A water quality detection device based on unmanned boat and detection method thereof

Abstract

The present invention relates to the technical field of water quality detection, and in particular to a water quality detection device based on an unmanned boat and a detection method thereof, comprising a hull, wherein a propulsion assembly is arranged on the hull, wherein the propulsion assembly is used to push the hull to move, wherein a controller is fixedly connected to the hull, and further comprising: a support frame fixedly mounted between two side walls of the hull; and a sleeve fixedly mounted on the support frame. The present invention, through the arrangement of a floating algae sweeping assembly, helps to prevent these impurities from accumulating at a sampling port and increasing the difficulty of sampling, and on the other hand, ensures that the blockage can be removed as a whole by the floating algae sweeping assembly, which helps to prevent the blockage from penetrating a sampling channel in the form of tiny fragments after being broken and contaminating a sample, thereby ensuring the smoothness of the sampling process and the authenticity and effectiveness of the sample.

Description

Technical Field

[0001] The present invention relates to the field of water quality detection, and in particular to a water quality detection device based on an unmanned boat and a detection method thereof. Background Art

[0002] Water quality testing is an important basis for my country to manage and monitor water source environmental indicators. Before water quality testing, it is necessary to collect water at the testing site, and then use professional instruments to test various indicators. However, for some portable handheld water quality detectors, due to their small layout, the area for testing water sources is limited, and it is impossible to conduct water sampling inspections in deep water areas close to the water source.

[0003] The prior art discloses some invention patents for water quality detection in unmanned boats. A Chinese patent with application number 202210389205.8 discloses a water quality detection device based on an unmanned boat, including a hull, a collecting box fixed to the stern of the hull, and a storage box fixed to one side of the collecting box, the outlet of the storage box is connected to the interior of the collecting box, and a plurality of water storage components are arranged inside the storage box, and a driving mechanism for driving the water storage components to move is provided inside the collecting box.

[0004] However, the above-mentioned detection equipment still has certain defects when in use. When conducting water quality sampling operations, faced with water bodies rich in impurities and high-density algae, especially in warm seasons and nutrient-rich waters, the abundance of these natural suspended solids increases dramatically, which not only directly threatens the smooth flow of the sampling port, but also conventional cleaning measures are often difficult to implement perfectly, resulting in blockages such as algae being easily damaged and broken in the process of cleaning. These tiny fragments may then penetrate into the sampling system. This may not only cause the sampling process to be interrupted, but more importantly, the incorporation of these broken impurities will directly affect the purity of the sample, resulting in distorted test results and failure to accurately reflect the true water quality conditions. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a water quality detection device based on an unmanned boat and a detection method thereof.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a water quality detection device based on an unmanned boat, comprising a hull, a propulsion assembly is arranged on the hull, the propulsion assembly is used to propel the hull to move, a controller is fixedly connected to the hull, and further comprises:

[0007] A support frame, fixedly installed between two side walls of the hull;

[0008] A sleeve, fixedly mounted on the support frame;

[0009] Water quality sampling and testing components, used to sample water areas at designated locations;

[0010] A pushing component, disposed on the outer wall of the sleeve, for pushing the water quality sampling and detection component downward to a specified depth in the water area;

[0011] A detection unit, used for obtaining flow rate slowing information;

[0012] A floating algae cleaning component, after the detection unit obtains the flow rate slowing information, is used to completely clean the floating algae that will be entangled on the water quality sampling and detection component to prevent the floating algae from breaking and entering the interior of the water quality sampling and detection component;

[0013] The present invention arranges a floating algae sweeping component. During the sampling process, the floating algae sweeping component is deployed at the front end of the sampling channel to effectively block impurities such as phytoplankton and aquatic plants to prevent them from disturbing the sampling process and affecting the accuracy of the analysis. In addition, during the sampling operation, the detection unit will detect the sampling situation of the water quality sampling detection component in real time. If the flow rate of the incoming water is detected to be lower than a preset threshold during the sampling process, it is inferred that there is a risk of blockage in the water quality sampling detection component. At this time, the floating algae sweeping component is controlled to start rotating, and then the floating algae and aquatic plants attached thereto are driven by the floating algae sweeping component to separate the obstructions from the sampling flow channel of the water quality sampling detection component.

