A water quality monitoring device

Abstract

The utility model relates to water quality monitoring sensor technical field, specifically disclose a water quality monitoring equipment, through reference light path real -time comparison light source signal and receiving signal, realize real -time compensation function, solve the problem of light source ageing instability, improve the detection result accuracy, through telescopic structure regulation optical path, adaptation different turbidity sample, solve wide range and high precision contradiction. In addition, optical assembly integration is used for stabilizing light path in fixed block, consider modular design simultaneously, realize quick assembly, reduce maintenance difficulty, shell seat and protection cavity strengthen protection, positioning column and connecting channel improve structural reliability, flexible sealing telescopic structure guarantee adjustment accuracy and waterproofness, small size receiving platform optimization driving force and space adaptation. The equipment has range flexibility, light source stability and environmental resistance, and significantly improves detection precision and long -term operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of water quality monitoring sensor technology, and more specifically, to a water quality monitoring device. Background Technology

[0002] Online turbidity meters are core testing equipment in water treatment, environmental monitoring, and other fields, and their measurement accuracy directly affects the reliability of water quality safety assessments. Currently, mainstream light scattering methods (such as the ISO 7072 standard) and light transmission methods for turbidity probes generally face the problem of reference drift caused by light source aging. Taking an 880nm infrared light source as an example, its output intensity exhibits an exponential decay characteristic with increasing operating time; experimental data shows that the light intensity decay rate can reach 15%-20% after 3000 hours of continuous operation. Fluctuations in ambient temperature (such as ±5℃ changes) further exacerbate the fluctuations in the quantum efficiency of the light source, leading to a periodic deviation of ±3% in the reference signal of the detection optical path. This aging effect is particularly significant in low turbidity (<1 NTU) scenarios, where the effective scattered signal is weak (typically below 10 μA), and the decrease in signal-to-noise ratio caused by light source fluctuations can amplify the measurement error to ±15%.

[0003] In existing technologies, although cuvette-type turbidimeters form a stable optical path through glass lens groups, micron-level scratches or deposits on the lens surface can cause stray light interference, leading to increased baseline offset. More critically, existing monitoring systems generally lack real-time diagnostic mechanisms for the health status of the light source, relying solely on periodic manual calibration (usually quarterly), which fails to promptly identify trends in light source degradation. Studies have shown that uncorrected light source aging can cause annual measurement data deviations to accumulate to ±25%, severely limiting the application effectiveness of equipment in critical scenarios such as drinking water safety (0.1 NTU level) and semiconductor ultrapure water (0.001 NTU level). Utility Model Content

[0004] The present invention aims to overcome at least one of the shortcomings of the prior art and provide a water quality monitoring device that achieves real-time compensation through a reference optical path, thereby solving the technical problem that the changes in light source cannot be monitored in real time in the prior art, resulting in insufficient data reliability.

[0005] The technical solution adopted by this utility model is to provide a water quality monitoring device, including a functional main body, a receiving platform on one side of the functional main body; a water guiding interval communicating with the outside is provided between the functional main body and the receiving platform; the functional main body includes a control main board and a light-emitting component, the receiving platform includes a first receiving component, the light-emitting component and the first receiving component are respectively connected to the control main board and form a detection optical path through the water guiding interval; the light-emitting component includes a light source, a beam splitter and a second receiving component; the light source and the second receiving component are connected to the control main board; the beam splitter divides the original light beam of the light source into a detection beam and a reference beam; the detection beam enters the first receiving component through the detection optical path; the reference beam enters the second receiving component.

[0006] To stabilize the optical path, the light-emitting component further includes a structural fixing block; the structural fixing block includes a horizontal reference channel and a vertical detection channel; the second receiving component is disposed on the side of the reference channel away from the detection channel; the reference channel and the detection channel are connected, and the connection point forms a first mounting position, and the beam splitting device is disposed on the first mounting position; the light source is disposed on one side of the detection channel, and a first light-transmitting device is provided on the other side of the detection channel.

