CN209387621U - A kind of environmental detection device - Google Patents
A kind of environmental detection device Download PDFInfo
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- CN209387621U CN209387621U CN201822211772.6U CN201822211772U CN209387621U CN 209387621 U CN209387621 U CN 209387621U CN 201822211772 U CN201822211772 U CN 201822211772U CN 209387621 U CN209387621 U CN 209387621U
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Abstract
The utility model discloses a kind of environmental detection devices.Disclosed detection device includes: ion mobility spectrometry IMS detector, for detecting the chemical warfare agent in environmental gas；And/or bioaerosol detector, for detecting the biological warfare agent in environmental gas；And CO Electriochemical measuring sensor, for detecting the CO in environmental gas；And/or photoion detector PID, for detecting the volatile organic matter in environmental gas；And/or smoke particle detector, for detecting finely ground particles ingredient in environmental gas；And, false positive module, for the testing result based on CO Electriochemical measuring sensor and/or PID and/or smoke particle detector, determine that IMS detector is detected for the false positive detection of chemical warfare agent and/or bioaerosol detector for the false positive of biological warfare agent.The detectability that there is disclosed technical solution excellent environment resistant to interfere.
Description
Technical field
The utility model relates to gaseous environment field of detecting more particularly to a kind of environmental detection devices.
Background technique
Chemical warfare agent typically refers to have virose chemical gas, can be divided into nerve to the function and effect of human body by it
Toxic agent, vesicant agent, blood agent, asphyxiating agents etc..Biological warfare agent typically refers to pathogenic bacteria, virus, spore
The aerosol form of equal organisms.Belong to mass destruction weapon, quilt using the chemical and biological weapons of chemical warfare agent or biological warfare agent
International treaties are forbidden to use, however since it is simple to manufacture, lethality is strong, is still illegally used.Current anti-terrorism and safety problem
Increasingly serious, these weapons are very likely used in the asymmetric wars such as the attack of terrorism, it is therefore desirable to be able to detect both
The technical solution of the toxic agent of type.
In the prior art, the chemical warfare agent detection method of mainstream is ion mobility spectrometry (IMS) technology, which can be real
Now to the alarm of chemical warfare agent and classification, certain technical solutions can also even determine the title and concentration of chemical warfare agent；Mainstream
Detection of biological field agents scheme generally use bioluminescence particle collector, pass through detection single particle radius and bioluminescence
To determine whether there are biological warfare agent, certain technical solutions can also even determine the concentration of biological warfare agent for reaction.
However, field environmental condition when due to carrying out biochemical war agent detection may be extremely complex (for example, there are vegetations
The disturbing factors such as cigarette, tail gas of fuel, the smoke of gunpowder), the false positive rate of false alarm of prior art when detecting is higher.
In order to solve the above-mentioned technical problem, it needs to propose new technical solution.
Utility model content
Environmental detection device according to the present utility model, comprising:
Ion mobility spectrometry IMS detector, for detecting the chemical warfare agent in environmental gas；And/or
Bioaerosol detector, for detecting the biological warfare agent in environmental gas；And
CO Electriochemical measuring sensor, for detecting the CO in environmental gas；And/or
Photoion detector PID, for detecting the volatile organic matter in environmental gas；And/or
Smoke particle detector, for detecting finely ground particles ingredient in environmental gas；And
False positive module, for the inspection based on CO Electriochemical measuring sensor and/or PID and/or smoke particle detector
It surveys as a result, determining that IMS detector is directed to biological warfare agent for the false positive detection of chemical warfare agent and/or bioaerosol detector
False positive detection.
Environmental detection device according to the present utility model, when IMS detector is the positive for the testing result of chemical warfare agent
And/or bioaerosol detector, when for the testing result of biological warfare agent being positive, false positive module is also used to:
When the testing result based on CO Electriochemical measuring sensor, PID and smoke particle detector is the positive, IMS is determined
Detector produces false positive detection and/or bioaerosol detector for chemical warfare agent and produces false sun for biological warfare agent
Property detection.
Environmental detection device according to the present utility model, when IMS detector is the positive for the testing result of chemical warfare agent
When, false positive module is also used to:
When IMS detector detects chemical warfare agent and PID is to this kind of chemical warfare agent has response, and the change that PID is detected
When the first predetermined percentage of the concentration that the concentration for learning war agent is lower than the chemical warfare agent that IMS detector detects, determine that IMS is detected
Device produces false positive detection for chemical warfare agent；And/or
When IMS detector detects chemical warfare agent and PID is to this kind of chemical warfare agent has response, and the change that PID is detected
The concentration of war agent is equal to or higher than the first predetermined percentage and CO of the concentration for the chemical warfare agent that IMS detector detects
When the testing result of Electriochemical measuring sensor is not the positive, determine that IMS detector produces correct detection for chemical warfare agent.
