CN-120488466-B - Intelligent underground space smoke exhaust system

CN120488466BCN 120488466 BCN120488466 BCN 120488466BCN-120488466-B

Abstract

The embodiment of the invention discloses an intelligent smoke exhaust system for an underground space, which comprises mechanical smoke exhaust equipment, natural smoke exhaust equipment, a sensing module and a control module, wherein the mechanical smoke exhaust equipment comprises a smoke exhaust fan, the smoke exhaust window is provided with an opening degree capable of being adjusted, the natural smoke exhaust equipment comprises a smoke exhaust fan, the smoke exhaust fan is provided with a fan rotating speed capable of being adjusted, the sensing module comprises sensor equipment, the sensor equipment is used for monitoring environmental parameters in the underground space in real time, the identification module is used for determining a smoke distribution matrix according to the coordinate parameters and the environmental parameters of the sensor equipment, and the control module is used for dynamically adjusting the fan rotating speed of the smoke exhaust fan and the opening degree of the smoke exhaust window according to the smoke distribution matrix, the mechanical smoke exhaust equipment and the data of the natural smoke exhaust equipment, so that the mutual interference between the natural smoke exhaust equipment and the mechanical smoke exhaust equipment is reduced.

Inventors

GU BIAO
Gu Jinlun
CHEN XUEJIAN

Assignees

广东东富博消防技术服务有限公司

Dates

Publication Date: 20260505
Application Date: 20250514

Claims (6)

1. An intelligent underground space fume extraction system, comprising: The natural smoke exhaust equipment comprises a smoke exhaust window, wherein the smoke exhaust window is provided with an opening degree which can be adjusted; The mechanical smoke exhaust equipment comprises a smoke exhaust fan, wherein the smoke exhaust fan is provided with an adjustable fan rotating speed; the sensing module comprises sensor equipment, wherein the sensor equipment is used for monitoring environmental parameters in an underground space in real time; the identification module is used for determining a smoke distribution matrix according to the coordinate parameters of the sensor equipment and the environmental parameters; The control module is used for dynamically adjusting the fan rotating speed of the smoke exhaust fan and the opening of the smoke exhaust window according to the smoke distribution matrix, the mechanical smoke exhaust equipment and the data of the natural smoke exhaust equipment, so that the mutual interference of the natural smoke exhaust equipment and the mechanical smoke exhaust equipment is reduced; The control module comprises a space coding module, a time sequence feature extraction module, a cross attention module, an interference suppression module and a collaborative decision module, and inputs a plurality of smoke distribution matrixes at different continuous time points into the space coding module to acquire a space attention feature map; The time sequence feature extraction module comprises a GRU module and a TCN module which are parallel, wherein the data of the mechanical smoke discharging equipment and the natural smoke discharging equipment respectively pass through the GRU module to output long-term time features of the mechanical smoke discharging equipment and the natural smoke discharging equipment, the data of the mechanical smoke discharging equipment and the natural smoke discharging equipment respectively pass through the TCN module to output local time features of the mechanical smoke discharging equipment and the natural smoke discharging equipment, the long-term time features and the local time features of the mechanical smoke discharging equipment are fused, and the long-term time features and the local time features of the natural smoke discharging equipment are fused to output the time sequence features of the mechanical smoke discharging equipment and the time sequence features of the natural smoke discharging equipment; the time sequence characteristics and the position parameters of the mechanical smoke exhaust equipment, the time sequence characteristics and the position parameters of the natural smoke exhaust equipment are input into the cross attention module to obtain a space-time coupling weight matrix representing an interference area, and the interference suppression module is used for obtaining a suppression thermodynamic diagram according to the space-time coupling weight matrix, the position parameters of the natural smoke exhaust equipment and the mechanical smoke exhaust equipment; And the collaborative decision-making module determines the fan rotating speed of each smoke exhaust fan and the opening of the smoke exhaust window according to the spatial attention characteristic diagram and the thermodynamic diagram.
2. The system of claim 1, wherein the sensor device comprises a temperature sensor and a smoke sensor, the sensor device being disposed on a ceiling of the subterranean space covering the entire subterranean space, the sensing module acquiring real-time environmental parameters at various locations of the subterranean space.
3. The system of claim 2, wherein the identification module obtains spatial information of an underground space, determines a shortest path distance between any two of the sensor devices based on the spatial information of the underground space and the coordinate parameters of any two of the sensor devices, and determines a shortest path distance between each predicted point and all of the sensor devices based on the spatial information of the underground space, the coordinate parameters of the sensor devices, and the coordinate parameters of the predicted points.
4. A system according to claim 3, wherein the identification module determines a weight vector according to the shortest path distance between any two of the sensor devices and the environmental parameter, obtains a predicted environmental parameter of each predicted point according to the shortest path distance between the predicted point and all of the sensor devices and the weight vector, and obtains the flue gas distribution matrix according to the predicted environmental parameter and the coordinate parameter of the predicted point and the environmental parameter and the coordinate parameter of the sensor devices.
5. The system of claim 1, wherein the interference suppression module comprises an interference intensity analysis unit and a suppression coefficient generation unit, the interference intensity analysis unit extracts the spatio-temporal features of the spatio-temporal coupling weight matrix, the spatio-temporal features sequentially undergo multi-head attention and max pooling operations to obtain intermediate features, and the intermediate features are mapped into interference intensity scores by using a fully connected layer, the suppression coefficient generation unit adjusts steepness parameters of a sigmoid function according to an average value of the interference intensity scores, the suppression coefficient generation unit obtains suppression coefficients by using the sigmoid function according to the steepness parameters and the interference intensity scores, and the interference suppression module forms a suppression thermodynamic diagram according to the suppression coefficients and position parameters of smoke evacuation equipment.
6. The system according to claim 1, wherein the collaborative decision-making module comprises a policy module and a value judging module, the policy module is provided with independent policy sub-networks for each natural smoke discharging device and mechanical smoke discharging device, a spatial attention feature map, a suppression thermodynamic diagram and position parameters of the smoke discharging devices are input into the policy sub-networks to obtain action probability distribution of the smoke discharging devices, the value judging module is used for establishing independent value evaluation models for each smoke discharging device, calculating dominant function values and objective functions of each state-action pair, updating parameters of the policy sub-networks according to the dominant functions and the objective functions, and outputting fan speeds of respective smoke discharging fans and opening degrees of smoke discharging windows which enable the objective functions to be maximum through repeated iteration updating.

