Water environment monitoring equipment
By designing water environment monitoring equipment and changing the direction of optical path propagation and the position of components, it can accurately measure even in shallow water or in scenarios with large changes in water depth. This solves the problem of inaccurate measurement caused by the optical path not being fully submerged in the water, and improves the measurement precision and accuracy.
Patent Information
- Application Number
- CN202520310107.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Existing spectral detection methods cannot fully submerge the optical path in shallow water or in scenarios with large variations in water depth, leading to inaccurate measurement results.
Design a water environment monitoring device, including a test chamber shell, a light source, a first sensor and a second sensor. The light emitted by the light source illuminates the detection area and the reference area respectively. The sensor receives the corresponding light. By changing the direction of light propagation and the position of the components, the device is made into a flat shape, and the detection area opening is set downward to ensure that the light can effectively pass through the water body.
Even in shallow water or environments with significant depth variations, it can meet the requirements for testing water levels, improve measurement accuracy, avoid interference from stray light, and enhance the accuracy of detection.
Smart Images
Figure CN223727672U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water quality detection technical field, concretely relates to a water environment monitoring equipment. BACKGROUND
[0002] The application of optical methods in water quality parameter research has been the focus of scholars at home and abroad for a long time. In particular, spectral methods have unique advantages such as high sensitivity, no need for additional reagents, and the ability to achieve online real-time monitoring, and have occupied an important position in the field of water quality detection and have been widely used. However, due to the principle, spectral detection methods based on absorption spectrum need to completely immerse the detection light path in water. For relatively deep scenes, such as rivers, drainage outlets, and tube wells, there is no problem. But for relatively shallow water bodies or scenes with large changes in water depth, the light path cannot be completely immersed in water, which will have a great impact on the actual measurement results. SUMMARY
[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defect that for relatively shallow water bodies, the light path cannot be completely immersed in water, which will have a great impact on the actual measurement results.
[0004] Therefore, the utility model provides a water environment monitoring equipment, which comprises:
[0005] A test bin shell is provided with a containing cavity inside, the bottom side of the test bin shell is provided with a recess which is recessed inward, the recess comprises a detection area, the detection area has a downward opening, the detection area is used for water to be detected to flow through or fill, and the test bin shell is also provided with a reference area which does not allow water to be detected to flow through or fill;
[0006] A light source is arranged in the containing cavity and away from one side of the opening of the detection area, and the light emitted by the light source is at least irradiated to the detection area and the reference area after downward and horizontal propagation;
[0007] A first sensor is provided with a receiving end comprising a first receiving area and a second receiving area, the first receiving area is used for receiving light passing through the detection area, and the second receiving area is used for receiving light passing through the reference area;
[0008] A second sensor is arranged in the containing cavity and above the detection area, and the second sensor is used for receiving light emitted upward after entering the detection area.
[0009] Optionally, the water environment monitoring device further comprises: a first optical path element configured to split the light emitted by the light source into test light capable of entering the detection area and reference light capable of entering the reference area; and a second optical path element configured to reflect part of the reference light to the receiving end of the second sensor; and / or the light emitted upward after entering the detection area by the second sensor comprises scattered light and / or fluorescent light.
[0010] Optionally, the first optical path element comprises a first optical lens and a second optical lens arranged along the depth direction of the detection area, and part of the light emitted by the light source is reflected by the first optical lens to form the reference light, and part of the light emitted by the light source is reflected by the second optical lens to form the test light.
[0011] Optionally, the light source and the first optical path element are arranged on the same side of the detection area; the first sensor is arranged on the other side of the detection area relative to the first optical path element; and the second sensor and the second optical path element are arranged between the first optical path element and the first sensor.
[0012] Optionally, the first receiving area and the second receiving area of the first sensor are arranged along the depth direction of the detection area, and the receiving end of the first sensor faces the light source.
[0013] Optionally, the receiving end of the first sensor faces the opening of the detection area, and the water environment monitoring device further comprises: a third optical path element configured to reflect the light passing through the detection area into the first receiving area of the first sensor; and a fourth optical path element configured to reflect the light passing through the reference area into the second receiving area of the first sensor.
