Water environment monitoring equipment

Abstract

The utility model relates to the technical field of water environment monitoring, in particular to water environment monitoring equipment, which comprises a shell, a light source, a first detection piece and a second detection piece, and the bottom side of the shell is provided with an inward concave detection cavity; at least the detection cavity on the shell is suitable for being placed in a water body to be detected; the light source is arranged in the shell; light emitted by the light source irradiates a to-be-detected water body in the detection cavity; the first detection piece is arranged in the shell; the first detection piece is configured to receive transmission light passing through a to-be-detected water body in the detection cavity; the second detection piece is arranged in the shell; the second detection piece is configured to receive scattered light and / or fluorescent light generated by the light passing through the to-be-detected water body. According to the water environment monitoring equipment, the detection cavity which is concave inwards is formed in the bottom side of the shell, and the water environment monitoring equipment needs to be placed in a water body to be detected when being used, so that a detection part is arranged at the bottom, and the water environment monitoring equipment can adapt to a relatively shallow water body.

Description

TECHNICAL FIELD

[0001] The utility model relates to monitoring technical field, concretely relates to a water environment monitoring equipment. BACKGROUND

[0002] Since the 1960s, the role of optical methods in water quality parameter research has been continuously concerned by domestic and foreign scholars. Among them, the spectral method has the advantages of high sensitivity, no reagent, online real-time detection, etc. It has been widely used in water quality detection field.

[0003] The absorption spectrum method for detecting water quality is mainly based on the different absorption characteristics of different substances to specific wavelengths of light. When light passes through a water sample containing a substance to be detected, some components in the water sample will absorb light of a specific wavelength, thereby reducing the intensity of the light. By measuring the intensity change of the light before and after passing through the water sample, the substances in the water sample can be qualitatively and quantitatively analyzed.

[0004] However, due to the principle, the detection method based on absorption spectrum needs to completely immerse the detection light path in water. For relatively deep scenes, such as rivers, drainage outlets and pipes, there is no problem. But for relatively shallow scenes or scenes with large water depth fluctuations, the light path cannot be completely immersed in water, which will greatly affect the actual measurement results. UTILITARY MODEL CONTENTS

[0005] Therefore, the utility model provides a kind of water environment monitoring equipment to solve the problem that traditional absorption method-based spectral detection method cannot adapt to relatively shallow water body.

[0006] In the first aspect, the utility model provides a kind of water environment monitoring equipment, comprising:

[0007] The shell is provided with a detection cavity recessed inward on the bottom side, and the detection cavity comprises an opening arranged downward; at least the detection cavity on the shell is adapted to be placed in the water body to be measured, and the detection cavity is used for water to be detected to flow through or fill;

[0008] The light source is arranged in the shell and located on the side away from the opening of the detection cavity; the light emitted by the light source irradiates the water body to be measured inside the detection cavity;

[0009] The first detection member is arranged in the shell; the first detection member is configured to receive the transmitted light passing through the water body to be measured inside the detection cavity;

[0010] The second detection member is arranged in the shell and located on the side away from the opening of the detection cavity; the second detection member is configured to receive the scattered light and / or fluorescence generated by the light passing through the water body to be measured.

[0011] In an alternative embodiment, the light emitted by the light source at least partially passes through downward and horizontal propagation to irradiate the water body inside the detection cavity; and / or, the water environment monitoring device further comprises:

[0012] A first reflecting member is arranged in the housing, and is configured to receive the light emitted by the light source and reflect the light in a horizontal direction to irradiate the detection cavity.

[0013] In an alternative embodiment, the receiving end of the first detection member is arranged downward, and the water environment monitoring device further comprises: a second reflecting member arranged in the housing, and configured to receive the transmitted light passing through the water body inside the detection cavity, and reflect the light to the first detection member.

[0014] In an alternative embodiment, the water environment monitoring device further comprises:

[0015] A first light path element and a third detection member are arranged in the housing, the first light path element is configured to receive the light emitted by the light source and transmit part of the light to the first reflecting member, and is further configured to receive the light emitted by the light source and reflect part of the light in a direction around the detection cavity as reference light, and the third detection member is used to receive the reference light.

