A sampling device for river deep water environment monitoring and a control method thereof

Abstract

The application discloses a sampling device for river deep water environment monitoring, which comprises a floating mechanism, a weight block and a sampling mechanism. The floating mechanism is arranged on the river surface and is provided with a solar panel at the top for power supply. A photographing module is arranged above the solar panel, and a control module is arranged in the floating mechanism. The weight block is arranged at the bottom of the river and is connected with the floating mechanism through a center pipe. A strip hole extending upward and downward is formed in the left side of the center pipe. The sampling mechanism is fixedly connected with the center pipe and is arranged between the floating mechanism and the weight block. The device and the control method are used for collecting river water samples of different water layers. The water flow is distributed through the drainage hole by using the water pump to drive the sampling box to sink, and the bottom sediments of the river are not washed up, so that the influence of the water sample is avoided. The sinking depth of the sampling mechanism is controlled by the pipe collecting and releasing. The river water of different depths is periodically sampled according to the requirement. The sampling process does not stir the bottom sediments, and the sampled river water can truly reflect the water quality data.

Description

Technical Field

[0001] This invention relates to the technical field of environmental monitoring, specifically to a sampling device and its control method for deep-water environmental monitoring of rivers. Background Technology

[0002] Water environment monitoring focuses on the water environment and uses physical, chemical, and biological techniques to conduct qualitative, quantitative, and systematic comprehensive analysis of pollutants and their related components in order to explore and study the changing patterns of water quality. It mainly focuses on the monitoring of urban rivers. In order to ensure that the monitoring data can accurately reflect the current status of water quality and predict the development trend of water pollution, the water environment monitoring data should be representative, accurate, precise, parallel, repeatable, complete, and comparable. River water sampling includes water quality sampling at different depths.

[0003] In existing technologies, water quality sampling of deep river layers is usually carried out by hoisting and releasing the sampling device. This process can easily disturb the sediment at the bottom of the river, affecting the water quality data and making it impossible to obtain accurate data. In addition, such sampling equipment often requires time to install and debug, which is time-consuming and labor-intensive. Therefore, we propose a sampling device that can be permanently stationed in the river. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a sampling device and control method for deep-water environmental monitoring of rivers. The sampling device and control method for deep-water environmental monitoring of rivers are permanently installed in the river, can be used for a long time after a one-time installation, and can sample river water at different depths as needed. Sampling can also be carried out in stages. The sampling process will not disturb the sediment at the bottom of the water, and the sampled river water can accurately reflect the water quality data.

[0005] To achieve the above objectives, the present invention provides a sampling device for monitoring deep-water river environments, comprising:

[0006] A floating mechanism that floats on the river surface, with a solar panel on top for power supply, a camera module above the solar panel, and a control module inside;

[0007] A weighted block is set at the bottom of the river and connected to the floating mechanism through a central tube. The left side of the central tube has a strip-shaped hole that extends vertically.

[0008] The sampling mechanism is fixedly connected to the central tube and is disposed between the floating mechanism and the load-bearing block for sampling river water in the river.

[0009] The control module in the floating mechanism is used to control the up-and-down movement of the sampling mechanism in the water.

[0010] In a preferred embodiment of the present invention, the floating mechanism 4 includes: a floating disk 41, a foam ring 42, a solar panel 43, a cavity 44, a vertical plate 45, a take-up roller 46, a servo motor 47, a water pipe 48, a water cavity 49, a first tee pipe 410, a movable joint 411, a first water pump 412, a second water pump 413, a first connecting pipe 414, a second pumping pipe 415, a second connecting pipe 416, a first check valve 417, a solenoid valve 418, and a packaging assembly a. The central tube 2 extends through the central through-hole of the floating disk 41 to the floating... On the upper side of the floating disk 41, the upper surface of the foam ring 42 is bonded to the edge of the lower surface of the floating disk 41. A solar panel 43 is installed on the upper surface of the floating disk 41. A cavity 44 is formed inside the floating disk 41. Two upright plates 45 are respectively fixedly connected to the bottom wall of the cavity 44. A take-up roller 46 is movably installed between the two upright plates 45. A servo motor 47 is fixedly installed on the front side of the upright plate 45. The servo motor 47 is fixedly connected to the take-up roller 46 to drive its rotation. A water pipe 48 is wound around the outside of the take-up roller 46. A water cavity 49 is provided on the rear side of the 46. One end of the water pipe 48 passes through the outer wall of the take-up roller 46 and communicates with the water cavity 49. The other end of the water pipe 48 extends downward through the strip hole 3. One end of the three-way pipe 410 is movably connected to the water cavity 49 through the movable joint 411. The first water pump 412 and the second water pump 413 are both fixedly installed on the bottom wall of the cavity 44 and are respectively located on the left and right sides of the central pipe 2. The outlet end of the first water pump 412 is fixedly connected to one end of the connecting pipe 414. The connecting pipe 414 is equipped with a one-way valve 417. The first water pump 412... The inlet end of 412 is fixedly connected to one end of the pumping pipe 415. The other end of the pumping pipe 415 passes through the float plate 41 to the lower side of the float plate 41. The inlet end of the second water pump 413 is fixedly connected to one end of the second connecting pipe 416. The second connecting pipe 416 is equipped with a solenoid valve 418. The other ends of the first connecting pipe 414 and the second connecting pipe 416 are respectively fixedly connected to the other two ends of the first three-way pipe 410. The encapsulation component a is set on the right side of the cavity 44. The camera module 14 is installed on the upper surface of the float plate 41 at the position corresponding to the central pipe 2.

