CN101832990A - Movable on-line type fire situation grade detecting and evaluating system and method - Google Patents
Movable on-line type fire situation grade detecting and evaluating system and method Download PDFInfo
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Abstract
The embodiment of the invention provides a movable on-line type fire situation grade detecting and evaluating system. The system comprises a back pressure type detecting device, a wireless transmission trunk device and a fire situation evaluating device, wherein the back pressure type detecting device is used for collecting and transmitting information of the fire scene; the wireless transmission trunk device is used for receiving and transferring the information of the fire scene; and the fire situation evaluating device is used for evaluating the fire situation grade through identifying the change of gas concentration according to the information of the fire scene. The embodiment of the invention also provides a movable on-line type fire situation grade detecting and evaluating method. The method comprises the following steps of: collecting and transmitting the information of the fire scene; receiving and transferring the information of the fire scene; according to the received information of fire scene, evaluating the fire situation grade through identifying the change of gas concentration. By predicting the oxygen concentration and the danger of toxic and harmful gas concentration in the fire scene, the developing trend of the fire is identified according to the change of the gas concentration.
Description
Technical field
The present invention relates to the security against fire detection range, particularly, the present invention relates to a kind of movable on-line type fire situation grade detecting and evaluating system and method.
Background technology
When the breaking out of fire of place such as complicated building interior, danger product production storage; the leakage situation of fully grasping scene of a fire intensity of a fire state of development and dangerization product has very important significance to rescue work of extinguishing fire; not only can assist the commanding to make correct decision-making; guide rescue carries out smoothly, also can ensure the life security of firefighters simultaneously.In present actual fire fighting and rescue fight, normal employing sends the scout to enter the tactics that intensity of a fire scouting is carried out in the scene of a fire earlier.Yet, can't quantize the essential information in the scene of a fire only according to scout's naked eyes, be difficult to make accurately and judge, the observed information of scout also is difficult to send in real time the commander of outside simultaneously.
Existing scene of a fire detector comprises by the backpack detector, and its fundamental purpose is to guarantee the personal safety of fire fighter when finishing work such as scene of a fire dangerous situation detection, dangerous goods eliminating.But this detector does not possess the function that quantification is scouted and information transmits.In addition.Also include intelligent fire scene detecting device, this sniffer can not enter the people and gathers the basic document of scene of fire under the situation of scene of fire and transfer to outside the scene of fire by wireless communication mode, but this device does not possess obstacle detouring and climbing ability, be difficult to enter the inside of complicated building, this device does not possess the analysis ability of fire situation grade yet simultaneously.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, measure in real time at some key parameters of scene of fire especially and gather and transmission, and set up fire situation fast evaluation method on this basis, for the work of fire fighting and rescue floor manager provides decision-making foundation, a kind of movable on-line type fire situation grade detecting and evaluating system and method have been proposed.
For achieving the above object, an aspect of embodiments of the invention has proposed a kind of moving online fire situation grade detecting and evaluating system, comprises backpack sniffer, wireless transmission trunk device and fire situation apparatus for evaluating,
Described backpack sniffer is used to gather and transmit the information of scene of fire, comprises acquisition module, gathers main frame and wireless transport module;
Described wireless transmission trunk device is used to receive and transmit the information from the scene of fire of described backpack sniffer, comprises one or more modulator-demodular unit;
Described fire situation apparatus for evaluating, be used for the information of basis from the scene of fire of described wireless transmission trunk device, by the variation identification to gas concentration, assessment fire situation grade comprises wireless receiving module, image processing module and fire situation evaluation module.
The embodiment of the invention a kind of movable on-line type fire situation grade detecting appraisal procedure proposed on the other hand, comprise the steps:
Gather and transmit the information of scene of fire, described scene of fire information comprises gas concentration data, view data and fire scene temperature data;
By wireless transmission trunk, receive and transmit the information at scene, the scene of a fire;
According to the information of the scene of fire that receives, by variation identification to gas concentration, assessment fire situation grade.
System and method according to the embodiment of the invention, can be in time the essential information of inside, the scene of a fire be transferred to outside, the scene of a fire by the radio transmission mode, and the oxygen concentration of inside, the scene of a fire, the danger of toxic and harmful concentration provided anticipation, by gas concentration being changed identification fire development trend.The field apparatus volume is little, and is in light weight, is convenient to the individual soldier and carries, and moves flexibly.Data transmission adopts the DSSS technology, and antijamming capability is strong.Adopt wireless relay in the transmission course, guarantee the stability of signal transmission and accurately fixed.
