CN113689651B - Early fire early warning method and device for cable channel, early warning monitoring platform and storage medium - Google Patents
Early fire early warning method and device for cable channel, early warning monitoring platform and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of cable fire prevention, in particular to a cable channel early fire warning method, a device, a warning monitoring platform and a storage medium, wherein the method comprises the following steps: selecting a plurality of infrared temperature measuring areas according to a cable layout diagram in the cable channel, and respectively installing a CO concentration detection device and a CO concentration detection device in the cable channel 2 Concentration detection device, O 2 The concentration detection device and the smoke concentration detection device are respectively provided with a plurality of temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable; setting early warning threshold values and warning threshold values of the concentrations of all devices, wherein the warning threshold values are larger than the early warning threshold values, acquiring data of all the devices, judging whether the data reach the threshold values or not, and sending first early warning information if the data reach the threshold values; continuously monitoring data, if the data is accelerated to increase, early warning that the fire hazard is increased, and if the data is reduced, indicating that the fire is reduced; the invention further provides an emergency treatment scheme of fire early warning linkage fire extinguishing, and the utility of the early fire early warning method of the cable channel is fully exerted.
Description
Technical Field
The invention relates to the technical field of cable fire prevention, in particular to a cable channel early fire warning method, a cable channel early fire warning device, a cable channel early fire warning monitoring platform and a storage medium.
Background
Because the cable channel is long and narrow and closed, the fire hidden danger is difficult to find and get rid of, easily causes the section to lose when the conflagration takes place, causes extensive power failure. Researches find that the fire caused by heating at the cable connecting part due to current overload of a disaster source, aging of an insulating layer and the like which cause the fire of a cable channel accounts for a large proportion of the cable fire. In addition, after a fire disaster is caused by the faults of dust, oil stains, inflammables, electric welding sparks and other equipment, the fire accident happens to the outside of the cable occasionally, and the cable connection part is very easily affected at the moment and becomes a dangerous point of the fault of the power system.
In the related technology, the fire prevention measures of the cable channel are laid only by referring to the experience data of fire prevention products, the fire detection and protection capabilities are limited, and aiming at the problem of extinguishing early fire of the cable channel, various regulations and specifications in the fire protection industry have no clear provisions for guiding the design of a fire protection and extinguishing system. In the current engineering practice, the selection of the type of an automatic fire extinguishing system is greatly controversial by designers in the industry, and no specific fire extinguishing system implementation scheme exists; the power cable channel has the advantages of small space, long and narrow structure, complex environment, inconvenient communication and poor early warning timeliness of the fire detection device.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the early-stage fire early-warning method and device for the cable channel, the early-warning monitoring platform and the storage medium are provided, the system identification and trend judgment are completed by integrating the electrical, temperature, gas and other characteristic parameters of the cable, the early-warning and warning of the fire are realized, and the active safety guarantee is provided for the cable channel.
In order to achieve the purpose, the invention adopts the technical scheme that:
on one hand, the invention provides an early fire warning method for a cable channel, which comprises the following steps:
selecting a plurality of infrared temperature measuring areas according to a cable layout in a cable channel, and respectively installing a CO concentration detection device and a CO in the cable channel 2 Concentration detection device, O 2 The concentration detection device and the smoke concentration detection device are respectively provided with a plurality of temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable;
respectively setting the infrared temperature measurementZone, CO concentration detection device, and CO 2 Concentration detection device, O 2 The concentration detection device, the smoke concentration detection device and the early warning threshold value and the warning threshold value of the temperature measuring point; the infrared temperature measurement area, the CO concentration detection device and the CO 2 The early warning threshold values of the concentration detection device, the smoke concentration detection device and the temperature measuring point are all smaller than the warning threshold value, and O is 2 The early warning threshold value of the concentration detection device is larger than the warning threshold value;
acquiring temperature measurement data, CO concentration detection data and CO of the infrared temperature measurement area 2 Concentration detection data, O 2 The method comprises the following steps of (1) detecting concentration data, smoke concentration detection data, cable A-phase temperature measurement data, cable B-phase temperature measurement data and cable C-phase temperature measurement data;
when the temperature measurement data, the CO concentration detection data and the CO in the infrared temperature measurement area are detected 2 Any one of the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is greater than an early warning threshold value or O 2 Sending first early warning information when the concentration detection data is smaller than an early warning threshold value, wherein the first early warning information is used for indicating that fire hazard exists in the current cable channel;
continuously monitoring, and continuously increasing the data larger than the early warning threshold value or the data smaller than the early warning threshold value 2 Continuously reducing the concentration detection data, judging an increased first rate or a reduced second rate, and if the first rate or the second rate is greater than a preset rate, sending second early warning information, wherein the second early warning information is used for indicating that the fire hazard is increased; if the data greater than the warning threshold decreases within a predetermined time period, or O 2 If the detection data are increased within a preset time, sending third early warning information, wherein the third early warning information is used for indicating that the hidden fire danger is relieved;
when any one of the temperature measurement data of the infrared temperature measurement area, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is larger than an alarm threshold value, and the CO concentration detection data and the CO are detected 2 Any one of the concentration detection data and the smoke concentration detection data is greater than an alarm threshold value or O 2 The concentration detection data is less than the alarm thresholdSending alarm information, wherein the alarm information is used for indicating that a fire accident occurs in the current cable channel;
and the priority of the alarm information is higher than that of the early warning information.
Furthermore, the system also comprises a plurality of fire fighting devices and video monitoring devices which are arranged according to the cable layout diagram in the cable channel;
the fire fighting equipment is arranged so that a fire fighting range completely covers the cable channel, the video monitoring equipment is arranged so that a monitoring range completely covers the cable channel, and real-time image information of the cable channel is acquired by setting the video monitoring equipment in an open state;
when the processor sends out alarm information or real-time image information, the processor is linked and matched with nearby fire-fighting equipment to extinguish fire.
Further, counting the continuous occurrence times and the early warning positions of the first early warning information within a set time threshold;
when the continuous occurrence frequency of the first early warning information in the set time threshold is not less than the set early warning frequency threshold, recording as the characteristic of the typical hidden danger of fire in the cable channel; evacuating personnel according to the real-time image information of the cable channel, closing a fireproof door of the cable channel, and exhausting air and cooling the early warning position.
