CN102621101A - Laser visibility meter - Google Patents
Laser visibility meter Download PDFInfo
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- CN102621101A CN102621101A CN2012100040654A CN201210004065A CN102621101A CN 102621101 A CN102621101 A CN 102621101A CN 2012100040654 A CN2012100040654 A CN 2012100040654A CN 201210004065 A CN201210004065 A CN 201210004065A CN 102621101 A CN102621101 A CN 102621101A
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Abstract
The invention relates to a laser visibility meter, which comprises a laser transmitting unit, a receiving unit and a signal acquiring and controlling unit, wherein the laser transmitting unit is composed of a laser, a transmitting telescope and a beam splitter, the receiving unit is composed of a receiving telescope and a filter, the signal acquiring and controlling unit is composed of a first photoelectric detector, a second photoelectric and an embedded computer, which are used for receiving laser signals, the front end of the transmitting telescope is provided with the beam splitter, the focal plane of the transmitting telescope is provided with the first photoelectric detector, the front end of the receiving telescope is provided with the filter, and the second photoelectric detector is arranged at the focal point of the receiving telescope. The laser visibility meter provided in the invention has the advantages of small volume, light weight, a compact structure, convenience in usage, a wide application scope, no need for cooperation targets, capability of adjusting metering angles at will and realizing visibility measurement in horizontal and slant ranges, low cost and convenience in operation and usage.
Description
Technical field
The present invention relates to the laser equipment technical field, specifically be meant the laser visiometer.
Background technology
Visibility is an important atmospheric parameter, and it has reflected the muddy degree of atmosphere, receives meteorologic factors such as mist, haze, stratus, and the influence of the atmospheric aerosol particles such as flue dust, dusty gas and sand and dust in the atmosphere.Visibility, especially tiltedly can journey path visibility size determining aircraft successfully land because the slant visibility the when horizontal visibility of runway and aircraft landing on decision height often difference is very big.When having face of land mist, the surface water horizontal visibility is very low and slant visibility is higher, judges according to horizontal visibility to cause aircraft normally to land, even causes socked-in; When having low stratus, horizontal visibility is higher and slant visibility is lower, judges according to horizontal visibility this moment and then can bring danger to aircraft landing.
Therefore; The development of visibility measurement instrument that is used to measure slant visibility is significant for improving aviation safety; Existing visibility at the airport surveying instrument mostly can only be measured the visibility in somewhere, the face of land; Can't provide the visibility information of a slant visibility accurately or a suitable segment distance (for example hundreds of rice is to several kilometers), and volume big, be inconvenient to move, cost is higher relatively.
Summary of the invention
Fundamental purpose of the present invention provides a kind of laser visiometer, visibility that can Measurement of Air, and volume is little, in light weight, easy to use.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of laser visiometer, it comprises: laser emission element, receiving element and signals collecting and control module, wherein:
Said laser emission element comprises: laser instrument, transmitter-telescope and beam splitter; Said receiving element comprises: receiving telescope and wave filter; Signals collecting and control module comprise first photodetector, second photodetector and the embedded computer that receives laser signal; The front end of said transmitter-telescope is provided with said beam splitter; The focal plane of said transmitter-telescope is provided with first photodetector, and said receiving telescope front end is provided with wave filter, and said receiving telescope along is provided with second photodetector;
The laser that said laser instrument penetrates is coupled to the along of said transmitter-telescope through optical fiber;
The laser of said along is through said transmitter-telescope and by said beam splitter separated into two parts: first's laser and second portion laser; First's laser is transmitted into the atmospheric exploration zone by said beam splitter; Second portion laser is back to said transmitter-telescope by said beam splitter reflection; And through being received by said first photodetector behind the said transmitter-telescope; Said first photodetector detects said second portion laser, converts said second portion laser into first signal, and said first signal is imported said embedded computer;
Said first laser gets into said receiving telescope through being surveyed by said second photodetector after the scattering through said wave filter; The laser that said second photodetector will detect after the said scattering converts secondary signal into, and said secondary signal is imported said embedded computer;
Said embedded computer is used to control said laser instrument emission laser, and first signal and the secondary signal of input are handled the value that obtains said visibility.
