CN216697466U - Fire positioning alarm device based on temperature measurement optical fiber - Google Patents
Fire positioning alarm device based on temperature measurement optical fiber Download PDFInfo
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- CN216697466U CN216697466U CN202220104290.4U CN202220104290U CN216697466U CN 216697466 U CN216697466 U CN 216697466U CN 202220104290 U CN202220104290 U CN 202220104290U CN 216697466 U CN216697466 U CN 216697466U
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Abstract
The utility model discloses a fire positioning alarm device based on temperature measuring optical fibers, relates to the field of fire positioning alarm, and solves the problem that the existing fire positioning alarm device is easily influenced by dust in a closed environment so as to generate false alarm, wherein the technical scheme is as follows: the utility model provides a fire location alarm device based on temperature measurement optic fibre, its characterized in that, including optic fibre, optic fibre temperature measurement changer, supervisory equipment and the host computer that is used for measuring the temperature, optic fibre with the fiber communication channel of optic fibre temperature measurement changer connects, the wired transmission interface of optic fibre temperature measurement changer is used for connecting the host computer, the host computer with supervisory equipment connects. The utility model is based on optical fiber temperature measurement, and can reduce the area range of abnormal temperature, namely fire occurrence and need confirmation through optical fiber chessboard type arrangement, so that the place where the fire occurs can be found more quickly and accurately, and false alarm is avoided to a certain extent.
Description
Technical Field
The utility model relates to the field of fire positioning alarm, in particular to a fire positioning alarm device based on temperature measurement optical fibers.
Background
With the rapid development of civil aviation transportation industry and container freight industry, events such as airplane fire alarm, express delivery transportation fire and the like also frequently occur in recent years. At present, smoke detectors are used in cargo holds and warehouses of a large number of airplanes to detect fire alarms, and two smoke sensing modes, namely photoelectric and ionic, are common. Both of these approaches have the problem of being susceptible to dust in the environment, thereby generating false alarms.
The fire detectors currently used have in particular the following drawbacks: the device can only detect a single parameter, is high in false alarm rate, is not suitable for closed space environments which are easy to generate dust, such as aircraft cargo holds, freight containers and the like, and cannot provide visual information, once a fire alarm signal exists, pilots and crew workers are difficult to approach a cabin target area, a freight car driver cannot conveniently find out the closed space environments at high speed and the like, visual image information is lacked, and whether false alarm is judged. The infrared thermal imager is expensive, small in monitoring area when facing a large space and low in economical efficiency. The common camera can not accurately and quickly respond to the fire detection, and the best fire extinguishing time is missed when the flame is seen. The existing infrared thermal imaging camera can rotate, but is useless or manually controlled, which greatly influences the accuracy and rapidity of the infrared thermal imaging camera on fire monitoring. If the fire extinguishing agent is put into large-scale, although the reaction speed and the accuracy of the fire are improved, the cost is not acceptable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fire positioning alarm device based on temperature measuring optical fibers, which solves the problem that the existing fire alarm device can only alarm after a fire or a spark occurs and does not have the function of preventing the fire in advance.
The technical purpose of the utility model is realized by the following technical scheme:
the utility model provides a fire location alarm device based on temperature measurement optic fibre, is including optic fibre, optic fibre temperature measurement changer, supervisory equipment and the host computer that is used for measuring the temperature, optic fibre with the fiber communication channel of optic fibre temperature measurement changer connects, the wired transmission interface of optic fibre temperature measurement changer is used for connecting the host computer, the host computer with supervisory equipment connects.
