CN206557947U - A kind of multispectral ultraviolet detonation detection means - Google Patents
A kind of multispectral ultraviolet detonation detection means Download PDFInfo
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- CN206557947U CN206557947U CN201621386641.6U CN201621386641U CN206557947U CN 206557947 U CN206557947 U CN 206557947U CN 201621386641 U CN201621386641 U CN 201621386641U CN 206557947 U CN206557947 U CN 206557947U
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Abstract
The utility model discloses a kind of multispectral ultraviolet detonation detection means, the device includes radiation sensitive unit and data processing unit, wherein radiation sensitive unit at least includes being used for the first radiation sensor of radiation and the first signal of output for sensing first wave length, the radiation for sensing second wave length and exports the second radiation sensor of secondary signal and the radiation for the 3rd wavelength of sensing and the 3rd radiation sensor for exporting the 3rd signal, and first, second, and third signal is the UV signal that wavelength is differed；Data processing unit includes being used to judge whether detonation based on first, second, and third signal and sends the explosion judgment module of alarm signal.Multispectral ultraviolet detonation detection means in the utility model, with high false alarm prevention characteristic, can realize high speed, highly sensitive detonation detection.
Description
Technical field
The utility model is related to fire-fighting equipment field.More particularly, to the multispectral ultraviolet detonation detection means of one kind.
Background technology
During fire detector is fire automatic alarm system, scene is detected, the equipment of discovery fire is used for
Fire alarm and startup fire braking measure.Main fire detector type has smoke fire detector, temperature-sensitive both at home and abroad at present
Fire detector, gaseous type fire detector and spectrum fire detector.Wherein smoke fire detector, heat fire detector
It is long to the actual fire response time with gaseous type fire detector because it detects mechanism limitation, or even due to detection parameter
Detector can not be reached and failing to report phenomenon occur.Have fast response time, detection range remote due to spectrum fire detector and
The features such as good environmental adaptability, so general at present all carry out detection using spectrum fire detector.For the inspection of detonation
Survey, it is necessary to which detector has faster response speed, while requiring that detector has relatively low rate of false alarm, reduction is dry to other signals
The influence disturbed.
Spectrum flame detector (Multi spectral flame detector) is detected in substance combustion, is produced
Different ion pairs should have different spectral characteristics, and Different lightwave spectral line is produced, by gathering, handling and compare these
Spectral line come judge recognize flame.In practice, when many fire occur, simultaneous burning and deflagration phenomenon, and current fire
Fire detector can only carry out the detection of single flare up fire mostly, and the detection to detonation can not reach permissible accuracy and sensitive
Degree.Even if in addition, there is some detection devices to be detected to detonation, but the limitation for detecting mechanism due to it, to burning and
Detonation is not distinguished effectively, therefore its practicality is not strong：Either detonation can not be made a response or by interference signal
The problem of as detonation to report by mistake, also, the general response time is longer, it is impossible to meet practical application request.
Accordingly, it is desirable to provide it is a kind of can on detonation quick response and can effectively suppress interference signal influence detonation
Detection means.
The content of the invention
The purpose of this utility model be provide one kind can to detonation quick response and can effectively suppress interference letter
Number influence detonation detection means.
To reach above-mentioned purpose, the utility model uses following technical proposals：
A kind of multispectral ultraviolet detonation detection means, the device includes：
Radiation sensitive unit, at least including radiating biography for sensing the radiation of first wave length and exporting the first of the first signal
Sensor, for sensing the radiation of second wave length and exporting the second radiation sensor of secondary signal, and for sensing the 3rd wavelength
Radiation and export the 3rd signal the 3rd radiation sensor, first, second, and third signal be wavelength it is mutually different ultraviolet
Signal；Above-mentioned first, second, and third radiation sensor is used for the radiation signal for sensing specific wavelength and turns the radiation signal
Turn to electric signal output.The intensity of radiation signal and the linear positive correlation of the amplitude of electric signal, the i.e. amplitude of electric signal are used to reflect
The intensity of correspondence radiation signal.
Data processing unit, including explosion judgment module, for being judged whether based on first, second, and third signal
Detonation simultaneously sends alarm signal.
When carrying out explosion judgment, the interference of other signals of the wrong report for causing detonation detection device is there may be in environment,
Such as sunshine, riflery flame, arclight, the radiation of infrared spotlight and heat radiation.The possibility reported by mistake for reduction, according to
The present invention, it is preferable that data processing unit also includes threshold value comparison module, for by the amplitude of first, second, and third signal
(A, B, C) respectively with corresponding first, second, and third threshold value (A0、B0、C0) be compared, if any two in three signals are believed
Number amplitude be more than correspondence threshold value, then explosion judgment module judges to have detonation and sends alarm signal.Because interference signal is same
When in the presence of any two signals in three signals amplitude be more than correspondence threshold value probability it is very small, therefore, multispectral carry out detonation
Judgement can be prevented effectively from the influence of interference signal, rapidly and accurately judge.
