CN113256932B - Automatic fire alarm system - Google Patents
Automatic fire alarm system Download PDFInfo
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- CN113256932B CN113256932B CN202110430952.7A CN202110430952A CN113256932B CN 113256932 B CN113256932 B CN 113256932B CN 202110430952 A CN202110430952 A CN 202110430952A CN 113256932 B CN113256932 B CN 113256932B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/12—Manually actuated calamity alarm transmitting arrangements emergency non-personal manually actuated alarm, activators, e.g. details of alarm push buttons mounted on an infrastructure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/265—Mixing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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Abstract
The application relates to the technical field of building construction, in particular to an automatic fire alarm system which comprises an automatic fire alarm control host, a regional control extension, a fire detector, a manual alarm button and a fire-fighting linkage control module, wherein a camera is arranged on the fire detector; detecting and partitioning an area needing fire detection to obtain a plurality of detection subareas, wherein each detection subarea is correspondingly provided with a subarea control extension, each detection subarea is correspondingly provided with a plurality of fire detectors, each detection subarea is correspondingly provided with a plurality of manual alarm buttons, and the subarea control extension is electrically connected with each fire detector and each manual alarm button in the corresponding detection subarea; each zone control extension is respectively and electrically connected with the automatic fire alarm control host, and the fire-fighting linkage control module is controlled by the automatic fire alarm control main body. The method and the device have the effect of improving the accuracy of actual fire analysis of the fire early warning site.
Description
Technical Field
The application relates to the technical field of building construction, in particular to an automatic fire alarm system.
Background
In the building construction process, the installation and construction of building fire-fighting facilities are very important, and the method is an important measure for ensuring the building fire-fighting safety and the personnel evacuation safety. Generally, a building fire-fighting facility comprises an automatic fire alarm system, a fire hydrant system, an automatic spraying system, a gas fire extinguishing system, a fire door monitoring system and the like, wherein the automatic fire alarm system is an important basis of the building fire-fighting facility, the automatic fire alarm system is used for transmitting a fire alarm signal according to detection results such as smoke, temperature and the like by taking smoke, temperature change and the like generated by a fire as detection targets at the beginning of the fire, and meanwhile, people are warned to evacuate by using forms such as sound and light and the like, so that the aims of finding the fire in time and taking fire extinguishing measures in time can be fulfilled.
In the related technology, the automatic fire alarm system comprises a fire detector, an automatic fire alarm control host, an audible and visual alarm, a manual alarm button and a fire-fighting linkage control module, the fire detector, the manual alarm button is connected with the automatic fire alarm control host, the audible and visual alarm and the fire-fighting linkage module are controlled by the automatic fire alarm control host, the fire detector detects fire signals (smoke, high temperature and the like), the fire signals are fed back to the automatic fire alarm control host, or the manual alarm button is manually started, the manual alarm button transmits signals and feeds back the signals to the automatic fire alarm host, the automatic fire alarm control host controls the audible and visual alarm to carry out alarm reminding, and the fire-fighting linkage control module is simultaneously controlled to be started to realize fire-fighting linkage.
In view of the above-mentioned related technologies, the inventor believes that the automatic fire alarm system cannot analyze the actual fire situation of the fire early warning site, cannot select appropriate fire-fighting measures according to the actual fire situation of the fire early warning site, and is prone to cause excessive fire-fighting measures, thereby causing resource waste and loss.
Disclosure of Invention
In order to improve the actual fire analysis accuracy of the fire early warning scene, the application provides an automatic fire alarm system.
The application provides a conflagration autoalarm system adopts following technical scheme:
an automatic fire alarm system comprises an automatic fire alarm control host, a regional control extension, a fire detector, a manual alarm button and a fire-fighting linkage control module, wherein a camera is arranged on the fire detector; detecting and partitioning an area needing fire detection to obtain a plurality of detection subareas, wherein each detection subarea is correspondingly provided with one area control extension, each detection subarea is correspondingly provided with a plurality of fire detectors, each detection subarea is correspondingly provided with a plurality of manual alarm buttons, the area control extension is electrically connected with each fire detector and each manual alarm button in the corresponding detection subarea, a camera of each fire detector is used for carrying out video detection on the detection subareas, the fire detectors transmit obtained video pictures to the corresponding area control extensions in real time, and the area control extensions are used for scanning and analyzing the video pictures of the fire detectors to judge whether fire or smoke exists; each zone control extension is respectively and electrically connected with the automatic fire alarm control host, and the fire-fighting linkage control module is controlled by the automatic fire alarm control main body.