Compared with the prior art, the temperature of some sealed environments is measured through the optical fiber capable of realizing temperature measurement, the optical signal measured by the optical fiber is sent to the optical fiber temperature measurement transmitter through the optical fiber communication channel, the optical fiber temperature measurement transmitter mainly takes the distributed optical fiber temperature measurement technology as a principle and is mainly based on Raman scattering, the scattered light enters the wavelength division multiplexer after modulation to obtain Stokes light and anti-Stokes light, the relationship between the light intensity ratio and the temperature can be obtained according to the characteristics of the Stokes light and the anti-Stokes light, on the basis, the actual temperature information can be obtained by combining the internal reference temperature of the temperature measurement system and the corresponding conventional realizable correction algorithm, namely the actual temperature information is a digital signal, the generated digital signal is sent to an upper computer for comparison and judgment, and if the judgment result exceeds the set temperature threshold value, the actual temperature information can be displayed by the upper computer, the monitoring equipment can be used for observing the area with abnormal temperature; the optical fiber transmitter converts the analog signal of the temperature detected by the optical fiber into a digital signal, the upper computer compares and identifies the temperature, the optical fiber transmitter can be a comparator with a comparison function, when the temperature exceeds the temperature threshold set by the comparator, the temperature threshold is lower than the ignition point of goods in a cargo bin or a container, and an alarm is given before the ignition point is reached, so that good reaction time can be provided for workers, and the effect of preventing fire in advance is achieved.
Furthermore, the optical fiber temperature measuring transmitter comprises a first optical fiber temperature measuring transmitter and a second optical fiber temperature measuring transmitter, and at least two optical fibers are connected to the optical fiber communication channels of the first optical fiber temperature measuring transmitter and the second optical fiber temperature measuring transmitter.
Furthermore, the optical fibers connected to the first optical fiber temperature measuring transmitter and the second optical fiber temperature measuring transmitter are arranged in a staggered manner.
Furthermore, the device also comprises a power supply module, wherein the power supply module is electrically connected with the optical fiber temperature measuring transmitter, the monitoring equipment and the upper computer.
Further, the monitoring equipment is an infrared thermal imaging camera capable of rotating 360 degrees.
Furthermore, the wired transmission interface of the optical fiber temperature measuring transmitter is a USB interface.
Furthermore, the optical fiber temperature measurement transmitter is a temperature sensing optical cable distributed temperature measurement host.
Furthermore, the device also comprises an audible and visual alarm which is connected with an output port of the upper computer.
Furthermore, the device also comprises a dust detector electrically connected with the upper computer and used for detecting the dust concentration.
Furthermore, the model of the dust detector is a sea crystal HJ-CW-HPC300 hand-held laser dust detector.
Compared with the prior art, the utility model has the following beneficial effects:
the optical fiber temperature measurement-based fire disaster area identification method based on the optical fiber temperature measurement can reduce the area range of abnormal temperature, namely fire disaster when needing to be confirmed through optical fiber chessboard type arrangement, and can find the fire disaster place more quickly and accurately. The infrared camera is expensive, and the monitoring range is automatically adjusted through temperature measurement optical fiber positioning and the existing software, so that the using quantity can be reduced, the economy is improved, and the accuracy is improved. Through the combined use of the optical fiber and the infrared thermal imaging technology, the secondary confirmation function can be achieved, and monitoring personnel can visually know the fire. The application can be applied to airtight spaces such as aircraft cargo holds, train containers and express delivery transport containers, and can also be applied to places such as terminal buildings, books and archives.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is a schematic structural diagram according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a staggered distribution of optical fibers according to an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1. monitoring equipment; 2. an upper computer; 3. an optical fiber temperature measuring transmitter; 4. a fiber optic communication channel; 5. an optical fiber; 6. a power supply module; 7. an audible and visual alarm; 8. and (5) a dust detector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
It is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example (b):
as shown in fig. 1, the embodiment of the application provides a fire location alarm device based on temperature measurement optical fiber, including optical fiber 5, optical fiber temperature measurement transmitter 3, camera and host computer 2 that are used for measuring the temperature, optical fiber 5 is connected with optical fiber 5 communication channel 4 of optical fiber temperature measurement transmitter 3, and the wired transmission interface of optical fiber temperature measurement transmitter 3 is used for connecting host computer 2, and host computer 2 is connected with the camera.