[0014] Preferably: the water quality sampling and detection component includes:

[0015] A sampling rod, the sampling rod being slidably connected to the interior of the sleeve;

[0016] A sampling cylinder, fixedly connected to the end of the sampling rod;

[0017] A flow suction component, which is arranged at the top of the sampling tube and is used to guide the water flow to smoothly enter the interior of the sampling tube to achieve water collection;

[0018] Two groups of sampling ports are symmetrically arranged on the outer wall of the sampling tube, and a solenoid valve is fixedly installed inside each sampling port;

[0019] The pushing assembly is used to push the sampling rod to slide inside the sleeve.

[0020] Preferably: the floating algae removal component comprises:

[0021] A mounting frame, fixedly mounted on the end of the sampling tube;

[0022] A motor, fixedly mounted on the mounting frame;

[0023] A turntable, rotatably connected to the bottom of the sampling tube, and the turntable is fixedly connected to the outer wall of the output shaft of the motor;

[0024] Two bearing plates are symmetrically fixedly connected to the outer wall of the rotating disk;

[0025] Two first fine interception nets are rotatably connected to ends of the two supporting plates that are away from each other;

[0026] Two tension springs, respectively fixedly connected between the bearing plate and the first fine interception net at corresponding positions;

[0027] Two first chutes are respectively provided on the side walls of the two first fine interception nets;

[0028] Two arc-shaped intercepting blocks are symmetrically fixedly connected to the outer wall of the sampling tube, and the arc-shaped intercepting blocks are slidably connected to the first sliding groove.

[0029] Preferably, it also includes:

[0030] A plurality of needles are respectively fixedly connected to the outer wall of the first fine interception net.

[0031] Preferably, it also includes:

[0032] Two connecting plates are rotatably connected to the side walls of the two first fine interception nets respectively;

[0033] Two second fine interception nets are respectively fixedly connected to the side walls of the two connecting plates, and the two second fine interception nets are both slidably connected to the sampling tube;

[0034] Two second chutes are respectively arranged on the side walls of the two second fine interception nets.

[0035] Preferably, it also includes:

[0036] A threaded rod, fixedly connected to the output shaft end of the motor, and the threaded rod is located inside the sampling tube;

[0037] A squeeze plate, threadedly connected to the outer wall of the threaded rod;

[0038] A plurality of liquid level sensor components are arranged on the extrusion plate;

[0039] A circular plate, the circular plate being embedded in the interior of the sampling tube;

[0040] A plurality of one-way valves, all fixedly connected to the circular plate;

[0041] The circular sponge body is fixedly connected to the bottom of the circular plate.

[0042] Preferably: the liquid level sensor assembly comprises:

[0043] A liquid level port is provided on the extrusion disc;

[0044] A circular ring, fixedly connected to the inner wall of the liquid level port;

[0045] A sealing plate, arranged on the ring;

[0046] A counterweight is fixedly connected to the bottom of the sealing plate.

[0047] In a second aspect, the present invention provides a control method for a water quality detection device based on an unmanned boat, the control method comprising the following steps:

[0048] The controller receives the flow rate slowing down information obtained by the detection unit;

[0049] The controller generates first control information according to the flow rate slowing down information;

[0050] The controller sends the first control information to the motor to control the motor to start;

[0051] When water flows through the detection unit, the detection unit obtains flow rate information and compares the obtained flow rate information with a preset threshold. If the flow rate information is less than the threshold, the obtained information is called flow rate reduction information.

[0052] Preferably, it also includes:

[0053] The controller generates the second control information while generating the first control information;

[0054] The controller sends second control information to the solenoid valve to control the solenoid valve to close.

[0055] Preferably, it also includes:

[0056] The controller obtains the motor work completion information;

[0057] The controller generates third control information according to the motor work completion information;

[0058] The controller sends third control information to the solenoid valve to control the solenoid valve to open.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] 1. The present invention arranges a floating algae sweeping component at the front end of the sampling channel, so as to effectively block impurities such as phytoplankton and waterweeds to prevent them from interfering with the sampling process and affecting the accuracy of analysis. When a blockage is detected, the floating algae sweeping component is controlled to start rotating, and then the floating algae and waterweeds attached thereto are driven to separate from the sampling channel of the water quality sampling and detection component through the floating algae sweeping component. On the one hand, it helps to prevent these impurities from accumulating at the sampling port and increasing the difficulty of sampling. On the other hand, it also ensures that the blockage can be removed as a whole by the floating algae sweeping component, which helps to prevent it from penetrating the sampling channel in the form of tiny fragments after being broken and contaminating the sample, thereby ensuring the smoothness of the sampling process and the authenticity and effectiveness of the sample.

