CN109243129A - Fire detecting system judges whether cable occurs the method for fire - Google Patents
Fire detecting system judges whether cable occurs the method for fire Download PDFInfo
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- CN109243129A CN109243129A CN201811043051.7A CN201811043051A CN109243129A CN 109243129 A CN109243129 A CN 109243129A CN 201811043051 A CN201811043051 A CN 201811043051A CN 109243129 A CN109243129 A CN 109243129A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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Abstract
本发明公开火灾探测系统判断电缆是否发生火灾的方法，系统包括点型感烟探测器及感温探测器，线型光束感烟探测器，吸气式感烟火灾探测器，缆式线型感温探测器及多点型温度探测器，就地模块，第一、二站控层交换机，摄像机，交换机和电缆火灾监控预警系统服务器；方法包括1读取火灾探头个数；2设置巡检初值；3发射火灾探测器地址信号；4判断电缆有无火灾，是执行5，否执行6；5调用火警处理子系统并执行8；6判断是否有故障，是执行7，否执行8；7调用故障处理子系统并执行8；8探测器是否巡检完，是结束，否执行3。本发明可实时判断出火灾现场电缆是否发生火灾，并及时做出灭火、报警和疏散动作，以降低火灾事故中的危害和经济损失。
The invention discloses a method for judging whether a fire occurs in a cable by a fire detection system. The system includes a point-type smoke detector and a temperature detector, a line-type beam smoke detector, an inhalation-type smoke detector, and a cable-type linear detector. Temperature detectors and multi-point temperature detectors, local modules, first and second station control layer switches, cameras, switches and cable fire monitoring and early warning system servers; methods include 1 reading the number of fire detectors; 2 setting the initial inspection value; 3 transmits the address signal of the fire detector; 4 judges whether there is a fire in the cable, execute 5 if yes, execute 6 if no; 5 call the fire alarm processing subsystem and execute 8; 6 judge whether there is a fault, execute 7 if yes, execute 8 if no; 7 Call the fault handling subsystem and execute 8; 8 Whether the inspection of the detector is completed, if yes, end, if not, execute 3. The invention can judge in real time whether a fire has occurred in the cable at the fire site, and make fire extinguishing, alarming and evacuation actions in time, so as to reduce the harm and economic loss in the fire accident.
Description
Technical field
Judge whether cable occurs the method for fire the present invention relates to fire detecting system.
Background technique
In modern society, wire and cable is indispensable as conveying electric energy, transmitting information and the various electrical equipments of manufacture
Basic product occupies an important position in national economy.China is that world's second largest countries producing electric wires and cables (are only second to beauty
State), there are 300 Duo Jia electric wire and cable material manufacturing enterprises, nearly 4000 cable manufacturing enterprises, the domestic market Service Efficiency of product reaches
90% or more.
Cable insulate, with covering for high-insulation generally by several or several groups of wire strandings form between conducting wire and conducting wire
Cap rock is wrapped in outer.Cable can communicate, electric power and associated transport.Boundary between " cable " and " electric wire " is not very
Strictly.General diameter, core number are less, the simple product of structure is known as electric wire, the referred to as bare wire not insulated with restrictive coating,
It is remaining to be known as cable.So far oneself has over one hundred year history for the use of cable, is originally used to transmit electric energy, later with the hair of information technology
Opening up cable also becomes essential transportation means in the communications industry, and cable is developing along with the development of electric power, the communication technology
's.
Wire and cable is generally divided into five classes: (1) bare wire according to purpose classification, (2) power cable, (3) winding wire,
(4) electric cable for electric equipment, (5) communication cable and optical cable.
In cable, conductor as core component be it is particularly important, which dictates that the performance that cable is most basic, but it is another
Outer two kinds of structures --- insulation and sheath are also comparable important, and characteristic is to determine the important references of cable applicable elements, range,
So this two-part material is also extremely fastidious.Glass, silk, mica from early stage etc. are various by now as insulating materials
High polymer material, the nonmetallic materials of cable also experienced development at full speed.Rubber is the various wire cable insulatings of manufacture and shield
The important materials of set not only have extremely superior elasticity, flexibility, mutability and restoration, and there are also outstanding to resist
Zhang Qiangdu, tear resistance, fatigue resistance, electrical insulation capability, this is all essential as good cable material.Although
Rubber has had very long history as the material of cable, and people also constantly have developed new material, but its still by
It is extensive to use.