[0011] In a preferred embodiment of the present invention: the sampling mechanism 5 includes a sampling box 51, a sleeve 52, an arc-shaped filter screen 53, an isolation ring 54, an annular hole 55, a second tee pipe 56, a first connecting pipe 57, a second connecting pipe 58, a second one-way valve 59, a third one-way valve 510, an annular groove 511, an annular groove 512, a rotating ring 513, an annular water tank 514, a drain hole 515, and an annular disc 516. The sampling box 51 has a sleeve 52 in its center, and the central tube 2 is inserted into the sleeve 52. The sampling box 51 is disc-shaped. An arc-shaped filter screen 53 is fixedly installed in the annular hole 55 on the side wall of the sampling box 51. The upper and lower walls of the sampling box 51 are fixedly connected by the isolation ring 54. The other end of the water pipe 48 extends through the sleeve 52 into the sampling box 51 and is located inside the isolation ring 54. The other end of the water pipe 48 is fixedly connected to the second tee pipe 56. The other two ends of the two-way pipe 56 are respectively fixedly connected to the outlet end of the connecting pipe 57 and the inlet end of the connecting pipe 58. The inlet end of the connecting pipe 57 passes through the isolation ring 54 to the space between the isolation ring 54 and the arc-shaped filter screen 53. A one-way valve 59 is installed on the connecting pipe 57. A one-way valve 510 is installed on the connecting pipe 58. An annular groove 511 is opened on the upper surface of the sampling box 51. A rotating ring 513 is sleeved in the annular groove 512 at the bottom of the inner side wall of the annular groove 511. An annular disk 516 is set in the annular groove 511, and the inner wall of the annular disk 516 is fixedly connected to the outer wall of the rotating ring 513. An annular water trough 514 is coaxially opened on the bottom wall of the annular groove 511. The outlet end of the connecting pipe 58 passes through the upper wall of the sampling box 51 and communicates with the annular water trough 514. A drain hole 515 is opened on the annular disk 516.

[0012] In a preferred embodiment of the present invention: the encapsulation component a includes a U-shaped partition a1, a water injection hole a2, a square hole a3, a push plate a4, an arc-shaped rack a5, a regulating motor a6, a regulating gear a7, a sampling bottle a8, a water inlet a9, a sealing silicone nozzle a10, a cross hole a11, a guide rod a12, a movable plate a13, a mounting plate a14, a linear guide rail a15, a water injection nozzle a16, and a movable door a17. The U-shaped partition a1 is fixedly connected to the floating plate 4. A separate chamber is isolated on the right side of the U-shaped partition a1 within the floating plate 41. A water injection hole a2 is located in the middle of the left wall of the U-shaped partition a1, and a square hole a3 is located in the middle of the rear wall of the U-shaped partition a1. A push plate a4 is located inside the U-shaped partition a1, and one end of an arc-shaped rack a5 is fixedly connected to the rear side of the push plate a4. The other end of the arc-shaped rack a5 extends through the square hole a3 to the rear side of the U-shaped partition a1. A regulating motor a6 is fixedly installed on the rear wall of the U-shaped partition a1. The regulating motor a6... The control gear a7 meshes with the arc-shaped rack a5. The sampling bottle a8 is placed inside the U-shaped partition a1. A water inlet a9 is provided on the left side of the sampling bottle a8. A sealing silicone nozzle a10 is bonded inside the water inlet a9. A cross hole a11 is provided in the center of the sealing silicone nozzle a10. Four ring-shaped guide rods a12 are fixedly connected to the left wall of the U-shaped partition a1 at the position corresponding to the water inlet a2. The four guide rods a12 are respectively inserted into the round holes at the four corners of the movable plate a13. The left wall of the U-shaped partition a1 and An installation plate a14 is fixedly connected to the upper side of the movable plate a13. A linear guide rail a15 is fixedly connected to the lower surface of the installation plate a14. A slider on the linear guide rail a15 is fixedly connected to the top of the movable plate a13. The water injection nozzle a16 is fixedly installed in the middle of the movable plate a13 and points to the water injection hole a2. The water injection nozzle a16 is fixedly connected to the water outlet end of the water pump 413. A movable door a17 is provided on the side wall of the floating plate 41 at the position corresponding to the front half of the U-shaped partition a1.

[0013] In a preferred embodiment of the present invention: the annular groove 511 and the sleeve 52 are coaxial, the number of drainage holes 515 is not less than four, and the drainage holes 515 are arranged in a ring with reference to the axis of the sleeve 52, and the inclination angle along the tangent direction of its rotation is thirty degrees.

[0014] In a preferred embodiment of the present invention, a connecting ring 8 is fixedly connected to the other end of the water pipe 48 and to the inner side of the sleeve 52. The connecting ring 8 is fixedly connected to the inner wall of the sleeve 52 by two connecting ropes 9.

