8 results about "Smoke signal" patented technology

This invention relates to the field of cable monitoring technology, specifically disclosing a cable fire monitoring system and method based on distributed optical fiber sensing. The distributed optical fiber sensing unit is attached to the cable or its surroundings, simultaneously collecting temperature, vibration, and smoke signals and converting them into optical signals. After signal demodulation processing, an intelligent early warning and positioning unit, combined with algorithms, diagnoses the status and accurately locates the cable. A coordinated response unit automatically executes alarm, fire extinguishing, and power-off operations, while a remote monitoring unit enables multi-terminal visual control. This invention overcomes the limitations of single-parameter monitoring, offering high monitoring accuracy and fast response, effectively reducing false alarms and missed alarms. It is adaptable to various complex environments, possesses advantages such as high stability, low maintenance costs, and no need for on-site supervision, and can be widely applied to various cable fire monitoring scenarios to achieve early detection and early handling of potential hazards.

This invention relates to the field of energy storage technology, specifically to a collaborative protection control system and method for fully silent liquid-cooled energy storage modules. The method establishes a thermal coupling topology diagram between energy storage modules, collects temperature, temperature rise rate, and smoke signals in real time, and uses sliding window filtering to determine a three-level safety status: pre-control, suppression, and emergency. It identifies modules that have reached the suppression level and determines the risk propagation domain based on thermal coupling weights. Electrical isolation and fire suppression are implemented on the affected modules, while neighboring modules are subjected to graded load reduction and enhanced thermal management according to thermal coupling weights. Under system resource constraints, fire protection resources for the affected modules are prioritized, and cooling resources are allocated to neighboring modules based on the product of thermal coupling weights and temperature indicators. This invention can accurately delineate risk propagation boundaries, achieve collaborative protection and optimized resource scheduling among multiple modules, effectively suppress the cascading spread of thermal runaway, and improve the safety and availability of energy storage systems.

The invention relates to the technical field of civil engineering safety monitoring, and particularly discloses a civil engineering site fire risk intelligent assessment system and method. The system comprises an image module, a smoke module and an AI module, the image module comprises a first camera and a second camera which are used for collecting image information of a construction site from different angles, and the smoke module comprises a plurality of smoke sensors which are used for sensing smoke signals in a specific area of the construction site. And the AI module comprises a position identification sub-module, a behavior identification sub-module and a smoke feature analysis sub-module, and is used for performing multi-dimensional fusion processing on the acquired images and smoke signals, and performing intelligent identification and risk assessment on the smoking behavior of the construction personnel based on a set risk scoring algorithm. According to the method, sensing signal triggering, image behavior analysis and multi-source information matching are combined, a set of three-dimensional and real-time smoking recognition and early warning mechanism is constructed, and the intelligent management level of construction site fire safety can be effectively improved.

The utility model relates to a ventilation equipment technical field, and disclose an intelligent ventilation linkage device, including the exhaust fan of wind pipe and wind pipe inside installation, the one end of wind pipe is inclined downward setting, and the bottom fixed communication of one end of wind pipe has monitoring pipe. This kind of intelligent ventilation linkage device, through the collaborative design of micro fan and monitoring pipe, initiatively accelerates the airflow flow around the wind pipe entrance, makes smoke concentration sensor can more quickly, accurately capture smoke signal, compared with traditional passive monitoring mode, significantly shortens the fire early warning response time, simultaneously, the axis alignment structure of monitoring pipe and micro fan ensures airflow directional flow, avoids monitoring blind area, further improves the reliability of fire prevention, and photovoltaic power generation module is powered for micro fan, realizes the self -sufficiency of clean energy, reduces the dependence on external power grid, reduces operating energy consumption.

The invention discloses a control method and system for a potassium ion aerosol fire extinguishing device based on big data analysis, and the method comprises the steps: collecting a temperature signal and a smoke signal through a plurality of types of detection devices, carrying out the fusion processing, and carrying out the grouping analysis of the fusion signal through a data grouping method, and precisely obtaining a fire source position coordinate; and extracting temperature gradient data of a surrounding area based on the fire source position coordinates, and performing time sequence prediction by using a prediction model to determine a fire behavior change trend. If the trend exceeds a preset threshold value, the adjusting module is activated, a peak intensity index is obtained from the trend to generate a spraying intensity parameter to control the release amount of the potassium ion fire extinguishing core, a directional control instruction is generated according to the parameter to adjust the spraying angle and flow, and fire source area coverage distribution is achieved. Through dynamic adjustment fusion of a fire source positioning mechanism of signal fusion and grouping analysis and temperature gradient time sequence prediction, accurate and efficient fire extinguishing is ensured, the fire response speed is increased, fire extinguishing resource utilization is optimized, and the fire spreading risk is remarkably reduced.

The invention discloses a fast throwing life buoy and a combined smog signal composite support, the fast throwing life buoy comprises a base plate (1), a steel plate (2), a flat iron smog signal support (3), three support columns (4) and a fast throwing life buoy frame (5), the base plate (1) is fixed on the bottoms of the three support columns (4), the steel plate (2) is installed on the fast throwing life buoy frame (5), and the steel plate (2) is installed on the fast throwing life buoy frame (5). The flat iron smoke signal support (3) and the quick-throwing life buoy frame (5) are fixed to the three supporting stand columns (4) respectively, and the quick-throwing life buoy and the combined smoke signal composite support are small in occupied space, convenient to construct and capable of improving the working efficiency and providing convenience for follow-up repair and maintenance.

The application relates to the technical field of smoke detection, in particular to a smoke detection and alarm mechanism, which comprises a mounting frame and a main shell mounted on the mounting frame; a control cylinder is mounted at the top of the inner cavity of the main shell; a detection cylinder is mounted at the bottom of the control cylinder; a rotating cylinder is mounted at the bottom of the detection cylinder and is fixed through a fixing disc; a detector is mounted in the detection cylinder; a plurality of detection tubes extending to the outside of the rotating cylinder are mounted at the bottom of the detector; when a small amount of smoke information is detected at the tail end of the detection tube, the suction direction of the rotating cylinder can be adjusted, and the suspicious air can be quickly sucked into the rotating cylinder and contacted with the middle part of the detection tube, so that the air can be fully detected, the smoke signal source can be accurately and efficiently judged, and whether the alarm is sent can be determined according to the result; compared with a traditional smoke detection alarm, the detection and alarm mechanism can suck a large amount of suspicious air in advance, full detection is realized, the early warning effect is better, and the overall mechanism is convenient to assemble, overhaul and maintain, and the use effect is better.

This invention discloses a novel pump-type perfluorohexanone (PFH) gas fire extinguishing system, comprising a main controller, a storage tank, a piping network, a detection component, and a gas replenishment component. The storage tank stores PPH extinguishing agent and is connected to a high-pressure pump, which is electrically connected to the main controller. The piping network is connected to the high-pressure pump and has multiple nozzles spaced apart on it. The detection component is electrically connected to the main controller and is used to detect the ambient temperature and smoke signals at the fire scene, transmitting these signals to the main controller. The gas replenishment component includes a nitrogen tank and a pressure regulating valve. The pressure regulating valve is connected to both the nitrogen tank and the storage tank and is electrically connected to the main controller. When the PPH extinguishing agent in the storage tank is extracted, the pressure regulating valve opens, replenishing the storage tank with nitrogen from the nitrogen tank. This invention avoids water vapor intrusion into the storage tank and prevents the hydrolysis reaction of PPH, thereby reducing the risk of corrosion and improving the reliability and safety of the system.