Automatic groundwater level measuring device and control method for water conservancy projects

Abstract

The present application discloses an automatic groundwater level measuring device and control method for water conservancy projects. When the valve function part is in a state of conducting the water intake pipe, the peristaltic pump can complete the water pumping process; when the valve function part is in a state of blocking the water intake pipe, the water intake pipe is in a blocked state as a whole, and the external environment is blocked from the groundwater environment; when the valve function part is in a state of conducting the water intake pipe from the upstream position of the peristaltic pump to the inside of the base tube, the water intake pipe emptying process is completed; when the valve function part is in a state of conducting the water intake pipe from the upstream position of the peristaltic pump to the inside of the base tube, the water discharge process is completed; the valve function part is in a state of conducting the water intake pipe from the upstream position of the peristaltic pump to the inside of the base tube, and the water discharge process is completed; the automatic groundwater level measuring device and control method for water conservancy projects provided by the present invention, due to the working characteristics of the peristaltic pump and the setting of the valve function part, ensure that the current groundwater sample is obtained each time sampling is performed, and the external environment can be well isolated from the groundwater environment. When one of the peristaltic pump and the water level detection radar fails, both can serve as backups for water level testing.

Description

Technical Field

[0001] The invention relates to the field of groundwater monitoring, and in particular to an automatic groundwater level measuring device and a control method for water conservancy projects. Background Art

[0002] In water conservancy work, groundwater level monitoring is a relatively important task, which is of great significance for groundwater resource management, understanding the dynamic changes of groundwater systems, and rationally utilizing and protecting groundwater resources. Generally, long-term and digital continuous monitoring is required.

[0003] There are also various ways to monitor the specific water level. The methods that can generally be automated and digitized are pressure sensor method and radar sounding method. Radar sounding method is a method of measuring groundwater level based on the reflection principle of radar waves. The groundwater level is determined by emitting radar waves underground and measuring the time and intensity of the radar waves reflected from underground. The submersible pressure sensor method is a method of directly monitoring the bottom water level of a well. The submersible pressure sensor is installed in the research well, the lower end of the sensor is connected to the bottom of the well, and the changes in the water pressure at the bottom of the well are observed to reflect the changes in the groundwater level.

[0004] At present, the process of extracting groundwater is prone to interference or impact on the groundwater environment. At the same time, the various sensors used to monitor water levels are prone to certain deviations, and the deviations are difficult to identify. Summary of the invention

[0005] The main purpose of the present invention is to provide an automatic groundwater level measuring device and control method for water conservancy projects, aiming to solve the problem that the current process of groundwater extraction is prone to interference or impact on the groundwater environment, and the various sensors used for water level monitoring are prone to certain deviations, and the deviations are difficult to identify.

[0006] In order to achieve the above object, the present invention provides an automatic groundwater level measuring device for water conservancy projects, comprising:

[0007] The base tube has a closed structure in the upper part of the interior in the height direction;

[0008] A peristaltic pump is disposed in the base tube and below the closed structure. A water intake pipe is installed on the peristaltic pump, and the upper end of the water intake pipe passes through the closed structure.

[0009] A valve function unit is arranged on the water intake pipe, and the working modes of the valve function unit include connecting the water intake pipe, blocking the water intake pipe, connecting the water intake pipe located at the upstream position of the peristaltic pump to the inside of the base tube, and connecting the water intake pipe located at the upstream position of the peristaltic pump to the inside of the base tube;

[0010] A water level detection radar, installed on the base tube and located below the closed structure;

[0011] A control module, controlling the operation of the valve function unit, the peristaltic pump and the water level detection radar;

[0012] A power supply is electrically connected to the peristaltic pump, the valve function unit, the water level detection radar and the control module.

[0013] Furthermore, a flow sensor is provided on the water intake pipe and downstream of the peristaltic pump.

[0014] Furthermore, the valve function part includes a T-shaped tube, a first conduction switch, a second conduction switch and a third conduction switch, the T-shaped tube includes a main pipe connected to the water intake pipe in the length direction and a branch pipe connected to the middle of the length direction of the main pipe, the first conduction switch and the second conduction switch are arranged at the upper end and the lower end of the length direction of the main pipe, and the third conduction switch is arranged on the branch pipe.