[0016] In an alternative embodiment, the water environment monitoring device further comprises: a first light path element and a second light path element arranged in the housing, the first light path element is configured to receive the light emitted by the light source and transmit part of the light to the first reflecting member, and is further configured to receive the light emitted by the light source and reflect part of the light in a direction around the detection cavity as reference light;

[0017] The second light path element is located below the second detection member, and is configured to reflect at least part of the reference light to the second detection member;

[0018] The second light path element is further configured to transmit the scattered light and / or the fluorescent light.

[0019] In an alternative embodiment, the water environment monitoring device further comprises: a third detection member, and the second light path element is further configured to transmit part of the reference light to the third detection member.

[0020] In an alternative embodiment, the second light path element is further configured to transmit part of the reference light to the first detection element, and the water environment monitoring device further comprises a light path switching element, which switches between blocking the transmitted light passing through the water body inside the detection cavity from entering the first detection element and blocking the reference light from entering the first detection element.

[0021] In an alternative embodiment, the receiving end of the third detection element is arranged downwardly, and the water environment monitoring device further comprises a second reflection element arranged below the third detection element, and the reference light transmitted through the second light path element is configured to be reflected to the third detection element through the second reflection element.

[0022] In an alternative embodiment, a plurality of reflection elements are arranged on both sides of the detection cavity along the height direction of the detection cavity, and the reflection elements are configured to reflect the light emitted by the light source, and the light passes through the detection cavity at least twice along the height direction of the detection cavity before being received by the first detection element.

[0023] Alternatively, a plurality of reflection elements are arranged on both sides of the detection cavity along the horizontal direction, and the reflection elements are configured to reflect the light emitted by the light source, and the light passes through the detection cavity at least twice along the horizontal direction before being received by the first detection element.

[0024] In an alternative embodiment, a plurality of regions are arranged on the second detection element, and at least part of the regions are provided with a light filtering film for filtering out the light directly emitted by the light source; and / or the water environment monitoring device further comprises a collimator arranged at the light emitting end of the light source; and / or the light source comprises a plurality of sub-sources of different wavelengths.

[0025] The water environment monitoring device provided by the utility model has the following advantages:

[0026] The water environment monitoring device provided by the utility model comprises a shell, a light source, a first detection element and a second detection element, the bottom side of the shell is provided with an inwardly recessed detection cavity, the detection cavity comprises an opening arranged downwardly, at least the detection cavity on the shell is adapted to be placed in a water body to be detected, and the detection cavity is used for passing or filling the water to be detected; the light source is arranged in the shell and located on the side away from the opening of the detection cavity; the light emitted by the light source irradiates the water body to be detected inside the detection cavity; the first detection element is arranged in the shell; the first detection element is configured to receive the transmitted light passing through the water body to be detected inside the detection cavity; the second detection element is arranged in the shell and located on the side away from the opening of the detection cavity; and the second detection element is configured to receive the scattered light and / or fluorescence generated by the light passing through the water body to be detected.

[0027] The water environment monitoring device has the detection cavity concave inward on the bottom side of the shell, and the light source and the light path are adjusted, so that the water environment monitoring device can adapt to deep water bodies and relatively shallow water bodies, external light interference can be avoided, and monitoring precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0029] Figure 1 FIG. 1 is a structural schematic view of a water environment monitoring device provided in an embodiment 1 of the present application;

[0030] FIG. 2(a) is a structural schematic view of a water environment monitoring device provided in an embodiment 2 of the present application;

[0031] FIG. 2(b) is another structural schematic view of a water environment monitoring device provided in an embodiment 3 of the present application;

[0032] FIG. 2(c) is another structural schematic view of a water environment monitoring device provided in an embodiment 4 of the present application;

[0033] Figure 3 FIG. 5 is a structural schematic view of a water environment monitoring device provided in an embodiment 5 of the present application;

[0034] Figure 4 FIG. 5 is a structural schematic view of a water environment monitoring device provided in an embodiment 5 of the present application;

[0035] Figure 5 FIG. 5 is a structural schematic view of a water environment monitoring device provided in an embodiment 5 of the present application;

[0036] FIG. 6(a) is another structural schematic view of a water environment monitoring device provided in an embodiment 6 of the present application;

[0037] FIG. 6(b) is another structural schematic view of a water environment monitoring device provided in an embodiment 6 of the present application.

