A lake plant growth environment monitoring system based on water quality detection of rivers around the lake

Abstract

The present invention relates to a lake plant growth environment monitoring system based on water quality detection of rivers around the lake, and belongs to the field of water sample detection and processing technology. The system includes a central processing unit and a sample storage container for storing water samples, as well as a digestion module and a spectrum detection module for accommodating the sample storage container. The system also includes a river sampling module for injecting river water samples into the sample storage container, a lake sampling module for injecting lake water samples into the sample storage container, a dosing module for injecting water treatment reagents into the sample storage container, and a transfer module and sewage treatment equipment for moving the sample storage container. The present invention can automatically digest and colorimetrically process river water samples and lake water samples and perform water quality analysis, and monitor the lake plant growth environment in combination with water quality detection of rivers around the lake, so as to analyze the impact of sewage in the rivers around the lake on lake plants and improve water treatment efficiency during water quality detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of water sample detection and processing, and in particular relates to a lake plant growth environment monitoring system based on water quality detection of rivers surrounding a lake. Background Art

[0002] Lake ecosystems are a vital component of biodiversity, and lake plants play a key role in maintaining water quality, providing habitats, and facilitating material circulation. Therefore, monitoring the growth environment of lake plants is crucial. This monitoring requires not only focusing on physical and chemical indicators of the water body but also comprehensively considering changes in water quality in surrounding rivers to ensure a comprehensive assessment of plant suitability.

[0003] However, the current lake plant growth environment monitoring system has some shortcomings. On the one hand, it is difficult for existing monitoring systems to automatically process and test water samples. The digestion and color development of water samples consumes manpower, making it difficult to obtain water quality data in real time. It is also difficult to harmlessly treat residual water samples and reagents after the test, which may cause pollution to the environment around the monitoring site. On the other hand, these systems fail to effectively analyze the impact of pollutants in the rivers around the lake on the lake environment, resulting in limitations in the monitoring results. In addition, existing technologies also have difficulties in comprehensively collecting water samples around various plant growth environments, affecting the accuracy and representativeness of the data. Summary of the Invention

[0004] The purpose of the present invention is to provide a lake plant growth environment monitoring system based on water quality detection of rivers around the lake in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A lake plant growth environment monitoring system based on water quality detection of rivers around a lake, comprising a sample storage vessel for storing water samples, and a digestion module and a spectral detection module for accommodating the sample storage vessel. The water samples stored in the sample storage vessel are river water samples or lake water samples, and the lake water samples originate from the lake plant growth environment. The system also comprises a river sampling module for injecting river water samples into the sample storage vessel, a lake sampling module for injecting lake water samples into the sample storage vessel, a dosing module for injecting water treatment reagents into the sample storage vessel, a transport module for moving the sample storage vessel, and sewage treatment equipment for purifying residual water in the river sampling module and the dosing module.

[0007] The sample storage vessel, digestion module, spectral detection module, river sampling module, dosing module, and transport module constitute a water quality monitoring module for rivers surrounding the lake. Each river surrounding the lake to be tested is equipped with a water quality monitoring module. The system also includes a central processing unit connected to each water quality monitoring module. The central processing unit is used to analyze the impact of water quality in the rivers surrounding the lake on the plant growth environment in the lake. During operation of the system, the water quality monitoring module of each river surrounding the lake conducts water quality testing at regular intervals. During the river water quality detection process, river water samples are extracted from the river around the lake through the river sampling module and injected into the sample storage vessel. The digestant is added to the sample storage vessel through the dosing module, and the sample storage vessel is placed in the digestion module for digestion through the transfer module. After the digestion is completed, the transfer module transfers the sample storage vessel to the dosing module, and the dosing module adds a color developer to the sample storage vessel. Then the transfer module places the sample storage vessel into the spectral detection module for river water quality detection. After a certain frequency of river water quality detection, the lake sampling module performs lake water sampling, and the water quality detection module of the river around the lake performs lake water quality detection on the water samples obtained by the lake sampling module. The water quality detection module of the river around the lake sends the results of the river water quality detection and the lake water quality detection to the central processing unit, so that the central processing unit can monitor the lake plant growth environment in combination with the water quality detection of the river around the lake.

