CN107843573A - The reflexive feedback system of Terahertz of air high-risk chemical detection - Google Patents
The reflexive feedback system of Terahertz of air high-risk chemical detection Download PDFInfo
- Publication number
- CN107843573A CN107843573A CN201711331533.8A CN201711331533A CN107843573A CN 107843573 A CN107843573 A CN 107843573A CN 201711331533 A CN201711331533 A CN 201711331533A CN 107843573 A CN107843573 A CN 107843573A
- Authority
- CN
- China
- Prior art keywords
- risk chemical
- air high
- detection device
- risk
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000126 substance Substances 0.000 title claims abstract description 192
- 238000001514 detection method Methods 0.000 title claims abstract description 141
- 238000009826 distribution Methods 0.000 claims description 65
- 238000012545 processing Methods 0.000 claims description 15
- 238000005070 sampling Methods 0.000 claims description 13
- 238000003384 imaging method Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 239000013626 chemical specie Substances 0.000 abstract description 4
- 230000003252 repetitive effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 27
- 239000002341 toxic gas Substances 0.000 description 27
- 239000007789 gas Substances 0.000 description 12
- 239000000523 sample Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000005086 pumping Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000001328 terahertz time-domain spectroscopy Methods 0.000 description 2
- 238000000411 transmission spectrum Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 208000036829 Device dislocation Diseases 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 241001062009 Indigofera Species 0.000 description 1
- 241001463139 Vitta Species 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000002044 microwave spectrum Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012852 risk material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention relates to a kind of reflexive feedback system of Terahertz of air high-risk chemical detection, the system includes：Detection device, mechanic adjustment unit, processor and moving bearing device, the detection device are used for atmospheric sounding high-risk chemical air high-risk chemical species and concentration information；The mechanic adjustment unit is used for the position for adjusting the detection device；The processor be used to handling the detection to air high-risk chemical species and concentration information and control the mechanic adjustment unit and the moving bearing device, the moving bearing device is used to carrying the air high-risk chemical system air high-risk chemical to be moved in space；Described mechanic adjustment unit one end is connected with the bogey, and the other end is connected with the detection device.The reflexive feedback system detecting location adjustability is high, and space exploration coordinate purpose is high, and repetitive rate is small.
Description
Technical field
The present invention relates to a kind of Environmental security field, more particularly to a kind of terahertz for the detection of air high-risk chemical
Hereby reflexive feedback system.
Background technology
Developed rapidly with the increasingly serious and chemical industry of non-traditional threat, countries in the world face increasingly tight
High gas attack of terrorism threat and high-risk chemical industrial spill accident threaten, such as Tokyo Schain poison gas
Attack and the explosion accident of PORT OF TIANJIN 8.12 in China.In face of high-risk chemical blast or attack of terrorism scene, live air
Spatial distribution and the dynamic process detection of high-risk chemical are often the key of emergency disposal, and are still so far international forward position
Focus and technical barrier.
Traditional detection means is often fixed detection mode, such as airport security device, or man-hour manually hand-held device.But
It is that traditional device can only be often tested certain point, underaction.
The content of the invention
Based on this, it is necessary to the problem of for above-mentioned traditional detection means underaction, there is provided it is a kind of flexibly, easy detection
The device of air high-risk chemical.
A kind of reflexive feedback system of Terahertz of air high-risk chemical detection, the system include：
Detection device, the detection device are used for atmospheric sounding high-risk chemical information；
Mechanic adjustment unit, the mechanic adjustment unit are connected with the detection device, for adjusting the detection device
Height and orientation, to obtain the air high-risk chemical information of different height and orientation；
Moving bearing device, the moving bearing device carries the mechanic adjustment unit, and drives the detection device
Moved in space, to obtain the air high-risk chemical information of diverse location；
Processor, the processor are used to handle the air high-risk chemical information that the detection device is detected, and
According to the result of air high-risk chemical information feedback, control mechanic adjustment unit regulation height, orientation with
And the moving bearing device movement, and imaging is carried out to the air high-risk chemical information.
In one of the embodiments, the detection device includes transmission-type terahertz time-domain system.
In one of the embodiments, air humidity detector is also included in the detection device.
In one of the embodiments, the terahertz time-domain system includes air high-risk chemical sampling room, described big
Gas high-risk chemical sampling room is in communication with the outside, and the terahertz time-domain system is used for air high-riskization in the sampling room
Product are detected, and obtain air high-risk chemical information.
In one of the embodiments, the moving bearing device includes casing；The mechanic adjustment unit is arranged on institute
State on moving bearing device, the processor is located in the casing.
In one of the embodiments, the mechanic adjustment unit includes telescope support and cantilever, the telescope support with
The moving bearing device connection；Described cantilever one end is connected with the telescope support, and the other end is connected with the detection device.
In one of the embodiments, the telescope support is connected by spring card slot with the cantilever, the Spring Card
Groove moves up and down for adjusting the cantilever, and drives the detection device to move up and down.
In one of the embodiments, the telescope support is connected by rotating shaft with the moving bearing device.
In one of the embodiments, the rotating shaft is used to adjust described 360 ° of rotations of telescope support progress, described flexible
Support drives the detection device to carry out 360 ° of rotations by the cantilever.
In one of the embodiments, the processor includes data processing module and control module, the data processing
The computing that module is carried out includes the sort operation to air high-risk chemical information progress, source of leakage judges computing, data
Fitting operation, imaging importing computing, coordinate, which overlap, judges computing, and the control module is used for according to the data processing module
Operation result sends instruction to the air high-risk chemical spatial distribution detection device, and drives the air high-risk chemical
Spatial distribution detection device moves.
