CN101634626B - Active-passive integrated atmospheric pollution measuring system and measuring method thereof - Google Patents
Active-passive integrated atmospheric pollution measuring system and measuring method thereof Download PDFInfo
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- CN101634626B CN101634626B CN200910194979XA CN200910194979A CN101634626B CN 101634626 B CN101634626 B CN 101634626B CN 200910194979X A CN200910194979X A CN 200910194979XA CN 200910194979 A CN200910194979 A CN 200910194979A CN 101634626 B CN101634626 B CN 101634626B
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Abstract
The invention relates to an active-passive integrated atmospheric pollution measuring system and a measuring method thereof, wherein the measuring method comprises the following steps: in an active status, an optical receiving unit and an optical emitting unit are coaxial to receive lights emitted from an artificial light source; and in a passive status, a stepped motor drives the optical receiving unit to rotate to other directions to receive solar scattered lights. The measuring system for implementing the method comprises the artificial light source, a remote angular reflecting mirror, an optical light-splitting system, a computer, the optical emitting unit and the optical receiving unit, wherein the artificial light source and the optical emitting unit are arranged in a straight line, and the optical light-splitting system is connected with the optical receiving unit by optical fibers; and the stepped motor is connected with the optical receiving unit and used for controlling the optical receiving unit to rotate in a vertical plane. The measuring system and the measuring method can not only measure atmospheric pollution near the ground, but also measure upper atmospheric pollution.
Description
Technical field
The present invention relates to the environmental optics field of measuring technique, relate to a kind of master, passive integrated atmospheric pollution measuring system and measuring method specifically.
Background technology
At present to dusty gas in the atmosphere, mainly contain air nitrogen dioxide, sulphuric dioxide, ozone automonitor and long-range difference absorption spectrum gaseous contamination monitoring device like the measurement of nitrogen dioxide, sulphuric dioxide, ozone.
Automonitor is pumped into gas to be measured in the instrument earlier through sampling pipe when monitoring, makes itself and some material carry out chemical reaction; Or with UV-irradiation or utilize the uv absorption principle to measure, when working, earlier nitrogen dioxide is changed into nitrogen monoxide such as the nitrogen dioxide analyser; Let nitrogen monoxide and excessive ozone reaction again, produce the nitrogen dioxide of excited state, the nitrogen dioxide of this excited state is very unstable; Ground state is returned in very fast transition; And emission wavelength ranges is the light of 600～3000nm, confirms nitric oxide production concentration according to the emission light intensity that records, and extrapolates content of nitrogen dioxide by nitric oxide concentration at last.Ozone analyzer utilizes ultraviolet absorption method, at first appearance gas is fed absorption cell, uses UV-irradiation then, and contrast is by uv absorption and do not have the light of uv absorption, can analyze the concentration of ozone in kind gas.Sulphuric dioxide is to adopt ultraviolet fluorescence method, and instrument generally is made up of sample cell, ultraviolet source, detector, during monitoring; Sulphuric dioxide is fed sample cell, use the UV-irradiation of wavelength 190～300nm then, transit to excited state after the sulfur dioxide molecule absorbing ultraviolet light; When the sulfur dioxide molecule that is in excited state is got back to ground state; Launch near the Ultraluminescence of peak wavelength 330nm, this fluorescence intensity and sulfur dioxide concentration are linear, and then extrapolate sulfur dioxide concentration again.But the weak point of this quasi-instrument is every kind of instrument can only measure a kind of pollutant, and the instrument maintenance workload is big, and can only near ground, sample, and can not measure the atmospheric environment of upper zone.
For long-range difference absorption spectrum gaseous contamination monitoring device, it is to utilize gas molecule to the characteristic absorption principle work of some wavelength light.Long-range difference absorption spectrum appearance in the market all is an active mode; Its course of work is that emission connects/receives telescope and fixes at one end; A corner reflector is placed in place about distance 500～1000m, and telescope is launched the light that artificial light source (high pressure xenon lamp) sends, through being received by telescope after the corner reflector reflection again; Transport light to spectrometer through optical fiber then and carry out beam split; The optical signals detector detects, and sends into computing machine and carry out spectral analysis, is finally inversed by the concentration of light path through pollutant in the zone.Also there is the article report to utilize diffusion light of the sun to carry out passive mode work at present, the upper atmosphere pollution thing is studied, but do not see on the market that relevant instrument and equipment occurs.