Preferably, data processing unit also includes threshold value comparison module, for by the amplitude of first, second, and third signal
(A, B, C) respectively with corresponding first, second, and third threshold value (A0、B0、C0) be compared, if the amplitude of three signals is big
In correspondence threshold value, then there is detonation and send alarm signal in explosion judgment module judgement.In order to further improve judgement
The degree of accuracy, explosion judgment module is when first, second, and third signal amplitude is all higher than correspondence threshold value, and it is concurrent that judgement has detonation
Go out alarm signal.
It is further preferred that data processing unit also includes amplitude com parison module, for by first and second signal amplitude
Absolute difference the first comparative result (M) and the 4th threshold value (M0) be compared, and by second and the 3rd signal amplitude
The second comparative result (N) of absolute difference and the 5th threshold value (N0) be compared, if meeting 0.9M0＜ M ＜ 1.1M0And
0.9N0＜ N ＜ 1.1N0, then explosion judgment module judge there is detonation and send alarm signal, wherein, M=| A-B |, N=| B-C
|.During generation detonation, although the intensity of specific wavelength radiation spectrum is to change, but selected two or more characteristic wavelength spokes
Penetrating the amplitude change intensity of spectrum has correlation.In detecting twice, the two or more characteristic wavelengths radiated during detonation
The change of spectrum amplitude is equal or approximate, and interference signal is due in the absence of scintillation, the spectrum of two or more characteristic wavelengths
Amplitude change does not have above-mentioned rule.
It is further preferred that data processing unit also includes amplitude com parison module, for by first and second signal amplitude
Absolute difference the first comparative result (M) and the 4th threshold value (M0) be compared, and by second and the 3rd signal amplitude
The second comparative result (N) of absolute difference and the 5th threshold value (N0) be compared, if meeting 0.95M0＜ M ＜ 1.05M0And
0.95N0＜ N ＜ 1.05N0, then explosion judgment module judge there is detonation and send alarm signal, wherein, M=| A-B |, N=|
B-C|.First comparative result (M) and the 4th threshold value (M0) be compared and the second comparative result (N) and the 5th threshold value (N0) enter
When row compares, by changing Rule of judgment, it can further change the degree of accuracy of detonation detection.Usually, set smaller
Threshold range can bring higher detection accuracy.
Preferably, the wavelength of first, second, and third signal is determined according to detonation species to be measured.Different detonations to be measured
Thing, the strong UV signal of selection detectivity,
Preferably, first, second, and third radiation sensor can be sensed there may be from the region where flame or flame
Field emission ultraviolet light.
Preferably, detector further comprises warning circuit, and the warning circuit is according to the alarm from data processing unit
Signal is alarmed.
Preferably, detector further comprises signal processing circuit, and the signal processing circuit is believed first, second, and third
Number carry out impedance matching, amplification and filtering process.
The beneficial effects of the utility model are as follows：
Multispectral ultraviolet detonation detection means in the utility model, by choosing then at least three ultraviolet radiation sensors to choosing
Determine wavelength signals to be detected, by analyzing its magnitude relation for detecting signal, judge whether detonation.The device has height
False alarm prevention characteristic, can realize high speed, highly sensitive detonation detection.
Brief description of the drawings
Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows multispectral ultraviolet detonation structure of the detecting device schematic diagram in embodiment 1.
Fig. 2 shows multispectral ultraviolet detonation structure of the detecting device schematic diagram in embodiment 2.
Fig. 3 shows multispectral ultraviolet detonation structure of the detecting device schematic diagram in embodiment 4.
Embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and protection domain of the present utility model should not be limited with this.
A kind of multispectral detonation detection means, it is characterised in that the device include radiation sensitive unit, at least including for
Sense the radiation of first wave length and export the first radiation sensor of the first signal, radiation and output for sensing second wave length
Second radiation sensor of secondary signal, and radiate sensing for sensing the radiation of the 3rd wavelength and exporting the 3rd of the 3rd signal
Device, first, second, and third signal is the UV signal that wavelength is differed；The wavelength of first, second, and third signal is spy
Fixed wavelength, it can be a certain fixed value, or a certain wave band.Data processing unit, including explosion judgment module, are used
In judging whether detonation based on first, second, and third signal and send alarm signal.
Whether when carrying out explosion judgment, the UV signal of specific wavelength/wave band can be detected or according to detection by being based primarily upon
To the magnitude relation of UV signal judge whether detonation.
In the utility model, the wavelength of first, second, and third signal is determined according to detonation species to be measured.Wavelength is really
Surely should be chosen according to detonation thing to be measured, such as hydrocarbon detonation, ammonium nitrate explosive detonation, nitroglycerine detonation and
Aromatic series nitrification based compound class explosive detonation etc..