The above-mentioned reflexive feedback system of Terahertz for the detection of air high-risk chemical, air high-risk chemical can be realized
360 ° of rotatable, translatable isotropism detections, change passive detection contact the result of detection in region into active detecting
Get up, environment is detected suitable for the air high-risk chemical of complexity.
Brief description of the drawings
Fig. 1 is the reflexive feedback system of Terahertz for the air high-risk chemical detection that one embodiment provides；
Fig. 2 is the structure chart of the telescope support that one embodiment provides and cantilever；
Fig. 3 is the transmission-type terahertz time-domain system that one embodiment provides；
Fig. 4 is the method flow diagram for the terahertz detection air high-risk chemical concentration distribution that one embodiment provides；
Fig. 5 is the method flow diagram for the single high-risk chemical source of leakage of terahertz detection that one embodiment provides；
Fig. 6 is the method flow diagram that the judgement detection device that one embodiment provides reaches source of leaks；
Fig. 7 is multiple high-risk chemical source of leaks detection method flow charts that one embodiment provides；
Fig. 8 is provided when detection tri- kinds of air high-risk chemicals of a, b, c for one embodiment, sets the rotation of specific rotating shaft
The method flow diagram of the wicking height of gyration and telescope support；
Fig. 9 is a certain air high-risk chemical concentration result of detection distribution map that one embodiment provides；
Figure 10 is that a variety of air high-risk chemical concentration result of detections that one embodiment provides are distributed stacking chart.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples pair
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Referring to Fig. 1, a kind of reflexive feedback system of Terahertz of air high-risk chemical detection is provided in one embodiment
1000, described device includes：
Detection device 100, the detection device 100 are used for atmospheric sounding high-risk chemical information.
Specifically, detection device 100 is to be used to sample air high-risk chemical, and obtain air high-risk chemical
The device of Terahertz feature, air high-risk chemical information specifically include air high-risk chemical concentration information and air high-riskization
Learn kind category information.
Mechanic adjustment unit 110, the mechanic adjustment unit 110 are connected with the detection device 100, described for adjusting
The height and orientation of detection device 100, to obtain the air high-risk chemical information of different height and orientation.
Mechanic adjustment unit 110 is carried out pair by mechanical structure according to the instruction of processor to the position of detection device 100
It should adjust, include the height and orientation of regulation detection device 100, be sat so as to change the three-dimensional of 100 stop places of detection device
Mark (x, y, z), including abscissa x, ordinate y and vertical coordinate z.Specifically, mechanic adjustment unit regulation detection device 100
Three-dimensional coordinate, to obtain the air high-risk chemical concentration distribution in three dimensions under different three-dimensional coordinates, obtain (n, a, b,
C), including air high-risk chemical concentration n, abscissa a, ordinate b and vertical coordinate c.When detection device 100 exists
(x1,y1,z1) detect air high-risk chemical concentration distribution coordinate (n1,a1,b1,c1) when, then there is x1=a1,y1=b1,z1=
c1。
Moving bearing device 120, the moving bearing device 120 carry the mechanic adjustment unit 110, and described in drive
Detection device 100 moves in space, to obtain the air high-risk chemical information of diverse location.
Wherein moving bearing device 120 can mechanically connect with mechanic adjustment unit 110, and mechanic adjustment unit 110 is settable
In on moving bearing device 120, moved with the movement of moving bearing device 120.It is similar, mechanic adjustment unit 110 with
Detection device 100 mechanically connects, and is moved with the movement of moving bearing device 120.Moving bearing device 120 passes through movement
Mechanic adjustment unit 110 is carried out movement detector 100 and moved in space, and moving bearing device 120 is for detection device 100
Movement can be to move horizontally；Meanwhile mechanic adjustment unit 110 can adjust the height and orientation of detection device 100 simultaneously.
Processor 130, the processor 130 are used to handle the high-risk chemistry of air that the detection device 100 is detected
Product information, and according to the result of air high-risk chemical information feedback, to control the mechanic adjustment unit to adjust high
Degree, orientation and moving bearing device movement, and the air high-risk chemical information is handled.
Processor 130 be information receive center, Information Analysis Center, feedback information generation center, information dispatching centre with
And control centre, be the detection accuracy for realizing air high-risk chemical detection system device.
In one of the embodiments, the moving bearing device includes casing 121；The mechanic adjustment unit is arranged on
On the moving bearing device, the processor 130 is located in the casing 121.Specifically, mechanic adjustment unit can be by turning
Axle 113 is connected with moving bearing device, and rotating shaft can carry out 360 ° of rotations, so as to which driving mechanical adjusting means carries out 360 ° of rotations
Turn.For example, rotating shaft can carry out 360 ° of rotations in the horizontal direction, so that detection device 100 is at difference
Orientation, i.e., different (x, y) coordinates.In one of the embodiments, processor is placed in casing 121, has guarantor to processor
Shield acts on.Specifically, the move mode of mobile bearing mode is unlimited, and moving bearing device 120 may include universal wheel 126, pulley
And other can realize that the device or method of moving bearing device movement all may be used.
In one of the embodiments, the processor 130 may include data processing module and control module, the data
The computing that processing module is carried out includes being used for sort operation, the source of leakage judgement fortune for carrying out the air high-risk chemical information
Calculation, data fitting operation, imaging importing computing, coordinate, which overlap, judges computing, and the control module is used at according to the data
The operation result of reason module sends instruction to the air high-risk chemical spatial distribution detection device 100, and drives described big
Gas high-risk chemical spatial distribution detection device 100 moves.
In one embodiment, the reflexive feedback system detection device 100 of Terahertz of air high-risk chemical detection is terahertz
Hereby time domain system, including air high-risk chemical sampling room 1021.
