Intelligent monitoring device and method for organic pollution of farmland soil

Abstract

The invention provides a farmland soil organic matter pollution intelligent monitoring device and method.The device comprises an aircraft and an intelligent detection platform, the intelligent detection platform comprises gas analysis equipment, the aircraft is provided with soil sampling equipment and gas collection equipment, the soil sampling equipment can contain a soil sample into a sampling bin, and the gas collection equipment can collect the gas sample into the sampling bin; the soil sample is heated in the sampling bin so as to generate organic gas; and then the gas in the sampling bin is conveyed into the gas collecting bottle by the gas sampling equipment, and the current pollution degree of the organic matters in the soil of the farmland can be obtained by analyzing the gas in the gas collecting bottle. According to the technical scheme, the accuracy of detecting the organic pollution in the soil can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil pollution monitoring, in particular to an intelligent monitoring device and method for organic matter pollution in farmland soil. BACKGROUND

[0002] Soil organic matter pollution refers to the phenomenon that due to human activities, some persistent and toxic and harmful organic compounds are introduced into the soil environment, the quantity and speed of which exceed the self-purification capacity of the soil, thereby causing deterioration of the soil environment quality and posing risks to the ecological system and human health. Farmland is a site for planting crops, and if the soil of the farmland is polluted by organic matter, the growth of the planted crops will be affected, and even the produced agricultural products will be toxic, so it is very important to detect the organic matter pollution in the soil of the farmland.

[0003] The method for monitoring the organic matter pollution in the soil of the farmland in the prior art is to insert a sampling device into the soil and heat the soil to volatilize the organic gas in the soil, and then analyze the composition of the volatilized gas to obtain the type and content of the harmful organic gas. In order to improve the detection efficiency and reduce the labor cost, the sampling device can be assembled on a UAV to automatically monitor the organic matter pollution in the soil by the UAV. The currently used sampling device heats the soil around it, and after the soil is heated, the organic gas will not only enter the sampling device, but also volatilize into the surrounding soil, and the soil unit corresponding to the organic gas cannot be determined, so the accuracy of the organic matter pollution in the soil of the farmland cannot be guaranteed. SUMMARY

[0004] The present application provides an intelligent monitoring device and method for organic matter pollution in farmland soil, which aims to improve the accuracy of monitoring the organic matter pollution in the soil.

[0005] Specifically, in a first aspect, the present application provides an intelligent monitoring device for organic matter pollution in farmland soil, comprising: an aircraft configured to obtain an operation instruction and fly to a preset sampling position of a farmland according to the operation instruction; a soil sampling device assembled on the aircraft, comprising a sampling bin, a rotary knife assembled at the bottom of the sampling bin, and a heating rod inside, wherein the rotary knife is used to put a soil sample into the sampling bin, and the heating rod is used to heat the soil sample to volatilize organic gas; The gas collection device is assembled on the aircraft and comprises a gas charging bin, a gas collection pipeline and a gas collecting bottle, wherein the gas charging bin is connected to the sampling bin, the first end of the gas collection pipeline is connected to the sampling bin and the second end is connected to the gas collecting bottle, and the gas charging bin is used to input inert gas into the sampling bin to make the organic gas volatilized from the soil sample enter the collection pipeline and be transported to the gas collecting bottle through the collection pipeline; The intelligent detection platform is communicatively connected to the aircraft and is provided with a gas analysis device and is configured to generate the operation instruction and send it to the aircraft, and analyze the organic gas in the gas collecting bottle by using the gas analysis device to obtain the current pollution degree of the organic matter in the soil of the farmland.

[0006] Further, the inside of the sampling bin is provided with a position sensor for detecting the sampling amount of the soil sample.

[0007] Further, the bottle opening diameter of the gas collecting bottle is smaller than the bottle body diameter, the inside of the gas collecting bottle is provided with a piston, and the piston is controlled to be pumped according to the charging speed of the inert gas during the process that the gas charging bin charges inert gas into the gas collection pipeline.

