the embedded hole of the wall body in a clamping manner, the embedded hole, the wall body and embedded equipment cannot be damaged, and the problems of loosening and falling caused by repeated disassembly and assembly are reduced.

The invention provides a community multi-source management information system and method based on an access control machine, and the system combines an Internet of Things fire-fighting sensing system, an access control terminal, a central control server, a property management and control background and an owner APP, and the Internet of Things senses community multi-source fire data and carries out the real-time fire early warning. The system can perceive fire conditions in real time and quickly perceive the fire conditions based on standardized fire emergency plan information support provided by a public security / fire-fighting platform, and the system gives emergency plans of corresponding levels and distributes the emergency plans to an access control machine cluster and a property management and control background. Emergency instructions are quickly responded through the access control system, emergency measures are displayed through a screen of the access control machine, real-time fire-fighting evacuation is guided for property management / owners, emergency response is quickly carried out, and the property management efficiency is improved. Once the fire behavior is sensed, the system associates and pushes the fire behavior condition and the emergency plan, compared with manual notification, the system is faster and more efficient, fire behavior emergency evacuation is prevented from being delayed by some owners due to reasons, and the safety service level of property management for the owners is improved.

The utility model relates to the technical field of tunnel engineering, and provides a shield tunnel fire-fighting evacuation structure which comprises a shield tunnel section, an open-cut tunnel section, a shield working well and a management storehouse, and the shield tunnel section comprises an upper driving layer, a lower evacuation layer and a first communication unit. The shield working well comprises a second communication unit, an upper space layer, a driving space layer and a fire-fighting evacuation layer, the upper space layer, the driving space layer and the fire-fighting evacuation layer are sequentially arranged from top to bottom, the driving space layer communicates with the upper driving layer, the fire-fighting evacuation layer communicates with the lower evacuation layer, and the second communication unit communicates with the fire-fighting evacuation layer and the upper space layer; the open-cut tunnel section comprises an upper functional layer and a lower traveling layer, the lower traveling layer is communicated with the traveling space layer, and the upper functional layer is provided with a special fire evacuation channel. The system is not interfered and hindered by vehicles on tunnel traffic lanes, fire disasters can be evacuated as soon as possible when found, and the operation efficiency, safety and comprehensive management benefits of the whole shield tunnel system are effectively improved.

The invention relates to the technical field of intelligent fire protection, and provides a building internal fire protection evacuation illumination ground minimum illumination automatic inspection system comprising a distributed light intensity sensing array composed of at least three groups of embedded sensing nodes; the illumination sensors are arranged in building evacuation aisles, places with dense people, evacuation staircases, front rooms or shared front rooms of the evacuation staircases, refuge aisles, front rooms of the refuge aisles and refuge floors, and are used for directly collecting ground horizontal illumination values E; and the central intelligent control unit is connected with the distributed light intensity sensing array through a duplex communication link, is provided with an inspection task scheduling module, a standard threshold storage module, a data comparison and diagnosis module and a trend analysis module, and is used for triggering an inspection task, receiving illumination data and executing threshold comparison and fault diagnosis. The inspection precision is improved through accurate acquisition and grading judgment, the response time is shortened by means of light attenuation pre-judgment and emergency linkage, the traditional inspection defects are overcome, and the reliability of evacuation illumination is guaranteed.

The utility model relates to high -rise building escape passage technical field discloses a kind of high -rise building escape passage smoke gas backflow guiding device, including first air pipe, the top and bottom of the first air pipe are respectively connected with connecting air pipe and passage air pipe, and the top of the connecting air pipe is connected with second air pipe, by setting switchable air guiding passage and matched fan, ventilation and air change between building interior and escape passage are realized under normal circumstances, airflow path leading to evacuation passage can be automatically closed under emergency such as fire, prevent smoke gas backflow, and smoke gas is quickly guided to building exterior and discharged, effectively improve high -rise building fire evacuation safety;Meanwhile, the device is equipped with synchronous driving's scraper cleaning mechanism, can automatically clean filter plate, avoid dust accumulation to influence smoke exhaust efficiency, ensure long-term stable operation of system.

The application discloses an underground parking lot intelligent fire-fighting evacuation method based on group theory, belongs to the technical field of cross of fire engineering, intelligent traffic and applied mathematics, and aims at the pain point of fire-fighting evacuation of an ultra-large-scale underground parking lot, realizes global optimization through three core mechanisms, including the following steps of S1, constructing a topological graph model and a permutation group congestion governance mechanism, generating a minimum cost permutation sequence to dynamically adjust vehicle distribution; S2, realizing partition autonomy and cross-zone cooperation based on normal subgroup theory, and guaranteeing load balancing through direct product decomposition; and S3, establishing a group homomorphism from a risk field to a path set, excluding high-risk paths through a homomorphism kernel, and dynamically generating a safe evacuation network. The application eliminates the conflict of opposite traffic flows through the commutative law of Abelian groups, realizes load balancing through a prime power constraint subgroup dynamic adjustment mechanism, and provides a reliable scheme for fire-fighting evacuation.

