107 results about "Fire alarm system" patented technology

The invention discloses an Internet of Things networking scheduling method for railway tunnel disaster prevention illumination and evacuation indication, and relates to the technical field of railway tunnel disaster prevention. Comprising the following steps: S1, tunnel end monitoring equipment actively initiates environmental channel detection through a power line carrier communication network, scans impedance characteristics, noise levels and attenuation characteristics of different line sections in a tunnel, establishes a dynamic channel fingerprint database, and records an optimal communication frequency point and a channel quality threshold; and S2, performing real-time linkage between the local center monitoring main station and a fire alarm system, and after receiving a fire alarm signal, immediately generating a dynamic evacuation path through a disaster evolution prediction model according to a fire alarm position, a smoke diffusion state and a real-time channel state. The power line carrier communication module is utilized to actively perform channel detection and electrical parameter acquisition, a state channel fingerprint database is established, and fault diagnosis and state grading are performed based on the state channel fingerprint database, so that the overall reliability and maintainability of the scheme are improved, and the availability of equipment in a disaster is ensured.

The invention relates to the technical field of photovoltaic power station fire fighting, and discloses a distributed photovoltaic power station fire fighting alarm system based on big data. A data acquisition module of the system collects real-time operation data, environment monitoring data and thermal imaging data of a photovoltaic module; the hot spot identification module identifies a potential hot spot area and an abnormal temperature rise trend in combination with multiple types of data; the risk range determination module determines component-level, string-level and unit-level thermal risk influence ranges based on the topological knowledge graph; the monitoring area division module divides a global monitoring area and a local fine monitoring area according to a risk range and a fire-fighting specification; and the risk prediction and alarm module performs fire risk prediction based on the monitoring area data and generates graded alarm information. According to the system, through multi-source data fusion, accurate risk definition, monitoring layout optimization and graded alarm, the comprehensiveness and timeliness of distributed photovoltaic power station fire-fighting monitoring are improved, and the operation safety of the power station is guaranteed.

1. The name of the design product: graphical user interface of configuration gas fire extinguishing controller and fire alarm controller for electronic equipment. 2. The use of the design product: for electronic equipment. 3. The design points of the design product: in the graphical user interface. 4. The picture or photo that best shows the design points: design 1 front view. 5. Design 1 is designated as the basic design. 6. The use of the graphical user interface: adjustment configuration of functions of the fire alarm system. 7. The human-computer interaction mode of the graphical user interface: design 1 front view shows the interface of the new device of project programming of the fire alarm system, by clicking the drop-down arrow of the "device type" column box, design 1 change state diagram 1 is entered to select the device type; after selecting the device type, by clicking the "new" button in design 1 front view, design 1 change state diagram 2 showing the "controller" module is entered. Design 2 front view shows the interface of the "loop" module of project programming of the fire alarm system, by clicking the "point view" button on the right side of an item, design 2 change state diagram is entered. Design 3 front view shows the interface of the "controller" module of project programming of the fire alarm system, by clicking the "gas extinguishing controller" button, design 3 change state diagram is entered. Design 4 front view shows the interface of the "linkage logic" module of project programming of the fire alarm system, by clicking a check box in "zone A", design 4 change state diagram 1 is entered; by selecting "linkage equation" in the column box below "linkage mode", design 4 change state diagram 2 is entered; by clicking the "details" on the right side of a label (for example, general linkage equation 001), design 4 change state diagram 3 is entered. Design 5 front view shows the interface of the "main mapping list" module of "Modbus" of project programming of the fire alarm system, by clicking the "backup mapping list" button, design 5 change state diagram is entered, and design 5 front reference diagram is used to show that design 5 front view can have a drop-down interface. Design 6 front view shows the interface of the "database upgrade and download" module of the connected device of the fire alarm system, by clicking the "upgrade controller firmware" button, design 6 change state diagram 1 is entered; by clicking the "history record export" button, design 6 change state diagram 2 is entered. 8. Other circumstances that need to be explained: other views are omitted. The symbol "X" in the interface views of design 1 to design 6 indicates that the content such as text, symbol, icon, etc. can be changed or replaced.