Environmental detection device according to the present utility model, when bioaerosol detector is directed to the testing result of biological warfare agent
When for the positive, false positive module is also used to:
The concentration of the smoke particle detected by the smoke particle detector is less than detected by bioaerosol detector
Bio-aerosol concentration the second predetermined percentage when, determine that bioaerosol detector produces false sun for biological warfare agent
Property detection；And/or
The concentration of the smoke particle detected by the smoke particle detector is more than or equal to bioaerosol detector and is examined
Second predetermined percentage of the bio-aerosol concentration measured and when the testing result of CO Electriochemical measuring sensor is not the positive,
Determine that bioaerosol detector produces correct detection for biological warfare agent.
Environmental detection device according to the present utility model, further includes:
Notice and alarm module, for exporting the result of false positive detection and being correctly detecting chemical warfare agent and/or life
The alarm signal of object war agent.
Environmental detection device according to the present utility model, CO Electriochemical measuring sensor, PID and smoke particle detector use
The gas chamber of one connection, gas chamber is for providing flow consistent gas to be detected.
Environmental detection device according to the present utility model is provided with filter membrane on air inlet, and filter membrane includes glass fibre material
Material.
Environmental detection device according to the present utility model, IMS detector and/or bioaerosol detector include being used for
Automatically adjust the air pump of gas flow to be detected.
Above-mentioned technical proposal according to the present utility model, the detectability interfered with excellent environment resistant.
Detailed description of the invention
It is incorporated into specification and the attached drawing for constituting part of specification shows the embodiments of the present invention, and
And it is used to explain the principles of the present invention together with relevant verbal description.In the drawings, similar appended drawing reference is used
In the similar element of expression.The accompanying drawings in the following description is some embodiments of the utility model, rather than whole embodiments.It is right
For those of ordinary skill in the art, without creative efforts, other can be obtained according to these attached drawings
Attached drawing.
Fig. 1 schematically illustrates the schematic block diagram of environmental detection device according to the present utility model.
Fig. 2 schematically illustrates the schematic flow diagram of environment detection method according to the present utility model.
Fig. 3 schematically illustrates a kind of signal of specific implementation structure of environmental detection device according to the present utility model
Figure.
Fig. 4 schematically illustrates a kind of signal of concrete methods of realizing of environment detection method according to the present utility model
Flow chart.
Fig. 5 schematically illustrates the different detectors in technical solution according to the present utility model and examines to vegetation cigarette
The testing result of survey.
Fig. 6 schematically illustrates the different detectors in technical solution according to the present utility model and carries out to engine exhaust
The testing result of detection.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the range of the utility model protection.It should be noted that in the absence of conflict, embodiment and embodiment in the application
In feature can mutual any combination.
The technical issues of for described in background technology part, based on combine multiple auxiliary detectors testing result,
To assist the detection for carrying out chemical warfare agent and/or biological warfare agent to propose so that the general plotting of false positive rate of false alarm is effectively reduced
Following technical scheme.
Fig. 1 schematically illustrates the schematic block diagram of environmental detection device 100 according to the present utility model.
As shown in Figure 1, environmental detection device 100 according to the present utility model includes:
Ion mobility spectrometry (IMS) detector 101, for detecting the chemical warfare agent in environmental gas；And/or
Bioaerosol detector 103, for detecting (for example, aerosol form) biological warfare agent in environmental gas；
And
CO Electriochemical measuring sensor 105, for detecting the CO in environmental gas；And/or
Photoion detector (PID) 107, for detecting the volatile organic matter in environmental gas；And/or
Smoke particle detector 109, for detecting finely ground particles ingredient in environmental gas；And
False positive module 111, for based on CO Electriochemical measuring sensor 105 and/or PID 107 and/or smoke particle
The testing result of detector 109 determines that IMS detector 101 is visited for the false positive detection of chemical warfare agent and/or bioaerosol
The false positive that device 103 is surveyed for biological warfare agent detects.
For example, IMS detector 101 detects chemical warfare agent based on ion mobility spectrometry.
Ion mobility spectrometry is tested using radioactive substance ray (alpha ray or β ray) or passive ionization method ionization gaseous state
Molecule is surveyed, and the electronics after ionization, ion is made to form different kinds of ions cluster under hydrone and oxygen effect.In the effect of electric field
Under, these product ions pass through the ion gate periodically opened and enter migration area.On the one hand energy is obtained from electric field do orientation drift
It moves, is on the other hand constantly collided and off-energy with the neutral fluxes gas molecule of reverse flow, due to these product ions
Quality, the electrically charged, collision cross-section of institute and steric configuration are different, therefore migration rate in the electric field is respectively different, so that not
Same ion reaches the time difference of detector and is separated.Ion mobility spectrometry can detecte following chemical warfare at present
Agent: nerve toxicant (for example, sarin, Suo Man, tabun, cyclosarin, VX etc.), vesicant agent are (for example, mustard gas, mustargen, road
Yi Shi gas etc.), blood agent (for example, hydrogen cyanide, hydrogen chloride etc.), asphyxiating agents (for example, phosgene, chlorine) etc..The party
The advantages of method, is high sensitivity, does not need sample preparation, detection speed height, and disadvantage is that instrument cost is higher, may contain radiation source, resist
Environmental disturbances are poor.