By adopting the technical scheme, the video detection of the camera is additionally arranged, the fire signal judgment can be carried out through the flame or smoke of the video picture, the visual intuition is realized, the fire simulation is enhanced by combining with electric signal alarm information such as smoke sense and temperature, the accuracy of the starting of the alarm early warning is improved, and after the alarm early warning is started, the automatic fire alarm control host can call the video picture of the detection subarea where the fire detector for starting the alarm is positioned, the fire condition of the early warning site is judged and confirmed intuitively again through the video picture, so that the possibility of false alarm is reduced, the accuracy of the actual fire condition analysis of the fire early warning site is improved, and the proper fire-fighting means is selected according to the obtained fire condition; meanwhile, the detection area of the automatic fire alarm system is divided into a plurality of area control extensions, video pictures of fire detectors in the corresponding detection sub-areas are processed by the area control extensions, and the processing results are fed back to the automatic fire alarm control host, so that the video processing pressure of the automatic fire alarm control host is reduced, the overload possibility of the automatic fire alarm control host is reduced, the video detection processing efficiency of the system is improved, and the system stability of the automatic fire alarm system is improved.
Optionally, the regional control extension sets up a three-dimensional scene for the corresponding detection sub-regions, each fire detector in the corresponding detection sub-regions has a corresponding three-dimensional coordinate position, a camera of each fire detector has a corresponding camera shooting range, the regional control extension sets a corresponding video detection region coordinate for the fire detectors according to the coordinate position and the camera shooting range of the fire detector, and the regional control extension determines a video detection overlapping region according to the video detection regions of the fire detectors; the area control extension carries out picture splicing on the video pictures of the fire detectors by taking the video pictures in the video detection overlapping area as splicing surfaces and transmits the video pictures to the fire automatic alarm control host; the video pictures in the video detection overlapping area are as follows: and the regional control extension respectively analyzes the picture tracks of the video pictures of the fire detectors in the video detection overlapping region, performs overlapping comparison on the picture tracks of the fire detectors in the video detection overlapping region, and fuses the video picture with the highest picture track overlapping degree to serve as the video picture in the video detection overlapping region.
By adopting the technical scheme, the image track analysis and fusion are carried out in the video detection overlapping area, the video splicing fusion is natural, the splicing trace is reduced, the video images shot by the cameras of all the fire detectors are spliced through the area control extension set to obtain the panoramic video images of the detection subareas, the panoramic video images of the detection subareas can be directly taken from the area control extension set by the automatic fire alarm control host, the fire evaluation analysis such as the fire cause, the fire position, the fire spreading hidden danger, the fire rescue means arrangement and the like of the detection subareas can be comprehensively considered through the panoramic video images, and the possibility of visual fatigue and analysis omission caused in the switching analysis process of a plurality of video images is reduced.
Optionally, the fire detector comprises a front housing, a circuit mounting plate, a middle housing, a rear housing and a base; the front shell is provided with a detection chamber, a detection port communicated with the detection chamber is formed in the front shell, and the circuit mounting plate is arranged in the front shell and is positioned above the detection chamber; the front shell is also provided with an indicator light; the circuit mounting plate is provided with a detection circuit board, the detection circuit board is provided with a fire detection module, the fire detection module is arranged in a detection chamber, one surface of the circuit mounting plate, which is far away from the detection circuit board, is provided with a micro driving motor, the micro driving motor is electrically connected with the detection circuit board, and an output shaft of the micro driving motor is provided with a bevel gear; the connecting wire of the indicator light is electrically connected with the detection circuit board; the middle shell is rotatably arranged at one end, far away from the detection chamber, of the front shell, the inner side face of the middle shell is an inclined side face, clamping teeth are arranged on the inclined side face, the inclined side face of the middle shell is matched with the bevel gear in an inclined angle, the clamping teeth on the inclined side face are in meshed connection with the bevel gear, the outer side face of the middle shell is embedded with the camera, and the camera is in radio connection with the detection circuit board; one end, far away from the front shell, of the middle shell is rotatably connected with the rear shell, a connecting column is arranged on the rear shell, an axial hole groove is formed in the connecting column, a metal layer is arranged in the axial hole groove, a connecting terminal is arranged on one side, far away from the connecting column, of the rear shell, a first metal screw penetrates through the rear shell and is locked into the axial hole groove of the connecting column, a second metal screw penetrates through the electric connection on the detection circuit board and is locked into the axial hole groove of the connecting column, and the second metal screw penetrates through the circuit mounting board and is locked into the axial hole groove of the connecting column; the base is provided with a threading hole and a terminal head, the base is connected with the rear shell, and the terminal head of the base is electrically connected with the connecting terminal of the rear shell.