[0061] 2. The present invention, through the setting of the stinging needle, can slightly penetrate and maintain a certain degree of control over impurities such as floating algae and water plants when they pass through the first fine interception net, which is beneficial to ensure that during the rotation of the first fine interception net, these impurities such as floating algae and water plants will not be easily retained at the sampling inlet, thereby effectively reducing the possibility of blockage and keeping the subsequent sampling channel unobstructed.

[0062] 3. The present invention provides a second fine interception net. When the first fine interception net rotates to a predetermined position, the second fine interception net is precisely positioned at the front end of the sampling port, thereby forming a fine protection for the sampling entrance again, which helps to enhance the ability to prevent floating algae, water plants and other debris from invading the sampling port, thereby preventing blockage in the subsequent sampling process, and is beneficial to the continuity of sampling, helping to prevent sampling interruptions. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a flow chart of the control method of the present invention.

[0064] Figure 2 The overall structure of the detection device of the present invention is shown in FIG. Figure 1 .

[0065] Figure 3 The overall structure of the detection device of the present invention is shown in FIG. Figure 2 .

[0066] Figure 4 It is a structural schematic diagram of the connection between the sampling rod and the sampling tube of the present invention.

[0067] Figure 5 It is a structural schematic diagram of the connection between the sampling tube and the motor of the present invention.

[0068] Figure 6 For the present invention Figure 5 An enlarged schematic diagram of the structure of section A is shown.

[0069] Figure 7 For the present invention Figure 5 An enlarged schematic diagram of the structure of part B is shown.

[0070] Figure 8 The structure diagram of the connection between the sampling tube and the motor of the present invention is shown in FIG. Figure 2 .

[0071] Fig. 9 For the present invention Figure 8 An enlarged schematic diagram of the C-section structure is shown.

[0072] Fig.10 The structure of the present invention after the cross section of the sampling tube is shown in FIG. Figure 1 .

[0073] Fig.11 The structure of the present invention after the cross section of the sampling tube is shown in FIG. Figure 2 .

[0074] Fig.12 It is a schematic structural diagram of the extrusion disk of the present invention.

[0075] Fig.13 For the present invention Fig.12 An enlarged schematic diagram of the D structure is shown.

[0076] In the figure: 1. hull; 2. controller; 3. support frame; 4. sleeve; 5. electric push rod; 6. sampling rod; 7. sampling tube; 8. solenoid valve; 9. mounting frame; 10. motor; 11. turntable; 12. bearing plate; 13. first fine interception net; 14. tension spring; 15. first slide; 16. arc-shaped interception block; 17. needle; 18. connecting plate; 19. second fine interception net; 20. second slide; 21. threaded rod; 22. extrusion disk; 23. round plate; 24. one-way valve; 25. round sponge; 26. liquid level port; 27. ring; 28. sealing plate; 29. ​​counterweight. DETAILED DESCRIPTION

[0077] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0078] Application scenarios: When conducting water quality sampling operations, faced with water bodies rich in impurities and high-density algae, especially in warm seasons and nutrient-rich waters, the abundance of these natural suspended solids increases dramatically, which not only directly threatens the smooth flow of the sampling port, but also conventional cleaning measures are often difficult to implement perfectly, resulting in blockages such as algae being easily damaged and broken in the process of cleaning. These tiny fragments may then penetrate into the sampling system, which may not only cause the sampling process to be interrupted, but more importantly, the incorporation of these broken impurities will directly affect the purity of the sample, resulting in distorted test results and failure to accurately reflect the true water quality conditions.