[0038] Explanation of Reference Signs:

[0039] 1 - shell;

[0040] 2 - detection cavity;

[0041] 3 - light source;

[0042] 4 - first detection member;

[0043] 5 - second detection member;

[0044] 6 - first reflection member;

[0045] 7a, 7b, 7c, 7d - second reflection member;

[0046] 8 - third detection member;

[0047] 9 - first optical path element;

[0048] 10 - second optical path element;

[0049] 11 - collimator;

[0050] 12 - optical path switching element;

[0051] 13 - third optical path element. DETAILED DESCRIPTION

[0052] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0053] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0054] Example 1

[0055] Since the 1960s, the role of optical methods in the study of water quality parameters has been continuously concerned by scholars at home and abroad. Among them, the spectral method has the advantages of high sensitivity, no reagent, online real-time detection, etc., and has been widely used in water quality detection field.

[0056] The absorption spectrum method for detecting water quality is mainly based on the different absorption characteristics of different substances at specific wavelengths. When light passes through a water sample containing the substance to be detected, some components in the water sample will absorb light of a specific wavelength, thereby reducing the intensity of the light. By measuring the change in intensity of the light before and after passing through the water sample, the substances in the water sample can be qualitatively and quantitatively analyzed.

[0057] However, limited by this principle, the spectral detection method based on the absorption method needs to completely immerse the light path in the water. For relatively deep rivers, drainage outlets, and relatively deep tube wells, etc., there is no problem. But for relatively shallow water bodies or water bodies with large changes in water depth, the light path cannot be completely immersed in the water, which will greatly affect the actual measurement results.

[0058] Therefore, the present embodiment provides a water environment monitoring device, as shown in Figure 1 The device includes a housing 1, a light source 3, a first detection member 4, and a second detection member 5. The light source 3 includes multiple sub-light sources of different wavelengths. The bottom side of the housing 1 is provided with a detection cavity 2 that is recessed inward. The detection cavity 2 includes an opening that is arranged downward. At least the detection cavity 2 on the housing 1 is adapted to be placed in the water body to be detected. The detection cavity 2 is for the water to be detected to flow through or be filled (this filling is not limited to being completely filled, as long as the test requirements are met). The light source 3 is arranged in the housing 1 and located on the side away from the opening of the detection cavity 2. The light emitted by the light source 3 irradiates the water to be detected inside the detection cavity 2. The first detection member 4 is arranged in the housing 1. The first detection member 4 is configured to receive transmitted light that has passed through the water to be detected inside the detection cavity 2. The second detection member 5 is arranged in the housing 1 and located on the side away from the opening of the detection cavity 2. The second detection member 5 is configured to receive scattered light and / or fluorescence generated by the light passing through the water to be detected.

[0059] Since the traditional detection method based on absorption spectrum needs to completely immerse the detection light path in the water, in order for the detection light path to be completely immersed in the water when facing relatively shallow water bodies, the present embodiment provides a detection cavity 2 that is recessed inward on the bottom side of the housing 1. The detection cavity 2 includes an opening that is arranged downward, and water enters the inside of the detection cavity 2 through the opening on the detection cavity 2. A light source 3 is arranged in the housing 1. The light source 3 functions to generate light. In the present embodiment, since the water quality inside the detection cavity 2 needs to be detected, the light generated by the light source 3 needs to pass through the water to be detected inside the detection cavity 2.

[0060] Optionally, as shown in the structure of Figure 1 The light emitted by the light source 3 irradiates the water to be detected inside the detection cavity 2 after downward and horizontal propagation. The housing 1 is provided with a light-transmitting portion on the cavity wall of the detection cavity 2. This portion is used for the light to pass through.

[0061] In addition to the opening, the above-mentioned detection cavity also has two non-closed opposite sides, so that the water to be detected can flow into or out of the detection cavity.

