Lake plant growth environment monitoring system based on lake-surrounding river water quality detection

Abstract

The invention relates to a lake plant growth environment monitoring system based on lake-surrounding river water quality detection, and belongs to the technical field of water sample detection and treatment. The system comprises a central processing unit, a sample storage vessel for storing a water sample, a digestion module and a spectrum detection module which are used for accommodating the sample storage vessel, a river sampling module for injecting a river water sample into the sample storage vessel, a lake sampling module for injecting a lake water sample into the sample storage vessel, and a spectrum detection module for detecting the spectrum of the sample storage vessel, the dosing module is used for injecting a water treatment reagent into the sample storage vessel, and the transfer module and the sewage treatment equipment are used for moving the sample storage vessel. The system can automatically perform digestion, color development treatment and water quality analysis on a river water sample and a lake water sample, and monitor the growth environment of lake plants in combination with lake-surrounding river water quality detection so as to analyze the influence of sewage in the lake-surrounding river on the lake plants and improve the water treatment efficiency in the water quality detection process.

Description

Technical Field

[0001] The 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 a river around a lake. Background Art

[0002] Lake ecosystems are an important part of biodiversity, and lake plants play a key role in maintaining water quality, providing habitats, and promoting material circulation. Therefore, it is crucial to monitor the growth environment of lake plants. This monitoring not only needs to focus on the physical and chemical indicators of the water body, but also needs to comprehensively consider the changes in water quality of surrounding rivers to ensure a comprehensive assessment of the suitability of plant growth.

[0003] However, the current lake plant growth environment monitoring system has some shortcomings. On the one hand, it is difficult for the existing monitoring system to automatically process and detect 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 the residual water samples and reagents after the test, which may cause the environment around the monitoring site to be polluted. 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 container for storing water samples, and a digestion module and a spectral detection module for accommodating the sample storage container, wherein the water sample stored in the sample storage container is a river water sample or a lake water sample, and the lake water sample originates from the lake plant growth environment, the system also comprises 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, a transport module for moving the sample storage container, and sewage treatment equipment for purifying residual water in the river sampling module and the dosing module.

[0007] The sample storage vessel, digestion module, spectrum detection module, river sampling module, dosing module and transport module constitute a river water quality detection module around the lake, and each river around the lake to be tested is equipped with a river water quality detection module around the lake. The system also includes a central processor connected to each river water quality detection module around the lake, and the central processor is used to analyze the impact of the water quality of the river around the lake on the growth environment of lake plants. During the operation of the system, the river water quality detection modules of each river around the lake perform river water quality detection at 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 the river water samples are injected into the sample storage container, the digester is added to the sample storage container through the dosing module, and the sample storage container is placed in the digestion module for digestion through the transfer module. After the digestion is completed, the transfer module transfers the sample storage container to the dosing module, and the dosing module adds a color developer to the sample storage container. Then the transfer module places the sample storage container 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 processor, so that the central processor 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, and the other two ports of the first three-way valve are respectively 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, a plurality of valves arranged on the multi-way pipe, and a second three-way valve having 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 slidably 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 UAV body, a hanging mechanism fixed at the bottom of the UAV body, an assembly rack fixed at the output end of the hanging mechanism, multiple rows of samplers fixed at the bottom of the assembly rack, and a sealing assembly for closing the sampler inlet ports, wherein 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 bypasses the guide wheels and the fixed pulley and is 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 injection dish and a sample loading tube arranged at the bottom of the sample injection 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, a sample sealing cylinder is slidably provided on the outer side 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 injection dish.