In addition, Terahertz air high-risk chemical detection system 1000 also includes feedback and instruction transmission electric wire 122, it is used for
The result of detection of detection device 100 is received, and result of detection is transmitted to processor 130, and the control that processor 130 is exported
Instruction passes to moving bearing device and mechanic adjustment unit, to control moving bearing device movement, adjustment mechanic adjustment unit,
Such as height of telescoping shoring column 113 etc..
Meanwhile Terahertz air high-risk chemical detection system 1000 may also include power set 124, the power set
124 may be disposed in moving bearing device 120；The power set 124 can be battery, be Terahertz air high-risk chemical
Detection system provides power.
The detection device 100 may include terahertz time-domain system, and further, detection device 100 may include transmission-type too
Hertz time domain system, for being detected by THz wave to object.
Also referring to Fig. 2, in one of the embodiments, the mechanic adjustment unit 110 includes the He of telescope support 114
Cantilever 112, telescope support 114 have neck 1141, and neck 1141 is used to cantilever 112 being fixed on telescope support 114；Neck
Spring 1142 is provided with 1141, spring 1142 controls the vertical height of cantilever to change by self-deformation, and then controls detection
Device height change.The telescope support is connected with the moving bearing device；Described one end of cantilever 112 and the telescope support
Connection, the other end are connected with the detection device 100.
Optionally, the connected mode of telescope support and cantilever is not limited to spring card slot connection, and other can realize flexible branch
Frame control cantilever carries out the connected mode of height change.
Also referring to Fig. 3, there is provided a kind of terahertz time-domain system of air high-risk chemical, the time domain system bag
Include：Laser generator 301, for producing pumping pulse and direct impulse；Delayer 307, produced for receiving laser generator 301
Raw pumping pulse laser, and adjust the time delay of pumping pulse and direct impulse caused by laser generator 301.Signal produces
Raw device 302, for launching terahertz signal；Terahertz detection device 303, for being sampled to the air high-risk chemical in environment
Detection；Signal receiver 304, visited for finishing receiving air high-risk chemical information in air high-risk chemical sampling room 1021
The terahertz signal of survey；Signal processor 305, for being analyzed and processed to the terahertz signal received, obtain air height
Danger chemical information.
In one embodiment, the laser generator 301 includes femtosecond laser 3011 and beam splitter 3012；The signal
Generator 302 includes lens, for producing terahertz signal；The terahertz detection device 303 is carrying air high-riskization
Product sample 3031, the first off axis paraboloidal mirror 3032, the second off axis paraboloidal mirror 3033, the 3rd off axis paraboloidal mirror 3034,
4th off axis paraboloidal mirror 3035.Wherein, first off axis paraboloidal mirror 3032 is relative with the second off axis paraboloidal mirror 3033
Set, the 3rd off axis paraboloidal mirror 3034 is oppositely arranged with the 4th off axis paraboloidal mirror 3035.The signal receiver 304
Including lens, for receiving terahertz signal；The signal processor 305 includes lock-in amplifier 3051 and signal processing apparatus
3052；
In one of the embodiments, the femtosecond laser 3011 that femto-second laser is sent is divided into two beam arteries and veins by beam splitter 3012
Punching, respectively pumping pulse and direct impulse.Wherein pumping pulse reaches delayer 307, incident after delayer 307
Into lock-in amplifier 3051；Wherein direct impulse and terahertz pulse caused by signal generator 302 is off-axis through the 3rd successively
Paraboloidal mirror 3034, the first off axis paraboloidal mirror 3032 are incided on air high-risk chemical sample 3031, to air high-riskization
Product sample 3031 is detected, and obtains result of detection signal, then through the second off axis paraboloidal mirror 3033, the 4th off axis paraboloid mirror
The arriving signal receiver 304 of mirror 3035.Delayer 307 adjusts the time delay between pumping pulse and direct impulse, so as to change
Become the time that detection light reaches terahertz detector.Using different detection light arrival times, Terahertz electric-field intensity is with the time
Variable quantity can be measured.Signal processing apparatus 3052 is analyzed and located to the Terahertz electric-field intensity amount of changing with time
Reason, such as Fourier transformation is carried out, transmission spectrum is obtained, gained transmission spectrum is analyzed to obtain air high-risk chemical
Species and concentration information；
In one of the embodiments, air high-risk chemical sample 3031 is placed in air high-risk chemical sampling room 1021
In (not marked in figure), the air high-risk chemical sampling room 1021 in the terahertz time-domain system is in communication with the outside, described
Terahertz time-domain system is used to carry out the air high-risk chemical sample 3031 of the air high-risk chemical sampling room 1021
Detection, obtains the air high-risk chemical information.In conventional art, air high-risk chemical is placed in air chamber and surveyed
Examination, but during being detected by air chamber, certain loss of THz wave can be caused, while the material of air chamber can also be made
Into certain property delayed of spectrum, so that result of detection is inaccurate.
In toxic gas leakage scene or explosion scene, air chamber sampling is often not easy to, and needs to obtain in real time, really
Live air high-risk chemical species and concentration levels, then then need detector to be placed directly within atmospheric environment and contacted
The measurement of formula.
In one of the embodiments, air humidity tester is also installed on the terahertz time-domain system probe.Due to
Absorption of the vapor for Terahertz is very strong, therefore can select to eliminate vapor to result of detection using " making poor method "
Influence, the Terahertz collection of illustrative plates that gained Terahertz collection of illustrative plates subtracts the vapor of existing same concentration in database will be detected, so as to
The Terahertz profile information of corresponding air high-risk chemical to be measured is obtained, and then judges the kind of high-risk air high-risk chemical
Class and concentration information.
