CN107703555A - A kind of dangerous matter sources detection method and system - Google Patents

A kind of dangerous matter sources detection method and system Download PDF

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Publication number
CN107703555A
CN107703555A CN201610445640.2A CN201610445640A CN107703555A CN 107703555 A CN107703555 A CN 107703555A CN 201610445640 A CN201610445640 A CN 201610445640A CN 107703555 A CN107703555 A CN 107703555A
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matter sources
light source
dangerous
dangerous matter
spectrum
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丁国锋
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BEIJING INTELLVISION TECHNOLOGY Co Ltd
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BEIJING INTELLVISION TECHNOLOGY Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10141—Special mode during image acquisition

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention, which provides a kind of dangerous matter sources detection method and system, this method, to be included：Obtain the spectral image data of the different-waveband in default zone of protection space；According to the difference or variable quantity of the spectral image data of the different-waveband calculated, the characteristic parameter of one or more dangerous matter sources in the default zone of protection space is obtained；After one or more of characteristic parameters are more than or equal to predetermined threshold value and continue preset time, triggering alarm, the characteristic parameter includes：Concentration, light extinction rate, temperature and/or the temperature difference of dangerous matter sources.This method is analyzed and processed by the spectral image data of the different-waveband to dangerous matter sources regional space, remote, one or more dangerous matter sources on a large scale monitoring and early warnings can be achieved, the incidence of the disastrous occurrence as caused by dangerous matter sources is reduced, so as to effectively avoid casualties and property loss.

Description

A kind of dangerous matter sources detection method and system
Technical field
The present invention relates to security technology area, more particularly to a kind of dangerous matter sources detection method and system.
Background technology
Harmful influence in the links such as industrial processes, finished product accumulating and Sales Channel all there is potential danger, If supervision is improper, dangerous matter sources are easily formed, cause the generation of disastrous occurrence.
Dangerous matter sources are mainly rendered as gas, liquid, flue gas, smog, dust, steam or the temperature formed under specific circumstances It is abnormal, therefore extremely early ground detecting early-warning is advantageous to avoid the generation of disastrous occurrence.And dangerous matter sources are directed in currently available technology Detecting and warning system can only be directed to specific point or line is detected and the form of detectable dangerous matter sources is mostly relatively simple, It can not realize that, to being detected while a regional space, so monitoring to harmful influence region is totally unfavorable.
The content of the invention
It is an object of the invention to provide dangerous matter sources detection method and system, can be achieved it is remote, a kind of on a large scale or The monitoring and early warning of a variety of dangerous matter sources, reduces the incidence of the disastrous occurrence as caused by dangerous matter sources, effectively avoid casualties and Property loss.
To achieve these goals, a kind of dangerous matter sources detection method provided in an embodiment of the present invention, including：
Obtain the spectral image data of the different-waveband in default zone of protection space；
According to the difference or variable quantity of the spectral image data of the different-waveband calculated, the default protection is obtained The characteristic parameter of one or more dangerous matter sources in regional space；
After one or more of characteristic parameters are more than or equal to predetermined threshold value and certain time, triggering report Alert, the characteristic parameter includes：Concentration, light extinction rate, temperature and/or the temperature difference of dangerous matter sources.
Wherein, the step of spectral image data for obtaining the different-waveband in default zone of protection space, includes：
Receive in default zone of protection space in the spectroscopic light source of different-waveband, artificial light source and/or space background objects from So spectrum, the spectrum include caused by radiation：Intrinsic response band spectrum and with reference to band spectrum；
Response processing is carried out to the spectrum, obtains the spectrum picture number of the different-waveband in the default zone of protection space According to the spectral image data includes：Intrinsic response band spectrum view data and reference wave band spectral image data.
Wherein, the response range of the spectrum is：280nm~20 μm.
Wherein, according to the difference or variable quantity of the spectral image data of the different-waveband calculated, obtain described pre- In shield of setting up defences regional space the step of the characteristic parameter of one or more dangerous matter sources, including：
Pre-processed respectively to the intrinsic response band spectrum view data and with reference to wave band spectral image data, Determine in the intrinsic response band spectrum view data intrinsic strength background value of corresponding pixel and with reference to band of light Compose the referenced strength background value of corresponding pixel in view data；
In intrinsic response band spectrum view data described in real-time detection the intrinsic measurement intensity value of corresponding pixel with And the reference measure intensity level with reference to corresponding pixel in wave band spectral image data；
To the intrinsic strength background value, the referenced strength background value, the intrinsic measurement intensity value and the ginseng Examine measurement intensity value and carry out processing calculating, obtain the feature ginseng of one or more dangerous matter sources in the default zone of protection space Number.
Wherein, carried out in advance to the intrinsic response band spectrum view data and with reference to wave band spectral image data respectively Processing, determine the intrinsic strength background value and reference wave of corresponding pixel in the intrinsic response band spectrum view data Include in section spectral image data the step of the referenced strength background value of corresponding pixel：
Obtain respectively the intrinsic initial intensity value of corresponding pixel in the intrinsic response band spectrum view data with And the reference initial intensity value with reference to corresponding pixel in wave band spectral image data；
The intrinsic initial intensity value and the initial intensity value that refers to are filtered respectively in the first predetermined period Popin estimates, obtain in the intrinsic response band spectrum view data intrinsic strength background value of corresponding pixel and The referenced strength background value of corresponding pixel in the spectral image data with reference to wave band.
Wherein, to the intrinsic strength background value, the referenced strength background value, the intrinsic measurement intensity value and institute State reference measure intensity level and carry out processing calculating, obtain the feature of one or more dangerous matter sources in the default zone of protection space The step of parameter, includes：
In the second predetermined period according to the ratio between the intrinsic measurement intensity value and the reference measure intensity level, described Levy the ratio between intensity background value and the referenced strength background value and formula Rt=R0·e-[(E(λl)-E(λr))·C·L], institute is calculated State the characteristic parameter of one or more dangerous matter sources in default zone of protection space；Wherein, RtRepresent the intrinsic measurement intensity value The ratio between with the ratio between the reference measure intensity level, R0Represent the intrinsic strength background value and the referenced strength background value it Than λ l represent intrinsic band wavelength, and λ r represent to refer to band wavelength, and E (λ) represents an exponential function, and L represents the length of light path, C Represent the concentration of dangerous matter sources.
Wherein, after one or more of characteristic parameters are more than or equal to predetermined threshold value and continue preset time, touch Alert step of transmitting messages includes：
Judge whether one or more of characteristic parameters are more than or equal to predetermined threshold value；
When one or more of characteristic parameters are more than or equal to predetermined threshold value, one or more dangerous matter sources are obtained Positional information, and trigger alarm.
Wherein, in addition to：
Obtain the visible images and visible images data of the different-waveband in the default zone of protection space；
The positional information and characteristic parameter are superimposed on the visible images by respective coordinates mapping.
The embodiment of the present invention also provides a kind of dangerous source detecting system, including：
Image detection unit, the spectral image data of the different-waveband for obtaining default zone of protection space；According to meter The difference or variable quantity of the spectral image data of the different-waveband calculated, one is obtained in the default zone of protection space Or the characteristic parameter of multiple dangerous matter sources；It is more than or equal to predetermined threshold value in one or more of characteristic parameters and persistently presets After time, triggering alarm, the characteristic parameter includes：Concentration, light extinction rate, temperature and/or the temperature difference of dangerous matter sources；
Monitoring device, it is connected with described image probe unit, for the characteristic parameter to one or more of dangerous matter sources And warning message is monitored and managed.