For example, bioaerosol detector 103 can be bioluminescence particle collector.
Bioluminescence particle collector is focused on Inhaled Particles After Acute flight path using laser, when single particle passes through the coke
Point can produce scattering light, if the particle is bioaerosol particle, can also generate bioluminescence response.It should by measurement
The aeromechanics diameter of process, light scatter intensity and fluorescence intensity, can be realized the detection to bioaerosol.General biology
The detection particle size range of aerosol is 1-10 μm.
However, there are the typical environmental disturbances comprising finely ground particles such as vegetation cigarette, engine exhaust, the smoke of gunpowder
In the case of, the testing result that IMS detector 101 detects chemical warfare agent is only used only and does not reach requirement (for example, false positive
Rate of false alarm is higher, may refer to national military standard 1751A-2007 chemical poison alarm does the resistance interfered above it is specific
Regulation).In addition, the inspection that bioaerosol detector 103 detects biological warfare agent is only used only under above-mentioned interference environment
Result is surveyed also not reach requirement.
More specifically, vegetation cigarette refers to the product due to burning draft, xylophyta and these substances (for example, paper
Deng) generate smog and exhaust gas mixture.Engine exhaust refers to gasoline engine or diesel engine in the idling state, fuel oil combustion
The gas and carbon-bearing particulate matter of insufficient generation.The smoke of gunpowder is referring broadly to the gas generated after the explosion of the explosives such as TNT, black powder
With particulate matter mixture.According to bibliography Selective Fluorescence Detection of Polycyclic
Aromatic Hydrocarbons in Environmental Tobacco Smoke and Other Airborne
Particles,Ranjith Mahanama,Lara A.Gundel,Joan M.Daisey,International Journal
of Environmental Analytical Chemistry,1994,56:4,289-309,DOI:10.1080/
03067319408034108；And A radical approach to soot formation, Murray Thomson,
Tirthankar Mitra, Science, 2018,361:6046,978-979, DOI:10.1126/science.aau5941 institute
Disclosure, the above chaff interferent have some common characteristics, such as wherein also have containing there are many particulate matter of particle size
The CO for thering is oxidation operation to generate2, carbonization generates in CO and combustion process organic conjugated molecule is (for example, anthracene, click
Azoles etc.).These conjugation organic matters have different molecular dimension and property, after entering the ionization chamber of IMS detector, easily produce
Raw complicated migration spectrogram, these superposition spectrograms are very likely similar to the migration spectrogram of some chemical warfare agents, to cause to miss
Report.In addition, these conjugation organic matters are most of all with fluorescence, they are attached on the particulate matter of generation, it is possible to cause
Bioaerosol detector 103 (for example, bioluminescence particle collector) generates the counting of mistake, to will also result in wrong report.
Therefore, in order to avoid environmental disturbances such as vegetation cigarette, engine exhaust, the smoke of gunpowder caused by, merely by IMS detection
When device and/or bioaerosol detector carry out the detection of chemical warfare agent and/or biological warfare agent respectively, false positive rate of false alarm mistake
High problem, it is also necessary to further combined in CO Electriochemical measuring sensor, photo ionization detector, smoke particle detector at least
It is a kind of that auxiliary detector is used as to carry out auxiliary detection, to reduce the false positive rate of false alarm of biochemical war agent detection.
For example, CO Electriochemical measuring sensor 105 can be sensitive to CO and selective Electriochemical measuring sensor.
Electriochemical measuring sensor is by reacting and generating the electric signal directlyed proportional to gas concentration to tested gas come work
Make, is usually made of sensing electrode (or working electrode) and counterelectrode, and separated by a thin electrolyte layers.Gas passes through micro- first
Small hollow billet type aperture reacts with detector, followed by hydrophobic barrier layer, eventually arrives at electrode surface.Electriochemical measuring sensor
It can permit proper amount of gas to react with sensing electrode, to form the enough electric signals of intensity, while preventing electrolyte leakage
To outside.Gas across barrier diffusion reacts with sensing electrode, and sensing electrode can be anti-using oxidation reaction or reduction
The mechanism answered.These reactions are catalyzed by the electrode material designed for tested gas.Correspondingly, counterelectrode participates in sensing
The corresponding reduction reaction of the reaction of electrode or oxidation reaction realize the conservation of charge and substance.
For example, photoion detector PID 107 can generate ion using ultraviolet photon ionization gaseous state determinand molecule, with
These ions hit electrode generation electric signal again afterwards, to realize testing goal.Its advantages include rapid, sensitive, concentration-letter
Number range of linearity is big, but a disadvantage is that most of common fluorescence probe can be produced by photoionization without selectivity
Raw signal, to generate a large amount of false alarms.The gaseous matter different for every kind, photoion detector can all have a fixation
Sensitivity coefficient CF value, CF is smaller sensitiveer.
