CN204594877U - Transmission-type visibility meter light-dividing device - Google Patents
Transmission-type visibility meter light-dividing device Download PDFInfo
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- CN204594877U CN204594877U CN201520251936.1U CN201520251936U CN204594877U CN 204594877 U CN204594877 U CN 204594877U CN 201520251936 U CN201520251936 U CN 201520251936U CN 204594877 U CN204594877 U CN 204594877U
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Abstract
The utility model discloses a kind of transmission-type visibility meter light-dividing device.It is by the light-dividing device in LED light source (1) and its light path, and measurement mechanism (3) on light-dividing device output light path and reference unit (4) composition, light-dividing device is fiber splitter (2), and its up optical interface is connected with LED light source (1) light, two descending optical interfaces are connected with measurement mechanism (3) and reference unit (4) light respectively; Described fiber splitter (2) is fused biconical taper fiber splitter or slab guide fiber splitter, and the up optical interface of described LED light source (1) and fiber splitter (2), the descending optical interface of fiber splitter (2) are to encapsulate with the light junction of reference unit (4) and are connected.It carries out contrast test through using light power meter to the light intensity that light-dividing device exports, and light stability improves an order of magnitude, and through actual measurement, when the light path in sample space is 40m, effectively can distinguish visibility 20km and 21km.
Description
Technical field
The utility model relates to a kind of transmission-type visibility meter, especially a kind of transmission-type visibility meter light-dividing device.
Background technology
Visibility is an index of reflection atmospheric transparency, meteorology refer to for the people with twenty-twenty vision can also see and recognize the maximum horizontal range of object under weather condition at that time from sky background, can measure objectively and use meteorological optical range (Meteorological optical range is called for short MOR) to represent.Meteorological optical range refer to colour temperature be the incandescent lamp of 2700K parallel beam luminous flux weaken for its initial value 0.05 time the required air path length passed through.People, in order to obtain visibility, often use transmission-type visibility meter, as the LT31 type transilluminator of Vaisala company of Finland.This transilluminator is avoid the fluctuation of LED light source output intensity on the impact of measurement result, specular spectral device is provided with in instrument, to be detected the paths of LEDs light that it separates by reference unit, the undulating quantity of LED light source output intensity is fed back to measurement mechanism, in order to revise the measurement result exported.Though this transilluminator has higher measuring accuracy, but there is weak point because of specular spectral device, first, the light-dividing device be made up of many minute surfaces is subject to the impact of environment because its structure is more complicated, change as vibration and temperature easily makes it produce mechanical shift, causes the light intensity of output to produce fluctuation; Secondly, the pollution that the steam in air and gasoloid also very easily make minute surface be subject in various degree, thus affect the stability of light intensity, and then degree of accuracy and the greatest measurement of visibility measurement is affected together with environment.
Utility model content
The technical problems to be solved in the utility model, for overcoming weak point of the prior art, provides a kind of structure simple, practical, transmission-type visibility meter light-dividing device easy to use.
For solving technical matters of the present utility model, the technical scheme adopted is: transmission-type visibility meter light-dividing device is by the light-dividing device in LED light source and its light path, and measurement mechanism on light-dividing device output light path and reference unit composition, particularly,
Described light-dividing device is fiber splitter;
The up optical interface of described fiber splitter is connected with LED light source light, two descending optical interfaces are connected with measurement mechanism and reference unit light respectively.
Further improvement as transmission-type visibility meter light-dividing device:
Preferably, fiber splitter is fused biconical taper fiber splitter, or slab guide fiber splitter.
Preferably, LED light source and the up optical interface of fiber splitter, the descending optical interface of fiber splitter are to encapsulate with the light junction of reference unit and are connected.
Relative to the beneficial effect of prior art be:
One, after adopting such structure, had both achieved original light splitting function, significantly simplify again its structure; Not only stop the adverse effect of environment, it also avoid the pollution of air; Except the stability greatly improving output intensity, also improve measuring accuracy and the greatest measurement of complete machine.
Its two, through use light power meter contrast test is carried out to the relative light intensity that light-dividing device exports, the light intensity of prior art has changed 0.2% in the period of 9h, and the utility model has only changed 0.02%, and light stability improves an order of magnitude.
Through actual measurement, when the base length of the utility model in sample space is 40m, effectively can distinguish visibility 20km and 21km.
Accompanying drawing explanation
Fig. 1 is a kind of basic structure schematic diagram of the present utility model.
Fig. 2 is the time dependent wave pattern of light intensity that prior art exports.
Fig. 3 is the time dependent wave pattern of light intensity that the utility model exports.
Embodiment
Below in conjunction with accompanying drawing, optimal way of the present utility model is described in further detail.