Wherein, in addition to：
One or more spectral emissions units, coordinate with described image probe unit, for according to default sequential to described Image detection unit launches the spectrum of the different-waveband of modulated processing.
Wherein, in addition to：
Spectroscopic light source reflecting plate, and the spectral emissions unit matching, for the light for launching the spectral emissions unit Spectrum reflexes to described image probe unit.
Wherein, described image probe unit includes：
Optical lens；
It is connected with the optical lens, obtains the spectrum of the spectral image data of the different-waveband in default zone of protection space Video camera；
It is connected with the spectrum camera, according to the difference of the spectral image data of the different-waveband calculated or change Change amount, the characteristic parameter of one or more dangerous matter sources in the default zone of protection space is obtained, and one or more of After characteristic parameter is more than or equal to predetermined threshold value and continues preset time, the core processor of alarm is triggered；
It is arranged between the optical lens and the spectrum camera, and is electrically connected with the core processor, will be from The spectral light that the optical lens enters is limited to send to the filter plate of the spectrum camera through the spectrum for presetting wave band and cut Changing device.
Wherein, the core processor is embedded core processor, including：
According to the difference or variable quantity of the spectral image data of the different-waveband calculated, the default protection is obtained The characteristic parameter of one or more dangerous matter sources in regional space, and be more than or equal in advance in one or more of characteristic parameters If after threshold value and lasting preset time, trigger the core processing circuit of alarm；
The input/output interface circuit being connected with the core processing circuit；
Electrically connect with the core processing circuit and input/output interface circuit, carried to described image probe unit First in-line power circuit of power supply source supply.
Wherein, the filter plate switching device includes：Specific band filter plate or multispectral filter plate runner system, it is described Multispectral filter plate runner system is provided with multiband filter plate.
Wherein, described image probe unit also includes：
Visible light lens；
It is connected with the visible light lens and the core processor, coordinates with the visible light lens respectively, obtains The visible images of different-waveband and the visible light camera of visible images data in the default zone of protection space.
Wherein, the spectral emissions unit includes：
Spectroscopic light source；
The light source circuit board with controlling the spectroscopic light source is driven, the spectral light is provided with the light source circuit board Source；
The side of the light source circuit board is arranged at, spectroscopic light source is formed the optical system of the transmitting light beam of predetermined angle System；
It is connected with the light source circuit board, the control board with control is modulated to spectroscopic light source；
It is connected with the control board, detects the photoelectric sensor of the attenuation degree of light source；
Electrically connected with the light source circuit board and the control board, power supply is provided to the spectral emissions unit Second in-line power circuit of supply.
Wherein, the spectroscopic light source includes the multiple light sources of different-waveband or the full spectrum with default spectral response range Light source.
Wherein, the spectral emissions unit also includes：
It is connected with the control board, is filled according to the modulation of source being modulated to spectroscopic light source default modulation period Put.
Wherein, the modulation of source device includes：The electrical modulation circuit or machinery being arranged on the light source circuit board are adjusted Device processed.
Wherein, machinery modulation device includes：Motor, it is connected with the gear train of the motor connection and with the gear train Modulation panel.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
In the such scheme of the embodiment of the present invention, pass through the spectral image data of the different-waveband to dangerous matter sources regional space Analyzed and processed, the characteristic parameter of one or more dangerous matter sources in the default zone of protection space is obtained, one Or after multiple characteristic parameters are more than or equal to predetermined threshold value and continue preset time, triggering alarm, so as to can realize it is remote, The monitoring and early warning of large-scale one or more dangerous matter sources, the incidence of the disastrous occurrence as caused by dangerous matter sources is reduced, so as to Effectively avoid casualties and property loss.
Brief description of the drawings
Fig. 1 is the basic step schematic diagram of the dangerous matter sources detection method of the embodiment of the present invention；
Fig. 2 is one of composition structural representation of dangerous source detecting system of the embodiment of the present invention；
Fig. 3 is the two of the composition structural representation of the dangerous source detecting system of the embodiment of the present invention；
Fig. 4 is the three of the composition structural representation of the dangerous source detecting system of the embodiment of the present invention；
Fig. 5 is one of composition structural representation of image detection unit in the dangerous source detecting system of the embodiment of the present invention；
Fig. 6 is two of the composition structural representation of image detection unit in the dangerous source detecting system of the embodiment of the present invention；
The concrete composition structured flowchart of core processor in the image detection unit that Fig. 7 is Fig. 5 or Fig. 6；
The concrete composition structured flowchart of spectral emissions unit in the dangerous source detecting system that Fig. 8 is Fig. 3 or Fig. 4；
Fig. 9 is that the different-waveband light source when spectroscopic light source of the embodiment of the present invention is the multiple light sources of different-waveband is opened and closed Timing diagram；
Figure 10 is the light source opening and closing timing diagram when spectroscopic light source of the embodiment of the present invention is full spectrum light source；
The wavelength of spectral emissions unit selects schematic diagram in the dangerous source detecting system that Figure 11 is Fig. 3 or Fig. 4；
Figure 12 is the schematic diagram that two wave band emission spectrum light sources that the embodiment of the present invention uses are decayed with the time；
Figure 13 be the embodiment of the present invention dangerous source detecting system in spectral emissions unit apply setting procedure schematic diagram；
Figure 14 is that the application setting procedure of the image detection unit in the dangerous source detecting system of the embodiment of the present invention is illustrated Figure；
Figure 15 is the detection schematic flow sheet of the image detection unit of the dangerous source detecting system of the embodiment of the present invention；
Figure 16 be the embodiment of the present invention dangerous source detecting system image detection unit in core processor specific work Make schematic flow sheet.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool Body embodiment is described in detail.
The present invention mostly compares for the form of the detectable dangerous matter sources of the detecting and warning system of dangerous matter sources in the prior art It is single, and the problem of can not realize to being detected while a regional space, there is provided a kind of detection method of dangerous matter sources, realize remote The monitoring and early warning of distance, on a large scale one or more dangerous matter sources, reduce the incidence of disastrous occurrence.
First embodiment
As shown in figure 1, the embodiment of the present invention provides a kind of dangerous matter sources detection method, including：
Step 11, the spectral image data of the different-waveband in default zone of protection space is obtained；
Need exist for explanation, be provided with default zone of protection space various production or storage harmful influences devices, Container, tank etc..The default zone of protection space can be open area, building, production district etc..
Here, the spectral image data for obtaining the different-waveband in default zone of protection space can be specially to obtain default protection From spectral emissions unit or the spectral image data of object its own transmission or the different-waveband reflected to form in regional space.
Step 12, according to the difference or variable quantity of the spectral image data of the different-waveband calculated, obtain described The characteristic parameter of one or more dangerous matter sources in default zone of protection space；
Here, the dangerous matter sources preset in zone of protection space include：The leakage of harmful influence, such as gas, liquid or dust, or The chemical reaction of the exposed generation of person's active metal, or stored goods are glowed and produce smog or toxic gas etc..
Step 13, after one or more of characteristic parameters are more than or equal to predetermined threshold value and continue preset time, Triggering alarm, the characteristic parameter include：Concentration, light extinction rate, temperature and/or the temperature difference of dangerous matter sources.
The dangerous matter sources detection method of the embodiment of the present invention, passes through the spectrum picture of the different-waveband to dangerous matter sources regional space Data are analyzed and processed, and the characteristic parameter of one or more dangerous matter sources in the default zone of protection space are obtained, described When one or more characteristic parameters are more than or equal to predetermined threshold value, triggering alarm, so as to which remote, large-scale one can be realized The monitoring and early warning of kind or a variety of dangerous matter sources, the incidence of the disastrous occurrence as caused by dangerous matter sources is reduced, so as to effectively avoid people Member's injures and deaths and property loss.
