River channel water quality detection device and detection method

Abstract

The invention relates to the technical field of water quality detection, in particular to a river channel water quality detection device and method. The river channel water quality detection device comprises a driving assembly, the driving assembly can drive and replace the position of a monitoring assembly on a connecting rope, dynamic monitoring of the water quality of different areas of a river is achieved, the limitation of fixed point monitoring is broken through, and monitoring comprehensiveness and application flexibility are both considered; and more accurate and comprehensive data support is provided for water pollution detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water quality detection, in particular to a water quality detection device and method for river channels. BACKGROUND

[0002] The buoy type water quality detection device is an efficient monitoring equipment in the field of water pollution prevention and control. It realizes real-time dynamic monitoring of polluted risk areas such as rivers, lakes, reservoirs and near-shore sea areas by floating on the surface of the water body. The detection device is used for water pollution early warning, pollution tracing and treatment effect evaluation, and can accurately capture abnormal fluctuations of key pollution indicators such as pH value, dissolved oxygen, ammonia nitrogen, total phosphorus and chemical oxygen demand, providing reliable data support for water environment quality evaluation, pollution tracing and ecological protection decision-making. When in use, the device is calibrated according to the pollution characteristics of the monitored water area to ensure the detection accuracy of the sensor for the target pollutants. Then the buoy is thrown into the preset monitoring point and fixed in position by anchor chain to avoid deviation from the monitoring area due to water flow impact. After the device is started, the underwater sensor continuously collects water quality data, which is uploaded to the cloud platform in real time through the wireless transmission module. The data curve and over-limit alarm can be remotely viewed by the staff.

[0003] However, the fixed detection device using anchor chain can only carry out water quality monitoring at a single preset position, and cannot cover different areas of the river. In the river ecosystem, the water quality difference between the shore and the river center is often obvious, and relying only on monitoring data from fixed points can easily lead to one-sidedness in judging the overall water quality, and it is difficult to reflect the real distribution characteristics of river pollution. If multiple detection devices are added to obtain comprehensive data, the cost of core equipment such as buoy main body and high-precision sensor will be directly increased, and the subsequent investment cost of installation, debugging, daily maintenance and equipment fault repair of multiple points will also be increased. SUMMARY

[0004] Therefore, it is necessary to provide a water quality detection device for river channels to solve the problem of limited monitoring range caused by anchor chain fixation of the existing buoy type water quality detection device.

[0005] The above-mentioned purpose is achieved by the following technical solutions: A water quality detection device for river channels, comprising: A monitoring assembly for detecting water quality parameters at a preset point.

[0006] A floating ball capable of floating the monitoring assembly on the water surface.

[0007] A connecting rope connecting a preset fixed point and the floating ball.

[0008] a drive assembly for changing the position of the monitoring assembly on the connecting rope.

[0009] Further, the drive assembly comprises a mounting cylinder, a first winding wheel, a second winding wheel and a power source, the mounting cylinder is coaxially fixedly connected to the floating ball; the first winding wheel and the second winding wheel are both rotationally connected to the inner wall of the mounting cylinder, the connecting rope penetrates through the mounting cylinder, and the connecting rope is wound on the first winding wheel and the second winding wheel in opposite directions; the power source can drive the first winding wheel and the second winding wheel to rotate at the same speed in opposite directions, so that the mounting cylinder moves along the connecting rope.

[0010] Further, the first winding wheel and the second winding wheel are arranged in the axial direction of the mounting cylinder; the power source can also drive the first winding wheel and the second winding wheel to rotate synchronously in a first direction around the axis of the mounting cylinder, so as to tighten the connecting rope.

[0011] Further, the drive assembly further comprises a mounting ring, the mounting ring is rotationally connected to the inner wall of the mounting cylinder; the first winding wheel and the second winding wheel are both rotationally connected to the mounting ring, and the first winding wheel is located below the mounting ring, and the second winding wheel is located above the mounting ring.

[0012] Further, the drive assembly further comprises a limiting structure, the limiting structure can limit the first winding wheel and the second winding wheel from rotating in a second direction opposite to the first direction around the axis of the mounting cylinder; the limiting structure can also allow the first winding wheel and the second winding wheel to rotate in the second direction around the axis of the mounting cylinder when the external load exceeds a first preset threshold, so as to release the connecting rope.

[0013] Further, the limiting structure comprises a plurality of inclined teeth, a plurality of abutting blocks and a first elastic member, the plurality of inclined teeth are uniformly distributed in the circumferential direction of the mounting cylinder and are fixedly connected to the inner wall of the mounting cylinder; the plurality of abutting blocks are uniformly distributed in the circumferential direction of the mounting ring and can move in the radial direction of the mounting ring; the two ends of the first elastic member are respectively connected to the abutting blocks and the mounting ring, and the elastic force of the first elastic member always makes the abutting blocks abut against the inclined teeth.

[0014] Among them, the inclined teeth have a first inclined surface and a second inclined surface, the inclination angle of the first inclined surface can allow the mounting ring to rotate in the first direction in the mounting cylinder; the inclination angle of the second inclined surface can limit the mounting ring from rotating in the second direction in the mounting cylinder, and can allow the mounting ring to rotate in the second direction in the mounting cylinder when the external load exceeds the first preset threshold.

