A multi-parameter on-line monitoring device for water quality of a drinking water source

Abstract

This invention discloses an online monitoring device for multiple parameters of drinking water source quality, comprising a floating platform, pontoons, an attitude adjustment mechanism, a water quality detection module, and a sampling mechanism. The pontoons are located on both sides of the bottom of the floating platform. The attitude adjustment mechanism adjusts the ballast water volume within the pontoons to change the draft and center of gravity of the floating platform. A detection chamber is provided on the floating platform, and the water quality detection module is located within the detection chamber. The sampling mechanism collects water samples at different depths and transports them to the water quality detection module for testing. The attitude adjustment mechanism can adjust the ballast water volume of the pontoons to stabilize the floating platform. The sampling mechanism, in conjunction with a lifting motor and a depth sensor, enables stratified sampling. The water quality detection module, through the combination of detection sensors and an optical camera, achieves quantitative parameter detection and image-assisted analysis of water quality, thereby improving the accuracy of the detection results. The device is reliable in overall operation and can achieve long-term unattended online monitoring.

Description

Technical Field

[0001] This invention relates to the field of water quality monitoring devices, and more particularly to an online monitoring device for multiple parameters of drinking water source quality. Background Technology

[0002] Water quality monitoring devices are monitoring equipment that integrates water sampling, water quality parameter detection, and data acquisition, using floating boats or pontoon platforms as carriers. By setting up water quality detection modules, they can continuously monitor water bodies. These devices are usually deployed in aquatic environments such as rivers, lakes, and reservoirs to monitor the water quality of water sources in real time.

[0003] In existing technologies, water quality monitoring devices collect parameters from water samples by setting up detection sensors. However, the sensor detection results are often presented in numerical form, which cannot intuitively reflect the state of the water sample and makes it difficult to determine the distribution of suspended solids, changes in turbidity, and abnormal particles in the water sample, thus affecting the comprehensive judgment of water quality. At the same time, traditional water quality monitoring devices usually use fixed sampling methods to collect water samples. There are differences in water quality between different water layers. When sampling water at a single depth, it is difficult to accurately reflect the stratification changes of the water body, thus affecting the detection results. In addition, floating platforms are prone to tilting or shaking under the influence of external factors such as water flow and waves, causing the sampling position to shift, which in turn affects the reliability of the sampling process.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an online monitoring device for multiple parameters of drinking water source quality that can perform stratified sampling, accurate water quality detection, and stable operation.

[0006] To achieve this objective, the present invention adopts the following technical solution: an online monitoring device for multiple parameters of drinking water source quality, comprising a floating platform, a buoy, an attitude adjustment mechanism, a water quality detection module, and a sampling mechanism; The pontoons are located on both sides of the bottom of the floating platform and are used to provide buoyancy support for the floating platform. The attitude adjustment mechanism is located inside the pontoons and is used to change the draft and center of gravity of the floating platform by adjusting the ballast water volume inside the pontoons. The floating platform is equipped with a testing chamber, and the water quality testing module is located in the testing chamber. The water quality testing module is used to perform multi-parameter water quality testing on the collected water samples. The sampling mechanism is located at the bottom of the floating platform and is connected to the water quality testing module to collect water samples at different depths and transport them to the water quality testing module for testing. The water quality detection module includes a liquid storage container, a detection sensor, a transparent detection chamber, an optical camera, a lens, a water pump, a return pipe, and a drain pipe assembly. The liquid storage container is used to store the water sample to be tested delivered from the sampling mechanism, and the detection sensor is located in the liquid storage container to detect the water quality parameters of the water sample. The water pump is located on the pipeline between the liquid storage container and the transparent detection cavity to transport the water sample in the liquid storage container to the transparent detection cavity. The optical camera is located outside the transparent detection cavity to collect image information of the water sample in the transparent detection cavity. The lens is located between the optical camera and the transparent detection cavity to adjust the imaging focal length of the optical camera. One end of the return pipe is connected to the transparent detection chamber, and the other end is connected to the liquid storage container, so as to return the tested water sample to the liquid storage container. The drain pipe assembly is connected to the liquid storage container, so as to discharge the tested water sample.

[0007] The above technical solution includes a controller in the online monitoring device for multiple parameters of drinking water source quality, wherein the sampling mechanism, water quality detection module and attitude adjustment mechanism are electrically connected to the controller. The controller is used to control the attitude adjustment mechanism to adjust the tilt state of the floating platform according to the changes in sampling depth and the attitude state of the floating platform during the sampling process of the sampling mechanism. The controller is also used to control the sampling mechanism to adjust the sampling depth according to the detection results of the water quality detection module, so as to achieve sampling of different water layers.