The invention relates to a dormitory building fire evacuation path optimization coupling simulation method, and belongs to the field of safety science and engineering. Constructing a fire cause model by fusing double theories to lock risk nodes; collecting data of personnel in a fire situation and performing simulation parameterization processing; building a BIM (Building Information Modeling) by utilizing Revit; according to the method, a fire disaster simulation result is coupled with evacuation simulation software, an evacuation simulation model is established, parameters are combined to simulate a multi-floor fire disaster scene through Pyrosim to identify three core threats of temperature, toxic gas concentration and visibility, Pyrosim and Pathfinder software are coupled to establish the evacuation simulation model, the association relationship among personnel evacuation timeliness, escape path smoothness and a fire source position is analyzed, and the fire disaster evacuation timeliness is analyzed. And an evacuation path optimization scheme is provided based on a simulation result. According to the invention, the evacuation key risk node can be accurately locked, the accuracy of evacuation simulation is improved, the coupling association between the fire environment and personnel evacuation can be established, and the safety of the evacuation path is improved.

The invention relates to a high-rise building fire emergency evacuation indicating system based on an unmanned aerial vehicle. The system comprises a fire behavior data acquisition module, a trafficability analysis module, a candidate path generation module, a fire behavior development prediction module, an evacuation path optimization module, an evacuation scheme generation module and an unmanned aerial vehicle instruction generation module. The fire data acquisition module responds to fire alarm and acquires real-time fire data; the trafficability analysis module analyzes the trafficability of the evacuation channel based on the real-time data and a preset building layout; the candidate path generation module generates candidate paths through an algorithm; the fire behavior development prediction module calls the model to predict the fire behavior trend; the evacuation path optimization module optimizes the path based on the prediction result; the evacuation scheme generation module formulates a scheme in combination with rules; the unmanned aerial vehicle instruction generation module generates a guide instruction to instruct evacuation. By adopting the system, the dynamic intelligent guidance of fire evacuation of the high-rise building can be realized, and the path planning accuracy and the personnel safety efficiency are improved.

The invention relates to a refuge equipment planning method and system based on traditional village feature analysis, and relates to the technical field of refuge equipment planning, and the method comprises the steps: obtaining the wood type, humidity, wood building topology and distribution information of a target village, and obtaining the ignition point distribution information through the ignition point mode analysis; a preset future time zone weather forecast is loaded, and temperature maximum value distribution information is obtained through analysis of a temperature extreme value prediction model bound with villages in combination with environment temperature and humidity; extracting a quasi fire area whose temperature maximum value is greater than or equal to the ignition point; when the number of the quasi-fire areas is larger than 0, refuge equipment distribution and material storage states are loaded; and configuring a refuge scheme, producing a village fire refuge strategy, and executing a preset future time zone refuge plan. The problems that in traditional village fire protection, wood building characteristics and extreme weather influence under climate change are not combined, accurate fire pre-judgment and adaptive refuge planning are lacked, personnel evacuation and escape are difficult in the fire, and the protection effect is poor are solved.

The utility model belongs to the technical field of fire-fighting evacuation signs, and discloses a fire-fighting evacuation guide sign with a striking alarm mechanism, which comprises a base, a support sleeve is fixed at the upper end of the base, a support rod is slidably connected to the upper end of the support sleeve, a guide board is fixed at the upper end of the support rod, and a mounting groove is fixed at the lower end of the front side of the guide board. A signboard is arranged at the upper end of the mounting groove, an indication board is arranged on the right side of the signboard, a clamping plate is arranged at the upper end of the guiding board and rotationally connected with the guiding board, and a limiting groove is formed in the lower end of the base. According to the fire-fighting evacuation guide sign with the striking alarm mechanism, by arranging the rapid positioning structure, the signboard and the indication board can be rapidly positioned, so that rapid disassembly and assembly are completed, meanwhile, the illumination lamp is arranged in a matched mode to illuminate the indication board, and when the sign is used in a dark environment, light reflected by the indication board is conspicuous and striking enough; and the escape personnel can find the escape path more quickly.

The application discloses a kind of personnel intensive place fire evacuation simulation optimization method and system, it is related to fire safety evacuation simulation and emergency path optimization technical field, division target evacuation area forms path unit, generates path unit state, exit bearing state and basic personnel state, constructs basic evacuation state array and carries out path smoke preliminary screening and exit bearing preliminary screening;When not passing in preliminary screening, based on visibility, temperature and carbon monoxide concentration critical time generates path unit failure time, filters out candidate path that personnel has failed when arriving;Again according to exit effective net width, current queue and predicted number of arrivals generates exit bearing duration, determines target evacuation path in combination with walking duration and congestion delay;Finally, single round feedback correction is carried out, and the output optimization evacuation scheme or priority rescue unit result can simultaneously constrain smoke time limit and exit bearing in path generation stage, improve the executability of evacuation scheme.