[0014] Optionally, the reference area is arranged in the accommodation cavity and above the detection area; or the reference area is arranged in the recess and above the detection area.
[0015] Optionally, the water environment monitoring device further comprises a plurality of reflecting elements configured to make the light irradiated into the detection area pass through the detection area at least twice before irradiating into the first receiving area.
[0016] Optionally, the angle between the receiving end of the second sensor and the depth direction of the detection area is 45° to 135°.
[0017] Optionally, the receiving end of the first sensor further comprises an anti-crosstalk area arranged between the first receiving area and the second receiving area.
[0018] And / or, the receiving end of the second sensor comprises a light splitting film and a light filtering film from inside to outside, the light filtering film covers at least part of the light splitting film, and the light filtering film is used for filtering out light directly emitted by the light source and / or interference light;
[0019] And / or, the light source comprises a plurality of sub-light sources of different wavelengths.
[0020] The technical scheme provided by the utility model has the following advantages:
[0021] 1. The water environment monitoring equipment provided by the utility model comprises a test bin shell, a light source, a first sensor and a second sensor. The test bin shell is internally provided with a containing cavity, the bottom side of the test bin shell is provided with a recess which is recessed inward, the recess comprises a detection area, the detection area has a downward opening, the detection area is used for allowing water to be detected to flow through or fill, and the test bin shell is further provided with a reference area, the reference area does not allow water to be detected to flow through or fill; the light source is arranged in the containing cavity and on the side away from the opening of the detection area, and the light emitted by the light source is used for irradiating the detection area and the reference area after at least downward and horizontal propagation; the receiving end of the first sensor comprises a first receiving area and a second receiving area, the first receiving area is used for receiving light passing through the detection area, and the second receiving area is used for receiving light passing through the reference area; the second sensor is located in the containing cavity and above the detection area, and the second sensor is used for receiving light which is emitted upward after entering the detection area. Through the above arrangement, the entire water environment monitoring equipment is in a flat shape, and the opening of the detection area is arranged downward, the propagation direction of the light path and the arrangement position of each component are changed, even if the water body is relatively shallow, the water level can also be tested, the measurement accuracy is improved, and in addition, the opening of the detection area is arranged downward, so that stray light from the outside can be prevented from entering the detection area, and the detection accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.
[0023] Figure 1 It is a structure schematic view of the water environment monitoring equipment in embodiment 1 in the utility model;
[0024] Figure 2 It is a structure schematic view of the water environment monitoring equipment in embodiment 2 in the utility model;
[0025] Figure 3 Figure 3 is a structural schematic diagram of the water environment monitoring device in the embodiment 3 of the present application;
[0026] Figure 4 Figure 4 is a structural schematic diagram of the water environment monitoring device in the present application;
[0027] Figure 5 Figure 5 is another structural schematic diagram of the water environment monitoring device in the present application.
[0028] Explanation of reference signs:
[0029] 1 - test chamber housing; 11 - containing cavity; 12 - detection area; 13 - reference area;
[0030] 21 - light source; 22 - first light path element; 221 - first optical lens; 222 - second optical lens; 23 - second light path element; 24 - first sensor; 25 - second sensor;
[0031] 3 - third light path element;
[0032] 4 - collimating mirror;
[0033] 5 - fourth light path element;
[0034] 6 - first reflecting element;
[0035] 7 - second reflecting element. DETAILED DESCRIPTION
[0036] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0037] 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" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0038] In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation", "connection", "connect" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;It can be directly connected, also can be indirectly connected through the intermediate medium, it can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0039] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.
