A portable water quality transparency monitoring device and use method

Abstract

The present invention discloses a portable water quality transparency monitoring device and a method of use, including an ambient light simulation sleeve and a measuring tube. The cylindrical reflector of the ambient light simulation sleeve selects different reflectivities according to the visual turbidity of the water body; the measuring tube includes a barrel-shaped shell with an upper opening and a cover plate for sealing the upper opening, the barrel-shaped shell is coaxially inserted into the interior of the ambient light simulation sleeve, and a light source, a video acquisition camera, a screw and a first drive motor are arranged on the cover plate, and the Secchi disk is driven to reciprocate in a vertical direction by the forward or reverse rotation of the screw. The present invention provides a stable lighting environment by the light source, so that the water quality transparency monitoring can be unaffected by the lighting conditions; the measuring tube constitutes a closed detection environment, which is not affected by factors such as wind and waves, flow velocity and water buoyancy, and the detection is less disturbed by the outside world; the Secchi disk is driven to slide by the screw and the first drive motor, which improves the automation of the measurement process and reduces the difficulty of operation.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a portable water quality transparency monitoring device and a use method thereof. Background Art

[0002] In municipal engineering construction, it is necessary to measure the water quality in the river. Transparency indicates the degree of light penetration into the water. It is a measure of the visibility of the water body. It is the most intuitive indicator of the water environment quality and water quality. It is an important indicator for measuring aquaculture water.

[0003] Water is colorless and transparent. When the water contains sediment, microorganisms, suspended solids, organic matter and other substances, it will become turbid and the transparency of the water will decrease. The decrease in water transparency not only affects the sensory properties, but also affects the life of aquatic organisms. Therefore, the transparency of water is also an indicator of water quality. When testing the transparency of water quality, the Secchi disk is usually sunk to a depth that is just not visible, so as to calibrate the maximum transparency of the water quality.

[0004] For example, Chinese patent CN203259475U discloses an improved reservoir transparency measuring plate, which includes a black and white plate, a sinker, an iron half ring and a winding plate. The sinker is welded to the center of the back of the black and white plate, the iron half ring is welded to the front of the black and white plate, one end of the sampling rope is connected to the iron half ring welded on the black and white plate by means of a safety buckle, there is a hole on the winding plate, and the other end of the sampling rope is tied to the hole of the winding plate.

[0005] However, existing devices such as the above-mentioned transparency measuring instrument are affected by factors such as wind and waves, flow velocity and water buoyancy. The Secchi disk will drift when used for underwater measurement. The disk, measuring rope or measuring tape will tilt and cannot keep the Secchi disk horizontal, causing reading errors and affecting measurement accuracy. In addition, the transparency index only supports on-site measurement, and the measurement time is long, which takes a lot of time and needs to be improved. Summary of the invention

[0006] The embodiment of the present invention provides a portable water quality transparency monitoring device and a method of use, which are used to overcome the technical problem that the water quality transparency monitoring device is easily affected by factors such as wind and waves, flow velocity and water buoyancy, broaden the applicable working conditions of the device, reduce the detection effect to external interference, and ensure accurate and reliable detection results.

[0007] In order to achieve the above-mentioned invention object, the present invention provides a portable water quality transparency monitoring device, comprising an ambient light simulating sleeve and a measuring sleeve, the ambient light simulating sleeve comprising a cylindrical shell and an annular cover, the cylindrical shell comprising a cylindrical inner side wall, a cylindrical outer side wall and an annular bottom plate, the cylindrical inner side wall, the cylindrical outer side wall and the annular bottom plate enclose a sandwich cavity with only an upper end opening, the cylindrical inner side wall is a transparent side wall made of a transparent material, the cylindrical outer side wall is an opaque side wall made of an opaque shading material, a cylindrical reflector is arranged in the sandwich cavity, the cylindrical reflector selects different reflectivities according to the visual turbidity of the water body, when the water body is turbid, the inner surface of the cylindrical reflector is a rough reflective surface, when the water body is clear, the inner surface of the cylindrical reflector is a smooth reflective surface, through different reflection modes, the diffuse reflection relationship between different water bodies is further simulated, the annular cover is installed on the upper part of the cylindrical shell and seals the upper end opening of the sandwich cavity;