[0079] like Figures 2 to 13 The water quality detection device based on an unmanned boat shown in the figure comprises a hull 1, a propulsion assembly is arranged on the hull 1, the propulsion assembly is used to propel the hull 1 to move, a controller 2 is fixedly connected to the hull 1, and further comprises:

[0080] A support frame 3 is fixedly installed between two side walls of the hull 1;

[0081] The sleeve 4 is fixedly mounted on the support frame 3;

[0082] Water quality sampling and testing components, used to sample water areas at designated locations;

[0083] A pushing component is arranged on the outer wall of the sleeve 4 and is used to push the water quality sampling and detection component downward to a specified depth in the water area;

[0084] A detection unit, used for obtaining flow rate slowing information;

[0085] The floating algae cleaning component is used to completely clean the floating algae that will be entangled on the water quality sampling and detection component after the detection unit obtains the flow rate slowdown information, so as to prevent the floating algae from breaking and entering the interior of the water quality sampling and detection component;

[0086] It should be understood that after the hull 1 is pushed to move to the target waters by the propulsion component, the water quality sampling and detection component is pushed to slowly move down to the predetermined depth of the waters by the propulsion component. Subsequently, the water quality sampling and detection component begins to sample the water quality. At the same time, during the sampling process, the floating algae removal component is deployed at the front end of the sampling channel to effectively block impurities such as phytoplankton and aquatic plants to prevent them from interfering with the sampling process and affecting the accuracy of the analysis. In the sampling operation, the detection unit will detect the sampling situation of the water quality sampling and detection component in real time. If it is detected during the sampling process, If the water flow rate is lower than the preset threshold, it is inferred that there is a risk of blockage in the water quality sampling and detection component. At this time, the floating algae sweeping component is controlled to start rotating, and then the floating algae and water plants attached to it are driven by the floating algae sweeping component to separate the blockages from the sampling flow channel of the water quality sampling and detection component. On the one hand, it helps to prevent these impurities from accumulating at the sampling port, increasing the difficulty of sampling. On the other hand, it also ensures that the blockage can be removed as a whole by the floating algae sweeping component, which helps prevent it from penetrating the sampling channel in the form of tiny fragments after breaking and contaminating the sample, thereby ensuring the smoothness of the sampling process and the authenticity and effectiveness of the sample.

[0087] It should be noted that the propulsion assembly includes existing components such as spiral blades, which provide corresponding power to the hull 1. This is an existing mature technology and will not be disclosed in detail here.

[0088] As a technical optimization solution of the present invention: the water quality sampling and detection component includes:

[0089] A sampling rod 6, the sampling rod 6 is slidably connected to the inside of the sleeve 4;

[0090] A sampling tube 7 is fixedly connected to the end of the sampling rod 6;

[0091] A flow suction component is arranged at the top of the sampling tube 7 and is used to guide the water flow to smoothly enter the interior of the sampling tube 7 to achieve water collection;

[0092] Two groups of sampling ports are symmetrically arranged on the outer wall of the sampling tube 7, and a solenoid valve 8 is fixedly installed inside each sampling port;

[0093] The pushing assembly is used to push the sampling rod 6 to slide inside the sleeve 4;

[0094] It should be understood that the propulsion component drives the sampling rod 6 to slowly descend along the sleeve 4, leading the sampling tube 7 to accurately reach the preset water depth. Then, the controller 2 instructs the solenoid valve 8 to open, thereby achieving smooth connection between the external water flow and the inside of the sampling tube 7, so that the water flow in the target water area can smoothly pass through the solenoid valve 8 guide system, and then automatically fill the sampling tube 7 under the action of the suction component, thereby efficiently completing the water quality sampling process.

[0095] It needs to be explained again that the pushing assembly includes an electric push rod 5 , which is fixedly connected to the outer wall of the sleeve 4 , and the telescopic end of the electric push rod 5 is fixedly connected to the sampling rod 6 .

[0096] It should be noted that the detection unit is a flow rate sensor, and there are multiple flow rate sensors, which are fixedly installed inside the solenoid valve 8 respectively.

[0097] It needs to be explained again that the suction flow component includes a pump (such as a submersible pump, a peristaltic pump, a piping system, etc.) for extracting water samples from a water source into the sampling tube 7. This is an existing mature technology and will not be disclosed in detail here.