In one of the embodiments, testing time 20ps is chosen, the Terahertz of 1-2THz wave bands is tested air,
Obtain collection of illustrative plates；By Terahertz pop one's head on subsidiary air humidity tester atmospheric humidity is tested, it is relative to obtain air
Humidity is 5%；For relative air humidity when 5%, sampling time is respectively 20ps, water is in 1~3THz wave bands in called data storehouse
Absworption peak collection of illustrative plates；The collection of illustrative plates of measurement is subtracted into database collection of illustrative plates, you can obtain characteristic peak collection of illustrative plates；To the finger in characteristic peak collection of illustrative plates
The frequency at line peak and peak height carry out database and compare and calculate, you can obtain high-risk substance classes of air under real time environment with it is dense
Degree.
Also referring to Fig. 4, a kind of high-risk chemical source of leaks detection method based on Terahertz, methods described includes：
S402, the air high-risk chemical concentration distribution information of current location is obtained by detection device；
S404, according to the air high-risk chemical concentration distribution information acquisition target acquisition position, and detection is driven to fill
Put and march to the target acquisition position；
S406, the air high-risk chemical concentration distribution information of the target acquisition position is obtained again；According to the mesh
The air high-risk chemical concentration distribution information of mark detecting location obtains next target acquisition position；Obtain multigroup detecting location
Air high-risk chemical concentration distribution information；
S408, at air high-risk chemical concentration distribution information transmission to the processing system of multigroup detecting location
Reason；Export air high-risk chemical spatial distribution image information.
In one of the embodiments, the detection device is terahertz time-domain system and device.
Specifically, THz wave is electromagnetic wave of the frequency in the range of 0.l~10THz (wavelength is 3mm~30 μm).Terahertz
Can hereby occur fully effect, therefore in terms of environmental monitoring with many special materials, Terahertz be suitable for solid, liquid,
The research of the electricity, acoustic properties of the medium such as air high-risk chemical and fluid, it can also be used to pollutant monitoring, biological and chemical
The quality control of detection and the food industry of material.
THz wave has a broadband property, and the frequency band of single terahertz-wave pulse can be covered from several hertz to tens terahertzs
Hereby, detection device can be by fourier transform infrared spectroscopy, microwave spectrum, far-infrared laser, non-linear frequency mixing technology, remote
Echelette spectrum and the equally method of energy atmospheric sounding high-risk chemical information, are detected to detected object.Specifically,
The light source of terahertz time-domain spectroscopy is terahertz pulse of the pulsewidth in picosecond level, and its temporal resolution can reach psec；
Terahertz time-domain spectroscopy is measured for being measured to the electric field of terahertz pulse, belongs to coherent measurement, not only including amplitude
Information, while the information comprising phase, the refractive index of sample can be directly obtained；It is in addition, high-risk for some macromolecular air
Chemicals, the absworption peak that the spectral line obtained using THz wave is obtained is more sharp, and line style is overlapping less so that air is high-risk
The discrimination of chemicals is more prone to.Especially, many air high-risk chemicals have unique absorption spectra in THz wave spectral coverage
Line, terahertz time-domain spectroscopic technology can be utilized to measure the composition of air high-risk chemical, concentration etc.；Meanwhile terahertz
Hereby spectral technique can be used for the absorption for measuring heterogeneity in hybrid atmospheric high-risk chemical, and it is high-risk to determine hybrid atmospheric
The chemical composition of chemicals and the concentration of each component, there is higher accuracy.
Specifically, compared to other detection means, it has good THz wave in many dielectric materials and nonpolar liquid
Good penetrability, therefore THz wave can carry out perspective imaging to opaque object.Further, since the typical ripple of Terahertz
The yardstick of the long soot dust granule being much larger than in air, these scatterings of soot dust granule to suspend to THz wave are much smaller than to other
The scattering of electromagnetic wave, therefore detection means can be made in complex site environment.
Specifically, THz wave has fingerprint spectrality, has the absworption peak and reflection peak of different frequency to different materials,
The species of air high-risk chemical material can be efficiently and accurately demarcated according to the existing finger print information of database；Simultaneously can root
The concentration of air high-risk chemical is judged according to the feature of vibration amplitude.Optionally, air is judged according to the feature of vibration amplitude
The method of high-risk chemical concentration includes the ratio between the size according to characteristic peak, amplitude of peak according to characteristic peak and is equal to
The ratio between air high-risk chemical concentration or and other sides that can reflect vibration amplitude and air high-risk chemical concentration relationship
Method.
Specifically, terahertz emission belongs to the category of submillimeter wave, and its photon energy and characteristic temperature are very low.One frequency
Energy for 1THz photon is 4.1MeV, and corresponding to 33 wave beams, its characteristic temperature is 48K, less than the key of various chemical bonds
Can, and the photon energy required for ionized biological tissue will generally reach 16eV, thus it is electric far from biological tissue or cell is made
From, therefore harmful ionization reaction will not be caused, suitable for the occasion that explosive diffuses He the crowd is dense.
In one of the embodiments, the terahertz time-domain system is transmission-type terahertz time-domain system.Optionally too
Hertz time domain system is not limited to transmission-type, can also select reflective, differential type, ellipse formula partially and can atmospheric sounding it is high-risk
Other time domain systems of chemicals and high-risk material are popped one's head in.
In one of the embodiments, the acquisition methods of target acquisition position include described in step S404：
All concentration distribution information acquired in three-dimensional coordinate are ranked up, obtain concentration peak in three-dimensional coordinate
Direction be the detection device direct of travel；
The driving detection device marches to the target acquisition position along the direct of travel.
Specifically, the target acquisition position refers to, detection device is according to the result of detection of current location, it is determined that in next step
The position that will be detected.Three-dimensional coordinate includes abscissa x, ordinate y and vertical coordinate z.It is described to being obtained in three-dimensional coordinate
All concentration distribution information taken are ranked up, and are that all concentration acquired in three-dimensional coordinate are carried out with row from big to small
Sequence, obtains the coordinate of the maximum point of concentration, i.e. the coordinate (x ', y ', z ') of target acquisition position.
