29 results about "Fire alarm system" patented technology

The application provides a fire control method and device and electronic equipment, and relates to the technical field of nuclear power, and the method comprises the following steps: in the case that a fire alarm signal sent by a fire detector is received by a fire alarm system, the fire alarm system is used to send the fire alarm signal to a distributed control system (DCS); the fire alarm system is used to receive a device state control instruction sent by the DCS based on the fire alarm signal; and the fire alarm system is used to control the fire equipment to execute a fire operation indicated by the device state control instruction, wherein the fire equipment is the fire equipment indicated by the device state control instruction. According to the application, the fire alarm system is used to control the fire equipment to execute the fire operation, the fire alarm system can execute corresponding fire operations according to the device state control instruction of the DCS, and the fire safety of the nuclear power plant can be improved.

Example implementations include a method, apparatus and computer-readable medium for smoke detection using a smoke detector / fire alarm system implemented as a beam receiver and beam transmitter. In some examples, the beam receiver is configured to receive a plurality of beam pairs including a first beam pair, wherein each beam pair is received via one of a plurality of receive elements, and wherein the first beam pair is received via a first receive element and comprises a first beam and a second beam. In some examples, the beam receiver is further configured to compare a first delta between the first beam intensity and the second beam intensity at the first time instance with a second delta between the first beam intensity and the second beam intensity at the second time instance to determine whether to perform an action.

Some embodiments of the teachings herein include a method for recording measurement values relating to a fire characteristic variable indicating a potential fire incident and detected by a fire alarm device. An example includes: supplying energy to a central fire alarm system with a plurality of fire alarm devices connected via a common detector line for data transmission purposes; temporarily storing measurement values, if a current measurement value exceeds a threshold value indicating a potential fire incident, as a log recorded in a data memory of the respective fire alarm device; forming an incident data record upon completion of the recording from the respective measurement values together with header data; and transferring an incident data record by the respective fire alarm device in a temporally distributed manner and using multiple data transmission blocks released by the central fire alarm system to the central fire alarm system.

Described herein are devices, methods, and systems for extending a fire protection loop. An example device for a fire alarm system includes: a first communication path coupled to a first plurality of fire-sensing devices wired in a first loop; a second communication path coupled to a second plurality of fire-sensing devices wired in a second loop, wherein the second loop is independent of the first loop; and a controller configured to: drive the second plurality of fire-sensing devices of the second loop; and drive the first plurality of fire-sensing devices of the first loop during an occurrence of a failure event on the first loop.

This application discloses a system, method, apparatus, medium, and program product for implementing multiple monitoring centers in a fire alarm system. The system includes: a fire alarm system equipment layer; a main monitoring center; at least one backup monitoring center; and a proxy module for establishing an indirect communication connection between the fire alarm system equipment layer and the at least one backup monitoring center, synchronizing data from the fire alarm system equipment layer with the main monitoring center, and scheduling and distributing the data to each backup monitoring center. The technical solution in this application can implement multiple monitoring centers without loss of resources, configuration, or additional physical wiring at the fire alarm system equipment layer.

Described herein are self-test manual activation devices. A self-test manual activation device includes a switch configured to activate a fire alarm system, an actuator coupled to the switch and configured to activate the switch, and a controller configured to receive a command to test the self-test manual activation device and send a command to the actuator to activate the switch in response to receiving the command to test the self-test manual activation device.

This invention proposes a general strategy based on layer-by-layer (LBL) assembly to prepare flexible, multifunctional fabrics that combine motion / health monitoring and fire alarm functions. The coating formulation is environmentally friendly, fluorine-free, and halogen-free: first, reduced graphene oxide (RGO) is deposited on the fiber surface to construct a conductive network; then, a hydrogel layer is introduced; and finally, a hydrophobic surface is grafted via chemical vapor deposition (CVD) to obtain the RHP fabric. This fabric achieves a limiting oxygen index (LOI) of 42.3%, a 213% improvement over the original sample (19.9%), and exhibits excellent flame retardant properties. It also possesses a linear operating range of 100% strain, a high specification factor (GF=90.3), and a fast response / recovery time. Furthermore, the RHP fabric enables precise temperature sensing and exhibits a stable resistivity-temperature relationship. When integrated into fire-fighting suits, it can rapidly trigger a fire alarm upon flame exposure and achieve self-extinguishing flames. This layered design provides a scalable blueprint for the fabrication of high-performance multifunctional fire alarm systems and intelligent protective clothing.