[0008] The measuring cylinder comprises a barrel-shaped shell with an upper opening and a cover plate for sealing the upper opening. The barrel-shaped shell is a transparent barrel-shaped shell made of a transparent material. The outer diameter of the barrel-shaped shell matches the inner diameter of the cylindrical inner wall of the barrel-shaped shell. The barrel-shaped shell is coaxially inserted into the interior of the simulated ambient light sleeve. The inner edge of the annular bottom plate exceeds the cylindrical inner wall, so that the inner edge of the annular bottom plate exceeds the cylindrical inner wall to form a support portion for the barrel-shaped shell. The barrel-shaped shell and the cover plate form an inner cavity for containing water samples. A first pipe connected to the inner cavity is arranged on the bottom surface of the barrel-shaped shell. The first pipe is connected to a water inlet pump. The water inlet pump is fixedly arranged at the lower part of the barrel-shaped shell. The water inlet pump is used to pump external water into the inner cavity. A second pipe connected to the inner cavity is arranged on the cover plate. An electromagnetic valve is arranged on the second pipe.

[0009] The cover plate is also provided with a light source, a video acquisition camera, a screw and a first drive motor. The light source emits a light beam downward to form natural daylight conditions in the inner cavity. A Secchi disk is provided in the barrel-shaped shell. Two slide rails extending in the vertical direction are symmetrically provided on the inner wall of the barrel-shaped shell. The two sides of the Secchi disk are correspondingly slidably installed on the slide rails, and the Secchi disk is guided by the slide rails to slide in the vertical direction. The screw extends in the vertical direction and is rotatably installed on the cover plate, and the upper end of the screw is connected to the motor shaft of the first drive motor for transmission. The screw is driven to rotate by the first drive motor. A threaded hole matching the screw is provided on the Secchi disk, and the Secchi disk is mounted on the screw through the threaded hole, so that the Secchi disk is driven to reciprocate in the vertical direction by the forward or reverse rotation of the screw. The video acquisition camera is used to photograph the Secchi disk from the cover plate.

[0010] An axle seat for mounting the lower end of the screw is arranged on the inner bottom surface of the barrel-shaped shell, and the lower end of the screw is rotatably mounted in the axle seat.

[0011] Preferably, there is a gap between the Secchi disk and the barrel-shaped shell for water to flow through.

[0012] Preferably, the light source, water inlet pump, solenoid valve, first drive motor and video acquisition camera are all connected to the communication control device via waterproof cables.

[0013] Preferably, the exterior of the cylindrical shell is fixedly provided with a connecting sleeve, which is connected to a steel cable via a connecting frame, so that the water quality transparency monitoring device is driven by the steel cable to move upward or downward inside the water body.

[0014] Preferably, the light source, the video acquisition camera and the first driving motor all have a water-proof sealing structure.

[0015] Preferably, the outer edge of the Secchi disk is radially arranged with a plurality of annular high-temperature coloring areas in sequence, each of which is coated with a high-temperature coloring paint that is transparent at low temperatures and appears black at high temperatures, and a heating device for heating the high-temperature coloring area is provided on the bottom surface of each high-temperature coloring area. By starting each heating device in sequence from the outside to the inside, each high-temperature coloring area can be displayed in black as required, which can reduce the effective area of ​​the Secchi disk, so that the area of ​​the Secchi disk can change dynamically according to the water depth, and can match the perspective relationship between the disk and the human eye in the national standard monitoring method. The problem of the proportion of the disk's viewing angle at different water depths. Therefore, by adjusting the light intensity of the light source and the effective area of ​​the Secchi disk, a greater water depth can be simulated within a limited length, so that the length of the monitoring device can be lower than the transparency distance, and it supports portability.

[0016] The method for using the portable water quality transparency monitoring device comprises the following steps:

[0017] S1. After installing the equipment, turn on the device in a waterless state and verify the reflection loss of the reflective surface of the Secchi disk under waterless conditions. Record the incident light intensity C0 under 100% incident light intensity conditions, then read the reflected light intensity to obtain the outgoing light intensity D0, and calculate the reflection loss ratio:

[0018] Reflection loss A = incident light intensity C0 - outgoing light intensity D0.

[0019] S2. Put water into the device. At this time, the incident light intensity C1 is equal to the incident light intensity C0, and the preliminary reading begins.

[0020] Outgoing light intensity D1 = incident light intensity C1 - water absorption light intensity B1 *2 - reflection loss A

[0021] Select the light intensity on the white board and the black board reflected on the Secchi disk: white board light intensity E11 and black board light intensity E12. When the difference between the two is less than 5%, it is determined that the transparency monitoring requirement is met. Move the Secchi disk upward until the difference between the two is less than 5%, record the distance L1 between the board and the lens, and the transparency is L1.

