CN1271855A - Device for measuring immersion factor of diffusor for underwater cosine light collector - Google Patents
Device for measuring immersion factor of diffusor for underwater cosine light collector Download PDFInfo
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- CN1271855A CN1271855A CN 99116158 CN99116158A CN1271855A CN 1271855 A CN1271855 A CN 1271855A CN 99116158 CN99116158 CN 99116158 CN 99116158 A CN99116158 A CN 99116158A CN 1271855 A CN1271855 A CN 1271855A
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- integrating sphere
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Abstract
一种水下余弦集光器漫射片浸没因子测量装置,本发明设计了一种带积分球的测量装置,把带积分球的水密外壳安装在一个可注装清水的箱体中,积分球可绕水平转动轴转动,积分球上装有分立多光谱通道,将待测的漫射片安装在进光窗口处,从而可以测量光辐射在不同入射角时的余弦集光器漫射片材料的浸没效应等光学性能。本发明还可以用与实际水下辐照度传感器同样的接收器替换积分球进行测量,具有技术先进性和灵活性。
An underwater cosine collector diffuser immersion factor measurement device, the invention designs a measurement device with an integrating sphere, the watertight casing with the integrating sphere is installed in a box that can be filled with clean water, and the integrating sphere It can rotate around the horizontal rotation axis. The integrating sphere is equipped with discrete multi-spectral channels. The diffuser to be tested is installed at the light entrance window, so that the material of the cosine collector diffuser can be measured when the light radiation is at different incident angles. Optical properties such as immersion effect. The present invention can also use the same receiver as the actual underwater irradiance sensor to replace the integrating sphere for measurement, which has technical advancement and flexibility.
Description
The invention belongs to the pick-up unit of marine optics surveying instrument.
Cosine light collector is a vitals of irradiance sensor.The cosine light collector of underwater irradiance sensor comprises waterproof glass and diffusion disk.Waterproof glass can bear the pressure that maximum sounds the depth of the water; Diffusion disk is attached to the outside of waterproof glass, directly contacts with water.The effect of cosine light collector is to make optical sensor meet the cosine rule to greatest extent to the response of different angle incident radiation.When measuring in the air, the inside and outside medium of cosine light collector is air.When measuring in the water, the cosine light collector external agency is a water, and interior media is an air.The refractive index of air approaches 1, and the refractive index of water is about 1.33, differs more than 30% with air.Therefore, cosine light collector diffusion transmissivity in water is called the submergence effect with aerial different, and its correction factor is called immersion factor.The submergence effect is mainly from diffusion disk.When practical application, the calibration of all irradiance sensors and calibration are all carried out in air, the irradiance sensor that in water body, uses, and in air after the calibration calibration, the in addition correction of immersion factor, the rational result that just can obtain in water, measuring.Tyler and Smith have described a kind of device (Tyler J.E., Smith R.C., 1970, Measurement of Spectral Irradiance Underwater, Gordon ﹠amp that measures underwater irradiance cosine light collector immersion factor; Breach SciencePublichers, New York, 103pp.).Used measurement mechanism is that the irradiance sensor that cosine light collector is installed is immersed in the casing that is marked with clear water, measure with a branch of parallel beam irradiation cosine light collector surface, then, the distance of change from the optical collector surface to the water surface, to draw the response when the water layer above the cosine light collector goes to zero, place it airborne response to compare with this irradiance sensor, its variation is thought because water logging there is not the surface of cosine light collector to cause, thereby is calculated the immersion factor of irradiance sensor.After this, Britain Macam company, Mueller and Austin continue to use the device of Tyler and Smith description basically, but improved the collimation of incident beam, and the switch that anhydrates has been installed in the bottom of water tank, the convenient water yield that reduces in the water tank, to change the distance (Mickleton of cosine light collector upper surface to the water surface, CoDurham, UK, 1995, Report on Immersion effect Calibration of NewcastleUniversity Macam Spectro-Radiometer, Macam spectroradiometer technical information; MuellerJ.L., Roswell W.A., 1995, Ocean Optics Protocols for SeaWiFS Validation, Revision 1, Nasa Technical Memorandum 104566, Vol.25, P24-25.).Above-mentioned several device all can only measuring vertical incident or at the immersion factor of vertical direction with certain subtended angle incident ray, and can only measure the group effect of cosine light collector, not the diffusion transmissivity of the used diffusion disk material of energy measurement in water.
The purpose of this invention is to provide a kind of measurement mechanism, can measure the diffusion transmissison characteristic of the used diffusion disk material of cosine light collector in water exactly, so that used diffusion disk performance is estimated and selected the light of different incident directions.Simultaneously also can measure underwater cosine light collector easily to the different incident direction light immersion factor of (comprising vertical incidence light).
The measurement mechanism of realizing the object of the invention adopts following technical pattern:
The casing that comprises an energy splendid attire clear water, the top of casing is provided with can send the light source that parallel beam shines the optical receiver in the casing, lower box is provided with draining valve, said optical receiver is an integrating sphere that the multispectral survey passage is housed, this integrating sphere is installed among the watertight case, the light portal of integrating sphere overlaps with the light inlet at the upper surface place that is located at watertight case, diffusion disk to be measured is contained in the light inlet place of watertight case, the watertight case of entire belt integrating sphere is installed on the horizontal rotating shaft that can drive its rotation, the center line of horizontal rotating shaft is positioned at the upper surface place of diffusion disk, and passes through on the vertical symmetry plane of integrating sphere.
Above-mentioned said horizontal rotating shaft comprises transmission shaft and coupling shaft, the center line of transmission shaft and coupling shaft is on same straight line, the watertight case of integrating sphere is installed between transmission shaft and the coupling shaft, the two ends of horizontal rotating shaft are installed on the sidewall of said casing, one end of transmission shaft extends to outside the casing, can make axle drive watertight case by handle mechanism and do 180 ° of rotations around horizontal direction.For reaching good measurement effect, need adjust the position of integrating sphere in watertight case, the vertical centre of integrating sphere is positioned on the center line of watertight case, so that its light portal overlaps with the light inlet of watertight case.Because the center line of horizontal rotating shaft is by the surface of diffusion disk and the vertical symmetry plane of integrating sphere, like this, when integrating sphere rotated, the upper surface of diffusion disk to be measured was all the time in the range of exposures of incident parallel beam.
For ease of the assembling and the debugging of installing relevant parts, supporting sleeve is equipped with on the watertight case both sides of integrating sphere, links to each other with coupling shaft with the transmission shaft of horizontal rotating shaft respectively, is demountable structure.
When carrying out surveying work, diffusion disk material to be measured is installed in the light portal place of integrating sphere, seal with O type circle, become the part of watertight case, the watertight case that integrating sphere is installed is immersed in the casing that clear water is housed, by handle horizontal rotating shaft is rotated, drive integrating sphere and rotate different angles, realize the incident that has a certain degree of parallel beam and diffusing surface.Make casing be full of water during beginning, the watertight case of integrating sphere is immersed in the water body as far as possible, and dried up face has a segment distance.When measuring, progressively water is released then, with the purpose that realizes that the diffusion disk upper surface can change to the distance of the water surface, and at different distance place turning handle, at different tilting position survey measurementss, to obtain useful measurement data.After the diffusion disk upper surface surfaces, before the diffusion disk drying and drying after respectively to the different angle survey measurements.
For detecting the situation of light field in the water body at any time exactly, optical sensor can also be installed in casing, two mutually perpendicular optical sensors generally are installed, and can be changed its horizontal level and the degree of depth.
For the guard box physical efficiency remains on horizontal level,, can level(l)ing mechanism be set in the bottom of casing so that horizontal rotating shaft is parallel with the water surface.
The present invention measures the fields of measurement that the transmissivity technology is incorporated into the underwater optics parts to the integrating sphere with pin-point accuracy more, can measure the transmission performance and the submergence effect of used diffusion disk more accurately.And having designed integrating sphere can be around the mechanism that transverse axis rotates, to measure the diffusion transmissivity and the immersion factor of different angle incident.Optics is received and the disconnectable structure of measurement component because the present invention has also designed, thereby utilize this measurement mechanism, both can load onto integrating sphere and carry out the diffusion disk performance test, also can the cosine light harvesting of the irradiance sensor of actual usefulness be detected.In a word, the present invention can significantly improve the precision of measuring used cosine light collector of underwater irradiance sensor and material property thereof, advanced technology, and diverse in function is used flexibly, is a kind of utility unit of novelty.
Below be drawing explanation of the present invention:
Fig. 1 is the structure cut-open view of this measurement mechanism;
Fig. 2 is that the B-B of Fig. 1 is to cut-open view;
Fig. 3 is the A portion amplification profile of Fig. 1;
Fig. 4 is the optics reception of this measurement mechanism and the structure cut-open view of measurement component.
Below with reference to the accompanying drawings the CONSTRUCTED SPECIFICATION of embodiment of the present invention is described in further detail:
As shown in Figure 1 and Figure 2, this measurement mechanism comprises the casing 25 that can annotate the dress clear water, the light source that can send parallel beam is equipped with on the top of casing, bottom half is provided with draining valve 26, can discharge the water in the casing 25 outside the case through this draining valve, the water level of casing is changed, be provided with scale 13 in the casing, with the situation of indicated water level variation.A horizontal rotating shaft that is made of transmission shaft 5 and coupling shaft 27 is arranged in casing, transmission shaft 5 and coupling shaft 27 are installed on the wall of casing, two supporting sleeves 40 with the watertight case 6 of integrating sphere link respectively, and with taper bolt 39 location, are the structure (as shown in Figure 4) of detachable replacement.The center line of transmission shaft 5 and coupling shaft 27 is on same straight line, is positioned at the upper surface of diffusion disk 46, and is parallel with surface level, and passes through the vertical symmetry plane of integrating sphere 32.One end of transmission shaft 5 extends outside casing 25 walls, by turning handle mechanism 4 transmission shaft 5 is rotated, and the angle of rotation shows that by index dial 24 its concrete structure is seen Fig. 3 (A of Fig. 1 is to amplification profile).Among the figure, the 22nd, the O type circle of motive seal prevents the outside seepage of water in the case, the 23rd, dial flange, the 19th, stripped nut, the 20th, flat key, the 21st, lock-screw is fixed on required rotational angle place to transmission shaft 5, so that measure.
The light source that sends parallel beam is a parallel light tube 11.Parallel light tube 11 is sleeved on the directional light base 9, and parallel light tube should be had good positioning, and when the watertight case of integrating sphere was horizontal, parallel beam can be full of the light inlet place of watertight case 6.Parallel light tube has the horizontal level of two set screw 10 fine-tuning parallel light tubes and is fixed.The inclination angle of set screw 12 adjustable leveling row light pipes makes parallel beam perpendicular to surface level.After the adjusting, be fixed on the erecting frame 7 with parallel light tube lock-screw 8.Distance between erecting frame 7 and the casing 25 is 3-50cm, and one side makes the cross section of parallel beam be full of the light inlet of the watertight case of integrating sphere, observes facula position during on the other hand for the adjustment parallel light tube and uses.
Three runners of casing 25 are pressed in respectively on three horizontal adjusting mechanisms 1, and each horizontal adjusting mechanism 1 is made up of two inclined-planes adjustment pieces, in order to adjust the surface level of casing 25.
Also have optical sensor 18 in casing, it is installed in the bent type watertight shell by two mutually perpendicular photovalves forms.The front of photovalve is a watertight glass, can receive the optical radiation of water body in the casing 25, in order to the spatial light field of monitoring water body.Optical sensor 18 can move up and down in water body by lifting rocking arm 14, pulley 15 and vertically-sliding guide 16, can move along the casing radial direction along moving horizontally bar 17 again.This cover monitoring water body light field system can assess the influence of water body light field to measurement result.