For example, may include ion type smog sensor inside smoke particle detector 109.Ion type smog sensor is
A kind of technologically advanced, stable and reliable in work sensor, there is radioactive source americium 241 in outer ionisation chamber the inside inside for it, ionizes generation
Positive and negative ion, it is respectively mobile to positive and negative electrode under the action of electric field.Under normal conditions, the electric current of inside and outside ionisation chamber, electricity
Pressure is all stable.Once there is smog to flee in disorder outer ionisation chamber.The proper motion of charged particle is disturbed, electric current, voltage just have
Changed, the balance between inside and outside ionisation chamber is destroyed, to generate detection signal.Various smog are widely used at present to disappear
In anti-alarm system.
Above-mentioned technical proposal according to the present utility model, by IMS detector and/or bioaerosol detector respectively into
The detection of row chemical warfare agent and/or biological warfare agent combines CO Electriochemical measuring sensor, photo ionization detector, smoke particle and visits
At least one of device is surveyed as auxiliary detector and carries out auxiliary detection, reduces the false positive rate of false alarm of biochemical war agent detection.
It optionally, is the detection of positive and/or bioaerosol for the testing result of chemical warfare agent when IMS detector 101
When device 103 for the testing result of biological warfare agent is positive, false positive module 111 is also used to:
When the testing result based on CO Electriochemical measuring sensor 105, PID 107 and smoke particle detector 109 is the positive
When, determine that IMS detector 101 produces false positive detection and/or bioaerosol detector 103 for life for chemical warfare agent
Object war agent produces false positive detection.
For example, the testing result of CO Electriochemical measuring sensor 105, PID 107 and smoke particle detector 109 is for the positive
Refer to: CO Electriochemical measuring sensor 105, PID 107 and the respective detected value of smoke particle detector 109 are more than respectively to set in advance respectively
Fixed threshold value or background value.
Optionally, when IMS detector is positive for the testing result of chemical warfare agent, false positive module 111 is also
For:
When IMS detector detects chemical warfare agent and PID is to this kind of chemical warfare agent has response, and the change that PID is detected
When the first predetermined percentage of the concentration that the concentration for learning war agent is lower than the chemical warfare agent that IMS detector detects, determine that IMS is detected
Device produces false positive detection for chemical warfare agent；And/or
When IMS detector detects chemical warfare agent and PID is to this kind of chemical warfare agent has response, and the change that PID is detected
The concentration of war agent is equal to or higher than the first predetermined percentage and CO of the concentration for the chemical warfare agent that IMS detector detects
When the testing result of Electriochemical measuring sensor is not the positive, determine that IMS detector produces correct detection for chemical warfare agent.
For example, the first predetermined percentage can be 50%, indicates to detect chemical warfare agent when IMS detector and PID is to this
Kind chemical warfare agent has response, and the concentration for the chemical warfare agent that PID is detected is substantially less than the chemical warfare that IMS detector detects
When the concentration of agent, determine that IMS detector produces false positive detection for chemical warfare agent.
Optionally, when bioaerosol detector is positive for the testing result of biological warfare agent, false positive mould
Block 111 is also used to:
The concentration of the smoke particle detected by the smoke particle detector is less than detected by bioaerosol detector
Bio-aerosol concentration the second predetermined percentage when, determine that bioaerosol detector produces false sun for biological warfare agent
Property detection；And/or
The concentration of the smoke particle detected by the smoke particle detector is more than or equal to bioaerosol detector and is examined
Second predetermined percentage of the bio-aerosol concentration measured and when the testing result of CO Electriochemical measuring sensor is not the positive,
Determine that bioaerosol detector produces correct detection for biological warfare agent.
For example, the second predetermined percentage can be 60%, indicate to work as smoke particle detected by smoke particle detector
Concentration significantly less than bio-aerosol concentration detected by bioaerosol detector when, determine bioaerosol detector
False positive detection is produced for biological warfare agent.
For example, auxiliary detector can judge IMS detector 101 or bioaerosol detection by method in detail below
Whether the alarm of device 103 is reliable:
PID 107 has sensitive response for nerve and blister gases, thus when IMS detector 101 is alarmed,
PID 107 necessarily has apparent signal to improve before and after alarm.Therefore, when IMS detector 101 alarm and be determined as nerve and
When blister gases, if 107 signal of PID not no signal of corresponding concentration in the several seconds before and after the response of IMS detector 101
It improves, then may determine that as false positive warnings.For example, working as bioluminescence particle collector (that is, bioaerosol detector 103)
When alarm, smoke particle detector 109 should also have corresponding concentration to be promoted at this time.Conversely, then may determine that as false positive report
It is alert.
For example, when at least one of above-mentioned 3 kinds of auxiliary detectors and IMS detector 101 and/or bioaerosol detect
When device 103 is run together, the measurement data of one section of time acquisition background environment is needed.And when the starting of IMS detector 101
Between longest, be 2-20 minutes, be enough this period to start auxiliary detector, and acquire necessary data.
Optionally, as shown in the dotted line frame of Fig. 1, environmental detection device 100 further include:
Notice and alarm module 113, for export false positive detection result and be correctly detecting chemical warfare agent and/
Or the alarm signal of biological warfare agent.
