Water quality detection sensor

Abstract

The utility model provides a water quality detection sensor which comprises a shell, a first supporting part, a second supporting part, a light-emitting module, a receiving module and a main control module, the first supporting part, the second supporting part, the light-emitting module, the receiving module and the main control module extend upwards along the top of the shell, the first supporting part and the second supporting part are oppositely arranged to form a detection channel, and the first supporting part is provided with a first containing cavity; the second supporting part is provided with a second containing cavity, and the light-emitting module and the receiving module are arranged in the first containing cavity and the second containing cavity respectively. Wherein the main control module is in electric signal connection with the light emitting module and the receiving module; wherein a first window and a second window are arranged on the opposite side faces of the first supporting part and the second supporting part respectively, transparent pieces are arranged on the first window and the second window, and the transparent pieces are made of polytetrafluoroethylene. Self-cleaning can be effectively realized, and the window is prevented from being dirty to influence the measurement accuracy.

Description

Technical Field

[0001] The utility model relates to the field of water quality detection, in particular to a water quality detection sensor. Background Art

[0002] With the development of modern industry, the use of chemical substances in people's production and life is increasing. When chemical substances are discharged into industrial water, domestic sewage or water for emergencies, it will cause sudden changes in water quality and seriously damage the water quality ecological environment. Therefore, timely and effective monitoring of sudden changes in water quality is an urgent and important need, which can help protect water flows and then help to manage and improve the ecological environment.

[0003] Water quality testing equipment is usually placed underwater to test water quality throughout the day. While the water quality testing equipment is sinking underwater, a large amount of impurities such as microorganisms or silt will adhere to the surface through which the detection light of the water quality testing equipment passes. When there are too many impurities such as microorganisms or silt, they can block the light of the water quality testing equipment, thereby affecting the measurement accuracy of the water quality testing equipment.

[0004] Therefore, how to solve the cleaning of water quality testing equipment has become an urgent problem to be solved. Utility Model Content

[0005] A major advantage of the utility model is that it provides a water quality detection sensor, wherein the light-transmitting window of the water quality detection sensor is made of polytetrafluoroethylene material, which can effectively realize self-cleaning and prevent the window from being dirty and affecting the measurement accuracy.

[0006] According to one embodiment of the utility model, a water quality detection sensor is characterized in that it includes

[0007] a housing, a first support portion extending upward along the top of the housing, a second support portion, a light emitting module, a receiving module, and a main control module,

[0008] The first supporting part and the second supporting part are arranged opposite to each other to form a detection channel, the first supporting part has a first receiving cavity, the second supporting part has a second receiving cavity, and the light emitting module and the receiving module are respectively arranged inside the first receiving cavity and the second receiving cavity;

[0009] Wherein, the main control module is electrically connected to the light emitting module and the receiving module;

[0010] Wherein, the first supporting part and the second supporting part are provided with a first window and a second window on opposite sides thereof, and the first window and the second window are provided with transparent parts.

[0011] Wherein, the transparent part is made of polytetrafluoroethylene.

[0012] According to an embodiment of the present utility model, the first receiving cavity communicates with the cavity corresponding to the housing, and the second receiving cavity communicates with the cavity of the housing.

[0013] According to an embodiment of the present utility model, the transparent member is fixedly sealed at the first window of the first support portion and the second window of the second support portion.

[0014] According to an embodiment of the present utility model, the light-emitting module includes a light source and a first circuit board, and the light source is electrically connected and disposed on the first circuit board.

[0015] According to an embodiment of the present utility model, the light-emitting module emits optical signals of multiple bands; or, the light-emitting module emits optical signals of a specific band.

[0016] According to an embodiment of the present utility model, the receiving module includes a photosensitive chip and a second circuit board, and the photosensitive chip is attached to the second circuit board.

[0017] According to an embodiment of the present utility model, the photosensitive chip is implemented as one of a CMOS chip, a CCD chip, and a spectral chip.

[0018] According to an embodiment of the present utility model, the light-emitting module includes an ultraviolet light source and a first circuit board, and the receiving module includes a photosensitive chip that can receive optical signals in the ultraviolet band and a second circuit board.