[0008] As a further optimization scheme of the present invention, the river sampling module includes a first water pump, a sampling tube connected to the water inlet of the first water pump, and a first three-way valve having one port connected to the water outlet of the first water pump. The other two ports of the first three-way valve are used to input a quantitative river water sample into the sample storage vessel and discharge excess river water sample.

[0009] As a further optimization scheme of the present invention, the dosing module includes a second water pump, a multi-way pipe connected to the water inlet of the second water pump, multiple valves provided on the multi-way pipe, and a second three-way valve with one port connected to the water outlet of the second water pump. The multi-way pipe is used to transport water treatment reagents to the second water pump, one of the valves is connected to the water tank, and the remaining valves are connected to different water treatment reagent containers. The other two ports of the second three-way valve are respectively used to input a quantitative water treatment reagent into the sample storage vessel and discharge excess water treatment reagents. The water treatment reagents include a digester and a color developer.

[0010] As a further optimization solution of the present invention, the dosing module also includes a slide rail, a mounting plate slidingly arranged on the inner side of the slide rail, and a driving member for driving the mounting plate to move linearly back and forth, and the mounting plate is used to fill the sample storage vessel.

[0011] As a further optimization scheme of the present invention, the lake sampling module includes a drone body, a hoisting mechanism fixed to the bottom of the drone body, an assembly rack fixed to the output end of the hoisting mechanism, multiple rows of samplers fixed to the bottom of the assembly rack, and a sealing assembly for closing the sampler inlet ports, and the sealing assembly is also used to open the sampler inlet ports of the corresponding rows at different water levels.

[0012] As a further optimization scheme of the present invention, the hoisting mechanism includes a carrier plate, two winches and two fixed pulleys symmetrically arranged on both sides of the carrier plate, and two speed measuring components. The ropes of the two winches are respectively passed around the two fixed pulleys and connected to both sides of the assembly frame. The speed measuring components are used to detect the rotational speed of the fixed pulley.

[0013] As a further optimization scheme of the present invention, the hoisting mechanism also includes guide wheels symmetrically arranged on both sides of the carrier plate. The rope of the winch passes through the carrier plate and successively passes around the guide wheels and the fixed pulley before being connected to the assembly frame. The guide wheels are used to reduce the friction between the rope of the winch and the carrier plate and increase the contact area between the rope and the fixed pulley.

[0014] As a further optimization scheme of the present invention, the sampler includes a sample feeding dish and a sample loading tube arranged at the bottom of the sample feeding dish, the sample loading tube can be extended into the sample storage vessel, and the bottom of the side wall of the sample loading tube is provided with a sample outlet, and a sample sealing cylinder is slidingly provided on the outside of the sample loading tube, and the bottom of the sample sealing cylinder protrudes outward to form a pressure plate, and the pressure plate is elastically connected to the sample loading tube or the sample feeding dish.

[0015] As a further optimization solution of the present invention, the assembly rack includes a frame and a perforated plate fixed to the bottom of the frame, a positioning column is fixed to the top of the frame, and a positioning tube corresponding to the positioning column is fixed to the bottom of the carrier plate.

[0016] As a further optimization scheme of the present invention, the sealing assembly includes a cover plate slidingly arranged on the inner side of the frame and a power component fixed on the top of the frame. The power component is used to drive the cover plate to move back and forth in a straight line. A row of through holes is provided on the cover plate, and the sampling ports of each row of samplers can be connected to the through holes on the cover plate.

[0017] The beneficial effects of the present invention are:

[0018] 1) The present invention uses a water quality detection module for rivers around the lake to detect water quality. During the detection process, the water sample can be automatically digested and color-treated. After the river water sample is added to the cuvette and the water treatment reagent is added to the cuvette, the river sampling module and the dosing module respectively discharge the residual water into the sewage treatment equipment. This can avoid the mutual influence between different water samples and different reagents, improve the accuracy of water quality detection, and avoid water sample detection causing pollution to the environment;

[0019] 2) After the present invention performs river water quality testing at a certain frequency, the lake sampling module extracts a batch of water samples from the lake plant growth environment, and the surrounding river water quality testing module performs lake water quality testing on the water samples, thereby enabling the central processing unit to monitor the lake plant growth environment in combination with the surrounding river water quality testing, and analyze the impact of sewage in the surrounding river on lake plants. The system can automatically process and analyze water samples in the surrounding river and lake, thereby improving water treatment efficiency during water quality testing;

[0020] 3) The present invention obtains lake water samples by carrying samplers on a drone body. During the sampling process, the drone body carries multiple rows of samplers to a detection site, seals the sampler inlets through a sealing component, and lowers the assembly rack through a lifting mechanism to allow the samplers to reach a detection point in the lake. The sealing component opens the sampler inlets of a row of samplers to sample a detection point. Subsequently, the above process can be used to sample other water bodies at different depths. This can adapt to different plant growth areas and improve the accuracy of plant growth environment analysis.