Above-mentioned situation is illustrated with reference to one group of specific embodiment.Three sensors are chosen to detect for detonation,
Further, it is 254nm to choose the first signal wavelength, and secondary signal wavelength is 307nm, and the 3rd signal wavelength is 360nm.
Embodiment 1
As shown in figure 1, radiation sensitive unit includes first sensor, second sensor and 3rd sensor, wherein, first
Sensor is used for the radiation for sensing first wave length and exports the first signal, and second sensor is for sensing the radiation of second wave length simultaneously
Secondary signal is exported, 3rd sensor is used for the radiation for sensing the 3rd wavelength and exports the 3rd signal.First, second, and third spoke
Penetrating sensor is used to sense the radiation signal of specific wavelength and the radiation signal is converted into electric signal output.Radiation signal it is strong
The linear positive correlation of amplitude of degree and electric signal, the i.e. amplitude of electric signal are used for the intensity for reflecting correspondence radiation signal.Data processing
Unit includes explosion judgment module, for judging whether detonation based on first, second, and third signal and sending alarm signal
Number.
When carrying out detonation detection, radiation sensitive unit sends first, second, and third signal to data processing unit
Explosion judgment module, explosion judgment module detects first, second, and third signal, then judges to have detonation and send alarm signal
Number.
Embodiment 2
As shown in Fig. 2 radiation sensitive unit includes first sensor, second sensor and 3rd sensor, wherein, first
Sensor is used for the radiation for sensing first wave length and exports the first signal, and second sensor is for sensing the radiation of second wave length simultaneously
Secondary signal is exported, 3rd sensor is used for the radiation for sensing the 3rd wavelength and exports the 3rd signal.First, second and
Three radiation sensors are used to sense the radiation signal of specific wavelength and the radiation signal are converted into electric signal output.Radiation signal
The linear positive correlation of the amplitude of intensity and electric signal, i.e., the amplitude of electric signal be used for reflect correspondence radiation signal intensity.
Data processing unit includes threshold value comparison module and explosion judgment module, and threshold value comparison module is used for first, the
The amplitude (A, B, C) of two and the 3rd signal respectively with corresponding first, second, and third threshold value (A0、B0、C0) be compared, it is quick-fried
Combustion judge module judges whether detonation for the judged result based on threshold value comparison module and sends alarm signal.
In the present embodiment, if A>A0, B>B0, C>C0Middle any two is set up, then explosion judgment module judges there is detonation simultaneously
Send alarm signal.
Embodiment 3
On the basis of embodiment 2, if A>A0, B>B0, C>C0Set up, then explosion judgment module judges there is detonation simultaneously
Send alarm signal.
It should be noted that embodiment 3 is the improvement to the scheme of embodiment 2, that is, changes Rule of judgment, enable to detonation to examine
Survey the rate of false alarm reduction of device.Rate of false alarm and sensitivity can be changed by changing threshold value by being opened in the utility model.
Embodiment 4
As shown in figure 3, radiation sensitive unit includes first sensor, second sensor and 3rd sensor, wherein, first
Sensor is used for the radiation for sensing first wave length and exports the first signal, and second sensor is for sensing the radiation of second wave length simultaneously
Secondary signal is exported, 3rd sensor is used for the radiation for sensing the 3rd wavelength and exports the 3rd signal.First, second and
Three radiation sensors are used to sense the radiation signal of specific wavelength and the radiation signal are converted into electric signal output.Radiation signal
The linear positive correlation of the amplitude of intensity and electric signal, i.e., the amplitude of electric signal be used for reflect correspondence radiation signal intensity.
Data processing unit includes amplitude com parison module and explosion judgment module, wherein, amplitude com parison module, for by the
One with the first comparative result (M) and the 4th threshold value (M of the absolute difference of secondary signal amplitude0) be compared, and by second
With the second comparative result (N) and the 5th threshold value (N of the absolute difference of the 3rd signal amplitude0) be compared, explosion judgment mould
Block is judged in the presence of whether detonation and sending alarm signal for the comparative result based on amplitude com parison module.
During generation detonation, although the intensity of specific wavelength radiation spectrum is to change, but selected two or more features
The amplitude change intensity of wavelength radiation spectrum has correlation.In detecting twice, the two or more features radiated during detonation
The spectrum amplitude change of wavelength is equal or approximate, and interference signal is due in the absence of scintillation, two or more characteristic wavelengths
Spectrum amplitude change do not have above-mentioned rule.In the present embodiment, if meeting 0.9M0＜ M ＜ 1.1M0And 0.9N0＜ N ＜
1.1N0, then explosion judgment module judge there is detonation and send alarm signal, wherein, M=| A-B |, N=| B-C |.