[0007] To optimize the installation and rapid assembly of components in the structural fixing block, the structural fixing block further includes a main compartment and an opening block; the opening block is disposed on one side of the main compartment and forms an opening surface inclined to the main compartment, so that the side of the detection channel away from the light source is exposed; the first mounting position and the first light-transmitting device are disposed on the opening block; the light source and the reference channel are disposed on the main compartment.

[0008] To ensure structural stability and reduce maintenance errors, the functional body further includes a hollow outer shell and a first housing; the outer shell has a first opening on the side near the receiving station, and the first housing matches the first opening and is connected to the outer shell to form a sealed first mounting cavity; the first housing includes several connecting posts and a transmission window; the control motherboard and the light-emitting component are connected to the first housing through the connecting posts; the detection optical path is connected to the receiving station through the transmission window.

[0009] To further enhance functionality, the first housing is also provided with a positioning post, and the positioning post has a connecting channel inside; the connecting channel forms an exposed opening on one side of the first housing; the connecting channel is provided with a detection device for closing the exposed opening.

[0010] To prevent dirt buildup, the water quality monitoring device further includes a cleaning brush, which comprises a rod and a brush head, with the brush head located within the water guiding interval. The main functional unit is equipped with a driver that drives the cleaning brush, and the driver is connected to the control main board. One end of the rod is connected to the driver, and the other end is connected to the brush head.

[0011] To improve stability and fully protect the optical components, the first housing further includes a raised perimeter surrounding the connecting post and forming a first protective cavity within the first mounting cavity; the light-emitting component is disposed within the first protective cavity; and the surface of the light-emitting component is also provided with a clearance channel that matches the position of the connecting post.

[0012] To adapt to environments with varying turbidity, a telescopic structure is further provided between the functional main body and the receiving station; the telescopic structure contains an installation channel that connects the interior of the functional main body and the receiving station; the first receiving component is connected to the control motherboard through the installation channel.

[0013] To ensure the accuracy of adjustment and waterproofing of the process, the telescopic structure further includes a telescopic tube body and multiple position buckles; the position buckles are located on the outer surface of the receiving platform; the installation channel is a flexible sealed pipe set inside the telescopic tube body.

[0014] To ensure the structural stability of the receiving station, the receiving station further includes a hollow second shell and a base plate; the second shell is provided with a vertical receiving channel and a connecting channel; one end of the receiving channel forms a second opening on the side of the second shell near the functional main body, and a second light-transmitting device is provided on the second opening; the other end of the receiving channel is provided with a first receiving component; the receiving channel is connected to the connecting channel; the connecting channel is connected to the mounting channel.

[0015] To optimize the control of telescopic movement, the cross-section of the receiving station is further less than one-quarter of the cross-section of the functional body; the height of the receiving station is less than one-sixth of the height of the functional body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1) The water quality monitoring device provided by this utility model compares the light source signal and the received signal in real time through a reference optical path to realize the real-time compensation function, solve the problem of unstable monitoring results and decreased accuracy caused by changes in the light source, such as light source aging, and improve the accuracy of the detection results. 2) By adjusting the optical path through a telescopic structure, it can adapt to samples of different turbidity and resolve the contradiction between wide range and high precision; 3) Optical components are integrated into a fixed block to stabilize the optical path, while also taking into account the modular design to achieve rapid assembly and reduce maintenance difficulty; 4) The housing and protective cavity enhance protection, while the positioning posts and connecting channels improve structural reliability; 5) The screw drive and flexible sealed telescopic structure ensure adjustment accuracy and waterproofing, while the small-volume receiving station optimizes driving force and space adaptation.

[0017] This equipment combines range flexibility, light source stability, and environmental tolerance, significantly improving detection accuracy and long-term operational reliability to adapt to various harsh environments in industrial online monitoring, and has considerable value for promotion and application. Attached Figure Description

[0018] Figure 1 This is an overall diagram of a water quality monitoring device provided in Example 1.

[0019] Figure 2 This is an overall view of a water quality monitoring device provided in Example 1 after removing the outer casing.