[0062] In order to realize the detection of the water quality inside the detection cavity 2, a first detection piece 4 is arranged in the shell 1, which is an existing detector for receiving the transmitted light passing through the water body to be detected inside the detection cavity 2. Meanwhile, a second detection piece 5 is also arranged in the shell 1, which is used to receive the scattered light and / or fluorescence generated by the light passing through the water body to be detected. The second detection piece 5 is arranged in the shell 1 and located on the side away from the opening of the detection cavity 2. By analyzing the light received by the first detection piece 4 and the second detection piece 5, the water quality inside the detection cavity 2 is detected. By arranging multiple detection pieces at different positions to receive different spectral information, multi-parameter analysis is realized and the monitoring accuracy is improved. The specific spectral detection and analysis method is a prior art, which is directly used in the present embodiment, so its principle will not be described in detail here.

[0063] The above structure, by arranging the inwardly recessed detection cavity 2 at the bottom side of the shell 1, and adjusting the light source and other structures and the light path, the water environment monitoring device provided by the present application can adapt to deep water bodies and also to relatively shallow water bodies, and can avoid external light interference, thereby improving the monitoring accuracy.

[0064] In the present embodiment, as shown in Figure 1 The water environment monitoring device further comprises a first reflecting piece 6 and a second reflecting piece 7a. The first reflecting piece 6 is arranged in the shell 1 and is configured to receive the light emitted by the light source 3 and reflect it in the horizontal direction to illuminate the detection cavity 2. The second reflecting piece 7a is also arranged in the shell 1 and is configured to receive the transmitted light passing through the water body to be detected inside the detection cavity 2 and reflect it towards the first detection piece 4. The receiving end of the first detection piece 4 is arranged downward. The horizontal direction is not limited to having a 0-degree angle with the horizontal direction, but can also be inclined, i.e. having a certain angle with the horizontal direction.

[0065] As shown in Figure 1 The first reflecting piece 6 and the light source 3 are arranged on the right side of the detection cavity 2, and the second reflecting piece 7a and the first detection piece 4 are arranged on the left side of the detection cavity 2. The arrangement of the first reflecting piece 6 can adjust the transmission direction of the light emitted by the light source 3, so that the light can accurately pass through the light-transmitting part arranged on the cavity wall of the detection cavity 2 of the shell 1 and enter the water body inside the detection cavity 2. Meanwhile, the second reflecting piece 7a is arranged on the left side of the detection cavity 2 and is configured to receive the transmitted light passing through the water body to be detected inside the detection cavity 2 and reflect it towards the first detection piece 4, i.e. the second reflecting piece 7a is used to adjust the transmission direction of the light that has passed through the detection cavity 2 and reenters the inside of the shell 1, so that this light can be accurately received by the first detection piece 4.

[0066] Further, the second detection member 5 is provided with at least a scattered light receiving area and a fluorescent light receiving area, the fluorescent light receiving area is provided with a light filter on the light inlet side, the scattered light receiving area is used for receiving scattered light, the fluorescent light receiving area is used for receiving fluorescent light, the light filter provided on the fluorescent light receiving area is used for filtering out light directly emitted by the light source or interference light, so as to avoid affecting the detection of fluorescent light.

[0067] Further, the placement angle of the second detection member 5 is adjustable, and the included angle between the receiving end of the second detection member 5 and the height direction of the detection cavity can be 45-135 degrees. Figure 1 In the embodiment, the angle between the receiving end of the second detection member 5 and the height direction of the detection cavity is 90 degrees. By adjusting the placement angle of the second detection member 5, the receiving range of the scattered light and / or fluorescent light generated by the light passing through the water to be detected can be increased.

[0068] Further, the light source 3 can be a single light source 3 as shown in Figure 1 , or a plurality of light sources 3, which finally converge on one light path.

[0069] In the embodiment, as shown in Figure 4 , the water environment monitoring device provided by the embodiment further comprises a plurality of reflecting members, the plurality of reflecting members are arranged on both sides of the detection cavity 2 along the height direction of the detection cavity 2, and the reflecting members are configured to reflect the light emitted by the light source 3, and the light passes through the detection cavity 2 at least twice along the height direction of the detection cavity 2 and is received by the first detection member 4.