[0040] Example 1
[0041] The embodiment provides a kind of water environment monitoring equipment, as shown in Figure 1 It includes: test bin shell 1, light source 21, first light path element 22, first sensor 24 and second sensor 25.Test bin shell 1 is provided with containing cavity 11 inside, the bottom end (for example, central position) of test bin shell 1 is provided with inwardly recessed groove, so that the whole test bin shell 1 is inverted "concave" type, the recessed area includes detection area 12, detection area 12 opens downward, the inner side wall of detection area 12 is provided with light-transmitting part, detection area 12 is used for the water to be detected to flow through or fill (filling here is not limited to fill, as long as the test requirement is met), test bin shell 1 is also provided with reference area 13, reference area 13 does not allow the water to be detected to flow through or fill;Light source 21 is arranged in containing cavity 11 and away from the side of the opening of detection area 12, the light emitted by light source 21 at least after downward, horizontal propagation is irradiated to detection area 12 and reference area 13;The receiving end of first sensor 24 includes first receiving area and second receiving area, first receiving area is used for receiving the light passing through detection area 12, and second receiving area is used for receiving the light passing through reference area 13;Second sensor 25 is located in containing cavity 11 and above detection area 12, and second sensor 25 is used for receiving the light emitted upward after entering the detection area.By the above setting, the whole water environment monitoring equipment is flat, and the opening of the detection area is set downward, by changing the propagation direction of light path and the setting position of each component, even if the water body is relatively shallow, the test water level can be met, the measurement accuracy is improved, the water environment monitoring equipment provided by the embodiment can be used for deep water level measurement, and low water level measurement can also be met, the practicability is strong, in addition, the opening of the detection area is set downward, the stray light from outside can also be prevented from entering the detection area, and the detection accuracy is improved.
[0042] The detection area described above is not closed except the opening, and the two opposite sides are not closed, so that the water to be detected can flow in or out.
[0043] The first receiving area and the second receiving area of the first sensor 24 can simultaneously receive the light passing through the detection area 12 and the light passing through the reference area 13.
[0044] Specifically, the water environment monitoring device in the embodiment comprises a light source 21, a first light path element 22, a second light path element 23, a first sensor 24 and a second sensor 25, and the light source 21, the first light path element 22, the second light path element 23, the first sensor 24 and the second sensor 25 are all fixed on the inner wall of the accommodating cavity 11, as shown in the figure. Figure 1 Optionally, the light source 21 is provided with one, and the light source 21 is arranged on the right side of the accommodating cavity 11 and slightly above. The first light path element 22 comprises a first optical lens 221 and a second optical lens 222 which are arranged at intervals along the depth direction of the detection area 12. The first optical lens 221 and the second optical lens 222 are both arranged below the light source 21. Preferably, the setting angles of the first optical lens 221 and the second optical lens 222 are the same, so that the reflected light of the two is parallel, avoiding interference.
[0045] The depth direction of the water to be detected is the vertical direction, and the second light path element 23 is arranged on the left side of the first optical lens 221 and at the same horizontal height. The installation angle of the first optical lens 221 and the second optical lens 222 is 45°, and the installation angle of the second light path element 23 is 135°. The second sensor 25 is installed above the second light path element 23. The first sensor 24 is arranged in the accommodating cavity 11 on the left side of the detection area 12 relative to the first optical lens 221 and the second optical lens 222. The detection area in the embodiment is the area below the liquid surface of the water to be detected in the groove, and the reference area 13 is located above the detection area 12 and in the accommodating cavity 11.
[0046] When the water to be detected needs to be detected, first, the whole water environment monitoring device in the embodiment is placed in the water to be detected, the light source 21 is started, the light source 21 emits light downward, the light first propagates to the first optical lens 221, part of the light is reflected by the first optical lens 221 along the horizontal direction to the second light path element 23 to form reference light, part of the reference light is reflected upward by the second light path element 23 to the second sensor 25 after passing through the reference area 13. Another part of the reference light transmits through the second light path element 23 along the horizontal direction to pass through the reference area 13, and the second receiving area of the first sensor 24 receives the reference light. Another part of the light emitted by the light source 21 transmits through the first optical lens 221 and propagates downward along the vertical direction to the second optical lens 222, the second optical lens 222 reflects the light toward the horizontal direction to form test light, the test light passes through the right side wall of the detection area 12 through the light-transmitting part on the right side wall of the detection area 12, passes through the water to be detected in the detection area 12, and then reenters the containing cavity 11 through the light-transmitting part on the left side wall of the detection area 12, and finally propagates to the first sensor 24, the first receiving area of the first sensor 24 receives the test light.