[0015] As a preferred embodiment of the present invention: a spherical filter screen 10 is installed at the water inlet end of the water pumping pipe 415.

[0016] In a preferred embodiment of the present invention: the right side of the central tube 2 protrudes outward in a conical shape, and a scraper 11 is provided on the lower surface of the sampling box 51 and on the right side of the central tube 2. The scraper 11 is attached to the right side of the central tube 2, and a debris removal blade 12 is fixedly connected between the top of the right side of the scraper 11 and the lower surface of the sampling box 51. The debris removal blade 12 is U-shaped and its inner side points towards the central tube 2.

[0017] In a preferred embodiment of the present invention, the number of sampling bottles a8 is five, and adjacent sampling bottles a8 are bonded together with double-sided adhesive.

[0018] On the other hand, a control method for a sampling device used for deep-water environmental monitoring in rivers includes the following steps:

[0019] Step 1: Introduce depth value H c H c =H1-H2-H3, where H1 is the value obtained by the camera module 14, H2 is the sum of the heights of the floating plate 41 and the foam ring 42, and H3 is the height of the weight block 1. From this, the depth of the water area where the equipment is located can be obtained, which serves as a reference range for the diving depth of the sampling mechanism 5.

[0020] Step 2: Set the hovering depth H of sampling mechanism 5 x And input it into control module 13;

[0021] Step 3: The control module 13 obtains the current depth value H of the sampling mechanism 5 by releasing the number of revolutions of the take-up roller 46 through the servo motor 47. n t;

[0022] Step 4, Diving Depth Control, refers to: Where ut is the control value generated by the system algorithm, K P K I and K D These are the proportional coefficient, integral coefficient, and differential coefficient, respectively, and Et is the depth error of the equipment, Et = H x -H n t,H x H is the hovering depth set for the system. n t represents the current depth value, and the control module 13 will set the hovering depth H. x Compared with the current depth value H n The depth error Et is obtained by comparison. If the depth error Et is less than the set value, the fixed depth control is canceled; otherwise, the water pump 412 is controlled to supply water, the servo motor 47 releases the water pipe 48 of the corresponding length, and the process returns to step 2 to enter the next cycle of depth detection.

[0023] Step 5: After the sampling mechanism 5 is lowered, the linear guide rail a15 pushes the water injection nozzle a16 into the sealing silicone port a10. The water pump 413 works to draw river water and inject it into the sampling bottle a8. Then the water injection nozzle a16 disengages from the sealing silicone port a10, and the control motor a6 works to push the sampling bottle a8 to switch, thus completing the sampling.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. The sampling device and control method for deep-water environmental monitoring of rivers can be permanently stationed in rivers, can be used for a long time after a single installation, can sample river water at different depths as needed, and can also be sampled in stages. The sampling process will not disturb the sediment at the bottom of the water, and the sampled river water can accurately reflect the water quality data.

[0026] 2. The sampling device and control method for deep-water environmental monitoring of rivers are simple and reliable in overall design. The design of the encapsulation components allows the device to collect and store river water samples in stages during long-term operation. Samples can be collected and stored as needed, and staff only need to replace the sampling bottles periodically. This is suitable for the device's operation in rivers. The sampling mechanism is designed to collect river water samples from different water layers. By using the design of the annular disk and a water pump to drive the water flow through the drainage hole, the sampling box can sink without stirring up sediment at the bottom of the river, thus avoiding the influence of the water sample. The sinking depth of the sampling mechanism can be controlled by the extension and retraction of the tube. Attached Figure Description

[0027] Figure 1 This is a front view of the present invention;

[0028] Figure 2 For the present invention Figure 1 AA section diagram;

[0029] Figure 3 This is a top view of the sampling box of the present invention;

[0030] Figure 4 This is a cross-sectional view of the present invention;

[0031] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0032] Figure 6 For the present invention Figure 4 Enlarged view of point B in the middle;

[0033] Figure 7 For the present invention Figure 4 Enlarged view of point C in the middle;

[0034] Figure 8 For the present invention Figure 4Enlarged view at point D;

[0035] Figure 9 This is a cross-sectional view of the central tube of the present invention;

[0036] Figure 10 This is a schematic diagram of the system structure of the present invention.

[0037] In the diagram: 1. Weight block, 2. Central tube, 3. Strip hole, 4. Floating mechanism, 41. Floating disc, 42. Foam ring, 43. Solar panel, 44. Cavity, 45. Vertical plate, 46. Retracting roller, 47. Servo motor, 48. Water pipe, 49. Water cavity, 410. T-joint, 411. Movable joint, 412. Water pump, 413. Water pump, 414. Connecting pipe, 415. Pumping pipe, 416. Connecting pipe, 417. One-way valve, 418. Solenoid valve, a. Encapsulation component, a1. U-shaped partition, a2. Water inlet, a3. Square hole, a4. Push plate, a5. Arc rack, a6. Control motor, a7. Control gear, a8. Sampling bottle, a9. Water inlet, a10. Sealing silicone port, a11. A12 Guide rod, A13 Movable plate, A14 Mounting plate, A15 Linear guide rail, A16 Water injection nozzle, A17 Movable door, 5 Sampling mechanism, 51 Sampling box, 52 Sleeve, 53 Arc-shaped filter screen, 54 Isolation ring, 55 Annular hole, 56 T-pipe II, 57 Connecting pipe I, 58 Connecting pipe II, 59 One-way valve II, 510 One-way valve III, 511 Annular slot, 512 Annular groove, 513 Rotating ring, 514 Annular water tank, 515 Drain hole, 516 Annular disc, 6 Drain pipe, 7 Drain hole, 8 Connecting ring, 9 Connecting rope, 10 Spherical filter screen, 11 Scraper, 12 Impurity removal blade, 13 Control module, 14 Camera module. Detailed Implementation