[0015] Further, the driving assembly further comprises two threading plates, the two threading plates are circumferentially and slidingly connected to the inner wall of the mounting cylinder, the connecting rope passes through the two threading plates in sequence, and the threading plates can slide in the mounting cylinder under the action of external load.

[0016] Further, the driving assembly further comprises locking structures, the locking structures are used to limit the relative rotation between the mounting ring and the mounting cylinder when the external load exceeds a second preset threshold.

[0017] Further, the locking structures are provided as two, and each locking structure corresponds to one threading plate.

[0018] Each locking structure comprises two locking blocks and two second elastic members, the inner wall of the mounting cylinder is fixedly connected with a vertical plate, the locking blocks penetrate through the vertical plate and are slidingly connected to the vertical plate, the two ends of the second elastic members are connected to the locking blocks and the vertical plate, the elastic force of the second elastic members always makes the locking blocks close to the threading plates, and the outer wall of the mounting ring is uniformly provided with a plurality of insertion grooves in the circumferential direction.

[0019] Among them, the two ends of the threading plate are provided with driving surfaces, when the threading plate moves under the action of external load, the threading plate can push the locking blocks into the insertion grooves through the driving surfaces to limit the rotation of the mounting ring.

[0020] The application also provides a water quality detection method for a river channel, which is applied to the water quality detection device for the river channel and comprises the following steps: S100, anchoring the floating ball and the monitoring assembly to the preset fixed point through the connecting rope, and making the monitoring assembly located at the preset point on the water surface under the floating action of the floating ball; S200, starting the driving assembly to drive the monitoring assembly to move along the connecting rope, so that the monitoring assembly is replaced to a new detection position; S300, performing water quality parameter detection through the monitoring assembly at the new detection position.

[0021] The application has the following beneficial effects: The application provides a water quality detection device and detection method for a river channel, wherein the water quality detection device for the river channel comprises a driving assembly, and the driving assembly can replace the position of the monitoring assembly on the connecting rope. When the water quality of the river channel is detected, the position of the monitoring assembly can be replaced through the driving assembly, so that the dynamic monitoring of the water quality of different regions of the river can be realized, and the water quality detection data is more comprehensive. Meanwhile, the comprehensive water quality data can provide more accurate basis for water pollution tracing and treatment, and the pertinence and effectiveness of water pollution prevention and treatment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structural schematic diagram of a river water quality detection device provided by an embodiment of the present application; Figure 2 A Figure 1 front view of the structure shown; Figure 3 A Figure 1 side view of the structure shown; Figure 4 A Figure 2 cross-sectional view in the A-A direction; Figure 5 A Figure 2 cross-sectional view in the B-B direction; Figure 6 A Figure 3 cross-sectional view in the C-C direction; Figure 7 A Figure 4 close-up view of the D portion; Figure 8 A Figure 5 close-up view of the E portion; Figure 9 A Figure 6 close-up view of the F portion; Figure 10 A Figure 6 close-up view of the G portion; Figure 11 An exploded view of a driving assembly in a river water quality detection device provided by an embodiment of the present application.

[0023] Wherein: 110, monitoring shell; 120, water quality sensor; 210, floating ball; 310, connecting rope; 311, fixed anchor; 410, solar panel; 510, mounting cylinder; 511, helical tooth; 512, vertical plate; 513, locking block; 514, second compression spring; 520, mounting ring; 530, first winding wheel; 531, first rotating shaft; 532, first belt pulley; 540, second winding wheel; 541, second rotating shaft; 542, first gear; 543, second gear; 550, buffer ring; 551, third torsional spring; 552, abutting block; 553, first compression spring; 554, insertion slot; 560, threading plate; 570, driving motor; 580, synchronization shaft; 581, transmission gear; 582, second belt pulley; 583, transmission belt; 590, tooth ring. DETAILED DESCRIPTION

[0024] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0025] The numbers of components used herein, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "coupling" of the present application include direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0027] Reference will now be made to the following Figures 1 to 11 The water quality detection device for river channel provided by the embodiment of the present application is described.

[0028] The water quality detection device for river channel provided by the embodiment of the present application includes a monitoring assembly, a floating ball 210, a connecting rope 310, a power supply assembly and a driving assembly.

[0029] The monitoring assembly includes a monitoring shell 110 and a water quality sensor 120. The monitoring shell 110 is a hollow grid cylindrical structure, and the side wall and the bottom thereof are provided with uniformly distributed water permeable holes, so as to ensure that the water body can freely pass through the monitoring shell 110. The water quality sensor 120 is fixedly installed at the center position inside the monitoring shell 110, and the sensing probe of the water quality sensor 120 is completely exposed, so that the sensing probe of the water quality sensor 120 can be directly contacted when the water body passes through the monitoring shell 110. The water quality sensor 120 can collect the key pollution index data of the water body in real time.

[0030] The floating ball 210 is a hollow spherical sealing structure coaxially fixedly connected to the monitoring shell 110, used to stably float other components on the water surface through its own buoyancy, so as to guarantee the buoyancy balance of the detection device in the monitoring process.

[0031] One end of the connecting rope 310 is fixedly provided with a fixed anchor 311 embedded in a preset fixed point at the bottom of the river channel, and the preset fixed point is a fixed base provided in advance at the bottom of the river channel. The connecting rope 310 is used to provide basic positioning for the entire detection device through the connection of the fixed anchor 311 and the preset fixed point.