The objective is to provide a fire alarm system that can reduce the manpower required for fire alarm testing. [Solution] The fire alarm system A1 comprises a control room master unit 100, multiple residential information panels 200, and a building receiver 300. The building receiver 300 is capable of transmitting a fire alarm signal S1 to at least one residential information panel 200. Based on the operator's actions, the building receiver 300 transmits the fire alarm signal S1 to the test object, which is at least one residential information panel 200. The test object performs a fire alarm test in response to the fire alarm signal S1. The control room master unit 100 displays on the display unit 12 the results of the fire alarm tests from the test object that meet predetermined conditions.

The present disclosure provides a communication protocol conversion method, module and fire alarm system. The method comprises: receiving a first communication protocol code sending signal from a controller, decoding the first communication protocol code sending signal to generate a logic signal; the controller uses a first communication protocol; generating a first control signal according to the logic signal; converting the first communication protocol code sending signal into a second communication protocol code sending signal based on the first control signal, and sending the second communication protocol code sending signal to a first type of detection device, the first type of detection device using a second communication protocol; receiving a first return code current signal in the second communication protocol pulled down by the first type of detection device under a second voltage signal, and converting the first return code current signal into a return code voltage signal; generating a second control signal according to the return code voltage signal; generating a second return code current signal in the first communication protocol according to the second control signal, and sending the second return code current signal to the controller.

This utility model discloses an integrated fire prevention and rescue space for a subway vehicle depot with a covered structure. It includes a large storage area for the subway vehicle depot, surrounded by fire truck access roads. Both ends of the fire truck access roads have safety exits leading directly to the outdoor ground. A fire-resistant building side wall connects the large storage area and the fire truck access roads, with entrances and exits connected to these two areas, each equipped with a fireproof door for personnel passage. Fireproof covers are installed between the large storage area, the fire truck access roads, and the overlying property development building, with supporting beams at the bottom of the fireproof covers. The fire truck access roads are equipped with a mechanical smoke extraction system, an indoor fire hydrant system, an automatic fire alarm system, emergency lighting and evacuation guidance systems, and an automatic sprinkler system. This utility model ensures excellent personnel evacuation performance and fire rescue safety for the covered vehicle depot.

This invention discloses a method and system for rapidly testing fire alarm devices, comprising: acquiring alarm parameters of the fire alarm device; triggering an alarm through an automatic fire alarm system according to the alarm parameters; obtaining audio sampling data and video frame sequences; acquiring audio topological features based on the audio sampling data; acquiring topological periodic features of the optical signal based on the video frame sequences; calculating the synchronization coefficients of the two modes for the audio envelope and the light intensity sequence of the optical signal; obtaining the audio-optic synchronization detection result; identifying test samples based on the audio-optic synchronization detection result; training a neural network model based on negative samples; identifying audio defects based on the trained neural network recognition model; and outputting the test result. This method utilizes persistent graph topological features, audio-optic synchronization coefficients, and a negative selection filtering strategy to improve the accuracy of identifying subtle audio-optic defects, enhance the adaptability of the testing system to different alarm models, and also has good interpretability.

The central control panel is used to obtain information corresponding to the location of people within the building subject to fire protection regulations. [Solution] The fire alarm system 1 comprises a fire detector 2 and a control panel 4. The fire detector 2 has a beacon 12 that receives beacon signals from portable terminals 6 carried by each person inside the building B, and transmits beacon information corresponding to the beacon signals. The control panel 4 acquires information corresponding to the location of the portable terminals 6 measured using the transmitted beacon information and displays it on a map of the building B.

