Special flame detector with video recording function

Abstract

The invention relates to the technical field of flame detectors, and discloses a special flame detector with a video recording function, which comprises a top plate, a protective shell arranged below the top plate, and an adjusting assembly arranged at the bottom of the top plate, and the adjusting assembly comprises a positive and negative rotation motor fixedly connected to the bottom of the top plate, the output end of the positive and negative rotation motor is fixedly connected with an output shaft, the outer wall of the bottom of the output shaft is fixedly connected with a driving gear, the side wall of the driving gear is meshed with a driven gear, the inner wall of the driven gear is fixedly connected with a driven shaft, and the outer wall of the top of the driven shaft is rotationally connected with the bottom of the top plate through a bearing; a first rotating plate is fixedly connected to the bottom of the driven shaft, a limiting column is fixedly connected to the top of the side face of the first rotating plate, by arranging the adjusting assembly, rotation can be conveniently generated through the protective shell, the special flame detector can conduct multi-directional real-time monitoring on the interior of a protective area, and fire disasters are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of flame detectors, and particularly to a special flame detector with a video recording function. Background Technique

[0002] A flame detector is an instrument that detects the visible or invisible light radiation that is not present in the atmosphere while generating smoke and heat during the combustion of substances. A flame detector is also known as a photosensitive fire detector. It is a fire detector used to respond to the light characteristics of a fire, that is, to detect the light intensity of the flame combustion and the flicker frequency of the flame.

[0003] Currently, in the protection areas of processes where fires are extremely likely to occur, the monitoring and control means are becoming increasingly rich. In the existing scenarios, in addition to single-infrared or dual-infrared, single-ultraviolet or dual-ultraviolet detectors, false alarms will occur when encountering strong light, electric welding, or lightning during use. There is an urgent need to develop and research a special flame detector that can both record the on-site working conditions safely and identify a fire in milliseconds.

[0004] Since the installation position of the special flame detector in the prior art is always fixed, when monitoring the protected area, it is easy to generate some monitoring blind spots, so that some areas cannot be effectively protected. When a fire occurs in the monitoring blind spot, it cannot be effectively and timely detected, which makes the fire situation more serious, thus affecting the monitoring effect of the flame detector on the fire situation. For this reason, we have proposed a special flame detector with a video recording function. Summary of the Invention

[0005] The purpose of the present invention is to provide a special flame detector with a video recording function, which solves the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solution: A special flame detector with a video recording function, including a top plate, a protective housing disposed below the top plate, and an adjustment assembly disposed at the bottom of the top plate. The adjustment assembly includes a forward and reverse motor fixedly connected to the bottom of the top plate. The output end of the forward and reverse motor is fixedly connected with an output shaft. The outer wall of the bottom of the output shaft is fixedly connected with a driving gear. The side wall of the driving gear meshes with a driven gear. The inner wall of the driven gear is fixedly connected with a driven shaft. The outer wall of the top of the driven shaft is rotationally connected to the bottom of the top plate through a bearing. The bottom of the driven shaft is fixedly connected with a first rotating plate. The top of the side surface of the first rotating plate is fixedly connected with a limiting column. The outer wall of the top of the limiting column is slidably connected with an annular limiting plate. The side wall of the annular limiting plate is fixedly connected with the outer wall of the top plate. The first rotating plate is located above the protective housing. By setting the adjustment assembly, during the process of real-time monitoring of the protected area, in order to prevent the occurrence of a fire, it is necessary to conduct real-time monitoring through a special flame detector. In order to improve the monitoring range of the special flame detector during the monitoring process, it is necessary to rotate the protective housing, thereby improving the monitoring range of the detector. At this time, the operator turns on the forward and reverse motor to cause the output shaft to rotate. During the rotation of the output shaft, the driving gear will be driven to rotate. During the rotation of the driving gear, it will mesh with the driven gear to cause the driven shaft to rotate. During the rotation of the driven shaft, the first rotating plate will be driven to rotate. During the rotation of the first rotating plate, the limiting column will slide inside the annular limiting plate, thereby improving the stability of the first rotating plate during rotation. During the rotation of the first rotating plate, the detector inside the lower protective housing will be driven to rotate, enabling the detector to conduct a circumferential rotation monitoring of the protected area, so that when a fire occurs inside the protected area, it can be detected and processed in a timely manner.

[0007] Preferably, the adjusting assembly further includes a vertical plate fixedly connected to the bottom of the side surface of the first rotating plate. A rotating rod is rotatably connected to the middle side wall of the vertical plate through a bearing. A connecting block is fixedly connected to the outer wall of the middle part of the rotating rod. The bottom of the connecting block is fixedly connected to the top of the protective housing. A limiting groove is formed in the side wall of the vertical plate. A limiting block is slidably connected to the inner wall of the limiting groove. A displacement rod is fixedly connected to the side wall of the limiting block. The other end of the displacement rod is fixedly connected to a rack. The bottom of the rack meshes with an incomplete gear. The inner wall of the incomplete gear is fixedly connected to the outer wall of the rotating rod. An L-shaped plate is fixedly connected to the outer wall of the vertical plate. An electric push rod is fixedly connected to the side wall of the L-shaped plate. The output end of the electric push rod is fixedly connected to the outer wall of the rack. When the detector is monitoring, in order to accurately monitor the interior of the protected area, it is necessary to adjust the tilt angle of the detector. At this time, the operator turns on the electric push rod to cause the electric push rod to push the rack to move. The rack slides and moves inside the limiting groove through the displacement rod and the limiting block. During the movement of the rack, its bottom will mesh with the incomplete gear, causing the rotating rod to rotate. During the rotation of the rotating rod, it will drive the connecting block to rotate. During the rotation of the connecting block, it will drive the protective housing to tilt, thereby realizing the adjustment of the tilt angle of the detector, facilitating the accurate monitoring of the interior of the protected area by the tilted detector.