[0020] Figure 3 This is an exploded view of a water quality monitoring device provided in Example 1.

[0021] Figure 4 This is a longitudinal cross-sectional view of the detection body and the epitaxial detection stage in Example 1.

[0022] Figure 5 This is an exploded view of the light-emitting component of Example 1.

[0023] Figure 6 This is an exploded view of the receiving station in Example 1.

[0024] Figure 7 The diagram shows the telescopic mechanism of Embodiment 2: a) overall diagram, b) second shell base diagram, and c) base plate diagram.

[0025] Labeling Explanation: Functional Main Body 100, Receiving Platform 200, Water Guiding Spacing 300, Telescopic Mechanism 400, Control Main Board 110, Light-Emitting Component 120, First Light-Transmitting Device 130, Housing 140, First Housing Base 150, Temperature Sensor 160, Installation Channel 170, Waterproof Connector 180, Cleaning Brush 190, First Receiving Component 210, Second Housing Base 220, Base Plate 230, Second Light-Transmitting Device 240, 10mm Optical Path Gap 410, 20mm Optical Path Gap 420, Light Source 121, Beam Splitting Device 122, Second Receiving Component 123, Reference Channel 124, Detection Channel 125, Main Chamber 126, Opening Block 127, Clearance Channel 128, Connecting Post 151, Emission Window 152, Positioning Post 153, Connecting Channel 154, Protruding Edge 155, Brush Rod Channel 156, Receiving Channel 221, Connection Channel 222. Detailed Implementation

[0026] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] Example 1 like Figures 1-4 As shown, this embodiment provides a water quality monitoring device, including a functional main body 100, with a receiving platform 200 on one side of the functional main body 100; a water guiding interval 300 communicating with the outside is provided between the functional main body 100 and the receiving platform 200; the functional main body 100 includes a control main board 110 and a light-emitting component 120; the receiving platform 200 includes a first receiving component 210; the light-emitting component 120 and the first receiving component 210 are respectively connected to the control main board 110 and form a detection optical path penetrating the water guiding interval 300; the light-emitting component 120 includes a light source 121, a beam splitter 122, and a second receiving component 123; the light source 121 and the second receiving component 123 are connected to the control main board 110; the beam splitter 122 splits the original light beam of the light source 121 into a detection beam and a reference beam; the detection beam enters the first receiving component 210 through the detection optical path; the reference beam enters the second receiving component 123.

[0028] The above solution addresses the distortion problem caused by the aging of the light source 121. The reference beam and the detection beam are generated synchronously. By comparing the differences between the two signals, the attenuation or fluctuation of the light source 121 can be quickly identified. The main board 110 is then controlled to correct the detection results in real time, eliminating system errors caused by the aging or instantaneous fluctuations of the light source 121 itself. This allows the probe to maintain extremely high stability and reliability during long-term continuous operation.

[0029] To stabilize the optical path, such as Figure 4As shown, the light-emitting component 120 further includes a structural fixing block; the structural fixing block includes a transverse reference channel 124 and a longitudinal detection channel 125; the second receiving component 123 is disposed on the side of the reference channel 124 away from the detection channel 125; the reference channel 124 and the detection channel 125 are connected, and the connection point forms a first mounting position, and the beam splitter 122 is disposed on the first mounting position; the light source 121 is disposed on one side of the detection channel 125, and a first light-transmitting device 130 is provided on the other side of the detection channel 125. The structural fixing block is integrated with the longitudinal detection channel 125 through the transverse reference channel 124, providing a rigid mounting position for the beam splitter 122, reducing optical path offset caused by environmental vibration or component displacement; the beam splitter 122 is reliably fixed, ensuring the separation accuracy of the detection / reference beam, reducing stray light interference, ensuring optical path stability and detection repeatability, which helps to reduce distortion and improve detection accuracy.