[0032] The power supply assembly includes a plurality of solar panels 410 fixedly arranged on the upper wall surface of the floating ball 210, and the light receiving surfaces of the plurality of solar panels 410 always face obliquely upward, used to continuously supply power for the water quality sensor 120 and the driving assembly, and ensure long-term stable operation of the detection device.

[0033] The driving assembly includes a mounting cylinder 510, a mounting ring 520, a first winding wheel 530, a second winding wheel 540, and a power source. The mounting cylinder 510 is a cylindrical hollow structure, one end of which is coaxially fixedly connected to the lower wall surface of the floating ball 210, and the other end is coaxially fixedly connected to the upper wall surface of the monitoring shell 110. Two through holes are formed in the side wall of the mounting cylinder 510, and the hole diameter of the through holes is slightly larger than the diameter of the connecting rope 310, so that the connecting rope 310 can smoothly penetrate the mounting cylinder 510.

[0034] The mounting ring 520 is an annular plate structure located at the inner center position of the mounting cylinder 510 and coaxially connected with the mounting cylinder 510.

[0035] The first winding wheel 530 coaxially extends a first rotating shaft 531, and the first winding wheel 530 is rotationally connected to the mounting ring 520 through the first rotating shaft 531. The second winding wheel 540 coaxially extends a second rotating shaft 541, and the second winding wheel 540 is rotationally connected to the mounting ring 520 through the second rotating shaft 541. The first winding wheel 530 and the second winding wheel 540 are symmetrically distributed with the center of the mounting ring 520 as the symmetric point, and the connecting rope 310 is wound on the first winding wheel 530 and the second winding wheel 540 in opposite directions.

[0036] The power source includes a driving motor 570 and a transmission structure. The driving motor 570 is fixedly installed on the outer wall surface of the mounting cylinder 510, and the output shaft of the driving motor 570 is connected with the second rotating shaft 541. The driving motor 570 is used to provide power for the synchronous reverse rotation of the first winding wheel 530 and the second winding wheel 540.

[0037] The transmission structure comprises a synchronous shaft 580. One end of the second rotating shaft 541 is coaxially fixedly provided with a first gear 542, the synchronous shaft 580 is rotationally connected with the mounting ring 520, and the axis of the synchronous shaft 580 is parallel to the axes of the first rotating shaft 531 and the second rotating shaft 541; the synchronous shaft 580 is coaxially fixedly provided with a transmission gear 581 and a second belt pulley 582, the transmission gear 581 is engaged with the first gear 542; one end of the first rotating shaft 531 is coaxially fixedly provided with a first belt pulley 532, the first belt pulley 532 is identical in size with the second belt pulley 582; and a transmission belt 583 is wound around the first belt pulley 532 and the second belt pulley 582.

[0038] When the driving motor 570 drives the second rotating shaft 541 to rotate clockwise, the second rotating shaft 541 drives the transmission gear 581 to rotate counterclockwise through the first gear 542, the transmission gear 581 drives the synchronous shaft 580 and the second belt pulley 582 to synchronously rotate counterclockwise, the second belt pulley 582 drives the first belt pulley 532 to rotate counterclockwise through the transmission belt 583, and the first rotating shaft 531 and the first winding wheel 530 rotate counterclockwise; conversely, when the driving motor 570 drives the second rotating shaft 541 to rotate counterclockwise, the second rotating shaft 541 drives the transmission gear 581 to rotate clockwise through the first gear 542, the transmission gear 581 drives the synchronous shaft 580 and the second belt pulley 582 to synchronously rotate clockwise, the second belt pulley 582 drives the first belt pulley 532 to rotate clockwise through the transmission belt 583, and the first rotating shaft 531 and the first winding wheel 530 rotate clockwise. Thus, the first winding wheel 530 and the second winding wheel 540 are synchronously and reversely rotated, and the mounting cylinder 510, the floating ball 210 and the monitoring shell 110 are driven to move directionally on the connecting rope 310 through the winding and unwinding of the connecting rope 310.

[0039] When the detection device is put into use, the fixed anchor 311 is first embedded into a preset fixed point at the bottom of the river channel, so as to ensure that the connecting rope 310 is in a straightened state and to provide a stable positioning basis. Subsequently, the floating ball 210 makes the entire detection device float on the water surface through its own buoyancy, the solar panel 410 receives light and converts solar energy into electric energy to power the water quality sensor 120 and the driving motor 570. The water quality sensor 120 is in contact with the water body through the water-permeable hole of the monitoring shell 110, and real-time water quality data is collected and stored and transmitted.

[0040] When it is necessary to monitor the water quality of different areas of the river, the driving motor 570 is started and drives the first winding wheel 530 and the second winding wheel 540 to rotate in reverse synchronously, through the orderly winding and unwinding of the connecting rope 310, the installation cylinder 510, the monitoring shell 110 and the floating ball 210 are driven to move along the extension direction of the connecting rope 310, realizing dynamic monitoring from the river bank to the river center and different positions. When moving to the target monitoring position, the driving motor 570 stops running, the first winding wheel 530 and the second winding wheel 540 stop rotating, and the water quality sensor 120 remains at the position for fixed-point monitoring. During the movement, the monitoring shell 110 always maintains sufficient contact with the water body, and the water quality sensor 120 can continuously collect data, ensuring the comprehensiveness and continuity of the monitoring data.

