Sampling device and sampling method

Abstract

Embodiments of the present application provide a sampling device and a sampling method. The sampling device comprises a control assembly, a filtration assembly, and a support assembly. The filtration assembly comprises: a filter membrane component, the filter membrane component being detachably loaded onto the support assembly; and a fluid pipe, wherein one end of the fluid pipe is communicated with the filter membrane component, and the other end of the fluid pipe is communicated with the control assembly. The control assembly is used for performing a suction filtration operation on a liquid to be tested, so that the liquid to be tested flows through the filter membrane component and then flows into the control assembly by means of the fluid pipe, and flows out of a water outlet of the control assembly, thereby achieving sampling. The present application enables improved sampling efficiency and accuracy.

Description

Sampling equipment and sampling methods Technical Field

[0001] This invention relates to the field of water sampling technology, and more particularly to sampling equipment and sampling methods. Background Technology

[0002] When conducting biodiversity surveys, it is usually necessary to carry out large-scale, remote, continuous collection and filtration of deoxyribonucleic acid (DNA) and microorganisms in the aquatic environment.

[0003] In related technologies, operators transport collected water samples to a laboratory for filtration and analysis. However, this method has low sampling efficiency and is prone to problems such as low accuracy of test results due to water sample contamination.

[0004] Summary of the Invention

[0005] In view of the above, it is necessary to propose a sampling device and sampling method that can solve the problems of low sampling efficiency and low sampling accuracy.

[0006] In a first aspect, embodiments of this application provide a sampling device, which includes a control component, a filtration component, and a support component; wherein, the filtration component includes: a filter membrane component, which is detachably mounted to the support component; a fluid conduit, one end of which is connected to the filter membrane component, and the other end of which is connected to the control component; the control component is used to perform a filtration operation on the liquid to be tested, so that after the liquid to be tested flows through the filter membrane component, it flows into the control component through the fluid conduit and flows out from the outlet of the control component, thereby realizing sampling.

[0007] In one feasible embodiment, in the sampling device provided in the embodiments of this application, the support component includes a filter connector and a telescopic component, the filter connector is connected to the telescopic component, the filter connector is used to load at least one of the filter membrane components, and the fluid pipeline is loaded to the telescopic component.

[0008] In one feasible embodiment, in the sampling device provided in the present application, the filtration assembly further includes a coarse filtration section, which is installed at the inlet of the filter membrane component and is used to coarsely filter the liquid to be tested entering the filter membrane component.

[0009] In one feasible embodiment, in the sampling device provided in the present application, the filter membrane component includes a filter membrane and a filter membrane storage section. The filter membrane is stored in the filter membrane storage section, and the filter membrane allows the liquid to be tested to pass through and collect biological samples therein.

[0010] In one feasible embodiment, in the sampling device provided in the embodiments of this application, the control component includes a power component and a controller. The power component is connected to the controller and the fluid pipeline respectively. The power component is used to respond to the preset command output by the controller, determine the rotation direction, and drive the flow direction of the liquid to be tested in the fluid pipeline.

[0011] In one feasible embodiment, in the sampling device provided in the present application, the control component further includes a parameter acquisition unit, which is used to acquire parameters of the liquid to be tested flowing in through the fluid pipe.

[0012] In one feasible embodiment, in the sampling device provided in the embodiments of this application, the parameter acquisition unit includes a plurality of preset sensors, which are used to acquire preset parameters of the liquid to be tested.

[0013] In one feasible embodiment, in the sampling device provided in this application, the preset sensor includes a flow sensor, and the corresponding preset parameter includes instantaneous flow rate; the flow sensor is connected to the controller, and when the instantaneous flow rate is less than the preset flow rate threshold, the flow sensor outputs a prompt to the controller, and the controller controls the power component to clean the filter membrane component.

[0014] In one feasible embodiment, in the sampling device provided in the embodiments of this application, the preset sensor includes a locator, and the corresponding preset parameters include the geographical location of the liquid to be tested.

[0015] In one feasible embodiment, the sampling device provided in this application further includes: an input module for receiving user instructions; a setting module for setting sampling parameters; a sampling module for sampling the liquid to be tested according to the user instructions and the sampling parameters; a storage module for storing preset parameters during the sampling process; a display module for displaying the preset parameters during the sampling process; an alarm module for monitoring the working status of the sampling device and outputting an alarm signal when the working status is abnormal; and a control module for controlling the above modules to operate.

[0016] Secondly, embodiments of this application also provide a sampling method applied to a sampling device. The sampling device includes a control component and a filtration component. The filtration component includes a filter membrane component and a fluid conduit. One end of the fluid conduit is connected to the filter membrane component, and the other end is connected to the control component. The sampling method includes: using the control component to perform a vacuum filtration operation on the liquid to be tested, so that the liquid to be tested flows through the filter membrane component, then flows into the control component through the fluid conduit, and flows out from the outlet of the control component; marking and storing the filter membrane component after the vacuum filtration operation to achieve sampling.

[0017] In one feasible embodiment, in the sampling method provided in this application, the control component includes a parameter acquisition unit and a power component. The power component is connected to the fluid pipeline. After the liquid to be tested flows through the filter membrane component, it flows into the parameter acquisition unit through the fluid pipeline, where the parameter acquisition unit acquires preset parameters of the liquid to be tested. The method further includes: determining the instantaneous flow rate of the liquid to be tested based on the preset parameters; when the instantaneous flow rate is less than a preset flow rate threshold, determining that the filter membrane component is clogged, and using the power component to rotate in the reverse direction to drive the liquid to be tested to flow in the reverse direction within the fluid pipeline to clean the filter membrane component; when the instantaneous flow rate is greater than or equal to the preset flow rate threshold, determining that the filter membrane component is not clogged, and using the power component to rotate in the forward direction to drive the liquid to be tested to flow out through the outlet of the control component.

[0018] In one feasible embodiment, in the sampling method provided in the embodiments of this application, before the control component is used to perform a filtration operation on the liquid to be tested, the method further includes: determining preset sampling parameters; and using the control component to perform a filtration operation on the liquid to be tested based on the sampling parameters.

[0019] In one feasible embodiment, the sampling method provided in this application further includes: monitoring the working status of the sampling device; and outputting a warning signal when the working status is abnormal.