[0019] According to an embodiment of the present utility model, it includes

[0020] a housing, a first support portion extending upward along the top of the housing, a second support portion, a light-emitting module, a receiving module, and a main control module,

[0021] wherein the first support portion and the second support portion are oppositely arranged to form a detection channel, the first support portion has a first receiving cavity, and the light-emitting module and the receiving module are disposed in the first receiving cavity;

[0022] wherein the main control module is electrically connected to the light-emitting module and the receiving module;

[0023] wherein a reflecting element is disposed on the side of the second support portion relative to the first support portion;

[0024] wherein a first window is disposed on the side of the first support portion relative to the second support portion, and a transparent member is disposed on the first window;

[0025] wherein the transparent member is made of polytetrafluoroethylene.

[0026] According to an embodiment of the present utility model, the first receiving cavity communicates with the cavity corresponding to the housing.

[0027] According to an embodiment of the present utility model, the transparent member is fixedly sealed to the first window of the first support portion.

[0028] According to an embodiment of the present utility model, the reflection element is bonded to the side surface of the second support portion; or,

[0029] a reflection film is plated on the side surface of the second support portion to form the reflection element.

[0030] According to an embodiment of the present utility model, the light-emitting module includes a light source and a common circuit board, the receiving module includes a light-sensing chip and a common circuit board, and the light source and the light-sensing chip are fixed to the common circuit board.

[0031] According to an embodiment of the present utility model, the light-emitting module includes a light source and a first circuit board, the light source is electrically connected and disposed on the first circuit board; the receiving module includes a light-sensing chip and a second circuit board, and the light-sensing chip is attached to the second circuit board.

[0032] According to an embodiment of the present utility model, the light-emitting module emits optical signals of multiple bands; or, the light-emitting module emits optical signals of a specific band.

[0033] According to an embodiment of the present utility model, the light-sensing chip is implemented as one of a CMOS chip, a CCD chip, and a spectral chip.

[0034] Through the understanding of the subsequent description and the drawings, the further objects and advantages of the present utility model will be fully embodied.

[0035] These and other objects, features, and advantages of the present utility model are fully embodied by the following detailed description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a three-dimensional schematic diagram of a water quality detection sensor according to a first preferred embodiment of the present utility model.

[0037] Figure 2 is a sectional schematic diagram of the water quality detection sensor in the x-z direction according to a first preferred embodiment of the present utility model.

[0038] Figure 3 is a sectional schematic diagram of the water quality detection sensor in the y-z direction according to a first preferred embodiment of the present utility model.

[0039] Figure 4Schematic diagram of the water quality detection sensor in the y-z direction according to the first preferred embodiment of the present utility model.

[0040] Figure 5 Schematic diagram of the water quality detection sensor from below according to the first preferred embodiment of the present utility model.

[0041] Figure 6 Schematic three-dimensional diagram of the water quality detection sensor according to the second preferred embodiment of the present utility model.

[0042] Figure 7 Schematic diagram of the water quality detection sensor in the x-z direction according to the second preferred embodiment of the present utility model.

[0043] Figure 8 Schematic diagram of the water quality detection sensor in the y-z direction according to the second preferred embodiment of the present utility model.

[0044] Figure 9 Schematic diagram of the water quality detection sensor in the y-z direction according to the second preferred embodiment of the present utility model.

[0045] Figure 10 Schematic diagram of the water quality detection sensor from below according to the second preferred embodiment of the present utility model. Detailed implementation manners

[0046] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0047] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model.

[0048] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "a" should not be construed as a limitation on the number.

[0049] Referring to the accompanying drawings of the present application Figures 1 to 5 As shown, a water quality detection sensor according to a first preferred embodiment of the present application is illustrated in the following description. The water quality detection sensor includes a housing 10, a first support portion 20 extending upward along the top of the housing, a second support portion 30, a light emitting module 40, a receiving module 50, and a main control module. The first support portion 20 and the second support portion 30 are oppositely arranged to form a detection channel 60. The first support portion 20 has a first receiving cavity 21, and the first receiving cavity 21 communicates with the corresponding cavity of the housing 10. The second support portion 30 has a second receiving cavity 31, and the second receiving cavity 31 communicates with the cavity of the housing. The light emitting module 40 and the receiving module 50 are respectively disposed inside the first receiving cavity 21 and the second receiving cavity 31. During detection, the fluid to be detected flows through the detection channel 60. The light emitting module 40 emits light, and the fluid to be detected passing through the detection channel 60 is received by the receiving module 50 to obtain spectral information, and the spectral information is analyzed to detect the fluid. In the present utility model, although the fluid detection mainly takes water quality detection as an example, it can be understood that the detection of fluids such as liquids and gases also falls within the protection scope of the present utility model.