[0030] To optimize the installation and rapid assembly of components in the structural fixing block, such as Figure 5 As shown, the structural fixing block includes a main chamber 126 and an opening block 127. The opening block 127 is disposed on one side of the main chamber 126 and forms an inclined opening surface relative to the main chamber 126, so that the side of the detection channel 125 away from the light source 121 is exposed. The first mounting position and the first light-transmitting device 130 are disposed on the opening block 127. The light source 121 and the reference channel 124 are disposed on the main chamber 126. The inclined design of the opening surface of the opening block 127 facilitates the exposure of the outer side of the detection channel 125 after the opening block 127 is removed, allowing for quick deployment of the optical path. The position of the beam splitter 122 can be adjusted, the light source 121 can be replaced, or the light-transmitting device can be cleaned without disassembling the main chamber 126, simplifying the assembly process, shortening maintenance time, and reducing operational complexity.

[0031] To ensure structural stability and reduce maintenance errors, such as Figure 2 , 3As shown in Figures 4 and 6, the functional main body 100 includes a hollow outer shell 140 and a first housing 150. The outer shell 140 has a first opening on the side near the receiving station 200. The first housing 150 matches the first opening and is connected to the outer shell 140 to form a sealed first mounting cavity. The first housing 150 includes several connecting posts 151 and a transmission window 152. The control main board 110 and the light-emitting component 120 are connected to the first housing 150 via the connecting posts 151. The detection optical path is connected to the receiving station 200 via the transmission window 152. The first housing 150 serves as a unified mounting base, fixing the control main board 110 and the light-emitting component 120 via the connecting posts 151, ensuring stable relative positions of all components. The transmission window 152 seals the water-conducting gap 300 to prevent liquid intrusion. Disassembly and maintenance only require removing the first housing 150, reducing the risk of internal component exposure and minimizing calibration errors caused by maintenance.

[0032] To increase functionality, such as Figures 2-4 As shown, the first housing 150 is also provided with a positioning post 153, and the positioning post 153 has a connecting channel 154 inside; the connecting channel 154 forms an exposed opening on one side of the first housing 150; a temperature sensor 160 is provided on the connecting channel 154 to close the exposed opening. The positioning post 153 can enhance the structural strength of the first housing 150 and prevent deformation; the connecting channel 154 serves as a reliable installation channel 170, which can conceal the wiring or sensors and avoid line wear; the connecting channel 154 has a built-in detection device that can monitor internal temperature, humidity and other conditions, ensuring a stable operating environment for the optical components and indirectly improving equipment reliability.

[0033] To prevent dirt buildup, the water quality monitoring device further includes a cleaning brush 190, which comprises a rod and a brush head located within the water guiding interval. The main functional unit houses a driver for the cleaning brush 190, connected to the control main board. One end of the rod is connected to the driver, and the other end is connected to the brush head. The electrically driven cleaning brush 190 removes dirt deposited on the first and second light-transmitting devices, ensuring an unobstructed detection light path and guaranteeing detection accuracy.

[0034] To improve stability and fully protect optical components, such as Figure 4 , 5As shown, the first housing 150 includes a raised perimeter 155, which surrounds the connecting post 151 and forms a first protective cavity within the first mounting cavity. The light-emitting component 120 is disposed within the first protective cavity. The surface of the light-emitting component 120 is also provided with a clearance channel 128 that matches the position of the connecting post 151. The raised perimeter 155 forms a physical barrier to block external collisions and protect the light-emitting component 120. The clearance channel 128 allows components next to the clearance channel 128 to clamp the light-emitting component 120 with other connecting posts 151, reducing shaking, maintaining the stability of the optical system, and ensuring detection accuracy. In addition, the first housing 150 also has a reserved brush rod channel 156 for accommodating the rod of the cleaning brush 190.

