CN116400040A

CN116400040A - Real-time water quality detection device based on unmanned aerial vehicle

Info

Publication number: CN116400040A
Application number: CN202310456857.3A
Authority: CN
Inventors: 张恒南; 张静
Original assignee: Weihai Differential Instrument Technology Co ltd
Current assignee: Weihai Differential Instrument Technology Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-07-07

Abstract

The application provides a real-time water quality detection device based on an unmanned aerial vehicle, which solves the technical problems of large volume, large weight and low detection accuracy of the existing water quality detection device based on the unmanned aerial vehicle; comprises a pipe collecting device for collecting and releasing the water collecting pipe; further comprises: the bottom of the buffer is provided with a first water inlet and a first water outlet which are communicated with the water intake pipe, and the top of the buffer is provided with a waste water port; the inner cavity is provided with a plurality of buffer cavities which are nested inside and outside and are provided with an opening at the top, the first water inlet and the wastewater outlet correspond to the innermost buffer cavity, and the first water outlet corresponds to the outermost buffer cavity; the circulating detector is internally provided with a circulating cavity, a second water inlet communicated with the first water outlet is arranged in the middle of the bottom, and a second water outlet is arranged at the edge of the top; a detection sensor is arranged in the circulation cavity. The application is widely applied to the technical field of unmanned aerial vehicle water quality detection.

Description

Real-time water quality detection device based on unmanned aerial vehicle

Technical Field

The application relates to a water quality detection device, and more specifically relates to a real-time water quality detection device based on unmanned aerial vehicle.

Background

Along with the rapid development of economy and the acceleration of urban process, the water pollution problem is more and more serious under the influence of human activities, and serious threat is caused to human health, so that the water quality monitoring and detection are important means for preventing and controlling the water pollution. At present, the water quality detection mainly adopts the modes of laboratory detection, portable equipment field detection, unmanned ship detection and the like, but the detection modes are greatly influenced by the complicated condition of the terrain and the limitation of the regional range when the water sample is collected or detected on the spot, and the water quality detection of the complicated terrain and the wider area cannot be realized.

In recent years, an emerging unmanned aerial vehicle water quality detection technology is that an unmanned aerial vehicle is provided with a sampling or detection device, so that the unmanned aerial vehicle water quality detection technology can be used for sampling and detecting in a complex environment or places where unmanned ships are difficult to reach, and is attracting more attention in the field of water quality detection. When the detection is implemented, the unmanned aerial vehicle is used for carrying the detection device, and the detection device is immersed into water for direct detection in a floating platform or a hanging rope winding and unwinding mode, or a peristaltic pump is used for sucking a water sample into the detection device for static detection. Because detection device is the integrated equipment of multiple sensor, and volume, weight are great, have the focus unstable when unmanned aerial vehicle unsettled detection, easily produce the bubble, cause the detection data stability poor easily. In addition, when the water body is sucked into the detection device for static detection of the dissolved oxygen, the data accuracy is lower, and the detection result of the flowing state of the water body is closer to the actual detection result.

Disclosure of Invention

For solving the current water quality testing device based on unmanned aerial vehicle volume, weight are big and detect the low problem of accuracy, the technical scheme that this application adopted is: the real-time water quality detection device based on the unmanned aerial vehicle comprises a pipe collector for collecting and releasing a water intake pipe; further comprises:

the bottom of the buffer is provided with a first water inlet and a first water outlet which are communicated with the water intake pipe, and the top of the buffer is provided with a waste water port; the inner cavity is provided with a plurality of buffer cavities which are nested inside and outside and are provided with an opening at the top, the first water inlet and the wastewater outlet correspond to the innermost buffer cavity, and the first water outlet corresponds to the outermost buffer cavity; and

A flow detector with a flow cavity inside, a second water inlet communicated with the first water outlet is arranged in the middle of the bottom, and a second water outlet is arranged at the edge of the top; a detection sensor is arranged in the circulation cavity.

Preferably, the buffer chambers are formed by arranging the buffer cylinders from inside to outside at intervals, and an overflow space exists between the top of each buffer cylinder and the top of the buffer.

Preferably, the middle part of the bottom surface of the inner cavity of the buffer is low and the periphery is high, and the bottom of the buffer cylinder is provided with a circulation port; the circulation openings of the adjacent buffer cylinders are distributed in a staggered way.