Further, the early warning threshold value and the warning threshold value of the temperature measuring points of the infrared temperature measuring area, the cable A phase, the cable B phase and the cable C phase are 65 ℃ and 90 ℃ respectively.
Further, the early warning threshold value and the warning threshold value of the CO concentration detection device and the flue gas concentration detection device are respectively 5 mg/m 3 And 20 mg/m 3 。
Further, the CO is 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 850ppm and 1500ppm.
Further, said O is 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 19.5% volume and 18% volume.
Further, the measuring instrument of the infrared temperature measuring area is a thermal infrared imager; the CO concentration detection device and CO 2 Concentration detection device, O 2 The concentration detection device and the smoke concentration detection device are integrated into a four-in-one gas detector; the measuring device of the temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable is a built-in cable joint conductor temperature measuring system.
On the other hand, the invention also provides a cable channel early fire warning device, which comprises: a processor for executing the following program modules stored in memory:
the laying module is used for laying infrared temperature measuring areas according to a cable layout diagram in the cable channel, laying temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable, and laying a CO concentration detection device and a CO concentration detection device in the cable channel 2 Concentration detection device, O 2 The installation positions of the concentration detection device and the smoke concentration detection device;
a threshold setting module for setting infrared temperature measuring region, CO concentration detection device and CO 2 Concentration detection device, O 2 The early warning threshold value and the alarming threshold value of the concentration detection device, the smoke concentration detection device and the temperature measuring point; wherein, the infrared temperature measuring area, the CO concentration detecting device and the CO 2 The early warning threshold values of the concentration detection device, the smoke concentration detection device and the temperature measuring point are all smaller than the warning threshold value, and O is 2 The early warning threshold value of the concentration detection device is larger than the warning threshold value;
a first acquisition module for acquiring the temperature measurement data of the infrared temperature measurement area, the CO concentration detection data and the CO 2 Concentration detection data, O 2 Concentration detection data, flue gas concentration detection data, cable A-phase temperature measurement data, cable B-phase temperature measurement data and cable C-phase temperature measurement data;
the first judgment module is used for judging that fire hazard exists in the current cable channel when the monitored environment in the cable channel meets a first condition, and the processor sends out first early warning information; the first condition is temperature measurement data of the infrared temperature measurement area, CO concentration detection data and CO 2 Any one of the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is greater than an early warning threshold value or O 2 Number of concentration detectionsIf the value is smaller than the early warning threshold value;
the sixth judging module is used for judging that the fire hazard of the current cable channel is increased when the monitored environment in the cable channel meets a third condition, and the processor sends out second early warning information; the third condition is that in the continuous monitoring process, the data larger than the early warning threshold value is continuously increased or O 2 The concentration detection data continues to decrease, and the increased first rate or the decreased second rate is greater than a predetermined rate;
the seventh judging module is used for judging that the fire hazard of the current cable channel is removed when the monitored environment in the cable channel meets a fourth condition, and the processor sends out third early warning information; the fourth condition is that in the continuous monitoring process, the data larger than the early warning threshold value is reduced within a preset time length, or O 2 Detecting that data is increasing within a predetermined time period;
the second judging module is used for judging that a fire accident happens to the current cable channel when the monitored environment in the cable channel meets a second condition, and the processor sends out alarm information; the second condition is that any one of the infrared temperature measurement area temperature measurement data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is larger than an alarm threshold value, and the CO concentration detection data are 2 Any one of the concentration detection data and the smoke concentration detection data is greater than an alarm threshold value or O 2 The concentration detection data is smaller than an alarm threshold;
and the priority module is used for giving priority to and only displaying the alarm information when the environment in the cable channel meets the first condition and the second condition.
Furthermore, the laying module also comprises fire fighting equipment and video monitoring equipment which are laid according to a cable layout diagram in the cable channel; wherein the fire fighting equipment is arranged such that the fire fighting range completely covers the cable channel, and the video monitoring equipment is arranged such that the monitoring range completely covers the cable channel;
the device also comprises a second acquisition module, a second display module and a second display module, wherein the second acquisition module is used for acquiring the real-time image information of the cable channel by setting the video monitoring equipment in an open state;
the third judgment module is used for judging whether a fire occurs in the coverage area of the video monitoring equipment according to the real-time image information;
and the linkage module is used for linking and matching the nearby fire fighting equipment to extinguish fire when the processor judges that a fire exists in the coverage area of the video monitoring equipment according to the alarm information or the third judgment module.
Furthermore, the device also comprises a counting module which is used for counting the continuous occurrence times and the early warning positions of the early warning information within a set time threshold;
the fourth judgment module is used for judging the continuous occurrence frequency of the first early warning information in the set time threshold and the size of the set early warning frequency threshold; when the fourth judging module judges that the continuous occurrence frequency of the first early warning information in the set time threshold is not less than the set early warning frequency threshold, the typical hidden danger characteristic of the fire disaster in the cable channel is judged;
the fifth judging module is used for judging whether personnel exist in the cable channel according to the real-time image information of the cable channel; if the personnel are in the cable channel, the processor firstly sends evacuation information to evacuate the personnel, then controls a fireproof door for closing the cable channel, and simultaneously carries out air exhaust and cooling on the early warning position; if no personnel are in the cable channel, the processor controls the fireproof door for closing the cable channel, and meanwhile, the early warning position is ventilated and cooled.
Further, the early warning threshold and the warning threshold of the temperature measuring points of the infrared temperature measuring area, the cable A phase, the cable B phase and the cable C phase, which are set by the threshold setting module, are 65 ℃ and 90 ℃ respectively.
Further, the early warning threshold value and the warning threshold value of the CO concentration detection device and the flue gas concentration detection device are respectively 5 mg/m 3 And 20 mg/m 3 。
Further, the CO is 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 850ppm and 1500ppm. Further, said O is 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 19.5% of volume and 18% of volume.