The such scheme that the present invention proposes, very little to the change of existing system, can not influence the compatibility of system, and realize simple, efficient.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the structured flowchart according to the movable on-line type fire situation grade detecting and evaluating system of the embodiment of the invention;
Fig. 2 is according to the backpack sniffer of the embodiment of the invention and the synoptic diagram of wireless transmission trunk device;
Fig. 3 is the synoptic diagram according to the fire situation apparatus for evaluating of the embodiment of the invention;
Fig. 4 is the FB(flow block) according to the movable on-line type fire situation grade detecting appraisal procedure of the embodiment of the invention;
Fig. 5 is the movable on-line type fire situation grade detecting and evaluating system work synoptic diagram according to the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the present invention, and can not be interpreted as limitation of the present invention.
For realizing the present invention's purpose, the embodiment of the invention discloses a kind of movable on-line type fire situation grade detecting and evaluating system, in conjunction with shown in Figure 1, this system 100 comprises backpack sniffer 110, wireless transmission trunk device 120 and fire situation apparatus for evaluating 130.
Specifically, backpack sniffer 110 is used to gather and transmit the information of scene of fire, comprises acquisition module, gathers main frame and wireless transport module.
Wherein acquisition module comprises again: Temperature sampler, gas collecting device and image acquisition device.In conjunction with shown in Figure 2, Temperature sampler 1 is used to gather fire scene temperature.Specifically, Temperature sampler 1 is gathered the temperature in the scene of a fire by temperature sensor.
The gas collecting device is integrated multiple gases sensor can detect O
2, CO, CO
2, H
2S, SO
2, HCL, NH
3,, NO
x, HCN, the concentration of gas ingredients such as hydrogen cyanide, volatile organic compounds VOC, inflammable gas LEL.The gas collecting device comprises gas sample tube 2 and gas samping pump 3.Gas sampler is gathered the gas concentration in the scene of a fire by gas samping pump 3 driving gas sampling pipes 2.
In addition, acquisition module comprises that also image acquisition device 4 is used for gathering the image of scene of fire.Wherein image acquisition device 4 is made up of a far-end camera and a LCD display.LCD display is integrated in gathers on the main frame, is easy to carry and safeguards.The far-end camera can be installed on scout's the working cap.
In conjunction with shown in Figure 2, gather main frame 4 and comprise accumulator and dipole antenna, be used to acquisition module and wireless transport module that energy is provided.Gather main frame 4 integrated a high-capacity direct current accumulator and a half-wavelength dipole antenna, and have audio interface, for acquisition module and transport module provide the energy to guarantee.Wherein, audio interface is used for scout and extraneous liaison.Gather main frame 4 and link to each other, can provide energy to above-mentioned device with Temperature sampler 1, gas collecting pump 3, image acquisition device 4, microwave signal transmitter 7.
Wireless transport module comprises microwave signal transmitter 7, is used for the data that acquisition module collects are warmd oneself in front of a fire outside the venue sending.Microwave signal transmitter 7 adopts the microwave communication mode, selects to possess the modulator-demodular unit of DSSS (DirectSequence Spread Spectrum, direct sequence spread spectrum) technology.Antenna 8 is installed above microwave signal transmitter 7, and antenna 8 is used for communicating with the external world.Gather main frame 5 and link to each other with microwave signal transmitter 7 respectively, be used for providing energy to microwave signal transmitter 7 with direct supply 6.
In addition, backpack sniffer 110 comprises direct supply 6, is used for each device energy supply to backpack sniffer 110.Backpack sniffer 110 also comprises display screen 9, and display screen 9 is used to show the image at fire failure scene and the data that collect by acquisition module.
Movable on-line type fire situation grade detecting and evaluating system also comprises wireless transmission trunk device 120, be used to receive and come and transmit information, comprise the fire scene temperature information that collects by Temperature sampler, gas concentration information that the gas collecting device collects and the image information in the scene of a fire that collects by image acquisition device from the scene of fire of backpack sniffer 110.Wireless transmission trunk device 120 can comprise one or more modulator-demodular unit, be placed on positions such as windowsill flexibly, possess the function of near other modulator-demodular units of automatic search and automatic network-building, solve the distance limit of microwave transmission and the shielding of construction wall.