Manual activation device isolation and testing is described herein. A manual activation device includes a switch configured to activate a fire alarm system and a controller configured to receive a command to enter a test mode for the manual activation device, indicate that the manual activation device is in the test mode in response to receiving the command to enter the test mode, receive actuation of the switch while the manual activation device is in the test mode, and indicate that the manual activation device has been tested in response to the actuation of the switch.

This invention belongs to the field of multi-sensor fire detection technology, specifically a high-accuracy fire alarm system and judgment method based on multi-parameter fusion. The system includes: a sampling differential construction module, a causal trend identification module, a light-temperature ratio inference module, a smoke-temperature abrupt change screening module, and a comprehensive trigger decision module. In this invention, the initial disturbance trend is constructed by processing the differential changes in temperature and smoke on a unified time axis; the thermal diffusion behavior path is constructed by the event sequence relationship between pressure changes and temperature changes; the directional consistency between optical attenuation and heat enhancement is extracted by the ratio structure of brightness changes and temperature changes; and the joint abrupt change information of the fire amplification stage is extracted by the synchronous transition of smoke changes and temperature changes. The correlation of multiple parameters in time segments is linked together in a continuous structure to form an overall fire trend chain from weak disturbance to thermal diffusion and then to abrupt change transition, realizing stable capture and accurate judgment of fire status under multi-stage conditions.

The present invention discloses a method, a detection device, a detection equipment, and a computer-readable storage medium for rapid detection of on-site compliance of an automatic fire alarm system based on the Internet of Things. This method performs fusion processing on the spatial point cloud data and visual image data collected on-site, extracts the three-dimensional spatial coordinates of the target fire alarm equipment, and compares them with the spatial deployment threshold range issued by the cloud platform to complete the automatic determination of the physical deployment compliance of the equipment. Secondly, the end-cloud communication delay is calculated by recording the on-site trigger timestamp and the cloud response timestamp, and at the same time, the state set of the linked devices is collected and mapped and compared with the linked logic topology matrix stored in the cloud platform to complete the automatic verification of the linked logic compliance. Finally, the physical deployment compliance status and the linked logic compliance status are integrated to generate a comprehensive detection result, thereby establishing a compliance closed-loop verification mechanism between the on-site physical space and the cloud digital system.

Test device (1) for the functional testing, in particular in accordance with standards and / or standardization, of an acoustic signal generator (2), in particular an acoustic signal generator (2) of a fire alarm system, in particular for conformity testing in accordance with the requirements of and / or in accordance with DIN EN 54-3, in particular by measuring and / or evaluating a sound pressure level of an acoustic signal (warning signal) generated by the acoustic signal generator (2), wherein the test device (1) comprises: - a reverberation chamber (3), in particular a box-shaped reverberation chamber, in particular wherein the reverberation chamber (3) comprises a plurality of chamber walls (4), in particular six chamber walls (4), and / or is composed of a plurality of chamber walls (4), in particular six chamber walls (4), preferably wherein the reverberation chamber (3) is bounded and / or formed by the chamber walls (4), - a device arranged in the reverberation chamber (3),preferably pivotably and / or rotatably mounted and / or attached, microphone (5) for detecting and / or recording an acoustic signal (warning signal) generated by the acoustic signal generator (2), in particular for detecting and / or recording a sound pressure level of an acoustic signal (warning signal) generated by the acoustic signal generator (2), in particular wherein the microphone (5) is arranged and / or attached and / or mounted on a chamber wall (4) of the reverberation chamber (3) by means of a microphone holding device (6), in particular pivotably and / or rotatably, - a test specimen holder (7) arranged in the reverberation chamber (3) for holding and / or receiving an acoustic signal generator (test specimen) (2) to be tested, in particular wherein the test specimen holder (7) is attached to a chamber wall (4), preferably to a chamber wall (4) opposite the microphone (5),preferably arranged and / or attached to one of the chamber walls (4) opposite the microphone holding device (6) for the microphone (5); wherein at least one ventilation opening (8A, 8B), preferably a perforation, is arranged and / or provided on and / or in at least one chamber wall (4), in particular for the preferably defined and / or predetermined inlet and / or outlet of air, preferably test atmosphere, into and / or out of the reverberation chamber (3) and / or in particular for the preferably defined and / or predetermined setting of environmental stress conditions in the reverberation chamber (3).