[0098] As a technical optimization solution of the present invention: the floating algae removal component includes:

[0099] A mounting frame 9 is fixedly mounted on the end of the sampling tube 7;

[0100] The motor 10 is fixedly mounted on the mounting frame 9;

[0101] The turntable 11 is rotatably connected to the bottom of the sampling tube 7, and the turntable 11 is fixedly connected to the outer wall of the output shaft of the motor 10;

[0102] Two bearing plates 12 are symmetrically fixedly connected to the outer wall of the rotating disk 11;

[0103] Two first fine interception nets 13 are rotatably connected to ends of the two supporting plates 12 that are away from each other;

[0104] Two tension springs 14 are respectively fixedly connected between the supporting plate 12 and the first fine interception net 13 at corresponding positions;

[0105] Two first chutes 15 are respectively provided on the side walls of the two first fine interception nets 13;

[0106] The two arc-shaped intercepting blocks 16 are symmetrically fixedly connected to the outer wall of the sampling tube 7 , and the arc-shaped intercepting blocks 16 are slidably connected to the first sliding groove 15 .

[0107] It should be understood that after the target water flow enters the interior of the sampling tube 7 through the solenoid valve 8, the first fine interception net 13 will intercept the water flow entering the sampling tube 7 to prevent the solenoid valve 8 from being blocked by obstructions such as floating algae and aquatic plants. If there are too many obstructions such as floating algae and aquatic plants attached to the first fine interception net 13, it will affect the flow rate through the first fine interception net 13, and the detection unit will keenly sense the drop in flow rate. This signal is used to evaluate whether there is a blockage and take timely countermeasures, which helps to ensure the continuity of the sampling process and the purity of the sample. After determining that a blockage has occurred, , the controller 2 controls the motor 10 to rotate, the motor 10 drives the turntable 11 to rotate, the turntable 11 drives the two carrying plates 12 to rotate, the carrying plate 12 drives the first fine interception net 13 to rotate, and the first fine interception net 13 will drive the obstructions such as floating algae and water plants to completely separate from the sampling port, which helps to avoid the situation where excessive accumulation of the miscellaneous groove causes sampling difficulties, and on the other hand, helps to completely take away the obstruction substances such as floating algae and water plants, thereby preventing the obstruction substances such as floating algae and water plants from being broken into tiny particles and entering the interior of the water quality sampling and detection component through the sampling flow channel;

[0108] During the rotation of the first fine interception net 13, it will guide the first slide groove 15 to slide along the arc-shaped interception block 16 and finally disengage. Once the first slide groove 15 is completely disengaged from the arc-shaped interception block 16, the first fine interception net 13 without position restriction will be deflected outward by a specific angle under the driving force of the tension spring 14. This action helps to effectively shake off the floating algae, water plants and other debris adhering to the first fine interception net 13. Subsequently, the first fine interception net 13 remains unlocked and open when rising, and uses the impact force of the water flow itself to further flush and remove residual blocking materials, thereby ensuring the continuous cleaning of the first fine interception net 13 and facilitating its subsequent reuse.

[0109] As a technical optimization solution of the present invention: it also includes:

[0110] A plurality of needles 17 are respectively fixedly connected to the outer wall of the first fine interception net 13;

[0111] It should be understood that in the above embodiment, it is described that the floating algae, water grass and other debris attached are completely taken away from the sample inlet by the rotation of the first fine interception net 13. However, since the floating algae, water grass and other debris are not effectively intercepted, some of the blockages may be detached during the rotation of the first fine interception net 13, and then still remain near the sample inlet;

[0112] Therefore, through the setting of the needle 17, impurities such as floating algae and water plants can be slightly penetrated and a certain degree of control can be maintained when they pass through the first fine interception net 13, which is conducive to ensuring that during the rotation of the first fine interception net 13, these impurities such as floating algae and water plants will not be easily retained at the sampling entrance, thereby effectively reducing the possibility of blockage and keeping the subsequent sampling channel unobstructed.