The application relates to a data processing system based on a multimodal fire prevention and control emergency evacuation large model, which comprises multiple cameras, multiple direction indicators and a multimodal fire prevention and control emergency evacuation large model; wherein each branch intersection in a target site is provided with a direction indicator; each direction indicator is bound with a direction determination task; when a fire evacuation alarm of the target site is triggered, each direction determination task is executed immediately and is repeatedly executed at a preset time interval; the global optimal evacuation path determination task is decomposed into multiple relatively lightweight and distributed local direction determination tasks, so that the response delay of single decision is reduced; and the direction determination task is repeatedly executed at a preset time interval, so that the evacuation path formed by the target directions displayed by the direction indicators can timely reflect the optimal evacuation path conforming to the current actual situation of the target site, and the overall evacuation efficiency can be improved.

The application discloses a design method and device of a communication passage of a double-line tunnel, equipment and a storage medium, relates to the technical field of tunnel engineering, and discloses a design method of a communication passage of a double-line tunnel, which comprises the following steps: matching adjacent point positions based on basic information of a plurality of line target positions corresponding to a first tunnel line and a second tunnel line respectively, determining a plurality of initial communication passages and corresponding center mileage information of a pump house based on a matching result; segmenting the first tunnel line by using the information and demarcation mileage information of a tunnel air shaft to obtain a plurality of evacuation segments; determining the number of target passages of each evacuation segment according to the segment spacing of the plurality of evacuation segments and a fire evacuation spacing, determining a plurality of target communication passages and corresponding center mileage information in combination with the center mileage information of each initial communication passage and pump house, and obtaining a communication passage design scheme. In the foregoing manner, batch design and automation of the communication passage layout scheme are realized, the design efficiency is greatly improved, and the error rate is reduced.

The application discloses a flexible wearable fire evacuation path planning and guiding device and method based on UWB sensing, and relates to the technical field of fire safety evacuation path planning.The system comprises a flexible wearable main body, a positioning communication module, an environment sensing module, a central control unit, a flexible driving module, a multi-modal interaction module and a building fire control system; wherein the positioning communication module fuses UWB, IMU, BIM constraints and SLAM positioning to realize failure completion, the central control unit performs multi-source fusion risk coupling positioning, regional risk assessment and old age adaptive dynamic obstacle avoidance path planning, the flexible driving module and the multi-modal interaction module cooperatively output power assistance, tactile, visual and auditory guidance, and link lighting, smoke exhaust, fire doors and other facilities, and are suitable for safe, efficient and continuous evacuation of people with difficulty in movement in a complex building fire environment, and improve path decision accuracy and linkage control reliability.

The invention discloses an urban office building fire personnel turn-back behavior evacuation efficiency analysis system and method, and belongs to the field of building emergency safety management, and the method specifically comprises the steps: collecting video and environment parameter data in a fire evacuation process in real time through a video monitoring unit and a sensor unit, carrying out the cleaning and fusion through a preprocessing unit, and carrying out the collection of the collected data; an evacuation efficiency evaluation module combines the characteristics of the turn-back behaviors, environmental parameters and evacuation time to evaluate the evacuation efficiency, and an intelligent optimization module generates an optimized evacuation strategy according to an evaluation result and provides real-time decision support and interactive training. And the innovative application module realizes data sharing, early warning linkage and visual display, so that the evacuation efficiency is improved, and the fire risk is reduced.

A wearable device for fire evacuation in a building includes a wearing part provided for a user to wear; a communication unit configured to be able to communicate with a disaster management device; an output unit provided in the wearing part to be able to output evacuation guidance information; and a control unit configured to determine an evacuation route corresponding to a position of the user in the building and an expected moving direction of the user on the basis of communication with the disaster management device through the communication unit, and when it is determined that the expected moving direction of the user does not follows the evacuation route, control the output unit to output the evacuation guidance information indicating a corrected moving direction.

The application belongs to the technical field of evacuation passageway, and discloses a high-rise building fire evacuation passageway facilitating escape, which comprises a passageway main body, an automatic response fire extinguisher arranged on the inner top wall of the passageway main body, an emergency lighting lamp arranged on the inner wall of the passageway main body, and a smoke exhaust mechanism arranged on the inner wall of the passageway main body, wherein the inner wall of the passageway main body is provided with a containing box, the side wall of the containing box is provided with a protective cover for closing the containing box, the inner wall of the containing box is provided with a plurality of supporting rods for placing towels, and the containing box is provided with a water spraying assembly for wetting the towels. The application has the effect of improving the use experience of the escape personnel.