[0008] Preferably, a vertical block is fixedly connected to the bottom of the side surface of the first rotating plate. A cross bar is fixedly connected to the side wall of the vertical block. A slider is slidably connected to the outer wall of the cross bar. A spring is fixedly connected to the side wall of the slider. The other end of the spring is fixedly connected to the side wall of the vertical block. The bottom of the slider is movably connected to the second rotating plate through a hinge. The other end of the second rotating plate is movably connected to the top of the protective housing through a hinge. After the protective housing tilts, its top will rotate and drive the second rotating plate to rotate. During the rotation of the second rotating plate, it will pull the slider to slide along the outer wall of the cross bar and stretch the spring. During this process, the protective housing can be pulled by the rotation of the second rotating plate, thereby realizing the limitation of the protective housing during rotation, enabling the detector to have a stable tilting rotation.

[0009] Preferably, a detection component is provided below the connection block. The detection component includes a front end cover fixedly connected to the outer wall of one side of the protective housing. A viewing window is fixedly connected to the inner wall of the front end cover. A detection and acquisition module is fixedly connected to the inner wall of the protective housing. A rear end cover is provided on the inner wall of the other side of the protective housing. A sealing pipe is fixedly connected to the bottom of the other side of the protective housing. A locking nut is threadedly connected to the inner wall of the sealing pipe. By setting the detection component, the flame detection adopts the red-ultraviolet dual-spectrum detection technology, and effectively captures the characteristics of various fire sources through an excellent mathematical model. In the state without fire, the image detector realizes the function of a conventional video monitor and uploads the protected work station to the central control in real time. For video recording, a low-latency 200W infrared camera is selected, with a maximum resolution of up to 2 million pixels, and 120fps real-time images can be output at this resolution. *Versions V5.8.3 build231123 and later support the low-latency mode, and the latency can meet the requirement that the control from data acquisition to network output is within 40ms. Through the converter, it can be connected to the central control background to save the on-site picture in real time. When a fire occurs in the protected area, the red-ultraviolet detector sends an instruction to the camera, and the camera starts to record at high speed. The events 300ms before the instruction and the events 300ms after the instruction (the specific pre-recording time can be configured) are recorded and transmitted to the data storage of the image detector for subsequent accident analysis to provide key image data. The camera supports sd card expansion, and the sd card has dual-backup video recording. The special flame detector mainly consists of related components such as an ultraviolet acquisition tube, an infrared acquisition tube, a video collector, a central processor, a power supply module, a storage module, and a communication module. In nature, it is divided into the ultraviolet part and the infrared part according to different wavelength ranges. The burning object corresponds to the spectra of different wavelengths and emits different degrees of radiation. The heating object can radiate infrared rays, and generally low-temperature objects usually do not radiate ultraviolet rays.Only flames radiate both ultraviolet and infrared rays. If there are no objects that externally radiate red and ultraviolet rays, special flame detectors will not respond. Only the red-ultraviolet composite type can reduce the false alarm rate of the detector and thus improve its stability. To record the operating conditions of the protected area and verify whether there are false alarms in the detector, a video collector is added on the basis of the red-ultraviolet detection technology to enhance the detector's functionality in specific scenarios, achieving double optimization in enterprise on-site management and economic investment. Through experiments, it is verified that near the 4.3μm position in the infrared light wavelength, the peak of the flame spectrum is the emission spectrum of the CO2 atomic group. The ultraviolet spectrum of the flame is still significantly distributed below 0.29μm, and there is little ultraviolet interference from sunlight in this range. Therefore, the detector selects the 0.185 - 0.260μm band as the ultraviolet monitoring area. The combination of red and ultraviolet uses a superior mathematical model to compare the energies of infrared and ultraviolet rays to determine the accuracy of fire alarm signals. The video collector continuously records the protected area in real time dynamically. It mainly consists of three parts: a video decoder and compression encoder, an ARM processor, and an electronic disk. When the system is working, the video signal captured by the camera is first decoded and A / D converted through the video decoder SAA7113H to output an 8-bit 4:2:2 format YCbCr digital video signal. This digitized video signal is sent to the SZ1510 compression encoding chip for compression to generate an MPEG-1 data stream. Then, the ARM processor stores the compressed data into the storage medium - the hard disk through the IDE interface. It can also be connected to the central control room to view the on-site environment record through the video at any time. Especially when a fire alarm signal appears, the system automatically pops up a window to confirm the existence of the fire, and at the same time provides effective image data for analyzing the cause of the fire on the spot.