By adopting the technical scheme, the camera is rotatably arranged on the fire detector through the middle shell, so that the panoramic shooting range of the camera is enlarged; meanwhile, the fire detection module combined with the fire detector can realize the combined detection and early warning of pictures, smoke sense or temperature and the like, improve the simulation of fire conditions and improve the accuracy of alarm and early warning.
Optionally, the fire detection module is a photoelectric smoke detection module, and the photoelectric smoke detection module includes a photoelectric generation device mounted on the detection circuit board, a black light-blocking fence covering the outside of the photoelectric generation device, and a black filter screen covering the outside of the black light-blocking fence.
Through adopting above-mentioned technical scheme, realize that the photoelectricity smoke feels and detect and the combination of video detection of making a video recording, the darkroom that black rail, black filter screen constitute that is in the light can make the light that is located photoelectric generation device wherein and sends not reflected, can completely cut off other light, dust impurity etc. entering in the external environment simultaneously, reduces the possibility that the cigarette felt the wrong report.
Optionally, the black light blocking fence includes black light blocking sheets and a black negative sheet, each black light blocking sheet is arranged on the black negative sheet in an annular array, the black light blocking sheet has a folded corner portion, and the folded corner portions between adjacent black light blocking sheets are sleeved at intervals.
Through adopting above-mentioned technical scheme, the dog-ear portion interval formula of black light barrier cup joints for each light barrier forms outside-in jointly and draws close the loop configuration, and when smog got into the detection room by detecting the mouth, the black light barrier can lead smog, makes the quick clearance by between the black light barrier of smog outside-in formula of gathering together get into the black rail that is in the light, with promotion cigarette sense detection efficiency.
Optionally, the indicating lamp is an annular indicating lamp band, the annular indicating lamp band is embedded in the outer side of the front shell in a surrounding mode and is located above the detection port, and a connecting wire of the annular indicating lamp band penetrates into the front shell and is electrically connected with the detection circuit board.
By adopting the technical scheme, the annular indicator light band can be used for observing the indicator light in multiple directions, the installation direction limiting requirement is reduced, the indication is obvious, and the identification is convenient.
Optionally, the outer side surface of the middle shell is an inclined surface inclined from outside to inside.
Through adopting above-mentioned technical scheme, on the inclined plane of casing in the camera was located, the correction of promotion camera direction of making a video recording can be to the effectual shooting in the region of fire detector below.
Optionally, a smoke blocking blade is arranged on the outer side surface of the front shell and above the detection port.
Through adopting above-mentioned technical scheme, the cigarette leaf piece that hinders that sets up on the procapsid can slow down smog toward the ascending speed that stretchs in procapsid top, promotes smog and detects the delay of mouth in the front of the casing, and the smog of being convenient for gets into the detection chamber by detecting the mouth, can slow down the nature of sheltering from of smog to procapsid top camera simultaneously.
Optionally, the smoke blocking blade is a helical blade spirally wound on the outer side of the outer shell.
Through adopting above-mentioned technical scheme, the length design that the spiral winding structure had lengthened the cigarette resistance blade has lengthened smog in the outer side of the preceding casing from bottom to top's the route of stretching, has slowed down smog and has upwards propagated the speed.
Optionally, the smoke blocking blade is an arc-shaped blade, the arc-shaped concave surface of the arc-shaped blade faces the outer shell, one end of the arc-shaped blade on the arc length is connected with the outer shell, and an opening is formed between the other end of the arc length and the outer shell.