[0041] Therefore, by winding the connecting rope 310 on the first winding wheel 530 and the second winding wheel 540 in opposite directions, when the driving motor 570 drives the first winding wheel 530 and the second winding wheel 540 to rotate in reverse synchronously, the installation cylinder 510, the floating ball 210 and the monitoring shell 110 can be stably moved along the extension direction of the connecting rope 310, so that the water quality sensor 120 can move back and forth along the preset route, realizing dynamic coverage monitoring of the water quality of different areas of the river, and improving the comprehensiveness and representativeness of the water quality monitoring data.

[0042] Further, when the water surface drops, the floating support position of the water body on the floating ball 210 decreases, and the connecting rope 310 relaxes, which may cause the connecting rope 310 to fail to provide stable traction force for the installation cylinder 510. Based on this, the first winding wheel 530 and the second winding wheel 540 are arranged along the axial direction of the installation cylinder 510, so that the driving motor 570 can also drive the first winding wheel 530 and the second winding wheel 540 to rotate synchronously around the axis of the installation cylinder 510 in the first direction, so as to tighten the connecting rope 310.

[0043] Specifically, for the convenience of description, in this embodiment and the following embodiments, the connecting rope 310 is wound on the first winding wheel 530 in the clockwise direction and wound on the second winding wheel 540 in the counterclockwise direction. The rotation of an object in the clockwise direction is referred to as the first direction, and the rotation of an object in the counterclockwise direction is referred to as the second direction.

[0044] The mounting ring 520 is coaxially rotationally connected to the inner wall of the installation cylinder 510, the first winding wheel 530 is rotationally connected below the mounting ring 520, and the second winding wheel 540 is rotationally connected above the mounting ring 520, so that the first winding wheel 530 and the second winding wheel 540 are arranged at intervals along the axial direction of the installation cylinder 510, so as to ensure that the first winding wheel 530 and the second winding wheel 540 do not interfere with each other when rotating around the axis of the installation cylinder 510, and provide space for the orderly winding and unwinding of the connecting rope 310.

[0045] The power source further comprises a gear ring 590, which is an inner tooth ring structure located on the inner wall surface of the upper portion of the mounting cylinder 510 and coaxially connected with the mounting cylinder 510 for rotation, and the gear ring 590 can freely rotate around the axis of the mounting cylinder 510. The output end of the driving motor 570 is coaxially fixedly connected with the gear ring 590, so that the power of the driving motor 570 is directly transmitted to the gear ring 590 to drive it to rotate around its own axis. The second shaft 541 is coaxially fixedly provided with a second gear 543 at the end away from the mounting ring 520, and the second gear 543 is engaged with the gear ring 590.

[0046] The driving assembly further comprises a limiting structure, which comprises a plurality of abutting blocks 552, a plurality of inclined teeth 511 and a plurality of first elastic members. The plurality of abutting blocks 552 are uniformly distributed along the circumference of the mounting ring 520 and are slidingly connected to the mounting ring 520 along the radial direction of the mounting ring 520. The plurality of inclined teeth 511 are uniformly distributed along the circumference of the mounting cylinder 510 and are fixedly connected to the inner wall surface of the mounting cylinder 510, and the axial positions of the plurality of inclined teeth 511 correspond to the axial positions of the plurality of abutting blocks 552 and are located on the same horizontal plane. Each inclined tooth 511 has a first inclined surface and a second inclined surface, the inclination angle of the first inclined surface is smaller, which allows the mounting ring 520 to rotate in the first direction within the mounting cylinder 510 to tighten the connecting rope 310, and the inclination angle of the second inclined surface is larger, which normally restricts the mounting ring 520 from rotating in the second direction, but when the external load exceeds the first preset threshold, the second inclined surface allows the mounting ring 520 to rotate in the second direction to release the connecting rope 310. The first preset threshold can be set according to actual working condition parameters such as the water flow impact force of the monitored water area, the rated bearing strength of the connecting rope 310 and the overall weight of the device. The first elastic member is a first compression spring 553, the two ends of which are fixedly connected with the abutting block 552 and the mounting ring 520 respectively, and the elastic force of the first compression spring 553 always makes the abutting block 552 abut against the inclined tooth 511.

[0047] When the water level drops, the connecting rope 310 loosens due to the decrease in water buoyancy, at which time the driving motor 570 drives the gear ring 590 to rotate in the first direction. At this time, the second gear 543 can move synchronously with the gear ring 590 due to the small tension of the connecting rope 310. The gear ring 590 drives the second gear 543 to rotate in the first direction around the axis of the mounting cylinder 510, thereby driving the second shaft 541, the second winding reel 540 and the first winding reel 530 to synchronously rotate in the first direction around the axis of the mounting cylinder 510. In this process, the connecting rope 310 is simultaneously wound on the first winding reel 530 and the second winding reel 540 in the opposite direction, thereby realizing the tightening of the external connecting rope 310. At the same time, the mounting ring 520 rotates synchronously with the first winding reel 530 and the second winding reel 540, and the abutting block 552 slides along the first inclined surface of the inclined tooth 511 under the elastic force of the first compression spring 553. Since the inclination angle of the first inclined surface is small, the sliding process is not hindered, ensuring the continuous tightening action.