[0015] Furthermore, the automatic groundwater level measuring device also includes an automatic sampling device, the upper free end of the water intake pipe extends downward, and the automatic sampling device includes:

[0016] Sampling base;

[0017] A mounting plate, which can be rotatably mounted on the sampling base, and a plurality of mounting slots are arranged on the upper surface of the mounting plate;

[0018] A driving motor is arranged corresponding to the receiving plate and drives the receiving plate to rotate;

[0019] The shielding cover is fixed to the sampling base and covers the installation slot. The upper surface of the shielding cover is provided with a notch penetrating the thickness direction thereof, and the position of the notch corresponds to the upper free end of the water intake pipe.

[0020] Furthermore, a solar panel is disposed on the upper surface of the shielding cover, the power source is rechargeable, the solar panel is electrically connected to the power source, a cleaning brush is led out from the receiving plate, and the cleaning brush extends onto the solar panel.

[0021] Furthermore, the water intake pipe upstream of the peristaltic pump includes a plurality of hard pipe sections and a soft pipe section connected between two of the hard pipe sections, and the hard pipe section is connected to the base tube.

[0022] Furthermore, a camera assembly is arranged at the lower end of the base tube, and the camera assembly is arranged on a horizontal plane to avoid the water level detection radar.

[0023] Furthermore, the base tube includes an outer tube and an inner tube detachably connected to the inner wall of the outer tube, and the closed structure and the peristaltic pump are arranged in the inner tube.

[0024] The present invention also provides a control method, which is applied to the above-mentioned automatic groundwater level measuring device, comprising:

[0025] S1, adjusting the valve function part to conduct the water intake pipe located at the downstream position of the peristaltic pump to the state in the base tube, starting the peristaltic pump to work in the forward direction to complete the drainage process;

[0026] S2, adjusting the valve function part to the state of conducting the water intake pipe, starting the peristaltic pump to work in the forward direction to complete the water pumping process;

[0027] S3. Adjust the valve function part to conduct the water intake pipe located at the downstream position of the peristaltic pump to the base tube to complete the water discharge process.

[0028] Furthermore, the control method further includes:

[0029] S4, controlling the water level detection radar to work, and calculating the first water level according to the data sent by the water level detection radar;

[0030] The steps of S2 include:

[0031] S201, adjusting the valve function part to a state of conducting the water intake pipe, starting the peristaltic pump and starting to receive the signal transmitted by the flow sensor, wherein the time point of starting the peristaltic pump is marked as the starting time;

[0032] S202, when the flow rate sensor is greater than a preset value, it is marked as water drawing time;

[0033] S203, calculating the difference between the water pumping time and the starting point as the working time, and calculating the second water level in combination with the working intensity and working time of the peristaltic pump;

[0034] S204, judging the working state of the entire groundwater level automatic measuring device according to the first water level and the second water level;

[0035] S205, continue to complete the water pumping process.

[0036] The present invention provides an automatic groundwater level measuring device and control method for water conservancy projects. When the valve function part is in a state of conducting the water intake pipe, the water intake pipe is in a conducting state as a whole, and the peristaltic pump can complete the water pumping process through the water intake pipe; when the valve function part is in a state of blocking the water intake pipe, the water intake pipe is in a blocking state as a whole, and the external environment is blocked from the groundwater environment; when the valve function part is in a state of conducting the water intake pipe from the upstream position of the peristaltic pump to the base tube, the peristaltic pump can draw air into the base tube at this time, thereby completing the water intake pipe emptying process; the valve function part is in a state of conducting the water intake pipe from the upstream position of the peristaltic pump to the base tube, and the peristaltic pump can work to draw air into the base tube, thereby completing the water intake pipe emptying process. When the tube is located at the upstream position of the peristaltic pump to the state inside the base tube, the air pressure in the part of the water intake pipe upstream of the peristaltic pump is balanced, and the water flow inside it falls naturally, thus completing the water discharge process; due to the working characteristics of the peristaltic pump and the setting of the valve function part, it is ensured that each sampling obtains the current groundwater sample while also being able to well isolate the external environment from the groundwater environment; the water level detection radar is installed in the base tube and is located below the closed structure to obtain water level information by sensing. When one of the peristaltic pump and the water level detection radar fails, the two can serve as backups for water level testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of a device for automatically measuring underground water level in a water conservancy project according to a first embodiment of the present invention;

