CN210720143U - Poisonous and harmful gas monitoring device with focusing function - Google Patents
Poisonous and harmful gas monitoring device with focusing function Download PDFInfo
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- CN210720143U CN210720143U CN201921452797.3U CN201921452797U CN210720143U CN 210720143 U CN210720143 U CN 210720143U CN 201921452797 U CN201921452797 U CN 201921452797U CN 210720143 U CN210720143 U CN 210720143U
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Abstract
The utility model provides a poisonous and harmful gas monitoring device with the function of focusing, which comprises a fixing device, a concave reflector, a plane reflector, a xenon lamp and a corner mirror; the fixing device, the concave reflector, the plane reflector and the xenon lamp are respectively arranged on a bottom plate, and the bottom plate can vertically and horizontally move; the concave reflector, the plane reflector, the xenon lamp and the corner mirror are arranged in sequence; the fixing device is connected with an optical fiber, one end of the optical fiber forms an incident end face on the fixing device, and the other end of the optical fiber is connected with the spectrometer; the center of the concave reflector is provided with a small hole, a semi-transparent and semi-reflective mirror is arranged between the fixing device and the concave reflector, and a CCD imaging device is arranged above the semi-transparent and semi-reflective mirror. The utility model discloses can guarantee measuring result's accuracy according to the position deviation adjustment facula position of facula and incident terminal surface, improve the stability of system's work, make the system be in the best operating condition for a long time.
Description
Technical Field
The utility model relates to an atmosphere monitoring technology field, concretely relates to poisonous and harmful gas monitoring devices with to light function.
Background
The progress of the human industrial technology brings great convenience to daily life, and meanwhile, the increase of the concentration of various pollutants in the environment seriously affects the human health and the ecological environment. Continuous real-time monitoring of the concentration of pollutants in the atmosphere is becoming an important issue. In 1979, Platt et al first proposed a differential absorption spectroscopy (DOAS) method for Simultaneous real-time online monitoring of various atmospheric pollutants (Platt U, Pemer D. "Simultaneous measurements of atmospheric CH2O, O3, NO2 by differential optical absorption". Geophys Res,1979, 84: 6329-6335). The DOAS method emits ultraviolet-visible light emitted by a xenon lamp into a measured atmospheric environment, the ultraviolet-visible light is reflected by a reflection unit, and light rays parallelly return to the analysis equipment. Because the characteristic polluted gas in the atmosphere has characteristic absorption in the wavelength range of incident light, the type and the concentration of the polluted gas in the atmosphere can be determined by analyzing the received light by utilizing a differential absorption algorithm.
In a DOAS system, the light emitting and receiving units may be combined into a single unit (John M C Plane, "Differential optical interference photometer for measuring and transmitting magnetic traces". Rev Sci Instrum, 1992, 60(3): 1867-1877), and the emitted beam is reflected back to the receiving unit by a corner mirror at a distance from the instrument. The DOAS method has the following advantages in monitoring atmospheric pollution: can monitor various polluted gases simultaneously, and has high precision, wide monitoring range and the like. However, the environmental monitoring device needs to work 24 hours a day all the year around, and due to factors such as temperature change and environmental vibration in the long-time monitoring process, emergent light cannot accurately enter a corner mirror at a long distance after being transmitted in a long distance, so that the strength and the weakness of reflected light are caused, and the deviation direction of the light cannot be known only through light intensity change, which brings great difficulty to light adjustment.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a poisonous and harmful gas monitoring device with the function of light focusing, which can adjust the position of the optical fiber facula relative to the incident end face in real time, ensure the maximum light intensity received by the optical fiber and has high equipment stability; the utility model also provides a poisonous and harmful gas's monitoring method, the accuracy of monitoring result is high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a poisonous and harmful gas monitoring device with the function of focusing light comprises a fixing device, a concave reflector, a plane reflector, a xenon lamp and a corner mirror;
the fixing device, the concave reflector, the plane reflector and the xenon lamp are respectively arranged on a bottom plate, and the bottom plate can vertically and horizontally move; the concave reflector, the plane reflector, the xenon lamp and the corner mirror are arranged in sequence;
the fixing device is connected with an optical fiber, one end of the optical fiber forms an incident end face on the fixing device, and the other end of the optical fiber is connected with the spectrometer;
a small hole is formed in the center of the concave reflector, and the concave reflector can reflect light emitted by the xenon lamp in parallel; the corner mirror can reflect the light reflected by the concave mirror in parallel, and the concave mirror focuses and reflects the light reflected by the corner mirror;
the plane reflector can reflect the light focused and reflected by the concave reflector to the incident end face and form a light spot;
the fixing device with be equipped with semi-transparent semi-reflecting mirror between the concave surface speculum, semi-transparent semi-reflecting mirror's top is equipped with CCD image device, semi-transparent semi-reflecting mirror can with the facula is relative the positional deviation of incident terminal surface reflects for CCD image device.