Embodiment 5
On the basis of embodiment 4, if meeting 0.95M0＜ M ＜ 1.05M0And 0.95N0＜ N ＜ 1.05N0, then detonation sentences
Disconnected module judges there is detonation and send alarm signal, wherein, M=| A-B |, N=| B-C |.First comparative result (M) and the 4th
Threshold value (M0) be compared and the second comparative result (N) and the 5th threshold value (N0) when being compared, by changing Rule of judgment, energy
Enough degrees of accuracy for further changing detonation detection.Usually, setting smaller threshold range can bring higher detection accurate
Exactness.
Experiment shows that many light UV spectrum detonation detection means with interfering signal to having extremely strong exempt from the utility model
Epidemic disease ability, rate of false alarm is zero：
1st, the sunshine of direct projection or reflection；
2nd, power is 100 watts of Chinese herbaceous peony headlamp at 200 meters of distance；
3rd, riflery flame at 300 meters of distance；
4th, power is the heat radiation of 500 watts of air-heater at 400 meters of distance；
5th, power radiates for 200 watts of infrared spotlight at 500 meters of distance；
6th, current strength is the arclight of 200 peaces at 500 meters of distance.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model extends out still in of the present utility model
The row of protection domain.
Claims (9)
1. a kind of multispectral ultraviolet detonation detection means, it is characterised in that the device includes
Radiation sensitive unit, at least including radiating sensing for sensing the radiation of first wave length and exporting the first of the first signal
Device, for sensing the radiation of second wave length and exporting the second radiation sensor of secondary signal, and for sensing the 3rd wavelength
The 3rd radiation sensor of the 3rd signal is radiated and exports, first, second, and third signal is the mutually different purple of wavelength
External signal；
Data processing unit, including explosion judgment module, for being judged whether based on first, second, and third signal
Detonation simultaneously sends alarm signal.
2. multispectral ultraviolet detonation detection means according to claim 1, it is characterised in that the data processing unit is also
Including threshold value comparison module, for by the amplitude (A, B, C) of first, second, and third signal respectively with corresponding first, second
With the 3rd threshold value (A0、B0、C0) be compared, it is quick-fried if the amplitude of any two signals is more than correspondence threshold value in three signals
Combustion judge module judges to have detonation and sends alarm signal.
3. multispectral ultraviolet detonation detection means according to claim 1, it is characterised in that the data processing unit is also
Including threshold value comparison module, for by the amplitude (A, B, C) of first, second, and third signal respectively with corresponding first, second
With the 3rd threshold value (A0、B0、C0) be compared, if the amplitude of three signals is all higher than correspondence threshold value, explosion judgment module
There is detonation and send alarm signal in judgement.
4. the multispectral ultraviolet detonation detection means according to claim 1,2 or 3, it is characterised in that the data processing
Unit also includes amplitude com parison module, for by the first comparative result of the absolute difference of first and second signal amplitude
M and the 4th threshold value M0Be compared, and by described second and the 3rd signal amplitude absolute difference the second comparative result N with
5th threshold value N0It is compared, if meeting following formula
0.9M0＜ M ＜ 1.1M0And 0.9N0＜ N ＜ 1.1N0
Then explosion judgment module judges to have detonation and sends alarm signal.
5. the multispectral ultraviolet detonation detection means according to claim 1,2 or 3, it is characterised in that the data processing
Unit also includes amplitude com parison module, for by the first comparative result of the absolute difference of first and second signal amplitude
M and the 4th threshold value M0Be compared, and by described second and the 3rd signal amplitude absolute difference the second comparative result N with
5th threshold value N0It is compared, if meeting following formula, explosion judgment module judges to have detonation and sends alarm signal
0.95M0＜ M ＜ 1.05M0And 0.95N0＜ N ＜ 1.05N0。
6. multispectral ultraviolet detonation detection means according to claim 1, it is characterised in that described first, second and
The wavelength of three signals is determined according to detonation species to be measured.
7. multispectral ultraviolet detonation detection means according to claim 1, it is characterised in that described first, second and
Three radiation sensors can sense the ultraviolet light from the region where flame or flame field emission that may be present.
8. multispectral ultraviolet detonation detection means according to claim 1, it is characterised in that the multispectral ultraviolet detonation
Detection means further comprises warning circuit, and the warning circuit is alarmed according to the alarm signal from data processing unit.
9. multispectral ultraviolet detonation detection means according to claim 1, it is characterised in that the multispectral ultraviolet detonation
Detection means further comprises signal processing circuit, and the signal processing circuit carries out impedance to first, second, and third signal
Match somebody with somebody, amplify and filtering process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621386641.6U CN206557947U (en) | 2016-12-16 | 2016-12-16 | A kind of multispectral ultraviolet detonation detection means |
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| CN201621386641.6U CN206557947U (en) | 2016-12-16 | 2016-12-16 | A kind of multispectral ultraviolet detonation detection means |
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