Specifically, the optical fiber 5 has the advantages of good insulation, high voltage resistance, corrosion resistance, high voltage resistance, strong electromagnetic interference resistance and the like, long service life, high precision and the like, and is applied in a wider environment. The temperature monitoring device can be applied to detecting the internal temperature of an oil depot, the temperature conditions of an aircraft cargo hold, a passenger cabin and an internal circuit, large-area monitoring of a high-speed rail tunnel, and internal monitoring of freight cars and containers. Since one optical fiber temperature measuring transmitter 3 (also called optical fiber temperature measuring demodulator) has a plurality of optical fiber 5 communication channels 4. Therefore, the system can be used for simultaneously monitoring a plurality of bodies, if the optical fiber 5 is deeply inserted into an oil bin for storing fuel oil or other high-risk environments with strict temperature control, when the optical fiber 5 displays that the temperature inside the oil tank is abnormal, the optical fiber temperature measuring transmitter 3 transmits collected signals to the upper computer 2, firstly, the temperature measuring optical fiber 5 is marked, preset addresses (such as optical fibers 5A, B, C and D) are preset and then arranged, when a fire occurs and the temperature is abnormal, the optical fiber 5 transmits back data, a certain section of temperature of the optical fiber 5 is found A, B, C, D to be abnormal, the upper computer 2 identifies information according to the preset addresses and determines abnormal temperature points, and then the upper computer 2 controls the monitoring equipment 1 (a camera and the like) to automatically and rapidly conduct targeted monitoring under the optical fiber 5 temperature measuring and positioning system. And make the peripheral infrared thermal imaging equipment of this oil tank automatic alignment in order to monitor the surface temperature of this jar to this not only can reduce infrared thermal imaging equipment quantity, also enlarge the control area of each camera, more can make an oil tank receive the control at different angles, improve accuracy and economic nature.
The temperature of a sealed environment is measured through an optical fiber 5 capable of realizing temperature measurement, an optical signal measured by the optical fiber 5 is sent to an optical fiber temperature measurement transmitter 3 through a communication channel 4 of the optical fiber 5, the optical fiber temperature measurement transmitter 3 mainly takes a distributed optical fiber temperature measurement technology as a principle and is mainly based on Raman scattering, scattered light enters a wavelength division multiplexer after modulation to obtain Stokes light and anti-Stokes light, a relationship between a light intensity ratio and temperature quantification is obtained according to the characteristics of the Stokes light and the anti-Stokes light, on the basis, the actual temperature information, namely a digital signal, can be obtained by combining the internal reference temperature of a temperature measurement system and a corresponding correction algorithm, the generated digital signal is sent to an upper computer 2 for comparison and judgment, and if the judgment result exceeds a set temperature threshold value, the actual temperature information can be displayed through the upper computer 2, and the fire condition in the area can be observed through the camera.
In another embodiment of the present application, the optical fiber temperature measuring transmitter 3 includes a first optical fiber temperature measuring transmitter and a second optical fiber temperature measuring transmitter, and at least two optical fibers 5 are connected to the optical fiber 5 communication channels 4 of the first optical fiber temperature measuring transmitter and the second optical fiber temperature measuring transmitter.
Specifically, two 3 perpendicular installations of optic fibre temperature measurement changer can construct the 5 overall arrangement of the crossed connection of a checkerboard formula of optic fibre 5, use optic fibre 5 temperature detection technique in the aircraft cargo hold, on the thermal safety management control of container and great space etc., rationally arrange through the multichannel (like the checkerboard formula) just can be in inclosed aircraft cargo hold, the control of arranging in container and the great space, accurate location fire source, the technical problem of the present unable accurate quick fire source of finding of accuracy of having solved effectively, the investigation degree of difficulty to the large tracts of land has been reduced, the modularization has been realized, regional accurate measurement and accurate location.