[0010] Preferably, a cooling component is provided on the side wall of the first rotating plate. The cooling component includes a support rod movably connected to the outer wall of the first rotating plate through a hinge. The other end of the support rod is movably connected to a moving block through a hinge. A limiting frame is slidably connected to the top outer wall of the moving block. The top of the limiting frame is fixedly connected to the bottom of the top plate. A moving column is fixedly connected to the bottom side wall of the moving block. The other end of the moving column is fixedly connected to a rubber block. The outer wall of the rubber block is slidably connected to a horizontal pipe. A fixing plate is fixedly connected to the middle outer wall of the horizontal pipe. The top side wall of the fixing plate is fixedly connected to the outer wall of the top plate. The other end of the horizontal pipe is communicated with a connecting pipe. The other end of the connecting pipe is communicated with an exhaust head. The top of the exhaust head is fixedly connected to an L-shaped bracket. The top side wall of the L-shaped bracket is fixedly connected to the outer wall of the top plate. By providing the cooling component, when the special flame detector monitors for a long time, more heat is likely to be generated on its outer wall. However, during the rotation of the first rotating plate, it will drive the support rod to rotate. During the rotation of the support rod, it will push the moving block to slide inside the limiting frame, causing the moving block to push the moving column to move. The moving column will push the rubber block to be extruded inside the horizontal pipe, creating negative pressure inside the horizontal pipe, so that the air inside the horizontal pipe is extruded by the rubber block into the connecting pipe and discharged from the exhaust head, enabling the discharged gas to cool the special flame detector and improving the working efficiency of the special flame detector.

[0011] Preferably, two support frames are fixedly connected to the bottom of the top plate. The two support frames are symmetrically distributed along the central plane of the top plate. By providing two support frames at the bottom of the top plate, it is convenient to stably support the top plate.

[0012] Preferably, the inner wall of the limiting groove is adapted to the outer wall of one end of the limiting block. The other end of the limiting block is fixedly connected to the side wall of the displacement rod.

[0013] Preferably, there are two annular limiting plates. The two annular limiting plates are symmetrically distributed along the central plane of the top plate.

[0014] The present invention provides a special flame detector with a video recording function. The special flame detector with a video recording function has the following beneficial effects:

[0015] (1) The special flame detector with video recording function, by setting the adjustment component, during the process of real-time monitoring of the protected area, in order to prevent the occurrence of fire, real-time monitoring is required through the special flame detector. In order to improve the monitoring range of the special flame detector during the monitoring process, it is necessary to rotate the protective housing, thereby increasing the monitoring range of the detector. At this time, the operator turns on the forward and reverse motor to cause the output shaft to rotate. During the rotation of the output shaft, the driving gear will be driven to rotate. During the rotation of the driving gear, it will mesh with the driven gear, causing the driven shaft to rotate. During the rotation of the driven shaft, the first rotating plate will be driven to rotate. During the rotation of the first rotating plate, it will slide inside the annular limiting plate through the limiting column, thereby improving the stability of the first rotating plate during rotation. During the rotation of the first rotating plate, the detector inside the lower protective housing will be driven to rotate, enabling the detector to perform circumferential rotation monitoring of the protected area, so that when a fire occurs inside the protected area, it can be discovered and processed in a timely manner;

[0016] (2) The special flame detector with video recording function, by setting the detection component, the special flame detector mainly consists of relevant components such as an ultraviolet acquisition tube, an infrared acquisition tube, a video collector, a central processor, a power supply module, a storage module, and a communication module. In nature, it is divided into the ultraviolet part and the infrared part according to different wavelength ranges. The burning object corresponds to the spectra of different wavelengths and emits different degrees of radiation. The heating object can radiate infrared rays. Generally, low-temperature objects usually do not radiate ultraviolet rays. Only flames radiate both ultraviolet rays and infrared rays. If there are no objects that radiate red and ultraviolet rays externally, the special flame detector will not respond. Only the red-ultraviolet composite type can reduce the false alarm phenomenon of the detector and thus improve the stability of the detector. In order to record the working conditions of the protected area and verify whether there is a false alarm phenomenon of the detector, a video collector is added on the basis of the red-ultraviolet detection technology to improve the use function of the detector in specific occasions, achieving double optimization for enterprise on-site management and economic investment;

[0017] (3) The special flame detector with video recording function, by setting the cooling component, when the special flame detector is monitoring for a long time, its outer wall is likely to generate a relatively high temperature. However, during the rotation of the first rotating plate, the support rod will be driven to rotate. During the rotation of the support rod, the moving block will be pushed to slide inside the limiting frame, causing the moving block to push the moving column to move. The moving column will push the rubber block to be squeezed inside the horizontal pipe, creating a negative pressure inside the horizontal pipe, so that the air inside the horizontal pipe is squeezed by the rubber block into the connecting pipe and discharged from the exhaust head through the connecting pipe, enabling the discharged gas to cool down the special flame detector and improving the working efficiency of the special flame detector. Brief Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is a partial cross-sectional view of the present invention;

[0020] Figure 3 is a structural schematic diagram of the adjustment component in the present invention;

[0021] Figure 4 is a side structural schematic diagram of the adjustment component in the present invention;

[0022] Figure 5 is Figure 4 a partial enlarged view of part A in;

[0023] Figure 6 is a structural schematic diagram of the detection component in the present invention;

[0024] Figure 7 is a partial cross-sectional view of the detection component in the present invention;

[0025] Figure 8 is a structural schematic diagram of the cooling component in the present invention;

[0026] Figure 9 is a cross-sectional view of the partial structure of the cooling component in the present invention;

[0027] Figure 10 is a working principle diagram of the present invention;

[0028] Figure 11 is a schematic diagram of the video screen acquisition principle in the present invention;

[0029] Figure 12 is a schematic diagram of the infrared phototube in the present invention;

[0030] Figure 13 is a schematic diagram of the ultraviolet phototube in the present invention;

[0031] Figure 14 is an external view of the detector in the present invention.