The early warning and monitoring platform is constructed based on BIM/GIS integration and comprises a platform display center, a 3D cable tunnel, a GIS positioning module and the early warning device for the cable channel; the 3D cable tunnel, the GIS positioning module and the cable channel early fire warning device are respectively connected to a platform display center in an Internet of things communication mode;
the platform display center obtains temperature measurement data, CO concentration detection data and CO of the infrared temperature measurement area according to the positioning data of the GIS positioning module and the early fire warning device of the cable channel 2 Concentration detection data, O 2 And the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data are visually analyzed, so that the early warning monitoring platform can perform real-time data display, situation analysis and historical backtracking.
The present invention also provides a storage medium containing computer executable instructions, wherein the computer executable instructions, when executed by a computer processor, are used to perform the cable channel early fire warning method.
The beneficial effects of the invention are as follows: the invention discloses a cable channel early fire early warning method, a device, an early warning monitoring platform and a storage medium, wherein the method and the device construct an early fire early warning model by selecting fire characteristic parameters and a preset threshold value, and carry out real-time fire early warning and warning according to the early fire early warning model; the body is as follows: data of a plurality of infrared temperature measuring areas and temperature measuring point data of a three-phase cable joint distributed in a cable channel, and CO 2 、O 2 And the smoke concentration detection value is used as a selected fire characteristic parameter, the early warning threshold value and the warning threshold value of each detection data are preset, and when the infrared temperature measurement area, the cable A-phase, B-phase and C-phase temperature measurement data and the CO and CO are measured 2 And any one of the smoke concentration detection data is greater than the early warning threshold value or O 2 When the concentration detection data is smaller than the early warning threshold value, early warning information is sent out, and fire hazard exists; when any one of the temperature measurement data of the infrared temperature measurement area, the A phase, the B phase and the C phase of the cable is greater than the alarm threshold value, and CO are detected 2 And any one of the smoke concentration detection data is greater than an alarm threshold value or O 2 Concentration detectionAnd if the data is smaller than the alarm threshold value, sending alarm information and generating a fire accident.
The early warning monitoring platform disclosed by the invention is constructed based on BIM/GIS, on the basis of a fire early warning device, the fire characteristic parameter value in a cable channel is obtained in real time, the change situation of the fire characteristic parameter of the cable channel is really and accurately obtained by combining 3D cable channel and GIS positioning data, the visual analysis in a platform display center is realized, and the real-time data display, situation analysis and history backtracking are convenient to carry out.
In addition, the method and the device further provide an emergency treatment scheme of fire early warning linkage fire extinguishing, fully play the effect of the early fire early warning method of the cable channel, improve the overall level of fire prevention and control of the power cable line, promote the fire prevention and control work of the cable channel to be deeply carried out, and fully ensure the safe, stable and reliable operation of the cable line.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for early warning of a fire in a cable duct according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an early fire warning device for a cable channel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a fire early warning linkage fire fighting device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of classification of early warning information hidden danger levels in the embodiment of the present invention.
Detailed Description
Based on the current research and display at home and abroad, the fire monitoring and early warning is analyzed by taking parameters such as temperature, gas and smoke before open fire occurs as means, and the application of fire judgment in a wide environment is very wide; however, the existing early warning method and device have the technical problem of poor timeliness when applied to a power cable system due to the fact that the power cable channel is in a special environment and inconvenient to communicate, fire monitoring and early warning criteria for the special environment of the cable channel are not researched systematically, and cable fire can not be discovered and early warned as soon as possible. The invention aims to provide an early fire early warning method and device for solving the problem of cable channel environment, and an early fire early warning monitoring platform based on a cable channel early fire early warning method model, so that the functions of real-time monitoring, early warning, fire-fighting signal pushing and the like of cable channel fire characteristic quantity are realized.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention discloses a cable channel early fire warning method, which comprises the steps of regularly arranging monitoring elements for monitoring selected fire characteristic parameters in a cable channel, acquiring accurate data of the fire characteristic parameters in the cable channel in real time, constructing a cable channel early fire warning model according to the real-time data, fire warning and warning threshold values, judging the current cable channel fire trend in real time according to the model, issuing fire warning information to the outside, and providing an emergency processing scheme for fire warning linkage fire extinguishing.
Specifically, an embodiment of the present invention discloses a method for early warning of fire in a cable channel as shown in fig. 1, which is applied to a processor and includes the following steps:
s10: selecting a plurality of infrared temperature measuring areas according to a cable layout diagram in the cable channel, and respectively installing a CO concentration detection device and a CO concentration detection device in the cable channel 2 Concentration detection device, O 2 The concentration detection device and the smoke concentration detection device are respectively provided with a plurality of temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable; infrared temperature measuring area, CO concentration, CO 2 Concentration, O 2 The concentration, the smoke concentration and the temperatures of the A-phase joint, the B-phase joint and the C-phase joint are selected fire condition characteristic parameters;
s20: respectively setting the infrared temperature measuring area, the CO concentration detecting device and the CO 2 Concentration detection device, O 2 The concentration detection device, the smoke concentration detection device and the early warning threshold value and the warning threshold value of the temperature measuring point; the infrared temperature measurement area, the CO concentration detection device and the CO 2 The early warning threshold values of the concentration detection device, the smoke concentration detection device and the temperature measuring point are all smaller than the warning threshold value, and O is 2 The early warning threshold value of the concentration detection device is larger than the warning threshold value;
s30: acquiring temperature measurement data, CO concentration detection data and CO of the infrared temperature measurement area 2 Concentration detection data, O 2 Concentration detection data, flue gas concentration detection data, cable A-phase temperature measurement data, cable B-phase temperature measurement data and cable C-phase temperature measurement data;
s40: when the temperature measurement data, the CO concentration detection data and the CO in the infrared temperature measurement area are detected 2 Any one of the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is greater than an early warning threshold value or O 2 When the concentration detection data is less than the early warning threshold value, first early warning information is sent out, and the current electricity is judgedThe cable channel has fire hazard;
s50: when any one of the infrared temperature measurement area temperature measurement data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is larger than an alarm threshold value, and the CO concentration detection data, the CO 2 Any one of the concentration detection data and the smoke concentration detection data is greater than an alarm threshold value or O 2 Sending alarm information when the concentration detection data is smaller than an alarm threshold value, and judging that a fire accident happens to the current cable channel;
s60: continuously monitoring when temperature measurement data of the infrared temperature measurement area, CO concentration detection data and CO are detected 2 Any one of the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data which is larger than the early warning threshold value is continuously increased or O-phase temperature measurement data is continuously increased 2 Continuously reducing the concentration detection data, judging the increased first rate or the reduced second rate, and if the first rate or the second rate is greater than a preset rate, sending second early warning information, wherein the second early warning information is used for indicating that the fire hazard is increased; if the data greater than the warning threshold decreases within a predetermined time period, or O 2 And if the detection data are increased within the preset time, sending third early warning information, wherein the third early warning information is used for indicating the relief of the fire hazard.