A method and apparatus are provided for performing a fire evacuation simulation based on a spatial network of semantic digital twin virtual models that consider internal facility layout. Spatial semantic information about a building is generated on the basis of building information model (BIM) information about the building, and three-dimensional information about the building is generated on the basis of the spatial semantic information about the building, thereby implementing a virtual space. The three-dimensional virtual space of the building includes at least one layer including M unit spaces interconnected by N doors, and the space semantic information includes M unit space polygon information for shaping each unit space and external information. The space represents door object information of doors connected to the M unit spaces, a space connection matrix representing connectivity between the M unit spaces, and a door space table representing matching relationships between the M unit spaces, and determines the shortest. And setting an evacuation path for each unit space in the M unit spaces according to the spatial semantic information.

According to an embodiment, a method of operating an elevator system during a fire evacuation including: receiving a fire detection from a fire alarm system indicating a fire; detecting a fire intensity using a fire quantity measurement system; and determining a discharge landing for the elevator system in response to at least the fire intensity.

This invention discloses an evacuation simulation method based on a fire evacuation model that considers guiding factors. Based on a cellular automata model, it considers guiding factors and fire factors to construct a fire evacuation model that considers guiding factors (GF-CA), providing effective technical support and improvement suggestions for evacuation safety management.

The application provides a fire evacuation path planning method and device, equipment and a storage medium. The sensor data of each space node in a building BIM model is acquired, the pre-trained preset prediction model is combined to output CO concentration prediction data, smoke concentration prediction data, visibility prediction data and temperature prediction data, the preset grade threshold is used to determine the danger grade of each space node and a target space node with a non-dangerous danger grade, and the data amount of path searching is reduced. The comprehensive risk score of each target space node is obtained by weighted calculation according to the CO concentration prediction data, the smoke concentration prediction data, the visibility prediction data and the temperature prediction data of the target space node, and the fire evacuation path is determined based on the graph structure and the comprehensive risk score by using a path searching algorithm, so that the speed and accuracy of path searching are ensured.

The invention discloses an AI building intelligent fire-fighting evacuation indication system and method based on multi-mode guidance, and relates to the technical field of fire-fighting emergency lighting and evacuation indication. The system comprises a plurality of intelligent AI safety indication boards arranged in a corridor, and the indication boards are integrated with dynamic display modules and environment detection units linked with the indication boards; the system further comprises a double-link communication module which is used for conducting signal transmission through the building server when the main communication link is normal and automatically switching to a wireless network to be connected to the standby server when the main communication link is interrupted. According to the invention, a safe and effective exit is judged in real time through environment detection data, and visual visual guidance is provided for personnel through dynamic green arrows on the indication board. Meanwhile, according to the crowd state (such as the number of people and the face orientation) in the detection area, the comparison and analysis of the data of the temperature-sensing and smoke-sensing cameras at all exits of the whole building and a threshold value, the voice broadcast mode is intelligently switched. Precise voice instructions such as' please escape according to the direction indicated by a safety sign above the head ',' turn left 'or' return to a nearby room for fixed guard and waiting for help 'are provided, and an independent AI dialogue function is supported. According to the invention, multi-mode cooperative guidance of vision and hearing is realized, the problems of guidance failure and poor adaptability of single-mode guidance of a traditional static indication board are solved, and the efficiency and safety of personnel evacuation are remarkably improved.

The embodiment of the application discloses a building fire evacuation analysis method and system based on BIM. The technical scheme provided by the embodiment of the application can significantly improve the environmental adaptability of the evacuation path, improve the fire evacuation path planning accuracy, ensure that the evacuation path can respond to the fire evolution, always avoid the high-temperature area, the dense smoke area, the structure dangerous area and the crowded node, greatly reduce the path guidance failure risk caused by the change of disaster situation, and improve the success rate of escape.

The invention discloses an underground parking lot intelligent fire-fighting evacuation method based on a group theory, which belongs to the cross technical field of fire-fighting engineering, intelligent traffic and applied mathematics, realizes global optimization through a three-step core mechanism aiming at the fire-fighting evacuation pain point of a super-large-scale underground parking lot, and comprises the following steps: S1, constructing a topological graph model and a replacement group congestion treatment mechanism, generating a minimum cost replacement sequence to dynamically adjust vehicle distribution; s2, realizing partition autonomy and cross-region cooperation based on a regular subgroup theory, and ensuring load balance through a direct integral solution; and S3, establishing a group homomorphism from the risk field to the path set, eliminating a high-risk path through a homomorphic kernel, and dynamically generating a safety evacuation network. According to the method, opposite traffic flow conflicts are eliminated through the Abell group exchange law, load balancing is realized through a subgroup dynamic adjustment mechanism constrained by prime number power, and a reliable scheme is provided for fire evacuation.