Further, the dangerous matter sources detection method of the embodiment of the present invention, step 11 may particularly include：
Step 111, receive in default zone of protection space in the spectroscopic light source of different-waveband, artificial light source and/or space Spectrum caused by background objects natural radiation, the spectrum include：Intrinsic response band spectrum and with reference to band spectrum；
Need exist for explanation, absorption of the dangerous matter sources to different spectral bands or block characteristic difference, general gas flow or Air will not produce decay to the wavelength with reference to wave band, and the Intrinsic Gettering wave band of gas with various is intrinsic that is, described in step 111 Response wave band is different from reference to wave band.That is, the wavelength of the Intrinsic Gettering wave band of gas with various can be because of gas or air Influence and produce different decay.
Step 112, response processing is carried out to the spectrum, obtains the light of the different-waveband in the default zone of protection space View data is composed, the spectral image data includes：Intrinsic response band spectrum view data and reference wave band spectrum picture number According to.
Specifically, the response range of spectrum is：280nm~20 μm.
It should be noted that the dangerous matter sources detection method of the embodiment of the present invention can be to wavelength in the μ m of 280nm~20 Response is identified in spectral band, obtains spectral image data within the range.
Further, the dangerous matter sources detection method of the embodiment of the present invention, step 12 may particularly include：
Step 121, enter respectively to the intrinsic response band spectrum view data and with reference to wave band spectral image data Row pretreatment, determine the intrinsic strength background value and ginseng of corresponding pixel in the intrinsic response band spectrum view data Examine the referenced strength background value of corresponding pixel in band spectrum view data；
Here, intrinsic strength background value and referenced strength background value are the initial strength that spectrum picture corresponds to wave band Value.
Step 122, in intrinsic response band spectrum view data described in real-time detection corresponding pixel intrinsic measurement Intensity level and the reference measure intensity level with reference to corresponding pixel in wave band spectral image data；
Step 123, to the intrinsic strength background value, the referenced strength background value, the intrinsic measurement intensity value with And the reference measure intensity level carries out processing calculating, one or more dangerous matter sources in the default zone of protection space are obtained Characteristic parameter.
Further, the step 121 also may particularly include：
Step 1211, the intrinsic initial of corresponding pixel in the intrinsic response band spectrum view data is obtained respectively Intensity level and the reference initial intensity value with reference to corresponding pixel in wave band spectral image data；
Step 1212, to the intrinsic initial intensity value and described initial strength is referred to respectively in the first predetermined period Value is filtered average estimation, obtains the intrinsic strength back of the body of corresponding pixel in the intrinsic response band spectrum view data The referenced strength background value of corresponding pixel in scape value and the spectral image data with reference to wave band.
Further, the step 123 also may particularly include：
Step 1231, in the second predetermined period according to the intrinsic measurement intensity value and the reference measure intensity level it Than the ratio between, the intrinsic strength background value and referenced strength background value and formula Rt=R0·e-[(E(λl)-E(λr))·C·L], calculate Obtain the characteristic parameter of one or more dangerous matter sources in the default zone of protection space；Wherein, RtRepresent the intrinsic measurement The ratio between the ratio between intensity level and the reference measure intensity level, R0Represent the intrinsic strength background value and the referenced strength background The ratio between value, λ l represent intrinsic band wavelength, and λ r represent to refer to band wavelength, and E (λ) represents an exponential function, and L represents the length of light path Degree, C represent the concentration of dangerous matter sources.
Need exist for explanation, formula Rt=R0·e-[(E(λl)-E(λr))·C·L], it is to be based on Beer-Lambert beer- Lambert laws, i.e. It=I0·e-E(λ)·C·LCalculate what is obtained；Here, ItFor the real-time intensity value of spectrum picture pixel；I0 For the initial intensity value of spectrum picture pixel；E (λ) is an exponential function, the chemical characteristic depending on absorbing material.
Here, Rt=It,l/It,r, wherein It,lRepresent intrinsic measurement intensity value, It,rRepresent reference measure intensity level；R0= I0,l/I0,r, wherein, I0,lRepresent intrinsic strength background value, I0,rReferenced strength background value is represented, finally, according to formula Rt=R0· e-[(E(λl)-E(λr))·C·L], the concentration for finally obtaining dangerous matter sources is：
Explanation is needed exist for, the second predetermined period is generally higher than the first predetermined period.
Explanation is needed exist for, meets high-precision requirement in image detection unit corresponding to the dangerous matter sources detection method When, then fine division can be achieved in the detection to dangerous matter sources.
For example, filter plate is high-pass filtering piece used by image detection unit, being advantageous to, which strengthens background infrared radiation, leads to It is bright, and then gas concentration is more accurately analyzed, suitable for natural background radiant type passive detection equipment, it also is adapted for preferably detection temperature Degree.Certainly, the concentration of gas is not calculated directly from single infrared image, but passes through two thermography numerical value Contrast is calculated.
The infrated flux that spectrum camera in image detection unit is subject to can be described as follows：
Wherein, τiIt is the spectrum response of spectrum camera；
τa, τf, τcIt is the spectral transmittance of air, used filter plate and gas cloud respectively；
Lbk, Lc, LaIt is the spectral intensity of background scene, gas cloud and air respectively；
Assuming that there is hot-zone T respectively in the field of view in default zone of protection spacehWith cold-zone TC, then the pixel in cold and hot area Point compare for：
This formula discharges independently of the heat of gas or air, only the function of background scene and gas cloud transmissivity.It is and saturating The rate of penetrating defers to Beer-Lambert law to being measured by gas concentration in light path：
Wherein, α is the absorption coefficient of gas；
C is the gas concentration on light path local location；
L is light path.
In this way, the detection to dangerous matter sources can not ignore air and gas cloud to light path shadow by above-mentioned integral operation In the case of sound, more accurately calculate dangerous matter sources characteristic parameter.That is, go out pre- to set up defences using above-mentioned algorithm is distinguishable Gas concentration in shield regional space is due to caused by being also due to the leakage of dangerous matter sources caused by air or gas cloud.
Further, the dangerous matter sources detection method of the embodiment of the present invention, step 13 may particularly include：
Step 131, judge whether one or more of characteristic parameters are more than or equal to predetermined threshold value；
Step 132, after one or more of characteristic parameters are more than or equal to predetermined threshold value and continue preset time, The positional information of one or more dangerous matter sources is obtained, and triggers alarm.
Further, the dangerous matter sources detection method of the embodiment of the present invention also includes：
Step 14, the visible images and visible images number of the different-waveband in the default zone of protection space are obtained According to；
Step 15, the positional information and characteristic parameter are superimposed on the visible ray figure by respective coordinates mapping Picture.
Explanation is needed exist for, the visible images of the different-waveband in the default zone of protection space are obtained, by position Confidence ceases and characteristic parameter is superimposed on visible images by respective coordinates mapping, and the visualization of dangerous matter sources can be achieved, may be used also Promptly and accurately indicate the dangerous matter sources in default zone of protection space.
The dangerous matter sources detection method of the embodiment of the present invention, passes through the spectrum picture of the different-waveband to dangerous matter sources regional space Data are analyzed and processed, and the characteristic parameter of one or more dangerous matter sources in the default zone of protection space are obtained, described After one or more characteristic parameters are more than or equal to predetermined threshold value and continue preset time, triggering alarm is remote so as to realize The monitoring and early warning of distance, on a large scale one or more dangerous matter sources, the incidence of the disastrous occurrence as caused by dangerous matter sources is reduced, So as to effectively avoid casualties and property loss.