Preferably, the detection sensor comprises one or a combination of a temperature sensor, a PH sensor, a dissolved oxygen sensor, a conductivity sensor and a turbidity sensor.

Preferably, the bottom surface of the circulation cavity is an arc surface or a spiral rising structure with low middle and high periphery.

Preferably, a water pump capable of rotating positively and negatively is further connected between the water intake pipe and the first water inlet of the buffer.

Preferably, the pipe collector comprises a rotary table and a driving motor, wherein one axial end of the rotary table is connected with the driving motor, and the other axial end of the rotary table is provided with a passage for allowing a water intake pipe to enter and exit; the turntable comprises a turntable body used for winding the water intake pipe and limiting plates arranged at two ends of the turntable body, and a pipe collecting port communicated with the passage is arranged on the turntable body.

Preferably, the axial length of the turntable body is greater than the outer diameter of the water intake pipe and less than 2 times the outer diameter of the water intake pipe.

Preferably, a guide assembly is arranged below the pipe collecting device, and comprises a fixing frame and at least two rollers, wherein the two rollers are rotatably connected with the fixing frame; the surfaces of the two rollers are provided with annular grooves matched with the water intake pipes.

Preferably, the free end of the water intake pipe is connected with a filter; a filter screen is arranged in the filter, and the upper end of the filter is of a conical structure.

The invention has the beneficial effects that: on the one hand, the buffer and the circulation detector are additionally arranged, water enters the buffer through the sampling tube, and after the water pressure is balanced through a plurality of buffer cavities of the buffer, the water gently flows into the circulation detector for detection. The edge at the top of the flow detector is provided with a second water outlet, water flows in and out, the flowing state is kept, the dynamic real-time detection of water quality is realized, and the detection accuracy is high. On the other hand, each part simple structure, the tube collector reduces the setting of tube collector, restricts the axial size of tube collector carousel main part simultaneously, has both reduced volume, weight, has avoided the intake pipe winding knot again, and influences the testing result.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention (with upper and lower shells removed);

FIG. 3 is a schematic top view of FIG. 2;

FIG. 4 is a schematic longitudinal cross-sectional view of a damper;

FIG. 5 is a schematic cross-sectional view of a bumper;

FIG. 6 is a schematic longitudinal cross-section of a flow-through detector;

FIG. 7 is a schematic top view of a hose reel;

FIG. 8 is a cross-sectional view A-A of FIG. 7;

FIG. 9 is a schematic view of a guide assembly;

FIG. 10 is a graph showing the time-dependent pH detection data of water quality with or without a buffer;

FIG. 11 is a graph showing water conductivity detection data with or without a buffer over time;

FIG. 12 is a graph showing the time-dependent change of water quality dissolved oxygen detection data with or without a buffer;

FIG. 13 is a graph showing the time course of water temperature measurement data with or without a buffer.

The symbols in the drawings illustrate:

1. a water intake pipe; 2. a pipe collector; 3. a buffer; 4. a first water inlet; 5. a first water outlet; 6. a waste water port; 7. a buffer chamber; 8. a flow-through chamber; 9. a flow-through detector; 10. a second water inlet; 11. a second water outlet; 12. a detection sensor; 13. a buffer tube; 14. a flow port; 15. a water channel; 16. a water leakage hole; 17. a water pump; 18. a mounting plate; 19. an upper case; 20. a lower case; 21. a boom; 22. a turntable; 23. a driving motor; 24. a passage; 25. a turntable body; 26. a limiting plate; 27. a pipe receiving opening; 28. an induction block; 29. a photoelectric induction switch; 30. a guide assembly; 31. a fixing frame; 32. a roller; 33. an annular groove; 34. a filter; 35. and a controller.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The real-time water quality detection device based on unmanned aerial vehicle that this application embodiment provided is explained now.

Please refer to fig. 2, 3, 4 and 6, which are schematic structural diagrams of a real-time water quality detection device based on an unmanned aerial vehicle, wherein the real-time water quality detection device based on the unmanned aerial vehicle comprises: a pipe collector 2 for collecting and discharging the water intake pipe 1; the bottom of the buffer 3 is provided with a first water inlet 4 and a first water outlet 5 which are communicated with the water intake pipe 1, and the top of the buffer is provided with a waste water port 6; the inner cavity is provided with a plurality of buffer cavities 7 which are nested inside and outside and are provided with an opening at the top, the first water inlet 4 and the waste water outlet 6 correspond to the innermost buffer cavity 7, and the first water outlet 5 corresponds to the outermost buffer cavity 7; the flow detector 9 is internally provided with a flow cavity 8, the middle of the bottom is provided with a second water inlet 10 communicated with the first water outlet 5, and the top edge is provided with a second water outlet 11; a detection sensor 12 is arranged in the flow cavity 8. Wherein the waste water port 6 is typically provided with a one-way valve to avoid backflow.