[0032] In the figure: 1. Top plate; 2. Support frame; 31. Adjusting component; 311. Forward and reverse motor; 312. Output shaft; 313. Driving gear; 314. Driven gear; 315. Driven shaft; 316. First rotating plate; 317. Position-limiting column; 318. Annular position-limiting plate; 319. Vertical plate; 3110. Rotating rod; 3111. Connecting block; 3112. Position-limiting groove; 3113. Position-limiting block; 3114. Displacement rod; 3115. Rack; 3116. Incomplete gear; 3117. L-shaped plate; 3118. Electric push rod; 3119. Vertical block; 3120. Cross bar; 3121. Slide block; 3122. Spring; 3123. Second rotating plate; 32. Detection component; 321. Protective housing; 322. Front end cover; 323. Window; 324. Detection and acquisition module; 325. Rear end cover; 326. Sealing pipe; 327. Locking nut; 33. Cooling component; 331. Support rod; 332. Moving block; 333. Position-limiting frame; 334. Moving column; 335. Rubber block; 336. Horizontal pipe; 337. Fixed plate; 338. Connecting pipe; 339. Exhaust head; 3310. L-shaped bracket. Detailed implementation mode

[0033] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific implementation mode of the present invention will now be described with reference to the accompanying drawings.

[0034] A preferred embodiment of a special flame detector with a video recording function provided by the present invention is as follows Figures 1 to 14As shown in the figure: A special flame detector with a video recording function, including a top plate 1, a protective housing 321 arranged below the top plate 1, and an adjustment component 31 arranged at the bottom of the top plate 1. The adjustment component 31 includes a forward and reverse motor 311 fixedly connected to the bottom of the top plate 1. The output end of the forward and reverse motor 311 is fixedly connected with an output shaft 312. The outer wall of the bottom of the output shaft 312 is fixedly connected with a driving gear 313. The side wall of the driving gear 313 is meshed with a driven gear 314. The inner wall of the driven gear 314 is fixedly connected with a driven shaft 315. The outer wall of the top of the driven shaft 315 is rotationally connected to the bottom of the top plate 1 through a bearing. The bottom of the driven shaft 315 is fixedly connected with a first rotating plate 316. The top of the side surface of the first rotating plate 316 is fixedly connected with a limiting column 317. The outer wall of the top of the limiting column 317 is slidably connected with an annular limiting plate 318. The side wall of the annular limiting plate 318 is fixedly connected with the outer wall of the top plate 1. The first rotating plate 316 is located above the protective housing 321. By setting the adjustment component 31, during the process of real-time monitoring of the protected area, in order to prevent the occurrence of a fire, real-time monitoring needs to be carried out through the special flame detector. In order to improve the monitoring range of the special flame detector during the monitoring process, it is necessary to rotate the protective housing 321, thereby improving the monitoring range of the detector. At this time, the operator turns on the forward and reverse motor 311 to cause the output shaft 312 to rotate. During the rotation of the output shaft 312, the driving gear 313 will be driven to rotate. During the rotation of the driving gear 313, it will mesh with the driven gear 314 to cause the driven shaft 315 to rotate. During the rotation of the driven shaft 315, the first rotating plate 316 will be driven to rotate. During the rotation of the first rotating plate 316, the limiting column 317 will slide inside the annular limiting plate 318, thereby improving the stability of the first rotating plate 316 during rotation. During the rotation of the first rotating plate 316, the detector inside the lower protective housing 321 will be driven to rotate, enabling the detector to perform circumferential rotation monitoring on the protected area, so that when a fire occurs inside the protected area, it can be detected and processed in a timely manner.

