Optical path adjustable replaceable multi-adaptability water body attenuation coefficient measuring instrument

Abstract

This utility model discloses a multi-adaptive water attenuation coefficient measuring instrument with adjustable and replaceable optical path length, including a sample cell with an inlet and an outlet. Telescopic rods, designated as a first telescopic rod and a second telescopic rod, are provided on both sides of the sample cell. A first optical window is connected to the end of the first telescopic rod closest to the sample cell, and a second optical window is connected to the end of the second telescopic rod closest to the sample cell. A light source module is disposed in the first optical window, and a detection module is disposed in the second optical window. By providing telescopic rods on both sides of the sample cell to move the optical windows, the distance between the light source module and the detection module becomes adjustable, thus solving the problem of fixed optical path length or reliance on manual adjustment in existing measuring instruments.

Description

Technical Field

[0001] This utility model relates to the field of water body optical parameter measurement technology, specifically to a multi-adaptive water body attenuation coefficient measuring instrument with adjustable and replaceable optical path. Background Technology

[0002] The water attenuation coefficient is a key optical parameter reflecting the ability of water to absorb and scatter light, and it is widely used in marine surveys, lake ecological monitoring, and water quality assessment. Accurate measurement of the water attenuation coefficient can provide important data support for water environment management, water resource protection, and ecological research.

[0003] Existing instruments for measuring water attenuation coefficients have several shortcomings: some instruments have fixed optical paths, which cannot adapt to the measurement needs of water with different turbidity and depth, thus limiting the applicability of the measurement; instruments with adjustable optical paths mostly rely on manual adjustment, which is cumbersome to operate and lacks accuracy; the optical window, as a core component, is easily contaminated or damaged, but the optical window of existing instruments is difficult to replace and has high maintenance costs; at the same time, the sample cell structure is not reasonably designed, and the water is not completely replaced, which easily leaves residual air bubbles that affect the accuracy of the measurement. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-adaptive water body attenuation coefficient measuring instrument with adjustable and replaceable optical path, so as to solve the problem of low optical path adjustment accuracy of existing water body attenuation coefficient measuring instruments.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An adjustable and replaceable multi-adaptive water attenuation coefficient measuring instrument includes a sample cell with an inlet and an outlet. Telescopic rods, designated as a first telescopic rod and a second telescopic rod, are provided on both sides of the sample cell. A first optical window is connected to the end of the first telescopic rod closest to the sample cell, and a second optical window is connected to the end of the second telescopic rod closest to the sample cell. A light source module is provided in the first optical window, and a detection module is provided in the second optical window.

[0007] Optionally, the first optical window, the second optical window and the sample cell are connected by a detachable sealed connection structure.

[0008] Optionally, the sample cell is a black cylindrical shape.

[0009] Optionally, both the first and second telescopic rods are driven by servo electric cylinders.

[0010] Optionally, the adjustable and replaceable optical path multi-adaptive water body attenuation coefficient measuring instrument further includes a control module. The control module is connected to the light source module, the detection module, the first telescopic rod, and the second telescopic rod, respectively, and is used to control the opening and closing of the light source module, the signal acquisition of the detection module, and the extension and retraction of the first telescopic rod and the second telescopic rod.

[0011] Optionally, the light source module uses a helium-neon laser.

[0012] Optionally, the detection module employs a photomultiplier tube.

[0013] Optionally, the control module uses an STM32 microcontroller.

[0014] Optionally, the inlet and outlet are located on the upper and lower sides of the center of the sample pool; both the inlet and outlet are equipped with valve control switches.

[0015] Compared with the prior art, the advantages of this utility model are as follows:

[0016] The adjustable and replaceable optical path multi-adaptive water body attenuation coefficient measuring instrument provided by this utility model solves the problem of fixed optical path or reliance on manual adjustment in existing measuring instruments by setting telescopic rods on both sides of the sample cell to move the optical window. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of the adjustable and replaceable multi-adaptive water body attenuation coefficient measuring instrument provided in the embodiments of this application;

[0018] In the diagram: 1. Sample cell; 101. Inlet; 102. Outlet; 2. First telescopic rod; 3. Second telescopic rod; 4. First optical window; 5. Second optical window; 6. Light source module; 7. Detection module; 8. Control module; 9. Data processing module. Detailed Implementation