[0038] Figure 2 It is a cross-sectional view through the central axis of the automatic groundwater level measuring device for water conservancy projects according to the first embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the valve function part in the automatic groundwater level measuring device for water conservancy projects according to the first embodiment of the present invention;

[0040] Figure 4 : is a schematic diagram of a first embodiment of the present invention for an automatic groundwater level measuring device for a water conservancy project (first viewing angle and partially hiding the base tube);

[0041] Figure 5 : is a schematic diagram of a first embodiment of the present invention for an automatic groundwater level measuring device for a water conservancy project (second viewing angle and part of the base tube is hidden);

[0042] Figure 6 It is a schematic diagram of a peristaltic pump used in an automatic groundwater level measuring device for a water conservancy project according to the first embodiment of the present invention;

[0043] Figure 7 is a schematic diagram of a device for automatically measuring underground water level in a water conservancy project according to a second embodiment of the present invention;

[0044] Figure 8It is a schematic diagram of an automatic sampling device in a schematic diagram of an automatic groundwater level measuring device for a water conservancy project according to a second embodiment of the present invention;

[0045] Fig. 9 is a schematic diagram of an automatic sampling device in a schematic diagram of an automatic groundwater level measuring device for a water conservancy project according to a second embodiment of the present invention (without the shielding cover);

[0046] Fig.10 It is a schematic diagram of the steps of the control method of the third embodiment of the present invention.

[0047] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0049] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0050] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0051] Reference Figures 1 to 9 In one embodiment of the present invention, a device for automatically measuring groundwater level in a water conservancy project comprises:

[0052] The base tube 100 has a closed structure 110 partitioned at the upper part in the height direction;

[0053] The peristaltic pump 200 is disposed in the base tube 100 and is located below the closed structure 110. A water intake pipe 210 is installed on the peristaltic pump 200, and the upper end of the water intake pipe 210 passes through the closed structure 110.

[0054] The valve function part 300 is arranged on the water intake pipe 210. The working modes of the valve function part 300 include connecting the water intake pipe 210, blocking the water intake pipe 210, connecting the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the inside of the base tube 100, and connecting the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the inside of the base tube 100;

[0055] A water level detection radar 400 is installed on the base tube 100 and is located below the closed structure 110;

[0056] A control module, controlling the operation of the valve function unit 300, the peristaltic pump 200 and the water level detection radar 400;

[0057] A power supply is electrically connected to the peristaltic pump 200 , the valve function unit 300 , the water level detection radar 400 and the control module.

[0058] In the prior art, the process of extracting groundwater is prone to interference or impact on the groundwater environment; at the same time, the water level monitoring methods of various sensors are prone to certain deviations, and the deviations are difficult to identify.

[0059] In the present invention, a closed structure 110 is provided in the upper part of the base tube 100 in the height direction. The base tube 100 is installed at a location where groundwater needs to be collected, such as a corresponding water well. The circumference of the base tube 100 forms a seal with the fixed foundation, and the closed structure 110 can isolate the external environment from the groundwater environment, thereby minimizing the interference with the groundwater environment. The material of the base tube 100 can be a polymer or a metal, etc., and a suitable selection is made according to the specific use requirements.

[0060] The peristaltic pump 200 is disposed in the base tube 100 and is located below the closed structure 110. A water intake pipe 210 is installed on the peristaltic pump 200, and the upper end of the water intake pipe 210 passes through the closed structure 110. The peristaltic pump 200 works to draw water, and under certain circumstances, the working data of the peristaltic pump 200 can also provide water level information.

[0061] The valve function part 300 is arranged on the water intake pipe 210. The working modes of the valve function part 300 include conducting the water intake pipe 210, blocking the water intake pipe 210, conducting the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the base tube 100, and conducting the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the base tube 100. The valve function part 300 is a system that can realize switching between various states. The specific setting method of the valve function part 300 can be various, and the state switching can be realized by using structures such as a three-way valve or a solenoid valve.