[0050] Further, first windows 22 and second windows 32 are respectively provided on the opposite sides of the first support portion 20 and the second support portion 30. The light emitting module 40 and the receiving module 50 are arranged opposite the first windows 22 and the second windows 32. That is, after the light emitting module 40 emits light, the light enters the detection channel 40 through the first windows 22, and then is received by the receiving module 50 after passing through the second windows 32. It should be noted that in the detection of water quality or gas, the sensor needs to be placed in a liquid or gas. In order to prevent the fluid to be detected from entering the receiving cavity, the windows need to be sealed. In the prior art, quartz glass is generally provided on the windows. However, in a long-term detection environment, dirt is likely to adhere to the surface of the quartz glass, and it is not convenient to clean, which easily affects the test results. In view of this, the present utility model will provide transparent members 70 made of polytetrafluoroethylene material at the first windows 22 and the second windows 32. That is, in order to avoid the influence of dirt on the detection results, the present utility model provides transparent members made of polytetrafluoroethylene at the windows. Since polytetrafluoroethylene is a high molecular polymer composed entirely of carbon and fluorine, it has anti-dirt ability, so dirt will not adhere to the surface during use. It should be noted that the transparent members 70 should be hermetically fixed at the first windows 31 of the first support portion 20 and the second windows 32 of the second support portion 30, and the transparent members are made of polytetrafluoroethylene. Ensure that the first receiving cavity 21 and the second receiving cavity 31 will not have the fluid to be detected entering during the detection process. For example, the transparent members can be adhered to the first support portion and the second support portion by an adhesive, or can be fixed to the first support portion and the second support portion by welding or other means. In individual embodiments, they can also be integrally formed on the first support portion 20 and the second support portion 30.

[0051] Among them, the light emitting module 40 can emit optical signals of multiple bands, or can only emit optical signals of a specific band, such as only emitting optical signals in the ultraviolet band. That is, different requirements may be needed for the detection of different fluids, so the types of the corresponding light emitting modules 40 are different. Further, the light emitting module 40 includes a light source 41 and a first circuit board 42. The light source 41 is electrically connected and arranged on the first circuit board 42. That is, the light source 41 and the first circuit board 42 form an integral structure and are fixed in the first receiving cavity 21.

[0052] The receiving module 50 includes a photosensitive chip 51 and a second circuit board 52. The photosensitive chip 51 is attached to the second circuit board 52 and then fixed in the second receiving cavity 31. The photosensitive chip 51 can be implemented as a CMOS chip, a CCD chip, a spectral chip, etc.

[0053] The main control module is electrically connected to the light-emitting module 40 and the receiving module 50. The main control module is used to control the light-emitting module 40 to generate optical signals, and receive and process the optical band attenuation signals sent by the receiving module 50. Preferably, the main control module is arranged inside the cavity of the housing. In individual embodiments, the main control module can also be separately arranged outside and work through cloud control or the like.

[0054] Among them, the light-emitting module 40 can emit optical signals of multiple bands. After the optical signals pass through the fluid to be detected, there will be corresponding signal attenuation. The receiving module 50 is used to receive the attenuation signals after passing through the fluid to be detected. Preferably, the wavelength range of the optical signals is 200nm to 1200nm, that is, it covers the ultraviolet, visible light, and infrared bands.

[0055] In individual embodiments, the light-emitting module 40 can also project optical signals of a certain specific band. At this time, the receiving module 50 only receives the attenuation signals of a single band passing through the fluid to be detected.

[0056] In this embodiment, taking the emission of optical signals in the ultraviolet band as an example, the light-emitting module 40 includes an ultraviolet light source and a first circuit board, and the receiving module 50 includes a photosensitive chip that can receive optical signals in the ultraviolet band and a second circuit board.

[0057] When the water quality detection sensor is immersed in the water to be detected and in the detection state, the ultraviolet light source emits ultraviolet light. The ultraviolet light passes through the transparent member made of polytetrafluoroethylene, passes through the fluid to be detected, and then passes through the transparent member made of polytetrafluoroethylene again. The ultraviolet light will be attenuated and received by the photosensitive chip that can receive optical signals in the ultraviolet band. Then, through the data analysis module of the water quality detection sensor, the numerical values of the ultraviolet light intensity value emitted by the ultraviolet light source and the ultraviolet light intensity value received by the photosensitive chip are analyzed to calculate the water quality condition of the water to be detected. Among them, the data analysis module is electrically connected to the main control module.