When the water collecting device works, the pipe collecting device 2 controls the water collecting pipe 1 to discharge water, water flows into the innermost buffer cavity 7 in the buffer 3 through the first water inlet 4, if the water flow pressure is overlarge, part of the water flow directly flows out from the waste water port 6 at the top, the water flow pressure is relieved, the residual water flow overflows to the outer buffer cavity 7 from the top opening of the inner buffer cavity 7, the outer buffer cavity 7 is full and overflows to the outer buffer cavity 7, the pressure is relieved through the buffer cavities 7, the water flow finally flows into the second water inlet 10 of the circulation detector 9 from bottom to top gradually and fills the circulation cavity 8 from bottom to top, then flows out from the second water outlet 11 at the top edge, flows for about 1 minute, the cavities are fully rinsed, and the detection sensor 12 starts to detect. On the one hand, the impurity adhesion of the last detection sample is effectively prevented, and the detection accuracy is improved. On the other hand, the water flow always keeps in and out in the detection process, so that dynamic real-time detection is realized, and the detection result is accurate.

Referring to fig. 4 and 5, in one embodiment, the buffer chambers 7 are formed by a plurality of buffer cylinders 13 arranged at intervals from inside to outside. Specifically, a buffer cavity 7 is formed between adjacent buffer cylinders 13, the innermost buffer cylinder 13 self-surrounds a buffer cavity 7, and the outermost buffer cylinder 13 and the inner wall of the buffer 3 surround a buffer cavity 7. Regarding the shape of the buffer tube 13, the cross section thereof may be any shape, preferably circular, which is more advantageous in relieving the pressure of water flow. Further, in order to assist the water flow in completing the overflow action at the top of each buffer chamber 7, there is an overflow space between the top of each buffer cylinder 13 and the top of the buffer 3.

In order to reduce the influence on the next detection, all water in the cavity needs to be emptied after each detection, the middle part of the bottom surface of the cavity of the buffer 3 is low and high, so that the water around is convenient to flow back to the middle; and the bottom of the buffer cylinder 13 is provided with flow openings 14, so as to relieve the pressure of water flow, and simultaneously prevent water flow from directly channeling into the outermost buffer cavity 7 from the flow openings 14 of the innermost buffer cavity 7, and the flow openings 14 of adjacent buffer cylinders 13 are distributed in a staggered manner. The number of the circulation ports 14 is not limited, and in one embodiment, four circulation ports 14 are uniformly distributed at the bottom of each buffer cylinder 13.

Referring to fig. 6, in one embodiment, the detecting sensor 12 includes one or a combination of a temperature sensor, a PH sensor, a dissolved oxygen sensor, a conductivity sensor, and a turbidity sensor for detecting the temperature, PH, dissolved oxygen content, conductivity, and turbidity of water, respectively.

Further, in order to avoid bubbles inhaled by the water intake pipe or bubbles generated by shaking of the unmanned aerial vehicle, the detection result is affected. The bottom surface of the circulation cavity 8 is an arc surface (see fig. 6) with low middle and high periphery or a spiral rising structure, if bubbles exist in the water flow, the bubbles can rise to the top edge along the arc or spiral wall from the bottom of the circulation cavity 8, and flow out from the second water outlet 11 along with the water flow. Meanwhile, the detection sensor 12 is arranged in the middle of the circulation cavity 8, so that contact with rising bubbles is avoided.

The second water inlet 10 of the flow detector 9 may be directly opened from the bottom, or may be opened from the top and connected to the bottom through a water channel 15, and a water leakage hole 16 is formed near the bottom. The choice of both ways depends on the specific pipeline design requirements. In one embodiment, the second water inlet 10 is arranged in a manner selected from the latter, the bottom of the flow-through detector 9 is exposed to the outside of the device, and the piping and the detection sensor 12 are arranged above the flow-through detector 9. At this time, the outer surface of the water channel 15 approximates a reverse cone, the side wall of which is a concave arc surface, and the upper end of which extends to the edge position of the flow detector 9. If air bubbles enter from the water leakage holes 16, the air bubbles can also rise along the concave arc-shaped surface and finally flow out from the second water outlet 11 at the top edge.