Fire situation apparatus for evaluating 130 comprises wireless receiving module, image processing module and fire situation evaluation module, according to information from the scene of fire of wireless transmission trunk device 120, and by variation identification to gas concentration, assessment fire situation grade.
Specifically, wireless receiving module, be used to receive scene of a fire information, comprise the fire scene temperature information that collects by Temperature sampler, gas concentration information that the gas collecting device collects and the image information in the scene of a fire that collects by image acquisition device from wireless transmission trunk device 120.In the present embodiment, wireless receiving module adopts the microwave communication mode, receives information from the scene of a fire by the microwave communication mode.
Fire situation apparatus for evaluating 130 also comprises image processing module and fire situation evaluation module.Wherein image processing module is used to show the image at fire failure scene, can connect, switch on-the-spot different image acquisition device, even show the image at current fire failure scene.
In addition, fire situation evaluation module is used for the variation identification by gas concentration, assessment fire situation grade.Fire risk grade decision method comprises that oxygen concentration is differentiated, toxic and harmful concentration is differentiated and intensity of a fire state of development is differentiated.
Specifically, the oxygen concentration discrimination standard is that oxygen volume content risk factor is divided, and is as shown in table 1.The oxygen concentration COEFFICIENT K
OxygenComputing method be
Table 1
As shown in table 1, in the scene of a fire, O
2Volume content be 21% o'clock, fire risk is in safe class; O
2Volume content be lower than 18%, fire risk is in advanced warning grade; O
2Volume content be lower than at 15% o'clock, fire risk is in danger classes.
The differentiation of toxic and harmful concentration comprises that single toxic and harmful concentration is differentiated and multiple toxic and harmful is differentiated.Single toxic and harmful " safety ", " early warning ", " danger " concentration value are as shown in table 2, wherein N
sBe safe concentration value, N
aBe early warning concentration value, N
dBe the dangerous concentrations value.
Table 2
Wherein, single toxic and harmful danger coefficient k
iComputing method:
Multiple toxic and harmful danger coefficient K computing method:
k
Poison=∑ k
i(3)
In conjunction with oxygen concentration and toxic and harmful concentration, scene of a fire gas danger classes is divided into 6 grades, as shown in table 3.
Table 3 scene of a fire gas danger classes is divided
| ? | K oxygen≤0.5 | 0.5≤K oxygen≤0.8 | K oxygen 〉=0.8 |
| K poison≤0.5 | Safety | Safer | Dangerous |
| 0.5≤K poison≤0.8 | Safer | Generally | Dangerous |
| K poison 〉=0.8 | Dangerous | Dangerous | Be in extreme danger |
Specifically, work as K
Oxygen≤ 0.5 and K
Poison≤ 0.5 o'clock, fire situation evaluation module judged that this moment, fire situation was in safe class;
Work as K
Oxygen≤ 0.5 and 0.5≤K
Poison≤ 0.8 o'clock, perhaps 0.5≤K
Oxygen≤ 0.8 and K
Poison≤ 0.5 o'clock, fire situation evaluation module judged that this moment, fire situation was in than safe class;
As 0.5≤K
Oxygen≤ 0.8 and 0.5≤K
Poison≤ 0.8 o'clock, fire situation evaluation module judged that this moment, fire situation was in general grade;
Work as K
Oxygen〉=0.8 and 0.5≤K
Poison≤ 0.8 o'clock, perhaps 0.5≤K
Oxygen≤ 0.8 and K
Poison〉=0.8 o'clock, fire situation evaluation module judged that this moment, fire situation was in than danger classes;
Work as K
Oxygen〉=0.8 and K
Poison≤ 0.5 o'clock, perhaps K
Oxygen≤ 0.5 and K
Poison〉=0.8 o'clock, fire situation evaluation module judged that this moment, fire situation was in danger classes;
Work as K
Oxygen〉=0.8 and K
Poison〉=0.8 o'clock, fire situation evaluation module judged that this moment, fire situation was in the grade that is in extreme danger.
Intensity of a fire state of development is mainly according to oxygen, and the toxic and harmful concentration change is differentiated.