[0021] 4) The present invention adjusts the height of the sampler through a hoisting mechanism. The hoisting mechanism includes a pair of winches, fixed pulleys, guide wheels, and a speed measuring component. The guide wheels are used to reduce the friction between the rope of the winch and the carrier plate and increase the contact area between the rope and the fixed pulley. During the hoisting and lifting assembly process, the speed of the fixed pulleys is detected by two speed measuring modules. The speed of one fixed pulley is used as a reference to adjust the winch corresponding to the other fixed pulley, ensuring that the lengths of the ropes released by the two winches are consistent, thereby improving the working stability when moving the sampler during the sampling process.

[0022] 5) The present invention seals the sample outlet of the sample tube of the sampler through a sample sealing cylinder, and the sample tube is embedded in the cuvette by the vertical drop of the drone body. The pressure plate and the sample sealing cylinder slide relative to the sample tube under the blocking action of the assembly plate and the vessel bracket, thereby opening the sample outlet and realizing the sampling of lake water samples. During the sampling process, the cuvette can be prevented from being compressed and damaged, and the rotation of the assembly frame and the sampler is constrained by the symmetrical structure of the hanging mechanism during sampling, so that the positioning tube can cooperate with the positioning column to position the sampler, thereby ensuring the degree of automation and stability of the lake water sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 It is a structural diagram of the lake sampling module of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the hanging mechanism of the present invention;

[0027] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0028] Figure 6 This is a schematic diagram of the working state of the lake sampling module of the present invention when sampling;

[0029] Figure 7 It is a schematic diagram of the disassembled structure of the assembly rack and the sealing component of the present invention.

[0030] In the figure: 1. Sample storage vessel; 2. Digestion module; 3. Spectral detection module; 4. River sampling module; 5. Lake sampling module; 6. Dosing module; 7. Transfer module; 8. Vessel holder; 9. UAV carrier; 11. Assembly plate; 12. Cuvette; 41. First water pump; 42. Sampling tube; 43. First three-way valve; 51. UAV body; 52. Hoisting mechanism; 53. Assembly frame; 54. Sampler; 55. Sealing assembly; 521. Carrier plate; 522. Winch; 523. Fixed pulley; 524, speed measuring component; 525, guide wheel; 526, positioning tube; 531, frame; 532, orifice plate; 533, positioning column; 541, sample injection dish; 542, sample loading tube; 543, sample outlet; 544, sample sealing cylinder; 545, pressure plate; 551, cover plate; 552, power component; 61, second water pump; 62, multi-way pipe; 63, valve; 64, second three-way valve; 65, slide rail; 66, mounting plate; 67, driving part; W, water tank; S, sewage treatment equipment. DETAILED DESCRIPTION

[0031] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0032] Example

[0033] like Figure 1 and Figure 2As shown, this embodiment relates to a lake plant growth environment monitoring system based on water quality detection of rivers around the lake. The system includes a central processing unit, and multiple water quality detection modules of rivers around the lake connected to the central processing unit. The multiple water quality detection modules of rivers around the lake correspond one to one to multiple rivers around the lake to be tested. In this embodiment, the water quality detection module of rivers around the lake is set at the estuary of the rivers around the lake to obtain the pollutant input of the rivers around the lake to the lake to be tested. The water quality detection module of rivers around the lake includes a sample storage container 1 for storing water samples, and a digestion module 2 and a spectral detection module 3 for accommodating the sample storage container 1. The water sample stored in the sample storage container 1 is a river water sample or a lake water sample, and the lake water sample comes from the lake plant growth environment.