In another embodiment of the present application, as shown in fig. 1, the optical fibers 5 connected to the first optical fiber temperature measuring transmitter and the second optical fiber temperature measuring transmitter are arranged in a staggered manner.
Specifically, as shown in fig. 1, the optical fibers 5 are arranged in a checkerboard manner, so that the optical fibers 5 reasonably cover the whole monitoring space, which facilitates management and control of places with orderly arrangement, such as places for storing petroleum or containers, where the containers or oil tanks are normally arranged, and then the optical signals transmitted back by the optical fibers 5 are better positioned at abnormal positions by the crossed checkerboard arrangement, so that the checkerboard arrangement of the optical fibers 5 is applied: according to different applications of the optical fiber temperature measuring transmitter 3, the area of the optical fiber 5 capable of accurately monitoring the temperature is measured in advance, and if the common point type temperature measurement in the prior art (the monitoring point is taken as the center of a circle, and a circle is drawn by the radius capable of sensing the temperature), the internal closed range can be accurately monitored through four monitoring points of a closed graph crossed by a plurality of lines in a horizontal direction and a vertical direction.
In another embodiment of the application, the device further comprises a power module 6, and the power module 6 is electrically connected with the optical fiber temperature measuring transmitter 3, the camera and the upper computer 2.
Specifically, the power module 6 supplies power to the equipment requiring electric energy, a storage battery and the like can be selected for supplying power, and certainly, the power can also be supplied by external 220V voltage.
In another embodiment of the present application, the monitoring device 1 is an infrared thermal imaging camera capable of rotating 360 degrees.
Specifically, an infrared thermal imaging camera capable of freely rotating is installed at a proper position and is connected with instruments such as a display screen in a monitoring room through a wire and a power supply component. The specific position of the temperature abnormal place can be displayed, and the information transmitted by the optical fiber 5 is positioned by the software on the computer or the raspberry and transmitted to the infrared thermal imaging camera control equipment, so that the infrared thermal imaging camera control equipment automatically rotates and focuses on the temperature abnormal place. The infrared thermal imaging is passive imaging, and external light sources such as sunlight and lamplight are not needed. The monitoring system can be used for monitoring environments such as tunnels, nights and closed spaces. The target and the ambient environment are used for temperature difference imaging, the contrast is high, the action distance is long, the fire can be accurately and visually reflected, the real-time temperature in the monitoring range can be displayed through the characteristics of the target and the ambient environment, and the secondary confirmation effect can be achieved. The image display and the temperature display can help monitoring personnel to visually recognize the fire hazard degree, and the technical problem that the internal fire condition can not be observed in a targeted manner in the closed and lightless environment such as an aircraft cargo hold or a container is effectively solved. The responsible person is helped to react quickly, and a corresponding solution is adopted. According to the technical characteristics of temperature sensitivity, passive imaging, all-weather working, quick response, no disturbance to target temperature, remote or difficultly-contacted target temperature measurement, visual and visible temperature distribution and the like, the temperature measurement optical fiber 5 is used for information transmission, and the upper computer 2 automatically controls the rotating direction of the temperature measurement optical fiber, so that the upper computer can monitor the position with abnormal temperature in a targeted manner, reduces the required number of equipment, improves the economy and can take the task of large-area monitoring. For example, the temperature monitoring can be carried out in large-range monitoring environments such as tunnels, oil depots and the like, and real-time pictures can be transmitted. The technical problems of resource waste and inattentiveness caused by high cost of large-area infrared thermal imaging equipment are solved.
In another embodiment of the present application, the wired transmission interface of the optical fiber temperature measuring transmitter 3 is a USB interface.
Specifically, the transmission of the digital signal is realized through the interface, and the upper computer 2 processes the digital signal.
In another embodiment of the present application, the optical fiber temperature measuring transmitter 3 is a temperature sensing optical cable distributed temperature measuring host.