Through adopting above-mentioned technical scheme, the arc blade forms one on the shells and hinders the cigarette cap structure, can hinder smog and stay in the arc concave, slows down smog and upwards spreads the speed.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the camera is additionally arranged on the fire detector, and the video picture, the smoke sensation, the temperature sensation and the like are combined to perform alarm and early warning, so that the fire simulation is improved, the alarm and early warning accuracy is improved, the fire confirmation can be visually performed, and the actual fire analysis accuracy of a fire early warning site is improved;
2. panoramic fusion and splicing are carried out on the video pictures, a panoramic fire observation scene is improved, and fire analysis comprehensiveness is improved;
3. the rotatable combination of camera is on fire detector, and the shooting range is wide, simultaneously, has designed on fire detector and has hindered the cigarette blade structure, can delay smog and upwards stretch speed, delays the nature of sheltering from of smog to the camera.
Drawings
Fig. 1 is a structural combination diagram of a fire detector according to embodiment 1 of the present application.
Fig. 2 is an exploded view of the fire detector according to embodiment 1 of the present application.
Fig. 3 is a cross-sectional view of the structure a-a in fig. 1.
Fig. 4 is an enlarged view of the structure at B in fig. 2.
Fig. 5 is a structural combination diagram of a fire detector according to embodiment 2 of the present application.
Fig. 6 is a structural combination diagram of a fire detector according to embodiment 3 of the present application.
Description of reference numerals: 1. a front housing; 11. a detection chamber; 12. a detection port; 13. an indicator light; 14. an annular chute; 15. a smoke-blocking blade; 2. a circuit mounting board; 21. detecting the circuit board; 22. a fire detection module; 221. a photovoltaic generation device; 222. a black light-blocking fence; 223. a black filter screen; 3. a middle shell; 31. clamping teeth; 32. a front annular slide table; 33. a rear annular slide table; 4. a camera; 5. a rear housing; 51. connecting columns; 52. a connection terminal; 53. buckling; 6. a base; 61. a terminal end; 62. threading holes; 63. and (4) clamping the hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses automatic fire alarm system.
Example 1
An automatic fire alarm system comprises an automatic fire alarm control host, a zone control extension, a fire detector, a manual alarm button and a fire-fighting linkage control module. The fire automatic alarm control host is arranged in the fire control room. The method comprises the steps of detecting and partitioning an area needing fire detection to obtain a plurality of detection subareas, wherein each detection subarea is correspondingly provided with an area control extension, each detection subarea is correspondingly provided with a plurality of fire detectors, each detection subarea is correspondingly provided with a plurality of manual alarm buttons, and the area control extension is electrically connected with each fire detector and each manual alarm button in the corresponding detection subarea. Each zone control extension is respectively and electrically connected with an automatic fire alarm control host, and the fire-fighting linkage control module is controlled by an automatic fire alarm control main body.
Referring to fig. 1 to 2, the fire detector includes a front case 1, a circuit mounting board 2, a middle case 3, a camera 4, a rear case 5, and a base 6.
Referring to fig. 2, a detection chamber 11 is convexly arranged at the front end of the front shell 1, and a detection port 12 communicated with the detection chamber 11 is formed in the front shell 1; a mounting boss is arranged at a position above the detection chamber in the front shell body 1, and the circuit mounting plate 2 is fixedly mounted on the mounting boss through screws; an annular indicator light belt 13 is further embedded on the outer side surface of the front shell 1, and the annular indicator light belt 13 is embedded on the outer side of the front shell in a surrounding mode and is located above the detection port 12; an annular slide 14 is provided on the rear end portion of the front case 1.
Referring to fig. 2 to 3, a detection circuit board 21 is mounted on the circuit mounting board 2, a fire detection module 22 is disposed on the detection circuit board 21, the fire detection module 22 is disposed in the detection chamber 11 of the front housing 1, and a connection line of the annular indicator light strip 13 is electrically connected to the detection circuit board 21; the fire detection module 22 is a photoelectric smoke detection module, and includes a photoelectric generator 221 mounted on the detection circuit board 21, a black light barrier 222 covering the photoelectric generator, and a black filter screen 223 covering the black light barrier. Referring to fig. 4, the black light-blocking fence 222 is composed of black light-blocking sheets and black negative sheets, each black light-blocking sheet is arranged on the black negative sheet in an annular array to form the black light-blocking fence, the black light-blocking sheets have folded corners, and the folded corners between adjacent black light-blocking sheets are sleeved at intervals. Referring to fig. 2 to 3, a micro driving motor 23 is installed on one surface of the circuit mounting plate 2 away from the detection circuit board, the micro driving motor 23 is electrically connected with the detection circuit board 21, and a bevel gear 24 is arranged on an output shaft of the micro driving motor 23.