[0019] Example:

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can be a mechanical connection or an electrical connection; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0026] See Figure 1 As shown, the adjustable and replaceable optical path multi-adaptive water body attenuation coefficient measuring instrument provided in this embodiment includes a sample cell 1, which is provided with an inlet 101 and an outlet 102; telescopic rods are provided on both sides of the sample cell 1, namely a first telescopic rod 2 and a second telescopic rod 3. A first optical window 4 is connected to the end of the first telescopic rod 2 near the sample cell 1, and a second optical window 5 is connected to the end of the second telescopic rod 3 near the sample cell 1; a light source module 6 is provided in the first optical window 4, and a detection module 7 is provided in the second optical window 5. The detection light emitted by the light source module 7 can pass through the water body along the axis of the sample cell 1 and be received by the detection module 7.

[0027] Therefore, the adjustable and replaceable optical path multi-adaptive water body attenuation coefficient measuring instrument provided in this embodiment solves the problem of fixed optical path or reliance on manual adjustment in existing measuring instruments by setting telescopic rods on both sides of the sample cell to move the optical window.

[0028] In one specific embodiment, the sample cell 1 is made of black cylindrical PVC material. The black cylindrical sample cell provides a dark room environment for measurement, reducing interference from external stray light. The inlet 101 and the outlet 102 are located on the upper and lower sides of the center of the sample cell 1, respectively. The inlet 101 is used to inject the water to be measured into the sample cell 1, and the outlet 102 is used to discharge the water after measurement, ensuring that the water in the sample cell 1 can be quickly and thoroughly replaced. Both the inlet 101 and the outlet 102 are equipped with valve control switches.

[0029] In one specific embodiment, the light source module 6 uses a helium-neon laser with a wavelength of 632.8 nm, and the detection module 7 uses a photomultiplier tube. The light source module 6 and the detection module 7 are detachably and sealingly connected to the left and right ends of the sample cell 1 via a first optical window 4 and a second optical window 5, both equipped with dynamic sealing functions. Both the first optical window 4 and the second optical window 5 are made of quartz glass, and rubber sealing gaskets are used at the connection points with the sample cell 1 to achieve dynamic sealing. Thus, because the first optical window 4 and the second optical window 5 have dynamic sealing functions and adopt a detachable connection structure, the sample cell sealing is ensured, replacement is convenient, maintenance costs are reduced, and downtime is minimized.

[0030] In one specific embodiment, both the first telescopic rod 2 and the second telescopic rod 3 are driven by servo electric cylinders. Servo electric cylinders have high-precision control capabilities and accurate optical path adjustment, meeting the measurement needs of different water environments.

[0031] In a preferred embodiment, the adjustable and replaceable optical path multi-adaptive water attenuation coefficient measuring instrument further includes a control module 8 and a data processing module 9. The control module 8, employing an STM32 microcontroller, is connected to the light source module 6, the detection module 7, the first telescopic rod 2, and the second telescopic rod 3. It controls the opening and closing of the light source module 6, the signal acquisition of the detection module 7, and the extension and retraction of the first and second telescopic rods 2 and 3, thereby changing the distance between the light source module and the detection module to adjust the optical path. The dynamic range of the optical path change is greater than or equal to the installation dimensions of the inlet 101 and outlet 102, and less than twice the extension length of the telescopic rods. The data processing module 9 is electrically connected to the detection module 7 and processes and analyzes the optical signals acquired by the detection module 7 to calculate the water attenuation coefficient.

[0032] Specifically, the working process of the adjustable and replaceable optical path multi-adaptive water body attenuation coefficient measuring instrument provided in this embodiment includes the following steps:

[0033] S1, based on the characteristics of the river water body to be measured, sets the required optical path value to 0.05m through the control module.

[0034] S2, the control module controls the extension and retraction of the first telescopic rod and the second telescopic rod, pushing the first optical window and the second optical window to move, so that the distance between the light source module and the detection module reaches 0.05m.

[0035] S3, open the inlet valve and inject the water to be measured into the black cylindrical sample cell through the inlet. Wait for the water to overflow from the outlet to ensure that there are no air bubbles in the sample cell before starting the measurement.