Preferably, said laser instrument is a fiber laser.
Preferably, said wave filter is a narrow band filter.
Preferably, said laser instrument is the laser instrument of pulse 532nm laser.
Preferably, said receiving telescope and said transmitter-telescope are for being wholely set.
Preferably, said beam splitter is the level crossing with reflection and transmission function that is obliquely installed.
Preferably, said wave filter is an optical filter.
The technical scheme of embodiment of the present invention; Have following beneficial effect: laser visiometer volume provided by the invention is little, in light weight, compact conformation, easy to use, be widely used, need not cooperative target; Can adjust arbitrarily and take measurement of an angle; Realization level and slant visibility are measured, and cost is low, and be easy for operation.
Description of drawings
The structural representation of the laser visiometer that Fig. 1 provides for the embodiment of the invention;
The light path principle figure of the laser visiometer that Fig. 2 provides for the embodiment of the invention.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of laser visiometer, and is as depicted in figs. 1 and 2, and this laser visiometer comprises: laser emission element 110, receiving element 120 and signals collecting and control module 130, wherein:
Said laser emission element 110 comprises: laser instrument 111, transmitter-telescope 112 and beam splitter 113; Said receiving element 120 comprises: receiving telescope 122 and wave filter 121; Signals collecting and control module 130 comprise first photodetector 131, second photodetector 132 and the embedded computer 133 that receives laser signal; 112 front ends of said transmitter-telescope are provided with said beam splitter 113; The along of said transmitter-telescope 112 is provided with first photodetector 131; Said receiving telescope 122 front ends are provided with wave filter 121, and said receiving telescope 122 along are provided with second photodetector 132, and said first photodetector 131 is connected said embedded computer 133 respectively with second photodetector 132.
The laser that said laser instrument 111 penetrates is coupled to the along of said transmitter-telescope 112 through optical fiber 115;
The laser of said along is through said transmitter-telescope 112 and by said beam splitter 113 separated into two parts: first's laser and second portion laser; First's laser is transmitted into the atmospheric exploration zone by said beam splitter 113; Second portion laser is reflected back into said transmitter-telescope 122 by said beam splitter 113; And through being received by said first photodetector 131 behind the said transmitter-telescope 122; Said first photodetector 131 detects said second portion laser, converts said second portion laser into first signal, and said first signal is imported said embedded computer 133;
Said first laser gets into said receiving telescope 122 through being surveyed by said second photodetector 132 after the scattering through said wave filter 121; The laser that said second photodetector 132 will detect after the said scattering converts secondary signal into, and said secondary signal is imported said embedded computer 133;
Said embedded computer 133 is used to control said laser instrument 111 emission laser.First signal of input triggers the data collecting card that embedded computer 133 connects, and controls its collecting work.The secondary signal of input is through obtaining the value of visibility after the calculating of embedded computer 133.
In the above-described embodiments, preferably, said laser instrument 111 is a fiber laser, little, low pulse energy of its volume and high repetition frequency.
In the above-described embodiments, preferably, said wave filter 121 is a narrow band filter, to imitate the ground unrest that suppresses.
In the above-described embodiments, preferably, said laser instrument 111 is the laser instrument of pulse 532nm laser.This laser instrument can penetrate wavelength near responsive value (550nm) of human eye or standard wavelength.
In the above-described embodiments, preferably, said receiving telescope 122 and said transmitter-telescope 112 be for being wholely set, its compact conformation, take up room little.
In the above-described embodiments, preferably, said wave filter 121 is an optical filter.
In the above-described embodiments, preferably, the level crossing with reflection and transmission function of said beam splitter 113 for being obliquely installed.
Embedded computer at first carries out the setting of initialization and parameter to external interface and data collecting card etc.If, then judge and whether need restart, before restarting, need close hardware switch and check hardware, again each hardware is carried out initialization owing to the reason initialization failure of hardware.Initialization if necessary can be set or revise after finishing running parameter, behind all parameter settings, can begin surveying work or directly withdraw from end.