[0022] S3. If the value does not reach less than 5%, adjust the incident light intensity to avoid repeated calculation of reflection loss.

[0023] At this time, the incident light intensity C2 is equal to the outgoing light intensity D1 + reflection loss A

[0024] Select the light intensity on the reflective white board and the reflective black block, that is, the white board light intensity E21 and the black board light intensity E22. When the difference between the two is less than 5%, it is determined that the transparency monitoring requirement is met. Move the Secchi disk upward until the difference between the two is less than 5%, and record the distance L2 between the board and the lens. The transparency is the device optical path L0+L2.

[0025] S4. If the difference between the whiteboard and blackboard light intensities is not less than 5%, repeat the above step S3 to adjust the incident light intensity until the difference between the light intensity reflected on the whiteboard and the light intensity reflected on the black block, i.e., the light intensity En1 of the whiteboard and the light intensity En2 of the blackboard, is less than 5%. Move the Secchi disk upward until the difference between the light intensity En1 of the whiteboard and the light intensity En2 of the blackboard is less than 5%, record the distance Ln between the board and the lens, and the final transparency is the optical path L0*(n-1)+Ln of the device.

[0026] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0027] The present invention provides a stable lighting environment by means of a light source, so that water quality transparency monitoring can be unaffected by lighting conditions, thereby broadening the application scope of the water quality transparency monitoring device, and the detection result is accurate and reliable.

[0028] The measuring tube constitutes a closed detection environment, which is not affected by factors such as wind and waves, flow velocity and water buoyancy. The detection is less affected by external interference, which also improves the accuracy and reliability of the test results.

[0029] The Secchi disk is driven to slide by the screw rod and the first driving motor, which has a high degree of automation, improves the automation degree of the measuring process, and reduces the difficulty of operation.

[0030] The device has a compact structure, is easy to disassemble and clean, and is highly portable, so it can be carried to traditional measurement sites for on-site mobile measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the ambient light imitating sleeve of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the measuring tube of the present invention;

[0034] Figure 4 It is a schematic diagram of the installation structure of the Secchi disk of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the present invention in which the measuring cylinder is filled with water and then tested;

[0036] Figure 6 The figure is a schematic diagram of the process of using the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] like Figure 1 As shown, the embodiment of the present invention provides a portable water quality transparency monitoring device, including an ambient light simulating sleeve and a measuring tube, combined with Figure 2 As shown, the ambient light simulation sleeve includes a cylindrical shell 1 and an annular cover 2, the cylindrical shell 1 includes a cylindrical inner side wall, a cylindrical outer side wall and an annular bottom plate, the cylindrical inner side wall, the cylindrical outer side wall and the annular bottom plate form an interlayer cavity with only an upper end opening, the cylindrical inner side wall is a transparent side wall made of a transparent material, the cylindrical outer side wall is an opaque side wall made of an opaque shading material, a cylindrical reflector 3 is arranged in the interlayer cavity, the cylindrical reflector 3 selects different reflectivities according to the visual turbidity of the water body, when the water body is turbid, the inner surface of the cylindrical reflector 3 is a rough reflective surface, when the water body is clear, the inner surface of the cylindrical reflector 3 is a smooth reflective surface, and the diffuse reflection relationship between different water bodies is further simulated by different reflection modes, the annular cover 2 is installed on the upper part of the cylindrical shell 1 and seals the upper end opening of the interlayer cavity;

[0039] Combination Figure 3As shown, the measuring cylinder comprises a barrel-shaped shell 5 with an upper opening and a cover plate 6 covering the upper opening, the barrel-shaped shell 5 is a transparent barrel-shaped shell 5 made of a transparent material, the outer diameter of the barrel-shaped shell 5 matches the inner diameter of the cylindrical inner wall of the barrel-shaped shell 1, the barrel-shaped shell 5 is coaxially inserted into the interior of the simulated ambient light sleeve, the inner edge of the annular bottom plate exceeds the cylindrical inner wall, so that the inner edge of the annular bottom plate exceeds the cylindrical inner wall to form a support portion 7 for the barrel-shaped shell 5, the barrel-shaped shell 5 and the cover plate 6 surround an inner cavity 8 for containing water samples, a first pipe 9 connected to the inner cavity 8 is arranged on the bottom surface of the barrel-shaped shell 5, the first pipe 9 is connected to a water inlet pump 10, the water inlet pump 10 is fixedly arranged at the lower part of the barrel-shaped shell, the water inlet pump 10 is used to pump external water into the inner cavity 8, a second pipe 11 connected to the inner cavity 8 is arranged on the cover plate 6, and a solenoid valve 12 is arranged on the second pipe 11,