[0015] As a further optimization solution of the present invention, the assembly frame includes a frame body and a perforated plate fixed to the bottom of the frame body, a positioning column is fixed to the top of the frame body, 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 slidably arranged on the inner side of the frame and a power component fixedly arranged on the top of the frame, the power component is used to drive the cover plate to reciprocate linearly, 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 the water quality detection module of the river around the lake to detect the water quality of the river around the lake. During the detection process, the water sample can be automatically digested and colorized. After the river water sample is added to the cuvette, and after 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, that is, the mutual influence between different water samples and different reagents can be avoided, the accuracy of water quality detection can be improved, and the pollution of the environment caused by water sample detection can be avoided;

[0019] 2) After the present invention performs a certain frequency of river water quality detection, the lake sampling module extracts a batch of water samples from the lake plant growth environment, and the surrounding river water quality detection module performs lake water quality detection on the water samples, so that the central processor can monitor the lake plant growth environment in combination with the surrounding river water quality detection, 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 the water treatment efficiency during water quality detection;

[0020] 3) The present invention obtains lake water samples by carrying a sampler on a drone body. During the sampling process, the drone body carries multiple rows of samplers to arrive above a detection site, seals the sampler inlet through a sealing component, and hoists the assembly rack through a hoisting mechanism to make the sampler reach a detection point in the lake. The sealing component opens a row of sampler inlets to sample a detection point, and then other water bodies of different depths can be sampled according to the above process, which 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 has a pair of winches, fixed pulleys, guide wheels and speed measuring components. 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 frame, the rotation speed of the fixed pulley is detected by two speed measuring modules. The rotation speed of one of the fixed pulleys is used as a reference to adjust the winch corresponding to the other fixed pulley to ensure 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. During the sampling, the rotation of the assembly frame and the sampler is constrained by the symmetrical structure of the hanging mechanism, so that the positioning tube can cooperate with the positioning column to position the sampler, thereby ensuring the 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 The enlarged view of point A in the middle;

[0025] Figure 3 It is a schematic diagram of the structure 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 The enlarged view of point B in the middle;

[0028] Figure 6 It 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 support; 9. UAV carrier; 11. Assembly plate; 12. Cuvette; 41. First water pump; 42. Sampling tube; 43. First three-way valve; 51. UAV body; 52. Lifting 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 tube; 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 further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here 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. Technical personnel 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 the 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 the rivers around the lake includes a sample storage vessel 1 for storing water samples, and a digestion module 2 and a spectral detection module 3 for accommodating the sample storage vessel 1. The water sample stored in the sample storage vessel 1 is a river water sample or a lake water sample, and the lake water sample originates from the lake plant growth environment.

[0034] The water quality detection module of 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 spectrum detection module 3, and 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 of the river around the lake. The lake sampling module 5 is a drone sampling mechanism. After the water quality detection module of the river around the lake performs a certain number of river water quality tests, it goes to the top of the lake to be tested to collect water samples in the plant growth environment, so that the system can timely analyze 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 the 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 around the lake conducts river water quality detection at a certain frequency. In the later stage of the monitoring cycle, that is, after a certain frequency of river water quality detection, the lake sampling module 5 performs lake water sampling, and the water quality detection module of the river 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 around the lake sends the lake water quality detection results and river water quality detection results within the monitoring cycle to the central processing unit. The central processing unit analyzes the input of pollutants from the river 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, Figure 2 As shown, the sample storage vessel 1 includes an assembly plate 11 and a plurality of cuvettes 12 penetrating the assembly plate 11, and the assembly plate 11 is fixedly arranged on 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, and the other two ports of the first three-way valve 43 are respectively used to input a quantitative river water sample into the sample storage vessel 1 and 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, a plurality of valves 63 arranged on the multi-way pipe 62, and a second three-way valve 64 having a 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, wherein one valve 63 is connected to the water tank W, and the remaining 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 respectively used to input a quantitative water treatment reagent into the sample storage vessel 1 and discharge excess water treatment reagents, and the water treatment reagents include a digester and a color developer. The multi-way pipe 62 is strip-shaped as a whole, and the valve 63 connected to the water tank W is arranged at one end of the multi-way pipe 62 in the length direction, and the other valves 63 are arranged 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 length direction. The staff regularly replenishes the water tank W and regularly adds water treatment reagents to the water treatment reagent container. A sewage treatment device S is provided on one side of the spectrum detection module 3, and 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 device S. In addition, a water inlet channel (not shown in the figure) is also provided on one side of the water inlet of the sewage treatment device S. After the water sample detection is completed, the water sample in the cuvette is poured into the water inlet channel through the transfer module 7, so that the detected water sample is processed by the sewage treatment device 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 driving member 67 for driving the mounting plate 66 to reciprocate linearly, and 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, and 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 with the upper cover of the spectrometer. The digestion module 2 includes a digestion instrument and a digestion instrument cover opening assembly, and the digestion instrument cover opening assembly is consistent with the cover opening assembly of the spectrometer. 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 digestion instrument cover opening assembly. In addition, in other embodiments, the above-mentioned cover opening assembly can also be replaced by other drive structures, as long as the drive structure can drive the spectrometer and the upper cover of the digestion instrument to open.