In one of the embodiments, it is described that all concentration distribution information acquired in the three dimensions of current location are entered
Row sequence, including all concentration distribution information acquired in the three dimensions of current location are arranged by Bubble Sort Algorithm
Sequence.
Specifically, it is described according to the air high-risk chemical concentration distribution information acquisition target acquisition position, and drive
Detection device marches to the target acquisition position, including：
S4041, all concentration distribution information acquired in the three dimensions of current location are ranked up, obtain three-dimensional space
The direction of interior peak concentration, the direct of travel as the detection device；
S4042, the detection device is driven to march to the target acquisition position to the direct of travel.
In one of the embodiments, it is described that all concentration distribution information acquired in the three dimensions of current location are entered
Row sequence, including all concentration distribution information acquired in the three dimensions of current location are arranged by Bubble Sort Algorithm
Sequence.Optionally, the method being ranked up to all concentration distribution information acquired in the three dimensions of current location is not limited to emit
Bubble sequence, in addition to simple selection sequence, Straight Insertion Sort, Shell sorting, heapsort, merger sequence, quicksort and
Other can realize the algorithm of sequence.
In one of the embodiments, it is described according to the air high-risk chemical concentration distribution information acquisition target acquisition
Position, and drive detection device to march to the target acquisition position and may also include：
S4041 ', to the air high-risk chemical concentration information averaged in the different height of current location, put down
The object height z that equal concentration highest is highly advanced for detection device；
S4042 ', the concentration of the different angle in the mean concentration highest height is ranked up, obtained described flat
Concentration highest angle is the angle on target of the drive device in equal concentration highest height；
S4043 ', the detection device is driven to march to the target acquisition position according to the object height and angle on target
Put.Specifically, the angle on target is in a horizontal plane, using detection device as origin, with former direction of advance for reference to (i.e.
0 ° is used as using the vectorial angle of former direction of advance), origin points to the vectorial and former direction of advance angle of target acquisition position.
In one of the embodiments, in step S408, multigroup a certain air high-risk chemical can be distributed
Concentration information be sent to data handling system and handled.
In one of the embodiments, according to the air high-risk chemical concentration distribution of the current location in step S408
Information, the air high-risk chemical concentration distribution information of the target acquisition position, export air high-risk chemical spatial distribution
The step of image information air high-risk chemical, includes：
S4081, the concentration information that multigroup a certain air high-risk chemical is distributed relative to three-dimensional coordinate is sent
Numerical fitting is carried out to numerical fitting system, obtains a certain air high-risk chemical relative to continuously distributed dense of three-dimensional coordinate
Spend information；
S4082, the concentration information continuously distributed relative to three-dimensional coordinate is identified, it is high to obtain a certain air
Danger chemicals spatial distribution map.
In one of the embodiments, in step S4122, the concentration continuously distributed relative to three-dimensional coordinate is believed
Breath carries out colour code, such as area with high mercury is identified with light colour, and low concentration region is represented with dark colour, or, with indigo plant
Color table shows a kind of air high-risk chemical, and another air high-risk chemical is represented with red.
Optionally, the concentration information continuously distributed relative to three-dimensional coordinate is not limited to carry out colour code, also
Can carry out words identification, picture identification and other can reflect the identification method of air high-risk chemical concentration information.
In one of the embodiments, the air high-risk chemical concentration distribution information according to the current location,
The air high-risk chemical concentration distribution information of the target acquisition position, obtain air high-risk chemical spatial distribution image it
Also include afterwards：
S4083, different types of air high-risk chemical is detected respectively by multiple detection devices, obtained
The spatial distribution image of a variety of variety classes air high-risk chemicals；
S4084, different types of air high-risk chemical distributed image is overlapped processing, obtains variety classes
Air high-risk chemical spatial distribution superimposed image, and by the variety classes air high-risk chemical spatial distribution superimposed image
Output.
In one of the embodiments, a kind of computer-readable recording medium is also provided, is stored thereon with computer program,
During so that the program being executed by processor, in achievable any of the above-described embodiment the step of method.
Please refer to fig. 5, a kind of single high-risk chemical source of leaks detection method based on Terahertz, methods described bag
Include：
S502, the air high-risk chemical concentration distribution information of current location is obtained by detection device；
S504, according to the air high-risk chemical concentration distribution information acquisition target acquisition position, and detection is driven to fill
Put and march to the target acquisition position；
S506, the air high-risk chemical concentration distribution information of the target acquisition position is obtained again, according to the mesh
The air high-risk chemical concentration distribution information of mark detecting location obtains next target acquisition position, until next target is visited
The air high-risk chemical concentration that location is put is peak value, reaches S508 at air high-risk chemical source of leaks, according to described current
Air high-risk chemical concentration distribution information, the concentration distribution information of the target acquisition position of position, it is high-risk to obtain air
Chemicals spatial distribution image information.
It is wherein step S502, step S504, step S508 and S402, S404, S408, essentially identical, it will not be repeated here.
Particularly, S506 in one of the embodiments, when the air high-risk chemical of next target acquisition position is dense
Spend for peak value when, reach air high-risk chemical source of leaks at.
The air high-risk chemical source of leaks is the position in region, can set detection device detection it is adjacent
The distance of two detecting locations is a step-length.
In one embodiment, when the air high-risk chemical peak concentration point determination methods using the S4041,
During S4042 method, air high-risk chemical source of leaks is using detection gained air high-risk chemical peak concentration point as origin
Sphere using a step-length as radius.
In one embodiment, described in being used when the determination methods of the air high-risk chemical peak concentration point
S4041 ', S4042 ' method when, air high-risk chemical source of leaks is that the gas concentration peak point in corresponding height is origin
Border circular areas using a step-length as radius.Optionally, air high-risk chemical leakage source region selection mode be not limited to
Upper two kinds, in varied situations, it can flexibly use multiple choices mode.