This technology provides an alternative to conventional fire alarms, enabling the detection of LP gas in addition to fire. [Solution] The fire alarm system (1) has a detection unit (11) which integrally includes a fire detection unit (13) and an LP gas detection unit (14). The LP gas detection unit (14) includes a light source (141) that irradiates light into the LP gas detection area and a light receiving unit (142) that receives reflected light from the LP gas detection area, and detects LP gas in the LP gas detection area based on the column density of LP gas obtained from the information of the reflected light.

The application discloses a kind of multi-dimension effective research and judge transformation power station in fire alarm system false alarm method, through acquisition and fusion smoke concentration, temperature, humidity, electromagnetic field intensity, grounding state and so on multi-channel sensor data, combine environmental label with operation and maintenance log to construct scene data set;Through normalization, wavelet denoising, dimensionality reduction and so on multi-level feature processing, improve data quality and distinguishability;Using space-time graph neural network realizes the division of multi-time period environment subarea and typical signal mode, and based on fuzzy set theory and bayesian inference, alarm signal is fused and judged in multiple time periods, realize the dynamic discrimination of false alarm and real alarm, the accuracy and robustness of the present application are effectively improved under complex environment alarm discrimination.

This invention relates to the field of offshore wind power energy storage safety, specifically to a fire alarm system for a wind turbine energy storage system. The system includes: a detection module for acquiring thermal runaway characteristic information of each battery module and battery pack within the energy storage compartment; a location module connected to the detection module and each battery module and battery pack; a data acquisition module connected to both the detection and location modules; an alarm module connected to the data acquisition module for local and remote alarm activation based on alarm commands; a fire suppression module connected to both the data acquisition and location modules for activating corresponding fire suppression devices based on received location information and fire severity level; and a management module connected to the detection, location, data acquisition, alarm, and fire suppression modules for remote monitoring and data management. This invention effectively curbs the occurrence and spread of fires at their source, significantly improving the safety of offshore wind turbine energy storage systems.

To provide an evacuation support system and evacuation support method that improves the accuracy of evacuation support. [Solution] The evacuation support system comprises a fire alarm system installed in a facility and having multiple fire detectors capable of detecting fires; a state acquisition unit that acquires state information including the number and location of persons to be evacuated within the facility; an evacuation estimation unit that estimates the evacuation behavior of human objects representing persons to be evacuated based on fire-related information including identification information of fire detectors that have detected a fire; the estimation unit sets an obstruction area that hinders the evacuation behavior of persons to be evacuated based on the fire-related information, estimates the evacuation behavior of human objects based on map information of the facility and obstruction area information indicating the obstruction area, and sets human objects whose evacuation behavior is hindered by the obstruction area as decelerating objects whose movement speed is slower than a preset movement speed of persons to be evacuated, or stationary objects that have stopped moving.

A method for a single person to fully test the smoke, heat, or carbon monoxide detection and warning functions of each alarm device of an interconnected fire alarm system comprising of two or more compatible interconnected alarm devices such as smoke alarms, heat alarms, or carbon monoxide alarms in any combination and with interconnections and power supplies of any type, the system including interconnected alarm devices with ON and OFF test switches instead of momentary action test switches, and the smoke, heat, or carbon monoxide detection and warning functions of each of the system's interconnected alarm devices are tested by a number of actions and verifications by a single person.

Fire extinguishing system for a test stand for vehicles (400), at least with a test area (100), a fixing element (101) for holding the vehicle (400) in the test area (100) and a fire alarm system (500), characterized in that the fixing element (101) can be opened in case of fire, and a linear drive is provided to move the vehicle (400) from the test area (100) into an extinguishing area (200).