Further, the device also comprises a computer, and the computer is respectively connected with the spectrograph and the CCD imaging device.
Further, the bottom plate is connected with an adjusting system, and the adjusting system can drive the bottom plate to vertically and horizontally move.
Further, the adjusting system comprises a driving structure and a controller, the driving structure is connected with one end, close to the xenon lamp, of the bottom plate, and the driving structure is connected with the controller.
Furthermore, the adjusting system comprises a universal supporting structure, the universal supporting structure and the driving structure are respectively connected with two ends of the bottom plate, and the universal supporting structure can be matched with the bottom plate moving device to realize horizontal and vertical movement of the bottom plate.
Compared with the prior art, the utility model has the beneficial technical effects that: the utility model discloses a poisonous and harmful gas monitoring devices with to light function, shoot the positional deviation of facula relative incidence terminal surface through semi-transparent semi-reflecting mirror and CCD image device, governing system can carry out vertical and horizontal adjustment to the bottom plate according to this positional deviation, make facula and incident terminal surface coincidence, the strongest light is received to optic fibre, external environment changes the influence to the monitoring result has been overcome, measuring result's accuracy has been guaranteed, and the stability of system has greatly been improved, make the system be in stable operating condition for a long time.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is the imaging schematic diagram of the CCD target surface in the embodiment of the present invention.
In the figure: 1-spectrometer, 2-optical fiber, 3-fixing device, 4-CCD imaging device, 5-half-lens, 6-concave reflector, 7-plane reflector, 8-xenon lamp, 9-corner mirror, 10-computer, 11-universal supporting structure, 12-bottom plate, 13-driving structure, 14-controller, 20-optical fiber chuck, 21-incident end face, 22-light spot.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, a poisonous and harmful gas monitoring device with a light-focusing function comprises a fixing device 3, a concave reflector 6, a plane reflector 7, a xenon lamp 8 and a corner mirror 9;
specifically, the fixing device 3, the concave reflector 6, the plane reflector 7 and the xenon lamp 8 are respectively arranged on a bottom plate 12, and the bottom plate 12 can move vertically and horizontally; the concave reflector 6, the plane reflector 7, the xenon lamp 8 and the corner mirror 9 are arranged in sequence;
the fixing device 3 is connected with the optical fiber 2, one end of the optical fiber 2 is fixed by an optical fiber chuck 20 arranged on one side of the fixing device 3 close to the concave reflector 6, an incident end face 22 is formed on the fixing device 3, and external light can enter the optical fiber 2 from the incident end face 22; the other end of the optical fiber 2 is connected with the spectrometer 1, and the spectrometer 1 can analyze light entering the optical fiber 2 from the incident end face 22, so as to analyze and monitor the type and concentration of toxic and harmful gases in the environment;
a small hole is formed in the center of the concave reflector 6, and the concave reflector 6 can reflect light emitted by the xenon lamp 8 in parallel; the corner mirror 9 can reflect the light reflected by the concave reflecting mirror 6 in parallel, and the concave reflecting mirror 6 focuses and reflects the light reflected by the corner mirror 9;
the plane reflector 7 can reflect the light focused and reflected by the concave reflector 6 to the incident end surface 22 and form a light spot 23;
the xenon lamp 8 emits light which sequentially passes through the concave reflector 6 for parallel reflection, the corner mirror 9 for reflection, the concave reflector 6 for focusing reflection and the plane reflector 7 for reflection, passes through a small hole in the center of the concave reflector 6, reaches the incident end face on the fixing device 3, then enters the spectrometer 1 through the optical fiber 2, is analyzed by the spectrometer 1 and obtains a monitoring result;
when the factors such as temperature and vibration in the monitoring environment change, the focused light reflected by the plane mirror 7 cannot be completely aligned to the incident end face 22, that is, the light spot 23 has a position deviation relative to the incident end face 22, so that the intensity of the light received by the spectrometer 1 through the optical fiber 2 is insufficient, which results in poor accuracy of the monitoring result;
a semi-transparent and semi-reflective mirror 5 is arranged between the fixing device 3 and the concave reflecting mirror 6, a CCD imaging device 4 is arranged above the semi-transparent and semi-reflective mirror 5, and the semi-transparent and semi-reflective mirror 5 can reflect the position deviation of the light spot 23 relative to the incident end face 22 to the CCD imaging device 4;
when the position of the light spot 23 is deviated from the position of the incident end face 22, the vertical and horizontal translation kinetic energy of the bottom plate 12 changes the direction of the incident light of the incident end face 22, so as to adjust the position deviation between the light spot 23 and the incident end face 22 to an optimal state; the bottom plate 12 can be adjusted according to the deviation information transmitted by the CCD imaging device 4, so that the light spot 23 generated by the incident light on the fixing device 3 is matched with the incident end face 22, thereby maximizing the light intensity received by the spectrum and ensuring the accuracy of the monitoring result.