In order to ensure safety and high efficiency and strive for early treatment of fire, the priority of the alarm information is higher than that of the early warning information in specific implementation, namely when the environment in the cable channel simultaneously meets the early warning information sending condition and the alarm information sending condition, the alarm information is preferentially displayed. The early warning information sending condition and the warning information sending condition both belong to the early fire warning model of the cable channel, and the early fire warning judgment can be quickly carried out directly through data comparison when the early warning model is applied.
Meanwhile, in order to accurately obtain the change characteristics of the fire hazard in the cable channel, the embodiment of the invention detects the temperature measurement data, the CO concentration detection data and the CO in the infrared temperature measurement area in the cable channel 2 Concentration detection data, flue gas concentration detection data, cable A-phase temperature measurement data, cable B-phase temperature measurement data and cableC phase thermometry data and O 2 And continuously monitoring the concentration detection data, and obtaining the change characteristics of the fire hazard in the cable channel through the continuously monitored data. And the working personnel can fully know the real situation in the current cable channel according to the situation of the second early warning information or the third early warning information, and formulate a fire-fighting strategy according to the change characteristics of the fire hazard in the channel.
In order to achieve the technical effect of early fire warning linkage fire extinguishing, the method further comprises a plurality of fire fighting devices and video monitoring devices which are arranged according to a cable layout diagram in the cable channel, wherein the fire fighting devices are arranged so that a fire fighting range completely covers the cable channel, the video monitoring devices are arranged so that a monitoring range completely covers the cable channel, and the video monitoring devices are arranged in an opening state to obtain real-time image information of the cable channel; when the processor sends out alarm information or real-time image information, the processor is linked and matched with nearby fire-fighting equipment to extinguish fire. On the one hand, the fire fighting is carried out through the linkage of the alarm information, on the other hand, the fire fighting is further carried out through the linkage of the real cable channel environment of the video monitoring reaction, and the misjudgment is avoided.
Meanwhile, in order to ensure that the characteristics of the early fire can be accurately found, the method further provides a step of determining that the cable channel has fire hidden danger; the method specifically comprises the following steps: counting the continuous occurrence times and early warning positions of the first early warning information within a set time threshold; when the continuous occurrence frequency of the first early warning information in the set time threshold is not less than the set early warning frequency threshold, recording as the characteristic of the typical hidden danger of fire in the cable channel; evacuating personnel according to the real-time image information of the cable channel, closing a fireproof door of the cable channel, and exhausting air and cooling the early warning position. Generally, the set time threshold for judging the continuous occurrence frequency of the first early warning information is usually short, the set first early warning frequency threshold is moderate, for example, if the first early warning information continuously occurs for 2 times or more per second, the characteristic of the typical hidden fire hazard in the cable channel is judged. When the method is implemented specifically, the specific values of the set time threshold value and the set early warning threshold value can be adjusted and changed according to the application environment. In addition, the fire hazard grade can be set according to the continuous occurrence times of the first early warning information within the set time threshold, for example, the more the occurrence times, the higher the fire hazard grade, and then the early warning operation is executed according to the fire hazard grade, so that the method not only can evacuate people to the outside of the cable channel and close the fire door of the cable channel, but also can exhaust air to the early warning position and reduce the temperature, and also needs to carry out load transfer.
In this embodiment, the early warning thresholds and the warning thresholds of the temperature measuring points of the infrared temperature measuring region, the cable a phase, the cable B phase and the cable C phase set in the early fire warning method for the cable channel are 65 ℃ and 90 ℃ respectively, and the early warning thresholds and the warning thresholds of the CO concentration detection device and the flue gas concentration detection device are 5 mg/m respectively 3 And 20 mg/m 3 Said CO 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 850ppm and 1500ppm, and O is 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 19.5% of volume and 18% of volume. In an embodiment, the detection device for acquiring the data specifically includes: the measuring instrument of the infrared temperature measuring area is a thermal infrared imager, and the integrated four-in-one gas detector realizes CO concentration and CO simultaneously 2 Concentration, O 2 Detecting the concentration and the smoke concentration; the measuring device of the temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable is a built-in cable joint conductor temperature measuring system. The specific device listed above is only a specific case for implementing the above data detection, the present invention includes but is not limited to the above specific device, and other devices capable of acquiring the above detection data should also be within the scope of the present invention, for example, CO concentration 2 Concentration, O 2 And corresponding gas sensors can be independently adopted for detecting the concentration and the smoke concentration.
Another embodiment of the present invention provides a cable channel early fire warning apparatus as shown in fig. 2 to 4, which includes a processor for executing a program module for early fire warning of a cable channel stored in a memory and operable on the processor, wherein the program module for early fire warning of a cable channel is executed by the processor to implement the method for early fire warning of a cable channel. The early fire warning method for cable channel can be divided into a plurality of modules or units when being executed, and the plurality of modules or units can be a series of instruction sections of computer programs capable of completing specific functions, and the instruction sections are used for describing the execution process of the early fire warning method for cable channel in the device.