[0040] The cover plate 6 is also provided with a light source 4, a video acquisition camera 13, a screw 14 and a first drive motor 15. The light source 4 emits a light beam downward to form a natural daylight condition in the inner cavity 8. A Secchi disk 16 is provided in the barrel-shaped shell 5. Two slide rails 17 extending in a vertical direction are symmetrically provided on the inner wall of the barrel-shaped shell 5. Figure 4 As shown, the two sides of the Secchi disk 16 are correspondingly slidably installed on the slide rails 17, and the slide rails 17 guide the Secchi disk 16 to slide in the vertical direction. The screw 14 extends in the vertical direction and is rotatably installed on the cover plate 6, and the upper end of the screw 14 is connected to the motor shaft of the first drive motor 15 for transmission, and the screw 14 is driven to rotate by the first drive motor 15. The Secchi disk 16 is provided with a threaded hole 18 that matches the screw 14. The Secchi disk 16 is mounted on the screw 14 through the threaded hole 18, so that the Secchi disk 16 is driven to reciprocate in the vertical direction by the forward rotation or reverse rotation of the screw 14. The video acquisition camera 13 is used to shoot the Secchi disk 16 from the cover plate 6.

[0041] During operation, the method of putting water into the device is to open the solenoid valve 12, start the water inlet pump 10, and fill the water of the depth into the inner cavity 8 of the measuring cylinder. When the inner cavity 8 is full of water, the water inlet pump 10 stops working.

[0042] An axle seat 19 for mounting the lower end of the screw rod 14 is disposed on the inner bottom surface of the barrel-shaped housing 5 , and the lower end of the screw rod 14 is rotatably mounted in the axle seat 19 .

[0043] Preferably, there is a gap between the Secchi disk 16 and the barrel-shaped shell 5 for water to flow through.

[0044] Preferably, the light source 4, the water inlet pump 10, the solenoid valve 12, the first drive motor 15 and the video acquisition camera 13 are all connected to the communication control device via waterproof cables.

[0045] Preferably, the outer part of the cylindrical shell 1 is fixedly provided with a connecting sleeve 20, and the connecting sleeve 20 is connected to a steel cable 22 through a connecting frame 21. Thus, the steel cable 22 drives the water quality transparency monitoring device to move upward or downward inside the water body.

[0046] Preferably, the light source 4, the video acquisition camera 13 and the first driving motor 15 all have a water-proof sealing structure.

[0047] Preferably, Figure 4 As shown, the outer edge of the Secchi disk 16 is radially arranged with a plurality of annular high-temperature coloring areas 23, each of which is coated with a high-temperature coloring paint that is transparent at low temperatures and black at high temperatures, and a heating device for heating the high-temperature coloring area is arranged on the bottom surface of each high-temperature coloring area. By starting each heating device in sequence from the outside to the inside, each high-temperature coloring area 23 can be displayed as black as required, and the effective area of ​​the Secchi disk 16 can be reduced, so that the area of ​​the Secchi disk 16 can change dynamically according to the water depth, and can match the perspective relationship between the disk and the human eye in the national standard monitoring method. The problem of the proportion of the disk view at different water depths. Therefore, by adjusting the illumination intensity of the light source 4 and the effective area of ​​the Secchi disk 16, a greater water depth can be simulated within a limited length, so that the length of the monitoring device can be lower than the transparency distance, and it supports portability.

[0048] The method of using the portable water quality transparency monitoring device is as follows: Figure 6 As shown, the following steps are included:

[0049] S1. After installing the equipment, turn on the device in a waterless state and verify the reflection loss of the reflective surface of the Secchi disk under waterless conditions. Record the incident light intensity C0 under 100% incident light intensity conditions, then read the reflected light intensity to obtain the outgoing light intensity D0, and calculate the reflection loss ratio:

[0050] Reflection loss A = incident light intensity C0 - outgoing light intensity D0.

[0051] S2. Put water into the device. At this time, the incident light intensity C1 is equal to the incident light intensity C0, and the preliminary reading begins.