See Fig. 1, being constructed as follows of transmission-type visibility meter light-dividing device:
The light path of LED light source 1 is equipped with fiber splitter 2, the up optical interface of this fiber splitter 2 is connected with LED light source 1 light, two descending optical interfaces are connected with measurement mechanism 3 and reference unit 4 light respectively; Wherein, fiber splitter 2 is fused biconical taper fiber splitter (or slab guide fiber splitter), and LED light source 1 and the up optical interface of fiber splitter 2, the descending optical interface of fiber splitter 2 are to encapsulate with the light junction of reference unit 4 and are connected.
During use, the light sent when LED light source 1 is after fiber splitter 2, and one of two descending optical interfaces of a route fiber splitter 2 directive measurement mechanism 3, is estimated by it and visibility; Another road, through another descending optical interface directive reference unit 4 of fiber splitter 2, is monitored with the light intensity exported by reference unit 4 pairs of LED light sources 1, and the undulating quantity of light intensity is delivered to measurement mechanism 3, realizes estimation result---the correction of visibility.
Obviously, those skilled in the art can carry out various change and modification to transmission-type visibility meter light-dividing device of the present utility model and not depart from spirit and scope of the present utility model.Like this, if belong within the scope of the utility model claim and equivalent technologies thereof to these amendments of the present utility model and modification, then the utility model is also intended to comprise these change and modification.
Claims (3)
1. a transmission-type visibility meter light-dividing device, by the light-dividing device in LED light source (1) and its light path, and measurement mechanism (3) on light-dividing device output light path and reference unit (4) composition, it is characterized in that:
Described light-dividing device is fiber splitter (2);
The up optical interface of described fiber splitter (2) is connected with LED light source (1) light, two descending optical interfaces are connected with measurement mechanism (3) and reference unit (4) light respectively.
2. transmission-type visibility meter light-dividing device according to claim 1, is characterized in that fiber splitter (2) is for fused biconical taper fiber splitter, or slab guide fiber splitter.
3. transmission-type visibility meter light-dividing device according to claim 2, is characterized in that the descending optical interface of the up optical interface of LED light source (1) and fiber splitter (2), fiber splitter (2) is to encapsulate with the light junction of reference unit (4) and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251936.1U CN204594877U (en) | 2015-04-23 | 2015-04-23 | Transmission-type visibility meter light-dividing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251936.1U CN204594877U (en) | 2015-04-23 | 2015-04-23 | Transmission-type visibility meter light-dividing device |
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| CN204594877U true CN204594877U (en) | 2015-08-26 |
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| CN201520251936.1U Active CN204594877U (en) | 2015-04-23 | 2015-04-23 | Transmission-type visibility meter light-dividing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092538A (en) * | 2015-09-18 | 2015-11-25 | 安徽省大气探测技术保障中心 | White LED light source generation device of transmission type visibility meter |
| CN106442428A (en) * | 2016-11-11 | 2017-02-22 | 中国科学院合肥物质科学研究院 | Optical fiber type measurement method based on visibility of multiple times of reflection |
| CN109580623A (en) * | 2018-12-07 | 2019-04-05 | 丁向峰 | Mechanical meteorological optical range measuring instrument |
| CN109709078A (en) * | 2018-12-14 | 2019-05-03 | 中国科学院合肥物质科学研究院 | Transmission-type atmospheric visibility measuring device and method based on single-photon detecting survey technology |
-
2015
- 2015-04-23 CN CN201520251936.1U patent/CN204594877U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092538A (en) * | 2015-09-18 | 2015-11-25 | 安徽省大气探测技术保障中心 | White LED light source generation device of transmission type visibility meter |
| CN105092538B (en) * | 2015-09-18 | 2018-06-15 | 安徽省大气探测技术保障中心 | Transmission-type visibility meter White LED light source generating means |
| CN106442428A (en) * | 2016-11-11 | 2017-02-22 | 中国科学院合肥物质科学研究院 | Optical fiber type measurement method based on visibility of multiple times of reflection |
| CN109580623A (en) * | 2018-12-07 | 2019-04-05 | 丁向峰 | Mechanical meteorological optical range measuring instrument |
| CN109580623B (en) * | 2018-12-07 | 2021-06-18 | 深圳凯鸿欣电子科技有限公司 | Mechanical meteorological visibility measuring instrument |
| CN109709078A (en) * | 2018-12-14 | 2019-05-03 | 中国科学院合肥物质科学研究院 | Transmission-type atmospheric visibility measuring device and method based on single-photon detecting survey technology |
| CN109709078B (en) * | 2018-12-14 | 2021-07-06 | 中国科学院合肥物质科学研究院 | Transmission-type atmospheric visibility measuring device and method based on single photon detection technology |
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