[0034] The water quality detection module for the river around the lake also includes a river sampling module 4 for injecting river water samples into the sample storage vessel 1, a dosing module 6 for injecting water treatment reagents into the sample storage vessel 1, and a transfer module 7 for moving the sample storage vessel 1 between the digestion module 2, the spectral detection module 3, the river sampling module 4 and the dosing module 6. The system also has a lake sampling module 5 for injecting lake water samples into the sample storage vessel 1, and a sewage treatment device S for purifying the residual water in the river sampling module 4 and the dosing module 6. In this embodiment, a lake sampling module 5 is provided on one side of each water quality detection module for the river around the lake. The lake sampling module 5 is a drone sampling mechanism. After the water quality detection module for the river around the lake conducts a certain number of river water quality tests, it goes to the lake to be tested to collect water samples from the plant growth environment, so that the system can conduct timely analysis of the relationship between pollutants in the river around the lake and the plant growth environment.

[0035] During the river water quality detection process, river water samples are extracted from the river around the lake through the river sampling module 4, and the river water samples are injected into the sample storage vessel 1, and the digester is added to the sample storage vessel through the dosing module 6. The sample storage vessel 1 is placed in the digestion module 2 for digestion through the transfer module 7. After the digestion is completed, the transfer module 7 transfers the sample storage vessel 1 to the dosing module 6, and then the dosing module 6 adds a color developer to the sample storage vessel 1. Then the transfer module 7 places the sample storage vessel 1 into the spectral detection module 3 for river water quality detection.

[0036] In a monitoring cycle, the water quality detection module of the river channel around the lake conducts river water quality detection at a certain frequency. In the later stage of the monitoring cycle, that is, after the river water quality detection has been conducted at a certain frequency, the lake sampling module 5 performs lake water sampling, and the water quality detection module of the river channel around the lake conducts lake water quality detection on the water samples obtained by the lake sampling module 5. The process of lake water quality detection is the same as that of river water quality detection. After the lake water quality detection is completed, the water quality detection module of the river channel around the lake sends the lake water quality detection results and the river water quality detection results within the monitoring cycle to the central processing unit. The central processing unit analyzes the pollutant input of the river channel around the lake to the lake to be tested based on the detection results of the river water quality detection within the detection cycle, and analyzes the impact of pollutants entering the lake estuary on the plant growth environment in combination with the detection results of the lake water quality detection.

[0037] Specifically, if Figure 2 As shown, the sample storage vessel 1 includes an assembly plate 11 and a plurality of cuvettes 12 extending through the assembly plate 11. The assembly plate 11 is fixed to the top of the cuvettes 12. The river sampling module 4 includes a first water pump 41, a sampling tube 42 connected to the water inlet of the first water pump 41, and a first three-way valve 43 having one port connected to the water outlet of the first water pump 41. The other two ports of the first three-way valve 43 are used to input a fixed amount of river water sample into the sample storage vessel 1 and to discharge excess river water sample. The dosing module 6 includes a second water pump 61, a multi-way pipe 62 connected to the water inlet of the second water pump 61, multiple valves 63 provided on the multi-way pipe 62, and a second three-way valve 64 with one port connected to the water outlet of the second water pump 61. The multi-way pipe is used to transport water treatment reagents to the second water pump, one of the valves 63 is connected to the water tank W, and the other valves 63 are connected to different water treatment reagent containers, which are not shown in the figure. The other two ports of the second three-way valve 64 are used to input a certain amount of water treatment reagents into the sample storage vessel 1 and discharge excess water treatment reagents, respectively. The water treatment reagents include a digester and a developer. The multi-way pipe 62 is strip-shaped as a whole. The valve 63 connected to the water tank W is provided at one end of the multi-way pipe 62 in the longitudinal direction. The other valves 63 are provided on the side of the multi-way pipe 62. The water inlet of the second water pump 61 is connected to the other end of the multi-way pipe 62 in the longitudinal direction. The staff regularly replenishes the water tank W and regularly adds water treatment reagents to the water treatment reagent containers. A sewage treatment facility S is provided on one side of the spectral detection module 3. The upper ends of the first three-way valve 43 and the second three-way valve 64 are both connected to the water inlet of the sewage treatment facility S. Furthermore, a water inlet channel (not shown) is provided on the side of the water inlet of the sewage treatment facility S. After the water sample is tested, the water sample in the cuvette is poured into the water inlet channel via the transfer module 7, thereby being processed by the sewage treatment facility S.