Automatic analytical instrument above-mentioned extracts an appearance gas owing to need to pass through sampling pipe, thereby can only near ground, carry out point measurement.Initiatively the corner reflector of long-range difference absorption spectrum gaseous contamination monitoring device need be installed on the buildings, thereby also can only near ground, measure, and can't realize large-scale atmospheric environment is particularly carried out observational study to the upper atmosphere environment.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can be applicable near atmospheric environment and the master of the upper atmosphere environment ground, passive integrated atmospheric pollution measuring method simultaneously.
Another object of the present invention provides a kind of master of above-mentioned measuring method, passive integrated atmospheric pollution measuring system of using.
The objective of the invention is to realize like this:
A kind of master, passive integrated atmospheric pollution measuring method are switched between active state and passive state through the computer controlled measurement system;
Active state: the adjustment artificial light source, Optical Transmit Unit be positioned at the distant place corner reflector be on the same straight line; Light receiving unit and Optical Transmit Unit are coaxial; Reception by artificial light source send, through light emitting units emitting and by the light of at a distance corner reflector reflected back; The light that receives carries out beam split, is converted into electric signal to the optics beam splitting system through Optical Fiber Transmission, and electric signal is admitted to computing machine analysis, draws the gas concentration of surveying;
Passive state: the openend of light receiving unit is aimed at sky; Receive diffusion light of the sun; The diffusion light of the sun that receives carries out beam split, is converted into electric signal to the optics beam splitting system through Optical Fiber Transmission, and electric signal is admitted to computing machine analysis, draws the gas concentration of surveying;
The computer-controlled stepper motor running; Stepper motor drives light receiving unit and in perpendicular, rotates: light receiving unit goes to Optical Transmit Unit when coaxial; The said measuring system state that has the initiative, when light receiving unit turns to other direction, said measuring system is in passive state.
A kind of master of above-mentioned measuring method, passive integrated atmospheric pollution measuring system realized comprises artificial light source, is positioned at corner reflector, optics beam splitting system and computing machine at a distance, and this system also comprises:
Optical Transmit Unit, adjacent setting with said artificial light source;
Light receiving unit is located on the same straight line with said artificial light source, Optical Transmit Unit, and said Optical Transmit Unit can rotate in perpendicular, and said optics beam splitting system is connected with said light receiving unit through optical fiber;
Stepper motor is connected with light receiving unit, and said stepper motor is used to control light receiving unit and in perpendicular, rotates.
Wherein: said Optical Transmit Unit comprises first plane mirror and the first sphere concave mirror; The first sphere concave mirror is arranged on the side near artificial light source; The center of the said first sphere concave mirror is provided with light hole, and the light that artificial light source sends passes said light hole and is mapped on said first plane mirror; Said light receiving unit comprises second plane mirror and the second sphere concave mirror, and the center of the said second sphere concave mirror is provided with the light delivery outlet, and the incident end of said optical fiber is fixed in the said smooth delivery outlet; Said second plane mirror is located at the openend of said light receiving unit, and the said second sphere concave mirror is located at the end of said light receiving unit away from opening; Said artificial light source is the ultraviolet-visible light source.
Master of the present invention, passive integrated atmospheric pollution measuring system pass through the master of computer settings system, passive conversion of operation state; Active state utilizes artificial light source that near the air environmental pollution ground is measured; Can be applicable to day and night simultaneously; Passive state utilizes diffusion light of the sun to be mainly used in to upper atmosphere environmental pollution and measures, and is applicable to daytime.
When system had the initiative state, light receiving unit and Optical Transmit Unit were coaxial, and the light that artificial light source sends is mapped on first plane mirror after passing said light hole; Reflex to the first sphere concave mirror by first plane mirror again; After the first sphere concave mirror is collimated into directional light, be transmitted in the atmosphere and go, the light that is emitted in the atmosphere reflects back into measuring system through corner reflector at a distance, and the light receiving unit openend is aimed at the radiation direction of reflected back; Receive the light of reflected back; Converge in second plane mirror through the second sphere concave reflection mirror reflection, reflex to the light outlet aperture at the second sphere concave mirror center again by second plane mirror, carry out beam split, be converted into electric signal to the optics beam splitting system through Optical Fiber Transmission; Electric signal is admitted to computing machine analysis, draws the gas concentration of surveying.
