Dust instrument self-checking deviceTechnical field
The present invention relates to a kind of dust instrument self-checking devices.
Background technique
Dust instrument is the equipment for detecting dust content in pollution sources, and existing dust instrument, which mostly uses, to be based on winning law than erlangOptoelectronic detecting device, principle be by detection light pass through pollution sources, detection light pass through with dust pollution sources when, pollutionDust in source will cause detection light and generate scattering, receives scattering light by detector and analyzes the energy datum of scattering light, noEnergy datum too corresponds to unique dust content value, passes through the dust content value that can be obtained in pollution sources that converts.However,After a period of time use, the light source for issuing detection light can generate a degree of decaying, after light source changes, what light source issuedThe energy of detection light can also weaken accordingly, eventually lead to the scattered energy that detector receives and become smaller, the powder analyzedDust content is relatively low compared to actual dust content.
In order to solve this problem, existing dust content using in detection module place calibration block come to dust instrument intoRow calibration, calibration process are as follows: the pollution sources first in emptying detection module guarantee examining in detection module without dustIt surveys in module and is manually inserted into calibration block, calibration block is really the calibration eyeglass by polishing, when detection light passes through calibration block, inspectionThe generation scattering of photophase is surveyed, detector receives scattering light and obtains the energy of scattering light, and detector compares primary light source generationScattered energy that scattered energy and school clocklike light source generate obtains the attenuation ratio of light source, and according to double scattering luminous energyThe variation ratio of amount adjusts the corresponding relationship of dust content in scattered energy and pollution sources, to complete to calibrate.
But current calibration block mostly uses motor-driven mode to realize the conversion to light source direction, increases systemComplexity, while adding the source of trouble；And difficulty is debugged between each eyeglass, is not easy to on-site maintenance.
Summary of the invention
The object of the present invention is to provide a kind of dust instrument self-checking devices, to solve existing dust instrument self-checking deviceStructure is complicated, is not easy to the problem of field adjustable.
In order to solve the above technical problems, the present invention provides a kind of dust instrument self-checking device, including receiving transducer, calibrationUnit and straight quasi-optical source, Amici prism, the first intelligent dimming glass and the light trapping set gradually from right to left；
First intelligent dimming glass is arranged on the primary optical axis of the Amici prism；
The calibration unit includes reflecting mirror and simulation mirror, and the primary optical axis of the Amici prism is arranged in the reflecting mirrorOn vertical line, the right side of the reflecting mirror is arranged in the simulation mirror；
The right side of the simulation mirror is arranged in the receiving transducer, for receiving the optical signal or use that dust particles scatterIn the optical signal that reception simulation mirror is launched.
Further, the Amici prism is depolarization Amici prism.
Further, the simulation mirror includes the second intelligent dimming glass to fit together and scattering optical analog lens.
Further, the inside of the light trapping is in honeycomb, and optical signal is decayed after reflecting repeatedly inside it.
The invention has the benefit that the application is realized in the way of intelligent dimming glass and scattering optical analog lensThe automatic calibration of dust；By being truly reflected field condition using scattering optical analog lens, by changing intelligent dimming glassThe state of glass controls light source, it can be achieved that the zero point of period instrument and range is appointed to calibrate automatically.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, at thisThe same or similar part, the illustrative embodiments and their description of the application are indicated using identical reference label in a little attached drawingsFor explaining the application, do not constitute an undue limitation on the present application.In the accompanying drawings:
Fig. 1 is the schematic diagram when low concentration dust instrument is in running order.
Fig. 2 is the schematic diagram when low concentration dust instrument is in align mode.
Wherein: 1, receiving transducer；2, mirror is simulated；3, reflecting mirror；4, collimated light source；5, prism；6, the first intelligent dimming glassGlass；7, dust particles；8, light trapping.
Specific embodiment
Dust instrument self-checking device as depicted in figs. 1 and 2, including receiving transducer 1, calibration unit and from right to leftStraight quasi-optical source, Amici prism 5, the first intelligent dimming glass 6 and the light trapping 8 set gradually, and the first intelligent dimming glassGlass 6 is arranged on the primary optical axis of the Amici prism 5；The calibration unit includes reflecting mirror 3 and simulation mirror 2, the reflecting mirror 3It is arranged on the vertical line of the primary optical axis of the Amici prism 5, the right side of the reflecting mirror 3 is arranged in the simulation mirror 2；It is described to connectThe right side that the simulation mirror 2 is arranged in probe 1 is received, for receiving the optical signal or be used to receive simulation that dust particles 7 scatterThe optical signal that mirror 2 is launched.
Above-mentioned intelligent dimming glass is that one layer of liquid crystal film (being commonly called as light modulation film, LC film), liquid crystal are clipped between layer glassFilm is covered on most central by PVB film, is subsequently placed in autoclave or general one-step method stove back warp crosses the process glue of high temperature and pressureIt closes.User controls the transparent and opaque state of glass whether passing through the on-off of control electric current.When dimming glass is closedWhen power supply, irregular spread state can be presented in the liquid crystal molecule inside electronic-control dimming glass, and light transmission is presented in automatically controlled glass at this timeAnd opaque apparent condition；After being powered to dimming glass, proper alignment is presented in the liquid crystal molecule of the inside, and light can be freeIt penetrates, pellucidity is presented in dimming glass moment at this time.
According to one embodiment of the application, the Amici prism 5 is depolarization Amici prism 5.Depolarization Amici prism 5It is then to compose a cube structure by carrying out being coated with multi-coated interference film on the inclined-plane of right-angle prism 5, make incident lightP-polarization component and S-polarization component have similar dichroism.Incident light can be kept as much as possible after the light splitting of Amici prism 5In original horizontal polarization and vertical polarization proportionate relationship, optical characteristics separating degree < 5% of P light and S light, dispersion is low, in colorProperty degree is good.According to one embodiment of the application, the simulation mirror 2 includes the second intelligent dimming glass to fit together and dissipatesPenetrate optical analog lens.
According to one embodiment of the application, the inside of the light trapping 8 is in honeycomb, and optical signal is inside it through repeatedlyDecay after refraction.
The course of work of this application is as follows:
When instrument is in running order, as shown in Figure 1.The first intelligent dimming glass 6 is in pellucidity at this time, and light canTo penetrate the first intelligent dimming glass 6 to be irradiated in the environment of dust particles 7.When being irradiated to dust particles 7, it can generateThe detection of forward scattering light can be completed in Mie scattering, detector.And the second intelligent dimming glass in mirror 2 is simulated at this time and is inOpaque state, reference light can not penetrate at this time, be blocked in 2 right side of simulation mirror.
When instrument is in align mode, as shown in Figure 2.The first intelligent dimming glass 6 is in opaque state at this time, light withoutMethod penetrates the second intelligent dimming glass to be blocked in its right side.And it is simulated at the second intelligent dimming glass in mirror 2 at this timeIn pellucidity, the reference light gone out through 5 sub-argument of Amici prism, directly by simulation mirror 2, is simulated in mirror 2 after reflecting mirror 3Scatter optical analog lens can SIMULATED SCATTERING optical signal, detector receive scattering optical analog lens simulation scattering light energyAmount compares the scattered energy of primary light source generation and dissipating for school clocklike light source generation finally by detector (not shown)Light energy is penetrated to obtain the attenuation ratio of light source, and adjusted according to the variation ratio of double scattering light energy scattered energy withThe corresponding relationship of dust content in pollution sources, to complete the accurate calibration of system.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared withGood embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the inventionArt scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at thisIn the scope of the claims of invention.