[0020] The sampling device provided in this application includes a control component, a filtration component, and a support component. The filtration component includes a filter membrane and a fluid conduit, with the filter membrane detachably mounted to the support component. One end of the fluid conduit is connected to the filter membrane, and the other end is connected to the control component. The control component performs a filtration operation on the liquid to be tested, allowing the liquid to flow through the filter membrane, then through the fluid conduit into the control component, and finally out of the outlet of the control component, thus achieving sampling. By employing a filter membrane enrichment method, the above-mentioned sampling device avoids water sample contamination and low sampling efficiency caused by sample handling, thereby improving sampling efficiency and accuracy. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the sampling device provided in an embodiment of this application.

[0022] Figure 2 is a schematic diagram of the structure of the support component provided in an embodiment of this application.

[0023] Figure 3 is a schematic diagram of the structure of the control component provided in an embodiment of this application.

[0024] Figure 4 is a flowchart of the sampling method provided in an embodiment of this application.

[0025] Figure 5 is a flowchart illustrating the blocking determination method provided in an embodiment of this application.

[0026] Figure 6 is a schematic diagram of the sampling system provided in an embodiment of this application.

[0027] Figure 7 is a schematic diagram of the structure of the control component provided in an embodiment of this application.

[0028] Figure Labels

[0029] Sampling device 1

[0030] Support component 10

[0031] Filter connector 11

[0032] Telescopic component 12

[0033] Support frame 13

[0034] Fastener 14

[0035] Filter Component 20

[0036] Filter membrane component 21

[0037] Fluid pipe 22

[0038] Coarse filtration section 23

[0039] Control component 30

[0040] Parameter acquisition unit 31

[0041] Controller 32

[0042] Power component 33

[0043] Power supply component 34

[0044] Display Component 35

[0045] Communication Module 36

[0046] Memory 37

[0047] Input / output interface 38

[0048] Bus 39

[0049] Pipe adapter 40

[0050] Sampling System 2

[0051] Control Module 201

[0052] Input module 202

[0053] Setting Module 203

[0054] Storage module 204

[0055] Display module 205

[0056] Sampling module 206

[0057] Alarm module 207 Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0059] It should be noted that in this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and drawings of this application are used to distinguish similar objects, not to describe a specific order or sequence.

[0060] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0061] DNA sampling and analysis techniques in aquatic environments can determine the species and abundance in specific water bodies using non-invasive methods, which is of great significance for ecosystem protection and water resource utilization.

[0062] In related technologies, operators collect water samples using sampling equipment and transport them to a laboratory for filtration and analysis. However, the above methods suffer from low sampling efficiency and are prone to low accuracy of test results due to water sample contamination. Furthermore, existing sampling equipment is bulky and cannot automatically collect and record relevant parameters during the sampling process (e.g., atmospheric parameters, geographical location, sampling depth, etc.), which is not conducive to standardized sampling.

[0063] Therefore, it is necessary to provide a sampling device and sampling method that can improve the efficiency and accuracy of biological sample sampling and analysis in aquatic environments.

[0064] Figure 1 is a schematic diagram of the sampling device provided in an embodiment of this application. As shown in Figure 1, the sampling device 1 includes a support component 10, a filter component 20, and a control component 30. The support component 10 can be used to support the filter component 20 and the control component 30. The control component 30 is used to perform a filtration operation on the liquid to be tested, so that the liquid to be tested flows through the filter component 20 and then flows out. The filter component 20 filters the liquid to be tested and collects biological samples from the liquid to be tested. The biological samples may include DNA from the aquatic environment.

[0065] In some embodiments, the filtration assembly 20 includes a filter membrane component 21 and a fluid conduit 22. The filter membrane component 21 is used to collect DNA from the test liquid environment. The filter membrane component 21 is detachably mounted to the support assembly 10. After sampling, the filter membrane component 21 can be detached from the support assembly 10, and the biological sample collected in the filter membrane component 21 can be analyzed. One end of the fluid conduit 22 is connected to the filter membrane component 21, and the other end is connected to the control assembly 30. The control assembly 30 performs a filtration operation on the test liquid, so that after the test liquid flows through the filter membrane component 21, it flows into the control assembly 30 through the fluid conduit 22 and flows out from the outlet of the control assembly 30, thereby achieving the sampling of DNA from the test liquid environment.

[0066] In some embodiments, the filter assembly 20 further includes a coarse filter section 23, which is installed at the inlet of the filter membrane component 21 and is used to coarsely filter the liquid to be tested entering the filter membrane component 21, for example, to filter out sediment, construction waste, plastic, leaves and other particles in the liquid to be tested, so as to prevent large particles in the liquid to be tested from clogging the filter membrane component 21.

[0067] In some embodiments, the filter membrane component 21 includes a filter membrane (not shown) and a filter membrane storage section (not shown). The filter membrane is stored in the filter membrane storage section. The filter membrane allows the test liquid to pass through and collects biological samples, such as DNA from the environment. Each filter membrane component 21 may contain one or more filter membranes. When the test liquid flows through the filter membrane, the filter membrane collects DNA from the test liquid environment. The filter membrane is then labeled and stored. This embodiment of the application collects DNA from the test liquid environment through filter membrane enrichment, which avoids the problems of water sample contamination and low sampling efficiency caused by water sample transportation, thus improving sampling efficiency and accuracy.

[0068] Please refer to Figures 1 and 2 together. Figure 2 is a structural schematic diagram of the support assembly provided in this embodiment. As shown in Figure 2, the support assembly 10 includes a filter connector 11, a telescopic component 12, and a support frame 13. The filter connector 11 is connected to the telescopic component 12. For example, the filter connector 11 is installed at the end of the telescopic component 12, and the telescopic component 12 is installed on the support frame 13. The filter connector 11 is used to load at least one filter membrane component 21, the telescopic component 12 is used to load the fluid pipe 22 and the control component 30, and the support frame 13 is used to fix the telescopic component 12. In this embodiment, the filter membrane component 21 is connected to the filter connector 11. Since the filter connector 11 is installed at the end of the telescopic component 12, the filter membrane component 21 is also installed at the end of the telescopic component 12. During sampling, the liquid to be tested first flows through the filter membrane component 21, then through the fluid pipe 22 to the control component 30. After monitoring the liquid to be tested, the liquid is discharged through the outlet of the control component 30. By installing the filter membrane component 21 at the front end of the sampling device 1, the above-mentioned sampling device 1 can effectively avoid the problem of cross-contamination of samples caused by multiple sampling tests, thereby improving the accuracy of sampling. In addition, by setting an adjustable telescopic component 12, the length of the telescopic component 12 can be adjusted according to actual sampling needs, realizing DNA sampling and analysis in the aquatic environment at different locations, thus improving the flexibility of sampling.