[0048] When the connecting rope 310 is tightened to the preset tension, the restraint force of the connecting rope 310 on the first winding wheel 530 and the second winding wheel 540 increases, so that the first winding wheel 530 and the second winding wheel 540 cannot continue to rotate around the axis of the mounting cylinder 510. At this time, the driving motor 570 continues to drive the gear ring 590 to rotate in the first direction, the gear ring 590 rotates around its own axis in the first direction relative to the mounting cylinder 510, drives the second rotating shaft 541 and the second winding wheel 540 to rotate around its own axis through the second gear 543, and then drives the first winding wheel 530 to rotate in the reverse direction synchronously, and finally drives the mounting cylinder 510 and the monitoring shell 110 to move forward on the connecting rope 310 through the winding and unwinding of the connecting rope 310.

[0049] If the driving motor 570 drives the gear ring 590 to rotate in the second direction, at this time, the abutting block 552 abuts against the second inclined surface of the bevel gear 511 under the elastic force of the first compression spring 553. Since the second inclined surface has a large inclination angle, the abutting block 552 cannot slide along the second inclined surface, thereby limiting the rotation of the mounting ring 520 and the first winding wheel 530 and the second winding wheel 540 around the axis of the mounting cylinder 510. At this time, the first winding wheel 530 and the second winding wheel 540 can only rotate around their own axes, so that the mounting cylinder 510 and the monitoring shell 110 can be driven to move reversely on the connecting rope 310 through the winding and unwinding of the connecting rope 310.

[0050] When the water level rises to increase the buoyant force acting on the floating ball 210, or other external loads make the connecting rope 310 tight, the pulling force gradually increases. When the pulling force exceeds the first preset threshold, the reverse force of the connecting rope 310 on the first winding wheel 530 and the second winding wheel 540 forces the mounting ring 520 to have a tendency to rotate in the second direction. At this time, the abutting block 552 is subjected to the reverse thrust of the second inclined surface of the bevel gear 511, so that the abutting block 552 overcomes the elastic force of the first compression spring 553 and shrinks radially along the mounting ring 520, thereby passing over the second inclined surface and allowing the mounting ring 520 to drive the first winding wheel 530 and the second winding wheel 540 to rotate in the second direction, thereby releasing part of the connecting rope 310 and avoiding the breakage of the connecting rope 310 due to over-tightening.

[0051] Therefore, by arranging the first winding wheel 530 and the second winding wheel 540 to be axially spaced apart along the mounting cylinder 510, the connecting rope 310 can be tightened through the rotation of the first winding wheel 530 and the second winding wheel 540 around the axis of the mounting cylinder 510 in the first direction when the water level drops, and the first winding wheel 530 and the second winding wheel 540 are allowed to rotate around the axis of the mounting cylinder 510 in the second direction when the external load exceeds the first preset threshold, thereby avoiding the influence of the over-looseness of the connecting rope 310 on the monitoring range or the damage of the equipment due to over-tightening.

[0052] Further, the outer coaxial sleeve of the mounting ring 520 is provided with a buffer ring 550, the buffer ring 550 is annular structure, and there is an annular gap between the buffer ring 550 and the mounting ring 520. A third elastic member is arranged between the mounting ring 520 and the buffer ring 550, and the third elastic member is a third torsion spring 551. One end of the third torsion spring 551 is fixedly connected with the outer wall surface of the mounting ring 520, and the other end is fixedly connected with the inner wall surface of the buffer ring 550. The elastic force of the third torsion spring 551 always keeps the mounting ring 520 and the buffer ring 550 in a relatively static coaxial state.

[0053] The abutting block 552 is slidingly connected to the outer wall surface of the buffer ring 550, and the sliding direction is along the radial direction of the buffer ring 550. The first compression spring 553 is fixedly connected with the abutting block 552 and the outer wall surface of the buffer ring 550 at both ends, and its elastic force always makes the abutting block 552 abut against the helical gear 511.

[0054] When the water surface fluctuates, the mounting cylinder 510 will produce periodic oscillation, and the inner wall of the mounting cylinder 510 transmits the impact force to the buffer ring 550 through the abutting block 552. Since the buffer ring 550 and the mounting ring 520 are connected by the third torsion spring 551, the impact force will cause the third torsion spring 551 to elastically twist and deform, converting the instantaneous impact force into the elastic potential energy of the third torsion spring 551, thereby absorbing the fluctuation energy and preventing the mounting cylinder 510, the abutting block 552 and the mounting ring 520 from colliding rigidly due to the fluctuation of the water surface, thereby avoiding wear or fracture caused by frequent impact.

[0055] It can be understood that the material of the outer wall of the buffer ring 550 can be a rubber material with elasticity, so that the outer wall of the buffer ring 550 can directly contact the inner wall of the mounting cylinder 510. When the water surface fluctuates, the mounting cylinder 510 and the buffer ring 550 will produce relative displacement, and the elastic material of the outer wall of the buffer ring 550 will deform, thereby absorbing the impact energy through the elastic restoring force, and further enhancing the buffering effect.

[0056] In one embodiment, the driving assembly further comprises a threading plate 560 and a buffer elastic member.