For example, the CO in air-flow can be detected when carrying out auxiliary detection using CO Electriochemical measuring sensor 105 with rapid quantitation
Concentration.By test, when IMS detector 101 generates false positive warnings, CO concentration is above 10ppm, and CO in surroundings
Concentration is only 0-1ppm, it is sufficient to generate difference.
For example, when using PID 107 carry out auxiliary detection when, can detecte out and common are machine volatile matter, for tar,
Unburned complete fuel etc. has apparent response.
For example, can detecte out various small particles in air when carrying out auxiliary detection using smoke particle detector 109
Suspended particulate, apparent detection signals can be generated to vegetation cigarette, engine exhaust, the smoke of gunpowder this 3 kinds of chaff interferents.
For example, any in this 3 kinds of detectors of CO Electriochemical measuring sensor 105, PID 107 and smoke particle detector 109
One kind can be that mono signal output detector, any one can be using the data modes of " when m- concentration ".
Optionally, when using at least one of above-mentioned 3 kinds of auxiliary detectors, if IMS detector 101 and/or life
Object aerosol detection device 103 is not alarmed, then illustrates that current environment does not interfere with, and auxiliary detector updates base-line data.
Optionally, after IMS detector 101 and/or bioaerosol detector 103 are alarmed, basis is needed to assist at this time
The information of detector judges possible ambient condition.When used auxiliary detector generates clear signal, IMS detector
101 and/or bioaerosol detector 103 alarm may infer that for false positive wrong report.
For example, above-mentioned 3 auxiliary detectors can independently constitute a judgment module, only has IMS spy to auxiliary judgment
The case where the case where survey device 101 is to detect chemical gas or only bioaerosol detector 103 are to detect biology poison gas.
Optionally, CO Electriochemical measuring sensor 105, PID 107 and smoke particle detector 109 use the gas being connected to
Room, gas chamber is for providing flow consistent gas to be detected.
Optionally, filter membrane is provided on the air inlet of detection of poison gas device 100, filter membrane includes glass fiber material.
Optionally, IMS detector 101 and/or bioaerosol detector 103 include for automatically adjusting gas to be detected
The air pump of flow.
Fig. 2 schematically illustrates the schematic flow diagram of environment detection method according to the present utility model.
As shown in Fig. 2, environment detection method according to the present utility model includes:
Step S202: using ion mobility spectrometry IMS detector, detects the chemical warfare agent in environmental gas (for example, chemical warfare
Whether there is or not, chemical warfare agent concentration for agent)；And/or
Step S204: using bioaerosol detector, detects the biological warfare agent in environmental gas (for example, biological warfare agent
Whether there is or not, biological warfare agent concentration)；And
Step S206: using CO Electriochemical measuring sensor, detects the CO (for example, CO concentration) in environmental gas；And/or
Step S208: using photoion detector PID, detects the volatile organic matter in environmental gas (for example, volatility
Organic concentration)；And/or
Step S210: using smoke particle detector, detects finely ground particles ingredient in environmental gas；And
Step S212: the testing result based on CO Electriochemical measuring sensor and/or PID and/or smoke particle detector determines
IMS detector is examined for the false positive detection of chemical warfare agent and/or bioaerosol detector for the false positive of biological warfare agent
It surveys.
Optionally, as shown in the dotted line frame of Fig. 2, environment detection method according to the present utility model, when IMS detector is directed to
When the testing result of chemical warfare agent is positive and/or bioaerosol detector for the testing result of biological warfare agent is the positive,
Step S212 includes:
Step S214: when the testing result based on CO Electriochemical measuring sensor, PID and smoke particle detector is the positive
When, determine that IMS detector produces false positive detection and/or bioaerosol detector for biological warfare agent for chemical warfare agent
Produce false positive detection.
Optionally, as shown in the dotted line frame of Fig. 2, environment detection method according to the present utility model, when IMS detector is directed to
When the testing result of chemical warfare agent is positive, in step S212, based on CO Electriochemical measuring sensor and/or PID and/or smog
The testing result of grain detector determines the step of IMS detector is detected for the false positive of chemical warfare agent further include:
Step S216: when IMS detector detect chemical warfare agent and PID to this kind of chemical warfare agent have response, and PID examine
When the concentration of the chemical warfare agent measured is lower than the first predetermined percentage of the concentration for the chemical warfare agent that IMS detector detects, really
Determine IMS detector and produces false positive detection for chemical warfare agent；And/or
Step S218: when IMS detector detect chemical warfare agent and PID to this kind of chemical warfare agent have response, and PID examine
The concentration of the chemical warfare agent measured is equal to or higher than the first predetermined percentage of the concentration for the chemical warfare agent that IMS detector detects
Than and the testing result of CO Electriochemical measuring sensor be not the positive when, determine that IMS detector produces correctly for chemical warfare agent
Detection.