Other than being applicable in rubber, the material of wire and cable further includes various resins and plastics, mainly due to plastics specific gravity
Small, good mechanical property, electrical insulating property be excellent and chemical stability, water-fast, oil resistant, processing and forming are convenient and abundant raw materials, because
, into decades, cable in plastics cable at home and abroad develops very rapidly for this.
Cable material used in wires and cables industry mainly has at present: polyvinyl chloride insulation, sheath material, elastic polychlorostyrene
Ethylene sheath material, thermoplastics type's low smoke halogen-free flame-retardant polyolefin, irradiation cross-linking flame-retardant polyolefin, organosilane crosslinked polyethylene, 110kV
The above ultra-clean processes for chemically crosslinked polyethylene high-tension cable, 35kV and following cross-linked polyethylene insulated cable material partly lead inner shield material
Material, semi-conductive shielding material, high density polyolefin insulating materials, natural butadiene-styrene rubber, EP rubbers, neoprene, butyronitrile rubber
Glue electric wire and cable material product.It is still mainly rubber and plastics two major classes, wherein plastic product dosage accounts for although various types
The 65% of total amount, and with the development of special trade, the requirement for cable performance is more and more diversified, rubber plastic blend technology
Application it is very extensive.Additionally, due to the demands such as fire-retardant, more and more additives joined cable material, occur very much
Fire-resistant cable material.
Cable fire continues multiple in China.According to statistics, 2008 because of wire short-circuiting, overload and electrical equipment malfunction etc.
Fire caused by electric appliance reason totally 4 ten thousand, account for the 29.7% of fire sum.2009 because of wire and cable short circuit, overload and electricity
Fire caused by the electric appliances reason such as gas equipment fault totally 39102, the 30.2% of fire sum is accounted for, in 64 larger above fire
In, there are 33 to account for 35.8% for electrical cause.Draw because of the electric appliances reason such as wire short-circuiting, overload and electrical equipment malfunction within 2010
Fire totally 41237 risen account for the 31.3% of fire sum, in 81 larger above fire, have 29 to draw for cable reason
That rises accounts for 35.8%.
The reason of cable fire occurs is to sum up there is two classes: cable failure itself causes ignition of cable, Exterior cable
Fiery shot-firing cable leads to fire.One kind fire accounts for 1/3 or so of entire Cable Firing Accident before data is shown, concrete reason packet
Include: the protection insulator of cable is mechanically damaged to be caused phase insulation breakdown arc and burns；Cable connector processing technology is not
It meets the requirements, cable box insulant quality is insufficient, poor sealing immerses moisture and cable cover(ing) and insulation overheats hair for a long time
Raw aging, breakdown insulating materials are so as to cause short-circuit fire；Cable insulation material will lead to the insulation of cable in long term overloading
Many places breakdown kindling occurs for performance decline；Cabling causes insulation performance to reduce cable short-circuit fire under severe conditions；It fills
Oily cable oil leak kindling；End surface wetting or corrosion cause punch through on fire.Electricity caused by Exterior cable kindling shot-firing cable
Cable cause of fire is main are as follows: coal dust deposition involves cable by roasting combustion or involuntary ignition；Steam turbine, boiler oil (fuel oil, lubricating oil
Deng) kindling, sprawling cause ignition of cable；Explosion of Coal Pulverizing System brings disaster to ignition of cable；Electroslag welding spark falls into and cable ignites；Electricity
Gas equipment fault is on fire to lead to ignition of cable etc..It can be seen that cable is ignited by external fire source, will to will lead to fire further climing
Prolong expansion, while cable channel laying is hidden, what is be attached thereto is mostly important place, and often cable is ignited often in pipeline
Generate bigger harm and more serious economic loss.
Summary of the invention
The technical problem to be solved by the present invention is providing fire detecting system judges whether cable occurs the method for fire,
Fire whether occurs by real-time judge scene of fire cable and makes respective handling, to reduce harm and the warp in fire incident
Ji loss.