Measure beginning, the laser instrument transponder pulse is coupled to telescope through optical fiber; Second portion laser by flat mirror reflects is received by first photodetector, and first photodetector triggers the data collecting card that embedded computer connects, and data collecting card is started working; Data collecting card gather that second photodetector detects through the second portion laser after the scattering, gathers n time, and the signal of the second portion laser that collects for n time totally obtains and exports secondary signal after on average; This moment, laser instrument stopped to launch laser; Embedded computer begins inverting visibility, and shows preservation visibility value, finishes at last to measure; Powered-down, laser instrument and computing machine, whole measurement finishes.
The machining accuracy of the laser visiometer that the foregoing description provides is less demanding, and cost is low; Adopt full immobilization and modular construction, need not too many adjustment, simple to operate, need not the professional can operate.And volume is little, in light weight, compact conformation, easy to use, be widely used, need not cooperative target.
This laser visiometer not only can be measured horizontal visibility, and can measure slant visibility and vertical visibility, can adjust angle arbitrarily and carry out many measurement of elevations, can adjust any measuring position and need not fixed installation, and adaptability is strong.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a laser visiometer is characterized in that, comprising: laser emission element, receiving element and signals collecting and control module, wherein:
Said laser emission element comprises: laser instrument, transmitter-telescope and beam splitter; Said receiving element comprises: receiving telescope and wave filter; Signals collecting and control module comprise first photodetector, second photodetector and the embedded computer that receives laser signal; The front end of said transmitter-telescope is provided with said beam splitter; The focal plane of said transmitter-telescope is provided with first photodetector, and said receiving telescope front end is provided with wave filter, and said receiving telescope along is provided with second photodetector;
The laser that said laser instrument penetrates is coupled to the along of said transmitter-telescope through optical fiber;
The laser of said along is through said transmitter-telescope and by said beam splitter separated into two parts: first's laser and second portion laser; First's laser is transmitted into the atmospheric exploration zone by said beam splitter; Second portion laser is back to said transmitter-telescope by said beam splitter reflection; And through being received by said first photodetector behind the said transmitter-telescope; Said first photodetector detects said second portion laser, converts said second portion laser into first signal, and said first signal is imported said embedded computer;
Said first laser gets into said receiving telescope through being surveyed by said second photodetector after the scattering through said wave filter; The laser that said second photodetector will detect after the said scattering converts secondary signal into, and said secondary signal is imported said embedded computer;
Said embedded computer is used to control said laser instrument emission laser, and first signal and the secondary signal of input are handled the value that obtains said visibility.
2. laser visiometer according to claim 1 is characterized in that said laser instrument is a fiber laser.
3. laser visiometer according to claim 1 is characterized in that said wave filter is a narrow band filter.
4. laser visiometer according to claim 1 or claim 2 is characterized in that said laser instrument is the laser instrument of pulse 532nm laser.
5. laser visiometer according to claim 1 or claim 2 is characterized in that said receiving telescope and said transmitter-telescope are for being wholely set.
6. like claim 1,2 or 3 said laser visiometers, it is characterized in that said beam splitter is the level crossing with reflection and transmission function that is obliquely installed.