Please with reference to Fig. 6, a kind of single air high-risk chemical source of leaks detection method based on Terahertz, the side
Method includes：
S602, the air high-risk chemical concentration distribution information and peak value of current location are obtained by detection device；
S604, according to the air high-risk chemical concentration distribution information acquisition target acquisition position, and detection is driven to fill
Put and march to the target acquisition position；
S606 obtains the air high-risk chemical concentration distribution information and peak value of the target acquisition position again, according to institute
The air high-risk chemical concentration distribution information and peak value for stating target acquisition position obtain next target acquisition position, and again
Driving detection device marches to next target acquisition position；
S608, if the magnitude relationship between the peak value of multiple target acquisition positions meets preparatory condition, according to more
The peak value of the individual target acquisition position obtains the positional information of air high-risk chemical source of leaks；
S610, according to the air high-risk chemical concentration distribution information of the current location, the target acquisition position
Air high-risk chemical concentration distribution information, obtain air high-risk chemical spatial distribution image information.
Wherein S602, S604, S606, S610, with S502, S504 in specification, S506, S510, essentially identical, herein not
Repeat again；
Particularly, in one of the embodiments, if magnitude relationship between the peak value of multiple target acquisition positions
Meet preparatory condition, then the position that air high-risk chemical source of leaks is obtained according to the peak value of multiple target acquisition positions is believed
Breath specifically includes：
The air for comparing continuous two target acquisition positions after the current location and the current location is high-risk
The peak value of chemical concentration；
If the peak value of the air high-risk chemical concentration of continuous two target acquisition positions is small after the current location
In the peak value of the air high-risk chemical concentration of the current location, then judge the current location for the high-risk chemistry of the air
Product source of leaks.
In one of the embodiments, if the magnitude relationship between the peak value of multiple target acquisition positions meets to preset
Condition, the then positional information that air high-risk chemical source of leaks is obtained according to the peak value of multiple target acquisition positions are specifically gone back
Including：
If the peak value of the air high-risk chemical concentration of the first aim detecting location after the current location is less than
The peak value of the air high-risk chemical concentration of the current location, and the second target detecting location after the current location
Air high-risk chemical peak concentration be more than the current location air high-risk chemical peak concentration, then continue to compare institute
Peak value and the current location for stating the air high-risk chemical concentration of the 3rd target acquisition position after current location are big
The size of gas high-risk chemical concentration；
If the peak value of the air high-risk chemical concentration of the 3rd target acquisition position after the current location is less than
The peak value of the air high-risk chemical concentration of the current location, then the current location is air high-risk chemical leakage
Source.
Also referring to Fig. 7, a kind of method of multiple high-risk chemicals leakage source detection based on Terahertz, methods described
Including：
S702, the concentration distribution information of the high-risk chemical of current detecting location is obtained by detection device；
S704, target acquisition position is drawn according to the high-risk chemical concentration distribution information, driving detection device is advanced
To the target acquisition position；
S706, the concentration distribution information of the target acquisition position is obtained again,
Next target acquisition position, institute are obtained according to the high-risk chemical concentration distribution information of the target acquisition position
When stating all source of leaks of a certain high-risk chemical in detection device acquisition search coverage, the high-risk of multigroup detecting location is obtained
Chemical concentration distributed intelligence；
S708, Gas concentration distribution information transmission to the data handling system of multigroup detecting location is handled,
Obtain high-risk chemical spatial distribution image information.Wherein S702, S704, S708 and step S602, the S604 in specification,
S608 corresponding steps are essentially identical, will not be repeated here.
Particularly, in one of the embodiments, when air high-risk chemical space exploration imaging method detection obtains
When obtaining all source of leaks of a certain air high-risk chemical in search coverage, the coordinate where the detection device is the end
Point coordinates.
In one of the embodiments, judge that the detection device obtains a certain air high-risk chemical in search coverage
The methods of all source of leaks include：Obtained down according to the air high-risk chemical concentration distribution information of the target acquisition position
One target acquisition position, until the coordinate of next target acquisition position overlaps with the coordinate of any detecting location before,
Then judge that the detection device obtains all source of leaks of a certain air high-risk chemical in search coverage.
In one of the embodiments, also referring to Fig. 8, it is described until the coordinate of next target acquisition position therewith
The coordinate of preceding any detecting location overlaps, then judges that the detection device obtains a certain air high-riskization in search coverage
The method of all source of leaks of product includes：
Obtain the coordinate of each target acquisition position and store in the processing system；
The coordinate of each target acquisition position of the processing system to getting carries out data analysis；
Coordinate when next target acquisition position that processing system detects and the target acquisition position before any one
When the coordinate put overlaps；
Halt instruction is sent to detection device；
The detection device stops detection.
Also referring to Fig. 8, additionally provide in one of the embodiments a kind of based on terahertz detection toxic gas
Method includes：
S802, detection device 100 are demarcated to gas componant, determine tri- kinds of toxic gases of a, b, c in marked gas；
S804, toxic gas a concentration is measured；
S8061, mechanic adjustment unit is adjusted, the runing rest of connection rotating shaft is rotated 0 °, 90 °, 180 °, 270 ° respectively；
S8062, telescope support is set to raise 1m, 10m, 20m, 30m height respectively；
S808, determine the concentration data under different coordinates；S809, concentration data is ranked up, determines detecting devices row
Enter direction and height；
If processor sends halt instruction；S812, all concentration datas are subjected to numerical fitting relative to coordinate；S814,
Continuous concentration data is transmitted back to headquarter and is imaged.
If processor does not send halt instruction, repeat step S802, S804, S8061, S8062, S808, S809.