To achieve the above object, The technical solution adopted by the invention is as follows:
Fire detecting system judges whether cable occurs the method for fire, and the fire detecting system includes:
Smoke point detector and point heat detector, the smoke point detector and the point heat detector
It is installed on inside cable ditch；
Line style light beam smoke detector, the line style light beam smoke detector are installed on outdoor cable ditch；
Air suction type smoke fire detector, the air suction type smoke fire detector are installed in cable shaft；
Cable type linear temperature-sensitive detector, the cable type linear temperature-sensitive detector are installed on power cable；
Cable formula multipoint type hygrosensor, the cable formula multipoint type hygrosensor are installed on cable termination；
Module on the spot, the smoke point detector, the point heat detector, the line style light beam smoke detector
Pass through two lines bus respectively with the cable type linear temperature-sensitive detector to connect with the module on the spot, the air suction type smoke is visited
It surveys device and the cable formula multipoint type hygrosensor passes through RS485 bus respectively and connect with the module on the spot；
First stop control layer switch, the module on the spot are connect by fiber optic network with the first stop control layer switch；
Visible light camera, the visible light camera are installed in channel；
Interchanger, the interchanger are connect by Ethernet with the visible light camera；
Second station control layer switch, the interchanger are connect by fiber optic network with the second station control layer switch；
Cable fire monitoring early-warning system server, the first stop control layer switch and the second station control layer switch
It is connect respectively by Ethernet with the cable fire monitoring early-warning system server；
It the described method comprises the following steps:
S1: fire probe number is read；
S2: setting inspection initial value；
S3: transmitting fire detector address signal；
S4: judging cable, whether there is or not fire, are to then follow the steps S5, no, then follow the steps S6；
S5: it calls fire alarm processing subsystem and executes step S8；
S6: judging whether faulty, is to then follow the steps S7, no, thens follow the steps S8；
S7: it calls troubleshooting subsystem and executes step S8；
S8: whether inspection is complete for detector, is then to terminate, no, thens follow the steps S3.
Further, the fire detecting system further include:
Dry powder extinguishing installation, the dry powder extinguishing installation are respectively arranged in cable shaft, and the dry powder extinguishing installation is logical
RS485 bus is crossed to connect with the module on the spot.
Further, the dry powder extinguishing installation is fixed dry powder can fire extinguisher.
Further, fire alarm processing subsystem described in step S5 includes the synchronous fire extinguishing carried out, alarm and evacuation three
Step.
Specifically, the fire extinguishing includes being gone out using fixed dry powder can fire extinguisher and the power-off of cable duct power cable
Fire.
Specifically, the alarm includes dialing 119 Fire telephones to notify fire-fighting group, dial working telephone to notify
It operator on duty and is alarmed by broadcasting alarm in standing.
Specifically, the evacuation includes that broadcast is dredged, artificial organ is dredged and indicating lamp for emergency is dredged in station.
Compared with prior art, the invention has the following advantages:
Fire detecting system structure of the present invention is simple, design is scientific and reasonable, easy to use, for the varying environment of cable,
Indoors cable duct installation smoke point detector and point heat detector, cable duct installation line style light beam sense cigarette spy outdoors
Survey device, cable shaft install air suction type smoke fire detector, on power cable install cable type linear temperature-sensitive detector,
Cable termination installs cable formula multipoint type hygrosensor, realizes that the fire of different zones is supervised by polymorphic type fire detection technology
Control.Visible light camera is installed in channel, system, which can be realized, can not make an inspection tour region, such as oil-filled equipment area cable duct to daily
Effective monitoring of closed area.When system operates normally, fire detector can obtain cigarette, temperature and the environment letter in monitoring region
Breath, and made a response in real time according to environmental information.When fire dangerous situation occurs for area to be monitored, warning window can be actively popped up.
Fire detecting system of the present invention judges whether cable occurs the software program of fire method and start to start, before this will be fiery
Calamity detection control system initializes comprehensively, then is to detect how many fire detector probe, last set program inspection instruction
Primary data, emit the address signal of fire detector, the data information of fire detector collected, using multi-sensor data
Blending algorithm carrys out the probability of operation fire generation, determines whether cable has fire, if fire detecting system judges cable
Fire has occurred, then fire detecting system will independently recall fire function code；If fire detecting system determines cable
On there is no fire behavior, system component will be carried out detection look at whether faulty generation, if component breaks down,
So system will recall troubleshooting code, to determine whether the inspection instruction of fire detector has executed.It is instructed in inspection
When being not carried out, the address signal and monitoring data of system meeting persistent collection fire detector, when whole system is completed to fire
When fire detector inspection instruction, the software program of fire detection equipment will terminate to execute.