[0070] In the embodiment, as shown in Figure 4 , the square part is a schematic diagram of the detection cavity 2, and the inside of the detection cavity 2 is the water to be detected. In the embodiment, reflecting members a, b and c are arranged in the height direction (water depth direction) of the detection cavity 2, the light emitted by the light source 3 passes through the reflecting members a, b and c twice and enters the inside of the detection cavity 2, and then is received by the first detection member 4. This design can increase the optical path by multiple times of entering the water and reduce the width of the detection area.

[0071] It can be understood that in other embodiments, the number of reflecting members can be increased to increase the number of times of entering the water.

[0072] As an alternative, as shown in Figure 5 , a plurality of reflecting members are arranged on both sides of the detection cavity 2 along the horizontal direction, and the reflecting members are configured to reflect the light emitted by the light source 3, and the light passes through the detection cavity 2 at least twice along the horizontal direction and is received by the first detection member 4.

[0073] Figure 5 is a top view of the water environment monitoring device, Figure 5 , the rectangular block is a schematic diagram of the detection cavity 2. In Figure 5In this embodiment, the light emitted by the light source 3 is reflected by the reflecting member a, enters the water in the detection cavity 2 along the horizontal direction, reaches the reflecting member b, is reflected by the reflecting member b and the reflecting member c, enters the water in the detection cavity 2 along the horizontal direction again, reaches the reflecting member d, is reflected by the reflecting member d, reaches the first detection member 4, and is received by the first detection member 4. In this embodiment, the light enters the water multiple times in the same plane, thereby increasing the optical path and reducing the width of the detection area.

[0074] In this embodiment, the light emitting end of the light source 3 can also be provided with a collimator 11.

[0075] Embodiment 2

[0076] In this embodiment, a water environment monitoring device is provided. Based on the water environment monitoring device of Embodiment 1, the water environment monitoring device of this embodiment further comprises a third detection member 8 and a first light path element 9 arranged in the housing 1. The third detection member 8 is arranged in the housing 1. The first light path element 9 is configured to receive the light emitted by the light source 3 and transmit part of the light to the first reflecting member 6. The first reflecting member 6 is configured to reflect the part of the light to the first detection member 4 in the direction of the detection cavity 2. The first light path element 9 is also configured to receive the light emitted by the light source 3 and reflect part of the light. The part of the light is configured to bypass the detection cavity 2 and be received by the third detection member 8.

[0077] As shown in FIG. 2(a), the first light path element 9 can reflect or transmit the light. The first light path element 9 can be a quartz sheet. In use, the first light path element 9 is arranged on the side from which the light source 3 emits light. The first light path element 9 receives the light emitted by the light source 3 and transmits part of the light to the first reflecting member 6. The first reflecting member 6 is arranged below the first light path element 9. After receiving the light transmitted through the first light path element 9, the first light path element 9 reflects the light in the direction of the detection cavity 2. The arrangement of the first reflecting member 6 adjusts the transmission direction of the light emitted by the light source 3, so that the light can accurately pass through the light-transmitting part arranged on the cavity wall of the detection cavity 2 of the housing 1 and enter the water in the detection cavity 2. In this embodiment, the first detection member 4 is directly arranged on the left side of the detection cavity 2. When the light entering the water in the detection cavity 2 enters the housing 1 again, the first detection member 4 directly receives the light.

[0078] Still referring to FIG. 2(a), the first light path element 9 also receives the light emitted by the light source 3 and reflects part of the light. The part of the light is configured to bypass the detection cavity 2 and be received by the third detection member 8. That is, the part of the light is only in the housing 1 and does not enter the detection cavity 2. The part of the light is reference light and is received by the third detection member 8.

[0079] In the embodiment, as shown in Fig. 2(a), the receiving end of the third detection member 8 is arranged downward, and the water environment monitoring device further comprises a second reflection member 7b arranged on one side of the third detection member 8, and the light emitted by the first light path element 9 is configured to be reflected to the third detection member 8 through the second reflection member 7b.

[0080] In Fig. 2(a), the second reflection member 7b is arranged on the lower side of the third detection member 8, and the second reflection member 7b is used to adjust the propagation direction of the part of the light reflected by the first light path element 9, so that the light can be accurately received by the third detection member 8.