For powering water and draining, referring to fig. 2, a water pump 17, preferably a peristaltic pump, capable of forward and reverse rotation is further connected between the water intake pipe 1 and the first water inlet 4 of the buffer 3.

In one embodiment, in order to combine the water quality detection device with the unmanned aerial vehicle, referring to fig. 1 and 2, each component is installed and fixed on a mounting plate 18, an upper shell 19 is connected above the mounting plate 18, and a lower shell 20 is connected below the mounting plate 18; the mounting plate 18 is provided with several booms 21 for connection to the unmanned aerial vehicle, the upper and

lower shells

19, 20 being provided for protection. Specifically, the mounting plate 18 is provided with a plurality of mounting positions, the pipe collector 2, the water pump 17, the buffer 3 and the controller 35 are mounted above the mounting plate 18, and the flow detector 9 is mounted below the mounting plate 18 and partially exposed outside the lower case 20. The lower case 20 is also provided with an opening allowing the water intake pipe 1 to be lifted and lowered. A camera assembly (not shown) may also be mounted to the bottom of the lower housing 20 to facilitate viewing of the inspection location. The image or video information is remotely returned through the camera assembly, a sampling place is determined, a sampling instruction is given to the controller 35, the controller 35 controls all components to start water taking and detecting actions, and after the detection is finished, the water pump 17 is controlled to reversely empty the water sample.

Referring to fig. 7 and 8, regarding the pipe collector 2, in one embodiment, the pipe collector 2 includes a turntable 22 rotatably connected to the mounting plate 18, and a driving motor 23, one axial end of the turntable 22 is connected to the driving motor 23, and the other axial end of the turntable 22 is provided with a passage 24 for allowing the intake pipe 1 to enter and exit. The turntable 22 comprises a turntable body 25 for winding the water intake pipe 1, and limiting plates 26 arranged at two ends of the turntable body 25, and a pipe receiving port 27 communicated with the passage 24 is arranged on the turntable body 25. When in use, the water intake pipe 1 enters the passage 24 in the turntable body 25 from the axial end of the turntable 22, and then stretches out of the pipe receiving opening 27 on the turntable body 25 to be wound on the turntable body 25, and the fixed end of the water intake pipe is connected with the water pump 17.

Further, a plurality of sensing blocks 28 are uniformly distributed on the end face of the limiting plate 26 far away from the driving motor 23 in the circumferential direction, a photoelectric sensing switch 29 matched with the sensing blocks 28 is arranged on the mounting plate 18, and the photoelectric sensing switch and the sensing block are matched with each other to accurately count the retraction length of the water intake pipe 1.

In order to reduce the load of the unmanned aerial vehicle, the pipe collecting device 2 is not provided with a pipe collecting device, but in order to ensure the accuracy of detection data, the sampled water needs to be kept flowing, and therefore the situation that the water pipe 1 cannot be knotted, jammed and the like is required to be obtained. Therefore, the axial length of the turntable body 25 is greater than the outer diameter of the water intake pipe 1 and less than 2 times the outer diameter of the water intake pipe 1. Preferably, the axial length of the dial body 25 is equal to 1.5 times the outer diameter of the water intake pipe 1.

In order to avoid collision and friction with the lower shell 20 when the water intake pipe 1 is retracted and released, and even is clamped on the lower shell 20, referring to fig. 1 and 9, the lower shell 20 is provided with a guide assembly 30, the guide assembly 30 comprises a fixing frame 31 and at least two rollers 32, and the two rollers 32 are rotatably connected with the fixing frame 31; the surfaces of the two rollers 32 are provided with annular grooves 33 matched with the water intake pipe 1. When the water intake pipe 1 is retracted and released, the water intake pipe can move along the space between the two annular grooves 33, and the roller 32 plays a role in guiding and reducing friction.

In addition, the free end of the water intake pipe 1 is connected with a filter 34, a filter screen is arranged in the filter 34 and used for blocking impurities in water, and the upper end of the filter 34 is of a conical structure, so that the water intake pipe 1 is prevented from being entangled by impurities such as water plants and the like and is prevented from being recovered.