[0113] As a technical optimization solution of the present invention: it also includes:

[0114] Two connecting plates 18 are rotatably connected to the side walls of the two first fine interception nets 13 respectively;

[0115] Two second fine interception nets 19 are respectively fixedly connected to the side walls of the two connecting plates 18, and the two second fine interception nets 19 are both slidably connected to the sampling tube 7;

[0116] Two second chutes 20 are respectively provided on the side walls of the two second fine interception nets 19;

[0117] It should be understood that in the above example, it is described that floating algae, water plants and other debris are intercepted by the first fine interception net 13, and the floating algae, water plants and other debris are separated from the sampling port. However, after the first fine interception net 13 rotates, if it is necessary to continue sampling, the sampling port may still be blocked;

[0118] Therefore, as the first fine interception net 13 rotates, the connecting plate 18 connected to it moves synchronously, and further drives the second fine interception net 19 to move along the specially designed second slide groove 20 path. The second slide groove 20 opened on the side wall of the second fine interception net 19 is adapted to the arc-shaped interception block 16, thereby helping to ensure that the first fine interception net 13 can deflect freely in the unlocked state without interfering with the coordinated operation of the entire device. When the first fine interception net 13 rotates to the predetermined position, the second fine interception net 19 is precisely positioned to the front end of the sampling port, thereby forming a fine protection for the sampling entrance again, helping to enhance the ability to prevent floating algae, water plants and other debris from invading the sampling port, thereby preventing blockage from occurring in the subsequent sampling process, and is beneficial to the continuity of sampling, helping to prevent sampling interruptions.

[0119] It should be noted that when the second fine interception net 19 is rotating, the controller 2 will temporarily instruct the solenoid valve 8 to close the flow path. This is to ensure that before the second fine interception net 19 is fully in place at the predetermined protection position, no impurities such as floating algae and aquatic plants will block the sampling inlet due to inappropriate timing, thereby ensuring the orderly progress of the sampling procedure and the continuous unobstructed flow of the sampling port.

[0120] As a technical optimization solution of the present invention: it also includes:

[0121] The threaded rod 21 is fixedly connected to the output shaft end of the motor 10, and the threaded rod 21 is located inside the sampling tube 7;

[0122] The extrusion plate 22 is threadedly connected to the outer wall of the threaded rod 21;

[0123] Multiple groups of liquid level sensor components are arranged on the extrusion plate 22;

[0124] The circular plate 23 is embedded in the sampling tube 7;

[0125] A plurality of one-way valves 24 are fixedly connected to the circular plate 23;

[0126] A circular sponge body 25 is fixedly connected to the bottom of the circular plate 23;

[0127] It should be understood that in the above example, it is explained that the first fine interception net 13 and the second fine interception net 19 are switched to intercept impurities such as floating algae and water plants to prevent the inlet from being blocked. However, the water quality may still contain some tiny impurities that can pass through the apertures of the first fine interception net 13 and the second fine interception net 19, and then enter the interior of the sampling tube 7 through the solenoid valve 8, affecting the final detection result;

[0128] Therefore, when the motor 10 is running, its power is transmitted to the threaded rod 21 to cause it to rotate. There is friction between the squeeze disk 22 and the inner wall of the sampling tube 7, and then the rotation of the threaded rod 21 drives the squeeze disk 22 to move upward in the vertical direction. The size of the squeeze disk 22 is carefully designed to fit the inner wall of the sampling tube 7. Therefore, when it moves upward, it will exert pressure on the water above, forcing the water to gather in the circular sponge 25 area located above the squeeze disk 22. Under this pressure, the water is forced to pass through the circular sponge 25 and is released into the cavity above the circular plate 23 through the one-way valve 24. The circular plate 23 is fixed on the inner wall of the sampling tube 7. This process cleverly uses the filtering characteristics of the circular sponge 25 to effectively intercept residual fine impurities, further purify the water, and ensure the purity of the sample;

[0129] When the extrusion plate 22 moves downward, it exerts force on the liquid level sensing component, prompting the component to give way in time. This design is to eliminate the obstruction of the extrusion plate 22 that may be caused by the closure of the bottom space, thereby ensuring a smooth extrusion process.

[0130] It should be noted that, in the process of the squeezing plate 22 moving upward, it helps to drain the external water quality into the interior of the sampling tube 7. Through secondary storage, if the first sampling does not meet expectations, the backup water quality sample retained in advance can still be used for re-inspection.

[0131] It should be noted again that the rotation angle of the first fine interception net 13 is exactly the distance that the squeezing disk 22 completes squeezing the circular sponge 25 .