The invention discloses an inspection method, system and device for a fire alarm system, relates to the technical field of fire safety, and solves the technical problems of low inspection efficiency and resource waste caused by the fact that a fixed period polling mode is generally adopted in the prior art, a large amount of redundant communication is generated, and system bandwidth and computing resources are occupied. A to-be-queried queue is constructed based on a state response result; generating an inspection result in an instruction sending mode based on the state type in the queue to be queried; based on the real-time load and the load change trend of the to-be-queried queue, an inspection cycle is generated in a self-adaptive mode, lightweight state response results of all fire-fighting components are rapidly obtained through the variable inspection cycle, then the to-be-queried queue is constructed only for the components with the state changed, and refined detailed state query is carried out. And finally, the next inspection period is dynamically and adaptively generated according to the load condition of the queue, so that the generation of redundant data is eradicated from a communication mechanism, and the problems of low inspection efficiency and resource waste are solved.

The present application relates to the technical field of early warning management platform, and specifically discloses a multi-source heterogeneous data fusion full-plant comprehensive early warning management platform and method, which comprises an image data acquisition layer, a data management layer, an early warning analysis layer, an application interaction layer and a security protection layer; the image data acquisition layer covers DCS system, NCS system, field inspection system, fire alarm system, video monitoring system and intelligent monitoring system data; the early warning analysis layer realizes alarm grading through three-level processes of weight calculation, severity evaluation and score correction; the application interaction layer is linked with the early warning analysis layer, and triggers a differentiated push strategy according to the alarm level; and the security protection layer meets the requirements of the third level and above of the national energy group network security level protection. The core technical scheme (such as data graph construction logic, early warning algorithm model and security protection mechanism) of the present application is not limited to a specific unit type, and can be flexibly adapted to different types of thermal power projects such as 300MW-1000MW capacity gas turbines, coal-fired units, etc.

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.

Embodiments of the present application provide a fire alarm control circuit for a rail vehicle, a safety loop system, and a rail vehicle. When a first network is normal, a fire alarm test signal is output to a fire alarm controller, and the fire alarm controller performs a fire alarm test on the basis of the fire alarm test signal. When a test result of a fire alarm test circuit is normal and a second network is normal, a fire alarm activation circuit is activated, wherein the fire alarm activation circuit comprises a second network module and a fire alarm control relay. When the fire alarm activation circuit is activated, normally open contacts of the fire alarm control relay are closed, and self-locking contacts of a fire alarm relay are powered and self-locked. In this way, testing and activation before fire monitoring are completed, making preparation for a fire alarm system to subsequently enter a working state. Additionally, when a fault occurs in the test of the fire alarm system, a fault condition can be known in a timely manner, and the activation of the system can be suppressed in a timely manner, thereby reducing the impact on other systems affected by fire alarm signals, increasing safety coefficients of rail vehicles, and providing a guarantee for the safe operation of trains.

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.

The invention provides a fire alarm, a spraying pollution self-checking method and a fire alarm system. The fire alarm comprises a bottom shell, a surface shell, a button and a sounder. The face shell is installed on the bottom shell, a through hole is formed in the face shell, the button is arranged in the through hole in a pressing mode, the sounder is installed on the side, facing the bottom shell, of the face shell, and a sounding hole is formed in the sounder; wherein a sound producing gap is formed between the hole wall surface of the through hole and the outer peripheral surface of the button, and the sound producing gap is communicated with the sound producing hole. The sounder of the fire alarm can make a sound by means of the gap between the button and the face shell, no sound hole needs to be additionally arranged, the design cost and the processing cost are reduced, the risk that pollutants enter the alarm main body can be reduced, and the alarm effect of the fire alarm is improved.

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.