Optionally, as shown in the dotted line frame of Fig. 2, environment detection method according to the present utility model, when bioaerosol is visited
When to survey device for the testing result of biological warfare agent be positive, in step S212, based on CO Electriochemical measuring sensor and/or PID and/
Or the testing result of smoke particle detector, determine the step of bioaerosol detector is detected for the false positive of biological warfare agent
Further include:
Step S220: the concentration of the smoke particle detected by the smoke particle detector is less than bioaerosol detector
When the second predetermined percentage of detected bio-aerosol concentration, determine that bioaerosol detector is produced for biological warfare agent
False positive detection is given birth to；And/or
Step S222: the concentration of the smoke particle detected by the smoke particle detector is visited more than or equal to bioaerosol
It surveys the second predetermined percentage of bio-aerosol concentration detected by device and the testing result of CO Electriochemical measuring sensor is not
When positive, determine that bioaerosol detector produces correct detection for biological warfare agent.
Optionally, as shown in the dotted line frame of Fig. 2, environment detection method according to the present utility model, further includes:
Step S224: the result of output false positive detection and the announcement for being correctly detecting chemical warfare agent and/or biological warfare agent
Alert signal.
It, below will knot in order to make those skilled in the art be more clearly understood that above-mentioned technical proposal according to the present utility model
Specific embodiment is closed to be described.
Fig. 3 schematically illustrates a kind of specific implementation structure 300 of environmental detection device according to the present utility model
Schematic diagram.
As shown in figure 3, the specific implementation structure 300 has used the IMS detector 1 of two sets of technology maturations (that is, above-mentioned IMS
Detector 101) and bioluminescence particle collector 2 (that is, above-mentioned bioaerosol detector 103) be used as alarm unit and three
Aforementioned auxiliary detector 3,4,5 (that is, above-mentioned CO Electriochemical measuring sensor 105, PID 107, smoke particle detector 109).
For example, the ChemProFXi stationary detector of Environics company, Finland can be used in IMS detector 1；It is raw
The 1 bioaerosol detector of FLIRIBAC of FLIR Systems company, the U.S. can be used in object fluorescent grain counter 2.It is auxiliary
Help detector 3,4,5 that can use CO Electriochemical measuring sensor (ECSense, the model: 01-ES1-CO-100- of 0-100ppm respectively
01), 0.01-200ppm PID (MOCON,Gas Analyzers&Sensors, model: 045-012)
With smoke alarm (bright Sheng science and technology, model: HIS-07).ChemProFXi alarm and 1 alarm of FLIR IBAC use it
Included air pump automatic adjustment.
As shown in figure 3, air inlet 6 is the entire air inlet for realizing structure 300 (big cabinet), it is micro- with 100 in import 6
The filter membrane (being represented by dashed line in Fig. 3) that rice thickness glass fiber is constituted.Air inlet 7 be one connection gas chamber 8 (for example, by
Less than the closed space of small box for realizing structure 300) air inlet, be not provided with filter membrane.Gas chamber 8 is CO electrochemical detection
Device 3, PID 4, these three auxiliary detectors of smoke particle detector 5 provide consistent flow.Diaphragm pump 9 is flow 400ml/
The diaphragm pump of min provides stable air-flow for CO Electriochemical measuring sensor 3, PID 4, smoke particle detector 5.Gas outlet 10 is
The gas outlet of gas chamber 8.The propeller pump that flabellum pump 11 is flow 8L/min, to acquire the gas and aerosol of external environment.Out
Port 12 is the entire gas outlet for realizing structure 300.As described above, in design, the gas flow of gas chamber 8 is designed to want
Less than the entire gas flow for realizing structure 300.
Fig. 4 schematically illustrates a kind of signal of concrete methods of realizing of environment detection method according to the present utility model
Flow chart.
As shown in figure 4, the specific implementation the following steps are included:
1, start CO electrochemical sensor, PID sensor, smoke particle sensor, IMS sensor, bioluminescence particle
Counter.
2, in real time record IMS and bioluminescence particle collector state, calculate CO electrochemical sensor, PID sensor,
The baseline of smoke particle sensor.
3, judge whether at least one is alarmed for IMS and bioluminescence particle collector, if do not alarmed, in return
Otherwise one step performs the next step.
4, judge whether CO electrochemical sensor, PID sensor, smoke particle sensor generate characteristic signal, if produced
Characteristic signal has been given birth to, then has generated interference prompt, otherwise, has generated the final alarm of corresponding IMS and/or bioluminescence particle collector
Signal.
5, judge whether alert event terminates, if terminated, otherwise return step 2 continues to generate corresponding IMS and/or life
The final alarm signal of object fluorescent grain counter.
Fig. 5 schematically illustrates the different detectors in technical solution according to the present utility model and examines to vegetation cigarette
The testing result of survey.
The method for generation of vegetation cigarette is with reference in GJB 6114-2007 " the anti-vegetation cigarette of chemical reconnaissance equipment interferes evaluation method "
The method for generation of vegetation cigarette.Before vegetation cigarette occurs, there is no vegetation cigarette in generator, illuminance 101, after taking place, light
Illumination is gradually reduced.The reality that Fig. 5 (a) and Fig. 5 (b) are respectively illustrated when vegetation cigarette when the use of illumination being 85 and 75 tested
Test result.