[0035] The adjustment assembly 31 further includes a vertical plate 319 fixedly connected to the bottom of the side surface of the first rotating plate 316. A rotating rod 3110 is rotatably connected to the middle side wall of the vertical plate 319 through a bearing. A connecting block 3111 is fixedly connected to the outer wall of the middle part of the rotating rod 3110. The bottom of the connecting block 3111 is fixedly connected to the top of the protective housing 321. A limiting groove 3112 is formed in the side wall of the vertical plate 319. A limiting block 3113 is slidably connected to the inner wall of the limiting groove 3112. A displacement rod 3114 is fixedly connected to the side wall of the limiting block 3113. The other end of the displacement rod 3114 is fixedly connected to a rack 3115. An incomplete gear 3116 is engaged with the bottom of the rack 3115. The inner wall of the incomplete gear 3116 is fixedly connected to the outer wall of the rotating rod 3110. An L-shaped plate 3117 is fixedly connected to the outer wall of the vertical plate 319. An electric push rod 3118 is fixedly connected to the side wall of the L-shaped plate 3117. The output end of the electric push rod 3118 is fixedly connected to the outer wall of the rack 3115. When the detector is monitoring, the operator turns on the electric push rod 3118 to cause the electric push rod 3118 to push the rack 3115 to move. The rack 3115 slides inside the limiting groove 3112 through the displacement rod 3114 and the limiting block 3113 and then moves. During the movement of the rack 3115, its bottom will engage with the incomplete gear 3116, causing the rotating rod 3110 to rotate. During the rotation of the rotating rod 3110, it will drive the connecting block 3111 to rotate. During the rotation of the connecting block 3111, it will drive the protective housing 321 to tilt, so as to realize the adjustment of the tilt angle of the detector, facilitating the accurate monitoring of the protected area through the tilted detector.

[0036] A vertical block 3119 is fixedly connected to the bottom of the side surface of the first rotating plate 316. A cross bar 3120 is fixedly connected to the side wall of the vertical block 3119. A slider 3121 is slidably connected to the outer wall of the cross bar 3120. A spring 3122 is fixedly connected to the side wall of the slider 3121. The other end of the spring 3122 is fixedly connected to the side wall of the vertical block 3119. The bottom of the slider 3121 is movably connected to the other end of the second rotating plate 3123 through a hinge. The other end of the second rotating plate 3123 is movably connected to the top of the protective housing 321 through a hinge. After the protective housing 321 tilts, its top will rotate and drive the second rotating plate 3123 to rotate. During the rotation of the second rotating plate 3123, it will pull the slider 3121 to slide along the outer wall of the cross bar 3120 and pull the spring 3122 to extend. During this process, the protective housing 321 can be pulled by the rotation of the second rotating plate 3123, so as to realize the limiting of the protective housing 321 during the rotation process, enabling the detector to have a stable tilting rotation.

[0037] A preferred embodiment of the special flame detector with a video recording function provided by the present invention is as followsFigures 1 to 14 As shown in the figure: A detection component 32 is arranged below the connection block 3111. The detection component 32 includes a front end cover 322 fixedly connected to the outer wall of one side of the protection housing 321. A viewing window 323 is fixedly connected to the inner wall of the front end cover 322. A detection and acquisition module 324 is fixedly connected to the inner wall of the protection housing 321. A rear end cover 325 is on the inner wall of the other side of the protection housing 321. A sealing tube 326 is fixedly connected to the bottom of the other side of the protection housing 321. A locking nut 327 is threadedly connected to the inner wall of the sealing tube 326. By setting the detection component 32, the flame detection adopts the red-ultraviolet dual-spectrum detection technology, and effectively captures the characteristics of various fire sources through a superior mathematical model. In the state without a fire, the image detector realizes the function of a conventional video monitor and uploads the protected work station to the central control in real time. For video recording, a low-latency 200W infrared camera is selected, with a maximum resolution of up to 2 million pixels, and 120fps real-time images can be output at this resolution. *Versions V5.8.3 build231123 and later support the low-latency mode, and the latency can meet the requirement of controlling the time from data acquisition to network output within 40ms. Through the converter, it can be connected to the central control background to save the on-site picture in real time. When a fire occurs in the protected area, the red-ultraviolet detector sends an instruction to the camera, and the camera starts high-speed recording, recording the events 300ms before the instruction and the events 300ms after the instruction (the specific pre-recording time is configurable) and transmitting the data to the data storage device close to the image detector for subsequent accident analysis to provide key video materials. The camera supports SD card expansion, and the SD card provides dual-backup video recording;

[0038] The special flame detector is mainly composed of relevant components such as an ultraviolet acquisition tube, an infrared acquisition tube, a video collector, a central processor, a power supply module, a storage module, and a communication module. In nature, it is divided into the ultraviolet part and the infrared part according to different wavelength ranges. The burning object corresponds to the spectra of different wavelengths and emits different degrees of radiation. The heating object can radiate infrared rays. Generally, low-temperature objects usually do not radiate ultraviolet rays. Only the flame radiates both ultraviolet rays and infrared rays. If there is no object radiating red and ultraviolet rays externally, the special flame detector has no response. Only the red-ultraviolet composite type can reduce the false alarm phenomenon of the detector and thus improve the stability of the detector. In order to record the working conditions of the protected area and verify whether there is a false alarm phenomenon in the detector, a video collector is added on the basis of the red-ultraviolet detection technology to improve the use function of the detector in specific occasions, achieving double optimization for enterprise on-site management and economic investment;

[0039] Through experiments, it is verified that near the 4.3 μm position in the infrared light wavelength, the peak of the flame spectrum is the emission spectrum of the CO2 molecular group. There is still relatively obvious ultraviolet light in the flame's ultraviolet spectrum below 0.29 μm, and there is little interference from sunlight ultraviolet rays in this range. Therefore, the detector selects the band of 0.185 - 0.260 μm as the ultraviolet monitoring area. The combination of red and ultraviolet uses a superior mathematical model to compare the energies of infrared and ultraviolet rays to judge the accuracy of fire alarm signals. The video collector continuously records the protected area in real-time dynamically, mainly consisting of three parts: a video decoder and compression encoder, an ARM processor, and an electronic disk. When the system works, first, the video signal captured by the camera is decoded and A / D converted through the video decoder SAA7113H to output a YCbCr digital video signal in 8-bit 4:2:2 format. This digital video signal is sent to the SZ1510 compression encoding chip for compression to generate an MPEG-1 data stream. Then, the ARM processor stores the compressed data into the storage medium - hard disk through the IDE interface. It can also be connected to the central control room to view the on-site environment record through the video at any time. Especially when a fire alarm signal appears, the system automatically pops up a window to confirm the existence of the fire alarm, and at the same time provides effective image data for the analysis of the cause of the fire on-site.