[0038] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0039] Please see Figure 1-9 This invention provides a technical solution: a sampling device and its control method for deep-water environmental monitoring of rivers, including a load block 1, a central tube 2 fixedly connected to the middle of the upper surface of the load block 1, a vertically extending strip hole 3 opened on the left side of the central tube 2, a floating mechanism 4 provided on the central tube 2, and a sampling mechanism 5 provided on the central tube 2 and below the floating mechanism 4, and a control module 13 provided inside the floating mechanism 4, the control module 13 being powered by a solar panel 43 and a battery, the control module 13 communicating with an Internet of Things server through a wireless communication module, and controlling the sampling mechanism 5 to dive to a fixed depth by using the floating mechanism 4 to control the diving depth of the sampling mechanism 5.

[0040] The central tube 2 can be made of environmentally friendly rigid pipes such as PVC pipes to prevent the floating mechanism 4 from drifting with the current and achieve permanent sampling. The distance between the floating disk 41 and the load block 1 can be determined based on the length of the central tube 2 above the floating disk 41. Scales can be painted on the central tube 2, and a camera module can be installed on the upper surface of the floating disk 41 for sampling. Further details are omitted.

[0041] The floating mechanism 4 includes a floating disc 41, a foam ring 42, a solar panel 43, a cavity 44, a vertical plate 45, a take-up roller 46, a servo motor 47, a water pipe 48, a water cavity 49, a first tee pipe 410, a movable joint 411, a first water pump 412, a second water pump 413, a first connecting pipe 414, a second pumping pipe 415, a second connecting pipe 416, a first check valve 417, a solenoid valve 418, and a sealing assembly a. A central tube 2 extends through a through-hole in the center of the floating disc 41 to the upper side of the floating disc 41. The upper surface of the foam ring 42 is bonded to the edge of the lower surface of the floating disk 41. The solar panel 43 is installed on the upper surface of the floating disk 41. A cavity 44 is opened inside the floating disk 41. Two upright plates 45 are fixedly connected to the bottom wall of the cavity 44. The pipe take-up roller 46 is movably installed between the two upright plates 45. The servo motor 47 is fixedly installed on the front of the upright plate 45 located on the front side. The servo motor 47 is fixedly connected to the pipe take-up roller 46 to drive its rotation. The water pipe 48 is wound around the outside of the pipe take-up roller 46. A water cavity 49 is provided on the rear side of the take-up roller 46. One end of the water pipe 48 passes through the outer wall of the take-up roller 46 and communicates with the water cavity 49. The other end of the water pipe 48 extends downward through the strip hole 3. One end of the three-way pipe 410 is movably connected to the water cavity 49 through the movable joint 411. Water pump 412 and water pump 413 are both fixedly installed on the bottom wall of the cavity 44 and are respectively located on the left and right sides of the central pipe 2. The water outlet end of water pump 412 is fixedly connected to one end of connecting pipe 414. The upper part is equipped with a one-way valve 417. The water inlet end of the water pump 412 is fixedly connected to one end of the water pumping pipe 415. The other end of the water pumping pipe 415 passes through the float plate 41 to the lower side of the float plate 41. The water inlet end of the water pump 413 is fixedly connected to one end of the connecting pipe 416. The connecting pipe 416 is equipped with a solenoid valve 418. The other ends of the connecting pipe 414 and the connecting pipe 416 are respectively fixedly connected to the other two ends of the three-way pipe 410. The encapsulation component a is located on the right side of the cavity 44.

[0042] The design of the encapsulation component A enables this device to collect and store river water samples in stages during long-term operation. Samples can be collected and stored as needed, and staff only need to replace the sampling bottle A8 once every so often, which is suitable for the device's operation in rivers.