[0062] When the valve function part 300 is in the state of conducting the water intake pipe 210, the water intake pipe 210 is in the conducting state as a whole, and the peristaltic pump 200 can complete the water pumping process through the water intake pipe 210; when the valve function part 300 is in the state of blocking the water intake pipe 210, the water intake pipe 210 is in the blocking state as a whole, and the external environment is blocked from the groundwater environment; when the valve function part 300 is in the state of conducting the water intake pipe 210 from the upstream position of the peristaltic pump 200 to the base tube 100, the peristaltic pump 200 can draw the air in the base tube 100 to complete the emptying process of the water intake pipe 210; when the valve function part 300 is in the state of conducting the water intake pipe 210 from the upstream position of the peristaltic pump 200 to the base tube 100, the air pressure of the part of the water intake pipe 210 located upstream of the peristaltic pump 200 is balanced, and the water flow in it falls naturally, thereby completing the water discharge process. The possible structure of the valve function part 300 will be described in the subsequent embodiments. Specifically, when using the automatic groundwater level measuring device, multiple water inlets can be added to the bottom of the water intake pipe 210 (extending as deep as possible) according to different water qualities, or a leak-proof net can be added at the end to prevent the entire water intake pipe 210 from failing. The increase in the number of water inlets does not affect the water-drawing speed of the peristaltic pump 200.

[0063] The water level detection radar 400 is installed on the base tube 100 and is located below the closed structure 110. The water level detection radar 400 is not limited to being directly installed on the closed structure 110, and the purpose of the setting is to obtain water level information in a sensing manner. The wave generated by the water level detection radar 400 can be ultrasonic waves or the like.

[0064] The control module controls the operation of the valve function unit 300, the peristaltic pump 200 and the water level detection radar 400, including control of start-up, shutdown and receiving relevant data.

[0065] The power supply is electrically connected to the peristaltic pump 200, the valve function unit 300, the water level detection radar 400 and the control module to provide a working voltage. The power supply of the peristaltic pump 200, the valve function unit 300 and the water level detection radar 400 can be wired, battery or battery connected to a solar panel, etc., which is selected according to the actual situation. In the implementation process, a rain cap can be set corresponding to the automatic groundwater level measuring device, and it can be set at the top to protect the related structures below it. In particular, when the upper end of the automatic groundwater level measuring device is set higher, the rainproof effect of the entire device can be greatly improved.

[0066] During use, the sensing information of the water level detection radar 400 is transmitted to the control module, and the water level value can be obtained through data calculation. In the process of drawing water, first, the valve function part 300 is controlled to conduct the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the state in the base tube 100, and the peristaltic pump 200 is driven to work to draw the air in the base tube 100, thereby completing the emptying process of the water intake pipe 210; then, the valve function part 300 is controlled to conduct the water intake pipe 210, and the peristaltic pump 200 is driven to complete the water drawing process through the water intake pipe 210; then, the valve function part 300 is controlled to conduct the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the state in the base tube 100, and the water flow in the water intake pipe 210 falls naturally, thereby completing the water discharge process; finally, the valve function part 300 is controlled to block the water intake pipe 210, and the external environment is blocked from the groundwater environment. During the whole process, due to the working characteristics of the peristaltic pump 200 and the setting of the valve function part 300, it is ensured that the current groundwater sample is obtained each time the sampling is carried out, and the external environment and the groundwater environment can be well isolated. It is particularly noted that due to the existence of the emptying process, the length of time that the peristaltic pump 200 draws water can also reflect the value of the groundwater level.

[0067] In summary, when the valve function part 300 is in a state of conducting the water intake pipe 210, the water intake pipe 210 is in a conducting state as a whole, and at this time the peristaltic pump 200 can complete the water pumping process through the water intake pipe 210; when the valve function part 300 is in a state of blocking the water intake pipe 210, the water intake pipe 210 is in a blocking state as a whole, and at this time the external environment is blocked from the groundwater environment; when the valve function part 300 is in a state of conducting the water intake pipe 210 and is located in the upstream position of the peristaltic pump 200 to the base tube 100, the peristaltic pump 200 can work to draw in the air in the base tube 100, thereby completing the emptying process of the water intake pipe 210; the valve function part 300 is in a state of conducting the water intake pipe 210 and is located in the upstream position of the peristaltic pump 200 When the upstream position of the peristaltic pump 200 is in the state of being inside the base tube 100, the air pressure in the water intake pipe 210 located upstream of the peristaltic pump 200 is balanced, and the water flow therein falls naturally, thereby completing the water discharge process; due to the working characteristics of the peristaltic pump 200 and the setting of the valve function part 300, it is ensured that the current groundwater sample is obtained each time the sampling is carried out, and the external environment and the groundwater environment can be well isolated; the water level detection radar 400 is installed on the base tube 100 and is located below the closed structure 110 to obtain water level information by sensing. When one of the peristaltic pump 200 and the water level detection radar 400 fails, the two can serve as backups for water level testing.