[0039] The specific process of each river water quality detection is one or more detection processes. Different detection processes correspond to different detection items. The detection items can be one or more of total phosphorus, total nitrogen, nitrate nitrogen, ammonia nitrogen, and chemical oxygen demand detection. After the multi-way tube 62 is connected to the water treatment reagent container corresponding to the above detection items through each valve 63, the requirements of various detections can be met. At the beginning of a detection project, 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 to 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 detection, 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 below the second three-way valve 64. According to the detection items, 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 to remove 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, the valve 63 between the multi-way pipe 62 and the water tank W is opened, and 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, 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, and then puts the sample storage vessel 1 into the spectrum detection module 3 for water quality analysis through the transfer module 7. After the analysis, 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 the 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 hanging mechanism 52 fixed at the bottom of the drone body 51, an assembly frame 53 fixed at the output end of the hanging mechanism 52, multiple rows of samplers 54 fixed at the bottom of the assembly frame 53, and a sealing assembly 55 for sealing the sampler 54 inlet, and 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 estuary of a river around the lake, and the detection site during the lake water quality detection is in the plant growth area near the estuary in the lake. 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, closes 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, and the sealing component 55 opens the sampling port of the sampler 54 in the first row to sample the first detection point. After that, 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 sampling, 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 puts 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 colorizes the lake water samples in the sample storage vessel 1 and performs water quality analysis 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 detections during the monitoring period to analyze the growth environment of lake plants and determine 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 both sides of the carrier plate 521, and two speed measuring components 524. A control module is also provided on the carrier plate 521. 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 both sides of the assembly frame 53. The speed measuring components 524 are used to detect the rotation speed of the fixed pulley 523. The speed measuring component 524 in this embodiment is preferably a Hall sensor. Accordingly, a gear corresponding to the Hall sensor is provided on the rotating shaft of the fixed pulley 523. When the gear rotates with the fixed pulley 523, the Hall sensor can detect the rotation speed of the fixed pulley 523 according to the change of the magnetic field.