Referring to fig. 2 and 3, a front annular sliding table 32 and a rear annular sliding table 33 are respectively and convexly arranged on the front end surface and the rear end surface of the middle shell 3, the front annular sliding table 31 of the middle shell 3 is rotatably inserted into the annular slide way 14 of the front shell 1, the outer side surface of the middle shell 3 is an inclined surface inclined from outside to inside, the camera 4 is embedded on the outer side of the outer side surface of the middle shell 3, and the camera 4 is in radio connection with the detection circuit board 21; the inner side surface of the middle shell 3 is an inclined side surface, the inclined side surface is provided with a latch 31, the inclined side surface of the middle shell 3 is matched with the bevel gear 24 in inclination angle, and the latch 31 of the inclined side surface is meshed with the bevel gear 24; the rear annular slide table 33 of the middle housing 3 is rotatably inserted into the rear housing 5.
Referring to fig. 2 and 3, a connecting column 51 is arranged on the rear shell 5, the connecting column 51 is provided with an axial hole groove, a metal layer is arranged in the axial hole groove, one side, away from the connecting column, of the rear shell 5 is provided with a connecting terminal 52, a first metal screw penetrates through the connecting terminal 52, the first metal screw penetrates through the rear shell and is locked into the axial hole groove of the connecting column, a second metal screw penetrates through the electric connection on the detection circuit board 21 and is locked into the axial hole groove of the connecting column, and the second metal screw penetrates through the circuit mounting board and is locked into the axial hole groove of the connecting column. The outer side surface of the rear shell 5 is provided with a buckle 53.
Referring to fig. 2 and 3, the base 6 is provided with a terminal 61 and a threading hole 62, the rear seat 6 is further provided with a clamping hole 63, the base 6 is sleeved on the rear shell 5, the buckle 53 of the rear shell 5 is matched and clamped with the clamping hole 63 of the base 6, and the terminal 61 of the base 6 is electrically connected with the connecting terminal 52 of the rear shell 5.
The implementation principle of the embodiment 1 is as follows: each fire detector combines smoke detection and video detection to the corresponding detection subarea, the camera takes a video record of the detection subarea in real time, the area control extension set sequentially scans, judges and stores the video pictures transmitted by each fire detector in real time, once the video pictures are scanned and judged by the area control extension set, the area control extension set immediately sends out alarm and early-warning prompts to the automatic fire alarm control host computer, and simultaneously controls the annular indicating lamp strip of the fire detector which takes the video pictures to send out flicker and early-warning prompts to wait for the response of the automatic fire alarm control host computer to the early-warning information reception, if the response time is over, no personnel still have early-warning reception and fire analysis operation responses on the automatic fire alarm control host computer, the fire automatic alarm control host directly and actively controls the fire-fighting linkage control module to start to carry out fire-fighting linkage; if the video picture detects early warning and alarming, and meanwhile, a fire detection module of the fire detector also detects smoke signals, the regional control extension set immediately sends out an emergency early warning prompt to the automatic fire alarm control host, and the automatic fire alarm control host directly and actively controls the fire-fighting linkage control module to start to carry out fire-fighting linkage without waiting for response. When the fire analysis operation is selected on the automatic fire alarm control host, the automatic fire alarm control host sends a fire analysis operation command to the area control extension which sends out alarm early warning, after the area control extension receives the command, the area control extension establishes a panoramic video picture for the detection subarea and feeds the panoramic video picture back to the automatic fire alarm control host, so that the comprehensive consideration can be visually carried out on the fire evaluation analysis of the fire authenticity, the fire reason, the fire position, the fire spreading hidden danger, the fire rescue means arrangement and the like of the detection subarea on the automatic fire alarm control host through the panoramic video picture, and the corresponding fire-fighting linkage measure selection operation is carried out according to the analysis result. Meanwhile, under a panoramic video picture, the automatic fire alarm control host can also independently call pictures in a certain specific range.