As shown in Fig. 5 (a), when illumination is 85, blister gases alarm, while bioaerosol are generated in the IMS several seconds
Grain count also rapid increase also produces bioaerosol alarm in 5 seconds that IMS generates alarm.At the same time, CO,
PID, smoke detector reading also improved rapidly in synchronization, respectively generate alarm.It can see CO, PID, smoke detection
The response speed of device and IMS are very close, and these detectors are slightly faster than bioaerosol detector.
It is as a result similar when illumination being made to be reduced to 75 when vegetation smoke density further increases as shown in Fig. 5 (b).IMS is still produced
Vesicant agent false positive warnings are given birth to, bioaerosol detector also produces alarm, and CO, PID, smoke detector is dense
Degree further increases, and obvious alarm still can be generated to the false positive, and response is very fast, with IMS and bioaerosol
The response speed of alarm is close or shifts to an earlier date.
Therefore, in this embodiment, CO, PID, smoke detector successfully prevent molten to chemical gas and biogas
The wrong report (corresponding to above-mentioned steps S214-S224) of glue.
Fig. 6 schematically illustrates the different detectors in technical solution according to the present utility model and carries out to engine exhaust
The testing result of detection.
This experiment using high output diesel engine idling tail gas as interference sample, by environmental detection device 100 into
Port is placed on engine gas outlet airflow direction and is tested.Insufficient due to burning when engine is in idling, engine generates
Apparent smoke particle and a variety of VOC.
As shown in fig. 6, various detectors are produced and obvious responsed in this example, wherein tail gas wrong report is erosion by IMS
Property poison gas, while bioaerosol alarm generate alarm.And CO detector, PID detector, smoke detector have characteristic body
Quality detection, thus the interference of false positive caused by engine exhaust class can be excluded.In addition, IMS and PID is strong to the signal of engine exhaust
Degree can speculate that engine exhaust has the gas chaff interferent of more contents obviously higher than vegetation cigarette.And the test-strips of this experiment
Part, requires compared to GJB1751A-2007 " chemical agent alarm general specification standard " tightened up, therefore is suitable for relevant device
Anti-interference is promoted.
Therefore, above-mentioned technical proposal according to the present utility model is equally applicable to for false positive caused by engine exhaust
It is detected, there is good interference free performance.
In conclusion above-mentioned technical proposal according to the present utility model, has the advantage that
1, the detectability interfered with excellent environment resistant, for example, false positive when biochemical war agent detection can be reduced
Rate of false alarm.
2, in addition, due to military toxic agent, such as sarin, mustard gas etc., CO detector will not due to its excellent selectivity
Response is generated to common poison gas, and smoke detector will not generate signal to these gas molecules, because of the vacation without deteriorating IMS
Negative rate of false alarm.And bio-aerosol particles can't generate organic vapor or CO gas, and CO detector and PID will not be made to detect
Device generates signal, because of the false negative rate of false alarm without deteriorating bioaerosol alarm.That is, according to the present utility model above-mentioned
Technical solution, reduce biochemical war agent detection when false positive rate of false alarm while, not will increase false negative rate of false alarm.
Therefore, above-mentioned technical proposal according to the present utility model can combine CO detector, PID detector, smoke detection
The compound judgement of device multi-detector can effectively exclude the false positive interference of vegetation cigarette, engine exhaust, realize GJB1751A-
The design object of 2007 " chemical agent alarm general specification standard " defineds.
Descriptions above can combine implementation individually or in various ways, and these variants all exist
Within the protection scope of the utility model.
It will appreciated by the skilled person that whole or certain steps, system, dress in method disclosed hereinabove
Functional module/unit in setting may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment,
Division between the functional module/unit referred in the above description not necessarily corresponds to the division of physical assemblies；For example, one
Physical assemblies can have multiple functions or a function or step and can be executed by several physical assemblies cooperations.Certain groups
Part or all components may be implemented as by processor, such as the software that digital signal processor or microprocessor execute, or by
It is embodied as hardware, or is implemented as integrated circuit, such as specific integrated circuit.Such software can be distributed in computer-readable
On medium, computer-readable medium may include computer storage medium (or non-transitory medium) and communication media (or temporarily
Property medium).As known to a person of ordinary skill in the art, term computer storage medium is included in for storing information (such as
Computer readable instructions, data structure, program module or other data) any method or technique in the volatibility implemented and non-
Volatibility, removable and nonremovable medium.Computer storage medium include but is not limited to RAM, ROM, EEPROM, flash memory or its
His memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic holder, tape, disk storage or other
Magnetic memory apparatus or any other medium that can be used for storing desired information and can be accessed by a computer.This
Outside, known to a person of ordinary skill in the art to be, communication media generally comprises computer readable instructions, data structure, program mould
Other data in the modulated data signal of block or such as carrier wave or other transmission mechanisms etc, and may include any information
Delivery media.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations.