Detailed description of the invention
Fig. 1 is fire detecting system structural schematic diagram of the present invention.
Fig. 2 is the method for the present invention flow chart.
Fig. 3 is fire alarm processing subroutine flow chart in the method for the present invention.
Fig. 4 is individual field devices figure in present example.
Fig. 5 is experiment scene design drawing in present example.
Fig. 6 is cable fire scene scene photo in present example.
Specific embodiment
The invention will be further described with embodiment for explanation with reference to the accompanying drawing, and mode of the invention includes but not only limits
In following embodiment.
As shown in Figure 1, fire detecting system provided by the invention judges whether cable occurs the method for fire, the fire
Detection system includes:
Smoke point detector and point heat detector, the smoke point detector and the point heat detector
It is installed on inside cable ditch；
Line style light beam smoke detector, the line style light beam smoke detector are installed on outdoor cable ditch；
Air suction type smoke fire detector, the air suction type smoke fire detector are installed in cable shaft；
Cable type linear temperature-sensitive detector, the cable type linear temperature-sensitive detector are installed on power cable；
Cable formula multipoint type hygrosensor, the cable formula multipoint type hygrosensor are installed on cable termination；
Module on the spot, the smoke point detector, the point heat detector, the line style light beam smoke detector
Pass through two lines bus respectively with the cable type linear temperature-sensitive detector to connect with the module on the spot, the air suction type smoke is visited
It surveys device and the cable formula multipoint type hygrosensor passes through RS485 bus respectively and connect with the module on the spot；
First stop control layer switch, the module on the spot are connect by fiber optic network with the first stop control layer switch；
Visible light camera, the visible light camera are installed in channel；
Interchanger, the interchanger are connect by Ethernet with the visible light camera；
Second station control layer switch, the interchanger are connect by fiber optic network with the second station control layer switch；
Cable fire monitoring early-warning system server, the first stop control layer switch and the second station control layer switch
It is connect respectively by Ethernet with the cable fire monitoring early-warning system server；
The fire detecting system further include:
Dry powder extinguishing installation, the dry powder extinguishing installation are respectively arranged in cable shaft, and the dry powder extinguishing installation is logical
It crosses RS485 bus to connect with the module on the spot, the dry powder extinguishing installation is fixed dry powder can fire extinguisher.
Fire detecting system structure of the present invention is simple, design is scientific and reasonable, easy to use, for the varying environment of cable,
Indoors cable duct installation smoke point detector and point heat detector, cable duct installation line style light beam sense cigarette spy outdoors
Survey device, cable shaft install air suction type smoke fire detector, on power cable install cable type linear temperature-sensitive detector,
Cable termination installs cable formula multipoint type hygrosensor, realizes that the fire of different zones is supervised by polymorphic type fire detection technology
Control.Visible light camera is installed in channel, system, which can be realized, can not make an inspection tour region, such as oil-filled equipment area cable duct to daily
Effective monitoring of closed area.When system operates normally, fire detector can obtain cigarette, temperature and the environment letter in monitoring region
Breath, and made a response in real time according to environmental information.When fire dangerous situation occurs for area to be monitored, warning window can be actively popped up.
As shown in Figures 2 and 3, the method that fire detecting system of the present invention judges whether cable occurs fire includes following step
It is rapid:
S1: fire probe number is read；
S2: setting inspection initial value；
S3: transmitting fire detector address signal；
S4: judging cable, whether there is or not fire, are to then follow the steps S5, no, then follow the steps S6；
S5: it calls fire alarm processing subsystem and executes step S8；
S6: judging whether faulty, is to then follow the steps S7, no, thens follow the steps S8；
S7: it calls troubleshooting subsystem and executes step S8；
S8: whether inspection is complete for detector, is then to terminate, no, thens follow the steps S3.
When fire detecting system, which receives multiple physical quantitys, is judged to occurring fire, system calls fire alarm processing automatically
Program, fire alarm processing subsystem described in step S5 of the present invention include three the synchronous fire extinguishing carried out, alarm and evacuation steps, institute
Stating fire extinguishing includes being put out a fire using fixed dry powder can fire extinguisher and the power-off of cable duct power cable, and the alarm includes dialing
119 Fire telephones with notify fire-fighting group, dial working telephone with notify to stand interior operator on duty and by broadcast alarm carry out
Alarm, the evacuation include that broadcast is dredged, artificial organ is dredged and indicating lamp for emergency is dredged in station.