[0040] A preferred embodiment of the special flame detector with a video recording function provided by the present invention is as Figures 1 to 14As shown in the figure: A cooling component 33 is provided on the side wall of the first rotating plate 316. The cooling component 33 includes a support rod 331 movably connected to the outer wall of the first rotating plate 316 by a hinge. The other end of the support rod 331 is movably connected to a moving block 332 by a hinge. The top outer wall of the moving block 332 is slidably connected to a limiting frame 333. The top of the limiting frame 333 is fixedly connected to the bottom of the top plate 1. The bottom side wall of the moving block 332 is fixedly connected to a moving column 334. The other end of the moving column 334 is fixedly connected to a rubber block 335. The outer wall of the rubber block 335 is slidably connected to a horizontal pipe 336. The middle outer wall of the horizontal pipe 336 is fixedly connected to a fixing plate 337. The top side wall of the fixing plate 337 is fixedly connected to the outer wall of the top plate 1. The other end of the horizontal pipe 336 is communicated with a connecting pipe 338. The other end of the connecting pipe 338 is communicated with an exhaust head 339. The top of the exhaust head 339 is fixedly connected to an L-shaped bracket 3310. The top side wall of the L-shaped bracket 3310 is fixedly connected to the outer wall of the top plate 1. By providing the cooling component 33, when the special flame detector is monitoring for a long time, more temperature is likely to be generated on its outer wall. However, during the rotation of the first rotating plate 316, it will drive the support rod 331 to rotate. During the rotation of the support rod 331, it will push the moving block 332 to slide inside the limiting frame 333, so that the moving block 332 pushes the moving column 334 to move. The moving column 334 will push the rubber block 335 to be extruded inside the horizontal pipe 336, generating negative pressure inside the horizontal pipe 336, so that the air inside the horizontal pipe 336 is extruded by the rubber block 335 into the connecting pipe 338 and discharged from the exhaust head 339 through the connecting pipe 338, enabling the discharged gas to cool the special flame detector and improving the working efficiency of the special flame detector.

[0041] Furthermore, two support frames 2 are fixedly connected to the bottom of the top plate 1. The number of the two support frames 2 is two, and the two support frames 2 are symmetrically distributed along the central plane of the top plate 1. By providing two support frames 2 at the bottom of the top plate 1, it is convenient to stably support the top plate 1.

[0042] Furthermore, the inner wall of the limiting groove 3112 is adapted to the outer wall of one end of the limiting block 3113, and the other end of the limiting block 3113 is fixedly connected to the side wall of the displacement rod 3114.

[0043] In addition, the number of the annular limiting plates 318 is two, and the two annular limiting plates 318 are symmetrically distributed along the central plane of the top plate 1.

[0044] Working principle: During the process of real-time monitoring of the protected area, in order to prevent fires, real-time monitoring is required through special flame detectors. In order to improve the monitoring range of the special flame detectors during the monitoring process, the protective housing 321 needs to be rotated, thereby increasing the monitoring range of the detector. At this time, the operator turns on the forward and reverse motor 311, causing the output shaft 312 to rotate. During the rotation of the output shaft 312, the driving gear 313 will be driven to rotate. During the rotation of the driving gear 313, it will mesh with the driven gear 314, causing the driven shaft 315 to rotate. During the rotation of the driven shaft 315, the first rotating plate 316 will be driven to rotate. During the rotation of the first rotating plate 316, it will slide inside the annular limiting plate 318 through the limiting post 317, thereby improving the stability of the first rotating plate 316 during rotation. During the rotation of the first rotating plate 316, the detector inside the lower protective housing 321 will be driven to rotate, enabling the detector to perform circumferential rotation monitoring of the protected area, so that when a fire occurs inside the protected area, it can be detected and processed in a timely manner;

[0045] During the monitoring process of the detector, in order to accurately monitor the interior of the protected area, the tilt angle of the detector needs to be adjusted. At this time, the operator turns on the electric push rod 3118, causing the electric push rod 3118 to push the rack 3115 to move. The rack 3115 slides and moves inside the limiting groove 3112 through the displacement rod 3114 and the limiting block 3113. During the movement of the rack 3115, its bottom will mesh with the incomplete gear 3116, causing the rotating rod 3110 to rotate. During the rotation of the rotating rod 3110, the connecting block 3111 will be driven to rotate. During the rotation of the connecting block 3111, the protective housing 321 will be tilted, thereby realizing the adjustment of the tilt angle of the detector, facilitating the accurate monitoring of the interior of the protected area by the tilted detector;