[0081] Embodiment 3

[0082] In the embodiment, a water environment monitoring device is provided, and based on the water environment monitoring device of Embodiment 1, as shown in Fig. 2(b), the water environment monitoring device further comprises a first light path element 9 and a second light path element 10 arranged in the housing 1, the first light path element 9 is configured to receive the light emitted by the light source 3 and transmit part of the light to the first reflection member 6, and the first light path element 9 is further configured to receive the light emitted by the light source 3 and reflect part of the light in a direction away from the detection cavity as reference light; the second light path element 10 is arranged below the second detection member 5, and the second light path element 10 is configured to reflect at least part of the reference light to the second detection member 5; and the second light path element 10 is further configured to transmit the scattered light and / or the fluorescent light.

[0083] In the embodiment, the water environment monitoring device is provided with the second light path element 10 arranged on the lower side of the second detection member 5, and when the light reflected by the first light path element 9 transmits to the direction of the second light path element 10, the light passes through the second light path element 10. The second light path element 10 reflects part of the light passing therethrough to the second detection member 5 and is received by the second detection member 5, and the second detection member 5 detects the intensity change of the light source 3 through the part of the light. In this case, the third area for receiving the light reflected by the first light path element 9 is further arranged on the second detection member 5.

[0084] Among them, since the second light path element 10 can reflect light and also can transmit light, the second light path element 10 can transmit the scattered light and / or the fluorescent light generated by the water to be measured, and does not affect the reception of the scattered light and / or the fluorescent light by the second detection member 5.

[0085] Embodiment 4

[0086] The water environment monitoring device provided in the embodiment is shown in Fig. 2(c), the second light path element 10 is arranged between the third detection member 8 and the first light path element 9; the second light path element 10 is configured to receive the light reflected by the first light path element 9 and reflect part of the light to the second detection member 5; the second light path element 10 is also configured to transmit part of the reference light to the third detection member 8.

[0087] As shown in Fig. 2(c), the second light path element 10 is arranged between the third detection member 8 and the first light path element 9, specifically, the second light path element 10 is arranged at the lower side of the second detection member 5, when the light reflected by the first light path element 9 is transmitted to the third detection member 8, the light passes through the second light path element 10. The second light path element 10 can be the same as the first light path element 9, which can reflect light or transmit light, and the second light path element 10 can be a quartz piece. The second light path element 10 reflects part of the light passing through it to the second detection member 5 and is received by the second detection member 5, and the second detection member 5 detects the intensity change of the light source 3 through the part of the light.

[0088] In Fig. 2(c), the second reflecting member 7c is arranged at the lower side of the third detection member 8, and the second reflecting member 7c is used to adjust the transmission direction of the light passing through the second light path element 10, so that the light can be accurately received by the third detection member 8.

[0089] Embodiment 5

[0090] The water environment monitoring device provided in the embodiment is shown in Fig. 2(c), the second light path element 10 is arranged between the third detection member 8 and the first light path element 9; the second light path element 10 is configured to receive the light reflected by the first light path element 9 and reflect part of the light to the second detection member 5; the second light path element 10 is also configured to transmit part of the reference light to the third detection member 8. Figure 3 As shown in Fig. 2(c), the second light path element 10 is arranged between the third detection member 8 and the first light path element 9, specifically, the second light path element 10 is arranged at the lower side of the second detection member 5, when the light reflected by the first light path element 9 is transmitted to the third detection member 8, the light passes through the second light path element 10. The second light path element 10 can be the same as the first light path element 9, which can reflect light or transmit light, and the second light path element 10 can be a quartz piece. The second light path element 10 reflects part of the light passing through it to the second detection member 5 and is received by the second detection member 5, and the second detection member 5 detects the intensity change of the light source 3 through the part of the light.