Specifically, the type of the temperature sensing optical cable distributed temperature measurement host can be DTS-PTCK-1040, the host is a distributed temperature detection system based on a Raman back scattering principle and an optical time domain reflection technology, and the transmission temperature sensing optical cable has the characteristics of strong reliability, passive intrinsic safety, electromagnetic interference resistance, corrosion resistance, good temperature tolerance, long transmission distance and the like. The temperature real-time detection in a large range and a long distance is realized, and the temperature real-time detection device has the advantages that the traditional temperature sensor cannot compare with. The product is mainly applied to the field of continuous real-time online monitoring of temperature.
In another embodiment of the present application, the apparatus further includes an audible and visual alarm 7, and the audible and visual alarm 7 is connected to the output port of the upper computer 2.
Specifically, the sound-light alarm is mainly used for prompting sound-light alarm, police alarms or alarms with the same function can be selected, and after all, personnel on duty have certain objective problems, so that sound-light alarm is immediately started when the temperature is abnormal, and a certain warning function can be achieved.
In another embodiment of the present application, as shown in fig. 1, the apparatus further includes a dust detector 8 electrically connected to the upper computer for detecting the dust concentration.
It is specific, the detection device of this application still can use some places that require much higher to dust concentration, like flour storage bin etc, install dust detection appearance 8 and supervisory equipment 1 on the wall body of flour warehouse, install on flour warehouse's subaerial with reasonable arranging (being similar to the arranging of checkerboard formula) with optic fibre 5 through optic fibre 5 communication channel 4 with optic fibre temperature measurement changer 3, when detecting the temperature anomaly, the display screen shows its temperature anomaly specific position in place, and through software with the automatic transmission of the information location temperature anomaly point of optic fibre 5 transmission infrared thermal imaging camera controlgear, make its automatic rotation, focus on the temperature anomaly place. Therefore, under the double monitoring of the dust concentration and the temperature, the fire disaster can be avoided to a great extent.
In yet another embodiment of the present application, the dust detector 8 is a Haiyuan HJ-CW-HPC300 hand held laser dust detector.
Specifically, the handheld laser dust detector for the sea crystal HJ-CW-HPC300 is relatively cheap and excellent in performance, and is matched with the optical fiber 5 for temperature detection, so that the overall safety protection can be guaranteed, and expensive equipment is not needed for the detector, and the use cost is increased.
In conclusion, this application can be used on aircraft warehouse, power module 6 supplies power for optic fibre temperature measurement changer 3, host computer 2 and supervisory equipment 1, optic fibre temperature measurement changer 3 passes through optic fibre 5 communication channel 4 and connects inside the warehouse with reasonable arranging (being similar to the arranging of checkerboard formula) with optic fibre 5, when detecting the temperature anomaly, the display screen shows its temperature anomaly place concrete position, and through software with the information positioning temperature anomaly point automatic transmission of optic fibre 5 transmission for infrared thermal imaging camera controlgear, make its automatic rotation, focus on the temperature anomaly place. The problem of high false fire alarm rate of the cargo compartment of the airplane is solved, and the cargo compartment is monitored by fire alarm. The infrared thermal imaging equipment can provide real-time pictures for the captain and the crew, and emphatically display whether the temperature of the monitored area is abnormal or not according to the characteristics of the infrared thermal imaging equipment. And the optical fiber 5 can play the effects of detecting temperature and positioning through reasonable arrangement, and can give an alarm when the temperature is detected to be abnormal so as to inform the captain and the crew. The space positioning can help the thermal imaging equipment to automatically adjust the visual angle or help related personnel to manually adjust the monitoring area of the equipment, and secondary confirmation is carried out on the fire alarm. The false alarm rate is reduced, and the economic loss, the social influence and the like caused by false alarm are reduced.