Computer-controlled stepper motor work, stepper motor drives light receiving unit and in perpendicular, rotates, when light receiving unit forwards other direction to; System gets into passive state; Light receiving unit receives diffusion light of the sun, converges in the light delivery outlet through the second sphere concave mirror and the second plane reflection mirror reflection, carries out beam split, is converted into electric signal to the optics beam splitting system through Optical Fiber Transmission; Electric signal is admitted to computing machine analysis, draws the gas concentration of surveying.
The present invention is owing to adopted technique scheme; Make it compared with prior art; Have the following advantages and good effect: master provided by the present invention, passive integrated atmospheric pollution measuring method; Through the switching between active state and the passive state, can be applicable to measurement simultaneously near the air environmental pollution ground and upper atmosphere environmental pollution; Master provided by the present invention, passive integrated atmospheric pollution measuring system; Switch between active state and passive state through the computer controlled measurement system; Optical Transmit Unit and light receiving unit branch are arranged; And connect stepper motor at the light receiving unit place, stepper motor is controlled the rotation of light receiving unit under the setting of computing machine, makes total system lead, to switch between passive state; Make this measuring system to measure, also can measure the upper atmosphere environmental pollution near the air environmental pollution ground.
Description of drawings
Through following embodiments of the invention and description taken together with the accompanying drawings, other advantage of the present invention and characteristic are shown, this embodiment provides with the form of instance, but is not limited to this, wherein:
Fig. 1 is the basic structure synoptic diagram of master of the present invention, passive integrated atmospheric pollution measuring system.
Wherein: 1. artificial light source; 2. Optical Transmit Unit; 21. first plane mirror; 22. the first sphere concave mirror; 220. light hole; 3. light receiving unit; 31. second plane mirror; 32. the second sphere concave mirror; 320. light delivery outlet; 4. stepper motor; 5. optical fiber; 6. optics beam splitting system; 7. computing machine.
Embodiment
Master as shown in Figure 1, passive integrated atmospheric pollution measuring system comprise artificial light source 1, Optical Transmit Unit 2, are positioned at corner reflector (not shown), light receiving unit 3, stepper motor 4, optics beam splitting system 6 and computing machine 7 at a distance.In the present embodiment; Artificial light source 1 is the ultraviolet-visible light source; Optical Transmit Unit 2 and artificial light source 1 adjacent setting; Light receiving unit 3 is located on the same straight line with artificial light source 1, Optical Transmit Unit 2, and light receiving unit 3 can rotate in perpendicular, and optics beam splitting system 6 is connected with light receiving unit 3 through optical fiber 5.Stepper motor 4 is connected with light receiving unit 3, is used to control light receiving unit 3 and in perpendicular, rotates.Wherein, Optical Transmit Unit 2 comprises first plane mirror 21 and the first sphere concave mirror 22; The first sphere concave mirror 22 is arranged on the side near artificial light source 1, and the center of the first sphere concave mirror 22 is provided with light hole 220, and light receiving unit 3 comprises second plane mirror 31 and the second sphere concave mirror 32; The center of the second sphere concave mirror 32 is provided with light delivery outlet 320; The incident end of optical fiber 5 is fixed in the light delivery outlet 320, and second plane mirror 31 is located at the openend of light receiving unit 3, and the second sphere concave mirror 32 is located at the end of light receiving unit 3 away from opening.
Active state utilizes artificial light source that near the air environmental pollution ground is measured, and can be applicable to simultaneously that day and night, passive state utilize diffusion light of the sun to be mainly used in to upper atmosphere environmental pollution and measure, and is applicable to daytime.
According to the setting of computing machine 7, whole measuring system is carried out the conversion between active state and the passive state, when system has the initiative state; Light receiving unit 3 is coaxial with Optical Transmit Unit 2; The light that artificial light source 1 sends is mapped on first plane mirror 21 after passing light hole 220, reflexes to the first sphere concave mirror 22 by first plane mirror 21 again, after the first sphere concave mirror 22 is collimated into directional light, is transmitted in the atmosphere and goes; The light that is emitted in the atmosphere reflects back into measuring system through corner reflector (not shown) at a distance; Light receiving unit 3 openends are aimed at the radiation direction of reflected back, receive the light of reflected back, converge in second plane mirror 31 through 32 reflections of the second sphere concave mirror; Reflex to light delivery outlet 320 places at the second sphere concave mirror, 32 centers again by second plane mirror 31; Be transferred to optics beam splitting system 6 through optical fiber 5 and carry out beam split, be converted into electric signal, electric signal is admitted to computing machine 7 and analyzes, and draws the gas concentration of surveying.