[0058] Referring to the Figures 6 to 10 illustrations in the attached drawings of the present application specification, a water quality detection sensor according to the second preferred embodiment of the present application is described hereinafter. The water quality detection sensor includes a housing 10A, a first support portion 20A extending upward along the top of the housing, a second support portion 30A, a light-emitting module 40A, a receiving module 50A, and a main control module. Among them, the first support portion 20A and the second support portion 30A are oppositely arranged to form a detection channel 60A. The first support portion 20A has a first receiving cavity 21A, and the first receiving cavity 21A communicates with the corresponding cavity of the housing 10A. The light-emitting module 40A and the receiving module 50A are arranged inside the first receiving cavity 21A.

[0059] Further, a first window 22 is provided on the side of the first support portion 20A relative to the second support portion 30A. The light-emitting module 40 and the receiving module 50 are arranged opposite to the first window 22. A reflecting element 33A is provided on the side of the second support portion 30A relative to the first support portion 20A. After the light-emitting module 40A emits light, the light enters the detection channel 60A through the first window 22A, and then after being reflected by the reflecting element 33A, it is received by the receiving module 50A through the first window 22A. Among them, the reflecting element 33A can be fixed to the side of the second support portion 30A by an adhesive, for example, implemented as a mirror; it can also be a reflecting film or reflecting material plated on the side of the second support portion 30A, or can be fixed to the side of the second support portion 30A by welding or other means; in individual embodiments, the second support portion 30A directly forms a side surface with a reflecting function, that is, the corresponding material of the second support portion 30A is implemented as a reflecting material.

[0060] In this utility model, a transparent member 70A made of polytetrafluoroethylene material is provided at the first window 22A. That is, in order to avoid dirt affecting the detection result, a transparent member made of polytetrafluoroethylene is provided at the first window 22A. Since polytetrafluoroethylene is a high molecular polymer composed entirely of carbon and fluorine and has anti-dirt ability, it will not adhere to dirt on the surface during use. It should be noted that the transparent member 70A should be sealed and fixed to the first support portion 20A to ensure that the first receiving cavity 21A will not have the fluid to be detected enter during the detection process. For example, the transparent member can be adhered to the first support portion by an adhesive, or can be fixed to the first support portion by welding or other means.

[0061] In this embodiment, preferably, the light-emitting module 40A and the receiving module 50A share a circuit board, that is, the light-emitting module 40A and the receiving module 50A are integrated, and the light source 41A and the light-sensitive chip 51A are installed on the same circuit board 42A. That is, the light-emitting module 40A includes a light source 41A and a shared circuit board, the receiving module 50A includes a light-sensitive chip 51A and a shared circuit board, and the light source 41A and the light-sensitive chip 51A are respectively fixed to the shared circuit board.

[0062] The main control module is electrically connected to the light-emitting module 40A and the receiving module 50A. The main control module is used to control the light-emitting module 40A to generate an optical signal, and receive and process the optical band attenuation signal sent by the receiving module 50A. Preferably, the main control module is arranged inside the cavity of the housing. In individual embodiments, the main control module can also be separately arranged outside and work through cloud control or the like.

[0063] For a variant embodiment of the second preferred embodiment (not shown in the drawings), the difference from the second preferred embodiment is that in this variant embodiment, the light-emitting module 40A and the receiving module 50A respectively include a first circuit board 42A and a second circuit board, that is, the circuit boards are independently arranged respectively, which is the same as the first preferred embodiment. The difference from the first preferred embodiment is that both the light-emitting module and the receiving module are arranged in the first receiving cavity.

[0064] For the second preferred embodiment and its variant embodiment, this embodiment takes the example of emitting optical signals in the ultraviolet band.

[0065] When the water quality detection sensor is immersed in the water to be measured and in the detection state, the ultraviolet light source emits ultraviolet light. The ultraviolet light passes through the transparent member made of polytetrafluoroethylene, passes through the fluid to be measured, is reflected by the reflection element of the second support portion, passes through the transparent member made of polytetrafluoroethylene again, and is received by the photosensitive chip that can receive optical signals in the ultraviolet band. Then, through the data analysis module of the water quality detection sensor, the numerical values of the ultraviolet light intensity value emitted by the ultraviolet light source and the ultraviolet light intensity value received by the photosensitive chip are analyzed to calculate the water quality condition of the water to be measured.