Description

Intelligent underground space smoke exhaust system Technical Field The invention relates to the field of fire protection and smoke exhaust, in particular to an intelligent underground space smoke exhaust system. Background The smoke exhaust system is an important component of the fire-fighting facility of the building, is mainly used for rapidly exhausting smoke, high-temperature gas and toxic gas in fire disaster, ensures personnel to be safely evacuated, and creates favorable conditions for fire fighter extinguishment and rescue. The design and operation of the smoke discharging system of the underground space, such as an underground garage, a subway station, a civil air defense project, a tunnel and the like, face a plurality of special challenges due to the closed structure and poor ventilation condition, the underground space is lack of direct external openings, the number of natural smoke discharging ports is limited, the smoke discharging speed is low, natural smoke discharging depends on smoke to naturally rise, but the underground space layer is high and low, channels are tortuous, and smoke is easy to accumulate in dead corners, so that the mechanical smoke discharging equipment plays a great role in the underground space. However, because the underground space environment is relatively closed, when the mechanical smoke discharging device and the natural smoke discharging device work simultaneously, various problems can occur that the high-speed suction of the mechanical smoke discharging fan can damage the hot-pressing difference depending on natural smoke discharging, so that part of discharged smoke is sucked into the space again, unpredictable vortex is formed in the complex space by mechanical forced airflow and natural convection, smoke discharging is delayed, and when the natural smoke discharging device and the mechanical smoke discharging device are in the same closed environment, the natural smoke discharging port can become an air inlet. In a word, the natural and mechanical smoke discharging collaborative work is needed to solve the problems of air flow coupling instability, control timing sequence conflict and the like. Therefore, designing an intelligent underground space fume exhaust system is a problem to be solved by those skilled in the art. Disclosure of Invention In view of this, the embodiment of the invention provides an intelligent underground space smoke exhaust system, which dynamically controls the operation of natural smoke exhaust equipment and mechanical smoke exhaust equipment, reduces the mutual interference of the natural smoke exhaust equipment and the mechanical smoke exhaust equipment, and improves the smoke exhaust efficiency. In order to achieve the aim of the invention, the invention adopts the following technical scheme: An intelligent underground space fume extraction system, comprising: a mechanical smoke evacuation device comprising a smoke evacuation window having an adjustable aperture; the natural smoke exhaust equipment comprises a smoke exhaust fan, wherein the smoke exhaust fan is provided with an adjustable fan rotating speed; the sensing module comprises sensor equipment, wherein the sensor equipment is used for monitoring environmental parameters in an underground space in real time; the identification module is used for determining a smoke distribution matrix according to the coordinate parameters of the sensor equipment and the environmental parameters; And the control module is used for dynamically adjusting the fan rotating speed of the smoke exhaust fan and the opening degree of the smoke exhaust window according to the data of the smoke distribution matrix, the mechanical smoke exhaust equipment and the natural smoke exhaust equipment, and reducing the mutual interference of the natural smoke exhaust equipment and the mechanical smoke exhaust equipment. Optionally, the sensor device comprises a temperature sensor and a smoke sensor, the sensor device is arranged on a ceiling of the underground space and covers the whole underground space, and the sensing module acquires real-time environmental parameters of various positions of the underground space. Optionally, the identification module acquires spatial information of an underground space, determines a shortest path distance between any two sensor devices according to the spatial information of the underground space and coordinate parameters of any two sensor devices, and determines the shortest path distance between each predicted point and all the sensor devices according to the spatial information of the underground space, the coordinate parameters of the sensor devices and the coordinate parameters of the predicted points. Optionally, the identification module determines a weight vector according to the shortest path distance between any two sensor devices and the environmental parameter, obtains the predicted environmental parameter of each predicted point according to the shortest pat