[0008] Using the above technical solution, in the online monitoring device for multiple parameters of drinking water source quality, the water quality detection module further includes a container support and a pressure sensor. The liquid storage container is located inside the container support, and the pressure sensor is located at the bottom of the liquid storage container and electrically connected to the controller. The pressure sensor is used to detect the pressure change at the bottom of the liquid storage container, and the controller is used to calculate the liquid level of the water sample in the liquid storage container based on the pressure change, and control the water inlet status of the sampling mechanism based on the liquid level.

[0009] Using the above technical solution, the sampling mechanism in the online monitoring device for multiple parameters of drinking water source quality includes a mounting shell, a water pump, a telescopic hose, a lifting motor, a sampling tube, and a filter cylinder. The mounting housing is located at the bottom of the detection chamber, and the water pump is located inside the mounting housing. Its outlet end is connected to the liquid storage container through a first pipe, and its inlet end is connected to one end of the telescopic hose through a second pipe. The other end of the telescopic hose is connected to the sampling tube. The outer wall of the sampling tube is provided with a toothed groove. The output end of the lifting motor is connected to the toothed groove through a gear. The lifting motor is used to drive the sampling tube to move up and down in the vertical direction to adjust the sampling depth of the sampling tube in the water. The filter cylinder is located at the bottom of the sampling tube. The bottom of the filter cylinder has a closed structure and is surrounded by several water inlet holes. The bottom surface of the filter tube is equipped with a depth sensor, which is electrically connected to the controller. The depth sensor is used to detect the immersion depth of the sampling tube in the water. The controller is used to control the lifting and lowering position of the sampling tube according to the detection result of the depth sensor, so as to achieve stratified sampling.

[0010] Using the above technical solution, in the online monitoring device for multiple parameters of drinking water source quality, the attitude adjustment mechanism includes an angle sensor, a housing, a ballast water chamber, a bidirectional water pump, an inlet pipe, and an outlet pipe; Both the ballast water chamber and the bidirectional water pump are located inside the housing. One end of the inlet pipe extends from the housing and communicates with the external water body, while the other end is connected to the inlet of the bidirectional water pump. One end of the outlet pipe is connected to the outlet of the bidirectional water pump, while the other end is connected to the ballast water chamber. The tilt sensor is located in the detection chamber and is electrically connected to the controller. The tilt sensor is used to detect the tilt angle of the floating platform. The controller is used to adjust the amount of water in the ballast water chamber according to the tilt angle detected by the tilt sensor, so as to change the center of gravity position of the floating platform.

[0011] Using the above technical solution, in the online monitoring device for multiple parameters of drinking water source quality, a spiral propulsion mechanism is provided on both sides of the float. The spiral propulsion mechanism includes a first propulsion unit and a second propulsion unit. The first propulsion unit and the second propulsion unit are electrically connected to the controller. The controller is used to adjust the thrust of the first propulsion unit and the second propulsion unit according to the tilt direction detected by the tilt sensor, so as to generate differential thrust on both sides of the float.

[0012] The above technical solution includes a water flow sensor in the online monitoring device for multiple parameters of drinking water source quality. The water flow sensor is located at the front end of the float and is used to detect the direction and / or velocity of the water flow. When water flow acts on one side of the floating platform, the controller controls the first propulsion unit located on the receiving side to reduce thrust, and controls the second propulsion unit on the other side to increase thrust; When the flow rate exceeds a preset threshold, the controller controls the bidirectional water pump to inject water into the ballast water chamber inside the float on the receiving side, so as to adjust the center of gravity of the floating platform.

[0013] Using the above technical solution, in the drinking water source water quality multi-parameter online monitoring device, the water quality detection module further includes a light source component. The light source component is located on the side of the transparent detection cavity away from the optical camera, and the light source component is used to illuminate the water sample in the transparent detection cavity.

[0014] Using the above technical solution, in the online monitoring device for multiple parameters of drinking water source quality, the drainage pipe group includes a first drainage pipe, a second drainage pipe, a first solenoid valve, and a second solenoid valve; The first drain pipe and the second drain pipe are respectively connected to the liquid storage container. The first drain pipe is used to discharge the tested water sample to an external water body, and the second drain pipe is used to transport the tested water sample to the sample storage container for preservation. The first solenoid valve is located on the first drain pipe, and the second solenoid valve is located on the second drain pipe.