[0047] The water to be detected emits fluorescence and scattered light upward after being irradiated by the test light; the fluorescence and the scattered light propagate upward and are received by the receiving end of the second sensor 25 after passing through the second light path element 23.
[0048] Embodiment 2
[0049] The embodiment provides a water environment monitoring device, as shown in Figure 2 Different from the embodiment 1, only part of the groove is filled with the water to be detected, that is, the lower part of the groove is filled with the water to be detected, and the upper part of the groove is not filled with the water to be detected; the water-free area and the water area are sealed and separated by a partition. The area in the groove filled with the water to be detected is the detection area 12, and the area in the groove separated from the area filled with the water to be detected by the partition is the reference area 13.
[0050] Specifically, the water environment monitoring device in the embodiment comprises a light source 21, a first light path element 22, a second light path element 23, a first sensor 24 and a second sensor 25. The first light path element 22, the second light path element 23, the first sensor 24 and the second sensor 25 are all fixed in the containing cavity 11, as shown in Figure 2As shown, the light source 21 can be provided with one or more, optionally, the light source 21 is arranged on the right side of the accommodating cavity 11 and is slightly above the first light path element 22, which includes a first optical lens 221 and a second optical lens 222 arranged along the depth direction of the detection area 12; the first optical lens 221 and the second optical lens 222 are arranged below the light source 21, and the setting angles of the first optical lens 221 and the second optical lens 222 are the same, so that the reflected light of the two is parallel, avoiding interference. The second light path element 23 is installed on the reference area 13; the installation angle of the first light path element 22 is 45°; the installation angle of the second light path element 23 is 135°. The second sensor 25 is installed above the second light path element 23. The first sensor 24 is arranged on the left side of the accommodating cavity 11 relative to the first light path element 22.
[0051] When it is necessary to detect the water to be detected, first, the water environment monitoring device in the embodiment is placed in the water to be detected, the light source 21 is started, the light source 21 emits light downward, the light first propagates to the first optical lens 221, part of the light is reflected by the first optical lens 221 and directly shines along the horizontal direction to the second light path element 23 to form reference light, part of the reference light passes through the reference area 13 in the concave groove and above the part without water to be detected, and then passes through the reference area 13 along the horizontal direction, the second detection area of the first sensor 24 receives the reference light, and part of the reference light is reflected by the second light path element 23 and shines to the second sensor 25. Another part of the light transmits through the first optical lens 221 and propagates downward along the vertical direction to the second optical lens 222, the second optical lens 222 reflects the light toward the horizontal direction to form test light, the test light passes through the right side wall of the detection area 12 through the light-transmitting part on the right side wall of the detection area 12, passes through the water to be detected in the detection area 12, and then reenters the accommodating cavity 11 through the light-transmitting part on the left side wall of the detection area 12, and finally propagates to the first sensor 24, the first detection area of the first sensor 24 receives the test light.
[0052] The water to be detected emits fluorescence and scattering light after being irradiated by the test light; the fluorescence and the scattering light propagate upward, pass through the second light path element 23, and are received by the receiving end of the second sensor 25.
[0053] Embodiment 3
[0054] The embodiment provides a water environment monitoring device, which comprises a light source 21, a first light path element 22, a second light path element 23, a first sensor 24 and a second sensor 25. Figure 3 As shown, different from the embodiment 1, the first sensor 24 in the embodiment is horizontally placed, and the receiving end of the first sensor 24 faces the opening of the detection area 12. The water environment monitoring device in the embodiment not only comprises the light source 21, the first light path element 22, the second light path element 23, the first sensor 24 and the second sensor 25; but also comprises a third light path element 3 and a fourth light path element 5.