[0057] Specifically, the inner side wall of the mounting cylinder 510 is provided with two limit grooves opening towards the self-axis. The limit grooves are arc-shaped grooves opened along the circumference of the inner wall of the mounting cylinder 510, and the two limit grooves are distributed along the axial direction of the mounting cylinder 510. The threading plate 560 is provided as two, and the threading plate 560 is an arc-shaped block structure, the curvature of which matches the curvature of the inner wall of the mounting cylinder 510. Each threading plate 560 can be embedded in one limit groove, and the outer wall of the threading plate 560 is attached to the groove wall of the limit groove, ensuring that the threading plate 560 can slide along the circumference of the mounting cylinder 510. The center of the threading plate 560 is provided with a threading hole, and the diameter of the threading hole is equal to the diameter of the connecting rope 310. The connecting rope 310 passes through the threading holes of the two threading plates 560 in turn, and the movement of the connecting rope 310 can drive the threading plate 560 to slide synchronously. The buffer elastic member is provided as two third compression springs (not shown in the figure), one end of each third compression spring is fixedly connected with one end of the threading plate 560, and the other end is fixedly connected with the groove wall of the limit groove. The elastic force of the two third compression springs is completely equal, and the threading plate 560 is always stably positioned at the center of the limit groove.

[0058] In use, when the water flow or wind wave and other external loads act on the detection device, the detection device will have a tilting tendency, the tension direction of the connecting rope 310 deviates from the axis of the mounting cylinder 510, the two threading plates 560 overcome the elastic force of the third compression spring and slide along the limit groove, causing the connecting rope 310 segment passing through the two threading plates 560 no longer passes through the center of the mounting cylinder 510. At this time, the force position of the connecting rope 310 changes, the tension of the connecting rope 310 generates a counter-torque opposite to the tilting tendency of the detection device, inhibits the tilting tendency of the detection device, prevents the detection device from falling, and ensures that the floating ball 210 always maintains a horizontal floating state, so that the water quality sensor 120 in the monitoring shell 110 always stably contacts with the water body, and the accuracy and continuity of the water quality detection data are ensured. When the external load decreases or disappears, the elastic force of the third compression spring drives the threading plate 560 to automatically reset to the center position of the limit groove, ensuring the positional stability of the threading plate 560 under no load.

[0059] Further, the threading hole of the threading plate 560 is fixedly provided with a tapered block, and the small end diameter of the tapered block is equal to the diameter of the threading hole. During the winding process of the connecting rope 310, the tapered block is used to remove impurities attached to the surface of the connecting rope 310, so that the impurities cannot enter the inside of the mounting cylinder 510 through the threading hole.

[0060] Further, the driving assembly further comprises a locking structure.

[0061] Specifically, the locking structure is provided as two, and each locking structure is matched with one threading plate 560.

[0062] The inner side wall of the mounting cylinder 510 is provided with a plurality of vertical plates 512 parallel to the axis of the mounting cylinder 510, and the vertical plates 512 are fixedly connected with the inner side wall of the mounting cylinder 510.

[0063] Each locking structure includes two locking blocks 513 and two second elastic members. The two ends of the threading plate 560 towards the end face of the buffer ring 550 are provided with driving surfaces with a preset angle, and the locking blocks 513 penetrate through the vertical plates 512 and are in sliding connection with the vertical plates 512. The second elastic members are provided as second compression springs 514, and the two ends of the second compression springs 514 are fixedly connected with the locking blocks 513 and the vertical plates 512 respectively, and the elastic force of the second compression springs 514 always makes the locking blocks 513 have a tendency to approach the threading plate 560. The outer wall of the buffer ring 550 is uniformly provided with a plurality of insertion grooves 554 in the circumferential direction, and the insertion grooves 554 are trapezoidal grooves with the slot opening towards the mounting cylinder 510, and one end of the locking block 513 can be embedded in the insertion groove 554.

[0064] When the external load such as water flow impact and wind wave exceeds the second preset threshold, the tilting tendency of the device increases, driving the threading plate 560 to slide along the mounting cylinder 510 with a large amplitude. When the threading plate 560 slides, the driving surfaces at both ends of the threading plate 560 will push the locking blocks 513 to move towards the buffer ring 550 against the elastic force of the second compression springs 514. When the threading plate 560 slides to the limit position, one end of the locking block 513 is completely embedded in the insertion groove 554 of the buffer ring 550, limiting the rotation of the buffer ring 550, and indirectly realizing the locking of the relative rotation of the mounting ring 520 and the mounting cylinder 510.

[0065] When the external load decreases to below the second preset threshold, the tilting tendency of the detection device decreases, and the circumferential force acting on the threading plate 560 disappears. The second compression spring 514 pushes the locking block 513 to slide on the vertical plate 512 towards the threading plate 560, and the locking block 513 completely leaves the insertion groove 554 of the buffer ring 550, releasing the rotation restriction of the buffer ring 550. The buffer ring 550 and the mounting ring 520 restore the relative rotation ability, and the detection device restores the normal use state.

[0066] Among them, the second preset threshold and the inclination angle of the driving surface can be set according to the actual working condition parameters such as the maximum wind wave impact force of the monitored water area and the overall anti-toppling critical load of the detection device.