Second embodiment
As shown in Fig. 2 the embodiment of the present invention also provides a kind of dangerous source detecting system, including：
Image detection unit 21, the spectral image data of the different-waveband for obtaining default zone of protection space；According to The difference or variable quantity of the spectral image data of the different-waveband calculated, obtain one in the default zone of protection space The characteristic parameter of individual or multiple dangerous matter sources；It is more than or equal to predetermined threshold value in one or more of characteristic parameters and continues pre- If after the time, triggering alarm, the characteristic parameter includes：Concentration, light extinction rate, temperature and/or the temperature difference of dangerous matter sources；
Monitoring device 22, it is connected with described image probe unit, for the feature ginseng to one or more of dangerous matter sources Number and warning message are monitored and managed.
Explanation is needed exist for, when dangerous source detecting system only includes image detection unit and monitoring device, is obtained Spectral image data be spectrum caused by background objects natural radiation in artificial light source and/or space in default zone of protection space Corresponding spectral image data.
Here, detection personnel can intuitively recognize the information such as position, the characteristic parameter of dangerous matter sources from monitoring device.Such as Gas distribution map directly can be shown using gray level image, can also be expressed using colour system.Specifically, it is assumed that maximum concentration For Cmax, minimum 0, and colour system maximum is CLmaxIt is CL with minimum valuemin, then the table of colour system under existing concentration can be calculated Up to parameter：CLt=Ct·(CLmax-CLmin)/Cmax, the gas distribution of various concentrations is thus represented with different colours.
Further, the dangerous source detecting system of the embodiment of the present invention also includes：
One or more spectral emissions units 23, coordinate with described image probe unit 21, for according to default sequential to Described image probe unit launches the spectrum of the different-waveband of modulated processing.
Explanation is needed exist for, is provided with the dangerous source detecting system of spectral emissions unit 23, as shown in figure 3, based on Dynamic detection dangerous matter sources system.That is, the spectrum that system can be launched by the spectroscopic light source in spectral emissions unit 23, actively Obtain the spectral image data in default zone of protection space.
Here, spectral emissions unit 23 is laid in default zone of protection space, and laying quantity generally is more It is individual.Spectral emissions unit 23 mainly has two kinds of forms, and a kind of is that light source passes through optics using the light source of multiple single wave bands in itself System forms the spectral emissions unit of directional light or low-angle light source, i.e. special spectrum wave band；One kind is using spectrum covering model Wider light source is enclosed, sets or be not provided with pulse-modulator, i.e. full spectrum light source transmitter unit.
In being provided with based on the dangerous source detecting system of spectral emissions unit 23 and moving detection dangerous matter sources system, image detection Unit 21 is to the computational methods Main Basiss dangerous matter sources of the characteristic parameter of dangerous matter sources, such as gas, flue gas, smog, to not sharing the same light Compose the absorption of wave band or block the difference of characteristic to carry out.When detection be certain gas when, spectral emissions unit 23 would generally Select an Intrinsic Gettering central wavelength lambda1With a reference center wavelength Xr(gas or air will not be produced to the wavelength and declined Subtract), such image detection unit 21 can calculate corresponding gas concentration by the decremeter of two wave bands immediately.
Such as CH4The detecting of luminous energy group's gas, can select 3.34 μm Intrinsic Gettering wavelength and 3.05 μm of ginseng Examine wavelength.Certainly, if detection is smog, then spectral emissions unit 23 can then select two features of 400nm and 850nm Wavelength.Obviously, the decay of gas or smog to two wavelength light beams is different, and by this difference, data analysis goes out gas or cigarette The information of mist, and it is different from vapor, dust etc..Here, two waveband or multiwave design method can be largely smart Relevant parameter is really calculated, and avoids the generation of false alarm.
For another example, as shown in figure 11, the wavelength for the spectral emissions unit 23 of the embodiment of the present invention selects schematic diagram.The chart It is bright for when occurring smog, dust, steam in light path, spectrum can generally decay, so detection except gas with It is to be different from gas detection method during other outer dangerous matter sources, that is, does not decay generally with reference to wave band during detection of gas. This is also the key character for distinguishing other dangerous matter sources such as smog.
Here, it is which material is scattered in atmosphere to distinguish by the spectrum of two suitable wave bands of selection, it is most typical Using being exactly smoke detection, for example, selection 400nm is ultraviolet and two wave bands of 850nm near-infrareds, it is clear that fire hazard aerosol fog to this two The decay of individual light source is different, and the decay of ultraviolet band is apparently higher than infrared, and for the two wave band dust and steam Decay be the same, can thus distinguish well whether smog.And when what image detection unit 21 covered regards When being provided with multiple spectral emissions units 23 in, then dangerous source detecting system can carries out efficient for view field space Smoke detection.
Specifically, the dangerous source detecting system of the embodiment of the present invention may also include：
Spectroscopic light source reflecting plate 24, coordinate with the spectral emissions unit 23, for the spectral emissions unit 23 to be sent out The spectral reflectance penetrated is to described image probe unit 21.
Explanation is needed exist for, spectroscopic light source reflecting plate 24 is added in dangerous source detecting system, as shown in figure 4, having Beneficial in side regulation spectral emissions unit 23, that is to say, that for the ease of adjusting the position of spectral emissions unit 23, by spectrum When transmitter unit 23 is uniformly provided close to the side of image detection unit 21, laying quantity generally is multiple, is passed through The spectroscopic light source reflecting plate 24 of distal end is arranged on by the spectral reflectance that spectral emissions unit 23 is launched in image detection unit 21 Form spectrum picture.
The dangerous source detecting system of the embodiment of the present invention, image detection unit pass through the different ripples to dangerous matter sources regional space The spectral image data of section is analyzed and processed, and obtains the feature of one or more dangerous matter sources in the default zone of protection space Parameter, when one or more of characteristic parameters are more than or equal to predetermined threshold value, triggering alarm, so as to which long distance can be realized From the monitoring and early warning of, one or more dangerous matter sources on a large scale, the incidence of the disastrous occurrence as caused by dangerous matter sources is reduced, from And effectively avoid casualties and property loss.
3rd embodiment
As shown in figure 5, the concrete composition structure for image detection unit in the dangerous source detecting system of the embodiment of the present invention Block diagram.Image detection unit may particularly include：
Optical lens 301；
Explanation is needed exist for, optical lens 301 need to support the use with spectrum camera, the application of optical lens 301 It is one of important determinant of the applicable detection range of image detection unit, the lens focus number of optical lens 301 is bigger, can The distance of detection is then more remote.
It is connected with the optical lens 301, obtains the spectral image data of the different-waveband in default zone of protection space Spectrum camera 302；
Here, spectrum camera 302 is covered for presetting an area of space in zone of protection space, that is, is included The horizontal and vertical angle of visual field, it is, the multiband light beam meeting for the spectral emissions unit transmitting that optional position is arranged in the angle of visual field Image is formed in image detection unit.The spectral response range of spectrum camera 302 is：280nm~20 μm；Can specifically it wrap Include：Intermediate waves band spectrum video camera, the response range of spectrum is between 280nm~5.0 μm；Long wave band spectrum camera, The response range of spectrum is between 7.0 μm~20 μm.
It should be noted that can be according to the type of selected spectrum camera, spectral emissions unit corresponding to selection or can be straight Connect using the artificial light source or natural radiation source in default protective zone.