7. like claim 1,2 or 3 said laser visiometers, it is characterized in that said wave filter is an optical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100040654A CN102621101A (en) | 2012-01-08 | 2012-01-08 | Laser visibility meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100040654A CN102621101A (en) | 2012-01-08 | 2012-01-08 | Laser visibility meter |
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| CN102621101A true CN102621101A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100040654A Pending CN102621101A (en) | 2012-01-08 | 2012-01-08 | Laser visibility meter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245299A (en) * | 2013-05-14 | 2013-08-14 | 东南大学 | High-spatial-resolution optical fiber sensing system based on wavelength tunable laser |
| CN104237173A (en) * | 2014-10-16 | 2014-12-24 | 四川鼎林信息技术有限公司 | Transmission type visibility meter capable of extending length of base line |
| CN105301674A (en) * | 2015-11-20 | 2016-02-03 | 安徽省大气探测技术保障中心 | Detection device of meteorological optical range |
| CN107421917A (en) * | 2017-05-17 | 2017-12-01 | 南京信息工程大学 | A kind of multifunction high-precision atmosphere visibility meter and visibility measurement method |
| CN110793945A (en) * | 2019-10-28 | 2020-02-14 | 北京空间机电研究所 | Synthetic white light atmospheric visibility meter and visibility measuring method |
| CN113640222A (en) * | 2021-07-27 | 2021-11-12 | 南京理工大学 | Handheld laser scattering type aerosol attenuation characteristic measuring instrument with double working modes |
| CN114488196A (en) * | 2021-12-09 | 2022-05-13 | 山东国耀量子雷达科技有限公司 | Highway distributed visibility remote sensing system |
Citations (5)
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| GB1304258A (en) * | 1970-07-03 | 1973-01-24 | ||
| JP2004157037A (en) * | 2002-11-07 | 2004-06-03 | Inc Engineering Co Ltd | Laser radar apparatus |
| CN101082591A (en) * | 2006-12-13 | 2007-12-05 | 王海燕 | Intelligent visibility tester |
| CN101526475A (en) * | 2009-04-10 | 2009-09-09 | 南京信息工程大学 | Transmission-type visibility measuring device and measuring method |
| CN101581786A (en) * | 2009-06-23 | 2009-11-18 | 中国科学院安徽光学精密机械研究所 | Semiconductor laser radar visibility meter |
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2012
- 2012-01-08 CN CN2012100040654A patent/CN102621101A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1304258A (en) * | 1970-07-03 | 1973-01-24 | ||
| JP2004157037A (en) * | 2002-11-07 | 2004-06-03 | Inc Engineering Co Ltd | Laser radar apparatus |
| CN101082591A (en) * | 2006-12-13 | 2007-12-05 | 王海燕 | Intelligent visibility tester |
| CN101526475A (en) * | 2009-04-10 | 2009-09-09 | 南京信息工程大学 | Transmission-type visibility measuring device and measuring method |
| CN101581786A (en) * | 2009-06-23 | 2009-11-18 | 中国科学院安徽光学精密机械研究所 | Semiconductor laser radar visibility meter |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245299A (en) * | 2013-05-14 | 2013-08-14 | 东南大学 | High-spatial-resolution optical fiber sensing system based on wavelength tunable laser |
| CN103245299B (en) * | 2013-05-14 | 2016-02-03 | 东南大学 | A kind of high spatial resolution optical fiber sensing system based on Wavelength tunable laser |
| CN104237173A (en) * | 2014-10-16 | 2014-12-24 | 四川鼎林信息技术有限公司 | Transmission type visibility meter capable of extending length of base line |
| CN105301674A (en) * | 2015-11-20 | 2016-02-03 | 安徽省大气探测技术保障中心 | Detection device of meteorological optical range |
| CN107421917A (en) * | 2017-05-17 | 2017-12-01 | 南京信息工程大学 | A kind of multifunction high-precision atmosphere visibility meter and visibility measurement method |
| CN107421917B (en) * | 2017-05-17 | 2024-04-19 | 南京信息工程大学 | Multifunctional high-precision atmospheric visibility meter and visibility measuring method |
| CN110793945A (en) * | 2019-10-28 | 2020-02-14 | 北京空间机电研究所 | Synthetic white light atmospheric visibility meter and visibility measuring method |
| CN113640222A (en) * | 2021-07-27 | 2021-11-12 | 南京理工大学 | Handheld laser scattering type aerosol attenuation characteristic measuring instrument with double working modes |
| CN113640222B (en) * | 2021-07-27 | 2024-06-07 | 南京理工大学 | Hand-held double-working-mode laser scattering type aerosol attenuation characteristic measuring instrument |
| CN114488196A (en) * | 2021-12-09 | 2022-05-13 | 山东国耀量子雷达科技有限公司 | Highway distributed visibility remote sensing system |
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Application publication date: 20120801 |