As shown in fig. 2, the early fire warning device for cable channel of the present invention comprises the following modules:
the laying module is used for laying an infrared temperature measuring area according to a cable layout in the cable channel, laying temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable, and laying a CO concentration detection device and a CO concentration detection device in the cable channel 2 Concentration detection device, O 2 The installation positions of the concentration detection device and the smoke concentration detection device;
a threshold setting module for setting infrared temperature measuring region, CO concentration detection device and CO 2 Concentration detection device, O 2 The concentration detection device, the smoke concentration detection device and the early warning threshold value and the warning threshold value of the temperature measuring point; wherein, the infrared temperature measuring area, the CO concentration detecting device and the CO 2 The early warning threshold values of the concentration detection device, the smoke concentration detection device and the temperature measuring point are all smaller than the warning threshold value, and O is 2 The early warning threshold value of the concentration detection device is greater than the warning threshold value;
a first acquisition module for acquiring the temperature measurement data of the infrared temperature measurement area, the CO concentration detection data and the CO 2 Concentration detection data, O 2 Concentration detection data, flue gas concentration detection data, cable A-phase temperature measurement data, cable B-phase temperature measurement data and cable C-phase temperature measurement data;
the first judgment module is used for judging that fire hazard exists in the current cable channel when the monitored environment in the cable channel meets a first condition, and the processor sends out early warning information; the first condition is temperature measurement data of the infrared temperature measurement area, CO concentration detection data and CO 2 Any one of the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is greater than an early warning threshold value or O 2 The concentration detection data is smaller than the early warning threshold;
a second judging module for monitoringWhen the environment in the cable channel meets a second condition, judging that the current cable channel has a fire accident, and sending out alarm information by a processor; the second condition is that any one of the infrared temperature measurement area temperature measurement data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is larger than an alarm threshold value, and the CO concentration detection data are 2 Any one of the concentration detection data and the smoke concentration detection data is greater than an alarm threshold value or O 2 The concentration detection data is smaller than an alarm threshold;
the priority module is used for giving priority to and only displaying the alarm information when the environment in the cable channel meets a first condition and a second condition;
the sixth judging module is used for judging that the fire hazard of the current cable channel is increased when the monitored environment in the cable channel meets a third condition, and the processor sends out second early warning information; the third condition is that in the continuous monitoring process, the data larger than the early warning threshold value is continuously increased or O 2 The concentration detection data continues to decrease, and the increased first rate or the decreased second rate is greater than a predetermined rate;
the seventh judging module is used for judging that the fire hazard of the current cable channel is relieved when the monitored environment in the cable channel meets a fourth condition, and the processor sends out third early warning information; the fourth condition is that in the continuous monitoring process, the data larger than the early warning threshold value is reduced within a preset time length, or O 2 Detecting that data is increasing within a predetermined time period; in the embodiment of the invention, the fire behavior is judged according to the continuous variation trend of the data by continuously monitoring the data, so that the fire behavior can be monitored in real time, and rescue goods and materials are increased or reduced.
In order to promote the expanding application of the early fire warning method for the cable channel disclosed by the invention, an emergency treatment scheme for fire warning linkage fire-fighting equipment to extinguish fire is provided; the method specifically comprises the following steps: the laying module also comprises fire fighting equipment and video monitoring equipment which are laid according to a cable layout diagram in the cable channel, wherein the fire fighting equipment is laid in a fire fighting range to completely cover the cable channel, and the video monitoring equipment is laid in a monitoring range to completely cover the cable channel; as shown in fig. 3, the device further includes a second obtaining module for obtaining real-time image information of the cable channel by setting the video monitoring device in an open state, a third judging module for judging whether a fire occurs in the coverage area of the video monitoring device according to the real-time image information, and a linkage module for linking and matching the nearby fire fighting device to extinguish the fire when the processor judges that the fire occurs in the coverage area of the video monitoring device according to the alarm information or the third judging module. By combining early fire warning and fire fighting at the initial stage of fire, emergency response time is fully given when the fire occurs, the fire is quickly removed or the maintenance is indicated, and the safety guarantee is improved; meanwhile, based on the development trend of fire spreading, the early fire is small, the rapid fire extinguishing can be realized, and the fire extinguishing efficiency is improved. For example, when the fire condition is increased according to the sixth judgment module, the fire fighting equipment in a larger range is linked and matched to extinguish fire, and the fire condition can be effectively controlled.
To early fire warning, this embodiment early warning device still further subdivides early warning information, carries out the division of early warning information hidden danger grade promptly. The method specifically comprises the following steps: the statistical module is used for counting the continuous occurrence times and the early warning positions of the early warning information within a set time threshold; the fourth judgment module is used for judging the continuous occurrence frequency of the first early warning information in the set time threshold and the size of the set early warning frequency threshold; when the fourth judging module judges that the continuous occurrence frequency of the first early warning information in the set time threshold is not less than the set early warning frequency threshold, the typical hidden danger characteristic of the fire disaster in the cable channel is judged; the fifth judgment module is used for judging whether personnel exist in the cable channel according to the real-time image information of the cable channel; if the personnel are in the cable channel, the processor firstly sends evacuation information to evacuate the personnel, then controls a fireproof door for closing the cable channel, and simultaneously carries out air exhaust and cooling on the early warning position; if no personnel are in the cable channel, the processor controls to close the fireproof door of the cable channel and simultaneously exhausts air to cool the early warning position. When the cable channel has the characteristic of typical hidden danger of fire, the level of the hidden danger is obviously higher than that of common early warning information. In addition to the hidden danger levels of the typical hidden danger characteristics of the fire, the hidden danger levels can be further divided according to the continuous occurrence times of the early warning information in the set time threshold, for example, the early warning time threshold is set to be 2 times, then the typical hidden danger characteristics enter after exceeding 2 times, when the continuous occurrence times of the early warning information in the set time threshold is 5 times, the hidden danger levels are obviously higher than the hidden danger levels of 2 times, at the moment, the fire is in a state of necessarily occurring, therefore, except that the processor controls the evacuating personnel, the fire door is closed, the air exhaust and cooling at the early warning position are carried out, the load transfer can be carried out, and the fire loss is reduced as much as possible.