[0015] The above-mentioned online monitoring device for multiple parameters of drinking water source quality also includes a solar power supply system, which includes solar panels and batteries. The solar panel is located on the top of the testing chamber and is used to convert solar energy into electrical energy. The battery is located inside the testing chamber. The solar panel is electrically connected to the battery and is used to supply power to the battery. The battery is electrically connected to the water quality testing module, the sampling mechanism and the attitude adjustment mechanism respectively to provide them with electrical energy.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides buoyancy support for a floating platform using pontoons. The attitude adjustment mechanism can regulate the ballast water volume according to the stress conditions, ensuring the platform remains stable under wind, waves, and currents, thus preventing large-angle tilting or capsizing. The sampling mechanism, in conjunction with a lifting motor and depth sensor, automatically adjusts the sampling depth. The water quality detection module buffers and holds water samples in a storage container. Combined with detection sensors and an optical camera, it enables dual detection of water quality parameters and image-assisted analysis, significantly improving the accuracy of water quality testing. The drainage pipe assembly prevents... To prevent cross-contamination between different batches of water samples, the propeller mechanism adjusts the position of the floating platform through differential thrust. The water flow sensor detects the water flow status and works with the controller to control the propeller mechanism and attitude adjustment mechanism. This allows the monitoring device to adjust the thrust distribution and ballast status in a timely manner according to changes in water flow direction and velocity, thereby offsetting the impact of water flow in advance. When the water flow intensifies, the center of gravity of the floating platform is adjusted synchronously, effectively preventing the floating platform from shifting its position in windy and wavey environments. This enables long-term unattended online monitoring and significantly improves the operational reliability of the monitoring device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the water quality testing module of the present invention; Figure 3 This is a schematic diagram of the water quality testing module structure of the present invention; Figure 4 This is a schematic diagram of the water quality detection module of the present invention from another perspective; Figure 5 This is a schematic diagram of the pressure sensor mounting structure of the present invention; Figure 6This is a schematic diagram of the installation structure of the sampling mechanism of the present invention; Figure 7 This is a schematic diagram of the sampling mechanism structure of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of a portion of region A in the middle; Figure 9 This is a schematic diagram of the float structure of the present invention; Figure 10 This is a schematic diagram of the attitude adjustment mechanism of the present invention. Detailed Implementation

[0020] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 10As shown, this embodiment of the invention provides an online monitoring device for multiple parameters of drinking water source quality, including a floating platform 1, pontoons 2, an attitude adjustment mechanism 3, a water quality detection module 4, and a sampling mechanism 5. The pontoons 2 are located on both sides of the bottom of the floating platform 1, providing buoyancy support. The attitude adjustment mechanism 3 is located inside the pontoons 2, and is used to change the draft and center of gravity of the floating platform 1 by adjusting the ballast water volume within the pontoons 2. When this monitoring device... When operating in the water, the buoy 2 provides buoyancy support for the floating platform 1, keeping it in a floating state. When external water flow, waves, or the sampling process disturbs the floating platform 1, the attitude adjustment mechanism 3 can adjust the left and right forces and center of gravity distribution of the floating platform 1 by changing the ballast water volume in the buoy 2. This reduces the tilt, offset, or sway of the floating platform 1, keeping it stable and preventing the sampling position from shifting due to instability during sampling. This effectively improves the detection accuracy of the monitoring device.

[0024] like Figures 1 to 5 As shown, the floating platform 1 is equipped with a detection chamber 10, and the water quality detection module 4 is located inside the detection chamber 10. The water quality detection module 4 is used to perform multi-parameter water quality detection on the collected water samples. The sampling mechanism 5 is located at the bottom of the floating platform 1 and connected to the water quality detection module 4 to collect and transport water samples from different depths to the water quality detection module 4 for detection. The water quality detection module 4 includes a storage container 41, a detection sensor 42, a transparent detection chamber 43, an optical camera 44, a lens 45, a water pump 46, a return pipe 47, and a drain pipe assembly 48. The storage container 41 is used to store the water samples to be tested transported from the sampling mechanism 5, and the detection sensor 42 is located inside the storage container 41 for detecting the water samples. The water quality parameters are determined by the following: the water pump 46 is located on the pipeline between the liquid storage container 41 and the transparent detection chamber 43 to transport the water sample in the liquid storage container 41 to the transparent detection chamber 43; the optical camera 44 is located outside the transparent detection chamber 43 to collect image information of the water sample in the transparent detection chamber 43; the lens 45 is located between the optical camera 44 and the transparent detection chamber 43 to adjust the imaging focal length of the optical camera 44; one end of the return pipe 47 is connected to the transparent detection chamber 43 and the other end is connected to the liquid storage container 41 to return the tested water sample to the liquid storage container 41; and the drain pipe assembly 48 is connected to the liquid storage container 41 to discharge the tested water sample.

