Turbidity sensor structure
By using a desiccant to control humidity and a detachable housing structure in the turbidity sensor, the problems of lens fogging and suspended impurities are solved, achieving high-precision turbidity detection.
Patent Information
- Application Number
- CN202423231937.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing turbidity sensors are susceptible to changes in ambient temperature when the housing is sealed, which can cause fogging on the lens and affect light transmittance; low-range turbidity measurement is difficult to achieve; and the adhesion of suspended impurities affects detection accuracy.
Design a turbidity sensor structure that uses a desiccant to control the humidity of the light-emitting component mounting area, and allows light to enter the water body through a light-transmitting hole. A detachable housing with internal and external threaded fit is provided to ensure the stability of the light source and the cleanliness of the light path.
It improves the accuracy and reliability of turbidity measurement, prevents fog formation, reduces optical path contamination, ensures beam directness, and enhances sensor durability and detection accuracy.
Smart Images
Figure CN223692254U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a sensor technical field, concretely relates to a turbidity sensor structure. BACKGROUND
[0002] With the improvement of people's living standards, and the deepening of the relationship between drinking water and health research, people's demand for drinking water quality is also improving. Turbidity is a characteristic parameter of water optical properties, it is not only one of the important indicators to measure the degree of water quality, but also an important basis for evaluating water treatment effect, therefore, online detection of water turbidity has very important practical significance.
[0003] Due to the presence of suspended solids and other in water, the water presents a kind of opaque state, turbidity measurement is to measure the turbidity of water. When a beam of incident light into the water, due to the presence of suspended solids in water, optical scattering phenomenon appears on the suspended solids, according to the intensity of scattered light in water to determine the value of turbidity, this is the principle of turbidity measurement.
[0004] At present, the turbidity of water can be detected by scattering method, the detection principle of scattering method is that a fixed wavelength of incident light is shot into the water to be measured by using a light source, scattering occurs when the incident light irradiates the suspended particles (impurities) in the water, the more turbid the water is, the more obvious the light scattering is, the scattered light intensity is detected from the direction of 90 ° with the incident light by using silicon photocell, photoelectric receiver, photomultiplier and other photoelectric conversion devices, and the water turbidity can be detected according to the conversion relationship between the scattered light intensity and the water turbidity.
[0005] There is also a turbidity sensor for detection by scattering method in the prior art, however, the following problems exist in actual application: 1, when the shell is sealed by pouring glue, there is air in the shell, and the temperature change of the surrounding environment will cause the fog to adhere to the inner surface of the lens, the fog will affect the light transmittance of the lens, and finally affect the measured value; 2, in low range turbidity measurement, the turbidity value to be measured is low, and the requirement for light path is higher, which often leads to the failure of low range turbidity measurement; 3, in the detection process, the impurities suspended in the water to be measured will adhere to the turbidity detection position, which will affect the light intensity emitted by the light source and the receiving of scattered light by the detection control integrated circuit, thereby reducing the detection accuracy of the turbidity of the water to be measured. UTILITY MODEL CONTENTS
[0006] In view of the above problems of the prior art, the purpose of the utility model is to provide a turbidity sensor which is improved in design and structure, so as to control the humidity in the light emitting component mounting part, and ensure the measurement accuracy and reliability of the turbidity sensor.
[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme:
[0008] A turbidity sensor structure comprises a housing, a detection control integrated circuit, a photosensitive element and a light source, wherein one side of the lower end surface of the housing has an upwardly inclined detection surface; the lower part of the housing comprises a light emitting assembly mounting part and a photosensitive assembly mounting part, the light emitting assembly mounting part is used to emit a light beam to the photosensitive assembly mounting part, the light emitting assembly mounting part is provided with a cavity, the cavity is provided with multiple levels of steps from large to small from top to bottom, the light source is arranged in the multiple levels of steps, and the bottom of the multiple levels of steps is provided with a light transmission through hole corresponding to the position of the light source for the light source to emit a light beam downward, and the gap between the light transmission through hole and the light source is provided with a desiccant; the photosensitive assembly mounting part comprises a photosensitive element and a detection control integrated circuit arranged above the photosensitive element, and the light source and the photosensitive element are respectively electrically connected with the detection control integrated circuit.
[0009] When the turbidity sensor is used, the lower part of the housing is immersed in the water body to be measured, the light source of the light emitting assembly mounting part passes through the desiccant chamber through the light transmission through hole to form scattered light into the water body to be measured, the scattered light passes through the photosensitive through hole into the photosensitive assembly mounting part to the photosensitive element, and the photosensitive element transmits the sensed light signal to the detection control integrated circuit, that is, the turbidity detection of the water body to be measured is completed. However, when the turbidity detection is performed, the internal water mist of the light emitting assembly mounting part is easily caused by the environment moisture, which causes the turbidity detection result to be inaccurate, and the circuit problem and the light path pollution caused by the internal moisture, in the scheme, the desiccant is arranged between the light source and the light transmission through hole, the excess moisture in the cavity of the housing is absorbed, the humidity in the light emitting assembly mounting part is controlled, the formation of water mist and condensed water is placed, thereby protecting the light source and the circuit from the influence of moisture, and the desiccant helps to keep the light path clean and clear, reduces the light path pollution, and improves the accuracy of the turbidity measurement.