[0069] In some embodiments, the telescopic component 12 and the support frame 13 can be selectively used according to actual needs. For example, the support component may include the filter connector 11 and the telescopic component 12, but not the support frame 13. Alternatively, the support component may include the filter connector 11, the telescopic component 12, and the support frame 13. Or, the support component may include the filter connector 11, but not the telescopic component 12 and the support frame 13. For example, when the support component only includes the filter connector 11, in a scenario where water samples are collected from a vessel, after the vessel arrives at the sampling location, the operator places the filter membrane component 21 into the water sample and uses the sampling device 1 to sample DNA from the aquatic environment. As another example, when the support component includes the filter connector 11 and the telescopic component 12, but not the support frame 13, in a scenario where water samples are collected from the shore, the operator adjusts the telescopic length of the telescopic component 12 to place the filter membrane component 21 at the water sample sampling location and uses the sampling device 1 to sample DNA from the aquatic environment. For example, when the support assembly 10 includes a filter connector 11, a telescopic component 12 and a support frame 13, in the scenario of collecting water samples on the shore, the operator can complete the support frame 13, adjust the telescopic length of the telescopic component 12, place the filter membrane component 21 at the water sample sampling position and leave the sampling site, and the sampling device 1 can automatically collect DNA samples from the aquatic environment in an unmanned state.

[0070] In some embodiments, the filter connector 11 may also be equipped with a pipe diameter converter (not shown in FIG. 1) for adapting filter membrane components 21 with different pore sizes. In some embodiments, the filter connector 11 may be a single-plug filter connector or a multi-plug filter connector. When the filter connector 11 is a single-plug filter connector, it can load one filter membrane component 21; when the filter connector 11 is a multi-plug filter connector, it can load multiple filter membrane components 21. The number of filter membrane components 21 can be 2, 3, 4, etc. In this embodiment, the filter connector 11 is a multi-plug filter connector and the multi-plug filter connector is a three-plug filter connector, used to load three filter membrane components 21. By using the filter connector 11 to connect at least one filter membrane component 21, this embodiment can realize single-group sampling and multi-group synchronous sampling, improving sampling efficiency.

[0071] In some embodiments, when the filter connector 11 is a multi-plug filter connector, the sampling device 1 may further include a pipe adapter 40. The pipe adapter 40 is used to connect the fluid pipes 22 of the filter connector 11 corresponding to multiple filter membrane components 21, and convert the multiple fluid pipes 22 into a unified fluid pipe 22. For example, when the multi-plug filter connector is a three-plug filter connector, the three-plug filter connector carries three filter membrane components 21, each of which has a corresponding fluid pipe 22, i.e., there are three fluid pipes 22. The pipe adapter 40 can unify the three fluid pipes 22 into a single fluid pipe 22, and collect the test liquid flowing through each filter membrane component 21 into the control component 30 for relevant monitoring. In other embodiments, when the filter connector 11 is a multi-plug filter connector, the multi-plug filter connector is equipped with multiple filter membrane components 21, and each filter membrane component 21 has a corresponding fluid channel 22, so that the test liquid flowing through each filter membrane component 21 can be transferred to the control component 30 for relevant monitoring through its respective fluid channel.

[0072] In some embodiments, the telescopic component 12 and the support frame 13 can be made of a high-hardness, low-density material, for example, carbon fiber. By selecting a high-hardness, low-density material for the telescopic component 12 and the support frame 13, the sampling device 1 can be made lighter and more portable.

[0073] In some embodiments, the support assembly 10 further includes a fastener 14, which may be one or more. The fastener 14 is mounted on the telescopic member 12, and the fluid conduit 22 is mounted on the telescopic member 12 through the fastener 14. For example, the fluid conduit 22 passes through the fastener 14, so that the fastener 14 fixes the fluid conduit 22.

[0074] Figure 3 is a schematic diagram of the control component provided in an embodiment of this application. As shown in Figure 3, the control component 30 includes a parameter acquisition unit 31, a controller 32 (shown in Figure 7), a power unit 33, and a power supply unit 34. The controller 32 is connected to the parameter acquisition unit 31, the power unit 33, and the power supply unit 34. The parameter acquisition unit 31 receives acquisition commands from the controller 32, acquires preset parameters of the liquid to be tested based on the acquisition commands, and transmits the preset parameters to the controller 32. The acquisition commands instruct the parameter acquisition unit 31 to activate and acquire the preset parameters. The controller 32 sends preset commands to the power unit 33 according to the preset parameters. The power unit 33 performs a filtration operation on the liquid to be tested or a cleaning operation on the filter membrane component 21 according to the preset commands. The preset commands may include filtration commands and cleaning commands. The filtration command is used to perform a filtration operation on the liquid to be tested, and the cleaning command is used to clean the filter membrane component 21. The power supply unit 34 provides power to the controller 32 and the power unit 33, enabling them to operate normally. In some embodiments, the controller 32 is used to perform a filtration operation on the liquid to be tested. For example, the controller 32 sends a filtration command to the power unit 33, and the power unit 33 performs a filtration operation on the liquid to be tested through the fluid pipe 22. This causes the liquid to be tested to flow through the filter membrane component 21 and then through the fluid pipe 22 into the parameter acquisition unit 31. The parameter acquisition unit 31 collects the liquid to be tested according to preset parameters and then discharges the liquid to be tested through the outlet of the control component 30, thereby achieving sampling.