[0038] The dosing module 6 also includes a slide rail 65, a mounting plate 66 slidably arranged on the inner side of the slide rail 65, and a drive member 67 for driving the mounting plate 66 to move back and forth linearly. The mounting plate 66 is used to load the sample storage vessel 1. The spectrum detection module 3 includes a spectrometer and a spectrometer cover opening assembly. The cover opening assembly is preferably a mounting frame and an electric push rod hinged on the mounting frame, and the output end of the electric push rod is hinged to the upper cover of the spectrometer. The digestion module 2 includes a digester and a digester cover opening assembly. The digester cover opening assembly has the same structure as the spectrometer cover opening assembly. When the sample storage vessel 1 is placed in the spectrum detection module 3, the spectrum detection module 3 can be opened by the spectrometer cover opening assembly. Similarly, when the sample storage vessel 1 is placed in the digestion module 2, the digestion module 2 can be opened by the digester cover opening assembly. In addition, in other embodiments, the above-mentioned cover opening assembly can also be replaced with other drive structures, as long as the drive structure can drive the spectrometer and the upper cover of the digester to open.

[0039] The specific process of each river water quality test is one or more test procedures. Different test procedures correspond to different test items. The test items can be one or more of total phosphorus, total nitrogen, nitrate nitrogen, ammonia nitrogen, and chemical oxygen demand. After the multi-way tube 62 is connected to the water treatment reagent containers corresponding to the above test items through each valve 63, the requirements of each test can be met. At the beginning of a test item, the upper end of the first three-way valve 43 is connected to the first water pump, and the first water pump 41 pumps the water in the sampling tube 42 and the pipeline between the first water pump 41 and the first three-way valve 43 into the sewage treatment equipment S. After that, the lower end of the first three-way valve 43 is connected to the first water pump 41, and the river water sample is pumped into the cuvette 12 through the first water pump 41 and the sampling tube 42. In this embodiment, during each test process in the river water quality test, the river sampling module 4 only injects water sample into one cuvette 12.

[0040] Then, the mounting plate 66 is pushed by the driving member 67 to move the sample storage vessel 1 on the mounting plate 66 to the bottom of the second three-way valve 64. According to the detection item, the corresponding valve 63 is opened to connect the multi-way tube 62 with the water treatment reagent container containing the corresponding digester. The dosing module 6 adds medicine to the sample storage vessel 1 in a manner that removes the residual liquid. The dosing method is as follows: the upper end of the second three-way valve 64 is connected to the second water pump 61, and the valve 63 between the multi-way pipe 62 and the water tank W is opened. The water in the multi-way pipe 62 and the water in the pipeline between the second three-way valve 64 and the multi-way pipe 62 are input into the sewage treatment equipment S through the second water pump 61, and the water treatment reagent is pumped into the multi-way pipe 62 through the second water pump 61. Next, the valve 63 between the multi-way pipe 62 and the water tank W is closed, and the lower end of the second three-way valve 64 is connected to the second water pump 61, so that the water treatment reagent is injected into the cuvette 12 of the sample storage vessel 1 below the second three-way valve 64 under the action of the second water pump 61. The dosing process of the digester is completed. The sample storage vessel 1 is placed in the digestion instrument 2 for digestion through the transfer module 7, and the transfer module 7 is preferably an articulated robotic arm. After digestion is completed, the transfer module 7 reinserts the sample storage vessel 1 into the mounting plate 66, opens the valve 63 corresponding to the water treatment reagent container of the corresponding color developer, and the dosing module 6 injects the corresponding color developer into the sample storage vessel 1 according to the above-mentioned dosing method. The sample storage vessel 1 is then placed into the spectrum detection module 3 for water quality analysis through the transfer module 7. After the analysis is completed, the transfer module 7 removes the sample storage vessel 1 from the spectrum detection module 3 and pours out the liquid in the sample storage vessel 1, and then inserts the sample storage vessel 1 into the mounting plate 66. In other test items of this river water quality test, water samples can be drawn again according to the above process, and other parameters of the water samples can be tested.