The application discloses a kind of fire automatic alarm system graph generation method and system for ring connection, specifically relates to engineering system graph generation technical field, and its technical points are: in the connected equipment set of visited wire and cable, extract an unvisited plane electrical equipment, and successively access and record all plane electrical equipment and wire and cable on the ring line containing the plane electrical equipment;After accessing and recording complete all ring lines of one fire terminal box, then access the next fire terminal box of connected wire and cable set not empty;After accessing all connected wire and cable set not empty fire terminal box, based on all plane layout equipment and wire and cable accessed, generate a result dictionary with plane layout equipment category as key, with the number of each category of plane layout equipment as value, and generate fire automatic alarm system graph using result dictionary.

The present application relates to action sensing mechanism, fire extinguishing device, fire alarm system and control method, the action sensing mechanism includes: temperature sensing trigger unit, including contact connection temperature sensing assembly and sliding assembly, the temperature sensing assembly supports and positions the sliding assembly under the condition that the ambient temperature where it is located is lower than the set temperature, and is separated from the sliding assembly under the condition that the ambient temperature reaches the set temperature;Detection unit is connected with the sliding assembly, and is used for detecting the displacement signal of the sliding assembly;The control module of the control unit is connected with the detection unit, the control module is connected with the intelligent terminal through the wireless communication module, the control module is configured to receive the displacement signal detected by the detection unit and convert the displacement signal into alarm information, and the alarm information is sent to the intelligent terminal through the wireless communication module.The present application can remotely alarm when fire occurs, so that the user or the fire department can timely understand the fire and quickly carry out fire extinguishing and rescue, and effectively reduce the loss of life and property of the user.

To obtain a fire alarm system with a configuration that simplifies the installation work of controlled devices that operate in conjunction with the detection results of detectors compared to conventional systems. [Solution] A fire alarm system comprising: a plurality of fire detectors installed in a fire monitoring area that detect the occurrence of a fire; a plurality of controlled devices that operate in conjunction with the detection results of each of the plurality of fire detectors; and a fire receiver that issues a fire alarm based on the detection results of each of the plurality of fire detectors and outputs a control command to execute the linked operation control of the linked controlled device based on the detection result of the fire detector that is the source of the connection, further comprising a wireless power supply unit that executes linked operation control by wirelessly supplying drive power to the linked controlled device based on the control command output from the fire receiver.

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.

The invention discloses a sounding component detection circuit and method, an alarm and a fire alarm system. The sounding component detection circuit comprises a main control module, a detection module and a sounding component. The main control module is used for sending pulse signals; the signal input end of the detection module is connected with the master control module and used for receiving pulse signals. The signal output end of the detection module is connected with the main control module and is used for outputting a feedback signal to the main control module; the first end of the sounding component is connected with the charge-discharge end of the detection module, and the second end of the sounding component is grounded; and the main control module is used for determining whether the sound production component fails or not according to the feedback signal. The invention provides a sound production component fault detection mode different from the prior art, in the detection mode, a driving module does not need to participate in driving the sound production component to operate, an original normal working circuit of the sound production component does not need to be changed, and the detection circuit is simple in structure.

The objective of this invention is to provide a fire alarm system equipped with a transmitter that is easy to use on train station platforms. [Solution] The fire alarm system of the present invention comprises a fire alarm transmitter installed on the platform doors of a train station and a display device installed on the platform doors of a train station, wherein when the transmitter is operated, the display device displays information related to a fire.

1. Name of the product in this design: Graphical user interface for operating a fire alarm system in electronic equipment. 2. Purpose of this design: An electronic device. 3. The key design features of this product are the content and layout of the graphical user interface. 4. The image or photograph that best illustrates the design's key features: the front view. 5. Other situations requiring explanation: This graphical user interface is used for human-computer interaction in the display and operation of the fire alarm system. It can be used as the control terminal of the fire alarm equipment. Click the yellow countdown band at the top of the main view to switch to interface change state diagram 1. Click the menu button in the upper left corner of interface change state diagram 1 to switch to interface change state diagram 2.