[0075] In some embodiments, the parameter acquisition unit 31 is used to acquire parameters of the liquid to be tested flowing in through the fluid pipe 22. The parameter acquisition unit 31 may include multiple preset sensors, which are used to acquire preset parameters of the liquid to be tested. Exemplarily, the preset sensors may include, but are not limited to, flow sensors, velocity sensors, locators, atmospheric temperature sensors, atmospheric pressure sensors, temperature sensors, and timers, etc., and the corresponding preset parameters may include, but are not limited to, instantaneous flow rate, flow velocity, sampling location, atmospheric temperature, atmospheric pressure, temperature of the liquid to be tested, and sampling time, etc. Among them, the flow sensor is used to acquire the instantaneous flow rate of the liquid to be tested; the velocity sensor is used to acquire the flow velocity of the liquid to be tested; the locator may be a sensor using positioning methods such as Global Positioning System (GPS), Beidou system positioning, or Real-time kinematic (RTK) positioning, and the locator is used to determine the sampling location of the sampling device 1 (i.e., the geographical location of the liquid to be tested); the atmospheric temperature sensor is used to determine the atmospheric temperature at the sampling location; the atmospheric pressure sensor is used to determine the atmospheric pressure at the sampling location; the temperature sensor is used to determine the temperature of the liquid to be tested; and the timer is used to determine the sampling time. This application embodiment facilitates standardized sampling by setting a parameter acquisition unit 31 within the sampling device 1 and automatically determining preset parameters for DNA sampling in the aquatic environment using the parameter acquisition unit 31. For example, this application facilitates sample reproduction by setting a locator within the sampling device 1; it enables comparison of the impact of different environments on biological activities by setting an atmospheric temperature sensor, an atmospheric pressure sensor, and a temperature sensor within the sampling device 1; it enables control of sampling speed and sampling volume by setting a flow sensor and a flow velocity sensor within the sampling device 1; and it enables timed sampling by setting a timer within the sampling device 1.

[0076] In some embodiments, the locator is connected to the controller 32 and is used to locate the geographical location of the liquid to be tested. When the geographical location is a preset location, the controller 32 performs a filtration operation on the liquid to be tested. In some embodiments, for DNA sampling in aquatic environments with unpredictable locations, such as when collecting water samples from multiple locations on a ship, it is necessary to use a locator to monitor the geographical location of the liquid to be tested. Based on the matching of this geographical location with a preset location, it is determined whether the timing for water sample collection has been reached. The preset location is a pre-set sampling location. This embodiment of the application monitors the geographical location of the liquid to be tested by a locator and matches this geographical location with a preset location, which can accurately control the timing of water sample collection in unpredictable water sample collection experiments and improve the accuracy of sampling.

[0077] In some embodiments, the power component 33 is connected to the controller 32 and the fluid pipeline 22 respectively. The power component 33 is used to respond to a preset command output by the controller 32, determine the rotation direction, and drive the flow direction of the liquid to be tested within the fluid pipeline 22. In some embodiments, the power component 33 may include a peristaltic pump, centrifugal pump, axial flow pump, or other power equipment used for filtration of the liquid to be tested. The rotation direction of the power component 33 may include forward rotation and reverse rotation. When rotating forward, the flow direction of the liquid to be tested within the fluid pipeline 22 is opposite to that when rotating reverse. The rotation direction of the power component 33 may be determined according to a preset command from the controller 32. In some embodiments, the preset command may include a filtration command and a cleaning command. The filtration command may be used to instruct the power component 33 to rotate forward to filter the liquid to be tested; the cleaning command may be used to instruct the power component 33 to rotate in reverse to clean the filter membrane component 21.

[0078] In some embodiments, the controller 32 can output a filtration command to the power unit 33 at specified time intervals, causing the power unit 33 to drive the test liquid to flow in reverse within the fluid pipe 22 based on a preset command, thereby cleaning the filter membrane component 21 and preventing the filter membrane component 21 from becoming clogged and affecting DNA sampling in the aquatic environment. The specified time interval can be set according to actual needs and is not limited here. In another embodiment, when the instantaneous flow rate is less than a preset flow rate threshold, the power unit 33 drives the test liquid to flow in reverse within the fluid pipe 22 by reverse rotation, cleaning the filter membrane component 21. In some embodiments, after the flow sensor detects the instantaneous flow rate of the test liquid, it sends the instantaneous flow rate to the controller 32. The controller 32 determines whether the filter membrane component 21 is clogged based on the instantaneous flow rate and the preset flow rate threshold, and outputs a preset command to the power unit 33 based on the clogged condition, causing the power unit 33 to drive the movement direction of the test liquid within the fluid pipe 22 based on the preset command. In other embodiments, when the flow sensor detects that the instantaneous flow rate of the liquid to be tested is less than a preset flow rate threshold, it outputs a prompt to the controller 32. The controller 32 then determines whether the filter membrane component 21 is blocked based on this prompt and outputs a preset command to the power unit 33 based on the blockage status. This command causes the power unit 33 to drive the liquid to be tested in the fluid pipe 22 according to the preset command. The preset flow rate threshold can be set according to actual needs. When the instantaneous flow rate is greater than or equal to the preset flow rate threshold, it is determined that the filter membrane component 21 is not blocked, and the controller 32 outputs a filtration command to the power unit 33. When the instantaneous flow rate is less than the preset flow rate threshold, it is determined that the filter membrane component 21 is blocked, and the controller 32 outputs a cleaning command to the power unit 33. In some embodiments, when the instantaneous flow rate is equal to the preset flow rate threshold, the power unit 33 rotates forward to drive the liquid to be tested to flow forward in the fluid pipe 22. When the instantaneous flow rate is greater than the preset flow rate threshold, the power unit 33 rotates forward and its power is reduced to drive the liquid to be tested to flow forward in the fluid pipe 22. The power of the power component 33 can be reduced before or during its forward rotation; this is not a limitation. This embodiment monitors the instantaneous flow rate of the liquid to be tested using a flow sensor and determines whether the filter membrane component 21 is blocked based on the instantaneous flow rate and a preset flow rate threshold. If the filter membrane component 21 is blocked, the liquid to be tested is driven to flow in reverse within the fluid pipe 22 by reverse rotation to clean the filter membrane component 21, thus preventing the blockage from affecting DNA sampling in the aquatic environment. Furthermore, by monitoring the instantaneous flow rate and a preset flow rate threshold, this application determines the power of the power component, ensuring that the sample volume and flow rate of the liquid to be tested can be collected according to preset sampling requirements, improving the accuracy of the sampling.