Fire detecting system of the present invention judges whether cable occurs the software program of the method for fire and start to start, and before this will
Fire detection control system initializes comprehensively, then is to detect how many fire detector probe, and last set program inspection refers to
The primary data of order emits the address signal of fire detector, collects the data information of fire detector, using multisensor number
Carry out the probability of operation fire generation according to blending algorithm, determine whether cable has fire, if fire detecting system judgement electricity
Fire has occurred in cable, then fire detecting system will independently recall fire function code；If fire detecting system determines electricity
There is no fire behavior on cable, system component will be carried out detection look at whether faulty generation, if component occur therefore
Barrier, then system will recall troubleshooting code, to determine whether the inspection instruction of fire detector has executed.Refer in inspection
When order has been not carried out, the address signal and monitoring data of system meeting persistent collection fire detector, when whole system completion pair
When fire detector inspection instruction, the software program of fire detection equipment will terminate to execute.
In the present invention with Multisensor Data Fusion Algorithm come operation fire probability method the following steps are included:
Step 1: sensing data is successively initialized, denoised and is normalized, specifically:
In formula, AjIndicate that the output valve of sensor passes through normalized result；xjIndicate j-th of output data of sensor；
LIjIndicate normalized threshold value, when j-th of output data as in fire prediction is greater than threshold value, normalization result is 1；FMj
It indicates benchmark thresholding, is normalized amplitude limit value；K is environmental correction offset；
Step 2: characteristic layer initialization chooses random input weight β and output target T, forms input matrix H, then
Input the expression formula of weight β are as follows:
β=H*T formula two；
Step 3: feature layer data batch processing carries out the iteration of weight, K is output matrix, specifically after initialization
Are as follows:
Step 4: the input of Decision-level fusion is characterized the output of layer, and algorithm is synthesized by the following way and carries out final judgement,
Specifically:
M in formula1And m2Data are determined for two sensor outputs；X and Y indicates input sample, and Z indicates output sample；
Step 5: if fusion results are greater than given threshold, i.e., fire, alarm occur for judgement；Otherwise, step 1-4 is repeated.
In order to make those skilled in the art of the present technique better understood when technical solution of the present invention, now provide real
Example is further elaborated.
Experiment content.
The main operational principle of more physical quantity fusion fire detecting systems is fire of the fire detection sensor to scene of fire
The fire characteristics amount such as flame, flue gas, temperature is monitored in real time.When that fire dangerous situation will occur, alarm signal, alarm signal are generated
Number module on the spot will be given in data by two lines bus/485 modes, arranged, after processing by module on the spot, upload to back-end system
Platform carries out operation, displaying, alarm etc..
The existing and mature fire early-warning system for being possibly used for cable duct is main according to its detection principle on Vehicles Collected from Market
There are point heat detector, smoke point detector, cable type linear temperature-sensitive detector, aspirating smoke detector and purple
Outer flame detector.This test mainly tests a plurality of types of fire detectors to fire caused by cable duct inner cable short circuit
The monitoring capacity of (glowing, open fire).
Experimental facilities and material.
This experiment is tested in discarded cable duct, to ensure to test scene close to natural fire scene, cable duct without
Energization cable, and have 4 bottles of hand fire extinguishers, it is ensured that the safety of test.
Fire detector includes: point heat detector, smoke point detector, cable type linear temperature-sensitive detector, air-breathing
Formula smoke detector, a variety of fire alarm installations of red ultraviolet flame detector and powder extinguishing system.Each device context figure is such as
Shown in Fig. 4.
To complete this experiment, also need to prepare other auxiliary materials, specific quantity and parameter are referring to table 1
1 experimental facilities of table and material
Experiment scene design.