[0041] Furthermore, the lake sampling module 5 includes a drone body 51, a hoisting mechanism 52 fixed to the bottom of the drone body 51, an assembly rack 53 fixed to the output end of the hoisting mechanism 52, multiple rows of samplers 54 fixed to the bottom of the assembly rack 53, and a sealing assembly 55 for sealing the sampler 54 inlet. The sealing assembly 55 is also used to open the sampler 54 inlet of the corresponding row at different water levels. The system also has a vessel holder 8 and a drone carrier 9. The vessel holder 8 is used to support the sample storage vessel 1, and the drone carrier 9 is used to carry the drone body 51. The initial position of the lake sampling module 5 is located near the mouth of a river flowing around the lake. The detection site during the lake water quality detection is in the plant growth area near the lake mouth. In this embodiment, a plurality of detection points are set, and detection points of different water depths are set according to the differences in the growth positions of different plants.

[0042] After a certain frequency of river water quality testing, the lake to be tested is sampled through the lake sampling module 5. During the sampling process, the lake sampling module 5 samples multiple detection points in sequence. During this period, the drone body 51 carries multiple rows of samplers 54 to arrive above a detection site, seals the sampling port of the sampler 54 through the sealing component 55, and hoists the assembly rack 53 through the hoisting mechanism 52, so that the sampler 54 reaches the first detection point in the lake. The sealing component 55 opens the sampling port of the first row of samplers 54 and samples the first detection point. Afterwards, the hoisting mechanism 52 lifts the assembly rack 53, takes the sampler 54 out of the lake, and samples each detection point in sequence according to the above process. The number of detection points is the same as the number of rows of samplers 54, and the number of samplers 54 in each row of samplers 54 is the same as the number of detection items.

[0043] After the sampling is completed, the lake sampling module 5 goes to the water quality detection module of the river around the lake to release the lake water sample. The transfer module 7 places the sample storage vessel 1 into the vessel holder 8, and the lake sampling module 5 injects the lake water samples in a row of samplers 54 into each cuvette 12 of the sample storage vessel 1. Afterwards, the water quality detection module of the river around the lake digests and performs color development and water quality analysis on the lake water samples in the sample storage vessel 1 according to the detection method of river water quality detection. Afterwards, the lake water samples in each row of samplers 54 are detected in turn according to the above method. The spectral detection module 3 sends the test results of the river water quality detection and the lake water quality detection to the central processing unit. The central processing unit combines the test results of multiple river water quality detections and the lake water quality detection during the monitoring period to analyze the lake plant growth environment and judge the degree of influence of the water quality of the river around the lake on the growth environment of various lake plants.

[0044] Specifically, the hoisting mechanism 52 includes a carrier plate 521, two hoists 522 and two fixed pulleys 523 symmetrically arranged on either side of the carrier plate 521, and two speed measuring components 524. The carrier plate 521 is also provided with a control module. The two hoists 522 and the two speed measuring components 524 are electrically connected to the control module. The ropes of the two hoists 522 are respectively passed around the two fixed pulleys 523 and connected to the assembly frame 53 on both sides. The speed measuring components 524 are used to detect the rotation speed of the fixed pulleys 523. In this embodiment, the speed measuring components 524 are preferably Hall effect sensors. Accordingly, a gear corresponding to the Hall effect sensor is provided on the rotating shaft of the fixed pulley 523. When the gear rotates with the fixed pulley 523, the Hall effect sensor can detect the rotation speed of the fixed pulley 523 based on the change in the magnetic field.

[0045] The sampler 54 includes a sample feeding dish 541 and a sample loading tube 542 provided at the bottom of the sample feeding dish 541. The sample loading tube 542 can be inserted into the sample storage vessel 1, and a sample outlet 543 is provided at the bottom of the side wall of the sample loading tube 542. A sample sealing tube 544 is slidably provided on the outside of the sample loading tube 542, and the bottom of the sample sealing tube 544 protrudes outward to form a pressure plate 545. The pressure plate 545 is elastically connected to the sample loading tube 542 or the sample feeding dish 541. In this embodiment, a spring is provided between the top of the sample loading tube 542 and the pressure plate 545. The assembly frame 53 includes a frame 531 and a perforated plate 532 fixed to the bottom of the frame 531. A positioning column 533 is fixed to the top of the frame 531, and a positioning tube 526 corresponding to the positioning column 533 is fixed to the bottom of the carrier plate 521. The bottom of the positioning tube 526 is trumpet-shaped, and the top of the positioning column 533 is chamfered. The sealing assembly 55 includes a cover plate 551 that slides inside the frame 531 and a power component 552 fixed to the top of the frame 531. The power component 552 is used to drive the cover plate 551 in linear reciprocating motion. In this embodiment, the power component 552 is preferably an electric push rod with a protection level of up to IP68. The cover plate 551 has a row of through holes, and the sampler 54 in each row can communicate with the through holes in the cover plate 551. The sampler 54's sampler inlet is located at the top of the sample dish 541.