For example, direct projection or reflectance spectrum transmitter unit are provided with dangerous source detecting system, it should be noted that, reflectance spectrum Include spectroscopic light source reflecting plate in transmitter unit, from intermediate waves band spectrum video camera；And in dangerous source detecting system not When being provided with spectral emissions unit, that is, using artificial light source or the dangerous source detecting system of natural radiation source, from long wave Band spectrum video camera.
Here, spectrum camera 302 can also be according to detection range, the difference of required precision, using refrigeration mode or non-brake method Type thermal camera, refrigeration mode movement is used certainly, its noise equivalent temperature difference NETD is higher, therefore detectivity is just stronger, main Be embodied in can detect it is farther and more accurate.Such as non-refrigeration type may apply to 1km~2km, and refrigeration mode then can use In 2km~3km or farther detection.
It is connected with the spectrum camera 302, according to the difference of the spectral image data of the different-waveband calculated Or variable quantity, the characteristic parameter of one or more dangerous matter sources in the default zone of protection space is obtained, and join in the feature After number is more than or equal to predetermined threshold value and lasting preset time, the core processor 303 of alarm is triggered；
It is arranged between the optical lens 301 and the spectrum camera 302, and it is electric with the core processor 303 Connection, the spectral light entered from the optical lens 301 is limited and passes through the spectrum for presetting wave band to the spectrum camera 302 Filter plate switching device 304.
Specifically, the core processor 303 is embedded core processor, and the embedded core processor typically uses Digital signal processor DSP or on-site programmable gate array FPGA or more arm processors are as shown in fig. 7, specifically may include：
According to the difference or variable quantity of the spectral image data of the different-waveband calculated, the default protection is obtained The characteristic parameter of one or more dangerous matter sources in regional space, and be more than or equal in advance in one or more of characteristic parameters If after threshold value and lasting preset time, trigger the core processing circuit 3031 of alarm；
Here, core processing circuit 3031 specifically analyzes and processes the method and step of process as in the first embodiment, this In repeat no more.
The input/output interface circuit 3032 being connected with the core processing circuit 3031；
It should be noted that all data messages and warning message of image detection unit all pass through input/output interface electricity Road 3032 is transmitted.
Electrically connect with the core processing circuit 3031 and input/output interface circuit 3032, visited to described image Survey the first in-line power circuit 3033 that unit provides power supply supply.
Specifically, the filter plate switching device 304 of the embodiment of the present invention, including：Specific band filter plate or more light Spectral filter piece runner system, the multispectral filter plate runner system are provided with multiband filter plate.
It should be noted that when filter plate switching device 304 is specific band filter plate, specific band filter plate can allow pair The light projection of spectral band is answered to be imaged to spectrum camera, here, spectral emissions unit can use the narrower light of spatial distribution Compose light source, that is, the spectral emissions unit of special spectrum wave band.
When filter plate switching device 304 is multispectral filter plate runner system, spectral emissions unit can be using spectrum point The wider spectroscopic light source of cloth.
Here, the multispectral filter plate runner system is provided with multiband filter plate, the multispectral filter plate runner system It can be rotated according to cycle regular hour, a piece of arrowband or high-pass filtering piece are provided with each position, pass through these filters Wave plate obtains a series of spectrum picture, and 303 core processing circuit 3031 passes through to these spectrum pictures on core processor Analyzing and processing, obtain the characteristic parameters such as concentration, the temperature of dangerous matter sources.
By the use of multispectral filter plate runner system, the Intrinsic Gettering band spectrum image for corresponding to gas can be obtained With refer to wave band spectrum picture, it can in addition contain obtain the correspondence image information of multiple gases, so as to carry out one or more gas The analyzing and processing of body or dangerous matter sources.Multispectral filter plate runner system can also use EO-1 hyperion optical system so that multispectral Filter plate runner system can obtain a characteristic spectrum image every 20nm, can thus carry out point of multiple gases simultaneously Analysis.
For example, the application radiated for full spectrum light source transmitter unit and natural background, multispectral filter plate runner system On filter plate can use high-pass filtering piece, such as using 6 μm, 8.5 μm, 9.6 μm cut-off high-pass filtering pieces, for detecting VOC (volatile organic compounds, VOC) gas；For the spectral emissions of special spectrum wave band Then based on use narrow band filter slice, 3.34 μm of characteristic wave bands and 3.05 μm of characteristic wave bands filtering such as can be selected in unit, filter plate Piece detects VOC gas.
Specifically, as shown in fig. 6, described image probe unit also includes：Visible light lens 305；Respectively with it is described visible Light microscopic first 305 and the core processor 303 connect, and coordinate with the visible light lens 305, obtain the default guard plot The visible images of the different-waveband of domain space and the visible light camera 306 of visible images data.
Need exist for explanation is, it is seen that necessary to light video camera 306 is not the image detection unit.If image detection When visible light camera 306 is provided with unit, the video image of spectrum camera 302 and the colour of visible light camera 306 Or black white image can often carry out fusion and show, with quick display and problem of representation point, be advantageous to the position letter of dangerous matter sources Breath and characteristic parameter by respective coordinates mapping is superimposed on visible images, can be achieved dangerous matter sources visualization, can also and When the accurate default zone of protection space of sign dangerous matter sources.
It should be noted that image detection unit also includes shell, for the protection to internal components and circuit, and And different shells is may customize according to the difference of application places, the explosion-proof type shell that such as explosive place needs.
Fourth embodiment
As shown in figure 8, the concrete composition structure for spectral emissions unit in the dangerous source detecting system of the embodiment of the present invention Block diagram.Spectral emissions unit may particularly include：
Spectroscopic light source 401；
Explanation is needed exist for, spectroscopic light source 401 includes the multiple light sources of different-waveband or with default spectral response The full spectrum light source of scope.
For example, spectroscopic light source can use the LED (Light Emitting Diode, light emitting diode) or light of single wave band Source, and can the LED or light source of 2 or more wave bands be set in wick according to the needs of detection, and pass through electrical modulation So that the switch time of each light source is different, but total cycle is consistent.
For example, as shown in figure 9, different-waveband light source opening and closing when being the multiple light sources of different-waveband for spectroscopic light source Timing diagram.Under normal circumstances, the cycle that all transmitting light source open and close are rotated one week is set to T, in order that image detection list Member can identify the type of current transmitting light source, and the different light source opening times can differ.For example, for use λ 1 for 400nm and λ 2 is the situation of two wave band light sources of 850nm, cycle T=3.5s, wherein T1=1s, T2=1.5s in practical application, The midfeather time is 0.5s respectively.Image detection unit is sampled with the speed no less than 10f/s, it is possible thereby to distinguish It is ultraviolet light or infrared light.The image that image detection unit is adopted according to sequential is analyzed, and calculates corresponding smog or gas The concentration of body, or the concentration of dust and steam.
And in the case of using full spectrum light source, as shown in Figure 10, it is T that the cycle is formed after modulated, and the opening time is T1 full spectrum light source, the selection for now corresponding to spectral band are mainly the rotating wheel disk by filter plate, that is, multispectral Filter plate runner system is completed.
The dangerous source detecting system of all setting active light sources, spectral emissions unit are also had by the way of modulation One critically important effect is to prevent malfunction and the interference of ambient light, and quotes failure letter in time when problem occurs for light source Number.Image detection unit can constantly learn to extract light source imaging background as a reference value, when there is gas, smog or dust, Relative to a reference value, the light of corresponding spectral band can be absorbed, the intensity of absorption can compared with the numerical value with reference to wave band, So as to calculate corresponding concentration parameter.