[0068] Reference Figures 1 to 6 In one embodiment, a flow sensor 211 is provided on the water intake pipe 210 and downstream of the peristaltic pump 200 .

[0069] Whether the water intake pipe 210 has already drawn groundwater can be determined in a variety of ways, such as flow or weight sensors. At present, the research and development foundation for micro flow sensors is relatively solid, and flexible monitoring can be achieved at a relatively low cost. In this embodiment, by setting a flow sensor 211 at the downstream position of the water intake pipe 210, when the flow sensor 211 obtains relevant sensor data, it can be determined that the peristaltic pump 200 has drawn groundwater. In further optimization schemes, the data acquisition accuracy of the flow sensor 211 can also be improved. The working efficiency and status of the peristaltic pump 200 can be verified and determined by calculating the flow rate, and the process of accurate sampling can also be completed.

[0070] Reference Figures 1 to 6 In one embodiment, the valve function unit 300 includes a T-shaped tube 310, a first conduction switch 320, a second conduction switch 330 and a third conduction switch 340. The T-shaped tube 310 includes a main pipe 311 connected to the water intake pipe 210 in the length direction and a branch pipe 312 connected to the middle of the length direction of the main pipe 311. The first conduction switch 320 and the second conduction switch 330 are arranged at the upper end and the lower end of the length direction of the main pipe 311, and the third conduction switch 340 is arranged on the branch pipe 312.

[0071] In this embodiment, by providing a plurality of valve structures (a first conduction switch 320, a second conduction switch 330 and a third conduction switch 340) and a T-tube 310, the working mode of the valve function unit 300 is made flexible; specifically, adaptation under various functional conditions is achieved through the switch matching between the first conduction switch 320, the second conduction switch 330 and the third conduction switch 340. For example, when the automatic groundwater level measuring device needs to start the sampling process, the third conduction switch 340 is closed, and the first conduction switch 320 and the second conduction switch 330 are opened. At this time, the peristaltic pump 200 can complete the water pumping process through the water intake pipe 210; when the automatic groundwater level measuring device needs to start the emptying process, the second conduction switch 330 is closed, and the first conduction switch 320 and the third conduction switch 340 are opened. At this time, the peristaltic pump 200 discharges the water in the upper section of the water intake pipe 210 to the entire system; when the automatic groundwater level measuring device needs to complete the drainage process, the first conduction switch 320 is closed, and the second conduction switch 330 and the third conduction switch 340 are opened. At this time, the water in the lower section of the water intake pipe 210 falls back to the horizontal plane of the groundwater.

[0072] Reference Figures 7 to 9 In one embodiment, the automatic groundwater level measuring device further comprises an automatic sampling device 500, the upper free end of the water intake pipe 210 extends downward, and the automatic sampling device 500 comprises:

[0073] Sampling base 510;

[0074] A supporting plate 520 can be rotatably mounted on the sampling base 510, and a plurality of mounting slots 521 are arranged around the upper surface of the supporting plate 520;

[0075] A driving motor is provided corresponding to the receiving plate 520 and drives the receiving plate 520 to rotate;

[0076] The shielding cover 530 is fixed to the sampling base 510 and covers the installation slot 521 . The upper surface of the shielding cover 530 is provided with a notch 531 penetrating the thickness direction thereof. The position of the notch 531 corresponds to the upper free end of the water intake pipe 210 .

[0077] In this embodiment, considering that the automatic groundwater level measuring device has a monitoring function, its setting location is sometimes relatively remote, and it is unrealistic to independently set up a water quality analysis system and a communication system on each automatic groundwater level measuring device. Then an automatic sampling device 500 is set accordingly, and sampling can be performed regularly, so as to retain the monitoring records, and the specific sampling time interval can be adjusted according to actual needs. The sampling bottle 010 is correspondingly installed in the installation slot 521, and through the rotation of the driving motor, different sampling bottles 010 can correspond to receive the water flowing down from the water intake pipe 210 and passing through the gap 531 on the shielding cover 530. During use, when the sampling bottle 010 is installed in the installation slot 521, its upper opening is preferably sealed with the shielding cover 530; for example, the cross section of the shielding cover 530 is an inverted U-shape, and the sampling bottle 010 is protected by the shielding cover 530 and forms a seal.