[0046] When the sealing assembly 55 closes the sampling port of the sampler 54, the through hole of the cover 551 is staggered with the sampling port of the sampling dish 541, and the cover 551 is located at one end of the frame 531. Then the power component 552 drives the cover 551 to move intermittently toward the other end of the frame 531. During this period, the through hole of the cover 551 is connected with the sampling port of each row of samplers 54 in turn to obtain lake water samples. After each row of samplers 54 has obtained lake water samples, the cover 551 moves to the other end of the frame 531.

[0047] During the process of hoisting and lifting the assembly frame 53, the rotation speed of the two fixed pulleys 523 is detected by the two speed measuring modules 524 in cooperation with the control module on the carrier plate 521, so as to detect the length of the rope released by the two winches 522. Based on the rotation speed of one of the fixed pulleys 523, the control module adjusts the speed of the winch 522 corresponding to the other fixed pulley 523, so that the number of rotations of the two fixed pulleys 523 remains consistent, ensuring that the length of the rope released by the two winches 522 is consistent, avoiding obvious tilt of the assembly frame 53 and the sampler 54, thereby improving the working stability when moving the sampler 54 during the sampling process. In addition, the hoisting mechanism 52 also includes guide wheels 525 symmetrically arranged on both sides of the carrier plate 521. The rope of the winch 522 passes through the carrier plate 521 and successively passes around the guide wheels 525 and the fixed pulley 523 before being connected to the assembly frame 53. The guide wheels 525 are used to reduce the friction between the rope of the winch 522 and the carrier plate 521 and increase the contact area between the rope and the fixed pulley 523.

[0048] Before the lake sampling module 5 injects the lake water sample from the sampler 54 into the sample storage vessel 1, the hoisting mechanism 52 first raises the assembly frame 53 to a sufficient height so that the positioning posts 533 on the frame 531 are embedded in the positioning tube 526. In this embodiment, the number of positioning posts 533 is preferably four, and the four positioning posts 533 are symmetrically distributed on both sides of the frame 531. After the positioning column 533 is embedded in the positioning tube 526, the relative positions of the assembly frame 53 and the sampler 54 and the drone body 51 remain unchanged, and the sample-carrying tube 542 is embedded in the cuvette 12 through the vertical drop of the drone body 51. Before the sample-carrying tube 542 is embedded in the cuvette 12, the sealing tube 544 blocks the sample outlet 543 of the sample-carrying tube 542. After the sample-carrying tube 542 is embedded in the cuvette 12, the pressure plate 543 is abutted against the assembly plate 11 of the sample storage vessel 1, and the sealing tube 544 slides relative to the sample-carrying tube 542 to open the sample outlet 543, so that the lake water sample in the sample-carrying tube 542 can enter the cuvette 12 through the sample outlet 543, thereby realizing the sampling of the lake water sample. In the sampling process, since the assembly plate 11 of the sample storage vessel 1 is abutted against the top of the vessel holder 8, the pressure of the pressure plate 545 is borne by the vessel holder 8 and the assembly plate 11, thereby preventing the cuvette 12 from being damaged.