1. oxygen concentration kept stable, toxic and harmful concentration rises gradually, and this moment, the intensity of a fire was in preliminary developing stage;
2. oxygen concentration descends to some extent, and toxic and harmful continues to rise, and this moment, the intensity of a fire was in abundant combustion phases;
3. oxygen concentration continues to descend, and toxic and harmful rises gradually and tends towards stability, and might take place with a loud crash this moment;
4. oxygen concentration is gone up, the toxic and harmful density loss, and the intensity of a fire was in and weakened the stage this moment.
Provide the dangerous multifactorial evaluation in the scene of a fire in conjunction with scene of a fire gas danger classes, intensity of a fire state of development and fire scene image at last.
In conjunction with shown in Figure 3, image processing module and fire situation evaluation module can be integrated in the computing machine 3.
The movable on-line type fire situation grade detecting and evaluating system that provides according to the embodiment of the invention, can be in time the essential information of inside, the scene of a fire be transferred to outside, the scene of a fire by the radio transmission mode, and the oxygen concentration of inside, the scene of a fire, the danger of toxic and harmful concentration provided anticipation, by gas concentration being changed identification fire development trend.The field apparatus volume is little, and is in light weight, is convenient to the individual soldier and carries, and moves flexibly.Data transmission adopts the DSSS technology, and antijamming capability is strong.Adopt wireless relay in the transmission course, guarantee the stability of signal transmission and accurately fixed.
Embodiments of the invention have also proposed a kind of movable on-line type fire situation grade detecting appraisal procedure, in conjunction with shown in Figure 4.This method comprises the steps:
S101: the information of scene of fire is gathered and transmitted to the backpack sniffer.
Wherein, scene of fire information comprises gas concentration data, view data and fire scene temperature data.Specifically, backpack sniffer 110 is gathered fire scene temperature by Temperature sampler.Adopt gas collecting device 2 to detect O
2, CO, CO
2, H
2S, SO
2, HCL, NH
3,, NO
x, HCN, the concentration of gas ingredients such as hydrogen cyanide, volatile organic compounds VOC, inflammable gas LEL.In addition, adopt image acquisition device to adopt 4 and gather the image of scene of fire.The above-mentioned temperature data that collects, gas data and view data all can show by display screen, and warm oneself in front of a fire by the microwave form and to send outside the venue.
S102: wireless transmission trunk device receives and transmits the information at scene, the scene of a fire by wireless transmission trunk.
The data that in step 101, collect by the microwave form to or send outside the venue, receive and transmit by wireless transmission trunk device 120.Wherein, wireless transmission trunk device 120 can comprise one or more modulator-demodular unit, be placed on positions such as windowsill flexibly, possess the function of near other modulator-demodular units of automatic search and automatic network-building, solve the distance limit of microwave transmission and the shielding of construction wall.
S 103: fire situation apparatus for evaluating by the variation identification to gas concentration, is assessed the fire situation grade according to the information of the scene of fire that receives.
Receive information by the microwave communication mode from the scene of fire of wireless transmission trunk device 120.Fire situation apparatus for evaluating 130 by the variation identification of gas concentration, is assessed the fire situation grade according to the information that receives.Fire risk grade decision method comprises that oxygen concentration is differentiated, toxic and harmful concentration is differentiated and intensity of a fire state of development is differentiated.
Specifically, the oxygen concentration discrimination standard is that oxygen volume content risk factor is divided, and is as shown in table 1.The computing method of oxygen concentration COEFFICIENT K oxygen are
As shown in table 1, in the scene of a fire, O
2Volume content be 21% o'clock, fire risk is in safe class; O
2Volume content be lower than 18%, fire risk is in advanced warning grade; O
2Volume content be lower than at 15% o'clock, fire risk is in danger classes.
The differentiation of toxic and harmful concentration comprises that single toxic and harmful concentration is differentiated and multiple toxic and harmful is differentiated.Single toxic and harmful " safety ", " early warning ", " danger " concentration value are as shown in table 2, wherein N
sBe safe concentration value, N
aBe early warning concentration value, N
dBe the dangerous concentrations value.
Wherein, single toxic and harmful danger coefficient k
iComputing method:
Multiple toxic and harmful danger coefficient K computing method:
k
Poison=∑ k
i(3)
In conjunction with oxygen concentration and toxic and harmful concentration, scene of a fire gas danger classes is divided into 6 grades, as shown in table 3.