To simplify the assignment of addresses to terminal devices in fire alarm systems. [Solution] A fire alarm system according to one embodiment includes a plurality of terminal devices installed in a monitored space and a receiver 10 that communicates wirelessly with the plurality of terminal devices. The receiver 10 has an addressing means 204 that assigns an address to each of the plurality of terminal devices based on the wireless communication strength at each of the plurality of terminal devices. Each of the plurality of terminal devices may have a barometric pressure sensor. The addressing means 204 assigns an address to each of the plurality of terminal devices based on the detected value of the barometric pressure sensor and the wireless communication strength at each of the plurality of terminal devices.

The utility model discloses a kind of smoke detection devices for fire alarm system, it is related to fire-fighting equipment technical field, to the problem of filter assembly maintenance difficulty in prior art, with time will lead to detection accuracy decline and single drive structure, present and propose the following scheme, including round shell, the outer wall both sides of round shell are respectively inserted and are fixed with air inlet pipe and air outlet pipe, and fan is fixedly installed in air inlet pipe, sequentially be provided with installation component, filter assembly and drive component from top to bottom in round shell, the installation component includes round plate, smoke detector fixedly installed in the center of round plate bottom.This utility model can realize efficient self-cleaning and maintenance convenience, rotate by driving motor driving rotating brush, automatically remove filter screen surface dust, the cooperation design of inserting rod and slot makes filter assembly quickly disassembled, cleaning can be completed without tool, servo motor dynamic rotating disc rotates, through inserting rod linkage bottom ring, the rotation of filter screen is realized Dust removal.

Obtain a fire alarm system that allows for the replacement of pre-configured addresses. [Solution] The fire alarm system 100 comprises a plurality of detectors 20, each having a rewritable address area 231 that stores a unique address, and a receiver 10 that is communicably connected to the plurality of detectors 20 based on their addresses. The receiver 10 performs an address change process, instructing each of the detectors 20 that are to be changed to change its own address to the address of the other target detector 20.

The application discloses a fire alarm system and method for automatically binding device identification and geographic information, and belongs to the field of fire alarm systems. The system comprises a fire alarm controller, at least one wired alarm loop, at least one wireless Mesh network, a plurality of wired alarm terminals and a plurality of wireless alarm terminals. The fire alarm controller is integrated with at least one wired loop interface and at least one wireless communication module, and is further integrated with a 4G communication module. The fire alarm system and method for automatically binding device identification and geographic information are convenient to deploy. The hardware identification can be used as soon as the hardware is installed, and the hardware address code can be automatically recognized, so that manual coding and position input are eliminated, the complexity of construction and debugging is reduced, and the deployment efficiency is improved by more than 80%.

This invention discloses a video-linked remote fire alarm monitoring and processing system, belonging to the field of fire monitoring and alarm technology. The proposed solution includes a terminal acquisition and linkage module, a data transmission module, a remote monitoring and processing center module, a database module, an image recognition and analysis module, and a smoke analysis module. These modules are interconnected to form a closed-loop architecture. This invention fundamentally solves many pain points of traditional fire alarm systems. Through the integration of multiple technologies, it achieves accurate fire identification; visual and intelligent linkage significantly improves emergency response speed; and the collaborative construction of multiple modules establishes a comprehensive fire control system. Simultaneously, robust data management ensures data security and provides support for the review and optimization of fire-fighting work. Overall, it achieves precise, rapid, and intelligent remote fire alarm monitoring, significantly improving modern fire safety prevention and control capabilities and adapting to the development needs of building intelligence and urban fire safety construction.

This application relates to a fire alarm information display method, a fire display panel, and a fire alarm system. The fire alarm information display method includes: upon receiving fire alarm information, acquiring configuration parameters; then, based on the configuration parameters, determining a corresponding display strategy; further, filtering the fire alarm information based on the display strategy; and determining whether to display the fire alarm information. This method enables the display of fire alarm information from both the current fire alarm zone and other fire alarm zones, achieving cross-zone and cross-circuit fire alarm information display. Simultaneously, it issues audible and visual alarms, expanding the warning range and facilitating timely evacuation and minimizing losses during a fire.