The method can also be applied to the container freight industry, and the responsible personnel such as drivers and the like cannot be allowed to confirm in time under the condition of fire or fire alarm, wherein the limitation is caused by the tightness and the limitation under the high-speed transportation environment. Under the condition, the monitoring equipment 1 is difficult to quickly and conveniently enable a driver to know the fire (for example, the monitoring equipment 1 is not aligned with a fire source or a camera needs to be manually rotated and the like), at the moment, the optical fiber 5 in the application can position the fire, the infrared thermal imaging equipment is automatically aligned with an area with abnormal temperature, and a positioning picture is directly displayed to related responsible personnel, so that the fire is more convenient to confirm, the infrared thermal imaging equipment is convenient to control at the initial stage of the fire, and the economic loss and the personal threat are reduced.
The method can also be applied to places with high requirements on dust concentration detection, such as flour storage warehouses, flour production plants, cement storage warehouses and/or cement production plants and the like.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a fire positioning alarm device based on temperature measurement optic fibre, its characterized in that, including optic fibre (5), optic fibre temperature measurement changer (3), supervisory equipment (1) and the host computer (2) that are used for measuring temperature, optic fibre (5) with optic fibre (5) communication channel (4) of optic fibre temperature measurement changer (3) are connected, the wired transmission interface of optic fibre temperature measurement changer (3) is used for connecting host computer (2), host computer (2) with supervisory equipment (1) are connected.
2. The fire positioning and alarming device based on temperature measuring optical fibers as claimed in claim 1, wherein the optical fiber temperature measuring transmitter (3) comprises a first optical fiber temperature measuring transmitter and a second optical fiber temperature measuring transmitter, and at least two optical fibers (5) are connected to the optical fiber communication channels (4) of the first optical fiber temperature measuring transmitter and the second optical fiber temperature measuring transmitter.
3. The fire positioning and alarming device based on temperature measuring optical fibers as claimed in claim 2, wherein the optical fibers (5) connected to the first optical fiber temperature measuring transmitter and the second optical fiber temperature measuring transmitter are arranged in a staggered manner.
4. The fire positioning and alarming device based on the temperature measuring optical fiber is characterized by further comprising a power supply module (6), wherein the power supply module (6) is electrically connected with the optical fiber temperature measuring transmitter (3), the monitoring equipment (1) and the upper computer (2).
5. The fire positioning and alarming device based on the temperature measuring optical fiber is characterized in that the monitoring equipment (1) is an infrared thermal imaging camera capable of rotating 360 degrees.
6. The fire positioning and alarming device based on the temperature measurement optical fiber as recited in claim 1, wherein the wired transmission interface of the optical fiber temperature measurement transmitter (3) is a USB interface.
7. The fire positioning and alarming device based on the temperature measuring optical fiber as recited in claim 1, wherein the optical fiber temperature measuring transmitter (3) is a temperature sensing optical cable distributed temperature measuring host.
8. The fire positioning and alarming device based on the temperature measuring optical fiber is characterized by further comprising an audible and visual alarm (7), wherein the audible and visual alarm (7) is connected with an output port of the upper computer (2).
9. The fire location alarm device based on temperature measuring optical fibers as claimed in claim 1, further comprising a dust detector (8) electrically connected with the upper computer for detecting dust concentration.
10. The fire positioning alarm device based on temperature measuring optical fibers as claimed in claim 9, wherein the model of the dust detector (8) is a sea crystal HJ-CW-HPC300 hand-held laser dust detector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220104290.4U CN216697466U (en) | 2022-01-14 | 2022-01-14 | Fire positioning alarm device based on temperature measurement optical fiber |
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| CN202220104290.4U CN216697466U (en) | 2022-01-14 | 2022-01-14 | Fire positioning alarm device based on temperature measurement optical fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115457745A (en) * | 2022-09-20 | 2022-12-09 | 浙江振东光电科技有限公司 | Exclusion method for distributed optical fiber temperature measurement zone alarm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115457745A (en) * | 2022-09-20 | 2022-12-09 | 浙江振东光电科技有限公司 | Exclusion method for distributed optical fiber temperature measurement zone alarm |
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