The utility model discloses an in the embodiment, this design still contains the computer, and the computer is connected with spectrum appearance and CCD image device respectively, and spectrum appearance and CCD image device can be respectively analysis result and offset structure transmit the computer on and preserve, make things convenient for the monitoring personnel to look over.
Optionally, the bottom plate is connected to an adjusting system, the adjusting system can drive the bottom plate 12 to move vertically and horizontally, and when the CCD imaging device 4 displays that the light spot 23 and the incident end 22 face have a position deviation, the adjusting system can drive the bottom plate 12 to move correspondingly according to the position deviation, so as to adjust the direction of the incident light of the incident end face 22, and optimize the position deviation between the light spot 23 and the incident end face 22.
In another embodiment of the present invention, the adjusting system comprises a driving structure 13 and a controller 14, the driving structure 13 is connected to one end of the bottom plate 12 close to the xenon lamp 8, the driving structure 13 can drive the bottom plate 12 to move vertically and horizontally, the controller 14 is connected to the driving structure 13, and the controller 14 can control the driving structure 13 to operate;
the controller 14 may also be connected to the computer 10, and the computer 10 can send a corresponding control signal to the controller 14 according to information transmitted by the CCD imaging device 4, and the controller 14 controls the driving structure 13 to drive the bottom plate 12 to move according to the control signal, so as to adjust the position of the light spot 23.
Preferably, the adjusting system further comprises a universal support structure 11, the universal support structure 11 and the bottom plate 12 moving structure are respectively connected to two ends of the bottom plate 12, and the universal support structure 11 can cooperate with the bottom plate moving device 13 to realize horizontal and vertical movement of the bottom plate 12.
The utility model discloses a poisonous and harmful gas monitoring devices with to light function, shoot the positional deviation of facula relative incidence terminal surface through semi-transparent semi-reflecting mirror and CCD image device, governing system can carry out vertical and horizontal adjustment to the bottom plate according to this positional deviation, make facula and incident terminal surface coincidence, the strongest light is received to optic fibre, external environment changes the influence to the monitoring result has been overcome, measuring result's accuracy has been guaranteed, and the stability of system has greatly been improved, make the system be in stable operating condition for a long time.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A poisonous and harmful gas monitoring device with the function of focusing light is characterized by comprising a fixing device, a concave reflector, a plane reflector, a xenon lamp and a corner mirror;
the fixing device, the concave reflector, the plane reflector and the xenon lamp are respectively arranged on a bottom plate, and the bottom plate can vertically and horizontally move; the concave reflector, the plane reflector, the xenon lamp and the corner mirror are arranged in sequence;
the fixing device is connected with an optical fiber, one end of the optical fiber forms an incident end face on the fixing device, and the other end of the optical fiber is connected with the spectrometer;
a small hole is formed in the center of the concave reflector, and the concave reflector can reflect light emitted by the xenon lamp in parallel; the corner mirror can reflect the light reflected by the concave mirror in parallel, and the concave mirror focuses and reflects the light reflected by the corner mirror;
the plane reflector can reflect the light focused and reflected by the concave reflector to the incident end face and form a light spot;
the fixing device with be equipped with semi-transparent semi-reflecting mirror between the concave surface speculum, semi-transparent semi-reflecting mirror's top is equipped with CCD image device, semi-transparent semi-reflecting mirror can with the facula is relative the positional deviation of incident terminal surface reflects for CCD image device.
2. The device for monitoring toxic and harmful gases with light focusing function according to claim 1, further comprising a computer, wherein the computer is connected to the spectrometer and the CCD imaging device respectively.
3. A device for monitoring toxic and harmful gas with a light focusing function according to claim 1, wherein the base plate is connected with a regulating system, and the regulating system can drive the base plate to move vertically and horizontally.
4. The apparatus for monitoring toxic and harmful gas with a light focusing function according to claim 3, wherein the adjusting system comprises a driving structure and a controller, the driving structure is connected with one end of the bottom plate near the xenon lamp, and the driving structure is connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921452797.3U CN210720143U (en) | 2019-09-03 | 2019-09-03 | Poisonous and harmful gas monitoring device with focusing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921452797.3U CN210720143U (en) | 2019-09-03 | 2019-09-03 | Poisonous and harmful gas monitoring device with focusing function |
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| Publication Number | Publication Date |
|---|---|
| CN210720143U true CN210720143U (en) | 2020-06-09 |
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| CN201921452797.3U Active CN210720143U (en) | 2019-09-03 | 2019-09-03 | Poisonous and harmful gas monitoring device with focusing function |
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| CN (1) | CN210720143U (en) |
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- 2019-09-03 CN CN201921452797.3U patent/CN210720143U/en active Active
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