[0046] After the protective housing 321 is tilted, its top will rotate and drive the second rotating plate 3123 to rotate. During the rotation of the second rotating plate 3123, the slider 3121 will be pulled to slide along the outer wall of the cross bar 3120, and the spring 3122 will be pulled to extend. During this process, the protective housing 321 can be pulled by the rotation of the second rotating plate 3123, thereby realizing the limitation of the protective housing 321 during rotation, enabling the detector to perform stable tilting rotation;

[0047] When the special flame detector is in the long-term monitoring process, more temperature is likely to be generated on its outer wall. However, during the rotation of the first rotating plate 316, it will drive the support rod 331 to rotate. During the rotation of the support rod 331, it will push the moving block 332 to slide inside the limit frame 333, so that the moving block 332 pushes the moving column 334 to move. The moving column 334 will push the rubber block 335 to be extruded inside the horizontal pipe 336, generating negative pressure inside the horizontal pipe 336, so that the air inside the horizontal pipe 336 is extruded by the rubber block 335 into the inside of the connecting pipe 338 and discharged from the exhaust head 339 through the connecting pipe 338, enabling the discharged gas to cool down the special flame detector and improve the working efficiency of the special flame detector;

[0048] Flame detection adopts the red-ultraviolet dual-spectrum detection technology, which effectively captures the characteristics of various fire sources through a superior mathematical model. In the state of no fire, the image detector realizes the function of a conventional video monitor and uploads the protected workstations to the central control in real time. For video recording, a low-latency 200W infrared camera is selected, with a maximum resolution of up to 2 million pixels, and 120fps real-time images can be output at this resolution. *Versions V5.8.3 build231123 and later support the low-latency mode, and the latency can meet the requirement of controlling the time from data acquisition to network output within 40ms. Through the converter, it can be connected to the central control background to save the on-site images in real time. When a fire occurs in the protected area, the red-ultraviolet detector sends a command to the camera, and the camera starts high-speed recording. The events 300ms before the command and the events 300ms after the command (the specific pre-recording time can be configured) are recorded and the data is transmitted to the data storage near the image detector for subsequent accident analysis to provide key video materials. The camera supports SD card expansion, and the SD card provides dual-backup video recording. The special flame detector mainly consists of relevant components such as an ultraviolet acquisition tube, an infrared acquisition tube, a video collector, a central processor, a power supply module, a storage module, and a communication module. In nature, it is divided into the ultraviolet part and the infrared part according to different wavelength ranges. The burning object corresponds to the spectra of different wavelengths and emits radiation of different intensities. The heating object can radiate infrared rays, and generally low-temperature objects usually do not radiate ultraviolet rays. Only the flame radiates both ultraviolet rays and infrared rays. If there are no external objects radiating red and ultraviolet rays, the special flame detector has no response. Only the red-ultraviolet composite type can reduce the false alarm phenomenon of the detector and thus improve the stability of the detector. In order to record the working conditions of the protected area and verify whether there is a false alarm phenomenon in the detector, a video collector is added on the basis of the red-ultraviolet detection technology to improve the use function of the detector in specific occasions, achieving double optimization for enterprise on-site management and economic investment. Through experiments, it is verified that near the position of 4.3μm in the infrared light wavelength, the peak of the flame spectrum is the emission spectrum of the CO2 atomic group. The ultraviolet spectrum of the flame is distributed below 0.29μm, and there is still relatively obvious ultraviolet light, and there is little interference from the ultraviolet rays of sunlight in this interval. Therefore, the detector selects 0.185 - 0.The 260μm band is used as the ultraviolet monitoring area. The combination of red and ultraviolet uses a superior mathematical model to compare the energies of infrared and ultraviolet rays to judge the accuracy rate of fire alarm signals. The video collector continuously and dynamically records the protected area in real time. It mainly consists of three parts: a video decoding and compression encoder, an ARM processor, and an electronic disk. When the system works, first, the video signal captured by the camera is decoded and A / D converted through the video decoder SAA7113H to output a YCbCr digital video signal in 8-bit 4:2:2 format. This digitized video signal is sent to the SZ1510 compression encoding chip for compression to generate an MPEG-1 data stream. Then, the ARM processor stores the compressed data into the storage medium - the hard disk through the IDE interface. It can also be connected to the central control room to view the on-site environmental records through the video at any time. Especially when a fire alarm signal appears, the system automatically pops up a window to confirm the existence of the fire alarm, and at the same time provides effective video materials for analyzing the cause of the fire on the spot.

[0049] The above description is only a schematic specific implementation manner of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above overall application. Each technical feature described in the specification of the present invention can be selected and used alone according to actual needs or multiple features can be combined for use. Therefore, the present invention should logically cover other combinations and specific applications related to this case.