The step of repeating S802, S804, S8061, S8062, S808, S809, S810, S812, S814 determines toxic gas b
And c, measure obtain toxic gas b, c concentration distribution information, then toxic gas a, b, c concentration distribution matrix is as follows：
By the respective concentration of toxic gas a, b, c according to sorting from big to small, such as a23>a13>a33>a43>…>a22>
a12>a32>A42, it is known that somewhere concentration axyMiddle x represents certain height, and y represents certain angle direction, so that it is determined that the direction of coordinate 2 → 3
For the most fast direction of air high-risk chemical a increasing concen-trations, height 2 is the maximum height of toxic gas a concentration, and coordinate 4 is to have
The minimum height of poisonous gas a concentration；By feeding back electric wire 122, instruction is sent to universal wheel 126, makes universal wheel along increasing concen-trations
Most fast direction, i.e., relative -135 ° of directions are advanced.All data are collected, by processor 130, by discrete concentration
Numerical fitting is carried out relative to coordinate, so as to obtain gas a, b, c relative to the continuous concentration distribution of three-dimensional coordinate；
Also referring to Fig. 9, Fig. 9 is poison gas a concentration result of detection distribution map, by that can be clearly seen than vitta,
Dark color represents low concentration air high-risk chemical, and light color represents high concentration air high-risk chemical, therefore light color aggregation position is
The higher position of poison gas a concentration, it is judged as poison gas a leakage source position, it is proposed that suppress position for poison gas emphasis.Light color arrives dark color
Bearing of trend, it is judged as poison gas a descending concentrations direction, it is proposed that be crowd's escape route；Dark color arrives light bearing of trend, is judged as
Poison gas a concentration sharp increase direction, it is proposed that evade route for crowd's emphasis.
Also referring to Figure 10, situation that Figure 10 a, b two kind poison gas are distributed in space, as seen from the figure, poison gas b distributions
In high-altitude, poison gas a is related situations such as this density and same day wind-force to gas in itself in low latitude.According to different types of gas
Space distribution situation can effectively carry out the sprinkling of corresponding chemical treatment medicament.Because low latitude poison gas is to the life of people
Security implication is big compared with high-altitude poison gas, and judges that poison gas a concentration is big relative to poison gas b, therefore answers priority treatment from shade
Poison gas a leakage.
Can be with accurate judgement poison gas a and poison gas b leakage situation, so as to help by intuitively showing for Fig. 9 and Figure 10
Poison gas Restrain measurement and crowd evacuation scheme are made in commanding.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of reflexive feedback system of Terahertz of air high-risk chemical detection, it is characterised in that the reflexive feedback system includes：
Detection device, the detection device are used for atmospheric sounding high-risk chemical information；
Mechanic adjustment unit, the mechanic adjustment unit are connected with the detection device, for adjusting the height of the detection device
Degree and orientation, to obtain the air high-risk chemical information of different height and orientation；
Moving bearing device, the moving bearing device carries the mechanic adjustment unit, and drives the detection device in sky
Interior movement, to obtain the air high-risk chemical information of diverse location；
Processor, the processor are used to handle the air high-risk chemical information that the detection device is detected, and according to
The result feedback of the air high-risk chemical information, control mechanic adjustment unit regulation height, orientation and the institute
Moving bearing device movement is stated, and imaging is carried out to the air high-risk chemical information.
2. reflexive feedback system according to claim 1, it is characterised in that when the detection device includes transmission-type Terahertz
Domain system.
3. reflexive feedback system according to claim 2, it is characterised in that also include air humidity in the detection device and visit
Survey device.
4. reflexive feedback system according to claim 2, it is characterised in that it is high-risk that the terahertz time-domain system includes air
Chemicals sampling room, the air high-risk chemical sampling room are in communication with the outside, and the terahertz time-domain system is used for described
High-risk chemical air high-risk chemical in sampling room is detected, and obtains the air high-risk chemical information.
5. reflexive feedback system according to claim 1, it is characterised in that the moving bearing device includes casing；It is described
Mechanic adjustment unit is arranged on the moving bearing device, and the processor is located in the casing.
6. reflexive feedback system according to claim 1, it is characterised in that the mechanic adjustment unit include telescope support and
Cantilever, the telescope support are connected with the moving bearing device；Described cantilever one end is connected with the telescope support, the other end
It is connected with the detection device.
7. reflexive feedback system according to claim 5, it is characterised in that the telescope support by spring card slot with it is described
Cantilever connects, and the spring card slot moves up and down for adjusting the cantilever, and drives the detection device to carry out up and down
It is mobile.
8. reflexive feedback system according to claim 5, it is characterised in that the telescope support passes through rotating shaft and the movement
Bogey connects.
9. reflexive feedback system according to claim 7, it is characterised in that the rotating shaft is enclosed for adjusting the telescope support
360 ° of rotations are carried out around the shaft, and the telescope support drives the detection device to carry out 360 ° of rotations by the cantilever.