The method for the area control extension to establish the panoramic video picture of the detection subarea comprises the following steps: the regional control extension sets up a three-dimensional scene for the corresponding detection sub-regions, each fire detector in the corresponding detection sub-regions is provided with a corresponding three-dimensional coordinate position, the regional control extension sets the corresponding video detection region coordinates of the fire detectors according to the coordinate positions and the camera shooting ranges of the fire detectors, and the regional control extension determines a video detection overlapping region according to the video detection regions of the fire detectors; and the regional control extension carries out picture splicing on the video pictures of the fire detectors by taking the video pictures in the video detection overlapping region as splicing surfaces so as to obtain a panoramic video picture. The video picture processing in the video detection overlapping area comprises the following steps: and the regional control extension respectively analyzes the picture tracks of the video pictures of the fire detectors in the video detection overlapping region, performs overlapping comparison on the picture tracks of the fire detectors in the video detection overlapping region, and fuses the video pictures with the highest picture track overlapping degree to serve as the video pictures in the video detection overlapping region.
Example 2
Referring to fig. 5, the present embodiment is different from embodiment 1 in that a smoke preventing blade 15 is provided on the outer surface of the front housing 1 at a position above the detection port, and the smoke preventing blade 15 is a helical blade spirally wound around the outer side of the housing.
The implementation principle of the embodiment 2 is the same as that of the embodiment 1, and more preferably, when a fire occurs, the smoke straight-line rising spreading path is blocked by the spiral blade, the smoke is guided downwards on the blade surface of the spiral blade, and the spirally coiled spreading path is carried out, so that the rising spreading speed of the smoke is delayed, the shielding of the smoke on the camera is delayed, and more opportunities are provided for fire analysis and rescue.
Example 3
Referring to fig. 6, this embodiment is different from embodiment 1 in that a smoke blocking blade 15 is arranged on the outer side surface of the front housing 1 and above the detection port, the smoke blocking blade 15 is an arc-shaped blade, an arc-shaped concave surface of the arc-shaped blade faces the outer housing, one end of the arc-shaped blade on the arc length is connected with the outer housing, and an opening is formed between the other end of the arc length and the outer housing.
The implementation principle of embodiment 3 is the same as that of embodiment 1, and more preferably, a detention notch is formed between the arc-shaped blade and the front shell, and when fire occurs, smoke can flow in the detention notch when rising linearly, so that the smoke rising speed is slowed down.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (4)
1. An automatic fire alarm system is characterized in that: the fire alarm system comprises a fire automatic alarm control host, a region control extension, a fire detector, a manual alarm button and a fire-fighting linkage control module, wherein the fire detector is provided with a camera (4); detecting and partitioning an area needing fire detection to obtain a plurality of detection subareas, wherein each detection subarea is correspondingly provided with one area control extension, each detection subarea is correspondingly provided with a plurality of fire detectors, each detection subarea is correspondingly provided with a plurality of manual alarm buttons, the area control extension is electrically connected with each fire detector and each manual alarm button in the corresponding detection subarea, a camera (4) of each fire detector is used for carrying out video detection on the detection subareas, the fire detectors transmit obtained video pictures to the corresponding area control extensions in real time, and the area control extensions are used for scanning and analyzing the video pictures of the fire detectors to judge whether fire or smoke exists; each zone control extension is respectively and electrically connected with the automatic fire alarm control host, and the fire-fighting linkage control module is controlled by the automatic fire alarm control main body;
the fire detector comprises a front shell (1), a circuit mounting plate (2), a middle shell (3), a rear shell (5) and a base (6);
the detection device is characterized in that a detection chamber (11) is arranged on the front shell (1), a detection port (12) communicated with the detection chamber (11) is formed in the front shell (1), and the circuit mounting plate (2) is arranged in the front shell (1) and is positioned above the detection chamber (11); an indicator light is further arranged on the front shell (1);
a detection circuit board (21) is mounted on the circuit mounting board (2), a fire detection module (22) is arranged on the detection circuit board (21), the fire detection module (22) is arranged in the detection chamber (11), a micro driving motor (23) is mounted on one surface, far away from the detection circuit board (21), of the circuit mounting board (2), the micro driving motor (23) is electrically connected with the detection circuit board (21), and a bevel gear (24) is arranged on an output shaft of the micro driving motor (23); the connecting wire of the indicator light is electrically connected with the detection circuit board (21);