[0010] Preferably, the housing comprises a housing upper part and a housing lower part sealed and assembled; the upper end part of the housing lower part has an external thread, the housing comprises a lower end part of the housing upper part, and the part corresponding to the upper end part mounting position section of the housing lower part is provided with an internal thread, and the housing upper part and the housing lower part are sealed and assembled by thread cooperation to provide locking force.
[0011] In this way, the detachable housing structure facilitates the maintenance and repair work of the housing interior and facilitates the replacement of the desiccant, and at the same time, the internal and external thread cooperation of the upper and lower parts of the housing provides a simple and firm connection mode, thereby forming a tight seal, and when necessary, a sealing ring can be conveniently added at the thread cooperation position to prevent moisture and other pollutants from entering the housing interior, thereby improving the durability of the turbidity sensor.
[0012] Preferably, the step position corresponding to the light source has a positioning hole for fixing the light source.
[0013] Thus, the positioning hole is arranged to ensure the fixation of the light source on the step, reduce the displacement of the light source due to vibration or impact, improve the stability of the light source, and thus ensure the accuracy of the measurement result.
[0014] Preferably, the direction in which the light source emits the light beam downward and the central axis of the light transmission hole are on the same straight line.
[0015] Thus, the directivity and accuracy of the light beam are ensured, the loss and deviation of the light beam in the transmission process are reduced, and the accuracy of the turbidity detection is improved.
[0016] Preferably, a photosensitive through hole is arranged on the detection surface to allow the light beam to enter the inside of the photosensitive component mounting portion.
[0017] Thus, the photosensitive through hole is arranged to allow the light beam to directly enter the inside of the photosensitive component mounting portion, and the light beam entering the photosensitive component mounting portion is received by the photosensitive element arranged in the photosensitive component mounting portion, so as to measure the turbidity.
[0018] The technical scheme of the turbidity sensor has the following beneficial effects:
[0019] The turbidity sensor also considers the factor of the humid environment, the lens in the light path may be fogged, resulting in distortion of the detection result, so by controlling the humidity in the light path, using the desiccant to absorb moisture, the air humidity in the light path is maintained, thereby reducing the influence of the fog on the measurement accuracy; meanwhile, the turbidity sensor designed in the utility model adopts the desiccant between the light source and the light transmission hole, which can more effectively reduce the humidity around the light source, and the detachable shell makes it easier and faster to replace the desiccant while reducing the air humidity in the overall chamber, without the need for complex operations or devices, which not only makes the parallel flow guide grooves more compact, but also improves the detection accuracy of the sensor. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the drawings, in which:
[0021] Figure 1 It is a longitudinal sectional view of the turbidity sensor in the embodiment;
[0022] Figure 2 It is a top view of the lower part of the shell of the turbidity sensor in the embodiment;
[0023] The reference signs in the drawings of the specification include: 1-shell; 2-light source; 3-light transmission hole; 4-photosensitive element; 5-photosensitive through hole; 6-detection surface; 7-desiccant; 8-detection control integrated circuit; 9-positioning hole. DETAILED DESCRIPTION
[0024] The following will be further described in detail through specific embodiments:
[0025] Embodiments:
[0026] A turbidity sensor structure is disclosed in this embodiment.
[0027] As shown in Figure 1 and Figure 2 , a turbidity sensor structure includes a housing 1, a detection control integrated circuit 8, a photosensitive element 4 and a light source 2, wherein one side of the lower end surface of the housing 1 has an upwardly inclined detection surface 6; the lower part of the housing 1 includes a light emitting assembly mounting portion and a photosensitive assembly mounting portion, the light emitting assembly mounting portion is used to emit a light beam to the photosensitive assembly mounting portion, the light emitting assembly mounting portion is provided with a cavity, the cavity is provided with multiple levels of steps from large to small from top to bottom, the light source 2 is arranged in the multiple levels of steps, and the bottom of the multiple levels of steps is provided with a light transmission through hole 3 corresponding to the position of the light source 2 for the light source 2 to emit a light beam downward, and the gap between the light transmission through hole 3 and the light source 2 is provided with a desiccant 7; the photosensitive assembly mounting portion includes the photosensitive element 4 and the detection control integrated circuit 8 arranged above the photosensitive element 4, and the light source 2 and the photosensitive element 4 are respectively electrically connected with the detection control integrated circuit 8.