10. reflexive feedback system according to claim 1, it is characterised in that the processor include data processing module and
Control module, the computing that the data processing module is carried out include transporting the sequence that the air high-risk chemical information is carried out
Calculation, source of leakage judge that computing, data fitting operation, imaging importing computing, coordinate overlap and judge computing, and the control module is used for
Instruction is sent to the air high-risk chemical spatial distribution detection device according to the operation result of the data processing module, and
The air high-risk chemical spatial distribution detection device is driven to move.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711331533.8A CN107843573A (en) | 2017-12-13 | 2017-12-13 | The reflexive feedback system of Terahertz of air high-risk chemical detection |
| PCT/CN2018/092436 WO2019114239A1 (en) | 2017-12-13 | 2018-06-22 | Terahertz detection method and system for highly hazardous chemical in atmosphere |
| US16/446,620 US20190302012A1 (en) | 2017-12-13 | 2019-06-20 | Terahertz detection method and system for high-risk chemical in atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711331533.8A CN107843573A (en) | 2017-12-13 | 2017-12-13 | The reflexive feedback system of Terahertz of air high-risk chemical detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107843573A true CN107843573A (en) | 2018-03-27 |
Family
ID=61664968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711331533.8A Pending CN107843573A (en) | 2017-12-13 | 2017-12-13 | The reflexive feedback system of Terahertz of air high-risk chemical detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107843573A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900656A (en) * | 2019-04-12 | 2019-06-18 | 西南石油大学 | One kind can pinpoint infrared methane measuring device and measuring method |
| CN111579715A (en) * | 2020-04-20 | 2020-08-25 | 五邑大学 | Gas early warning device and method and computer readable storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074500A1 (en) * | 2000-12-15 | 2002-06-20 | Samuel Mickan | Diagnostic apparatus using terahertz radiation |
| CN103163145A (en) * | 2011-12-08 | 2013-06-19 | 韩国电子通信研究院 | Terahertz continuous wave system and method of obtaining three-dimensional image thereof |
| CN105301190A (en) * | 2015-10-15 | 2016-02-03 | 康俊瑄 | Chemical accident site poisonous gas monitoring system and emergency processing method thereof |
| CN106813779A (en) * | 2016-12-25 | 2017-06-09 | 中国科学院紫金山天文台 | A kind of full-automatic Terahertz atmospheric characteristic measuring system and its calibration method |
| CN107421915A (en) * | 2017-09-08 | 2017-12-01 | 中国工程物理研究院流体物理研究所 | A kind of living cells based on terahertz time-domain decay total reflection spectrum monitors experimental method in real time |
| CN207742107U (en) * | 2017-12-13 | 2018-08-17 | 清华大学 | The reflexive feedback system of Terahertz of air high-risk chemical detection |
-
2017
- 2017-12-13 CN CN201711331533.8A patent/CN107843573A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020074500A1 (en) * | 2000-12-15 | 2002-06-20 | Samuel Mickan | Diagnostic apparatus using terahertz radiation |
| CN103163145A (en) * | 2011-12-08 | 2013-06-19 | 韩国电子通信研究院 | Terahertz continuous wave system and method of obtaining three-dimensional image thereof |
| CN105301190A (en) * | 2015-10-15 | 2016-02-03 | 康俊瑄 | Chemical accident site poisonous gas monitoring system and emergency processing method thereof |
| CN106813779A (en) * | 2016-12-25 | 2017-06-09 | 中国科学院紫金山天文台 | A kind of full-automatic Terahertz atmospheric characteristic measuring system and its calibration method |
| CN107421915A (en) * | 2017-09-08 | 2017-12-01 | 中国工程物理研究院流体物理研究所 | A kind of living cells based on terahertz time-domain decay total reflection spectrum monitors experimental method in real time |
| CN207742107U (en) * | 2017-12-13 | 2018-08-17 | 清华大学 | The reflexive feedback system of Terahertz of air high-risk chemical detection |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900656A (en) * | 2019-04-12 | 2019-06-18 | 西南石油大学 | One kind can pinpoint infrared methane measuring device and measuring method |
| CN111579715A (en) * | 2020-04-20 | 2020-08-25 | 五邑大学 | Gas early warning device and method and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20190302012A1 (en) | Terahertz detection method and system for high-risk chemical in atmosphere | |
| CN108107017B (en) | Method based on the distribution of terahertz detection high-risk chemical | |
| CN106970392A (en) | High sensitivity gaseous contamination detecting laser radar system | |
| CN106769974B (en) | Gas concentration Two dimensional Distribution on-line detecting system and method | |
| CN109342350A (en) | A kind of pollutant distribution IR spectrum scanning imaging telemetry system | |
| CN110082335B (en) | Infrared, Raman and laser three-channel point-to-point real-time fusion measuring system | |
| CN108121777B (en) | The method of multiple high-risk chemicals leakage source detection based on Terahertz | |
| US11674895B2 (en) | System and method for monitoring an air-space of an extended area | |
| CN107843573A (en) | The reflexive feedback system of Terahertz of air high-risk chemical detection | |
| CN107976426A (en) | A kind of constituent of atomsphere detection system based on chevilled silk laser | |
| CN207742107U (en) | The reflexive feedback system of Terahertz of air high-risk chemical detection | |
| CN207610987U (en) | Terahertz detection air high-risk chemical distribution apparatus | |
| CN108169160B (en) | Single atmosphere high-risk chemical source of leaks detection method based on Terahertz | |
| CN110470615A (en) | A kind of chemical gas concentration monitoring method and system | |
| CN108828050A (en) | A kind of poison gas intelligent monitor system and monitoring method | |
| Yang et al. | Simultaneous detection of multiple gaseous pollutants using multi-wavelength differential absorption LIDAR | |
| Gaudio et al. | Lidar and Dial application for detection and identification: a proposal to improve safety and security | |
| CN113189039A (en) | Multi-phase state hazardous chemical substance three-dimensional detection system and method | |
| CN108169159B (en) | Atmosphere high-risk chemical spatial distribution judgment method based on Terahertz | |
| US8445850B2 (en) | Optical remote sensing of fugitive releases | |
| CN111122499A (en) | Radial plume multi-component gas measurement remote sensing system | |
| Puiu et al. | Lidar/DIAL detection of acetone at 3.3 μm by a tunable OPO laser system | |
| CA2087439C (en) | Ftir remote sensor apparatus and method | |
| US7894072B1 (en) | Laser-based gas differential spectral analysis | |
| Pasqualino et al. | Application of optical techniques to detect chemical and biological agents |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |