CN210322789U - Photoelectric transparency meter - Google Patents
Photoelectric transparency meter Download PDFInfo
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- CN210322789U CN210322789U CN201921223597.0U CN201921223597U CN210322789U CN 210322789 U CN210322789 U CN 210322789U CN 201921223597 U CN201921223597 U CN 201921223597U CN 210322789 U CN210322789 U CN 210322789U
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- photoelectric conversion
- photoelectric
- transparency
- convex lens
- ccd array
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Abstract
The utility model belongs to the technical field of the ocean is surveyd, in particular to photoelectric transparency appearance. The device comprises a photoelectric conversion disc, a balance adjusting mechanism, a bottom weight and a supporting frame, wherein the lower end of the supporting frame is connected with the bottom weight, the upper end of the supporting frame is connected with a plurality of photoelectric conversion discs distributed along the circumferential direction, the plurality of photoelectric conversion discs surround the outer side of the balance adjusting mechanism and are all connected with the balance adjusting mechanism, and the photoelectric conversion discs are used for measuring the downward radiation brightness of an underwater light field and recording the measurement time. The utility model discloses gather light field signal intensity under water and change thereof, can keep away background light change and the influence of people's eye difference to water transparency measurement, obtain more accurate water transparency data, can effectively keep away instrument mooring rope shadow and equipment slope influence problem.
Description
Technical Field
The utility model belongs to the technical field of the ocean is surveyd, in particular to photoelectric transparency appearance.
Background
The water transparency is an important measurement parameter aiming at the aspects of water area primary productivity evaluation, water quality, ocean optical remote sensing calibration and the like. The transparency of the water body represents the depth of natural light penetrating through the water body, so that the photosynthesis of underwater plants is influenced, and the living environment of animals and plants in the water area is determined.
At present, a low-cost transparent circle is put into a water body until human eyes can just recognize the depth of the transparent circle, so that the transparency value of the water body is estimated, and the measurement mode generates uncertainty due to the difference between the human eyes and natural light intensity. Therefore, the calibrated photoelectric conversion device is used for replacing human eyes, and the transparency value of the water body can be obtained quantitatively. However, the transparent circle which is placed under water is observed by human eyes, so that the characteristic of fuzzy recognition is achieved, the problems that the transparent circle is influenced by the shadow of the mooring rope of the transparent circle and the inclination of the transparent circle do not exist when the human eyes observe the transparent circle, and the existing photoelectric detection equipment cannot accurately measure the transparency of the water body due to the shadow caused by the rotation of the mooring rope and the inclination of the equipment in the process of measuring the radiant quantity of an underwater light field when the equipment is placed under the water. Therefore, there is a need for a photodetecting device that can avoid the influence of the shadow of the mooring rope or the variation of the light-passing cross-sectional area.
SUMMERY OF THE UTILITY MODEL
To current transparent circle measure unsafe problem, the utility model aims to provide a photoelectric transparency appearance can accurately obtain water transparency, solves current photoelectric detection equipment and causes the unsafe problem of water transparency measurement because of the rotatory slope that causes shadow and equipment of mooring cable.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a photoelectric transparency instrument comprises a photoelectric conversion disk, a balance adjusting mechanism, a bottom weight and a support frame, wherein the lower end of the support frame is connected with the bottom weight, the upper end of the support frame is connected with a plurality of photoelectric conversion disks distributed along the circumferential direction, the plurality of photoelectric conversion disks surround the outer side of the balance adjusting mechanism and are all connected with the balance adjusting mechanism, and the photoelectric conversion disks are used for measuring the downward radiation brightness of an underwater optical field and recording the measurement time.
The photoelectric conversion disc comprises a sealing shell, a power supply and control circuit, an aspheric convex lens, a CCD array, a pressure sensor and a data acquisition circuit, wherein the power supply and control circuit, the CCD array, the pressure sensor and the data acquisition circuit are arranged in the sealing shell, the CCD array is arranged above the power supply and control circuit, the data acquisition circuit and the pressure sensor, the aspheric convex lens is arranged above the sealing shell, the downward radiant quantity of an underwater light field is converted into an electric signal on the CCD array after passing through the aspheric convex lens, the data acquisition circuit acquires the electric signal and also acquires the water depth value output by the pressure sensor, and the power supply and control circuit is used for recording sampling time, depth and downward radiation brightness intensity.
The material density of the aspheric convex lens is greater than that of a conventional water body, so that the process of refracting the light thinning medium into the light dense medium is realized, and diffusely scattered photons transmitted downwards or upwards in the water body are not parallel to the paraboloid of the aspheric convex lens in any direction.
The photosensitive surface of the CCD array is smaller than the plane part of the aspheric convex lens.
The time response frequency of the CCD array and the pressure sensor and the acquisition frequency of the data acquisition circuit are both larger than 1 Hz.
The balance adjusting mechanism comprises balancing weights, balance adjusting supporting rods and fixing columns, wherein the fixing columns are respectively connected with the photoelectric conversion discs through the balance adjusting supporting rods, the balancing weights are connected to the balance adjusting supporting rods in a threaded mode, and the balance degree of the photoelectric conversion discs is adjusted by adjusting the positions of the balancing weights.
And an attitude sensor for recording attitude information and corresponding time of the photoelectric conversion disk is arranged in the fixed column.
The support frame includes main tributary vaulting pole and a plurality of side branch, wherein the lower extreme of main tributary vaulting pole with the end is weighed down and is connected, and the upper end is equipped with O type ring, and a plurality of side branch are the emission form and are connected with O type ring, and is a plurality of the photoelectric conversion dish sets up respectively in the tip of a plurality of side branch.
The main support rod is connected with a water sail.
The number of the photoelectric conversion discs is three or more.
The utility model has the following beneficial effects and advantages:
1. through the utility model discloses a photoelectric transparency appearance gathers light field signal strength under water and changes thereof, can avoid background light change and the influence of people's eye difference to water transparency measurement, obtains more accurate water transparency data, compares with current transparency measuring instrument, can effectively avoid instrument mooring cable shadow and equipment slope influence problem.
2. The utility model discloses an integrated attitude sensor on the central fixed column of photoelectric transparency appearance can realize rectifying vertical logical light cross-section. The photoelectric conversion disks in the photoelectric transparency instrument are all installed by adopting the supporting rods to be in rigid connection, so that the postures of the central fixing column are the postures of the photoelectric conversion disks in the using process, the postures of the photoelectric transparency instrument are synchronously recorded in the using process, and the calculation of the effective light passing section can be carried out.
3. The utility model discloses a synchronous measurement of three or three above photoelectric conversion dish can realize the mutual calibration between different mounted position department photoelectric conversion dish. In the process of lowering the equipment, the mooring cable rotates to cause the shadow of the mooring cable to change on different photoelectric conversion disks, three or more photoelectric conversion disks are adopted for synchronous measurement, and the radiation quantity variation difference at the relative position can be utilized to calibrate the radiation quantity measurement deviation caused by the shadow.
4. The utility model relates to an optical window of photoelectric conversion dish all adopts aspheric surface convex lens, can realize the effective receipt of diffuse scattering light under water. Because the water body is a natural optical scatterer, the skylight can generate multiple scattering after entering the water body, and the aspheric convex lens can avoid the influence of critical incidence effect.
5. The utility model discloses a photoelectric transparency appearance has the high and anti background environment of measurement accuracy and disturbs the advantage, is particularly useful for the measuring condition that background natural light changes.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural diagram of the photoelectric conversion panel of the present invention.
In the figure: the device comprises a non-spherical convex lens 1, a CCD array 2, a pressure sensor 3, a data acquisition circuit 4, a power supply and control circuit 5, a sealing shell 6, a photoelectric conversion disc 7, a balancing weight 8, a balance adjusting supporting rod 9, a fixing column 10, an O-shaped ring 11, a water sail 12, a bottom weight 13, a side supporting rod 14 and a main supporting rod 15.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides a pair of photoelectric transparency appearance, including photoelectric conversion dish 7, balanced guiding mechanism, end weight 13 and support frame, wherein the lower extreme and the end weight 13 of support frame are connected, and the upper end is connected with a plurality of photoelectric conversion dish 7 along circumference distribution, and a plurality of photoelectric conversion dish 7 encircle in balanced guiding mechanism's the outside, and all are connected with balanced guiding mechanism, and photoelectric conversion dish 7 is used for measuring the downward radiance luminance and the record measuring time in light field under water.
The support frame includes main tributary vaulting pole 15 and a plurality of side branch 14, and wherein the lower extreme and the end of main tributary vaulting pole 15 are connected 13, and the upper end is equipped with O ring 11, and a plurality of side branch 14 are the emission form and are connected with O ring 11, and a plurality of photoelectric conversion dish 7 set up respectively in the tip of a plurality of side branch 14. The main supporting rod 15 is connected with a water sail 12.
The number of the photoelectric conversion discs 7 is three or more, and in the embodiment of the present invention, the number of the photoelectric conversion discs 7 is three.
As shown in fig. 2, the balance adjustment mechanism includes a balancing weight 8, a balance adjustment support rod 9 and a fixing column 10, wherein the fixing column 10 is connected to the plurality of photoelectric conversion panels 7 through the plurality of balance adjustment support rods 9, each balance adjustment support rod 9 is connected to a balancing weight 8 through a screw thread, and the balance adjustment of the photoelectric conversion panels 7 is realized by adjusting the position of the balancing weight 8.
Further, an attitude sensor for recording attitude information of the photoelectric conversion disk 7 and corresponding time is provided in the fixed column 10.
As shown in fig. 3, the photoelectric conversion panel 7 includes a sealed housing 6, a power supply and control circuit 5, an aspheric convex lens 1, a CCD array 2, a pressure sensor 3, and a data acquisition circuit 4, wherein the power supply and control circuit 5, the CCD array 2, the pressure sensor 3, and the data acquisition circuit 4 are disposed in the sealed housing 6, the CCD array 2 is disposed above the power supply and control circuit 5, the data acquisition circuit 4, and the pressure sensor 3, and the aspheric convex lens 1 is disposed above the sealed housing 6. The downward radiation amount of the underwater light field is converted into an electric signal on the CCD array 2 after passing through the aspheric convex lens 1, the data acquisition circuit 4 acquires the electric signal and also acquires the water depth value output by the pressure sensor 3, and the power supply and control circuit 5 is used for recording the sampling time, the depth and the downward radiation brightness intensity.
The time response frequency of the CCD array 2 and the pressure sensor 3 and the acquisition frequency of the data acquisition circuit 4 are both larger than 1 Hz.
The balance adjusting supporting rods 9 and the fixing columns 10 are made of anticorrosive materials, the balance adjusting supporting rods 9 are equal in length and angle intervals after installation, and the mooring ropes are tied to the fixing columns 10 for measurement of the photoelectric transparency instrument. The fixed column 10 is packaged in a seawater-proof manner, and by presetting, when the photoelectric transparency meter is used, the attitude sensor in the photoelectric transparency meter records the attitude information and the corresponding time, and the measured attitude information can be directly read by a computer.
The embodiment of the utility model provides an in, balancing weight 8 all adopts the screw thread precision of 6H level with balance adjustment branch 9 to be equipped with the jackscrew on the balancing weight 8, so that the relative position of fixed pouring weight 8 on balance adjustment branch 9. After the photoelectric conversion discs 7, the balance adjusting support rod 9, the fixing column 10 and the O-ring 11 are installed, the position of the weight 8 is adjusted, and all the photoelectric conversion discs 7 are located on the same horizontal plane as far as possible by matching with measurement comparison of the attitude sensor in the fixing column 10.
Sampling time and interval of the attitude sensors in the photoelectric conversion disc 7 and the fixed column 10 are consistent, downward radiation of an underwater light field is converted into an electric signal on the CCD array 2 after passing through the aspheric convex lens 1, the data acquisition circuit 4 acquires the electric signal and also acquires a water depth value output by the pressure sensor 3, and finally, the sampling time, the depth and the downward radiation brightness intensity are recorded in the power supply and control circuit 5.
The material density of aspheric convex lens 1 is greater than conventional water density, realizes the process that light sparse medium refracts and gets into the optically dense medium to can make the diffuse scattering photon of downward or upward transmission in the water all be not parallel to the paraboloid of aspheric convex lens 1 on arbitrary direction, its face type should satisfy:
wherein e is the eccentricity, αiAnd x is a high-order non-curved surface coefficient, x is a radial coordinate, and rho is the curvature of the curved surface vertex of the lens.
The photosensitive surface of the CCD array 2 is smaller than the plane part of the aspheric convex lens 1, so that the light energy refracted by the aspheric convex lens 1 covers the CCD, and the CCD idle pixel can not appear. The time response frequency of the CCD array 2 and the pressure sensor 3 and the acquisition frequency of the data acquisition circuit 4 are both larger than 1 Hz.
When the downward radiance measurement of the underwater light field is carried out, the number of the photoelectric conversion discs 7 is three or more, and the influence of the existence of shadows of the mooring cable on the photoelectric conversion discs 7 is eliminated through the radiance numerical value comparison and correction. The clock calibration and the working time of all the photoelectric conversion disks 7 are set to be consistent through the power supply and control circuit 5. Before use, the photoelectric conversion disk 7 performs unified calibration and calibration on conversion of light intensity on a natural light spectrum, and for the same light field, the radiance measured by the photoelectric conversion disk 7 is consistent.
In the embodiment, the photoelectric transparency meter is used for measuring the signal intensity and the change of the underwater optical field, so that the influence of the change of background light and the difference of human eyes on the measurement of the transparency of the water body can be avoided, and the more accurate calculation of the water body transparency data can be obtained. The mutual calibration of the photoelectric conversion disks at different installation positions can be realized by synchronous measurement of three or more photoelectric conversion disks. In the process of lowering the equipment, the mooring cable rotates to cause the shadow of the mooring cable to change on different photoelectric conversion discs 7, three or more photoelectric conversion discs 7 are adopted for synchronous measurement, and the radiation quantity measurement deviation caused by the shadow can be calibrated by using the change difference of the radiation quantity at the relative position. Compared with the existing transparency measuring instrument, the method can effectively avoid the influence of the shadow of the mooring cable of the instrument and the inclination of the instrument. The photoelectric conversion disks in the photoelectric transparency instrument are all installed by adopting the supporting rods to be in rigid connection, so that the postures of the central fixing column are the postures of the photoelectric conversion disks in the using process, the postures of the photoelectric transparency instrument are synchronously recorded in the using process, the calculation of an effective light passing section can be carried out, and the accuracy of water transparency measurement is improved.
The utility model provides a photoelectric transparency appearance, the shadow influence of instrument slope and mooring rope when avoiding using photoelectric transparency appearance receives wide angle light signal through aspheric surface convex lens, realizes photoelectric conversion through the CCD array, and pressure sensor's measurement accuracy is higher than 0.1 meter. The utility model discloses utilize CCD light sensing element to change light field signal under water, obtain the change of radiance along with the degree of depth in the light field under water to through the mutual correction of three or three above photoelectric conversion dish, realize that water transparency calculates, improved water transparency measuring accuracy.
The utility model discloses a photoelectric transparency appearance possesses measurement of efficiency height, anti experiment environment interference, ensures advantages such as measurement accuracy to solve the water transparency measuring uncertainty problem.
The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.
Claims (10)
1. The photoelectric transparency instrument is characterized by comprising a photoelectric conversion disk (7), a balance adjusting mechanism, a bottom weight (13) and a support frame, wherein the lower end of the support frame is connected with the bottom weight (13), the upper end of the support frame is connected with a plurality of photoelectric conversion disks (7) distributed along the circumferential direction, the plurality of photoelectric conversion disks (7) surround the outer side of the balance adjusting mechanism and are all connected with the balance adjusting mechanism, and the photoelectric conversion disks (7) are used for measuring the downward radiation brightness of an underwater light field and recording the measurement time.