Mounting structure is as shown in Figure 4 in watertight case 6 for integrating sphere 32.Integrating sphere 32 shells are connected on the web joint 36 by sunk screw 34, and web joint 36 is fixed on the fixed head 38 by two register pins 35 and two screws 37, and fixed head 38 and pillar thereof then are welded on the inwall of watertight case side plate 28.There is a location depression lower end of integrating sphere vertical center line, during installation this depression is fixed on the rounded nose on setting nut 31 tops, the adjusting screw(rod) 30 of setting nut 31 is welded on the base plate 29 of watertight case 6, the vertical centre of integrating sphere 32 is accurately positioned on the center line of watertight case 6, and its light portal overlaps with the light inlet of watertight case 6.Then, adjust lateral adjustments nut 53 (having 3), integrating sphere 32 positioning and lockings.The adjusting screw(rod) 54 of lateral adjustments nut 53 is welded on the inwall of watertight case 6.
A plurality of lens barrel shape optical receivers 50 are housed on the wall of integrating sphere 32, and each optical receiver 50 is made up of the interference filter 52 and the photovalve 51 of different spectrum segments, is pressed in the lens barrel 50 with pressing plate 49.The electric signal congruence of each optical receiver gathers together, and guides to measuring equipment 58 places of casing outside by the watertight outlet opening 3 of watertight groove 56 and casing 25 through cable 55.57 sealings of watertight groove 56 usefulness fluid sealants.2 sealings of watertight outlet opening 3 usefulness fluid sealants.
The loam cake 44 of watertight case 6 links to each other with the ring flange 43 of watertight case 6 by screw 41, and has seal gasket 42 to realize watertight.There is boss 47 in the central authorities of loam cake 44, and the circular hole that to open a diameter be D forms light inlet, and the diameter of the size of D and diffusion disk to be measured 46 and incident parallel beam matches.Diffusion disk 46 is placed on the flange place of boss 47 inwalls, and threaded together lid 48 also passes through O type circle 45 and realizes water-stops.
When using this measurement mechanism to measure the immersion factor of diffusion disk, diffusion disk 46 to be measured is contained in the loam cake light inlet place of watertight case 6, water filling in casing then, can measure, when measuring, progressively water is released, with the distance of change diffusion disk upper surface to the water surface, and in different distance place turning handle mechanism 4, at different tilting position survey measurementss.
Because of be detachable structure of replacing between band watertight case 6 of integrating sphere 32 and the horizontal rotating shaft, also can unload watertight case 6 the whole series that have integrating sphere 32 from horizontal rotating shaft, change the device identical and measure with the irradiance sensor of reality use.
Claims (5)
1. underwater irradiance cosine light collector diffusion disk material property measurement mechanism, the casing (25) that comprises an energy splendid attire clear water, the top of casing is provided with can send the light source that parallel beam shines the optical receiver in the casing, lower box is provided with draining valve, it is characterized in that said optical receiver is an integrating sphere (32) that the multispectral survey passage is housed, this integrating sphere is installed among the watertight case (6), the light portal of integrating sphere overlaps with the light inlet at the upper surface place that is located at watertight case, diffusion disk to be measured (46) is contained in the light inlet place of watertight case, the watertight case of entire belt integrating sphere is installed on the horizontal rotating shaft that can drive its rotation, the center line of this horizontal rotating shaft is positioned at the upper surface place of diffusion disk, and passes through on the vertical symmetry plane of integrating sphere.
2. measurement mechanism according to claim 1, it is characterized in that said horizontal rotating shaft comprises transmission shaft (5) and coupling shaft (27), the center line of transmission shaft and coupling shaft is on same straight line, the watertight case of integrating sphere (6) is installed between transmission shaft and the coupling shaft, the two ends of horizontal rotating shaft are installed on the sidewall of said casing, one end of transmission shaft (5) extends to outside the casing, can make axle drive watertight case by handle mechanism (4) and do 180 ° of rotations around horizontal direction.