[0035] To ensure the structural stability of the receiving station 200, such as Figure 6 As shown, the receiving station 200 includes a hollow second housing 220 and a base plate 230. The second housing 220 is provided with a vertical receiving channel 221 and a connecting channel 222. One end of the receiving channel 221 forms a second opening on the side of the second housing 220 near the functional body 100, and a second light-transmitting device 240 is provided on the second opening. The other end of the receiving channel 221 is provided with a first receiving component 210. The receiving channel 221 is connected to the connecting channel 222. The connecting channel 222 is connected to the mounting channel 170. The receiving channel 221 and the second light-transmitting device 240 of the second housing 220 cooperate to ensure that the light beam is stably transmitted to the first receiving component 210, forming a stable light channel. The connecting channel 222 is used to accommodate one end of the telescopic structure and is also used to lay wiring to transmit the electrical signals generated by the first receiving component 210 back to the control main board 110.

[0036] To optimize the control of scaling, such as Figure 1 , 2 As shown, the cross-section of the receiving station 200 is less than one-quarter of the cross-section of the functional body 100; the height of the receiving station 200 is less than one-sixth of the height of the functional body 100. The small size and lightweight design of the receiving station 200 can reduce the inertial drag of telescopic movement, reduce the power requirement of the driver, reduce the size of the driver, optimize the overall structure, and facilitate installation and telescopic control in narrow spaces. In addition, the lightweight design of the receiving station 200 helps to shift the center of gravity towards the functional body 100, reduce the risk of displacement caused by vibration or external forces, and improve the stability of system operation.

[0037] This embodiment also provides a method for using the water quality monitoring equipment: 1) Signal acquisition and processing: After immersing the water quality monitoring device into the water sample to be tested, the control motherboard 110 synchronously acquires the signals of the first receiving component 210 and the second receiving component 123.

[0038] 2) Compensation for light source 121: Calculate the ratio of the signal of the first receiving component 210 to the signal of the second receiving component 123. This ratio is used to compensate for fluctuations in light source 121, that is, to eliminate the influence of changes in the intensity of light source 121 (aging or fluctuations) on the measurement.

[0039] 3) Temperature Compensation: The probe of the temperature sensor 160 is installed at the bottom of the first housing 150, near the end of the connecting channel 154 close to the receiving station 200. Its metal temperature-sensing surface is in direct contact with the water sample, ensuring a fast and accurate temperature measurement response. The control motherboard 110 reads the data from the temperature sensor 160 and corrects the ratio using a temperature-turbidity compensation curve or algorithm preset in the control motherboard 110, eliminating errors introduced by water temperature changes and ultimately obtaining an accurate turbidity value.

[0040] 4) Intelligent cleaning control: The control motherboard 110 controls the cleaning brush 190 to work according to the preset strategy.

[0041] 5) Data communication: The final turbidity value, temperature value and equipment status information after processing are uploaded to the remote monitoring system or display head through the waterproof connector 180.

[0042] Example 2 The difference between this embodiment and Embodiment 1 is that it also solves the problem of adapting to water bodies with different turbidity by adjusting the optical path.

[0043] In order to adapt to environments with different turbidity, such as Figure 7 As shown, a telescopic structure 400 is provided between the functional body 100 and the receiving station 200; an installation channel 170 is provided within the telescopic structure 400, connecting the interiors of the functional body 100 and the receiving station 200; the first receiving component 210 is connected to the control motherboard 110 through the installation channel 170. The telescopic structure can adjust the distance between the functional body 100 and the receiving station 200, thereby changing the detection optical path, expanding the detection range, adapting to different turbidity sample requirements, adapting to environments with large fluctuations, and reducing distortion. For example, a short optical path should be used for high-turbidity water to reduce scattering interference, while a long optical path should be used for low-turbidity water to improve sensitivity. After widening the detection range, it is possible to accurately measure turbidity ranging from a few tenths of a tonne to several thousand tonnes, thus broadening the application scenarios.