[0052] Outgoing light intensity D1 = incident light intensity C1 - water absorption light intensity B1 *2 - reflection loss A

[0053] Select the light intensity on the white board and the black board reflected on the Secchi disk 16: white board light intensity E11 and black board light intensity E12. When the difference between the two is less than 5%, it is determined that the transparency monitoring requirement is met. Move the Secchi disk 16 upward until the difference between the two is less than 5%, record the distance L1 between the board and the lens, and the transparency is L1.

[0054] S3. If the value does not reach less than 5%, adjust the incident light intensity to avoid repeated calculation of reflection loss.

[0055] At this time, the incident light intensity C2 is taken out by the incident light intensity D1 + reflection loss A

[0056] Select the light intensity on the reflective white board and the reflective black block, that is, the white board light intensity E21 and the black board light intensity E22. When the difference between the two is less than 5%, it is determined that the transparency monitoring requirement is met. Move the Secchi disk 16 upward until the difference between the two is less than 5%, and record the distance L2 between the board and the lens. The transparency is the device optical path L0+L2.

[0057] S4. If the difference between the whiteboard light intensity and the blackboard light intensity is not less than 5%, repeat the above step S3 to adjust the incident light intensity until the difference between the light intensity reflected on the whiteboard and the light intensity reflected on the black block, i.e., the whiteboard light intensity En1 and the blackboard light intensity En2, is less than 5%. Move the Secchi disk 16 upward until the difference between the whiteboard light intensity En1 and the blackboard light intensity En2 is less than 5%, record the distance Ln between the board and the lens, and the final transparency is the device optical path L0*(n-1)+Ln.

[0058] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The words "comprise" or "include" do not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The use of the words first, second, and third, etc., does not indicate any order, and these words may be interpreted as names.

[0059] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0060] The light source of the present invention provides a stable lighting environment, so that water quality transparency monitoring can be unaffected by lighting conditions, thereby broadening the application scope of the water quality transparency monitoring device, and the detection result is accurate and reliable.

[0061] The measuring tube constitutes a closed detection environment, which is not affected by factors such as wind and waves, flow velocity and water buoyancy. The detection is less affected by external interference, which also improves the accuracy and reliability of the test results.

[0062] The Secchi disk is driven to slide by the screw rod and the first driving motor, which has a high degree of automation, improves the automation degree of the measuring process, and reduces the difficulty of operation.

[0063] The device has a compact structure, is easy to disassemble and clean, and is highly portable, so it can be carried to traditional measurement sites for on-site mobile measurement.

[0064] All features disclosed in this specification, except mutually exclusive features, can be combined in any way.

[0065] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0066] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A portable water quality transparency monitoring device, characterized in that: It comprises an ambient light simulating sleeve and a measuring sleeve, the ambient light simulating sleeve comprises a cylindrical shell and an annular cover, the cylindrical shell comprises a cylindrical inner side wall, a cylindrical outer side wall and an annular bottom plate, the cylindrical inner side wall, the cylindrical outer side wall and the annular bottom plate enclose a sandwich cavity with only an upper end opening, the cylindrical inner side wall is a transparent side wall made of a transparent material, the cylindrical outer side wall is an opaque side wall made of an opaque light-shielding material, a cylindrical reflector is arranged in the sandwich cavity, the cylindrical reflector has different reflectivities according to the visual turbidity of the water body, when the water body is turbid, the inner surface of the cylindrical reflector is a rough reflective surface, when the water body is clear, the inner surface of the cylindrical reflector is a smooth reflective surface, the annular cover is installed on the upper part of the cylindrical shell and seals the upper end opening of the sandwich cavity; The measuring cylinder comprises a barrel-shaped shell with an upper opening and a cover plate for sealing the upper opening. The barrel-shaped shell is a transparent barrel-shaped shell made of a transparent material. The outer diameter of the barrel-shaped shell matches the inner diameter of the cylindrical inner wall of the barrel-shaped shell. The barrel-shaped shell is coaxially inserted into the interior of the simulated ambient light sleeve. The inner edge of the annular bottom plate exceeds the cylindrical inner wall, so that the inner edge of the annular bottom plate exceeds the cylindrical inner wall to form a support portion for the barrel-shaped shell. The barrel-shaped shell and the cover plate form an inner cavity for containing water samples. A first pipe connected to the inner cavity is arranged on the bottom surface of the barrel-shaped shell. The first pipe is connected to a water inlet pump. The water inlet pump is fixedly arranged at the lower part of the barrel-shaped shell. The water inlet pump is used to pump external water into the inner cavity. A second pipe connected to the inner cavity is arranged on the cover plate. An electromagnetic valve is arranged on the second pipe. The cover plate is also provided with a light source, a video acquisition camera, a screw and a first drive motor. The light source emits a light beam downward to form natural daylight conditions in the inner cavity. A Secchi disk is provided in the barrel-shaped shell. Two slide rails extending in the vertical direction are symmetrically provided on the inner wall of the barrel-shaped shell. The two sides of the Secchi disk are correspondingly slidably installed on the slide rails. The slide rails guide the Secchi disk to slide in the vertical direction. The screw extends in the vertical direction and is rotatably installed on the cover plate. The upper end of the screw is connected to the motor shaft of the first drive motor for transmission. The screw is driven to rotate by the first drive motor. The Secchi disk is provided with a threaded hole matching the screw. The Secchi disk is sleeved on the screw through the threaded hole, so that the Secchi disk is driven to reciprocate in the vertical direction by the forward or reverse rotation of the screw. The video acquisition camera is used to shoot the Secchi disk from the cover plate. The outer edge of the Secchi disk is radially arranged with multiple annular high-temperature color-developing areas in sequence, each of which is coated with a high-temperature color-developing paint that is transparent at low temperatures and black at high temperatures, and a heating device for heating the high-temperature color-developing area is provided on the bottom surface of each high-temperature color-developing area.