In this embodiment, the early warning threshold and the warning threshold of the temperature measuring points of the infrared temperature measuring area, the cable a phase, the cable B phase and the cable C phase set by the threshold setting module in the early fire warning device for the cable channel are 65 ℃ and 90 ℃ respectively; the pre-warning threshold value and the warning threshold value of the set CO concentration detection device and the set flue gas concentration detection device are respectively 5 mg/m 3 And 20 mg/m 3 、CO 2 The early warning threshold and the warning threshold of the concentration detection device are 850ppm and 1500ppm, respectively, and O 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 19.5% volume and 18% volume. The above specific values are only a specific application of the embodiment, and any setting of the concentration and the temperature should be within the protection scope of the present invention.
In a specific embodiment, the early fire warning device with the program module in the cable channel may be a computing device system such as a desktop computer, a notebook, a palm computer, a cloud server, and the like; the device can include, but is not limited to, a processor, a memory, and other components, such as temperature measuring devices, concentration detecting devices, and a transmission device for transmitting detection signals to the processor, which need to be installed after the module is arranged at the selected installation position.
Further, the processor may be a central processing unit of a computer, but may also be other general purpose processors, digital signal processors, application specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like which is the control center for the device and not only sends out warning and alarm messages, but also interfaces and wiring the assembly of the various program modules of the device.
The memory, which is a non-transitory computer-readable storage medium, may be used to store a non-transitory software program, a non-transitory computer-executable program, and modules, such as program instructions/modules corresponding to the cable channel early fire warning method in the embodiment of the present invention, and the processor executes various functional applications and data processing of the processor by running the non-transitory software program, instructions, and modules stored in the memory, so as to implement the cable channel early fire warning method in the above-described method embodiment.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor, and the like. Further, the memory is preferably, but not limited to, a high speed random access memory, for example, but may also be a non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory may optionally include memory remotely located from the processor, and such remote memory may be accessible to the processor via the internet of things to accommodate special circumstances where cable channel narrowing is not convenient. The invention is not limited to the internet of things, and a communication network capable of realizing rapid and stable data transmission in a cable channel special environment is also within the scope disclosed by the invention.
The invention further provides a cable channel early fire warning and monitoring platform, which is constructed based on BIM/GIS integration and comprises a platform display center, a 3D cable tunnel, a GIS positioning module and the cable channel early fire warning device disclosed by the embodiment, wherein the 3D cable tunnel, the GIS positioning module and the cable channel early fire warning device are respectively connected to the platform display center by adopting internet of things communication to realize mutual communication and data acquisition; the real-time temperature information of different parts of the cable and the concentration information of various characteristic gas parameters are visually and dynamically displayed, the information access linkage of fire early warning is realized, and page warning is realized in a platform.
The specific working process is as follows: the platform display center obtains the temperature measurement data of the infrared temperature measurement area, the CO concentration detection data and the CO according to the positioning data of the GIS positioning module and the early fire warning device of the cable channel 2 Concentration detection data, O 2 And the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data are visually analyzed, so that the early warning monitoring platform can display data in real time, analyze situations and backtrack history.
The early fire warning and monitoring platform for the cable channel disclosed by the invention perfects access and integration of monitoring multi-source data, and aims at the multi-source data such as a cable channel monitoring system, and the like, by taking environmental monitoring as a center, associates and fuses data such as equipment state monitoring alarm information, monitoring management data, monitoring logs and the like, constructs a data analysis model, and has data access and integration functions and an associated storage function of the multi-source data. On the basis of keeping original list data, visual graphs of a platform display center are displayed in a centralized mode, and data alarm monitoring and statistics functions are achieved. In a specific embodiment, the visual display comprises abstract data realized by visual chart controls such as curves, bar charts, pie charts and the like, active alarm can be realized by means of colors, flickers and the like aiming at alarm content, and alarm information can be further displayed in a centralized mode through multiple dimensions such as time scales, importance of fire characteristic parameters and the like. In addition, the visualization of the alarm information can comprise the functions of multi-source heterogeneous data integration, alarm data aggregation and hierarchical classification visualization display, alarm intelligent analysis and data mining, accurate and rapid pushing of important events and the like.
The early warning monitoring platform can realize risk identification, assessment and analysis of early fire of the cable channel, realize classified management and control, automatically generate a risk thermodynamic diagram based on a GIS, and realize closed-loop management and control of risk hidden dangers by patrolling and tracking the risk. The early warning monitoring platform has an important function of adopting interaction technologies such as network topology and the like to perform real-time warning display and correlation analysis on various security events, monitoring from each dimensionality from a network layer to a host layer to an application layer, adopting an anti-attack chain to perform traceability analysis on the security events, identifying 5W (who, when, where, why, how) of event behaviors, bringing the work of discovery, analysis, disposal, responsibility pursuit and the like of security risks into daily management work of information security, realizing closed-loop management, and realizing the monitoring, traceability and controllability of the whole process of the security risks. The method provides various statistical analysis views such as a statistical chart, a statistical table, a single column diagram, a cluster column diagram, a pile column diagram and a bubble diagram, supports multi-dimensional parallel analysis of specific indexes of massive business data according to business requirements, and provides data analysis supports such as scrolling, drilling and slicing.
The data situation analysis and history backtracking of the early warning monitoring platform aim to comb online data and historical data, when the early warning monitoring platform is applied specifically, data analysis can be carried out according to application purposes, the data analysis comprises the steps of carrying out data monitoring analysis by adopting analysis methods such as classification, clustering, relevance degree and probability, etc., summarizing early fire characteristic core index abnormal data, analyzing reasons, and carrying out data fusion display in a visual mode. By means of determining core elements, combing association relation, researching analysis technology, constructing analysis model and the like, comprehensive analysis and early warning are carried out on the aspects of risk management and control of early fire of a cable channel and the like on the basis of widely collecting element information and acutely grasping environmental influence and trend change.