As shown in figure 5, test cable ditch section total length 50m, is used as fire source in cable duct at left port 10m
Point carries out fire test.Cable fire scene scene is as shown in Figure 6.It is different according to the installation of fire-alarm working method difference
The fire-alarm of type.Specific mounting means is as follows:
(1) apart from ignition location every 10m arrange one group of detector (include point-type sense cigarette, point heat detector, totally three
Group), line arrangement dual threshold cable type linear temperature-sensitive detector (85 DEG C and 105 DEG C of alarm threshold value, 50 meters), line arrangement air suction type
Smoke detector (uses pvc pipe gas production), arranges red ultraviolet flame detector (end use).Superfine dry powder fire-distinguishing system installation
At the top of cable duct, at the fiery point 5m of distance.
(2) the cable duct other end places camera, observes fire dynamic in cable duct.
(3) experiment is placed on cable duct foot prop with cable, apart from bottom of trench 50mm；Or experiment cable is placed on cable duct
Foot prop middle layer, to simulate true cable duct environment.
(4) can sprinkle water humidification in cable duct, dummycable ditch environment.
(5) fire source is using cable short circuit and open fire two ways.
Experimentation and record.
Cable short circuit is glowed experiment
After monitoring device and fire-extinguishing apparatus are installed, short-circuit heating, simulation electricity are carried out to cable using battery first
Cable generates high temperature, records detector reaction result.Temperature sensing cable is wrapped up using 8 section 4mm routine aluminium cables, connects power supply,
Fire early-warning system corresponding situation when observation short circuit causes cable to glow, heat up operating condition after dummycable short circuit.Test cable cloth
It sets in cable duct side wall, at cable duct bottom of trench 400mm.
Video monitoring system is watched in field observation experiment at module on the spot.Glowing is a kind of form of solid combustion, is
Smoulder without visible light generally produces phenomena such as cigarette and temperature rise, and the difference of it and flaming combustion is no flame.
Under the conditions of glowing, the module that can trigger fire alarm system is:
A. cable type linear temperature-sensitive detector (beginning to warm up rear 180s, detector information is read on backstage)
B. aspirating smoke detector (beginning to warm up rear 480s, detector information is read on backstage)
C. smoke point detector (beginning to warm up rear 780s, detector information is read on backstage).
D. point heat detector (the unread detector information in backstage)
E. red ultraviolet flame detector (the unread detector information in backstage)
Fire detecting system calls fault routine in 180s；Fire alarm subprogram is called when 480s, judges fire behavior；
The alert in 780s, while the powder extinguishing system that links complete extinguishing action.
The experiment of cable open fire
It is ignited using alcohol to cable, cable open fire occurs, record the response time of different fire detectors.With 8
The binding of root section 4mm routine aluminium cable, uses direct 50mm oil tray as fuel carrier, uses industrial alcohol (purity 99%)
It ignites, monitoring system when open fire fire occurs for observation cable duct.Cable arrangements are tested in cable duct bottom end.
Video monitoring system is observed in field observation experiment at module on the spot.Under open fire Fire Conditions, fire can trigger
The module of alarm system is:
A. cable type linear temperature-sensitive detector (40s reads detector information in backstage)；
B. red ultraviolet flame detector (80s reads detector information in backstage)；
C. aspirating smoke detector (100s reads detector information in backstage)；
D. smoke point detector (the unread detector information in backstage)；
E. point heat detector (the unread detector information in backstage).
Fire detecting system calls fault routine in 40s；Fire alarm subprogram is called when 80s, judges fire behavior；?
Alert when 100s, while the powder extinguishing system that links complete extinguishing action.
Experimental result
By this cable duct fire detection experiment (glow experiment three times, open fire experiment three times) obtained data enter table
Shown in 2:
More than 2 physical quantitys of table merge fire monitoring system experimental result
It can be concluded that, more physical quantity fusion cable fire-proof monitoring systems can effectively judge fire behavior, according to difference from table
The feedback signal progress fire alarm advance notice of period, different number detector.Later, fire data can also be saved.Together
When fire data may be updated feature layer data, keep fire prediction more accurate.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit protection model of the invention
It encloses, as long as that in body design thought of the invention and mentally makes has no the change of essential meaning or polishing, is solved
The technical issues of it is still consistent with the present invention, should all be included within protection scope of the present invention.
Claims (7)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335436A (en) * | 2019-07-02 | 2019-10-15 | 国网陕西省电力公司 | A substation cable fire monitoring system and method thereof |
| CN111437545A (en) * | 2020-03-25 | 2020-07-24 | 深圳中电科瑞电力自动化有限公司 | Cable fire extinguishing method, apparatus, device and computer readable storage medium |
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