The invention relates to the technical field of fire-fighting alarm, and particularly discloses a sleep cabin fire-fighting alarm system based on smoke sensing-manual alarming double triggering. According to the invention, a smoke sensing and manual alarm double-trigger architecture is constructed, a timing window is started after a control module receives a primary alarm signal, and if a manual trigger signal is received within a preset time, the smoke detection sensitivity is adjusted from a first preset threshold value to a lower second preset threshold value for re-checking and confirmation; the problems that single smoke detection easily causes false alarm due to smoke dust interference and lacks manual confirmation links to cause missing alarm or delayed alarm of smoldering initial fire are solved, and the fire detection accuracy and the emergency response reliability of the sleep cabin are improved.

The utility model relates to the technical field of fire alarm systems, and discloses a bus detection device of a fire alarm system, which comprises a signal input module; a signal output module; a control module; a relay module; an isolation module; the signal input module can receive passive contact signals and current or voltage signals during detection, the flexibility and expansibility of the device are improved, the signal output module and the control module can quickly respond to instructions of the controller, fire fighting equipment is controlled to act, fire is put out in time, and the fire fighting safety is improved. The relay module can prolong the communication distance, enhance the anti-interference capability and ensure the stability and reliability in the signal transmission process, and the isolation module can quickly isolate the fault part when the system bus breaks down, so that the fault diffusion is prevented, and the stability of the device is further improved.

A method automatically monitors a working and / or storage environment of at least one mobile component of a gardening, forestry, construction, ground-processing and / or transport system that includes at least one motor-powered gardening, forestry, construction, ground-processing and / or mobile transport device. The component has a temperature sensor designed to detect a temperature of the working and / or storage environment. The method a) detects the temperature using the temperature sensor, and b) if a set of ambient fire criteria is met, wherein the set of ambient fire criteria is characteristic of a fire in the working and / or storage environment and includes at least one fire temperature criterion, wherein the fire temperature criterion is to be met by the detected temperature or a quantity based on the detected temperature, outputs and / or transmits an ambient fire alarm signal to a fire alarm system.

Methods and arrangements for visual inspection of fire alarms connected to a central fire alarm system via a detector line, in which a detector to be inspected on the detector line is placed in an inspection mode, wherein the detector in the selected inspection mode is configured to emit an optical signal in a wavelength range visible to the human eye and to receive the optical signal; performing visual inspection on the detector by a maintenance engineer; wherein, after the visual inspection has been performed by the maintenance engineer, a suitable light source (e.g., a flashlight) emits a suitable encoded or modulated light signal to the detector, the encoded or modulated light signal containing information about the success of the inspection; wherein the detector relays the content of the received signal to the central fire alarm system via the detector line; and wherein the detector outputs, after it has received the encoded or modulated light signal, a defined light signal (e.g., a flash sequence) as a feedback signal in a range of wavelengths visible to the human.

A control panel for a fire alarm system includes a microprocessor operable to send and receive data. The microprocessor has a serial peripheral interface with a master port and a slave port. A computing device has a Differential Manchester encoder configured to encode data received from the master port and a Differential Manchester decoder configured to decode frames and send the decoded data to the slave port. A method of sending and receiving data is also disclosed.

The utility model relates to the technical field of cable maintenance devices, and discloses a device for testing a temperature sensing cable, which comprises a box body assembly, the interior of the box body assembly is of a hollow structure, a first surface and a second surface of the box body assembly are provided with holes, and the first surface and the second surface are two opposite surfaces of the box body assembly. The hollow structure and the two open holes form an accommodating cavity for accommodating a temperature sensing cable; the heating piece is arranged in the box body and is used for heating the accommodating cavity; and the temperature control assembly is arranged in the box body, the temperature control assembly is electrically connected with the heating piece, the temperature control assembly is used for obtaining the temperature in the containing cavity, and the temperature control assembly is further used for controlling the heating temperature of the heating piece. The temperature-sensing cable monomer debugging device can reduce the test manpower demand, improve the working efficiency of testers, can be repeatedly used in a subsequent nuclear power unit, reduces the material loss, can be used for debugging the temperature-sensing cable monomer of a nuclear power plant fire alarm system, and can also be used for debugging other monomers equipped with temperature-sensing cables for nuclear power plant and the like.