[0055] As shown in Figure 3 The light source 21 is provided with one, one light source 21 is arranged in the right side of the accommodation cavity 11 upper, the first light path element 22 includes first optical lens 221 and second optical lens 222 arranged along the depth direction of the detection area 12; The first optical lens 221 and the second optical lens 222 are arranged below the light source 21, the setting angle of the first optical lens 221 and the second optical lens 222 is same, to make the reflected light of two parallel, avoid the interference. The second light path element 23 is installed in the accommodation cavity 11 above the groove; The installation angle of the second light path element 23 can be 135 °. The second sensor 25 is installed above the second light path element 23.
[0056] A third light path element 3 is installed in the accommodation cavity 11 relative to the second optical lens 222 on the left side of the groove. The fourth light path element 5 is arranged relative to the first optical lens 221 on the left side of the accommodation cavity 11, and the first sensor 24 is horizontally installed above the third light path element 3 and the fourth light path element 5. The installation angle of the third light path element 3 and the fourth light path element 5 can be 135 °. The third light path element 3 and the fourth light path element 5 are arranged in the horizontal direction, which prevents the light from being blocked.
[0057] The detection area in the embodiment is the area below the liquid level of the water to be detected in the groove, and the reference area 13 is located in the accommodation cavity 11 above the detection area 12. Of course, the reference area 13 can also be located in the groove.
[0058] When the water to be detected needs to be detected, first, the water environment monitoring device in the embodiment is placed in the water to be detected, the light source 21 is started, the light source 21 emits light downward, the light first propagates to the first optical lens 221, part of the light is reflected by the first optical lens 221 along the horizontal direction to the second light path element 23 to form reference light, part of the reference light is reflected upward by the second light path element 23 to the second sensor 25 after passing through the reference area 13. Another part of the reference light transmits through the second light path element 23 along the horizontal direction and passes through the right side wall of the detection area 12 after passing through the reference area 13, and then propagates to the fourth light path element 5 along the horizontal direction, and the fourth light path element 5 reflects the part of the reference light upward to the second detection area of the first sensor 24. Another part of the light emitted by the light source 3 transmits through the first optical lens 221 and propagates downward along the vertical direction to the second optical lens 222, and the second optical lens 222 reflects the light toward the horizontal direction to form test light. The test light passes through the right side wall of the detection area 12 through the light-transmitting part on the right side wall of the detection area 12, passes through the water to be detected in the detection area 12, and then reenters the containing cavity 11 through the light-transmitting part on the left side wall of the detection area 12, and finally propagates to the third light path element 3, and the third light path element 3 reflects the received test light upward to the first detection area of the first sensor 24.
[0059] The water to be detected emits fluorescence and scattered light after being irradiated by the test light; the fluorescence and the scattered light propagate upward and are received by the receiving end of the second sensor 25 after passing through the second light path element 23.
[0060] Through the above setting, the position of the first sensor 24 is changed, and the third light path element 3 and the fourth light path element 5 are added, which can prolong the light path of the reference light and the test light, and reduce the width and volume of the whole water environment monitoring device.
[0061] In any of the above embodiments, the water environment monitoring device can further comprise a collimating mirror 4 to collimate the light emitted by the light source 21. In addition, the light source 21 can comprise a plurality of sub-light sources with different wavelengths, each of which can be arranged on the upper part of the containing cavity 11, or part of which can be arranged on the upper part and part of which can be arranged on the side surface. By arranging the light path element, the light emitted by the plurality of sub-light sources converges and irradiates the first light path element 22.
[0062] The water environment monitoring device provided by any of the above embodiments further comprises a plurality of reflecting elements for making the light irradiating into the detection area 12 pass through the detection area 12 at least twice before irradiating into the first receiving area. The detection light can enter the detection area 12 multiple times, the optical path is increased, and the width of the detection area 12 is reduced.
[0063] The specific number and arrangement position of the reflecting elements can be set according to actual needs, such as Figure 4As shown, in one optional embodiment, the water environment monitoring device includes: a light source 21, a collimating lens 4, a first optical path element 22, a first reflective element 6, a second reflective element 7, a first sensor 24, and a second sensor 25. Figure 4 As shown, the light source 21 is positioned at the upper left side of the receiving cavity 11, the collimating lens 4 is positioned directly below the light source 21, the first optical path element 22 is positioned at an angle of 135°, and the first reflective element 6 is positioned at the right end of the receiving cavity 11 relative to the first optical path element 22, with an angle of 135°. The second reflective element 7 is positioned directly below the first reflective element 6, with an angle of 45°. A first sensor 24 is positioned on the left side of the receiving cavity 11 relative to the second reflective element 7, and a second sensor 25 is positioned above the detection area 12. The detection area 12 is located between the first optical path element 22 and the first reflective element 6, and between the first sensor 24 and the second reflective element 7.