[0025] In this embodiment, after the sampling mechanism 5 delivers the water sample at the target depth to the water quality detection module 4, the water sample can enter the storage container 41 for static buffering to eliminate water flow turbulence and air bubbles generated during the sampling process. At this time, the detection sensor 42 can directly contact the water sample to be tested, and can complete the quantitative detection of pH value, dissolved oxygen, turbidity, conductivity, ammonia nitrogen, etc. of the water sample to quickly obtain conventional water quality parameter data. Subsequently, the water pump 46 is started, which can deliver the water sample after static buffering in the storage container 41 to the transparent detection chamber 43. The optical camera 44 can collect real-time image information of the water sample in the chamber through the transparent cavity wall. The lens 45 located between the optical camera 44 and the transparent detection chamber 43 can flexibly adjust the imaging focal length of the optical camera 44 according to the changes in turbidity and color of the water sample, thereby ensuring that the optical camera 44 can clearly capture the distribution of suspended matter and algae in the water sample. This device integrates water quality details that traditional sensors 42 cannot identify, such as water condition, microplastic particles, and abnormal impurities. This allows for a dual combination of water quality parameter detection and image-assisted analysis, significantly improving the accuracy of water quality detection. After optical image acquisition, the water sample can be returned to the storage container 41 via the return pipe 47. This enables repeated testing of the same water sample, improving the consistency between optical image acquisition and sensor detection results. It also avoids water sample waste caused by single-test discharge. The drain pipe assembly 48 can discharge the water sample from the storage container 41 after the entire process of testing a single water sample is completed, avoiding cross-contamination between different water layers and batches of water samples. This ensures the accuracy of subsequent stratified sampling and testing results. At the same time, the tested water sample can be discharged in a targeted manner or retained for control according to monitoring needs, thereby improving the practicality and detection accuracy of this monitoring device.

[0026] Furthermore, it also includes a controller (not shown). The sampling mechanism 5, the water quality detection module 4, and the attitude adjustment mechanism 3 are electrically connected to the controller. The controller is used to control the attitude adjustment mechanism 3 to adjust the tilt state of the floating platform 1 according to the changes in sampling depth and the attitude state of the floating platform 1 during the sampling process of the sampling mechanism 5. The controller is also used to control the sampling mechanism 5 to adjust the sampling depth according to the detection results of the water quality detection module 4, so as to achieve sampling of different water layers. During the sampling operation, the controller can acquire real-time data on the sampling depth changes of the sampling mechanism 5 and the attitude status data of the floating platform 1. When the center of gravity of the floating platform 1 shifts or the platform tilts and sways due to external water flow and waves, the controller can respond and issue control commands to control the attitude adjustment mechanism 3 to adjust the tilt state of the floating platform 1 in real time, thereby keeping the floating platform 1 in a stable state and avoiding problems such as the position displacement of the sampling tube 55 or inaccurate sampling depth caused by the tilting and swaying of the floating platform 1, thus improving the stability of the sampling process. At the same time, the controller can receive the water quality test results fed back by the water quality test module 4 in real time. When abnormal fluctuations in the water quality of the current water layer are detected, or after the full test of the current water layer is completed, the controller can control the sampling mechanism 5 to adjust the sampling depth to achieve continuous testing of water bodies in different water layers. Automatic stratified sampling of the entire water layer can be achieved without manual on-site intervention, thereby solving the problem of insufficient representativeness of test results when sampling at a fixed depth and greatly improving the automation level of the monitoring device.

[0027] like Figure 5As shown, the water quality detection module 4 further includes a container support 49 and a pressure sensor 40. The liquid storage container 41 is located inside the container support 49. The pressure sensor 40 is located at the bottom of the liquid storage container 41 and is electrically connected to the controller. The pressure sensor 40 is used to detect the pressure change at the bottom of the liquid storage container 41. The controller is used to calculate the liquid level of the water sample in the liquid storage container 41 based on the pressure change and to control the water inlet state of the sampling mechanism 5 based on the liquid level. In this embodiment, the pressure sensor 40 can collect water pressure change data at the bottom of the liquid storage container 41 and transmit the detection data to the controller in real time. The controller can convert the pressure value into the liquid level height of the water sample in the liquid storage container 41 through a preset conversion formula. Compared with the traditional float ball and electrode liquid level detection methods, it can effectively avoid problems such as jamming or scaling failure of the detection component caused by suspended solids, algae and impurities in the water sample, thereby improving the service life of the equipment. At the same time, the controller can control the water intake status of the sampling mechanism 5 according to the calculated liquid level height. Specifically, when the detected liquid level is lower than the preset minimum detection liquid level, the controller can control the sampling mechanism 5 to start pumping water to ensure that the detection sensor 42 in the liquid storage container 41 can be completely submerged in the water sample. When the detected liquid level reaches the preset maximum working liquid level, the controller can control the sampling mechanism 5 to stop water intake to avoid water sample overflow.