Specifically, work as K
Oxygen≤ 0.5 and K
Poison≤ 0.5 o'clock, fire situation evaluation module judged that this moment, fire situation was in safe class;
Work as K
Oxygen≤ 0.5 and 0.5≤K
Poison≤ 0.8 o'clock, perhaps 0.5≤K
Oxygen≤ 0.8 and K
Poison≤ 0.5 o'clock, fire situation evaluation module judged that this moment, fire situation was in than safe class;
As 0.5≤K
Oxygen≤ 0.8 and 0.5≤K
Poison≤ 0.8 o'clock, fire situation evaluation module judged that this moment, fire situation was in general grade;
Work as K
Oxygen〉=0.8 and 0.5≤K
Poison≤ 0.8 o'clock, perhaps 0.5≤K
Oxygen≤ 0.8 and K
Poison〉=0.8 o'clock, fire situation evaluation module judged that this moment, fire situation was in than danger classes;
Work as K
Oxygen〉=0.8 and K
Poison≤ 0.5 o'clock, perhaps K
Oxygen≤ 0.5 and K
Poison〉=0.8 o'clock, fire situation evaluation module judged that this moment, fire situation was in danger classes;
Work as K
Oxygen〉=0.8 and K
Poison〉=0.8 o'clock, fire situation evaluation module judged that this moment, fire situation was in the grade that is in extreme danger.
Intensity of a fire state of development is mainly according to oxygen, and the toxic and harmful concentration change is differentiated.
1. oxygen concentration kept stable, toxic and harmful concentration rises gradually, and this moment, the intensity of a fire was in preliminary developing stage;
2. oxygen concentration descends to some extent, and toxic and harmful continues to rise, and this moment, the intensity of a fire was in abundant combustion phases;
3. oxygen concentration continues to descend, and toxic and harmful rises gradually and tends towards stability, and might take place with a loud crash this moment;
4. oxygen concentration is gone up, the toxic and harmful density loss, and the intensity of a fire was in and weakened the stage this moment.
Provide the dangerous multifactorial evaluation in the scene of a fire in conjunction with scene of a fire gas danger classes, intensity of a fire state of development and fire scene image at last.
Be elaborated to utilizing fire situation grade detecting and evaluating system and method to detect scene of a fire information below in conjunction with embodiment.
As shown in Figure 5, the fire fighter bears data collector and moves freely in the scene of a fire, by temperature data, gas data and the view data in Temperature sampler 1, gas collecting pipe 2 and the image acquisition device 4 collection scenes of fire, and by the microwave communication mode, waring oneself in front of a fire outside the venue by wireless launcher the view data that collects and gas data, portion sends.As shown in Figure 5, image acquisition device 4 is installed in the safety helmet forward position.Wherein Temperature sampler 1, gas collecting pipe 2 and image acquisition device 4 are by gathering main frame 5 power supplies.The data of above-mentioned scene of fire are transmitted to fire situation apparatus for evaluating 130 by wireless transmission trunk device 120 and assess identification.Fire situation apparatus for evaluating 130 by the variation identification of gas concentration, is assessed the fire situation grade according to the information of the scene of fire that receives.Fire risk grade decision method comprises that oxygen concentration is differentiated, toxic and harmful concentration is differentiated and intensity of a fire state of development is differentiated.
The movable on-line type fire situation grade detecting appraisal procedure that provides according to the embodiment of the invention, can be in time the essential information of inside, the scene of a fire be transferred to outside, the scene of a fire by the radio transmission mode, and the oxygen concentration of inside, the scene of a fire, the danger of toxic and harmful concentration provided anticipation, by gas concentration being changed identification fire development trend.The field apparatus volume is little, and is in light weight, is convenient to the individual soldier and carries, and moves flexibly.Data transmission adopts the DSSS technology, and antijamming capability is strong.Adopt wireless relay in the transmission course, guarantee the stability of signal transmission and accurately fixed.
One of ordinary skill in the art will appreciate that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a ROM (read-only memory), disk or CD etc.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a movable on-line type fire situation grade detecting and evaluating system is characterized in that, comprises backpack sniffer, wireless transmission trunk device and fire situation apparatus for evaluating,
Described backpack sniffer is used to gather and transmit the information of scene of fire, comprises acquisition module, gathers main frame and wireless transport module;
Described wireless transmission trunk device is used to receive and transmit the information from the scene of fire of described backpack sniffer, comprises one or more modulator-demodular unit;
Described fire situation apparatus for evaluating, be used for the information of basis from the scene of fire of described wireless transmission trunk device, by the variation identification to gas concentration, assessment fire situation grade comprises wireless receiving module, image processing module and fire situation evaluation module.