[0043] The sampling mechanism 5 includes a sampling box 51, a sleeve 52, an arc-shaped filter screen 53, an isolation ring 54, an annular hole 55, a second tee pipe 56, a first connecting pipe 57, a second connecting pipe 58, a second check valve 59, a third check valve 510, an annular groove 511, an annular groove 512, a rotating ring 513, an annular water tank 514, a drain hole 515, and an annular disc 516. The sampling box 51 has a sleeve 52 in its center, with a central tube 2 inserted inside. The sampling box 51 is disc-shaped. An arc-shaped filter screen 53 is fixedly installed in the annular hole 55 on the side wall of the sampling box 51. The upper and lower walls of the sampling box 51 are fixedly connected by an isolation ring 54. The other end of a water pipe 48 extends through the sleeve 52 into the sampling box 51 and is located inside the isolation ring 54. The other end of the water pipe 48 is fixedly connected to a second tee pipe 56. The other two ends are respectively fixedly connected to the outlet end of the connecting pipe 1 57 and the inlet end of the connecting pipe 2 58. The inlet end of the connecting pipe 1 57 passes through the isolation ring 54 to the space between the isolation ring 54 and the arc-shaped filter screen 53. A one-way valve 2 59 is installed on the connecting pipe 1 57 and a one-way valve 3 510 is installed on the connecting pipe 2 58. An annular groove 511 is opened on the upper surface of the sampling box 51. A rotating ring 513 is sleeved in the annular groove 512 at the bottom of the inner side wall of the annular groove 511. An annular disk 516 is set in the annular groove 511, and the inner wall of the annular disk 516 is fixedly connected to the outer wall of the rotating ring 513. An annular water trough 514 is coaxially opened on the bottom wall of the annular groove 511. The outlet end of the connecting pipe 2 58 passes through the upper wall of the sampling box 51 and communicates with the annular water trough 514. A drain hole 515 is opened on the annular disk 516.

[0044] The sampling mechanism 5 is designed to collect river water samples from different water layers. By utilizing the design of the annular disk 516, the water pump 412 drives the water flow through the drain hole 515 to help the sampling box 51 sink without stirring up sediment at the bottom of the river, thus avoiding the influence of the water sample. The sinking depth of the sampling mechanism 5 can be controlled by the extension and retraction of the retraction pipe 46.

[0045] The encapsulation component a includes a U-shaped partition a1, a water injection hole a2, a square hole a3, a push plate a4, an arc-shaped rack a5, a regulating motor a6, a regulating gear a7, a sampling bottle a8, a water inlet a9, a sealing silicone nozzle a10, a cross hole a11, a guide rod a12, a movable plate a13, a mounting plate a14, a linear guide rail a15, a water injection nozzle a16, and a movable door a17. The U-shaped partition a1 is fixedly connected to the right side of the floating plate 41 and isolates the area within the floating plate 41. A separate chamber is formed. A water injection hole a2 is located in the middle of the left wall of the U-shaped partition a1. A square hole a3 is located in the middle of the rear wall of the U-shaped partition a1. A push plate a4 is positioned inside the U-shaped partition a1. One end of an arc-shaped rack a5 is fixedly connected to the rear side of the push plate a4. The other end of the arc-shaped rack a5 extends through the square hole a3 to the rear side of the U-shaped partition a1. A regulating motor a6 is fixedly installed on the rear wall of the U-shaped partition a1. The regulating gear a7 on the regulating motor a6 is connected to the arc-shaped rack a2. 5. Engagement: Sampling bottle a8 is placed inside U-shaped partition a1. A water inlet a9 is located on the left side of sampling bottle a8, and a sealing silicone nozzle a10 is bonded inside the water inlet a9. A cross-shaped hole a11 is located in the center of the sealing silicone nozzle a10. Four ring-shaped guide rods a12 are fixedly connected to the left wall of U-shaped partition a1, corresponding to the position of the water inlet a2. The four guide rods a12 are respectively inserted into the round holes at the four corners of the movable plate a13. The left wall of U-shaped partition a1 is in a movable position. A mounting plate a14 is fixedly connected to the upper side of plate a13. A linear guide rail a15 is fixedly connected to the lower surface of mounting plate a14. A slider on the linear guide rail a15 is fixedly connected to the top of movable plate a13. A water injection nozzle a16 is fixedly installed in the middle of movable plate a13 and points to water injection hole a2. The water injection nozzle a16 is fixedly connected to the outlet end of water pump 413. A movable door a17 is provided on the side wall of floating plate 41 at the position corresponding to the front half of U-shaped partition a1.

[0046] By utilizing the design of the encapsulation mechanism a, automated sampling and storage of samples can be achieved, enabling periodic collection and storage of samples from different water layers. The equipment can operate independently when unattended, and staff can periodically remove the sampling bottle a8. The operation is convenient, and the switching between different sampling bottles a8 is controlled by the regulating motor a6. The floating plate 41 is also equipped with a control board and a communication module to enable staff to remotely operate the equipment. This is a well-known technology in this field and will not be elaborated further.

[0047] Four drain pipes 6 are fixedly connected between the upper and lower walls of the sampling box 51. Drain holes 7 are opened on the upper and lower walls of the sampling box 51 at the positions corresponding to the drain pipes 6. The four drain pipes 6 are arranged in a ring with the axis of the sleeve 52 as a reference.

[0048] The design of the drain pipe 6 can provide separation when the sampling box 51 sinks, reducing its sinking resistance.

[0049] The annular groove 511 and the sleeve 52 are coaxial. There are no fewer than four drainage holes 515, which are arranged in a ring with the sleeve 52 as a reference. The inclination angle of the drainage holes 515 along their rotational tangent is thirty degrees.

[0050] Water pump 412 supplies water and drives the annular disc 516 to rotate through the inclined drain hole 515, improving its driving efficiency and helping the sampling box 51 to sink. When the sampling box 51 floats, it is pulled by the water pipe 48.