[0028] like Figures 6 to 8 As shown, the sampling mechanism 5 further includes a mounting housing 51, a water pump 52, a telescopic hose 53, a lifting motor 54, a sampling tube 55, and a filter cartridge 56. The mounting housing 51 is located at the bottom of the detection chamber 10. The water pump 52 is located inside the mounting housing 51. Its outlet end is connected to the liquid storage container 41 through a first pipe, and its inlet end is connected to one end of the telescopic hose 53 through a second pipe. The other end of the telescopic hose 53 is connected to the sampling tube 55. The outer wall of the sampling tube 55 is provided with a toothed groove 551. The output end of the lifting motor 54 is connected to the filter cartridge 56 via a gear (not shown). The toothed groove 551 engages with the sampling tube 55, and the lifting motor 54 is used to drive the sampling tube 55 to move vertically up and down to adjust the sampling depth of the sampling tube 55 in the water. In this embodiment, when sampling is required for different water layers, the lifting motor 54 can drive the gear at the output end to rotate, so as to drive the sampling tube 55 to move vertically up and down through the gear. The lifting stroke of the sampling tube 55 can be controlled, thereby adjusting the sampling depth of the sampling tube 55 in the water. During the lifting adjustment process, the telescopic hose 53 can automatically adjust its length with the lifting action of the sampling tube 55 to solve the problem of excessive length of traditional rigid pipe connection.

[0029] like Figure 8As shown, the filter cylinder 56 is located at the bottom of the sampling tube 55. The bottom of the filter cylinder 56 has a closed structure, with several water inlet holes 561 arranged around its circumference. The closed structure at the bottom of the filter cylinder 56 can prevent the intake of sediments from the bottom, thus preventing impurities deposited at the bottom from being drawn into the sampling tube 55 and causing water sample contamination. At the same time, it can also prevent the water inlet from being blocked by mud and sand at the bottom when the sampling tube 55 descends to near the bottom. During sampling, the several water inlet holes 561 arranged around the circumference of the filter cylinder 56 can achieve 360-degree uniform water intake. Compared with the bottom water intake structure, it can reduce the disturbance to the target water layer during the sampling process and avoid the impact of water flow disturbance on the sampling results. At the same time, when some holes are temporarily blocked by impurities, the holes in other directions can still enter normally, effectively reducing the probability of the filter cylinder 56 becoming clogged, thereby improving the reliability of long-term sampling of this monitoring device.

[0030] like Figure 8 As shown, a depth sensor 57 is provided on the bottom surface of the filter cylinder 56. The depth sensor 57 is electrically connected to the controller. The depth sensor 57 is used to detect the immersion depth of the sampling tube 55 in the water. The controller is used to control the lifting position of the sampling tube 55 according to the detection result of the depth sensor 57 to achieve stratified sampling. During the sampling process, the controller can compare the preset target sampling depth with the depth data fed back by the depth sensor 57 in real time, and control the start and stop of the lifting motor 54 according to the comparison result, thereby adjusting the lifting position of the sampling tube 55 until the water intake of the sampling tube 55 reaches the preset target water layer and stops, effectively improving the positioning accuracy of the sampling depth.

[0031] like Figure 2 , Figure 9 and Figure 10As shown, the attitude adjustment mechanism 3 further includes a tilt sensor 31, a housing 32, a ballast water chamber 33, a bidirectional water pump 34, an inlet pipe 35, and an outlet pipe 36. The ballast water chamber 33 and the bidirectional water pump 34 are both located inside the housing 32. One end of the inlet pipe 35 extends from the housing 32 and communicates with the external water body, while the other end is connected to the inlet end of the bidirectional water pump 34. One end of the outlet pipe 36 is connected to the outlet end of the bidirectional water pump 34, while the other end communicates with the ballast water chamber 33. The tilt sensor 31 is located inside the detection chamber 10 and is electrically connected to the controller. The tilt sensor 31 is used to detect the tilt angle of the floating platform 1. The controller is used to adjust the water volume in the ballast water chamber 33 according to the tilt angle detected by the tilt sensor 31, so as to change the center of gravity position of the floating platform 1. During operation on water, the tilt sensor 31 can collect the tilt angle data of the floating platform 1 in real time and transmit the collected data to the controller. After receiving the detection data transmitted by the tilt sensor 31, the controller compares the tilt data with a preset horizontal attitude threshold to determine the degree of tilt and direction of offset of the floating platform 1. Subsequently, the controller sends an adjustment command to the bidirectional water pump 34 in the corresponding side float 2 for adjustment. Specifically, when it is necessary to increase the ballast weight on the corresponding side, the bidirectional water pump 34 operates in the forward direction, drawing external water through the inlet pipe 35 and then injecting the water into the ballast through the outlet pipe 36. The water volume in the ballast water chamber 33 is increased by pumping water into the ballast water chamber 33. When it is necessary to reduce the ballast weight on the corresponding side, the bidirectional water pump 34 reverses its operation to discharge the water in the ballast water chamber 33 to the external water body through the outlet pipe 36 and the inlet pipe 35, thereby reducing the water volume in the ballast water chamber 33. By changing the weight of the ballast water chamber 33 in the floats 2 on both sides of the floating platform 1, the center of gravity of the floating platform 1 is adjusted, so that the floating platform 1 always maintains a horizontal and stable attitude. This avoids problems such as inaccurate sampling depth or capsizing caused by the tilting and swaying of the floating platform 1, and effectively improves the operational stability of the floating platform 1 under wind and wave conditions.