[0067] Therefore, when the external load exceeds the second preset threshold, the threading plate 560 can push the locking block 513 to insert into the insertion groove 554, forcibly restrict the rotation of the buffer ring 550 and the mounting ring 520, indirectly realize the locking of the relative rotation of the mounting ring 520 and the mounting cylinder 510, further improve the stability of the detection device, and ensure that the water quality sensor 120 stably contacts the water body and ensures the accuracy of the detection data.

[0068] Further, the slot wall of the slot 554 is provided with a third inclined surface with a preset inclination angle. When the water level rises, the buoyancy acting on the detection device increases, causing the tension of the connecting rope 310 to increase suddenly, resulting in a relative force between the locking block 513 and the slot wall of the slot 554. When the force can overcome the elastic force of the second compression spring 514, the locking block 513 will slide along the third inclined surface and be separated from the slot 554, automatically releasing the rotation restriction of the buffer ring 550, ensuring that the buffer ring 550 and the mounting ring 520 can rotate relatively synchronously with the release of the connecting rope 310 in the extreme case of sudden increase of buoyancy, avoiding structural damage caused by forced locking, and ensuring the adaptability of the detection device to the rapid change of water level.

[0069] The embodiment of the present application also provides a water quality detection method for a river channel, which is applied to the water quality detection device for the river channel in any one of the above embodiments, and comprises the following steps. S100, initial setting and starting.

[0070] S110, embedding the fixed anchor 311 into a preset fixed point at the bottom of the river channel, so as to ensure that the connecting rope 310 is in a straightened state and to provide stable positioning for the detection device.

[0071] S120, floating the floating ball 210 on the water surface by the buoyancy of the floating ball 210, so as to ensure that the monitoring shell 110 and the water quality sensor 120 are immersed in water.

[0072] S130, starting the solar panel 410 to supply power, starting the water quality sensor 120 and the driving motor 570, and performing self-checking and entering a standby state.

[0073] S140, the threading plate 560 is stably positioned at the center of the limiting slot under the action of the third compression spring, the connecting rope 310 is centrally threaded through the threading hole, and the detection device is in an initial balanced state.

[0074] S200, presetting a monitoring point and parameters.

[0075] S210, distributing the preset target monitoring points along the connecting rope 310 and setting a moving path.

[0076] S220, presetting the moving parameters of the mounting cylinder 510, including a moving speed and a direction.

[0077] S230, presetting the sampling frequency and data transmission interval of the water quality sensor 120.

[0078] S300, starting the driving assembly to perform moving monitoring.

[0079] S310, starting the driving motor 570 to drive the first winding reel 530 and the second winding reel 540 to rotate at the same speed in opposite directions.

[0080] S320, by the winding and unwinding of the connecting rope 310, the installation cylinder 510, the floating ball 210 and the monitoring shell 110 are driven to move along the extension direction of the connecting rope 310.

[0081] S330, when moving to the target monitoring point, stop driving the motor 570, and the water quality sensor 120 performs fixed-point monitoring at the position and collects water quality data in real time.

[0082] S340, the monitoring data is sent to the cloud platform through the wireless transmission module for remote viewing and analysis.

[0083] S400, respond to water level changes.

[0084] S410, real-time monitoring of water level changes; when the water level drops, the connecting rope 310 becomes loose, and the driving motor 570 drives the gear ring 590 to rotate in the first direction.

[0085] S420, the gear ring 590 drives the second rotating shaft 541 through the second gear 543 to drive the first winding wheel 530 and the second winding wheel 540 to rotate along the first direction around the axis of the installation cylinder 510, and synchronously tighten the connecting rope 310.

[0086] S430, when the connecting rope 310 is tightened to a preset tension, the driving motor 570 stops the tightening operation, or returns to S300 to switch to the moving monitoring mode.

[0087] S440, when the external load exceeds the first preset threshold, the abutting block 552 and the bevel gear 511 allow the installation ring 520 to rotate in the second direction, releasing part of the connecting rope 310 to prevent breakage.

[0088] S500, keep the detection device balanced and respond to external load overload.

[0089] S510, when the external load causes the detection device to have a tilting trend, the connecting rope 310 tension direction deviates from the axis of the installation cylinder 510, pushing the two threading plates 560 to overcome the elastic force of the respective third compression spring, sliding along the limiting groove in the opposite direction of the tilt, and the sliding of the threading plate 560 causes the connecting rope 310 segment to deviate, generating a reverse torque to inhibit the detection device from tilting, ensuring the floating ball 210 to float horizontally and the water quality sensor 120 to stably contact.

[0090] S520, when the external load exceeds the second preset threshold, the threading plate 560 slides in the installation cylinder 510, pushing the locking block 513 to insert into the insertion slot 554 of the buffer ring 550 through the driving surface, locking the installation ring 520 to prevent rotation, and improving the stability of the device.

[0091] S530, after locking, the installation cylinder 510 suspends movement, and the water quality sensor 120 continues to monitor the water quality until the external load decreases to a safe range and is automatically unlocked.

[0092] S540, when the water surface rises to cause the buoyancy to increase suddenly, the tension of the connecting rope 310 makes the force between the locking block 513 and the third inclined surface of the slot 554 overcome the elastic force of the second compression spring 514, the locking block 513 slides along the third inclined surface and is separated from the slot 554, the rotation restriction of the buffer ring 550 is automatically released, and the structure damage is avoided.

[0093] S600, continuously monitoring and cyclic operation.