[0079] In some embodiments, the power supply unit 34 can support power cord or USB charging. To avoid the problem of charging waiting due to insufficient power of the power supply unit 34 during water sample collection, the power supply unit 34 can be detachably installed in the control component 30. When the power supply unit 34 is low on power, it can be detached in time and replaced with a power supply unit 34 with sufficient power.

[0080] In some embodiments, the power supply unit 34 is connected to the controller 32. The power supply unit 34 can send remaining power information to the controller 32 in real time, at preset time intervals, or when a preset trigger condition is met. The remaining power information may include the current remaining power of the power supply unit 34 and the remaining time available for the sampling device 1 to sample normally. The preset time interval can be set according to actual needs, for example, it can be 10 minutes, 15 minutes, 20 minutes, etc. The preset trigger condition may be that the current remaining power of the power supply unit 34 is lower than a preset power threshold. The preset power threshold can be set according to actual needs, for example, it can be 20%, 30%, 40%, etc. In some embodiments, after receiving the remaining power information, the controller 32 can output a prompt to charge or replace the power supply unit 34 in a timely manner, enabling the sampling device 1 to sample normally.

[0081] In some embodiments, the control component 30 further includes a display 35, which is used to display relevant data during the DNA sampling and analysis process in the aquatic environment. For example, the display 35 can display preset parameters monitored by the parameter acquisition unit 31, or it can display the device status and sampling progress of the sampling device 1. The device status may include, but is not limited to, battery information and storage information. In some embodiments, the display 35 is also used to support data input. For example, the display 35 supports button input, and a keyboard can be accessed within the display page to prevent liquid from covering the screen of the display 35 and affecting user operation. In other embodiments, the display 35 can also support voice input, action (e.g., gesture) input, etc., without limitation. Users can input relevant sampling information in the display 35, such as sampling location, sampling depth, sampling duration, etc. By setting the display 35, the users can intuitively understand the working status and sampling results of the sampling device 1, and control the sampling device 1 to perform sampling processing according to the set sampling information.

[0082] The sampling device provided in this application includes a control component, a filtration component, and a support component. The filtration component comprises a filter membrane and a fluid conduit. The filter membrane is detachably mounted to the support component. One end of the fluid conduit is connected to the filter membrane, and the other end is connected to the control component. The control component performs a filtration operation on the liquid to be tested, causing the liquid to flow through the filter membrane, then through the fluid conduit into the control component, and finally out of the outlet of the control component, thus achieving sampling. This sampling device, through the enrichment method using the filter membrane, avoids water sample contamination and low sampling efficiency caused by sample handling, thereby improving sampling efficiency and accuracy.

[0083] To more clearly illustrate the sampling method provided in the embodiments of this application, the technical solution of this application will be described in detail below through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0084] Figure 4 shows a flowchart of the sampling method provided in an embodiment of this application. Depending on different needs, the order of the steps in this flowchart can be adjusted according to actual requirements, and some steps can be omitted. The method is applied to a sampling device.

[0085] S11, the control component is used to perform a filtration operation on the liquid to be tested, so that after the liquid to be tested flows through the filter membrane component, it flows into the control component through the fluid pipe and flows out from the outlet of the control component.

[0086] In at least one embodiment of this application, when the control component performs a filtration operation on the liquid to be tested, the controller within the control component sends a filtration command to the power component. The power component then performs the filtration operation based on the filtration command, causing the liquid to flow through the filter membrane component and into the parameter acquisition unit of the control component via a fluid pipe. The parameter acquisition unit collects data on the liquid according to preset parameters and then discharges the liquid through the outlet of the control component. The preset parameters may include, but are not limited to, instantaneous flow rate, sampling location, atmospheric temperature, atmospheric pressure, and the temperature of the liquid to be tested.

[0087] In some embodiments, before performing a filtration operation on the liquid to be tested using the control component, the method further includes: determining the filter membrane type corresponding to the filter membrane component; and determining the filtration frequency of the power component according to a preset mapping relationship between filter membrane type and filtration frequency. Then, the control component performs a filtration operation on the liquid to be tested according to the determined filtration frequency. Different filter membrane types have corresponding pressure tolerances, and different pressure tolerances should be set with corresponding filtration frequencies to avoid filter membrane damage due to excessive filtration frequency.

[0088] In some embodiments, the sampling device includes sampling parameters, which may include, but are not limited to, sampling time, filtration frequency, sampling depth, sampling volume, sampling speed, and sampling location. Before performing the filtration operation on the liquid to be tested using the control component, the method further includes: determining preset sampling parameters; and performing the filtration operation on the liquid to be tested using the control component based on the sampling parameters. This application achieves sampling based on sampling parameters, making the sampling process meet user needs and improving sampling accuracy.

[0089] S12 marks and stores the filter membrane component after the filtration operation to achieve sampling.

[0090] In at least one embodiment of this application, preset parameters corresponding to the filter membrane component after the filtration operation are obtained, a preset mark corresponding to the filter membrane component is determined based on the preset parameters, the preset mark is added to the filter membrane of the filter membrane component, and then the marked filter membrane is stored according to preset storage conditions. The preset mark can be set according to actual needs; for example, the preset mark can be in the form of a QR code or barcode. The preset storage conditions can be set according to actual needs; for example, the preset storage conditions can be low temperature, sealed conditions, etc.

[0091] In some embodiments, the method further includes: monitoring the operating status of the sampling device throughout the sampling process; and outputting an alarm signal when the operating status is abnormal. The operating status can be set according to actual needs. For example, the operating status may include the remaining power of the sampling device, and the corresponding abnormal status may include the remaining power of the sampling device being lower than a preset power threshold; or the operating status may include the storage capacity of the sampling device, and the corresponding abnormal status may include the storage capacity being greater than a preset capacity threshold; or the operating status may also include the usage status of the parameter acquisition unit in the sampling device, and the corresponding abnormal status may include a malfunction in the parameter acquisition unit, such as inability to collect data. The preset power threshold and preset capacity threshold can be set according to actual needs and are not limited here. This embodiment of the application, by monitoring the operating status of the sampling device, can promptly issue an alarm when the sampling device malfunctions, avoiding impact on the sampling process.