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, the skill of various embodiments of the utility model that it does not separate the essence of the corresponding technical solution
The spirit and scope of art scheme.
Claims (8)
1. a kind of environmental detection device characterized by comprising
Ion mobility spectrometry IMS detector, for detecting the chemical warfare agent in environmental gas；And/or
Bioaerosol detector, for detecting the biological warfare agent in environmental gas；And
CO Electriochemical measuring sensor, for detecting the CO in environmental gas；And/or
Photoion detector PID, for detecting the volatile organic matter in environmental gas；And/or
Smoke particle detector, for detecting finely ground particles ingredient in environmental gas；And
False positive module, for being visited based on the CO Electriochemical measuring sensor and/or the PID and/or the smoke particle
The testing result for surveying device determines that the IMS detector is visited for the false positive detection of chemical warfare agent and/or the bioaerosol
The false positive that device is surveyed for biological warfare agent detects.
2. environmental detection device as described in claim 1, which is characterized in that when the IMS detector is for chemical warfare agent
Testing result is the positive and/or described bioaerosol detector when for the testing result of biological warfare agent being the positive, the vacation
Positive detecting module is also used to:
When the testing result based on CO Electriochemical measuring sensor, PID and smoke particle detector is the positive, the IMS is determined
Detector produces false positive detection for chemical warfare agent and/or the bioaerosol detector is produced for biological warfare agent
False positive detection.
3. environmental detection device as described in claim 1, which is characterized in that when the IMS detector is for chemical warfare agent
When testing result is positive, the false positive module is also used to:
When the IMS detector detects chemical warfare agent and PID is to the chemical warfare agent has response, and the institute that PID is detected
State the first predetermined percentage of the concentration of chemical warfare agent lower than the concentration for the chemical warfare agent that the IMS detector detects
When, determine that the IMS detector produces false positive detection for the chemical warfare agent；And/or
When the IMS detector detects chemical warfare agent and PID is to the chemical warfare agent has response, and the institute that PID is detected
The concentration for stating chemical warfare agent is equal to or higher than the first predetermined hundred of the concentration of the chemical warfare agent that the IMS detector detects
When the testing result of ratio and CO Electriochemical measuring sensor being divided not to be the positive, determine the IMS detector for the chemical warfare agent
Produce correct detection.
4. environmental detection device as described in claim 1, which is characterized in that when the bioaerosol detector is for biology
When the testing result of war agent is positive, the false positive module is also used to:
The concentration of the smoke particle detected by the smoke particle detector is less than life detected by bioaerosol detector
When the second predetermined percentage of object aerosol concentration, determine that the bioaerosol detector produces false sun for biological warfare agent
Property detection；And/or
The concentration of the smoke particle detected by the smoke particle detector is more than or equal to detected by bioaerosol detector
The second predetermined percentage of bio-aerosol concentration and the testing result of CO Electriochemical measuring sensor when not being the positive, determine
The bioaerosol detector produces correct detection for biological warfare agent.
5. environmental detection device as described in claim 1, which is characterized in that further include:
Notice and alarm module, for exporting the result of false positive detection and being correctly detecting chemical warfare agent and/or biological warfare
The alarm signal of agent.
6. environmental detection device as described in claim 1, which is characterized in that the CO Electriochemical measuring sensor, the PID and institute
The gas chamber that smoke particle detector uses a connection is stated, the gas chamber is for providing flow consistent gas to be detected.
7. environmental detection device as described in claim 1, which is characterized in that be arranged on the air inlet of the environmental detection device
There is filter membrane, the filter membrane includes glass fiber material.
8. environmental detection device as described in claim 1, which is characterized in that the IMS detector and/or the biogas are molten
Glue detector includes the air pump for automatically adjusting gas flow to be detected.
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| CN201822211772.6U CN209387621U (en) | 2018-12-26 | 2018-12-26 | A kind of environmental detection device |
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| CN201822211772.6U CN209387621U (en) | 2018-12-26 | 2018-12-26 | A kind of environmental detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521163A (en) * | 2018-12-26 | 2019-03-26 | 北京华泰诺安探测技术有限公司 | A kind of environmental detection device and method |
| US11619570B1 (en) | 2020-06-02 | 2023-04-04 | United States Of America As Represented By The Secretary Of The Air Force | Filter-based air sampler capable of integration into small unmanned aerial vehicles |
-
2018
- 2018-12-26 CN CN201822211772.6U patent/CN209387621U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521163A (en) * | 2018-12-26 | 2019-03-26 | 北京华泰诺安探测技术有限公司 | A kind of environmental detection device and method |
| CN109521163B (en) * | 2018-12-26 | 2024-04-05 | 北京华泰诺安探测技术有限公司 | Environment detection device and method |
| US11619570B1 (en) | 2020-06-02 | 2023-04-04 | United States Of America As Represented By The Secretary Of The Air Force | Filter-based air sampler capable of integration into small unmanned aerial vehicles |
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