[0078] Reference Figures 7 to 9 In one embodiment, a solar panel 532 is disposed on the upper surface of the shielding cover 530, the power source is rechargeable, the solar panel 532 is electrically connected to the power source, a cleaning brush 521 is led out from the supporting plate 520, and the cleaning brush 521 extends to the solar panel 532.

[0079] In this embodiment, the solar panel 532 is added to provide power for the entire groundwater level automatic measuring device, and in particular, the rotation characteristic of the supporting plate 520 is utilized to clean the solar panel 532. During the rotation of the supporting plate 520, the cleaning brush also rotates, and during this process, the solar panel 532 is cleaned.

[0080] In one embodiment, the water intake pipe 210 upstream of the peristaltic pump 200 includes a plurality of hard pipe sections and a soft pipe section connected between two of the hard pipe sections, and the hard pipe section is connected to the base tube 100 .

[0081] In this embodiment, in order to prevent the water intake pipe 210 from blocking and affecting the accuracy of the water level measurement by the water level detection radar 400, the water intake pipe 210 below the water level detection radar 400 should be a hard pipe as much as possible. Since the length of the water intake pipe 210 may be relatively large, it is convenient to set the water intake pipe 210 as a connection structure, which reduces the difficulty of transportation and installation. In the implementation process, the valve function part 300 can be conveniently set on the hose section. The connection method between the hard pipe section and the base tube 100 can also be various, and can even be an integrated structure (for example, when the foundation is formed, the processing is realized at the same time).

[0082] Reference Figures 1 to 6In one embodiment, a camera assembly 600 is disposed at the lower end of the base tube 100 , and the camera assembly 600 is disposed on a horizontal plane to avoid the water level detection radar 400 .

[0083] In this embodiment, by adding a camera component 600, the state of groundwater and the state of the matrix (sand or soil foundation with groundwater underneath) are visually monitored. The information obtained by the above camera component 600 does not necessarily need to be continuous, and the information obtained by the camera component 600 does not necessarily need to be sent continuously.

[0084] Reference Figure 2 In one embodiment, the base tube 100 includes an outer tube and an inner tube detachably connected to the inner wall of the outer tube, and the closed structure 110 and the peristaltic pump 200 are arranged in the inner tube.

[0085] In this embodiment, the base tube 100 is split, the construction on the base is realized through the outer tube, and the installation of each part is completed through the inner tube. For example, the outer tube is driven into the soil base through relevant machinery, the peristaltic pump 200, the valve function part 300, the water level detection radar 400 and the control module are installed in the inner tube, and finally the inner tube is installed in the outer tube. The connection method of the inner tube on the outer tube can be hanging, threaded connection, etc., and it is better to form a better seal between the two.

[0086] Reference Fig.10 The present invention also provides a control method, using the above-mentioned automatic groundwater level measuring device, comprising:

[0087] S1, adjusting the valve function part 300 to conduct the water intake pipe 210 located at the downstream position of the peristaltic pump 200 to the base tube 100, starting the peristaltic pump 200 to work in the forward direction to complete the drainage process;

[0088] S2, adjusting the valve function part 300 to a state of conducting the water intake pipe 210, starting the peristaltic pump 200 to work in the forward direction to complete the water pumping process;

[0089] S3. Adjust the valve function part 300 to conduct the water intake pipe 210 located at the downstream position of the peristaltic pump 200 to the base tube 100 to complete the water discharge process.

[0090] During use, the sensing information of the water level detection radar 400 is transmitted to the control module, and the water level value can be obtained through data calculation. In the process of drawing water, first, the valve function part 300 is controlled to conduct the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the state in the base tube 100, and the peristaltic pump 200 is driven to work to draw the air in the base tube 100, thereby completing the emptying process of the water intake pipe 210; then, the valve function part 300 is controlled to conduct the water intake pipe 210, and the peristaltic pump 200 is driven to complete the water drawing process through the water intake pipe 210; then, the valve function part 300 is controlled to conduct the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the state in the base tube 100, and the water flow in the water intake pipe 210 falls naturally, thereby completing the water discharge process. Finally, the valve function part 300 can also be controlled to block the water intake pipe 210, and the external environment is blocked from the groundwater environment. It is particularly noted that, due to the existence of the emptying process, the length of time that the peristaltic pump 200 draws water can also reflect the value of the groundwater level. During the entire process, due to the working characteristics of the peristaltic pump 200 and the setting of the valve function unit 300, it is ensured that each sampling obtains the current groundwater sample, and the external environment and the groundwater environment can be well isolated.