[0092] The sampling method provided in this application utilizes the control component to perform a filtration operation on the liquid to be tested. The liquid flows through the filter membrane component, then through the fluid pipe into the control component, and exits from the outlet of the control component. The filter membrane component after the filtration operation is marked and stored, thus achieving sampling. This sampling method, through the enrichment of the filter membrane component, avoids the problems of water sample contamination and low sampling efficiency caused by water sample transportation, thereby improving sampling efficiency and accuracy.

[0093] In at least one embodiment of this application, the liquid to be tested may become clogged after flowing through the filter membrane component. To avoid the impact of filter membrane component clogging on sampling and analysis, the presence or absence of clogging can be determined based on preset parameters of the liquid to be tested collected by the parameter acquisition component. Figure 5 is a flowchart illustrating the clogging determination method provided in an embodiment of this application. The clogging determination method is applied to a sampling device. As shown in Figure 5, the method includes the following steps:

[0094] S21, determine the instantaneous flow rate of the liquid to be tested according to the preset parameters.

[0095] In at least one embodiment of this application, the parameter acquisition unit may include a flow sensor, a locator, an atmospheric temperature sensor, an atmospheric pressure sensor, and a temperature sensor, etc., and the corresponding preset parameters may include instantaneous flow rate, sampling location, atmospheric temperature, atmospheric pressure, and the temperature of the liquid to be measured, etc. The instantaneous flow rate of the liquid to be measured is determined from multiple preset parameters.

[0096] S22, when the instantaneous flow rate is less than the preset flow rate threshold, it is determined that the filter membrane component is blocked. The power component is used to rotate in the opposite direction to drive the liquid to be tested to flow in the opposite direction in the fluid pipeline to clean the filter membrane component.

[0097] In at least one embodiment of this application, a preset flow rate threshold can be set according to actual needs. When the instantaneous flow rate is less than the preset flow rate threshold, it is determined that the filter membrane component is clogged, and the controller outputs a cleaning command to the power unit. The power unit determines the rotation direction to be reverse rotation according to the cleaning command, driving the liquid to be tested to flow in reverse within the fluid pipeline to clean the filter membrane component.

[0098] S23, when the instantaneous flow rate is greater than or equal to the preset flow rate threshold, it is determined that the filter membrane component is not clogged, and the power component is used to rotate in the forward direction to drive the liquid to be tested to be discharged through the outlet of the control component.

[0099] In at least one embodiment of this application, when the instantaneous flow rate is greater than or equal to the preset flow rate threshold, it is determined that the filter membrane component is not clogged, and the controller outputs a filtration command to the power unit. The power unit determines its rotation direction to be forward based on the filtration command, driving the liquid to be tested to flow forward within the fluid pipeline, thereby performing a filtration operation on the filter membrane component.

[0100] In some embodiments, when the instantaneous flow rate is greater than or equal to the preset flow rate threshold, rotating the power component in the forward direction may include: when the instantaneous flow rate is equal to the preset flow rate threshold, rotating the power component in the forward direction to drive the liquid to be tested to flow forward within the fluid pipe; when the instantaneous flow rate is greater than the preset flow rate threshold, rotating the power component in the forward direction while reducing the power of the power component to drive the liquid to be tested to flow forward within the fluid pipe. The power of the power component may be reduced before or during the forward rotation process; this is not limited to this method.

[0101] In some embodiments, reducing the power of the power unit includes: determining the flow difference between the instantaneous flow rate and the preset flow rate threshold; determining the power corresponding to the power unit based on a preset correspondence between the flow difference and power; and reducing the current power of the power unit to the determined power. This application determines the power of the power unit by monitoring the instantaneous flow rate and the preset flow rate threshold, enabling the sample volume and flow rate of the liquid to be tested to be collected according to preset sampling requirements, thereby improving the accuracy of the collection. The sampling method provided in this application embodiment monitors the instantaneous flow rate of the liquid to be tested using a flow sensor, determines whether there is blockage in the filter membrane component based on the instantaneous flow rate and the preset flow rate threshold, and, when there is blockage in the filter membrane component, cleans the filter membrane component by driving the liquid to be tested to flow in reverse within the fluid pipe through reverse rotation, thus avoiding the impact of filter membrane component blockage on DNA sampling in the aquatic environment.

[0102] Figure 6 is a schematic diagram of the sampling system provided in an embodiment of this application. As shown in Figure 6, the sampling system 2 may include multiple functional modules composed of computer program segments. The computer programs of each program segment in the sampling system 2 may be stored in the memory of the sampling device 1 and executed by the controller to perform the sampling function.

[0103] In some embodiments, the sampling system 2 can be divided into multiple functional modules according to the functions it performs.

[0104] The functional modules may include: a control module 201, an input module 202, a setting module 203, a sampling module 204, a storage module 205, a display module 206, and an alarm module 207.

[0105] The control module 201 is responsible for controlling and coordinating the work of various functional modules in the sampling system 2. For example, the control module 201 is used to receive user instructions transmitted by the input module 202, and according to the relevant sampling parameters set in the setting module 203, control the sampling module 204 to perform sampling operations, control the data recording of the storage module 205, control the parameter display of the display module 206, and control the abnormal prompts of the alarm module 207.

[0106] The input module 202 is used to provide an interface for interaction with the user, receive user instructions, and transmit user instructions to the control module 201. The user instructions may include sampling start instructions, sampling interrupt instructions, and sampling stop instructions. The sampling start instruction is used to instruct the sampling device 1 to start sampling the liquid to be tested, the sampling interrupt instruction is used to instruct the sampling device 1 to pause sampling the liquid to be tested, and the sampling stop instruction is used to instruct the sampling device 1 to stop sampling the liquid to be tested.

[0107] The setting module 203 is used to pre-set and adjust the relevant sampling parameters of the sampling device 1 during the sampling process. For example, the sampling parameters may include, but are not limited to, information such as sampling time, filtration frequency, sampling depth, sampling volume, sampling speed, and sampling position.