[0064] When the water to be tested needs to be tested, the water environment monitoring device in this embodiment is first placed in the water to be tested, and the light source 21 is turned on. The light source 21 emits light downwards. The light first propagates to the collimating lens 4. The collimating lens 4 can focus the light and propagate it to the first optical path element 22. For the detection optical path, the first optical path element 22 reflects the vertical light into a horizontal test light. The test light passes through the left side wall of the detection area 12 to the right and contacts the water to be tested in the detection area 12. After passing through the right side wall of the detection area 12, it propagates to the first reflective element 6. The first reflective element 6 reflects the test light downwards to the second reflective element 7. The second reflective element 7 reflects the test light horizontally to the left. After passing through the right side wall of the detection area 12, it contacts the water to be tested in the detection area 12. After passing through the left side wall of the detection area 12, it propagates to the first sensor 24. The receiving end of the first sensor 24 receives the test light.
[0065] With the above settings, the water entry optical path can be increased multiple times in the depth direction of the detection area, that is, there are multiple horizontal test lights in the depth direction, which reduces the width of the detection area, thereby reducing the width and volume of the entire device.
[0066] Another alternative implementation, such as Figure 5 As shown, the water environment monitoring equipment includes: a light source 21, a collimating lens 4, a first optical path element 22, a first reflective element 6, a second reflective element 7, a third optical path element 3, a first sensor 24, and a second sensor 25.
[0067] like Figure 5As shown, when the water to be detected needs to be detected, first, the water environment monitoring device in this embodiment is placed in the water to be detected, the light source 21 is started, the light source 21 emits light downward, the light first propagates to the first light path element 22, for the detection light path, the first light path element 22 reflects the vertical light into horizontal test light, the test light contacts the water to be detected in the detection area 12 through the left side wall of the detection area 12, and then propagates to the first reflecting element 6 through the right side wall of the detection area 12, the first reflecting element 6 reflects the test light forward to the second reflecting element 7, the second reflecting element 7 reflects the test light horizontally to the left, and then propagates to the third light path element 3 through the right side wall of the detection area 12, the third light path element 3 reflects the test light upward to the first sensor 24, and the receiving end of the first sensor 24 receives the test light.
[0068] The embodiment can increase the water-incoming light path in the horizontal direction (the water surface direction) multiple times, reduce the width of the detection area, and thus reduce the width and volume of the entire device.
[0069] Optionally, the receiving ends of the second sensors 25 are all directed to the detection area 12, so that the test light can be received by the second sensors 25 through the detection area 12. Figure 1 For example, the angle between the receiving end and the depth direction of the detection area 12 is 45° to 135°, and optionally, the angle of the receiving end of the second sensor 25 is adjustable. The first light path element 22 and the second light path element 23 can be quartz pieces and can transmit light.
[0070] A crosstalk prevention area can be arranged between the first receiving area and the second receiving area of the first sensor 24 to prevent the test light and the reference light from affecting each other. Optionally, the crosstalk prevention area can be a black light-absorbing layer.
[0071] The receiving end of the second sensor 25 includes a light splitting film and a light filtering film from inside to outside, and the light filtering film covers at least part of the light splitting film, and the light filtering film is used to filter out the light directly emitted by the light source and the interference light, so as to avoid affecting the fluorescence detection. The light splitting film and the light filtering film can be formed of quantum dot materials, and the quantum dot light splitting film can be a strip structure or a mosaic structure. When the light filtering film covers the entire area of the light splitting film, the light filtering material is arranged on part of the area of the light filtering film.
[0072] It should be noted that the horizontal direction is not limited to an angle of 0° with the horizontal direction, but can also be inclined, that is, at an angle with the horizontal direction.