[0032] like Figure 1 and Figure 9As shown, furthermore, the two sides of the pontoon 2 are respectively provided with a helical propulsion mechanism 21. The helical propulsion mechanism 21 includes a first propulsion unit 211 and a second propulsion unit 212. The first propulsion unit 211 and the second propulsion unit 212 are electrically connected to the controller. The controller is used to adjust the thrust of the first propulsion unit 211 and the second propulsion unit 212 according to the tilt direction detected by the tilt sensor 31, so as to generate differential thrust on both sides of the pontoon 2. The working principle of the helical propulsion mechanism 21 is that the propeller is driven to rotate at high speed by the internal drive motor to push the surrounding water to generate a reverse axial thrust. The controller can independently control the first propulsion unit 211 and the second propulsion unit 212. When the two propulsion units output different thrusts, a differential thrust will be formed on both sides of the pontoon 2. This differential thrust will form a reverse correction with the center of the floating platform 1 as the fulcrum, thereby realizing the rapid adjustment of the attitude of the floating platform 1. The difference from the ballast water attitude adjustment mechanism 3 is that the ballast water attitude adjustment mechanism 3 uses a dual The method of pumping water into the water pump 34 to change the water volume in the ballast water chamber 33 to adjust the center of gravity of the floating platform 1 has a slow response speed. In contrast, the differential thrust of the propeller mechanism 21 can be output instantaneously, which can quickly respond to short-term strong disturbances such as sudden wind waves and instantaneous rapids. In addition, the ballast water mechanism can only adjust the center of gravity distribution of the floating platform 1 in the vertical direction, while the propeller mechanism 21 can counteract the horizontal displacement caused by the water flow, preventing the device from being washed away from the preset monitoring point. At the same time, it can adjust the orientation of the floating platform 1, improving the device's anti-interference ability and operational stability in the field water environment. Furthermore, when the sampling tube 55 is operating underwater, it is easy to collide with underwater reefs, aquatic plants, debris and other obstacles, which may cause the floating platform 1 to deviate from the target water area. The propeller mechanism 21 can generate differential thrust on both sides of the float 2 to flexibly adjust the orientation and position of the floating platform 1, so that the sampling tube 55 always operates within the preset sampling area, ensuring the accuracy and safety of water sample collection.

[0033] like Figure 9As shown, it further includes a water flow sensor 22, which is located at the front end of the float 2. The water flow sensor 22 is used to detect the direction and / or velocity of the water flow. When the water flow acts on one side of the floating platform 1, the controller controls the first propulsion unit 211 located on the receiving side to reduce the thrust and controls the second propulsion unit 212 on the other side to increase the thrust. When the flow velocity exceeds a preset threshold, the controller controls the bidirectional water pump 34 to inject water into the ballast water chamber 33 in the float 2 on the receiving side to adjust the center of gravity of the floating platform 1. During operation, the water flow sensor 22 detects the water flow status of the surrounding water area. When water flow is detected acting on one side of the floating platform 1, the controller identifies the receiving side and the opposing side based on the water flow direction fed back by the water flow sensor 22. Subsequently, it controls the first propulsion unit 211 on the receiving side to reduce its thrust and controls the second propulsion unit 212 on the other side to increase its thrust, thereby forming a differential thrust on both sides of the float 2 that is opposite to the impact force of the water flow. This counteracts the impact of the water flow on the receiving side in advance, preventing the floating platform 1 from tilting or shifting horizontally under the action of the water flow. This is significantly more efficient than relying solely on the tilt sensor 31 for detection. The adjustment mode of tilting and then correcting the course can eliminate the attitude changes caused by water flow disturbance in advance, thereby improving the response speed of the attitude adjustment of the floating platform 1. When the water flow sensor 22 detects that the water flow velocity exceeds the preset threshold, the controller determines that the current water flow impact force is strong, and then sends a control command to the bidirectional water pump 34 to control the bidirectional water pump 34 to inject water into the ballast water chamber 33 in the buoy 2 on the receiving side, so as to increase the ballast weight of the buoy 2 on the receiving side, thereby adjusting the center of gravity position of the floating platform 1, so that the center of gravity of the platform shifts to the receiving side, and avoids the floating platform 1 from tilting or capsizing at a large angle under the impact of continuous strong water flow.