Claims

1. A special flame detector with a video recording function, comprising a top plate (1), a protective housing (321) arranged below the top plate (1), and an adjustment assembly (31) arranged at the bottom of the top plate (1), characterized in that: The adjustment assembly (31) comprises a forward and reverse motor (311) fixedly connected to the bottom of the top plate (1); an output end of the forward and reverse motor (311) is fixedly connected to an output shaft (312); a driving gear (313) is fixedly connected to the bottom outer wall of the output shaft (312); a driven gear (314) is meshed with the side wall of the driving gear (313); a driven shaft (315) is fixedly connected to the inner wall of the driven gear (314); and a top outer wall of the driven shaft (315) is fixedly connected to the output shaft (312). The wall is rotatably connected to the bottom of the top plate (1) through a bearing, the bottom of the driven shaft (315) is fixedly connected to a first rotating plate (316), the top of the side of the first rotating plate (316) is fixedly connected to a limiting column (317), the top outer wall of the limiting column (317) is slidably connected to an annular limiting plate (318), the side wall of the annular limiting plate (318) is fixedly connected to the outer wall of the top plate (1), and the first rotating plate (316) is located above the protective shell (321).

2. A special flame detector with video recording function according to claim 1, characterized in that: The adjustment assembly (31) further comprises a vertical plate (319) fixedly connected to the bottom of the side of the first rotating plate (316); a middle side wall of the vertical plate (319) is rotatably connected to a rotating rod (3110) via a bearing; a middle outer wall of the rotating rod (3110) is fixedly connected to a connecting block (3111); the bottom of the connecting block (3111) is fixedly connected to the top of the protective shell (321); a limiting groove (3112) is provided on the side wall of the vertical plate (319); an inner wall of the limiting groove (3112) is slidably connected to a limiting block (3113); and the limiting block (3113) is fixedly connected to the inner wall of the limiting groove (3112). ) is fixedly connected to the side wall of the vertical plate (319), the other end of the displacement rod (3114) is fixedly connected to a rack (3115), the bottom of the rack (3115) is meshed with an incomplete gear (3116), the inner wall of the incomplete gear (3116) is fixedly connected to the outer wall of the rotating rod (3110), the outer wall of the vertical plate (319) is fixedly connected to an L-shaped plate (3117), the side wall of the L-shaped plate (3117) is fixedly connected to an electric push rod (3118), and the output end of the electric push rod (3118) is fixedly connected to the outer wall of the rack (3115).

3. The special flame detector with video recording function according to claim 1, characterized in that: The bottom of the side of the first rotating plate (316) is fixedly connected to a vertical block (3119), the side wall of the vertical block (3119) is fixedly connected to a cross bar (3120), the outer wall of the cross bar (3120) is slidably connected to a slider (3121), the side wall of the slider (3121) is fixedly connected to a spring (3122), the other end of the spring (3122) is fixedly connected to the side wall of the vertical block (3119), the bottom of the slider (3121) is movably connected to a second rotating plate (3123) through a hinge, and the other end of the second rotating plate (3123) is movably connected to the top of the protective shell (321) through a hinge.

4. The special flame detector with video recording function according to claim 2, characterized in that: A detection assembly (32) is arranged below the connection block (3111), and the detection assembly (32) comprises a front end cover (322) fixedly connected to the outer wall of one side of the protective shell (321), a window (323) fixedly connected to the inner wall of the front end cover (322), a detection collection module (324) fixedly connected to the inner wall of the protective shell (321), a rear end cover (325) on the inner wall of the other side of the protective shell (321), a sealing tube (326) fixedly connected to the bottom of the other side of the protective shell (321), and a locking nut (327) threadedly connected to the inner wall of the sealing tube (326).

5. The special flame detector with video recording function according to claim 1, characterized in that: The side wall of the first rotating plate (316) is provided with a cooling component (33), and the cooling component (33) includes a support rod (331) movably connected to the outer wall of the first rotating plate (316) through a hinge, and the other end of the support rod (331) is movably connected to a moving block (332) through a hinge, and the top outer wall of the moving block (332) is slidably connected to a limit frame (333), and the top of the limit frame (333) is fixedly connected to the bottom of the top plate (1), and the bottom side wall of the moving block (332) is fixedly connected to a moving column (334), and the other end of the moving column (334) is fixedly connected to A rubber block (335), the outer wall of the rubber block (335) is slidably connected to a transverse tube (336), the middle outer wall of the transverse tube (336) is fixedly connected to a fixing plate (337), the top side wall of the fixing plate (337) is fixedly connected to the outer wall of the top plate (1), the other end of the transverse tube (336) is connected to a connecting tube (338), the other end of the connecting tube (338) is connected to an exhaust head (339), the top of the exhaust head (339) is fixedly connected to an L-shaped bracket (3310), and the top side wall of the L-shaped bracket (3310) is fixedly connected to the outer wall of the top plate (1).

6. The special flame detector with video recording function according to claim 1, characterized in that: A support frame (2) is fixedly connected to the bottom of the top plate (1), and there are two groups of the support frames (2). The two groups of the support frames (2) are symmetrically distributed along the center plane of the top plate (1).

7. The special flame detector with video recording function according to claim 2, characterized in that: The inner wall of the limiting groove (3112) is matched with the outer wall of one end of the limiting block (3113), and the other end of the limiting block (3113) is fixedly connected to the side wall of the displacement rod (3114).

8. The special flame detector with video recording function according to claim 1, characterized in that: There are two annular limit plates (318), and the two annular limit plates (318) are symmetrically distributed along the central plane of the top plate (1).

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