[0028] When using the turbidity sensor, the lower part of the housing 1 is immersed in the water body to be measured, the light source 2 of the light emitting assembly mounting portion passes through the desiccant 7 chamber through the light transmission through hole 3 to form scattered light into the water body to be measured, the scattered light is shot into the photosensitive assembly mounting portion to the photosensitive element 4 through the photosensitive through hole 5, and the photosensitive element 4 transmits the sensed light signal to the detection control integrated circuit 8, that is, the turbidity detection of the water body to be measured is completed. However, when the turbidity detection is carried out, the internal water mist of the light emitting assembly mounting portion is easily caused by the environment humidity, which leads to inaccurate turbidity detection result, and the circuit problem and light path pollution caused by internal humidity, in the scheme, the desiccant 7 is arranged between the light source 2 and the light transmission through hole 3, which absorbs the excess moisture in the cavity of the housing 1, controls the humidity inside the light emitting assembly mounting portion, and prevents the formation of water mist and condensed water, so as to protect the light source 2 and the circuit from the influence of humidity, at the same time, the desiccant 7 helps to keep the light path clean and clear, reduces the light path pollution, and improves the accuracy of turbidity measurement.
[0029] In specific embodiments, the housing 1 includes a housing upper part and a housing lower part sealed and assembled by installation; the upper end part of the housing lower part has an external thread, the lower end part of the housing upper part is provided with an internal thread corresponding to the upper end part mounting position segment of the housing lower part, and the housing upper part and the housing lower part are sealed and assembled by installation through thread cooperation to provide locking force.
[0030] In this way, the detachable shell 1 structure facilitates maintenance and repair work inside the shell 1 and facilitates replacement of the desiccant 7, and at the same time, through the internal and external thread cooperation of the upper and lower parts of the shell 1, a simple and firm connection mode is provided, thereby forming a tight seal, and when necessary, a sealing ring can also be conveniently installed at the thread cooperation position to prevent moisture and other pollutants from entering the inside of the shell 1, thereby improving the durability of the turbidity sensor.
[0031] In a specific embodiment, the positioning hole 9 is provided at the step position corresponding to the light source 2 for fixing the light source 2.
[0032] In this way, the positioning hole 9 can ensure the fixation of the light source 2 on the step, reduce the displacement of the light source 2 due to vibration or impact, improve the stability of the light source 2, and thus ensure the accuracy of the measurement results.
[0033] In a specific embodiment, the direction in which the light source 2 emits a light beam downward is on the same straight line as the central axis of the light transmission hole 3.
[0034] In this way, the directivity and accuracy of the light beam are ensured, the loss and deviation of the light beam during transmission are reduced, and the accuracy of turbidity detection is improved.
[0035] In a specific embodiment, a photosensitive through hole 5 is provided on the detection surface 6 for the light beam to enter the inside of the photosensitive component mounting part.
[0036] In this way, the photosensitive through hole 5 allows the light beam to directly enter the inside of the photosensitive component mounting part, and the entering light beam is received by the photosensitive element 4 arranged in the photosensitive component mounting part, thereby measuring the turbidity.
[0037] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail, and the ordinary technical personnel in the art knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before that date, and the ordinary technical personnel in the art can improve and implement the present scheme based on their own ability under the guidance of the present application, and some typical known structures or known methods should not be an obstacle for the ordinary technical personnel to implement the present application. It should be noted that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.
Claims
1. A turbidity sensor structure comprising a housing, a detection control integrated circuit, a light receiving element, and a light source, characterized by, The lower end surface of the shell has an upwardly inclined detection surface on one side; the lower part of the shell includes a light emitting component mounting part and a light sensing component mounting part, the light emitting component mounting part is used to emit a light beam to the light sensing component mounting part, the light emitting component mounting part is provided with a cavity, the cavity is provided with multiple levels of steps from large to small from top to bottom, the light source is arranged in the multiple levels of steps, and the bottom of the multiple levels of steps is provided with a light transmission through hole corresponding to the position of the light source for the light source to emit a light beam downward, and the gap between the light transmission through hole and the light source is provided with a desiccant; the light sensing component mounting part includes a light sensing element and a detection control integrated circuit arranged above the light sensing element, and the light source and the light sensing element are respectively electrically connected with the detection control integrated circuit.
2. The turbidity sensor structure according to claim 1, characterized in that The shell includes a shell upper part and a shell lower part sealed and assembled and installed; the upper end part of the shell lower part is provided with an external thread at the mounting position, and the corresponding part of the lower end part of the shell upper part is provided with an internal thread, and the shell upper part and the shell lower part are sealed and assembled and installed by thread cooperation to provide locking force.
3. The turbidity sensor structure according to claim 1, characterized in that The step position corresponding to the light source has a positioning hole for fixing the light source.
4. The turbidity sensor structure according to claim 1, characterized in that The direction of the light beam emitted downward by the light source and the central axis of the light transmission through hole are on the same straight line.
5. The turbidity sensor structure according to claim 1, characterized in that The detection surface is correspondingly provided with a light sensing through hole for the light beam to enter the inside of the light sensing component mounting part.