2. A portable water quality transparency monitoring device as claimed in claim 1, characterized in that: An axle seat for mounting the lower end of the screw is arranged on the inner bottom surface of the barrel-shaped shell, and the lower end of the screw is rotatably mounted in the axle seat.

3. A portable water quality transparency monitoring device as claimed in claim 1, characterized in that: There is a gap between the Secchi disk and the barrel-shaped shell for water to flow through.

4. A portable water quality transparency monitoring device as claimed in claim 1, characterized in that: The light source, water inlet pump, solenoid valve, first drive motor and video acquisition camera are all connected to the communication control device via waterproof cables.

5. A portable water quality transparency monitoring device as claimed in claim 1, characterized in that: The outer fixing arrangement of the cylindrical shell is provided with a connecting sleeve, which is connected to the steel cable through a connecting frame, so that the water quality transparency monitoring device is driven by the steel cable to move upward or downward inside the water body.

6. A portable water quality transparency monitoring device as claimed in claim 4, characterized in that: The light source, the video acquisition camera and the first driving motor all have a water-proof sealing structure.

7. The method for using the portable water quality transparency monitoring device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. After installing the equipment, turn on the device in a waterless state, check the reflection loss of the reflecting surface of the Secchi disk under waterless conditions, record the incident light intensity C0 under 100% incident light intensity conditions, then read the reflected light intensity to obtain the outgoing light intensity D0, and calculate the reflection loss ratio: reflection loss A = incident light intensity C0 - outgoing light intensity D0; S2. Put water into the device. At this time, the incident light intensity C1 is equal to the incident light intensity C0, and the preliminary reading begins: Outgoing light intensity D1 = incident light intensity C1 - water absorption light intensity B1*2 - reflection loss A, Select the light intensity on the white board and the black board reflected on the Secchi disk: the white board light intensity E11 and the black board light intensity E12. When the difference between the two is less than 5%, it is determined that the transparency monitoring requirement is met; move the Secchi disk upward until the difference between the two is less than 5%, and record the distance L1 between the board and the lens, then the transparency is L1; S3. If the value does not reach less than 5%, adjust the incident light intensity to avoid repeated calculation of reflection loss; At this time, the incident light intensity C2 is equal to the incident light intensity D1 + reflection loss A, Select the light intensity on the reflective white board and the reflective black block, that is, the white board light intensity E21 and the black board light intensity E22. When the difference between the two is less than 5%, it is determined that the transparency monitoring requirement is met; move the Secchi disk upward until the difference between the two is less than 5%, and record the distance L2 between the board and the lens. The transparency is the device optical path L0+L2; S4. If the difference between the whiteboard light intensity and the blackboard light intensity does not reach less than 5%, repeat the above step S3 to adjust the incident light intensity until the difference between the light intensity reflected on the whiteboard and the light intensity reflected on the black block, i.e., the whiteboard light intensity En1 and the blackboard light intensity En2, is less than 5%; move the Secchi disk upward until the difference between the whiteboard light intensity En1 and the blackboard light intensity En2 is less than 5%, record the distance Ln between the board and the lens, and the final transparency is the device optical path L0*(n-1)+Ln.

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