[0066] For the components and other features not elaborated in the second preferred embodiment and its variant embodiment, they can be understood to be the same as those in the first preferred embodiment.

[0067] In the present utility model, the first circuit board, the second circuit board, and the common circuit board can be implemented as common circuit boards such as flexible boards, rigid boards, rigid-flex boards, and ceramic substrates.

[0068] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the drawings are only examples and do not limit the present utility model. The object of the present utility model has been completely and effectively achieved. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments. Without departing from the above principles, the embodiments of the present utility model can have any deformation or modification.

Claims

1. A water quality detection sensor, characterized in that: include a housing, a first support portion extending upward along the top of the housing, a second support portion, a light emitting module, a receiving module, and a main control module, The first supporting part and the second supporting part are arranged opposite to each other to form a detection channel, the first supporting part has a first receiving cavity, the second supporting part has a second receiving cavity, and the light emitting module and the receiving module are respectively arranged inside the first receiving cavity and the second receiving cavity; Wherein, the main control module is electrically connected to the light emitting module and the receiving module; The first supporting part and the second supporting part are provided with a first window and a second window on opposite sides thereof, and the first window and the second window are provided with transparent parts. Wherein, the transparent part is made of polytetrafluoroethylene.

2. The water quality detection sensor according to claim 1, wherein: The first receiving cavity is communicated with a cavity corresponding to the shell, and the second receiving cavity is communicated with the cavity of the shell.

3. The water quality detection sensor according to claim 1, wherein: The transparent member is sealingly fixed to the first window of the first supporting portion and the second window of the second supporting portion.

4. The water quality detection sensor according to claim 1, wherein: The light emitting module includes a light source and a first circuit board, and the light source is electrically connected to the first circuit board.

5. The water quality detection sensor according to claim 4, wherein: The light emitting module emits light signals of multiple wavelength bands; or, the light emitting module emits light signals of a specific wavelength band.

6. The water quality detection sensor according to claim 1, wherein: The receiving module includes a photosensitive chip and a second circuit board, and the photosensitive chip is attached to the second circuit board.

7. The water quality detection sensor according to claim 6, wherein: The photosensitive chip is implemented as one of a CMOS chip, a CCD chip, and a spectral chip.

8. The water quality detection sensor according to claim 1, wherein: The light emitting module comprises an ultraviolet light source and a first circuit board, and the receiving module comprises a photosensitive chip capable of receiving an optical signal in an ultraviolet band and a second circuit board.

9. A water quality detection sensor, characterized in that: include a housing, a first support portion extending upward along the top of the housing, a second support portion, a light emitting module, a receiving module, and a main control module, The first supporting part and the second supporting part are arranged opposite to each other to form a detection channel, the first supporting part has a first receiving cavity, and the light emitting module and the receiving module are arranged in the first receiving cavity; Wherein, the main control module is electrically connected to the light emitting module and the receiving module; Wherein, a reflective element is disposed on a side of the second supporting portion relative to the first supporting portion; Wherein, a first window is provided on a side of the first supporting portion relative to the second supporting portion, and a transparent member is provided on the first window; Wherein, the transparent part is made of polytetrafluoroethylene.

10. The water quality detection sensor according to claim 9, wherein: The first receiving cavity is connected to a cavity corresponding to the shell.

11. The water quality detection sensor according to claim 9, wherein: The transparent member is sealingly fixed to the first window of the first supporting portion.

12. The water quality detection sensor according to claim 9, wherein: The reflective element is bonded to the side surface of the second supporting portion; or, A reflective film is plated on the side surface of the second supporting portion to form the reflective element.

13. The water quality detection sensor according to claim 9, wherein: The light emitting module comprises a light source and a common circuit board, the receiving module comprises a photosensitive chip and a common circuit board, and the light source and the photosensitive chip are fixed to the common circuit board.

14. The water quality detection sensor according to claim 9, wherein: The light emitting module includes a light source and a first circuit board, and the light source is electrically connected to the first circuit board; the receiving module includes a photosensitive chip and a second circuit board, and the photosensitive chip is attached to the second circuit board.

15. The water quality detection sensor according to claim 13 or 14, wherein: The light emitting module emits light signals of multiple wavelength bands; or, the light emitting module emits light signals of a specific wavelength band.

16. The water quality detection sensor according to claim 13 or 14, wherein: The photosensitive chip is implemented as one of a CMOS chip, a CCD chip, and a spectral chip.

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