The light source circuit board 402 with controlling the spectroscopic light source 401 is driven, is set on the light source circuit board 402 State spectroscopic light source 401；
Here, the generally welding of spectroscopic light source 401 is positioned on light source circuit board 402, and spectroscopic light source 401 often carries optically focused Cup, shape are angled 60 °~120 ° of launch angle.
The side of the light source circuit board 402 is arranged at, spectroscopic light source 401 is formed the light of the transmitting light beam of predetermined angle System 403；
Here, optical system 403 include being formed the concave mirror of directional light or low-angle light source, convex lens, multiple convex lens or Fresnel Lenses.Here the first firing angle for the light beam that light source is formed by optical system 403 is 5 ° or so.
For example, when spectroscopic light source 401 is full spectrum light source, θ transmitting light is angled by the shape of optical system 403 Beam, under normal circumstances θ angle be so easy to image detection unit to receive imaging or be easy to spectrum in the range of 5 °~10 ° Light source reflecting plate enters line light source reflection.
It is connected with the light source circuit board 402, the control board 404 with control is modulated to spectroscopic light source 401；
It is connected with the control board 404, detects the photoelectric sensor 405 of the attenuation degree of light source；
Here, photoelectric sensor 405 is mainly used in carrying out the feedback to spectroscopic light source 401, and detection spectroscopic light source 401 declines Subtract degree, and the intensity of emergent light is kept by adjusting the current value of spectroscopic light source 401.
For example, as shown in figure 12, the schematic diagram that the two wave band emission spectrum light sources used for the present invention are decayed with the time. The chart is bright, and no matter what type spectral emissions unit is, as active light source, background artificial light source, lamp radiation, how cloth Put, such as direct projection or reflection, spectroscopic light source all has change and decay.
Under normal circumstances, the method for handling spectroscopic light source decay has two kinds.Photoelectric sensor can be used in one of method, specifically , the intensity of light source is perceived by photoelectric sensor and changed, when weakened, i.e., control electric current increases to keep a stabilization Value, that is, make the compensation of source current.
Another method is then that should ensure that detection by the adaptive of image detection unit, is preset when light source Natural Attenuation exceedes Limit when, system report failure, change spectroscopic light source.
Electrically connect with the light source circuit board 402 and the control board 404, carried to the spectral emissions unit Second in-line power circuit 406 of power supply source supply.
Here, it is necessary to which explanation, control board 404 are mainly used in controlling the electrical modulation or control of spectroscopic light source 401 Machinery modulation device is modulated, and also controls light by PWM (Pulse Width Modulation, pulse width modulation) method The power and emissive porwer of light source 401 are composed, while receives the signal of photoelectric sensor 405, confirms that spectroscopic light source 401 is in normal Working condition.
Specifically, the spectral emissions unit of the embodiment of the present invention may also include：It is connected with the control board 404, The modulation of source device being modulated according to default modulation period to spectroscopic light source, do not show in figure.
More specifically, the modulation of source device includes：The electrical modulation circuit that is arranged on the light source circuit board 402 or Machinery modulation device.
Here, the modulation system of spectroscopic light source includes electrical modulation and machinery modulation.Spectroscopic light source is carried out using electrical modulation During modulation, the modulation light of cycle T can be formed, the light source of each wave band sets the opening time as TOi, shut-in time TCi.This It is very fast that kind of electrical modulation mode is mainly used for spectroscopic light source response, radiation can with the situation of high-speed switch, for example with 400nm and 850nm LED, then it can carry out electrical modulation；
And for being difficult to the spectroscopic light source by electrical modulation, here mainly due to light source switch under the conditions of, wick temperature It is still very high, stronger radiation energy can be sent, then by the way of machinery modulation.
It should be noted that machinery modulation device includes：Motor, with the gear train of the motor connection and with the gear It is the modulation panel of connection.
Here, motor and gear train drive modulation panel to be rotated with certain cycle, form the modulation of source waveform of needs.If When image detection unit is detected using background natural radiation, then without light modulation.
Explanation is needed exist for, for full spectrum light source, when modulation of source inconvenience, it is to set machinery modulation device very much Good selection, the light spectrum image-forming of specific period can be obtained., so can be compared with it can be seen that optimal modulation still will be arranged on source ends The influence of good differentiation environment, because only that the light for meeting modulation rule is only real light source, other light sources are all environment Disturb light.
5th embodiment
As shown in figure 13, it is the application setting procedure of spectral emissions unit in the dangerous source detecting system of the embodiment of the present invention Schematic diagram.The concrete application flow of spectral emissions unit is illustrated with reference to the figure.
It should be noted that using spectral emissions unit dangerous source detecting system based on move detection system, the system can Lean on and precision is high, therefore the light source of system sets and just seems important.The either multiple light sources of different-waveband, or full light Light source, also either electrical modulation, or machinery modulation are composed, the emergent light of spectral emissions unit needs to carry out according to the specific cycle Open and close, so when in use with regard to needing to defer to following flow.
S101, according to the distance between image detection unit and spectral emissions unit and the ring in default zone of protection space Border situation, determine the strength grade of light source；
Under normal circumstances, spectroscopic light source can carry out the setting of the intensity of light source by toggle switch or software design patterns, mainly Control the control driving current of light source.
S102, set up the spectroscopic light source direction of the launch of spectral emissions unit；
Here, after the strength grade of light source is set up, spectral emissions unit, which is powered, to be opened, and detection personnel can pass through laser The direction of the whole spectral emissions unit of style, to be directed at the position of the optical lens of image detection unit.Here, the degree of alignment will Ask not high, only need the position of rough alignment image detection unit.
S103, judge spectroscopic light source whether according to default frequency scintillation；
If so, then enter the operating process of image detection unit；If it is not, then perform step S104.
Here, the signal of spectroscopic light source is received using test equipment or image detection unit, setting software can be to spectrum Judgement is identified in the type of light source, cycle etc., if the spectroscopic light source of spectral emissions unit is according to default frequency scintillation, i.e. light Light source normal work is composed, whole dangerous source detecting system can enter image detection unit operating process.
S104, wiring, equipment are checked, position failure.
Explanation is needed exist for, if detecting there is problem in spectral emissions unit, return to step S101, that is, to light Spectrum transmitter unit does further setting, including the intensity of light source, direction etc..
Sixth embodiment
As shown in figure 14, stream is set for the application of the image detection unit in the dangerous source detecting system of the embodiment of the present invention Journey schematic diagram.The concrete application flow of image detection unit is illustrated with reference to the figure.
It should be noted that for active detection system, the most important work of image detection unit is exactly that identification is pre- Each spectral emissions unit in the field of view of shield regional space of setting up defences, and realize the compound place to different spectrum pictures Reason；For passive detection system, the main work of image detection unit is to carry out the background of different spectral band hypographs Self study is extracted and the location matches of different spectrum pictures, and is merged with visible images.Its idiographic flow is as follows：
S201, the quantity of the spectral emissions unit in image detection unit visual field overlay area is set；
It should be noted that above-mentioned steps are performed after the adjustment of spectral emissions unit is completed.
S202, image detection unit, which is powered, to be activated, voluntarily scanning space view field image；
S203, the background of self study spectrum picture, extract position, testing background and the signal intensity of spectroscopic light source；
S204, judges whether testing background or the intensity of light source exceed predetermined threshold value；
If so, then enter dangerous matter sources detection algorithm flow；If it is not, then perform step S205.
It should be noted that image detection unit needs to carry out the judgement of quantity of light source and background applicability in this step.