[0091] Furthermore, the control method further includes:

[0092] S4, controlling the water level detection radar 400 to work, and calculating the first water level according to the data sent by the water level detection radar 400;

[0093] The steps of S2 include:

[0094] S201, adjusting the valve function unit 300 to a state of conducting the water intake pipe 210, starting the peristaltic pump 200 and starting to receive the signal transmitted by the flow sensor 211, wherein the time point of starting the peristaltic pump 200 is marked as the starting time;

[0095] S202, when the flow sensor 211 is greater than the preset value, it is marked as the water drawing time;

[0096] S203, calculating the difference between the water pumping time and the starting point as the working time, and calculating the second water level in combination with the working intensity and working time of the peristaltic pump 200;

[0097] S204, judging the working state of the entire groundwater level automatic measuring device according to the first water level and the second water level;

[0098] S205, continue to complete the water pumping process.

[0099] In this embodiment, mutual evaluation is achieved by controlling the work of the water level detection radar 400 and the work of the peristaltic pump 200. In the step of S4, the water level can be calculated as the first water level through the information obtained by the water level detection radar 400. In the step of S2, it is limited that the water discharge process is completed after each water pumping is completed, so a strong correlation is formed between the time required for each water pumping and the groundwater height. A flow sensor 211 is provided on the water intake pipe 210 and is located downstream of the peristaltic pump 200. According to the signal obtained by the flow sensor 211, the time difference between the water pumping time and the starting point can be calculated. At this time, combined with the working intensity of the peristaltic pump 200, the second water level can be calculated. If the gap between the first water level and the second water level is large, it can be determined that the work of the entire groundwater level automatic measurement device is abnormal. The gap between the above first water level and the second water level can be a difference or a ratio, etc. It is particularly noted that when one of the peristaltic pump 200 and the water level detection radar 400 fails, the two can serve as backups for water level testing.

[0100] In summary, the automatic groundwater level measuring device and control method for water conservancy projects provided by the present invention, when the valve function part 300 is in a state of conducting the water intake pipe 210, the water intake pipe 210 is in a conducting state as a whole, and at this time the peristaltic pump 200 can complete the water pumping process through the water intake pipe 210; when the valve function part 300 is in a state of blocking the water intake pipe 210, the water intake pipe 210 is in a blocking state as a whole, and at this time the external environment is blocked from the groundwater environment; when the valve function part 300 is in a state of conducting the water intake pipe 210 and is located at the upstream position of the peristaltic pump 200 to the base tube 100, the peristaltic pump 200 can work to draw in the air in the base tube 100, thereby completing the emptying process of the water intake pipe 210; When the part 300 is in the state of conducting the water intake pipe 210 located at the upstream position of the peristaltic pump 200 to the inside of the base tube 100, the air pressure in the part of the water intake pipe 210 located upstream of the peristaltic pump 200 is balanced, and the water flow therein falls naturally, thereby completing the water discharge process; due to the working characteristics of the peristaltic pump 200 and the setting of the valve function part 300, it is ensured that the current groundwater sample is obtained each time the sampling is carried out, and the external environment can be well isolated from the groundwater environment; the water level detection radar 400 is installed on the base tube 100 and is located below the closed structure 110 to obtain water level information by sensing. When one of the peristaltic pump 200 and the water level detection radar 400 fails, the two can serve as backups for water level testing.

[0101] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic groundwater level measuring device for water conservancy projects, characterized in that: include: The base tube (100) has a closed structure (110) in the upper part of the interior in the height direction; A peristaltic pump (200) is disposed in the base tube (100) and is located below the closed structure (110); a water intake pipe (210) is installed on the peristaltic pump (200); and the upper end of the water intake pipe (210) passes through the closed structure (110); a valve function unit (300) disposed on the water intake pipe (210); the working modes of the valve function unit (300) include connecting the water intake pipe (210), blocking the water intake pipe (210), connecting the water intake pipe (210) located at an upstream position of the peristaltic pump (200) to the inside of the base tube (100), and connecting the water intake pipe (210) located at an upstream position of the peristaltic pump (200) to the inside of the base tube (100); A water level detection radar (400) is installed on the base tube (100) and is located below the closed structure (110); A control module, controlling the operation of the valve function unit (300), the peristaltic pump (200) and the water level detection radar (400); A power source is electrically connected to the peristaltic pump (200), the valve function unit (300), the water level detection radar (400), and the control module.