[0051] There are five sampling bottles a8, and adjacent sampling bottles a8 are bonded together with double-sided tape. The push plate a4 is also bonded to the sampling bottles a8 with double-sided tape.

[0052] A connecting ring 8 is fixedly connected to the other end of the water pipe 48 and inside the sleeve 52. The connecting ring 8 is fixedly connected to the inner wall of the sleeve 52 by two connecting ropes 9.

[0053] The design of the connecting ring 8 and the connecting rope 9 ensures that when the water pipe 48 pulls the sampling mechanism 5, it applies force to the sleeve 52, thus avoiding any impact on the seal of the water pipe 48.

[0054] A spherical filter screen 10 is installed at the inlet end of the water pump 415 to filter impurities in the water.

[0055] The right side of the central tube 2 protrudes outward in a cone shape. A scraper 11 is provided on the lower surface of the sampling box 51 and on the right side of the central tube 2. The scraper 11 is attached to the right side of the central tube 2. A debris removal blade 12 is fixedly connected between the top of the right side of the scraper 11 and the lower surface of the sampling box 51. The debris removal blade 12 is U-shaped and its inner side points towards the central tube 2.

[0056] When the equipment is installed, the water flow direction is opposite to the direction of the conical protrusion of the central pipe 2. When the equipment is stationary, the debris blocked by the central pipe 2 will come into contact with the protrusion on the right side of the central pipe 2. When the sampling mechanism 5 moves down, the debris can be pushed away by the scraper 11 and cut off by the debris removal blade 12 to avoid affecting the operation of the equipment.

[0057] Please see Figure 1-10 A control method for a sampling device used for deep-water environmental monitoring in rivers, comprising the following steps:

[0058] Step 1: Introduce depth value H c H c =H1-H2-H3, where H1 is the value obtained by the camera module (14), H2 is the sum of the heights of the floating plate 41 and the foam ring 42, and H3 is the height of the weight block 1. Thus, the depth of the water area where the equipment is located can be obtained, which serves as a reference range for the diving depth of the sampling mechanism 5.

[0059] Step 2: Set the hovering depth H of sampling mechanism 5 x And input it into control module 13;

[0060] Step 3: The control module 13 obtains the current depth value H of the sampling mechanism 5 by releasing the number of revolutions of the take-up roller 46 through the servo motor 47. n (t);

[0061] Step 4: Control module 13 will adjust the hovering depth H. x Compared with the current depth value H n (t) is compared to obtain the depth error E(t). When the depth error E(t) is less than the set value, the fixed depth control is canceled; otherwise, the water pump 412 is controlled to supply water, the servo motor 47 releases the water pipe 48 of the corresponding length, and the process returns to step 2 to enter the depth detection of the next cycle.

[0062] Step 5: After the sampling mechanism 5 is lowered, the linear guide rail a15 pushes the water injection nozzle a16 into the sealing silicone port a10. The water pump 413 works to draw river water and inject it into the sampling bottle a8. Then the water injection nozzle a16 disengages from the sealing silicone port a10, and the control motor a6 works to push the sampling bottle a8 to switch, thus completing the sampling.

[0063] When the sampling device and its control method for deep-water environmental monitoring of this river are in operation, in standby mode, the sampling mechanism 5 is located inside the foam ring 42. When sampling is required, the take-up roller 46 releases the tube, the solenoid valve 418 closes, and the water pump 1 412 pumps water through the connecting pipe 2 58 to cause the sampling box 51 to sink. The sinking depth can be roughly obtained by the number of turns of the take-up roller 46 releasing the tube. After reaching the required depth, the water pump 1 412 closes, the solenoid valve 418 opens, and the push plate a4 pushes the sampling bottle a8 so that its water inlet a9 is aligned with the water injection nozzle a16. The linear guide rail a15 pushes the water injection nozzle a16. 16 is inserted into the cross hole a11, water pump 2 413 is started, water is drawn from between the arc-shaped filter screen 53 and the isolation ring 54 and injected into the sampling bottle a8. After sampling is completed, water pump 2 413 is turned off, water nozzle a16 is disengaged from the cross hole a11, tube retraction roller 46 retracts the tube, and the sampling box 51 is pulled back to the inside of the foam ring 42 above the water surface. Water in the water pipe 48 is discharged by gravity. The above operation is repeated when sampling from the lower side. Push plate a4 pushes the sampling bottle a8 to switch to the next sampling bottle a8. After the sampling bottle a8 is used up, the staff takes out the sampling bottle a8 through the movable door a17.