[0094] S610, the system moves between different monitoring points according to the pre-designed plan, covering different areas of the river.

[0095] S620, regularly check the equipment state, and carry out automatic calibration or maintenance prompt.

[0096] S630, if it is necessary to replace the monitoring point or end the task, the driving motor 570 moves the detection device to the initial position, and executes the shutdown program.

[0097] S640, when the detection device is recovered, the driving motor 570 and the water quality sensor 120 are stopped first, then the fixed anchor 311 is disassembled, and the connecting rope 310 and the floating ball 210 are recovered.

[0098] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0099] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A water quality testing device for rivers and waterways, characterized in that, The utility model relates to a water quality monitoring device, comprising: a monitoring assembly for detecting water quality parameters at preset points; a float ball capable of floating the monitoring assembly on the water surface; a connecting rope connecting a preset fixed point and the float ball; a driving assembly for changing the position of the monitoring assembly on the connecting rope.

2. The river water quality detection device according to claim 1, wherein The driving assembly comprises a mounting cylinder, a first winding wheel, a second winding wheel and a power source, the mounting cylinder is coaxially fixedly connected to the float ball; the first winding wheel and the second winding wheel are both rotationally connected to the inner wall of the mounting cylinder, the connecting rope penetrates through the mounting cylinder, and the connecting rope is wound on the first winding wheel and the second winding wheel in opposite directions; the power source can drive the first winding wheel and the second winding wheel to rotate at the same speed in opposite directions, so that the mounting cylinder moves along the connecting rope.

3. The river water quality detection device according to claim 2, characterized in that, The first winding wheel and the second winding wheel are spaced apart along the axial direction of the mounting cylinder; the power source can also drive the first winding wheel and the second winding wheel to rotate synchronously in a first direction about the axis of the mounting cylinder, so as to tighten the connecting rope.

4. The river water quality detection device according to claim 3, characterized in that, The driving assembly further comprises a mounting ring rotationally connected to the inner wall of the mounting cylinder; the first winding wheel and the second winding wheel are both rotationally connected to the mounting ring, and the first winding wheel is located below the mounting ring, and the second winding wheel is located above the mounting ring.

5. The river water quality detection device according to claim 4, wherein The driving assembly further comprises a limiting structure capable of limiting the first winding wheel and the second winding wheel from rotating in a second direction opposite to the first direction about the axis of the mounting cylinder; the limiting structure can also allow the first winding wheel and the second winding wheel to rotate in the second direction about the axis of the mounting cylinder when the external load exceeds a first preset threshold, so as to release the connecting rope.

6. The river water quality detection device according to claim 5, characterized in that, The limiting structure comprises a plurality of inclined teeth, a plurality of abutting blocks and a first elastic member, the plurality of inclined teeth are uniformly distributed along the circumferential direction of the mounting cylinder and fixedly connected to the inner wall of the mounting cylinder; the plurality of abutting blocks are uniformly distributed along the circumferential direction of the mounting ring and capable of moving radially along the mounting ring; the two ends of the first elastic member are respectively connected to the abutting blocks and the mounting ring, and the elastic force of the first elastic member always causes the abutting blocks to abut against the inclined teeth; wherein, the inclined teeth have a first inclined surface and a second inclined surface, the inclination angle of the first inclined surface can allow the mounting ring to rotate in the first direction within the mounting cylinder; the inclination angle of the second inclined surface can limit the mounting ring from rotating in the second direction within the mounting cylinder, and can allow the mounting ring to rotate in the second direction within the mounting cylinder when the external load exceeds the first preset threshold.

7. The river water quality detection device according to claim 4, characterized in that, The driving assembly further comprises two threading plates, the two threading plates are slidably connected to the inner wall of the mounting cylinder in the circumferential direction, the connecting rope penetrates through the two threading plates in sequence, and the threading plates can slide within the mounting cylinder under the action of the external load.

8. The river water quality detection device according to claim 7, wherein The driving assembly further comprises locking structures for limiting the relative rotation between the mounting ring and the mounting cylinder when the external load exceeds a second preset threshold.

9. The river water quality detection device according to claim 8, wherein The locking structures are arranged in two, each corresponding to one of the threading plates; Each locking structure comprises two locking blocks and two second elastic members, the inner wall of the mounting cylinder is fixedly connected with a vertical plate, the locking blocks penetrate through the vertical plate and are slidingly connected to the vertical plate, the two ends of the second elastic members are connected to the locking blocks and the vertical plate, the elastic force of the second elastic members always makes the locking blocks close to the threading plates, and the outer wall of the mounting ring is uniformly provided with a plurality of insertion slots in the circumferential direction. The two ends of the threading plate are provided with driving surfaces, when the threading plate moves under the action of the external load, the threading plate can push the locking blocks into the insertion slots through the driving surfaces to limit the rotation of the mounting ring.

10. A water quality detection method of a river channel, applied to the water quality detection device of any one of claims 1-9, characterized in that, The method comprises the following steps: S100, anchoring the floating ball and the monitoring assembly to the preset fixed point through the connecting rope, and making the monitoring assembly located at the preset point on the water surface under the floating action of the floating ball; S200, starting the driving assembly to drive the monitoring assembly to move along the connecting rope, so as to replace the monitoring assembly to a new detection position; S300, performing water quality parameter detection by the monitoring assembly at the new detection position.

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