[0091] As shown in Fig. 2(c), the second light path element 10 is arranged between the third detection member 8 and the first light path element 9, specifically, the second light path element 10 is arranged at the lower side of the second detection member 5, when the light reflected by the first light path element 9 is transmitted to the third detection member 8, the light passes through the second light path element 10. The second light path element 10 can be the same as the first light path element 9, which can reflect light or transmit light, and the second light path element 10 can be a quartz piece. The second light path element 10 reflects part of the light passing through it to the second detection member 5 and is received by the second detection member 5, and the second detection member 5 detects the intensity change of the light source 3 through the part of the light. Figure 3As shown, the first light path element 9 can reflect light and also transmit light, and the first light path element 9 can be a quartz piece. In use, the first light path element 9 is arranged on the side from which the light source 3 emits light, and the first light path element 9 receives the light emitted by the light source 3 and transmits part of the light to the first reflecting element 6, which is arranged on the lower side of the first light path element 9. After receiving the light that has transmitted through the first light path element 9, the first light path element 9 reflects the light in the direction of the detection cavity 2, and the arrangement of the first reflecting element 6 adjusts the transmission direction of the light emitted by the light source 3, so that the light can accurately pass through the light-transmitting part arranged on the cavity wall of the detection cavity 2 in the shell 1 and enter the water body inside the detection cavity 2. In this embodiment, the first detection element 4 is arranged directly on the left side of the detection cavity 2, and when the light that has entered the water body inside the detection cavity 2 reenters the inside of the shell 1, the first detection element 4 directly receives the light.

[0092] Still referring to Figure 3 , the third detection element 8 is arranged on the side of the first light path element 9, and the first light path element 9 also receives the light emitted by the light source 3 and reflects part of the light, which is directly received by the third detection element 8 arranged on the side of the first light path element 9, as reference light.

[0093] Embodiment 6

[0094] This embodiment provides a water environment monitoring device, as shown in FIGS. 6(a) and 6(b), which further comprises a first light path element 9 and a second light path element 10 arranged inside the shell 1 on the basis of the embodiment 1. The first light path element 9 is configured to receive the light emitted by the light source 3 and transmit part of the light to the first reflecting element 6, and the first light path element 9 is also configured to receive the light emitted by the light source 3 and reflect part of the light in the direction of bypassing the detection cavity 2 as reference light. The second light path element 10 is arranged below the second detection element 5, and the second light path element 10 is configured to reflect at least part of the reference light to the second detection element 5, and the second light path element 10 is also configured to transmit the scattered light and / or the fluorescent light.

[0095] In this embodiment, the second light path element 10 is also configured to transmit part of the reference light to the first detection element 4, and the water environment monitoring device further comprises a light path switching element 12 that switches between blocking the transmitted light passing through the water body inside the detection cavity 2 from entering the first detection element 4 (as shown in FIG. 6(a)) and blocking the reference light from entering the first detection element 4 (as shown in FIG. 6(b)).

[0096] The light path switching element can be a combination of a motor, a sliding groove, and a blocking piece, and the blocking piece is driven by the motor to move in the sliding groove, so as to switch between blocking the transmitted light passing through the water body inside the detection cavity 2 from entering the first detection element 4 and blocking the reference light from entering the first detection element 4.

[0097] When the receiving end of the first detecting piece 4 is arranged downward, the water environment monitoring device further comprises a third light path element 13 and a second reflecting element 7d, which are used for guiding light to the first detecting piece 4.

[0098] Obviously, the above embodiments are merely exemplary and are not intended to limit the implementation. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the implementations are not required or can not be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A water environment monitoring apparatus characterized by comprising: The application relates to a water environment monitoring device, comprising: a shell (1) provided with an inwardly recessed detection cavity (2) on the bottom side, wherein the detection cavity (2) comprises a downwardly arranged opening; at least the detection cavity (2) on the shell (1) is adapted to be placed in a water body to be detected, and the detection cavity (2) is used for water to be detected to flow through or fill the detection cavity (2); a light source (3) arranged in the shell (1) and located on the side away from the opening of the detection cavity (2); the light emitted by the light source (3) irradiates the water body to be detected inside the detection cavity (2); a first detection member (4) arranged in the shell (1); the first detection member (4) is configured to receive the transmitted light passing through the water body to be detected inside the detection cavity (2); a second detection member (5) arranged in the shell (1) and located on the side away from the opening of the detection cavity (2); the second detection member (5) is configured to receive the scattered light and / or fluorescent light generated by the light passing through the water body to be detected.