S205, image detection unit report an error, and indicate redjustment and modification.
Here, the report an error intensity of light source for showing spectral emissions unit, background applicability of image detection unit is unsatisfactory for presetting Condition, or quantity of light source are unsatisfactory for predetermined number, and system then needs further to adjust, or reselects spectral emissions unit Intensity, until spectral emissions unit and image detection unit match completely, or view field image meets detection and required, that is, enters Probe algorithm flow.
7th embodiment
As shown in figure 15, the detection flow for the image detection unit of the dangerous source detecting system of the embodiment of the present invention is illustrated Figure.The detection flow of image detection unit is illustrated with reference to the figure.
Explanation is needed exist for, the essence of detection is：First, detect spectral light of the dangerous matter sources to spectral emissions unit The absorption of the intensity of light source or spectrum picture background, attenuation, the effect of blocking or radiation caused by source or background in kind Effect and caused sensor array, that is, the pixel of spectrum picture, variable quantity；Here, dangerous matter sources include explosivity Or toxic and harmful gas, smog, dust or temperature anomaly etc..Second, according to the pixel of sensor array, i.e. spectrum picture Variable quantity, calculate the concentration or variable quantity of dangerous matter sources.And sensor array persistently enters line light source context update or background more Newly, to avoid the influence of environment light source, artificial light source etc..It is for example, as follows for multiband spectrum light source, specific processing method：
Assuming that Sn,m,BKG(t) pixel intensity background value of n-th of the light source m wave band of t in spectrum picture is represented, And In,m(t) the real-time pixel point detected intensity of n-th of light source m wave band of t is then represented.The method of the foundation of background is more, It is conventional including mixed Gauss model etc., certainly, weighting rule be it is the simplest a kind of, it is described below, and it is possible thereby to ask Variation delta I corresponding to obtainingn,m(t), so as to trying to achieve the concentration of dangerous matter sources.
Sn,m,BKG(t)=Sn,m,BKG(t-1)+k·[Sn,m,BKG(t)-Sn,m,BKG(t-1)]
ΔIn,m(t)=Sn,m,BKG(t)-In,m(t)
Cn,m(t)=f (Δ In,1(t),ΔIn,2(t)...,ΔIn,m(t))
Here, the detection flow of image detection unit comprises the following steps that：
S301, determine the self-test such as image detection unit commencement of commercial operation, refrigeration, mechanical part or electric component；
S302, judge whether image detection unit is normal；
If so, then perform step S303；If it is not, then perform step S304.
S303, the pixel intensity level of different-waveband image is extracted, average computation is filtered within the cycle very first time, Obtain newest background or hot spot initial value；
Here, the cycle very first time is identical with the first preset time period in embodiment.
S304, return to artificial disposal；
S305, the intensity level of each pixel in different-waveband image is measured in real time, is contrasted within the second time cycle Computing, obtain gas, smoke transportation parameter or calculate concentration index；
S306, judge whether dangerous matter sources；
If so, then perform step S307；If it is not, then return to step S301.
Need exist for explanation, by obtained in step S305 gas, smoke transportation parameter or calculate concentration index with Corresponding predetermined threshold value is compared judgement, in gas, smoke transportation parameter or calculates any one of concentration index more than corresponding Predetermined threshold value when, then judge dangerous source, perform step S307.
S307, into alarm flow.
8th embodiment
As shown in figure 16, it is core processor in the image detection unit of the dangerous source detecting system of the embodiment of the present invention Specific works flow process schematic diagram.Describe the workflow of core processor in detail with reference to the figure.
S401, obtain the destination image data in optical lens；
Here, destination image data refers to the image of the existence in default zone of protection space.
S4021, obtain view data of the spectrum camera in specific band；
Here, specific band refers to Intrinsic Gettering wave band and with reference to wave band.
S4022, obtain view data of the visible light camera in specific band；
S4031, store different-waveband time-series image data；
Here, different-waveband time-series image data refer to that the spectrum of different-waveband has respective predetermined period, It is exactly the opening time difference of the spectroscopic light source of the different-waveband in default zone of protection space, and enters according to respective predetermined period Row spectral emissions.
S4032, store visible ray time-series image data；
S404, the time-series image data that more all video cameras obtain are calculated, extract discrepancy；
Explanation is needed exist for, all video cameras refer to the video camera in image detection unit, it may include：Spectrum images Machine and visible light camera.
Here, for the method and step in extraction the 7th embodiment of reference of the time-series image data difference dissimilarity of acquisition , repeat no more here.
S405, the concentration or related data of target are detected according to analysis of image data；
Here, the concentration of target refers to concentration of gas in default zone of protection space, smog, dust or steam etc., and Related data may include light extinction rate, temperature and/or temperature difference in default zone of protection space etc..
S406, it is added to by the detection target image for mapping respective coordinates on visible images, forms combination picture；
Here it should be noted that, the combination picture of formation can intuitively determine to detect target image in default zone of protection sky In particular location, it is preferred that emphasis is show the generation, generation and diffusion-condition of dangerous matter sources, be accurately positioned dangerous matter sources position and Problem, there is provided the processing of pole early stage.
S407, the various data of stored record and combination picture, and pass through network transmission signal；
Here it should be noted that, the transmission of usual vision signal is transmitted again after need to being handled by compressed encoding.
S408, judges whether dangerous matter sources degree exceedes predetermined threshold value；
If so, then perform step S409；If it is not, then return to step S401, continues to obtain the target image in optical lens Data.
S409, triggering alarm.
It should be noted that the workflow of the core processor is image detection unit when including visible light camera Handling process.Step S4022 during visible light camera, step S4032 and step S406 are not provided with image detection unit It can omit.That is, for the system of no visible light camera, abnormity point and numerical value can also be indicated in spectrum picture On.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (20)

  1. A kind of 1. dangerous matter sources detection method, it is characterised in that including：
    Obtain the spectral image data of the different-waveband in default zone of protection space；
    According to the difference or variable quantity of the spectral image data of the different-waveband calculated, the default zone of protection is obtained The characteristic parameter of one or more dangerous matter sources in space；
    After one or more of characteristic parameters are more than or equal to predetermined threshold value and continue preset time, triggering alarm, institute Stating characteristic parameter includes：Concentration, light extinction rate, temperature and/or the temperature difference of dangerous matter sources.
  2. 2. dangerous matter sources detection method according to claim 1, it is characterised in that obtain the difference in default zone of protection space The step of spectral image data of wave band, includes：
    Background objects nature spoke in the spectroscopic light source of different-waveband, artificial light source and/or space in the default zone of protection space of reception Caused spectrum is penetrated, the spectrum includes：Intrinsic response band spectrum and with reference to band spectrum；
    Response processing is carried out to the spectrum, obtains the spectral image data of the different-waveband in the default zone of protection space, The spectral image data includes：Intrinsic response band spectrum view data and reference wave band spectral image data.
  3. 3. dangerous matter sources detection method according to claim 2, it is characterised in that the response range of the spectrum is：280nm ~20 μm.
  4. 4. dangerous matter sources detection method according to claim 2, it is characterised in that according to the different-waveband calculated The difference or variable quantity of spectral image data, obtain the feature ginseng of one or more dangerous matter sources in the default zone of protection space Several steps, including：
    Pre-processed respectively to the intrinsic response band spectrum view data and with reference to wave band spectral image data, it is determined that The intrinsic strength background value of corresponding pixel and reference wave band spectrogram in the intrinsic response band spectrum view data As the referenced strength background value of corresponding pixel in data；
    Intrinsic the measurement intensity value and ginseng of corresponding pixel in intrinsic response band spectrum view data described in real-time detection Examine the reference measure intensity level of corresponding pixel in band spectrum view data；
    The intrinsic strength background value, the referenced strength background value, the intrinsic measurement intensity value and the reference are surveyed Amount intensity level carries out processing calculating, obtains the characteristic parameter of one or more dangerous matter sources in the default zone of protection space.