3. measurement mechanism according to claim 2 is characterized in that supporting sleeve (40) is equipped with on watertight case (6) both sides of said integrating sphere, links to each other with coupling shaft (27) with the transmission shaft (5) of horizontal rotating shaft respectively, is demountable structure.
4. measurement mechanism according to claim 1 is characterized in that being equipped with in the said casing (25) optical sensor (18) of the scalable degree of depth and horizontal range.
5. measurement mechanism according to claim 1 is characterized in that horizontal adjusting mechanism is equipped with in the bottom of said casing (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99116158 CN1121610C (en) | 1999-04-27 | 1999-04-27 | Device for measuring immersion factor of diffusor for underwater cosine light collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99116158 CN1121610C (en) | 1999-04-27 | 1999-04-27 | Device for measuring immersion factor of diffusor for underwater cosine light collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1271855A true CN1271855A (en) | 2000-11-01 |
| CN1121610C CN1121610C (en) | 2003-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99116158 Expired - Fee Related CN1121610C (en) | 1999-04-27 | 1999-04-27 | Device for measuring immersion factor of diffusor for underwater cosine light collector |
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| Country | Link |
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| CN (1) | CN1121610C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043994A (en) * | 2015-07-21 | 2015-11-11 | 青岛市光电工程技术研究院 | Non-contact water quality detecting device for surface water |
| CN114674429A (en) * | 2022-03-04 | 2022-06-28 | 同济大学 | Submerged factor measuring device for underwater photosynthetically active radiation sensor equipment |
| CN115824406A (en) * | 2022-10-20 | 2023-03-21 | 广州耀海科技有限公司 | Open-air spectral measurement equipment and coefficient calibration method |
| CN118243221A (en) * | 2024-05-20 | 2024-06-25 | 国家海洋技术中心 | Immersion factor measuring device and method of optical sensor |
| CN120521739A (en) * | 2025-07-24 | 2025-08-22 | 中国计量科学研究院 | Device for measuring underwater immersion coefficient and temperature response coefficient of spectral radiation sensor |
| CN121207327A (en) * | 2025-11-26 | 2025-12-26 | 复旦大学 | Measurement device for space spectrum irradiance consistency, data acquisition and determination method |
-
1999
- 1999-04-27 CN CN 99116158 patent/CN1121610C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043994A (en) * | 2015-07-21 | 2015-11-11 | 青岛市光电工程技术研究院 | Non-contact water quality detecting device for surface water |
| CN114674429A (en) * | 2022-03-04 | 2022-06-28 | 同济大学 | Submerged factor measuring device for underwater photosynthetically active radiation sensor equipment |
| CN115824406A (en) * | 2022-10-20 | 2023-03-21 | 广州耀海科技有限公司 | Open-air spectral measurement equipment and coefficient calibration method |
| CN115824406B (en) * | 2022-10-20 | 2023-12-15 | 广州耀海科技有限公司 | Outdoor spectrum measurement equipment and coefficient calibration method |
| CN118243221A (en) * | 2024-05-20 | 2024-06-25 | 国家海洋技术中心 | Immersion factor measuring device and method of optical sensor |
| CN118243221B (en) * | 2024-05-20 | 2024-08-09 | 国家海洋技术中心 | Immersion factor measuring device and method for optical sensor |
| CN120521739A (en) * | 2025-07-24 | 2025-08-22 | 中国计量科学研究院 | Device for measuring underwater immersion coefficient and temperature response coefficient of spectral radiation sensor |
| CN121207327A (en) * | 2025-11-26 | 2025-12-26 | 复旦大学 | Measurement device for space spectrum irradiance consistency, data acquisition and determination method |
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| Publication number | Publication date |
|---|---|
| CN1121610C (en) | 2003-09-17 |
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