[0108] The sampling module 204 is used to sample the liquid to be tested according to the user instructions and sampling parameters output by the control module 201. For example, when the control module 201 outputs a sampling start instruction, the sampling module 204 can start sampling the liquid to be tested by the sampling device 1 according to the sampling start instruction and sampling parameters; as another example, when the control module 201 outputs a sampling interruption instruction, the sampling module 204 can control the sampling device 1 to stop sampling the liquid to be tested according to the sampling interruption instruction and sampling parameters; as yet another example, when the control module 201 outputs a sampling stop instruction, the sampling module 204 can control the sampling device 1 to stop sampling the liquid to be tested according to the sampling stop instruction and sampling parameters.

[0109] The storage module 205 is used to record and store relevant data during the sampling process, which facilitates subsequent data processing and analysis. The relevant data may include preset parameters, such as instantaneous flow rate, flow velocity, sampling location, atmospheric temperature, atmospheric pressure, temperature of the liquid to be tested, and sampling time.

[0110] The display module 206 is used to display information such as preset parameters monitored by the parameter acquisition unit 31, working status of the sampling device 1, and sampling progress. The preset parameters may include instantaneous flow rate, flow velocity, sampling location, atmospheric temperature, atmospheric pressure, temperature of the liquid to be tested, and sampling time. The working status may include, but is not limited to, power information and storage information.

[0111] The alarm module 207 is used to monitor the working status of the sampling device 1 and output an alarm signal when the working status is abnormal. For example, the working status of the sampling device 1 is abnormal when the remaining power of the sampling device 1 is lower than the preset power threshold, the storage capacity of the sampling device 1 is greater than the preset capacity threshold, or there is an abnormality in the parameter acquisition unit 31.

[0112] In some embodiments, the display interface corresponding to the display module 206 may include a task mode interface, a real-time task interface, a global settings interface, a history interface, and a fault management interface.

[0113] In some embodiments, the task mode interface provides task templates to facilitate quick task creation for users. For example, the task mode interface provides a task list displaying currently created task modes. Users can manage and monitor the sampled modes by viewing key information such as the task mode's name, description, sampling method, and sampling quantity. The task mode interface allows users to create, edit, and delete content via touch, voice, or other methods. For instance, when creating a new task mode on the task mode interface, users can click the "Add" button to configure it. Users can assign a unique name and detailed description to any task mode to better identify and understand the task's purpose.

[0114] In some embodiments, the real-time task interface is used to display the collected real-time data. For example, the real-time task interface can display real-time preset parameters, such as instantaneous flow rate, flow velocity, sampling location, atmospheric temperature, atmospheric pressure, temperature of the liquid being tested, and sampling time. The display method can be text, images, or a combination of text and images, etc., and there are no restrictions on this.

[0115] In some embodiments, the global settings interface can set multiple sets of parameters. For example, the global settings interface can set threshold parameters and device information. For example, threshold parameters may include preset flow thresholds, and device information may include device battery level, device storage information, etc.

[0116] In some embodiments, the history interface is used to view and manage historical sampling tasks and related data, facilitating user retrieval of historical sampling information. For example, the history interface may include a task list displaying summary information of completed sampling tasks. This summary information may include key information such as task name, start time, end time, and status. Users can browse the task list by scrolling or paginating, and can quickly locate specific historical sampling tasks using search and filtering functions. For instance, when a user selects a specific historical sampling task, the history interface will display detailed information and related data for that task, such as task description, settings parameters, task execution status, and sampling data. In some embodiments, users can also mark tasks in the task list within the history interface, for example, marking them as "important tasks" or "archived tasks" for better management of the history.

[0117] In some embodiments, the fault management interface is used to record fault information during the sampling process. The interface includes a fault list, which displays summary information of the faults that have occurred. This summary information may include key information such as fault type, fault occurrence time, resolution status, and fault description. Users can browse the fault list by scrolling or paginating, and can use search and filtering functions to quickly locate specific faults. For example, when a user selects a specific fault in the fault list, the fault management interface displays detailed information and processing records for that fault, such as the fault description, fault cause analysis, fault solution, and fault processing time. Users can further view event records and related logs during the fault period to gain a more comprehensive understanding of the fault's occurrence and handling process. In some embodiments, users can also mark faults in the fault list within the fault management interface, for example, marking them as "resolved," "pending processing," or "closed" to better manage the fault status. In some embodiments, the fault management interface also provides a fault base library, which stores information such as fault codes, fault names, and fault levels to assist users in quickly locating faults during fault handling, and provides alarm reminders based on different fault levels.

[0118] The module division described above is a logical functional division, and other division methods may be used in actual implementation. Furthermore, the functional modules in the various embodiments of this application can be integrated into the same processing unit, or each module can exist physically separately, or two or more modules can be integrated into the same unit. The integrated modules described above can be implemented in hardware or in a combination of hardware and software functional modules.

[0119] Figure 7 is a schematic diagram of the control component provided in an embodiment of this application. As shown in Figure 7, the control component may further include a controller 32, a communication module 36, a memory 37, an input / output (I / O) interface 38, and a bus 39. The controller 32 is coupled to the parameter sampling unit 31, the power unit 33, the power supply unit 34, the display unit 35, the communication module 36, the memory 37, and the input / output interface 38 via the bus 39.

[0120] Communication module 36 may include a wired communication module and / or a wireless communication module. The wired communication module may provide one or more wired communication solutions such as Universal Serial Bus (USB) and Controller Area Network (CAN). The wireless communication module may provide one or more wireless communication solutions such as Wireless Fidelity (Wi-Fi), Bluetooth (BT), mobile communication networks, frequency modulation (FM), near field communication (NFC), and infrared (IR).

[0121] Memory 37 may include one or more random access memory (RAM) and one or more non-volatile memory (NVM). The RAM can be directly read and written by the controller and can be used to store executable programs (e.g., machine instructions) of other running programs, as well as user and application data. The RAM may include static random-access memory (SRAM), dynamic random-access memory (DRAM), synchronous dynamic random-access memory (SDRAM), double data rate synchronous dynamic random-access memory (DDR SDRAM), etc.

[0122] Non-volatile memory can also store executable programs and user and application data, and can be pre-loaded into random access memory for direct read and write operations by the controller. Non-volatile memory can include disk storage devices and flash memory.