2. detecting and evaluating system as claimed in claim 1 is characterized in that described acquisition module comprises gas collecting device, Temperature sampler and image acquisition device,
Described gas collecting device is used for the concentration of detected gas composition, comprises gas sensor;
Described Temperature sampler is used to gather fire scene temperature, comprises temperature sensor;
Described image acquisition device is used to gather the fire scene image data, comprises far-end camera and display.
3. detecting and evaluating system as claimed in claim 1 is characterized in that, described collection main frame comprises accumulator, is used to the power supply of described acquisition module and wireless transport module.
4. detecting and evaluating system as claimed in claim 1 is characterized in that described wireless transport module comprises the microwave signal transmitter, is used for the data that described acquisition module collects are warmd oneself in front of a fire outside the venue sending.
5. detecting and evaluating system as claimed in claim 1 is characterized in that,
Described wireless receiving module is used to receive the scene of a fire information from described wireless transmission trunk device;
Described image processing module is used to show the image in the scene of a fire can connect, switch different image acquisition devices;
Described fire situation evaluation module is used for by the variation identification to gas concentration assessment fire situation grade.
6. detecting and evaluating system as claimed in claim 5 is characterized in that, described fire situation evaluation module assessment fire situation grade comprises to be differentiated and the differentiation of intensity of a fire state of development oxygen concentration differentiation, toxic and harmful concentration.
7. detecting and evaluating system as claimed in claim 6 is characterized in that, described fire situation evaluation module is divided described fire situation grade as follows:
Wherein, K
OxygenBe the oxygen concentration coefficient; K
PoisonBe the harmful gas danger coefficient,
k
iBe single toxic gas danger coefficient, N of planting
sBe safe concentration value, N
dBe the dangerous concentrations value.
8. a movable on-line type fire situation grade detecting appraisal procedure is characterized in that, this method comprises the steps:
The information of scene of fire is gathered and transmitted to the backpack sniffer, and described scene of fire information comprises gas concentration data, view data and fire scene temperature data;
Wireless transmission trunk device receives and transmits the information from the described scene of fire of described backpack sniffer;
Fire situation apparatus for evaluating is according to the information from the scene of fire of described wireless transmission trunk device that receives, by variation identification to gas concentration, and assessment fire situation grade.
9. appraisal procedure as claimed in claim 8 is characterized in that, assessment fire situation grade comprises to be differentiated and the differentiation of intensity of a fire state of development oxygen concentration differentiation, toxic and harmful concentration.
10. appraisal procedure as claimed in claim 9 is characterized in that, described fire situation grade is divided as follows:
Wherein, K
OxygenBe the oxygen concentration coefficient; K
PoisonBe the harmful gas danger coefficient,
k
iBe single toxic gas danger coefficient, N of planting
sBe safe concentration value, N
dBe the dangerous concentrations value.
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| CN102231220A (en) * | 2011-05-31 | 2011-11-02 | 王建雄 | Detection method of fire disaster class |
| CN105486807A (en) * | 2015-11-25 | 2016-04-13 | 南京缔尔达智能科技有限公司 | Method for analyzing hidden safety trouble of dangerous chemical gas |
| CN106530576A (en) * | 2016-12-29 | 2017-03-22 | 广东小天才科技有限公司 | Fire danger early warning method and device based on mobile equipment |
| CN107066233A (en) * | 2017-04-18 | 2017-08-18 | 中山市思诺得环保科技有限公司 | A kind of computational methods for changing air purifier filter screen |
| CN107818653A (en) * | 2017-10-27 | 2018-03-20 | 安徽育安实验室装备有限公司 | Safe and intelligent chemoprevention protecting system in a kind of laboratory |
| CN111524315A (en) * | 2020-05-07 | 2020-08-11 | 浙江明基消防科技有限公司 | Automatic fire alarm system |
| CN116757437A (en) * | 2023-07-07 | 2023-09-15 | 浙江警正安全科技有限公司 | Intelligent fire emergency alarm system |
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