In other embodiments, the cable channel early fire warning method disclosed herein is implemented as a software functional unit in a computer program and may be stored in a storage medium containing computer executable instructions when sold or used as a stand-alone product. Based on such understanding, all or part of the processes in the method according to the above embodiment of the present invention may also be implemented by using a computer program to instruct related hardware, where the computer program is stored in a computer readable storage medium, and when the computer program is executed by a processor, the program module for early fire warning of a cable channel may be implemented, and the steps and results of the embodiment of the early fire warning method for a cable channel may be implemented. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk or a solid state disk; the storage medium may also comprise a combination of memories of the kind described above.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (13)
1. A cable channel early fire early warning method is characterized by comprising the following steps:
selecting a plurality of infrared temperature measuring areas according to a cable layout in a cable channel, and respectively installing a CO concentration detection device and a CO in the cable channel 2 Concentration detection device, O 2 The concentration detection device and the smoke concentration detection device are respectively provided with a plurality of temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable;
respectively setting the infrared temperature measuring area, the CO concentration detecting device and the CO 2 Concentration detection device, O 2 The early warning threshold value and the alarming threshold value of the concentration detection device, the smoke concentration detection device and the temperature measuring point; the infrared temperature measurement area, the CO concentration detection device and the CO 2 The early warning threshold values of the concentration detection device, the smoke concentration detection device and the temperature measuring point are all smaller than the warning threshold value, and O is 2 The early warning threshold value of the concentration detection device is larger than the warning threshold value;
acquiring temperature measurement data, CO concentration detection data and CO of the infrared temperature measurement area 2 Concentration detection data, O 2 Concentration detection data, flue gas concentration detection data, cable A-phase temperature measurement data, cable B-phase temperature measurement data and cable C-phase temperature measurement data;
when the temperature measurement data, the CO concentration detection data and the CO in the infrared temperature measurement area are detected 2 Any one of concentration detection data, smoke concentration detection data, cable A-phase temperature measurement data, cable B-phase temperature measurement data and cable C-phase temperature measurement data is greater than pre-determinedAlarm threshold or O 2 Sending first early warning information when the concentration detection data is smaller than an early warning threshold value, wherein the first early warning information is used for indicating that fire hazard exists in the current cable channel;
continuously monitoring, and continuously increasing the data more than the early warning threshold or increasing the data less than the early warning threshold 2 Continuously reducing the concentration detection data, judging an increased first rate or a decreased second rate, and if the first rate or the second rate is greater than a preset rate, sending second early warning information, wherein the second early warning information is used for indicating that the fire hazard is increased; if the data greater than the warning threshold decreases within a predetermined time period, or O 2 If the detection data are increased within the preset time, sending third early warning information, wherein the third early warning information is used for indicating that the fire hazard is relieved, and working personnel know the real situation in the current cable channel according to the second early warning information or the third early warning information and formulate a fire fighting strategy according to the change characteristics of the fire hazard in the channel;
when any one of the temperature measurement data of the infrared temperature measurement area, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is larger than an alarm threshold value, and the CO concentration detection data and the CO are detected 2 Any one of the concentration detection data and the smoke concentration detection data is greater than an alarm threshold value or O 2 Sending alarm information when the concentration detection data is smaller than an alarm threshold, wherein the alarm information is used for indicating that a fire accident happens to the current cable channel;
wherein the priority of the alarm information is higher than that of the early warning information;
the system also comprises a plurality of fire fighting devices and video monitoring devices which are distributed according to a cable layout diagram in the cable channel;
the fire fighting equipment is arranged to enable a fire fighting range to completely cover the cable channel, the video monitoring equipment is arranged to enable a monitoring range to completely cover the cable channel, and real-time image information of the cable channel is obtained by setting the video monitoring equipment in an opening state;
when the processor sends out alarm information or real-time image information and a fire occurs, the processor is in linkage matching with nearby fire-fighting equipment to extinguish a fire, real cable channel environment is reflected through video monitoring to perform linkage fire extinguishing, and misjudgment is avoided;
counting the continuous occurrence times and early warning positions of the first early warning information within a set time threshold;
when the continuous occurrence frequency of the first early warning information in the set time threshold is not less than the set early warning frequency threshold, recording as the characteristic of the typical hidden danger of fire in the cable channel; evacuating personnel according to the real-time image information of the cable channel, closing a fireproof door of the cable channel, and exhausting air and cooling the early warning position.
2. The early fire warning method for the cable channel according to claim 1, wherein the warning thresholds and warning thresholds of the temperature measuring points of the infrared temperature measuring area, the cable phase A, the cable phase B and the cable phase C are 65 ℃ and 90 ℃ respectively.
3. The early fire warning method for cable channel according to claim 1, wherein the warning threshold and the warning threshold of the CO concentration detection device and the flue gas concentration detection device are respectively 5 mg/m 3 And 20 mg/m 3 。
4. The cable channel early fire warning method of claim 1, wherein the CO is present in the cable channel 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 850ppm and 1500ppm.
5. The cable channel early fire warning method of claim 1, wherein O is the number of fire detectors 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 19.5% of volume and 18% of volume.
6. The early fire warning method for cable channels according to claim 4, wherein the measuring instrument of the infrared temperature measuring area is a thermal infrared imager; the CO concentration detection device and CO 2 Concentration detection device, O 2 Four-in-one gas detection device with integrated concentration detection device and smoke concentration detection deviceMeasuring an instrument; the measuring device of the temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable is a built-in cable joint conductor temperature measuring system.