[0064] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0065] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A sampling device for monitoring a deep water environment of a river, characterized by, Include: Floating mechanism, float on the river surface, top provided with solar panels for power supply, the solar panels above provided with photographic module, inside provided with control module; Weight block, set in the river bottom, connected with the floating mechanism through the center tube, the left side of the center tube is provided with a strip hole extending up and down; Sampling mechanism, fixedly connected with the center tube, and arranged between the floating mechanism and the weight block, for sampling river water in the river; The floating mechanism (4) includes: floating disc (41), cavity (44), vertical plate (45), pipe collecting roller (46), servo motor (47), water pipe (48), water cavity (49), three-way pipe one (410), movable joint (411), water pump one (412), water pump two (413), pipe one (414), water pump (415), the center tube (2) extends through the middle through hole of the floating disc (41) to the upper side of the floating disc (41), the cavity (44) is opened in the floating disc (41), two vertical plates (45) are fixedly connected in the inner bottom wall of the cavity (44), the pipe collecting roller (46) is movably installed between the two vertical plates (45), the servo motor (47) is fixedly installed on the front side of the vertical plate (45), the servo motor (47) is fixedly connected with the pipe collecting roller (46) to drive its rotation, the water pipe (48) is wound on the outside of the pipe collecting roller (46), the rear side of the pipe collecting roller (46) is provided with a water cavity (49), one end of the water pipe (48) passes through the outer wall of the pipe collecting roller (46) and communicates with the water cavity (49), the other end of the water pipe (48) extends downward through the strip hole (3), one end of the three-way pipe one (410) communicates with the water cavity (49) through the movable joint (411), the water pump one (412) and the water pump two (413) are fixedly installed on the bottom wall of the cavity (44) and are separately arranged on the left and right sides of the center tube (2), one end of the pipe one (414) is fixedly communicated with the water outlet end of the water pump one (412), one end of the water pump (415) is fixedly communicated with the water inlet end of the water pump one (412), the other end of the water pump (415) passes through the floating disc (41) to the lower side of the floating disc (41). The sampling mechanism (5) comprises a sampling box (51), a sleeve (52), an isolation ring (54), a tee pipe two (56), a communication pipe one (57), a communication pipe two (58), an annular clamping groove (511), an annular groove (512), a rotating ring (513), an annular water tank (514), a drain hole (515) and an annular disc (516), the middle part of the sampling box (51) is provided with the sleeve (52), the center pipe (2) is inserted into the sleeve (52), the sampling box (51) is disc-shaped, the upper and lower walls in the sampling box (51) are fixedly connected through the isolation ring (54), the other end of the water pipe (48) extends into the sampling box (51) through the sleeve (52) and is on the inside of the isolation ring (54), the other end of the water pipe (48) is fixedly connected with the tee pipe two (56), the other two ends of the tee pipe two (56) are fixedly connected with the water outlet end of the communication pipe one (57) and the water inlet end of the communication pipe two (58) respectively, the upper surface of the sampling box (51) is provided with the annular clamping groove (511), the annular groove (512) in the inner side wall bottom of the annular clamping groove (511) is sleeved with the rotating ring (513), the annular disc (516) is arranged in the annular clamping groove (511), and the inner wall of the annular disc (516) is fixedly connected with the outer wall of the rotating ring (513), the bottom wall of the annular clamping groove (511) is coaxially provided with the annular water tank (514), the water outlet end of the communication pipe two (58) penetrates the upper wall of the sampling box (51) and is communicated with the annular water tank (514), and the annular disc (516) is provided with the drain hole (515). The control module in the floating mechanism is used for controlling the up-down movement of the sampling mechanism in water, and the water flow discharged through the drain hole (515) driven by the water pump one (412) can help the sampling box (51) sink.

2. The sampling device for monitoring deep water environment of a river according to claim 1, characterized in that: The floating mechanism (4) further comprises a foam ring (42), a solar panel (43), a connecting pipe two (416), a one-way valve one (417), an electromagnetic valve (418) and an encapsulation assembly (a), the upper surface of the foam ring (42) is bonded to the edge of the lower surface of the floating disc (41), the solar panel (43) is installed on the upper surface of the floating disc (41), the one-way valve one (417) is arranged on the connecting pipe one (414), one end of the connecting pipe two (416) is fixedly communicated with the water inlet end of the water pump two (413), the electromagnetic valve (418) is arranged on the connecting pipe two (416), the other end of the connecting pipe one (414) and the other end of the connecting pipe two (416) are fixedly communicated with the other two ends of the tee pipe one (410) respectively, the encapsulation assembly (a) is arranged on the right side of the cavity (44), and the photographic module (14) is installed on the upper surface of the floating disc (41) at the position corresponding to the center pipe (2).

3. The sampling device for monitoring deep water environment of a river according to claim 2, characterized in that: The sampling mechanism (5) further comprises: an arc-shaped filter screen (53), a ring-shaped hole (55), a one-way valve two (59), a one-way valve three (510), the arc-shaped filter screen (53) is fixedly installed in the ring-shaped hole (55) of the side wall of the sampling box (51), the water inlet end of the communication pipe one (57) penetrates through the isolation ring (54) to the space between the isolation ring (54) and the arc-shaped filter screen (53), and the one-way valve two (59) is installed on the communication pipe one (57), and the one-way valve three (510) is installed on the communication pipe two (58).