2. The water environment monitoring apparatus according to claim 1, characterized by The light emitted by the light source (3) at least partially irradiates the water body to be detected inside the detection cavity (2) after being transmitted downwardly and horizontally; and / or the water environment monitoring device further comprises: a first reflecting member (6) arranged in the shell (1), wherein the first reflecting member (6) is configured to receive the light emitted by the light source (3) and reflect the light in the horizontal direction to irradiate the detection cavity (2).

3. The water environment monitoring apparatus according to claim 1, characterized by The receiving end of the first detection member (4) is arranged downwardly, and the water environment monitoring device further comprises a second reflecting member (7a) arranged in the shell (1), wherein the second reflecting member (7a) is configured to receive the transmitted light passing through the water body to be detected inside the detection cavity (2) and reflect the light to the first detection member (4).

4. The water environment monitoring apparatus according to claim 2, characterized by The water environment monitoring device further comprises: a first light path element (9) and a third detection member (8) arranged in the shell (1), wherein the first light path element (9) is configured to receive the light emitted by the light source (3) and transmit part of the light to the first reflecting member (6), and the first light path element (9) is further configured to receive the light emitted by the light source (3) and reflect part of the light in the direction away from the detection cavity to serve as reference light, and the third detection member (8) is used for receiving the reference light.

5. The water environment monitoring apparatus according to claim 2, characterized by The water environment monitoring device further comprises a first light path element (9) and a second light path element (10) arranged in the shell (1), wherein the first light path element (9) is configured to receive the light emitted by the light source (3) and transmit part of the light to the first reflecting member (6), and the first light path element (9) is further configured to receive the light emitted by the light source (3) and reflect part of the light in the direction away from the detection cavity to serve as reference light; The second light path element (10) is located below the second detection member (5), and the second light path element (10) is configured to reflect at least part of the reference light to the second detection member (5); The second light path element (10) is further configured to transmit the scattered light and / or fluorescent light.

6. The water environment monitoring apparatus according to claim 5, characterized by The water environment monitoring device further comprises a third detection member (8), and the second light path element (10) is further configured to transmit part of the reference light to the third detection member (8).

7. The water environment monitoring apparatus according to claim 5, characterized by The second light path element (10) is further configured to transmit part of the reference light to the first detection member (4), and the water environment monitoring device further comprises a light path switching element (12) which switches between blocking the transmitted light passing through the inside of the detection cavity (2) from entering the first detection member (4) and blocking the reference light from entering the first detection member (4).

8. The water environment monitoring apparatus according to claim 6, characterized by The receiving end of the third detection member (8) is arranged downward, and the water environment monitoring device further comprises a second reflection member (7b) arranged below the third detection member (8), and the reference light transmitted through the second light path element (10) is configured to be reflected to the third detection member (8) through the second reflection member (7b).

9. The water environment monitoring apparatus according to any one of claims 1 to 7, characterized by, Further comprising a plurality of reflection members arranged on both sides of the detection cavity (2) along the height direction of the detection cavity (2), and the reflection members are configured to reflect the light emitted by the light source (3), and the light passes through the detection cavity (2) at least twice along the height direction of the detection cavity (2) and is received by the first detection member (4). Alternatively, a plurality of reflection members are arranged on both sides of the detection cavity (2) along the horizontal direction, and the reflection members are configured to reflect the light emitted by the light source (3), and the light passes through the detection cavity (2) at least twice along the horizontal direction and is received by the first detection member (4).

10. The water environment monitoring apparatus according to any one of claims 1 to 7, characterized by, The second detection member (5) is provided with a plurality of regions, at least part of the regions are provided with a filter film for filtering out the light directly emitted by the light source and / or interference light; and / or the water environment monitoring device further comprises a collimator (11) arranged at the light emitting end of the light source (3); and / or the light source comprises a plurality of sub-light sources with different wavelengths. The second detection member (5) is provided with a plurality of regions, at least part of the regions are provided with a filter film for filtering out the light directly emitted by the light source and / or interference light; and / or the water environment monitoring device further comprises a collimator (11) arranged at the light emitting end of the light source (3); and / or the light source comprises a plurality of sub-light sources with different wavelengths.

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