  5. 5. dangerous matter sources detection method according to claim 4, it is characterised in that respectively to the intrinsic response band spectrum View data and reference wave band spectral image data are pre-processed, and are determined in the intrinsic response band spectrum view data The intrinsic strength background value of corresponding pixel and the referenced strength with reference to corresponding pixel in wave band spectral image data The step of background value, includes：
    The intrinsic initial intensity value and ginseng of corresponding pixel in the intrinsic response band spectrum view data are obtained respectively Examine the reference initial intensity value of corresponding pixel in band spectrum view data；
    The intrinsic initial intensity value and the reference initial intensity value are filtered respectively in the first predetermined period flat Estimate, obtain in the intrinsic response band spectrum view data intrinsic strength background value of corresponding pixel and described With reference to the referenced strength background value of corresponding pixel in wave band spectral image data.
  6. 6. dangerous matter sources detection method according to claim 4, it is characterised in that to the intrinsic strength background value, described Referenced strength background value, the intrinsic measurement intensity value and the reference measure intensity level carry out processing calculating, obtain described Include in default zone of protection space the step of the characteristic parameter of one or more dangerous matter sources：
    According to the ratio between the intrinsic measurement intensity value and the reference measure intensity level, described intrinsic strong in the second predetermined period Spend the ratio between background value and the referenced strength background value and formula Rt=R0·e-[(E(λl)-E(λr))·C·L], it is calculated described pre- The characteristic parameter of one or more dangerous matter sources in shield of setting up defences regional space；Wherein, RtRepresent the intrinsic measurement intensity value and institute State the ratio between the ratio between reference measure intensity level, R0Represent the ratio between the intrinsic strength background value and the referenced strength background value, λ l Intrinsic band wavelength is represented, λ r represent to refer to band wavelength, and E (λ) represents an exponential function, and L represents the length of light path, and C is represented The concentration of dangerous matter sources.
  7. 7. dangerous matter sources detection method according to claim 1, it is characterised in that big in one or more of characteristic parameters After predetermined threshold value and lasting preset time, triggering the step of alarming includes：
    Judge whether one or more of characteristic parameters are more than or equal to predetermined threshold value；
    After one or more of characteristic parameters are more than or equal to predetermined threshold value and continue preset time, one or more is obtained The positional information of individual dangerous matter sources, and trigger alarm.
  8. 8. dangerous matter sources detection method according to claim 7, it is characterised in that also include：
    Obtain the visible images and visible images data of the different-waveband in the default zone of protection space；
    The positional information and characteristic parameter are superimposed on the visible images by respective coordinates mapping.
  9. A kind of 9. dangerous source detecting system, it is characterised in that including：
    Image detection unit, the spectral image data of the different-waveband for obtaining default zone of protection space；According to calculating The different-waveband spectral image data difference or variable quantity, obtain in the default zone of protection space one or more The characteristic parameter of individual dangerous matter sources；It is more than or equal to predetermined threshold value and lasting preset time in one or more of characteristic parameters Afterwards, triggering alarm, the characteristic parameter include：Concentration, light extinction rate, temperature and/or the temperature difference of dangerous matter sources；
    Monitoring device, be connected with described image probe unit, for the characteristic parameter to one or more of dangerous matter sources and Warning message is monitored and managed.
  10. 10. dangerous source detecting system according to claim 9, it is characterised in that also include：
    One or more spectral emissions units, coordinate with described image probe unit, for according to default sequential to described image Probe unit launches the spectrum of the different-waveband of modulated processing.
  11. 11. dangerous source detecting system according to claim 10, it is characterised in that also include：
    Spectroscopic light source reflecting plate, with the spectral emissions unit matching, the spectrum for the spectral emissions unit to be launched is anti- It is incident upon described image probe unit.
  12. 12. dangerous source detecting system according to claim 9, it is characterised in that described image probe unit includes：
    Optical lens；
    It is connected with the optical lens, obtains the spectrum shooting of the spectral image data of the different-waveband in default zone of protection space Machine；
    It is connected with the spectrum camera, according to the difference of the spectral image data of the different-waveband calculated or change Amount, obtains the characteristic parameter of one or more dangerous matter sources in the default zone of protection space, and in one or more of spies After parameter is levied more than or equal to predetermined threshold value and lasting preset time, the core processor of alarm is triggered；
    It is arranged between the optical lens and the spectrum camera, and is electrically connected with the core processor, will be from described The spectral light that optical lens enters limits the filter plate switching device for passing through the spectrum of default wave band to the spectrum camera.
  13. 13. dangerous source detecting system according to claim 12, it is characterised in that the core processor is embedded core Heart processor, including：
    According to the difference or variable quantity of the spectral image data of the different-waveband calculated, the default zone of protection is obtained The characteristic parameter of one or more dangerous matter sources in space, and it is more than or equal to default threshold in one or more of characteristic parameters After value and lasting preset time, the core processing circuit of alarm is triggered；
    The input/output interface circuit being connected with the core processing circuit；
    Electrically connected with the core processing circuit and input/output interface circuit, electricity is provided to described image probe unit First in-line power circuit of source supply.
  14. 14. dangerous source detecting system according to claim 12, it is characterised in that the filter plate switching device includes： Specific band filter plate or multispectral filter plate runner system, the multispectral filter plate runner system are provided with multiband filtering Piece.
  15. 15. dangerous source detecting system according to claim 12, it is characterised in that described image probe unit also includes：
    Visible light lens；
    It is connected with the visible light lens and the core processor, coordinates with the visible light lens respectively, described in acquisition The visible images of different-waveband and the visible light camera of visible images data in default zone of protection space.
  16. 16. dangerous source detecting system according to claim 10, it is characterised in that the spectral emissions unit includes：
    Spectroscopic light source；
    The light source circuit board with controlling the spectroscopic light source is driven, the spectroscopic light source is provided with the light source circuit board；
    The side of the light source circuit board is arranged at, spectroscopic light source is formed the optical system of the transmitting light beam of predetermined angle；
    It is connected with the light source circuit board, the control board with control is modulated to spectroscopic light source；
    It is connected with the control board, detects the photoelectric sensor of the attenuation degree of light source；
    Electrically connected with the light source circuit board and the control board, power supply supply is provided to the spectral emissions unit The second in-line power circuit.
  17. 17. dangerous source detecting system according to claim 16, it is characterised in that the spectroscopic light source includes different-waveband Multiple light sources or full spectrum light source with default spectral response range.
  18. 18. dangerous source detecting system according to claim 16, it is characterised in that the spectral emissions unit also includes：
    It is connected with the control board, the modulation of source device being modulated according to default modulation period to spectroscopic light source.
  19. 19. dangerous source detecting system according to claim 18, it is characterised in that the modulation of source device includes：If The electrical modulation circuit or machinery modulation device being placed on the light source circuit board.
  20. 20. dangerous source detecting system according to claim 19, it is characterised in that machinery modulation device includes：Motor, with The gear train of the motor connection and the modulation panel being connected with the gear train.
CN201610445640.2A 2016-06-20 2016-06-20 A kind of dangerous matter sources detection method and system Pending CN107703555A (en)

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