4. The sampling device for monitoring deep water environment of a river according to claim 3, characterized in that: The packaging assembly (a) comprises a U-shaped partition plate (a1), a water injection hole (a2), a square hole (a3), a push plate (a4), an arc-shaped rack (a5), a control motor (a6), a control gear (a7), a sampling bottle (a8), a water inlet hole (a9), a sealing silica gel port (a10), a cross hole (a11), a guide rod (a12), a movable plate (a13), a mounting plate (a14), a linear guide rail (a15), a water injection nozzle (a16) and a movable door (a17), the U-shaped partition plate (a1) is fixedly connected to the right side of the floating disc (41) to isolate a separate chamber in the floating disc (41), a water injection hole (a2) is formed in the middle of the left wall of the U-shaped partition plate (a1), a square hole (a3) is formed in the middle of the rear wall of the U-shaped partition plate (a1), the push plate (a4) is arranged on the inner side of the U-shaped partition plate (a1), one end of the arc-shaped rack (a5) is fixedly connected to the rear side of the push plate (a4), the other end of the arc-shaped rack (a5) extends to the rear side of the U-shaped partition plate (a1) through the square hole (a3), the control motor (a6) is fixedly installed on the rear wall of the U-shaped partition plate (a1), the control gear (a7) on the control motor (a6) is engaged with the arc-shaped rack (a5), the sampling bottle (a8) is placed in the U-shaped partition plate (a1), the water inlet hole (a9) is arranged on the left side of the sampling bottle (a8), the sealing silica gel port (a10) is bonded in the water inlet hole (a9), the cross hole (a11) is arranged in the middle of the sealing silica gel port (a10), four ring-shaped guide rods (a12) are fixedly connected to the position corresponding to the water injection hole (a2) of the left wall of the U-shaped partition plate (a1), the four guide rods (a12) are respectively inserted into the round holes in the four corners of the movable plate (a13), the mounting plate (a14) is fixedly connected to the left wall of the U-shaped partition plate (a1) and is located on the upper side of the movable plate (a13), the lower surface of the mounting plate (a14) is fixedly connected with the linear guide rail (a15), the slider on the linear guide rail (a15) is fixedly connected with the top of the movable plate (a13), the water injection nozzle (a16) is fixedly installed in the middle of the movable plate (a13) and points to the water injection hole (a2), the water injection nozzle (a16) is fixedly communicated with the water outlet end of the water pump two (413), and the side wall of the floating disc (41) is provided with the movable door (a17) at the position corresponding to the front half side of the U-shaped partition plate (a1).

5. The sampling device for monitoring deep water environment of a river according to claim 4, characterized in that: The annular clamping groove (511) and the sleeve (52) are coaxial, the number of the drain holes (515) is not less than four, and the drain holes (515) are arranged in a ring around the axis of the sleeve (52) and have an inclination angle of 30 degrees along the tangent direction of the rotation.

6. The sampling device for monitoring deep water environment of a river according to claim 5, characterized in that: The other end of the water pipe (48) and the position inside the sleeve (52) are fixedly connected with a connecting ring (8), and the connecting ring (8) is fixedly connected with the inner wall of the sleeve (52) through two connecting ropes (9).

7. The sampling device for monitoring deepwater environment of a river according to claim 6, characterized in that: The water inlet end of the water pumping pipe (415) is provided with a spherical filter screen (10).

8. The sampling device for monitoring deepwater environment of a river according to claim 7, characterized in that: The right side of the central pipe (2) protrudes outward in a conical shape, the lower surface of the sampling box (51) and the right side of the central pipe (2) are provided with a scraper (11), the scraper (11) is attached to the right side of the central pipe (2), the top end of the right side of the scraper (11) is fixedly connected with the lower surface of the sampling box (51), and the impurity removing blade (12) is fixedly connected between the top end of the right side of the scraper (11) and the lower surface of the sampling box (51), the impurity removing blade (12) is in a U shape and its inner side points to the central pipe (2).

9. The sampling device for monitoring deepwater environment of a river according to claim 8, characterized in that: The number of the sampling bottles (a8) is five, and the adjacent sampling bottles (a8) are adhered by double-sided adhesive tape.

10. The method of controlling a sampling device for monitoring a deepwater environment of a river according to any one of claims 4 to 9, characterized in that, The method comprises the following steps: Step 1, introducing depth value , , wherein is the value obtained from the camera module (14), is the height of the floating disc (41) and the foam ring (42), is the height of the weight block (1), thus the depth of the water where the device is located can be obtained as a reference range for the diving depth of the sampling mechanism (5); Step 2, set the hovering depth of the sampling mechanism (5) and input into the control module (13); Step 3, the control module (13) releases the number of turns of the take-up roller (46) by the servo motor (47) to obtain the current depth value of the sampling mechanism (5) ; Step 4, the submersion depth control refers to: wherein is the control value generated by the system algorithm, , and are proportional coefficient, integral coefficient, differential coefficient respectively, is the depth error of the device, is the hover depth set by the system, is the current depth value, the control module (13) compares the hover depth with the current depth value to obtain the depth error , when the depth error is less than the set value, the depth control is cancelled; otherwise, the water pump one (412) supplies water, the servo motor (47) releases the corresponding length of the water pipe (48), and returns to step 2 to enter the depth detection of the next cycle. Step 5, after the sampling mechanism (5) is lowered, the linear guide rail (a15) pushes the water injection nozzle (a16) to insert into the sealing silica gel port (a10), the water pump two (413) works to pump river water into the sampling bottles (a8), then the water injection nozzle (a16) is separated from the sealing silica gel port (a10), the control motor (a6) works to push the sampling bottles (a8) to switch, and the sampling is completed.

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