On the one hand, the buffer 3 and the flow detector 9 are additionally arranged, water enters the buffer 3 through the water intake pipe 1, and after the water pressure is balanced through a plurality of buffer cavities 7 of the buffer 3, the water gently flows into the flow detector 9 for detection. The edge at the top of the flow detector 9 is provided with a second water outlet 11, water flows in and out, the flowing state is kept, the dynamic real-time detection of water quality is realized, and the detection accuracy is high. On the other hand, each part simple structure, the tube collector 2 reduces the setting of tube collector, restricts the axial dimension of the rotary table body 25 of the tube collector 2 simultaneously, has both reduced volume, weight, has avoided the water intake tube 1 to twine and tie knots, and influences the testing result.

Referring to fig. 10 to 13, the PH detection, the conductivity detection, the dissolved oxygen detection, and the temperature detection are performed on the same water quality with or without a buffer. It is obvious that under the condition of the buffer, each item of data has small fluctuation, and can not change along with the time growth, and the overall data stability is better.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. A real-time water quality detection device based on an unmanned aerial vehicle comprises a pipe collector for collecting and releasing a water intake pipe; the method is characterized in that: further comprises:

the bottom of the buffer is provided with a first water inlet and a first water outlet which are communicated with the water intake pipe, and the top of the buffer is provided with a waste water port; the inner cavity is provided with a plurality of buffer cavities which are nested inside and outside and are open at the top, the first water inlet and the wastewater outlet correspond to the innermost buffer cavity, and the first water outlet corresponds to the outermost buffer cavity; and

A flow detector with a flow cavity inside, a second water inlet communicated with the first water outlet is arranged in the middle of the bottom, and a second water outlet is arranged at the edge of the top; and a detection sensor is arranged in the circulation cavity.

2. The unmanned aerial vehicle-based real-time water quality detection device of claim 1, wherein: the buffer chambers are formed by arranging a plurality of buffer cylinders at intervals from inside to outside, and overflow spaces are reserved between the tops of the buffer cylinders and the tops of the buffers.

3. The unmanned aerial vehicle-based real-time water quality detection device of claim 2, wherein: the middle part of the bottom surface of the inner cavity of the buffer is low and the periphery is high, and the bottom of the buffer cylinder is provided with a circulation port; the circulation openings of the adjacent buffer cylinders are distributed in a staggered manner.

4. The unmanned aerial vehicle-based real-time water quality detection device of claim 1, wherein: the detection sensor comprises one or a combination of a plurality of temperature sensors, PH sensors, dissolved oxygen sensors, conductivity sensors and turbidity sensors.

5. The unmanned aerial vehicle-based real-time water quality detection device of claim 1, wherein: the bottom surface of the circulation cavity is an arc surface or a spiral rising structure with the middle part low and the periphery high.

6. The unmanned aerial vehicle-based real-time water quality detection device of claim 1, wherein: and a water pump capable of rotating positively and negatively is further connected between the water intake pipe and the first water inlet of the buffer.

7. The unmanned aerial vehicle-based real-time water quality detection apparatus of any one of claims 1 to 6, wherein: the pipe collecting device comprises a rotary table and a driving motor, wherein one axial end of the rotary table is connected with the driving motor, and the other axial end of the rotary table is provided with a passage for allowing the water intake pipe to enter and exit; the rotary table comprises a rotary table body used for winding the water intake pipe and limiting plates arranged at two ends of the rotary table body, and a pipe collecting port communicated with the passage is arranged on the rotary table body.

8. The unmanned aerial vehicle-based real-time water quality detection device of claim 7, wherein: the axial length of the turntable main body is greater than the outer diameter of the water intake pipe and less than 2 times of the outer diameter of the water intake pipe.

9. The unmanned aerial vehicle-based real-time water quality detection device of claim 1, wherein: a guide assembly is arranged below the pipe collector and comprises a fixed frame and at least two rollers, and the two rollers are rotatably connected with the fixed frame; the surfaces of the two rollers are respectively provided with an annular groove matched with the water intake pipe.

10. The unmanned aerial vehicle-based real-time water quality detection device of claim 1, wherein: the free end of the water intake pipe is connected with a filter; a filter screen is arranged in the filter, and the upper end of the filter is of a conical structure.