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.

Order for the commissioning of a fire alarm system, including: a central server (S) set up to store a building plan (BP) and / or a building information model (BIM) for a building; a control unit (CU) which can be connected via a detector line (ML) to a plurality of detectors (M1 - M3) connected to it, wherein the control unit (SG) can be connected to the central server (S) via a suitable first communication link (KV1), wherein the control unit (CU) is configured to obtain a unique identification (ID) of one of the detectors (M1 - M3) via the detector line (ML) when one of the detectors (M1 - M3) is installed, wherein the control unit (SG) is further configured to send the received identification (ID) of the respective installed detector (M1 - M3) via the first communication link (KV1) to the central server (S) for storage in the digital building model (BIM); wherein the central server (S) is set up to determine an installation location of the detector (M1 - M3) upon receiving the identification (ID) of the detector (M1 - M3) and to store it accordingly in the building information model (BIM) and / or in the building plan (GP), the control unit (SG) is a test device which is set up to ensure operation of the detector line (ML) with a sufficient range of functions for commissioning the detectors (M1 - M3).

1. The name of the design product: the graphical user interface of an electronic device for operating a fire alarm system. 2. The use of the design product: an electronic device. 3. The design features of the design product: the content and layout of the graphical user interface. 4. The picture or photograph best indicating the design features: front view. 5. Other circumstances or explanations: the graphical user interface is used for human-computer interaction in the display and operation process of the fire alarm system, which can be used for the network display controller of the fire alarm system. Click the network menu button in the upper right corner of the front view to switch to interface change state figure 1. Click the arrow at the far right of the N2 row in interface change state figure 1 to switch to interface change state figure 2. Click the number 3 in the "feedback" column of the L5 row in interface change state figure 2 to enter interface change state figure 3.

The utility model discloses an intelligent fire alarm system for buildings, which comprises distributed fire detection equipment, a central controller and a cloud server which are connected in sequence, the distributed fire detection equipment comprises a plurality of detection equipment, and each detection equipment integrates a plurality of modules. Comprising a smoke detector, a temperature detector, a gas sensor, a self-diagnosis module, a positioning module, a wireless communication module and an edge calculation module, and the edge calculation module is connected with the smoke detector, the temperature detector, the gas sensor, the self-diagnosis module, the positioning module and the wireless communication module. The edge calculation module is in wireless communication with the central controller through the wireless communication module, and the central controller is in wireless communication with the cloud server. The distributed fire detection equipment monitors each area in real time by integrating a plurality of sensors, performs fire judgment based on sensor data in combination with an edge calculation module, and can respond at the initial stage of a fire to quickly trigger an alarm system so as to avoid fire spreading.

To quickly and appropriately judge and cope with fire occurrence information from fire alarm equipment by display control utilizing the information of a fire occurrence place for map information.SOLUTION: When receiving fire occurrence information from a fire alarm facility 1 or a house fire alarm facility 100, a server 28 communicatively connected to the fire alarm facility 1 through a predetermined network acquires map information from a map information database 30 or the like, displays a map including a fire occurrence building or the like in which the fire alarm facility 1 is installed on a screen, and arranges a fire occurrence mark in the fire occurrence building on the map. When a fire occurrence mark arranged in a fire occurrence building is selected and operated, the hierarchy of the fire occurrence building is displayed and a fire occurrence floor is colored and displayed, and when the fire occurrence floor is selected and operated, the floor map of the fire occurrence floor is displayed and the fire occurrence mark is arranged in the fire occurrence section of the floor map.SELECTED DRAWING: Figure 1