2. The photoelectric transparency instrument according to claim 1, wherein the photoelectric conversion disc (7) comprises a sealed housing (6), a power supply and control circuit (5), an aspheric convex lens (1), a CCD array (2), a pressure sensor (3) and a data acquisition circuit (4), wherein the power supply and control circuit (5), the CCD array (2), the pressure sensor (3) and the data acquisition circuit (4) are arranged in the sealed housing (6), the CCD array (2) is arranged above the power supply and control circuit (5), the data acquisition circuit (4) and the pressure sensor (3), the aspheric convex lens (1) is arranged above the sealed housing (6), the downward radiation of the underwater optical field is converted into an electrical signal by the aspheric convex lens (1) on the CCD array (2), and the data acquisition circuit (4) acquires the electrical signal at the same time, and the water depth value output by the pressure sensor (3) is also acquired, and the power supply and control circuit (5) is used for recording the sampling time, the depth and the downward radiation intensity.
3. The photoelectric transparency instrument according to claim 2, wherein the material density of the aspheric convex lens (1) is greater than that of a conventional water body, so that the process of refracting the light thinning medium into the light tight medium is realized, and diffusely scattered photons transmitted downwards or upwards in the water body can not be parallel to the paraboloid of the aspheric convex lens (1) in any direction.
4. The electro-optical transparency according to claim 2, characterized in that the photosensitive surface of the CCD array (2) is smaller than the planar part of the aspherical convex lens (1).
5. The electro-optical transparency meter according to claim 2, characterized in that the time response frequency of the CCD array (2) and the pressure sensor (3) and the acquisition frequency of the data acquisition circuit (4) are both greater than 1 Hz.
6. The photoelectric transparency instrument according to claim 1, wherein the balance adjustment mechanism comprises a weight block (8), a balance adjustment strut (9) and a fixing column (10), wherein the fixing column (10) is respectively connected with the plurality of photoelectric conversion discs (7) through the plurality of balance adjustment struts (9), each balance adjustment strut (9) is in threaded connection with a weight block (8), and the balance adjustment of the photoelectric conversion discs (7) is realized by adjusting the position of the weight block (8).
7. The photoelectric transparency instrument according to claim 6, characterized in that the fixed column (10) is provided with a posture sensor for recording the posture information of the photoelectric conversion disk (7) and the corresponding time.
8. The photoelectric transparency instrument according to claim 1, wherein the supporting frame comprises a main supporting rod (15) and a plurality of side supporting rods (14), wherein the lower end of the main supporting rod (15) is connected with the bottom drop (13), the upper end of the main supporting rod is provided with an O-ring (11), the plurality of side supporting rods (14) are connected with the O-ring (11) in an emitting shape, and the plurality of photoelectric conversion discs (7) are respectively arranged at the ends of the plurality of side supporting rods (14).
9. The electro-optical transparency meter according to claim 8, characterized in that a water sail (12) is connected to the main support rod (15).
10. The photoelectric transparency meter according to any one of claims 1 to 9, characterized in that the number of the photoelectric conversion disks (7) is three or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921223597.0U CN210322789U (en) | 2019-07-31 | 2019-07-31 | Photoelectric transparency meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921223597.0U CN210322789U (en) | 2019-07-31 | 2019-07-31 | Photoelectric transparency meter |
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| Publication Number | Publication Date |
|---|---|
| CN210322789U true CN210322789U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921223597.0U Expired - Fee Related CN210322789U (en) | 2019-07-31 | 2019-07-31 | Photoelectric transparency meter |
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| CN (1) | CN210322789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274894A (en) * | 2019-07-31 | 2019-09-24 | 中国科学院海洋研究所 | A kind of photoelectricity transparency meter |
-
2019
- 2019-07-31 CN CN201921223597.0U patent/CN210322789U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274894A (en) * | 2019-07-31 | 2019-09-24 | 中国科学院海洋研究所 | A kind of photoelectricity transparency meter |
| CN110274894B (en) * | 2019-07-31 | 2024-01-30 | 中国科学院海洋研究所 | Photoelectric transparency instrument |
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Granted publication date: 20200414 Termination date: 20210731 |