When needs measuring system entering passive state, 4 work of computing machine 7 control step motors, stepper motor 4 drives light receiving units 3 and in perpendicular, rotates; Light receiving unit 3 forwards other direction to; System gets into passive state, and light receiving unit 3 receives diffusion light of the sun, and is identical with active state; Received light converges in light delivery outlet 320 through the second sphere concave mirror 32 and 31 reflections of second plane mirror; Be transferred to optics beam splitting system 6 through optical fiber 5 and carry out beam split, be converted into electric signal, electric signal is admitted to computing machine 7 and analyzes, and draws the gas concentration of surveying.Stepper motor 4 drives light receiving unit 3 and turns to different angles, can measure the pollution condition of upper atmosphere zones of different.
Each parts of above-mentioned each unit are existing commercially available prod, no specific (special) requirements.
Claims (6)
1. a master, passive integrated atmospheric pollution measuring method is characterized in that this method switches between active state and passive state through the computer controlled measurement system;
Active state: adjust artificial light source, Optical Transmit Unit and place corner reflector at a distance to be on the same straight line; Light receiving unit and Optical Transmit Unit are coaxial; Reception by artificial light source send, through light emitting units emitting and by the light of at a distance corner reflector reflected back; The light that receives carries out beam split, is converted into electric signal to the optics beam splitting system through Optical Fiber Transmission, and electric signal is admitted to computing machine analysis, draws the gas concentration of surveying;
Passive state: the openend of light receiving unit is aimed at sky; Receive diffusion light of the sun; The diffusion light of the sun that receives carries out beam split, is converted into electric signal to the optics beam splitting system through Optical Fiber Transmission, and electric signal is admitted to computing machine analysis, draws the gas concentration of surveying;
The computer-controlled stepper motor running; Stepper motor drives light receiving unit and in perpendicular, rotates: light receiving unit goes to Optical Transmit Unit when coaxial; The said measuring system state that has the initiative, when light receiving unit turns to other direction, said measuring system is in passive state.
2. realize the master of method according to claim 1, passive integrated atmospheric pollution measuring system for one kind, comprise artificial light source, be positioned at corner reflector, optics beam splitting system and computing machine at a distance, it is characterized in that this system also comprises:
Optical Transmit Unit, adjacent setting with said artificial light source;
Light receiving unit is located on the same straight line with said artificial light source, Optical Transmit Unit, and said light receiving unit can rotate in perpendicular, and said optics beam splitting system is connected with said light receiving unit through optical fiber;
Stepper motor is connected with light receiving unit, and said stepper motor is used to control light receiving unit and in perpendicular, rotates.
3. measuring system as claimed in claim 2; It is characterized in that: said Optical Transmit Unit comprises first plane mirror and the first sphere concave mirror; The first sphere concave mirror is arranged on the side near artificial light source; The center of the said first sphere concave mirror is provided with light hole, and the light that artificial light source sends passes said light hole and is mapped on said first plane mirror.
4. measuring system as claimed in claim 2; It is characterized in that: said light receiving unit comprises second plane mirror and the second sphere concave mirror; The center of the said second sphere concave mirror is provided with the light delivery outlet, and the incident end of said optical fiber is fixed in the said smooth delivery outlet.
5. measuring system as claimed in claim 4 is characterized in that: said second plane mirror is located at the openend of said light receiving unit, and the said second sphere concave mirror is located at the end of said light receiving unit away from opening.
6. measuring system as claimed in claim 2 is characterized in that: said artificial light source is the ultraviolet-visible light source.
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| CN106568712B (en) * | 2015-07-23 | 2019-01-15 | 苏州微纳激光光子技术有限公司 | It is a kind of can remote adjustment long light path toxic and harmful gas monitor and its adjusting method |
| CN105548041A (en) * | 2015-12-09 | 2016-05-04 | 王仲英 | Device and method for detecting gas leakage |
| CN105548042A (en) * | 2015-12-09 | 2016-05-04 | 王仲英 | Detection apparatus and method for gas leakage |
| CN105572060A (en) * | 2015-12-10 | 2016-05-11 | 王仲英 | Device and method for detecting gas leakage |
| CN105588808A (en) * | 2015-12-10 | 2016-05-18 | 王仲英 | Detection device and method for gas leakage |
| CN109896585A (en) * | 2019-04-26 | 2019-06-18 | 德州汉升光电科技有限公司 | A kind of 360 degree of photosensitive ultraviolet-ray sensors |
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