[0045] The sampler 54 includes a sample feeding dish 541 and a sample loading tube 542 disposed at the bottom of the sample feeding dish 541. The sample loading tube 542 can be extended into the sample storage vessel 1, and a sample outlet 543 is disposed at the bottom of the side wall of the sample loading tube 542. A sample sealing tube 544 is slidably disposed outside the sample loading tube 542, and the bottom of the sample sealing tube 544 protrudes outward to form a pressing plate 545. The pressing plate 545 is elastically connected to the sample loading tube 542 or the sample feeding dish 541. In this embodiment, a spring is disposed between the top of the sample loading tube 542 and the pressing plate 545. The assembly frame 53 includes a frame 531, and a perforated plate 532 fixedly disposed at the bottom of the frame 531. A positioning column 533 is fixedly disposed at the top of the frame 531. A positioning tube 526 corresponding to the positioning column 533 is fixedly disposed at 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 slidably arranged inside the frame 531 and a power component 552 fixedly arranged on the top of the frame 531, and the power component 552 is used to drive the cover plate 551 to reciprocate linearly. The power component 552 in this embodiment is preferably an electric push rod with a protection level of up to IP68. A row of through holes is provided on the cover plate 551, and the injection port of each row of samplers 54 can be connected to the through holes on the cover plate 551, and the injection port of the sampler 54 is provided on the top of the injection 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 intermittently move toward the other end of the frame 531. During this period, the through holes of the cover 551 are connected with the sampling ports 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 hanging and lifting the assembly frame 53, the rotation speed of the two fixed pulleys 523 is detected by 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 lengths of the ropes released by the two winches 522 are 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 lifting 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 bypasses the guide wheels 525 and the fixed pulley 523 to be 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 in the sampler 54 into the sample storage container 1, the hanging mechanism 52 first lifts 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 the 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 pressing plate 543 abuts 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 abuts against the top of the vessel holder 8, the pressure of the pressing 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-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A lake plant growth environment monitoring system based on water quality detection of rivers 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 also includes a river sampling module (4) for injecting river water samples into the sample storage vessel (1), a lake sampling module (5) for injecting lake water samples into the sample storage vessel (1), a dosing module (6) for injecting water treatment reagents 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), digestion module (2), spectrum detection module (3), river channel sampling module (4), dosing module (6) and transport module (7) constitute a water quality detection module for rivers around the lake, and each river around the lake to be tested is provided with a water quality detection module for rivers around the lake. The system also includes a central processing unit connected to each water quality detection module for rivers around the lake, and the central processing unit is used to analyze the impact of the water quality of rivers around the lake on the growth environment of lake plants.

2. The lake plant growth environment monitoring system based on water quality detection of the river around the lake according to claim 1 is characterized by: 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 the river around the lake according to claim 2 is characterized by: 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) arranged 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 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 color developer.

4. The lake plant growth environment monitoring system based on water quality detection of the river around the lake according to claim 3 is characterized by: 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 driving member (67) for driving the mounting plate (66) to move linearly back and forth, and the mounting plate (66) is used to fill the sample storage vessel (1).

5. The lake plant growth environment monitoring system based on water quality detection of the river around the lake according to claim 1 is characterized by: The lake sampling module (5) comprises an unmanned aerial vehicle body (51), a hanging mechanism (52) fixedly mounted at the bottom of the unmanned aerial vehicle body (51), an assembly frame (53) fixedly mounted at the output end of the hanging mechanism (52), a plurality of rows of samplers (54) fixedly mounted at the bottom of the assembly frame (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.

6. The lake plant growth environment monitoring system based on water quality detection of the river around the lake according to claim 5 is characterized by: The hoisting mechanism (52) comprises a carrier plate (521), two hoists (522) and two fixed pulleys (523) symmetrically arranged on both sides of the carrier plate (521), and two speed measuring components (524); ropes of the two hoists (522) respectively pass around the two fixed pulleys (523) and are connected to both sides of the assembly frame (53).

7. The lake plant growth environment monitoring system based on water quality detection of the river around the lake according to claim 6 is characterized by: The hoisting mechanism (52) further comprises 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).

8. The lake plant growth environment monitoring system based on water quality detection of the river around the lake according to claim 6 is characterized by: The sampler (54) comprises a sample feeding dish (541) and a sample carrying tube (542) arranged 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 arranged at the bottom of the side wall of the sample carrying tube (542); a sample sealing tube (544) is slidably arranged on the outer side 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).

9. The lake plant growth environment monitoring system based on water quality detection of the river around the lake according to claim 6 is characterized by: The assembly frame (53) comprises a frame (531) and a perforated plate (532) fixedly arranged at the bottom of the frame (531); a positioning column (533) is fixedly arranged at the top of the frame (531); and a positioning tube (526) corresponding to the positioning column (533) is fixedly arranged at the bottom of the carrier plate (521).

10. The lake plant growth environment monitoring system based on water quality detection of the river around the lake according to claim 9 is characterized in that: The sealing assembly (55) comprises 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 perform linear reciprocating motion. The cover plate (551) is provided with a row of through holes, and the sample inlets of each row of samplers (54) can be connected to the through holes on the cover plate (551).

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