[0049] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A lake plant growth environment monitoring system based on water quality detection of a river around a lake, comprising a sample storage vessel (1) for storing water samples, and a digestion module (2) and a spectrum detection module (3) for accommodating the sample storage vessel (1), characterized in that: The system further comprises a river sampling module (4) for injecting a river water sample into the sample storage vessel (1), a lake sampling module (5) for injecting a lake water sample into the sample storage vessel (1), a dosing module (6) for injecting a water treatment reagent into the sample storage vessel (1), a transport module (7) for moving the sample storage vessel (1), and sewage treatment equipment for purifying residual water in the river sampling module (4) and the dosing module (6); The sample storage vessel (1), the digestion module (2), the spectrum detection module (3), the river sampling module (4), the dosing module (6) and the transport module (7) constitute a river water quality detection module around the lake, and each river around the lake to be tested is provided with a river water quality detection module around the lake. The system further comprises a central processing unit connected to each river water quality detection module around the lake, and the central processing unit is used to analyze the impact of the water quality of the river around the lake on the growth environment of lake plants; after each river water quality detection at a certain frequency, the lake sampling module extracts a batch of water samples from the lake plant growth environment, and the river water quality detection module around the lake performs lake water quality detection on the water samples; The lake sampling module (5) includes a drone body (51), a hanging mechanism (52) fixedly mounted on the bottom of the drone body (51), an assembly rack (53) fixedly mounted on the output end of the hanging mechanism (52), multiple rows of samplers (54) fixedly mounted on the bottom of the assembly rack (53), and a sealing assembly (55) for sealing the sampler (54) inlet ports, wherein the sealing assembly (55) is further used to open the sampler (54) inlet ports of corresponding rows at different water levels; The hoisting mechanism (52) includes a carrier plate (521), two winches (522) and two fixed pulleys (523) symmetrically arranged on both sides of the carrier plate (521), and two speed measuring components (524), wherein the ropes of the two winches (522) respectively pass through the two fixed pulleys (523) and are connected to both sides of the assembly frame (53); The sampler (54) includes a sample feeding dish (541) and a sample carrying tube (542) provided at the bottom of the sample feeding dish (541), the sample carrying tube (542) can be extended into the sample storage vessel (1), and a sample outlet (543) is provided at the bottom of the side wall of the sample carrying tube (542), a sample sealing tube (544) is slidably provided on the outside of the sample carrying tube (542), and the bottom of the sample sealing tube (544) protrudes outward to form a pressing plate (545), and the pressing plate (545) is elastically connected to the sample carrying tube (542) or the sample feeding dish (541); The assembly frame (53) comprises a frame (531) and a hole plate (532) fixed to the bottom of the frame (531); a positioning column (533) is fixed to the top of the frame (531); and a positioning tube (526) corresponding to the positioning column (533) is fixed to the bottom of the carrier plate (521).

2. The lake plant growth environment monitoring system based on water quality detection of surrounding lake rivers according to claim 1 is characterized in that: The river sampling module (4) comprises a first water pump (41), a sampling tube (42) connected to the water inlet of the first water pump (41), and a first three-way valve (43) having one port connected to the water outlet of the first water pump (41), wherein the other two ports of the first three-way valve (43) are respectively used for inputting a quantitative river water sample into the sample storage vessel (1) and discharging excess river water sample.

3. The lake plant growth environment monitoring system based on water quality detection of surrounding lake rivers according to claim 2 is characterized in that: The dosing module (6) includes a second water pump (61), a multi-way pipe (62) connected to the water inlet of the second water pump (61), a plurality of valves (63) provided on the multi-way pipe (62), and a second three-way valve (64) having one port connected to the water outlet of the second water pump (61). The multi-way pipe (62) is used to transport water treatment reagents to the second water pump (61), and the other two ports of the second three-way valve (64) are used to input a fixed amount of water treatment reagents into the sample storage vessel (1) and discharge excess water treatment reagents, respectively. The water treatment reagents include a digester and a developer.

4. The lake plant growth environment monitoring system based on water quality detection of surrounding lake rivers according to claim 3 is characterized in that: The dosing module (6) further includes a slide rail (65), a mounting plate (66) slidingly arranged on the inner side of the slide rail (65), and a driving member (67) for driving the mounting plate (66) to move linearly back and forth, wherein the mounting plate (66) is used to load the sample storage vessel (1).

5. The lake plant growth environment monitoring system based on water quality detection of surrounding lake rivers according to claim 1 is characterized in that: The hoisting mechanism (52) further includes guide wheels (525) symmetrically arranged on both sides of the carrier plate (521). The rope of the hoist (522) passes through the carrier plate (521) and sequentially passes around the guide wheels (525) and the fixed pulley (523) before being connected to the assembly frame (53). The guide wheels (525) are used to reduce the friction between the rope of the hoist (522) and the carrier plate (521) and to increase the contact area between the rope and the fixed pulley (523).

6. The lake plant growth environment monitoring system based on water quality detection of surrounding rivers according to claim 1 is characterized in that: The sealing assembly (55) includes a cover plate (551) slidably arranged on the inner side of the frame (531) and a power component (552) for driving the cover plate (551) to move linearly back and forth. The cover plate (551) is provided with a row of through holes, and the sampling ports of each row of samplers (54) can be connected to the through holes on the cover plate (551).

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