7. The utility model provides a cable channel early fire early warning device which characterized in that includes: a processor for executing the following program modules stored in memory:
the laying module is used for laying infrared temperature measuring areas according to a cable layout diagram in the cable channel, laying temperature measuring points at the joints of the A phase, the B phase and the C phase of the cable, and laying a CO concentration detection device and a CO concentration detection device in the cable channel 2 Concentration detection device, O 2 The installation positions of the concentration detection device and the smoke concentration detection device;
a threshold setting module for setting infrared temperature measuring region, CO concentration detection device and CO 2 Concentration detection device, O 2 The concentration detection device, the smoke concentration detection device and the early warning threshold value and the warning threshold value of the temperature measuring point; wherein, the infrared temperature measuring area, the CO concentration detecting device and the CO 2 The early warning threshold values of the concentration detection device, the smoke concentration detection device and the temperature measuring point are all smaller than the warning threshold value, and O is 2 The early warning threshold value of the concentration detection device is greater than the warning threshold value;
a first acquisition module for acquiring the temperature measurement data of the infrared temperature measurement area, the CO concentration detection data and the CO 2 Concentration detection data, O 2 The method comprises the following steps of (1) detecting concentration data, smoke concentration detection data, cable A-phase temperature measurement data, cable B-phase temperature measurement data and cable C-phase temperature measurement data;
the first judgment module is used for judging that fire hazard exists in the current cable channel when the monitored environment in the cable channel meets a first condition, and the processor sends out first early warning information; the first condition is temperature measurement data of the infrared temperature measurement area, CO concentration detection data and CO 2 Any one of the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is greater than an early warning threshold value or O 2 The concentration detection data is smaller than the early warning threshold;
a sixth judging module for judging whether the current value is greater than the first valueWhen the monitored environment in the cable channel meets a third condition, judging that the fire hazard of the current cable channel is increased, and sending second early warning information by the processor; the third condition is that in the continuous monitoring process, the data larger than the early warning threshold value is continuously increased or O 2 The concentration detection data continues to decrease, and the increased first rate or the decreased second rate is greater than a predetermined rate;
the seventh judging module is used for judging that the fire hazard of the current cable channel is relieved when the monitored environment in the cable channel meets a fourth condition, and the processor sends out third early warning information; the fourth condition is that in the continuous monitoring process, the data larger than the early warning threshold value is reduced within a preset time length, or O 2 Detecting that the data increases within a predetermined time period;
the second judging module is used for judging that the current cable channel has a fire accident when the monitored environment in the cable channel meets a second condition, and the processor sends out alarm information; the second condition is that any one of the infrared temperature measurement area temperature measurement data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data is larger than an alarm threshold value, and the CO concentration detection data and the CO are detected 2 Any one of the concentration detection data and the smoke concentration detection data is greater than an alarm threshold value or O 2 The concentration detection data is smaller than an alarm threshold;
the priority module is used for giving priority to and only displaying the alarm information when the environment in the cable channel meets a first condition and a second condition;
the laying module also comprises fire fighting equipment and video monitoring equipment which are laid according to a cable layout in the cable channel; wherein the fire fighting equipment is arranged such that the fire fighting range completely covers the cable channel, and the video monitoring equipment is arranged such that the monitoring range completely covers the cable channel;
the early warning device also comprises a second acquisition module which is used for acquiring real-time image information of the cable channel by setting the video monitoring equipment in an open state;
the third judgment module is used for judging whether a fire occurs in the coverage area of the video monitoring equipment according to the real-time image information;
the linkage module is used for linking and matching nearby fire fighting equipment to extinguish fire when the processor judges that a fire exists in the coverage area of the video monitoring equipment according to the alarm information or the third judgment module, and performing linkage fire extinguishing through a cable channel environment which is real in video monitoring reaction to avoid misjudgment;
the early warning device also comprises a counting module which is used for counting the continuous occurrence times and early warning positions of the first early warning information within a set time threshold;
the fourth judgment module is used for judging the continuous occurrence frequency of the first early warning information in the set time threshold and the size of the set early warning frequency threshold; when the fourth judging module judges that the continuous occurrence frequency of the early warning information in the set time threshold is not less than the set early warning frequency threshold, the typical hidden danger characteristic of the fire disaster in the cable channel is judged;
the fifth judgment module is used for judging whether personnel exist in the cable channel according to the real-time image information of the cable channel; if the personnel are in the cable channel, the processor firstly sends evacuation information to evacuate the personnel, then controls to close a fireproof door of the cable channel, and simultaneously carries out air exhaust and temperature reduction on the early warning position; if no personnel are in the cable channel, the processor controls the fireproof door for closing the cable channel, and meanwhile, the early warning position is ventilated and cooled.
8. The early fire warning device of claim 7, wherein the warning thresholds and warning thresholds of the temperature measuring points of the infrared temperature measuring area, the cable A phase, the cable B phase and the cable C phase set by the threshold setting module are 65 ℃ and 90 ℃ respectively.
9. The early fire warning device for cable channel according to claim 7, wherein the warning thresholds and the warning thresholds of the CO concentration detection device and the flue gas concentration detection device are respectively 5 mg/m 3 And 20 mg/m 3 。
10. The early fire warning device for cable channels of claim 7, wherein the early fire warning device comprises a first sensor for detecting the presence of fire in the cable channel and a second sensor for detecting the presence of fire in the cable channelIn that the CO is 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 850ppm and 1500ppm.
11. The cable channel early fire warning device of claim 7, wherein the O is a carbon dioxide 2 The early warning threshold value and the warning threshold value of the concentration detection device are respectively 19.5% of volume and 18% of volume.
12. A cable channel early fire early warning and monitoring platform is characterized in that the early warning and monitoring platform is constructed based on BIM/GIS integration and comprises a platform display center, a 3D cable tunnel, a GIS positioning module and a cable channel early fire early warning device according to any one of claims 7 to 11; the 3D cable tunnel, the GIS positioning module and the cable channel early fire warning device are respectively connected to a platform display center in an Internet of things communication manner;
the platform display center obtains temperature measurement data, CO concentration detection data and CO of the infrared temperature measurement area according to the positioning data of the GIS positioning module and the early fire warning device of the cable channel 2 Concentration detection data, O 2 And the concentration detection data, the smoke concentration detection data, the cable A-phase temperature measurement data, the cable B-phase temperature measurement data and the cable C-phase temperature measurement data are visually analyzed, so that the early warning monitoring platform can display data in real time, analyze situations and backtrack history.
13. A storage medium containing computer executable instructions which when executed by a computer processor are operable to perform the cable channel early fire warning method of any of claims 1 to 6.
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Effective date of registration: 20230912 Address after: No. 1, Jiangning District, Jiangning District, Nanjing, Jiangsu Patentee after: STATE GRID JIANGSU ELECTRIC POWER COMPANY Research Institute Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. Patentee after: JIANGSU ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Address before: No. 1, Jiangning District, Jiangning District, Nanjing, Jiangsu Patentee before: STATE GRID JIANGSU ELECTRIC POWER COMPANY Research Institute Patentee before: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. Patentee before: JIANGSU ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Patentee before: Nanjing Abas Information Technology Co.,Ltd. |