the middle shell (3) is rotatably installed at one end, far away from the detection chamber (11), of the front shell (1), the inner side face of the middle shell (3) is set to be an inclined side face, clamping teeth (31) are arranged on the inclined side face, the inclined side face of the middle shell (3) is matched with the bevel gear (24) in an inclined angle, the clamping teeth (31) of the inclined side face are meshed with the bevel gear (24) in a connected mode, the camera (4) is embedded in the outer side face of the middle shell (3), and the camera (4) is in wireless connection with the detection circuit board (21);
one end, far away from the front shell (1), of the middle shell (3) is rotatably connected with the rear shell (5), a connecting column (51) is arranged on the rear shell (5), an axial hole groove is formed in the connecting column (51), a metal layer is arranged in the axial hole groove, a connecting terminal (52) is arranged on one face, far away from the connecting column (51), of the rear shell (5), a first metal screw penetrates through the connecting terminal (52), the first metal screw penetrates through the rear shell (5) and is locked into the axial hole groove of the connecting column (51), a second metal screw penetrates through the detection circuit board (21) and is electrically connected with the detection circuit board, and the second metal screw penetrates through the circuit mounting board (2) and is locked into the axial hole groove of the connecting column (51);
the base (6) is provided with a threading hole (62) and a wiring terminal (61), the base (6) is connected with the rear shell (5), and the wiring terminal (61) of the base (6) is electrically connected with the connecting terminal (52) of the rear shell (5);
the fire detection module (22) is a photoelectric smoke detection module, and the photoelectric smoke detection module comprises a photoelectric generation device (221) arranged on the detection circuit board (21), a black light blocking fence (222) covered outside the photoelectric generation device (221) and a black filter screen (223) covered outside the black light blocking fence (222); the black light-blocking fence (222) comprises black light-blocking sheets and black films, wherein the black light-blocking sheets are arranged on the black films in an annular array mode, each black light-blocking sheet is provided with a folded corner, and the folded corners between the adjacent black light-blocking sheets are sleeved at intervals;
a smoke-resistant blade (15) is arranged on the outer side surface of the front shell (1) and above the detection port (12); the smoke-resistant blade (15) is a spiral blade spirally wound on the outer side of the outer shell; or the smoke blocking blade (15) is an arc-shaped blade, the arc concave surface of the arc-shaped blade faces the outer shell, one end of the arc-shaped blade on the arc length is connected with the outer shell, and an opening is formed between the other end of the arc length and the outer shell.
2. An automatic fire alarm system according to claim 1, wherein: the regional control extension sets up a three-dimensional scene for the corresponding detection sub-regions, each fire detector in the corresponding detection sub-regions is provided with a corresponding three-dimensional coordinate position, a camera (4) of each fire detector is provided with a corresponding camera shooting range, the regional control extension sets the corresponding video detection region coordinates of the fire detectors according to the coordinate positions and the camera shooting ranges of the fire detectors, and the regional control extension determines a video detection overlapping region according to the video detection regions of the fire detectors; the regional control extension carries out picture splicing on the video pictures of the fire detectors by taking the video pictures in the video detection overlapping region as splicing surfaces, and transmits the video pictures to the automatic fire alarm control host;
the video pictures in the video detection overlapping area are as follows: and the regional control extension respectively analyzes the picture tracks of the video pictures of the fire detectors in the video detection overlapping region, performs overlapping comparison on the picture tracks of the fire detectors in the video detection overlapping region, and fuses the video picture with the highest picture track overlapping degree to serve as the video picture in the video detection overlapping region.
3. A fire automatic alarm system according to claim 1, wherein: the indicating lamp is annular indicating lamp area (13), annular indicating lamp area (13) encircle inlay in the outside of procapsid (1) to be located the top of detecting port (12), the connecting wire in annular indicating lamp area (13) penetrates procapsid (1) and is connected with detection circuit board (21) electricity.
4. A fire automatic alarm system according to claim 1, wherein: the outer side surface of the middle shell (3) is an inclined surface inclined from outside to inside.
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| CN113674423A (en) * | 2021-08-27 | 2021-11-19 | 中德（珠海）人工智能研究院有限公司 | Fire cause determination method, device, server and readable storage medium |
| CN114783135B (en) * | 2022-03-05 | 2024-04-26 | 南昌高新技术产业开发区消防救援大队 | Fire alarm system |
| CN114783137B (en) * | 2022-04-22 | 2023-07-28 | 浙江中辰城市应急服务管理有限公司 | Intelligent smoke and lightning composite detector |
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Inventor after: Jiang Ping Inventor after: Wang Ye Inventor after: Bian Lingyong Inventor after: Qu Bin Inventor after: Tang Yuanrui Inventor before: Zhong Wei Inventor before: Wang Ye Inventor before: Bian Lingyong Inventor before: Qu Bin Inventor before: Tang Yuanrui |