[0036] S4, the control module controls the light source module to emit 632.8nm detection light. The detection light passes through the first optical window and enters the water in the sample cell. After being attenuated by the water, it passes through the second optical window and is received by the detection module.

[0037] S5, the detection module converts the received optical signal into an electrical signal and transmits it to the data processing module. The data processing module processes and analyzes the electrical signal and calculates the water attenuation coefficient under this optical path according to the Lambert-Beer law.

[0038] S6. When it is necessary to measure the water attenuation coefficient when the optical path is 0.1m, the optical path value is set to 0.1m through the control module. After controlling the first telescopic rod and the second telescopic rod to push the first optical window and the second optical window to the corresponding position, the steps S3-S5 are repeated to perform the measurement.

[0039] S7. After multiple measurements, if it is found that there are adhering substances on the surface of the first optical window and / or the second optical window that affect the light transmittance, unscrew the first optical window and / or the second optical window from the sample cell, replace them with new first optical windows and / or the second optical window, and continue the measurement.

[0040] In summary, the adjustable and replaceable optical path multi-adaptive water body attenuation coefficient measuring instrument provided in this embodiment has the following technical advantages compared with the prior art:

[0041] 1. The design of the water inlet and outlet on the upper and lower sides of the center of the sample cell enables rapid and thorough water replacement, avoiding residual air bubbles from affecting measurement accuracy.

[0042] 2. The optical path is adjusted by extending and retracting the optical windows on both sides through the telescopic rod. The adjustment process is highly automated, and the servo electric cylinder has high-precision control capabilities, ensuring accurate optical path adjustment and meeting the measurement needs of different water environments.

[0043] 3. The optical window has a dynamic sealing function and adopts a detachable connection structure, which not only ensures the sealing of the sample cell, but also facilitates replacement, reduces maintenance costs, and minimizes downtime.

[0044] 4. The overall structure is reasonably designed, and all components work together to ensure good measurement stability and high accuracy. It is suitable for measuring the attenuation coefficient of various water bodies such as oceans, lakes, and rivers, and has strong adaptability.

[0045] The above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the substance of the content of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A multi-adaptive water attenuation coefficient measuring instrument with adjustable and replaceable optical path, characterized in that, The device includes a sample cell with an inlet and an outlet. Telescopic rods, designated as a first telescopic rod and a second telescopic rod, are installed on both sides of the sample cell. A first optical window is connected to the end of the first telescopic rod closest to the sample cell, and a second optical window is connected to the end of the second telescopic rod closest to the sample cell. A light source module is installed in the first optical window, and a detection module is installed in the second optical window.

2. The adjustable and replaceable optical path multi-adaptive water body attenuation coefficient measuring instrument as described in claim 1, characterized in that, The first optical window, the second optical window and the sample cell are connected by a detachable sealed connection structure.

3. The interchangeable multi-adaptable instrument for measuring attenuation coefficient of aquatic body according to claim 1, wherein, The sample cell is a black cylindrical shape.

4. The interchangeable multi-adaptable instrument for measuring attenuation coefficients of aquatic bodies with adjustable optical path according to claim 1, characterized in that, Both the first and second telescopic rods are driven by servo electric cylinders.

5. The interchangeable multi-adaptable instrument for measuring attenuation coefficient of aquatic body according to claim 4, wherein, It also includes a control module, which is connected to the light source module, the detection module, the first telescopic rod, and the second telescopic rod, respectively, and is used to control the opening and closing of the light source module, the signal acquisition of the detection module, and the extension and retraction of the first telescopic rod and the second telescopic rod.

6. The interchangeable multi-adaptable instrument for measuring attenuation coefficient of aquatic body according to claim 1 or 5, characterized in that, The light source module uses a helium-neon laser.

7. The interchangeable multi-adaptable instrument for measuring attenuation coefficient of aquatic body according to claim 1 or 5, characterized in that, The detection module uses a photomultiplier tube.

8. The adjustable and replaceable optical path multi-adaptive water body attenuation coefficient measuring instrument as described in claim 5, characterized in that, The control module uses an STM32 microcontroller.

9. The interchangeable multi-adaptable optical path adjustable water body attenuation coefficient measuring instrument of claim 1, wherein, The inlet and outlet are located on the upper and lower sides of the center of the sample cell; both the inlet and outlet are equipped with valve control switches.

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