[0034] like Figure 3 and Figure 4 As shown, the water quality detection module 4 further includes a light source assembly 400, which is located on the side of the transparent detection cavity 43 away from the optical camera 44. The light source assembly 400 is used to illuminate the water sample inside the transparent detection cavity 43. The light source assembly 400 can provide illumination light from the back of the water sample detection area. The light can pass through the transparent detection cavity 43 and the water sample inside, providing sufficient illumination for the optical camera 44 to acquire water sample images, thereby improving the image acquisition accuracy of the optical camera 44.

[0035] like Figures 1 to 4As shown, the drainage pipe assembly 48 further includes a first drainage pipe 481, a second drainage pipe 482, a first solenoid valve 483, and a second solenoid valve 484. The first drainage pipe 481 and the second drainage pipe 482 are respectively connected to the liquid storage container 41. The first drainage pipe 481 is used to discharge the tested water sample to an external water body, and the second drainage pipe 482 is used to transport the tested water sample to a sample storage container (not shown) for sample retention. The first solenoid valve 483 is located on the first drainage pipe 481, and the second solenoid valve 484 is located on the second drainage pipe 482. This arrangement can achieve immediate discharge after routine testing, avoiding cross-contamination caused by mixing water samples from different water layers. It can also retain water samples through the second drainage pipe 482 when water quality is abnormal or when traceability is required, providing water sample evidence for subsequent retesting. It should be noted that the first drainage pipe 481 and the second drainage pipe 482 are also equipped with micro water pumps to realize the extraction of water samples.

[0036] like Figure 1 and Figure 2 As shown, the device further includes a solar power supply system 6, which comprises a solar panel 61 and a battery 62. The solar panel 61 is located on the top of the detection chamber 10 and converts solar energy into electrical energy. The battery 62 is located inside the detection chamber 10. The solar panel 61 is electrically connected to the battery 62 to supply power to the battery 62. The battery 62 is electrically connected to the water quality detection module 4, the sampling mechanism 5, and the attitude adjustment mechanism 3 to provide them with electrical energy. Placing the solar panel 61 on the top of the detection chamber 10 allows it to receive sunlight without obstruction, converting solar energy into electrical energy to power the entire device. Simultaneously, placing the battery 62 inside the detection chamber 10 prevents damage from sun exposure, rain, and moisture erosion. By electrically connecting the battery 62 to the water quality detection module 4, the sampling mechanism 5, and the attitude adjustment mechanism 3, the device can operate stably for a long time in the field environment of drinking water sources, achieving long-term unattended online monitoring and significantly improving the practicality of this monitoring device.

[0037] Components not described in detail in this article are existing technologies and will not be elaborated upon here.

[0038] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-parameter online monitoring device for drinking water source quality, characterized in that, This includes a floating platform, buoys, attitude adjustment mechanism, water quality testing module, and sampling mechanism; The pontoons are located on both sides of the bottom of the floating platform and are used to provide buoyancy support for the floating platform. The attitude adjustment mechanism is located inside the pontoons and is used to change the draft and center of gravity of the floating platform by adjusting the ballast water volume inside the pontoons. The floating platform is equipped with a testing chamber, and the water quality testing module is located in the testing chamber. The water quality testing module is used to perform multi-parameter water quality testing on the collected water samples. The sampling mechanism is located at the bottom of the floating platform and is connected to the water quality testing module to collect water samples at different depths and transport them to the water quality testing module for testing. The water quality detection module includes a liquid storage container, a detection sensor, a transparent detection chamber, an optical camera, a lens, a water pump, a return pipe, and a drain pipe assembly. The liquid storage container is used to store the water sample to be tested delivered from the sampling mechanism, and the detection sensor is located in the liquid storage container to detect the water quality parameters of the water sample. The water pump is located on the pipeline between the liquid storage container and the transparent detection cavity to transport the water sample in the liquid storage container to the transparent detection cavity. The optical camera is located outside the transparent detection cavity to collect image information of the water sample in the transparent detection cavity. The lens is located between the optical camera and the transparent detection cavity to adjust the imaging focal length of the optical camera. One end of the return pipe is connected to the transparent detection chamber, and the other end is connected to the liquid storage container, so as to return the tested water sample to the liquid storage container. The drain pipe assembly is connected to the liquid storage container, so as to discharge the tested water sample.

2. The online monitoring device for multiple parameters of drinking water source quality according to claim 1, characterized in that, It also includes a controller, and the sampling mechanism, water quality detection module and attitude adjustment mechanism are electrically connected to the controller respectively; The controller is used to control the attitude adjustment mechanism to adjust the tilt state of the floating platform according to the changes in sampling depth and the attitude state of the floating platform during the sampling process of the sampling mechanism. The controller is also used to control the sampling mechanism to adjust the sampling depth according to the detection results of the water quality detection module, so as to achieve sampling of different water layers.