[0123] Memory 37 is used to store one or more computer programs. The one or more computer programs are configured to be executed by the controller. The one or more computer programs include multiple instructions that, when executed by the controller, implement a sampling method on sampling device 1.

[0124] In other embodiments, the control component shown in FIG7 further includes an external memory interface for connecting to an external memory to expand the storage capacity of the control component.

[0125] Controller 32 may include one or more processing units, such as: application processor (AP), modem controller, graphics processing unit (GPU), image signal processor (ISP), controller, video codec, digital signal processor (DSP), and / or neural network processing unit (NPU), etc. The different processing units may be independent devices or integrated into one or more controllers.

[0126] The controller 32 provides computing and control capabilities; for example, the controller 32 is used to execute a computer program stored in the memory 37 to implement the sampling method described above.

[0127] The input / output interface 38 is used to provide a channel for user input or output. For example, the input / output interface 38 can be used to connect various input / output devices, such as a mouse, keyboard, touch device, display screen, etc., so that users can enter information or visualize information.

[0128] Bus 39 is used at least to provide a channel for communication between the communication module 36, memory 37, controller, and input / output interface 38 in the control component.

[0129] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the control component. In other embodiments of this application, the control component may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0130] This application also provides a computer-readable storage medium storing a computer program, which includes program instructions. When the program instructions are executed, the method implemented can refer to the methods in the above embodiments of this application.

[0131] The computer-readable storage medium can be the internal memory of the control component described in the above embodiments, such as the hard disk or memory of the control component. Alternatively, the computer-readable storage medium can be an external storage device for the control component, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., mounted on the control component.

[0132] In some embodiments, a computer-readable storage medium may include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function, etc.; and the stored data area may store data created based on the use of a self-moving device or a sampling device, etc.

[0133] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0134] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0135] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A sampling device, characterized in that, The sampling device includes a control component, a filtering component, and a support component; wherein, the filtering component includes: A filter membrane component, which is detachably mounted to the support assembly; A fluid conduit, one end of which is connected to the filter membrane component, and the other end of which is connected to the control component; The control component is used to perform a filtration operation on the liquid to be tested, so that after the liquid to be tested flows through the filter membrane component, it flows into the control component through the fluid pipe and flows out from the outlet of the control component, thereby achieving sampling.

2. The sampling device of claim 1, wherein, The support assembly includes a filter connector and a telescopic component. The filter connector is connected to the telescopic component. The filter connector is used to load at least one of the filter membrane components. The fluid conduit is loaded onto the telescopic component.

3. The sampling device of claim 1, wherein, The filtration assembly further includes a coarse filtration section, which is installed at the inlet of the filter membrane component and is used to coarsely filter the liquid to be tested that enters the filter membrane component.

4. The sampling device of claim 1, wherein, The filter membrane component includes a filter membrane and a filter membrane storage section. The filter membrane is stored in the filter membrane storage section and allows the liquid to be tested to pass through and collect biological samples therein.

5. The sampling device of claim 1, wherein, The control component includes a power unit and a controller. The power unit is connected to the controller and the fluid pipeline respectively. The power unit is used to respond to the preset command output by the controller, determine the rotation direction, and drive the flow direction of the liquid to be tested in the fluid pipeline.

6. The sampling device of claim 5, wherein, The control component also includes a parameter acquisition unit, which is used to acquire parameters of the liquid to be tested flowing in through the fluid pipe.

7. The sampling device of claim 6, wherein, The parameter acquisition unit includes multiple preset sensors, which are used to acquire preset parameters of the liquid to be tested.

8. The sampling device of claim 7, wherein, The preset sensor includes a flow sensor, and the corresponding preset parameters include instantaneous flow rate. The flow sensor is connected to the controller. When the instantaneous flow rate is less than the preset flow rate threshold, the flow sensor outputs a prompt to the controller, which then controls the power component to clean the filter membrane component.

9. The sampling device of claim 7, wherein, The preset sensor includes a locator, and the corresponding preset parameters include the geographical location of the liquid to be tested.

10. The sampling device of claim 1, wherein, The sampling device also includes: The input module is used to receive user commands; The configuration module is used to set the sampling parameters; The sampling module is used to sample the liquid to be tested according to the user instructions and the sampling parameters; The storage module is used to store preset parameters during the sampling process; The display module is used to display the preset parameters during the sampling process; An alarm module is used to monitor the working status of the sampling device and output an alarm signal when the working status is abnormal. The control module is used to control the operation of the above modules.

11. A sampling method applied to a sampling device, characterized in that, The sampling device includes a control component and a filtration component. The filtration component includes a filter membrane and a fluid conduit. One end of the fluid conduit is connected to the filter membrane and the other end is connected to the control component. The sampling method includes: The control component is used to perform a filtration operation on the liquid to be tested, so that the liquid to be tested flows through the filter membrane component, flows into the control component through the fluid pipe, and flows out from the outlet of the control component; The filter membrane components after the filtration operation are marked and stored to achieve sampling.

12. The sampling method of claim 11, wherein, The control component includes a parameter acquisition unit and a power unit. The power unit is connected to the fluid pipeline. After the liquid to be tested flows through the filter membrane component, it flows into the parameter acquisition unit through the fluid pipeline, where the parameter acquisition unit acquires preset parameters of the liquid to be tested. The method further includes: The instantaneous flow rate of the liquid to be tested is determined according to the preset parameters; When the instantaneous flow rate is less than a preset flow rate threshold, it is determined that the filter membrane component is blocked. The power component is used to rotate in the opposite direction to drive the liquid to be tested to flow in the opposite direction in the fluid pipeline to clean the filter membrane component. When the instantaneous flow rate is greater than or equal to the preset flow rate threshold, it is determined that the filter membrane component is not clogged. The power component is then rotated in the forward direction to drive the liquid to be tested to flow out through the outlet of the control component.

13. The sampling method of claim 11, wherein, Before performing the filtration operation on the liquid to be tested using the control component, the method further includes: Determine the preset sampling parameters; Based on the sampling parameters, the control component is used to perform a filtration operation on the liquid to be tested.

14. The sampling method of claim 11, wherein, The method further includes: Monitor the operating status of the sampling equipment; When the operating state is abnormal, an alarm signal is output.

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