[0132] As a technical optimization solution of the present invention: the liquid level sensor assembly includes:

[0133] The liquid level port 26 is provided on the extrusion plate 22;

[0134] A ring 27 is fixedly connected to the inner wall of the liquid level port 26;

[0135] A sealing plate 28 is disposed on the ring 27;

[0136] A counterweight 29 is fixedly connected to the bottom of the sealing plate 28;

[0137] It should be understood that when the extrusion plate rises, it applies pressure to the sealing plate 28, so that the sealing plate 28 is properly embedded in the liquid level port 26, thereby achieving a sealing effect on the port, which is conducive to ensuring that the liquid can be smoothly transported upward without leakage. On the contrary, if it is necessary to take out the backup water, the extrusion plate will accumulate a certain amount of water at its lower part during its descending stage. The force of this water will drive the sealing plate 28 to move upward, thereby reconnecting the upper and lower parts of the extrusion plate. This linkage mechanism ensures that the liquid can smoothly flow to the top through the opened liquid level port 26, thereby promoting the continuity and efficiency of the entire process. This design ensures that even if there is a problem with the initial sampling, the backup water quality sample retained in advance can still be used for re-inspection, ensuring the reliability and opportunity of the detection.

[0138] like Figure 1 A control method of a water quality detection device based on an unmanned boat is shown, and the control method comprises the following steps:

[0139] The controller 2 receives the flow rate slowing down information obtained by the detection unit;

[0140] The controller 2 generates first control information according to the flow rate slowing down information;

[0141] The controller 2 sends the first control information to the motor 10 to control the motor 10 to start.

[0142] As a technical optimization solution of the present invention: it also includes:

[0143] The controller 2 generates the second control information while generating the first control information;

[0144] The controller 2 sends the second control information to the solenoid valve 8 to control the solenoid valve 8 to close.

[0145] As a technical optimization solution of the present invention: it also includes:

[0146] The controller 2 obtains the work completion information of the motor 10;

[0147] The controller 2 generates third control information according to the work completion information of the motor 10;

[0148] The controller 2 sends the third control information to the solenoid valve 8 to control the solenoid valve 8 to open.

[0149] Working principle of the present invention:

[0150] After the hull 1 is pushed to move to the target waters by the propulsion component, the water quality sampling and detection component is pushed to slowly move down to the predetermined depth of the waters by the propulsion component. Subsequently, the water quality sampling and detection component begins to sample the water quality. At the same time, during the sampling process, the floating algae removal component is deployed at the front end of the sampling channel to effectively block impurities such as phytoplankton and aquatic plants to prevent them from invading the sampling process and affecting the accuracy of the analysis. In the sampling operation, the detection unit will detect the sampling situation of the water quality sampling and detection component in real time. If water ingress is detected during the sampling process, If the flow rate is lower than the preset threshold, it is inferred that there is a risk of blockage in the water quality sampling and detection component. At this time, the floating algae sweeping component is controlled to start rotating, and then the floating algae and water plants attached to it are driven through the floating algae sweeping component to separate the blockages from the sampling flow channel of the water quality sampling and detection component. On the one hand, it helps to prevent these impurities from accumulating at the sampling port, increasing the difficulty of sampling. On the other hand, it also ensures that the blockage can be removed as a whole by the floating algae sweeping component, which helps prevent it from penetrating the sampling channel in the form of tiny fragments after breaking and contaminating the sample, thereby ensuring the smoothness of the sampling process and the authenticity and effectiveness of the sample.