3. The online monitoring device for multiple parameters of drinking water source quality according to claim 2, characterized in that, The water quality testing module also includes a container support and a pressure sensor. The liquid storage container is located inside the container support, and the pressure sensor is located at the bottom of the liquid storage container and electrically connected to the controller. The pressure sensor is used to detect pressure changes at the bottom of the liquid storage container. The controller is used to calculate the liquid level of the water sample in the liquid storage container based on the pressure changes and to control the water inlet status of the sampling mechanism based on the liquid level.

4. The online monitoring device for multiple parameters of drinking water source quality according to claim 3, characterized in that, The sampling mechanism includes a mounting housing, a water pump, a telescopic hose, a lifting motor, a sampling tube, and a water filter cylinder; The mounting housing is located at the bottom of the detection chamber, and the water pump is located inside the mounting housing. Its outlet end is connected to the liquid storage container through a first pipe, and its inlet end is connected to one end of the telescopic hose through a second pipe. The other end of the telescopic hose is connected to the sampling tube. The outer wall of the sampling tube is provided with a toothed groove. The output end of the lifting motor is connected to the toothed groove through a gear. The lifting motor is used to drive the sampling tube to move up and down in the vertical direction to adjust the sampling depth of the sampling tube in the water. The filter cylinder is located at the bottom of the sampling tube. The bottom of the filter cylinder has a closed structure and is surrounded by several water inlet holes. The bottom surface of the filter tube is equipped with a depth sensor, which is electrically connected to the controller. The depth sensor is used to detect the immersion depth of the sampling tube in the water. The controller is used to control the lifting and lowering position of the sampling tube according to the detection result of the depth sensor, so as to achieve stratified sampling.

5. The online monitoring device for multiple parameters of drinking water source quality according to claim 4, characterized in that, The attitude adjustment mechanism includes a tilt sensor, a housing, a ballast water chamber, a bidirectional water pump, an inlet pipe, and an outlet pipe; Both the ballast water chamber and the bidirectional water pump are located inside the housing. One end of the inlet pipe extends from the housing and communicates with the external water body, while the other end is connected to the inlet of the bidirectional water pump. One end of the outlet pipe is connected to the outlet of the bidirectional water pump, while the other end is connected to the ballast water chamber. The tilt sensor is located in the detection chamber and is electrically connected to the controller. The tilt sensor is used to detect the tilt angle of the floating platform. The controller is used to adjust the amount of water in the ballast water chamber according to the tilt angle detected by the tilt sensor, so as to change the center of gravity position of the floating platform.

6. The online monitoring device for multiple parameters of drinking water source quality according to claim 5, characterized in that, The pontoon is provided with a spiral propulsion mechanism on both sides. The spiral propulsion mechanism includes a first propulsion unit and a second propulsion unit. The first propulsion unit and the second propulsion unit are electrically connected to a controller. The controller is used to adjust the thrust of the first propulsion unit and the second propulsion unit according to the tilt direction detected by the tilt sensor, so as to generate differential thrust on both sides of the pontoon.

7. The online monitoring device for multiple parameters of drinking water source quality according to claim 6, characterized in that, It also includes a water flow sensor, which is located at the front end of the float and is used to detect the water flow direction and / or flow velocity. When water flow acts on one side of the floating platform, the controller controls the first propulsion unit located on the receiving side to reduce thrust, and controls the second propulsion unit on the other side to increase thrust; When the flow rate exceeds a preset threshold, the controller controls the bidirectional water pump to inject water into the ballast water chamber inside the float on the receiving side, so as to adjust the center of gravity of the floating platform.

8. The online monitoring device for multiple parameters of drinking water source quality according to claim 1, characterized in that, The water quality detection module also includes a light source assembly, which is located on the side of the transparent detection cavity away from the optical camera. The light source assembly is used to illuminate the water sample inside the transparent detection cavity.

9. The online monitoring device for multiple parameters of drinking water source quality according to claim 1, characterized in that, The drain pipe assembly includes a first drain pipe, a second drain pipe, a first solenoid valve, and a second solenoid valve. The first drain pipe and the second drain pipe are respectively connected to the liquid storage container. The first drain pipe is used to discharge the tested water sample to an external water body, and the second drain pipe is used to transport the tested water sample to the sample storage container for preservation. The first solenoid valve is located on the first drain pipe, and the second solenoid valve is located on the second drain pipe.

10. The online monitoring device for multiple parameters of drinking water source quality according to claim 1, characterized in that, It also includes a solar power supply system, which includes solar panels and batteries; The solar panel is located on the top of the testing chamber and is used to convert solar energy into electrical energy. The battery is located inside the testing chamber. The solar panel is electrically connected to the battery and is used to supply power to the battery. The battery is electrically connected to the water quality testing module, the sampling mechanism and the attitude adjustment mechanism respectively to provide them with electrical energy.

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