2. The automatic groundwater level measuring device for water conservancy projects according to claim 1 is characterized in that: A flow sensor (211) is provided on the water intake pipe (210) and downstream of the peristaltic pump (200).

3. The automatic groundwater level measuring device for water conservancy projects according to claim 1 is characterized in that: The valve function unit (300) comprises a T-shaped tube (310), a first conduction switch (320), a second conduction switch (330) and a third conduction switch (340); the T-shaped tube (310) comprises a main pipe (311) connected to the water intake pipe (210) in the length direction and a branch pipe (312) connected to the middle of the main pipe (311) in the length direction; the first conduction switch (320) and the second conduction switch (330) are arranged at the upper end and the lower end of the main pipe (311) in the length direction; and the third conduction switch (340) is arranged on the branch pipe (312).

4. The automatic groundwater level measuring device for water conservancy projects according to claim 1 is characterized in that: The automatic groundwater level measuring device further comprises an automatic sampling device (500), the upper free end of the water intake pipe (210) extending downward, and the automatic sampling device (500) comprising: Sampling base (510); A receiving plate (520) is rotatably mounted on the sampling base (510), and a plurality of mounting slots (521) are arranged around the upper surface of the receiving plate (520); A driving motor is arranged corresponding to the receiving plate (520) and drives the receiving plate (520) to rotate; The shielding cover (530) is fixed to the sampling base (510) and covers the installation slot (521) accordingly. The upper surface of the shielding cover (530) is provided with a notch (531) penetrating the thickness direction thereof. The position of the notch (531) corresponds to the upper free end of the water intake pipe (210).

5. The automatic groundwater level measuring device for water conservancy projects according to claim 4 is characterized in that: A solar panel (532) is provided on the upper surface of the shielding cover (530); the power source is rechargeable; the solar panel (532) is electrically connected to the power source; a cleaning brush (521) is led out from the receiving plate (520); the cleaning brush (521) extends onto the solar panel (532).

6. The automatic groundwater level measuring device for water conservancy projects according to any one of claims 1 to 5, characterized in that: The water intake pipe (210) upstream of the peristaltic pump (200) comprises a plurality of hard pipe sections and a soft pipe section connected between two of the hard pipe sections, and the hard pipe section is connected to the base tube (100).

7. The automatic groundwater level measuring device for water conservancy projects according to any one of claims 1 to 5, characterized in that: The base cylinder (100) comprises an outer cylinder and an inner cylinder detachably connected to the inner wall of the outer cylinder, and the closed structure (110) and the peristaltic pump (200) are arranged in the inner cylinder.

8. A control method, applied to the automatic groundwater level measuring device according to any one of claims 2 to 7, characterized in that: include: S1, adjusting the valve function part (300) to a state where the water intake pipe (210) located at a position downstream of the peristaltic pump (200) is connected to the base tube (100), and starting the peristaltic pump (200) to work in the forward direction to complete the drainage process; S2, adjusting the valve function unit (300) to a state of conducting the water intake pipe (210), starting the peristaltic pump (200) to work in the forward direction to complete the water intake process; S3, adjusting the valve function part (300) to conduct the water intake pipe (210) located at the downstream position of the peristaltic pump (200) to the base tube (100) to complete the water discharge process.

9. The control method according to claim 8, characterized in that: The control method further comprises: S4, controlling the water level detection radar (400) to work, and calculating a first water level according to data sent by the water level detection radar (400); The steps of S2 include: S201, adjusting the valve function unit (300) to a state of conducting the water intake pipe (210), starting the peristaltic pump (200) and starting to receive signals transmitted by the flow sensor (211), wherein the time point when the peristaltic pump (200) is started is marked as the starting time; S202, when the flow sensor (211) is greater than a preset value, the time point is marked as water drawing time; S203, calculating the difference between the water pumping time and the starting point as the working time, and calculating the second water level in combination with the working intensity and working time of the peristaltic pump (200); S204, judging the working state of the entire groundwater level automatic measuring device according to the first water level and the second water level; S205, continue to complete the water pumping process.

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