[0151] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A water quality detection device based on an unmanned boat, comprising a hull (1), the hull (1) being provided with a propulsion assembly, the propulsion assembly being used to propel the hull (1) to move, the hull (1) being fixedly connected with a controller (2), characterized in that: Also includes: A support frame (3) fixedly mounted between two side walls of the hull (1); A sleeve (4) is fixedly mounted on the support frame (3); Water quality sampling and testing components, used to sample water areas at designated locations; A pushing component, arranged on the outer wall of the sleeve (4), used to push the water quality sampling and detection component downward to a specified depth in the water area; A detection unit, used for obtaining flow rate slowing information; A floating algae cleaning component, after the detection unit obtains the flow rate slowing information, is used to completely clean the floating algae that will be entangled on the water quality sampling and detection component to prevent the floating algae from breaking and entering the interior of the water quality sampling and detection component; A sampling rod (6), the sampling rod (6) being slidably connected to the interior of the sleeve (4); A sampling cylinder (7) fixedly connected to the end of the sampling rod (6); The floating algae removal component comprises: A mounting frame (9) fixedly mounted on the end of the sampling tube (7); A motor (10) is fixedly mounted on the mounting frame (9); A turntable (11) is rotatably connected to the bottom of the sampling tube (7), and the turntable (11) is fixedly connected to the outer wall of the output shaft of the motor (10); Two bearing plates (12) are symmetrically fixedly connected to the outer wall of the rotating disk (11); Two first fine interception nets (13) are respectively rotatably connected to ends of the two supporting plates (12) that are away from each other; Two tension springs (14) are respectively fixedly connected between the support plate (12) and the first fine interception net (13) at corresponding positions; Two first chutes (15) are respectively provided on the side walls of the two first fine interception nets (13); Two arc-shaped intercepting blocks (16) are symmetrically fixedly connected to the outer wall of the sampling tube (7), and the arc-shaped intercepting blocks (16) are slidably connected to the first sliding groove (15).

2. The water quality detection device based on an unmanned boat according to claim 1, characterized in that: The water quality sampling and detection component comprises: A flow suction component, the flow suction component being arranged at the top of the sampling tube (7) and being used to guide water flow to smoothly enter the interior of the sampling tube (7) to achieve water collection; Two groups of sampling ports are symmetrically arranged on the outer wall of the sampling tube (7), and a solenoid valve (8) is fixedly installed inside each sampling port; The pushing assembly is used to push the sampling rod (6) to slide inside the sleeve (4).

3. The water quality detection device based on an unmanned boat according to claim 1 is characterized in that: Also includes: A plurality of needles (17) are respectively fixedly connected to the outer wall of the first fine interception net (13).

4. The water quality detection device based on an unmanned boat according to claim 3 is characterized in that: Also includes: Two connecting plates (18) are rotatably connected to the side walls of the two first fine interception nets (13) respectively; Two second fine interception nets (19) are respectively fixedly connected to the side walls of the two connecting plates (18), and the two second fine interception nets (19) are both slidably connected to the sampling tube (7); Two second chutes (20) are respectively provided on the side walls of the two second fine interception nets (19).

5. The water quality detection device based on an unmanned boat according to claim 1, characterized in that: Also includes: A threaded rod (21) fixedly connected to the output shaft end of the motor (10), and the threaded rod (21) is located inside the sampling tube (7); A squeeze plate (22) threadedly connected to the outer wall of the threaded rod (21); A plurality of groups of liquid level sensor components are arranged on the extrusion plate (22); A circular plate (23), the circular plate (23) being embedded in the interior of the sampling tube (7); A plurality of one-way valves (24) are fixedly connected to the circular plate (23); The circular sponge body (25) is fixedly connected to the bottom of the circular plate (23).

6. The water quality detection device based on an unmanned boat according to claim 5, characterized in that: The liquid level sensor assembly comprises: A liquid level port (26) is provided on the extrusion plate (22); A circular ring (27) fixedly connected to the inner wall of the liquid level port (26); A sealing plate (28) disposed on the circular ring (27); A counterweight (29) is fixedly connected to the bottom of the sealing plate (28).

7. A control method for a water quality detection device based on an unmanned ship, applicable to the water quality detection device based on an unmanned ship according to claim 2, characterized in that: The control method comprises the following steps: The controller (2) receives the flow rate reduction information obtained by the detection unit; The controller (2) generates first control information according to the flow rate reduction information; The controller (2) sends first control information to the motor (10) to control the motor (10) to start.

8. The control method of the water quality detection device based on an unmanned boat according to claim 7, characterized in that: Also includes: The controller (2) generates the second control information while generating the first control information; The controller (2) sends second control information to the solenoid valve (8) to control the solenoid valve (8) to close.

9. The control method of the water quality detection device based on an unmanned boat according to claim 8, characterized in that: Also includes: The controller (2) obtains work completion information of the motor (10); The controller (2) generates third control information according to the work completion information of the motor (10); The controller (2) sends third control information to the solenoid valve (8) to control the solenoid valve (8) to open.

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