[0044] To ensure adjustment accuracy and waterproofing, the telescopic structure includes a telescopic tube body and multiple position latches. The position latches are located on the outer surface of the receiving platform. The installation channel 170 is a flexible, sealed pipe housed within the telescopic tube body. The position latches include at least two positions, in this embodiment, a 10mm optical path position 410 and a 20mm optical path position 420. The optical path is manually adjusted by pressing the position latches. The flexible, sealed pipe seals the installation channel 170 to prevent liquid ingress, ensure safe electrical signal transmission, avoid short circuits or corrosion, and improve waterproofing performance and long-term operational reliability.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water quality monitoring device, comprising: The main functional unit has a receiving station on one side; A water-guiding partition communicating with the outside is provided between the main functional unit and the receiving station; The main functional unit includes a control motherboard and a light-emitting component. The receiving station includes a first receiving component. The light-emitting component and the first receiving component are respectively connected to the control motherboard and form a detection optical path that passes through the water-guiding interval. The light-emitting component is characterized in that it comprises: a light source, a beam-splitting device, and a second receiving component; The light source and the second receiving component are connected to the control motherboard; The beam splitter divides the original beam of the light source into a detection beam and a reference beam; The detection beam enters the first receiving component through the detection optical path; The reference beam enters the second receiving component.

2. The water quality monitoring device according to claim 1, characterized in that, The light-emitting component further includes: a structural fixing block; The structural fixing block includes: a horizontal reference channel and a vertical detection channel; The second receiving component is disposed on the side of the reference channel away from the detection channel; The reference channel and the detection channel are connected, and the connection point forms a first mounting position, and the beam splitter is mounted on the first mounting position; The light source is located on one side of the detection channel, and a first light-transmitting device is provided on the other side of the detection channel.

3. The water quality monitoring device according to claim 2, characterized in that, The structural fixing block includes: a main compartment body and an opening block; The opening block is disposed on one side of the main chamber and forms an opening surface inclined to the main chamber, so that the side of the detection channel away from the light source is exposed. The first mounting position and the first light-transmitting device are disposed on the opening block; The light source and the reference channel are located on the main body.

4. The water quality monitoring device according to claim 1, characterized in that, The main functional component includes a hollow outer shell and a first shell base; The outer casing has a first opening on the side near the receiving station, and the first housing seat matches the first opening and is connected to the outer casing to form a sealed first mounting cavity; The first housing includes several connecting posts and a launch window; The control motherboard and the light-emitting component are connected to the first housing via the connecting post; The detection optical path is connected to the receiving station through the transmission window.

5. A water quality monitoring device according to claim 4, characterized in that, The first housing is also provided with a positioning post, and the positioning post is provided with a connecting channel; The connection channel forms an exposed opening on one side of the first housing; The connection channel is equipped with a detection device to seal the exposed opening.

6. A water quality monitoring device according to claim 4, characterized in that, The first housing includes a raised perimeter, which surrounds the connecting post and forms a first protective cavity within the first mounting cavity; The light-emitting component is disposed inside the first protective cavity; The surface of the light-emitting component is also provided with a clearance channel that matches the position of the connecting post.

7. A water quality monitoring device according to any one of claims 1-6, characterized in that, A telescopic structure is provided between the main functional unit and the receiving station; The telescopic structure is provided with an installation channel, which connects the interior of the functional main body and the receiving station. The first receiving component is connected to the control motherboard through the mounting channel.

8. A water quality monitoring device according to claim 7, characterized in that, The telescopic structure includes: a telescopic tube body and multiple stop buckles; The gear position buckle is located on the outer surface of the receiving station; The installation channel is a flexible, sealed pipe installed inside the telescopic pipe body.

9. A water quality monitoring device according to claim 7, characterized in that, The receiving station includes: a hollow second shell and a base plate; The second housing is provided with a vertical receiving channel and a connecting channel; One end of the receiving channel forms a second opening on the side of the second housing near the functional body, and a second light-transmitting device is provided on the second opening; The other end of the receiving channel is provided with a first receiving component; The receiving channel is connected to the connecting channel; The connection channel is connected to the installation channel.

10. A water quality monitoring device according to claim 7, characterized in that, The cross-section of the receiving station is less than one-quarter of the cross-section of the functional main body; The height of the receiving station is less than one-sixth of the height of the main functional unit.

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