[0073] Obviously, the above embodiments are only examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be enumerated. The 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 utility model relates to a test chamber, which comprises: a test chamber (1) provided with a containing cavity (11) inside, the bottom side of the test chamber (1) is provided with a recess recessed inwardly, the recess comprises a detection area (12), the detection area (12) has a downward opening, the detection area (12) is used for the water to be detected to flow through or fill, the test chamber (1) is also provided with a reference area (13), the reference area (13) does not allow the water to be detected to flow through or fill; a light source (21) arranged inside the containing cavity (11) and away from the opening side of the detection area (12), the light emitted by the light source (21) at least passes through downward and horizontal propagation to irradiate the detection area (12) and the reference area (13); a first sensor (24) whose receiving end comprises a first receiving area and a second receiving area, the first receiving area is used for receiving light passing through the detection area (12), and the second receiving area is used for receiving light passing through the reference area (13); a second sensor (25) located inside the containing cavity (11) and above the detection area (12), the second sensor (25) is used for receiving light emitted upward after entering the detection area (12).
2. The water environment monitoring apparatus according to claim 1, characterized by Further comprising: a first light path element (22) and a second light path element (23), the first light path element (22) is used for dividing the light emitted by the light source (21) into test light capable of entering the detection area (12) and reference light capable of entering the reference area (13); the second light path element (23) is used for reflecting part of the reference light to the receiving end of the second sensor (25); and / or, the light emitted upward after entering the detection area (12) received by the second sensor (25) comprises scattered light and / or fluorescence.
3. The water environment monitoring apparatus according to claim 2, characterized by The first light path element (22) comprises a first optical lens (221) and a second optical lens (222) arranged at intervals along the depth direction of the detection area (12), part of the light emitted by the light source (21) is reflected by the first optical lens (221) into the reference light, and part of the light is reflected by the second optical lens (222) into the test light.
4. The water environment monitoring apparatus according to claim 2, characterized by The light source (21) and the first light path element (22) are arranged on the same side of the detection area (12); the first sensor (24) is arranged on the other side of the detection area (12) relative to the first light path element (22); the second sensor (25) and the second light path element (23) are arranged between the first light path element (22) and the first sensor (24).
5. The water environment monitoring apparatus according to claim 1, characterized by The first receiving area and the second receiving area of the first sensor (24) are arranged along the depth direction of the detection area (12), and the receiving end of the first sensor (24) faces the light source (21).
6. The water environment monitoring apparatus according to claim 1, characterized by The receiving end of the first sensor (24) is arranged towards the opening of the detection area (12), and the water environment monitoring device further comprises a third light path element (3) and a fourth light path element (5), the third light path element (3) is used for reflecting the light passing through the detection area (12) into the first receiving area of the first sensor (24), and the fourth light path element (5) is used for reflecting the light passing through the reference area (13) into the second receiving area of the first sensor (24).
7. The water environment monitoring apparatus according to claim 1, characterized by The reference area (13) is arranged in the accommodating cavity (11) and above the detection area (12), or the reference area (13) is arranged in the groove and above the detection area (12).
8. The water environment monitoring device according to any one of claims 1 to 7, characterized by, Further comprising a plurality of reflection elements for making the light irradiated into the detection area (12) at least pass through the detection area (12) twice before irradiating to the first receiving area.
9. The water environment monitoring apparatus according to any one of claims 1 to 7, characterized by, The angle between the receiving end of the second sensor (25) and the depth direction of the detection area (12) is 45° to 135°.
10. The water environment monitoring apparatus according to any one of claims 1 to 7, characterized by, The receiving end of the first sensor (24) further comprises an anti-crosstalk area arranged between the first receiving area and the second receiving area. And / or, the receiving end of the second sensor (25) comprises a light splitting film and a light filtering film from inside to outside, the light filtering film covers at least part of the light splitting film, and the light filtering film is used for filtering out the light directly emitted by the light source and / or interference light. And / or, the light source comprises a plurality of sub-light sources of different wavelengths.