[0008] Further, the gas collection device comprises a gas blocking plate and a plurality of gas collecting bottles, wherein the gas blocking plate is provided with a charging hole, the gas blocking plate is assembled at the bottle opening of the gas collecting bottle to block the bottle opening, and the gas blocking plate is used to deliver gas to the gas collecting bottle when the charging hole is opposite to the bottle opening of the gas collecting bottle.

[0009] Further, the gas collection device further comprises a rotating disc, a plurality of gas collecting bottles are assembled on the rotating disc, and the rotating disc is configured to rotate to align the bottle opening of one of the gas collecting bottles with the charging hole before the gas charging bin charges gas into the sampling bin, and rotate to block the bottle opening of the gas collecting bottle by the gas blocking plate after the gas of the sampling bin 3 is discharged into the gas collecting bottle. In the second aspect, the application further provides an intelligent monitoring method for soil organic matter pollution in farmland, which is characterized in that it is used for the intelligent monitoring device for soil organic matter pollution in farmland described in any one of the preceding aspects, and comprises: Obtaining the topographic information and the geological information of the farmland, determining the preset sampling position according to the geological information and the topographic information, and generating the operation instruction according to the preset sampling position and sending it to the aircraft; Controlling the gas analysis device to analyze the organic gas in the gas collecting bottle to obtain the composition and content of the organic gas, and obtaining the current pollution degree of the organic matter in the soil of the farmland according to the composition and the content.

[0010] Further, the step of obtaining the current pollution degree of the organic matter in the soil of the farmland according to the component and the content comprises: According to the component and the content, the pollution degree of the organic matter in each of the preset sampling positions is obtained respectively, and the pollution degrees of the organic matter are fused according to the position information of each of the preset sampling positions to obtain the current pollution degree.

[0011] Further, after the step of obtaining the current pollution degree of the organic matter in the soil of the farmland according to the component and the content, the method further comprises: obtaining a historical pollution degree of the organic matter in the soil of the farmland, and obtaining a pollution change trend of the organic matter in the farmland according to the historical pollution degree and the current pollution degree.

[0012] The technical solution provided by the application can put the soil sample into the sampling bin and heat the soil sample in the sampling bin to make the soil sample generate organic gas, then the gas sampling device can transport the gas in the sampling bin to the gas collection bottle, and by analyzing the gas in the gas collection bottle, the current pollution degree of the organic matter in the soil of the farmland can be obtained. Since the technical solution of the application can prevent the escape of organic gas by putting the soil sample into the sampling bin for extraction of organic gas, and by analyzing the quantitative soil sample, the current pollution degree of the organic matter in the soil can be accurately obtained.

[0013] The above and other objects, advantages and features of the application will become more apparent from the following detailed description of some embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] Some specific embodiments of the application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 is a schematic diagram of an intelligent farmland soil organic matter pollution monitoring device according to an embodiment of the application; Figure 2 is a structural schematic diagram of a soil sampling device and a gas sampling device according to an embodiment of the application; Figure 3 is a flowchart of collecting organic gas at a preset sampling position according to an embodiment of the application; Figure 4 is a structural schematic diagram of a soil sampling device and a gas sampling device according to another embodiment of the application; Figure 5This is a schematic diagram of the structure of a soil sampling device and a gas sampling device according to another embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a baffle plate in a gas sampling device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the baffle plate and the turntable in a gas sampling device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the rotary table in a gas sampling device according to an embodiment of the present invention; Figure 9 This is a circuit diagram of an aircraft according to an embodiment of the present invention; Figure 10 This is a control circuit diagram of a controller according to an embodiment of the present invention.

[0015] Attached labeling: 10 Intelligent detection platform, 11 Host computer, 12 Gas analysis equipment, 20 Aircraft, 21 Flight controller, 30 Soil sampling equipment, 31 Sampling chamber, 311 Air inlet, 312 Air outlet, 32 Rotary cutter, 321 Drive motor, 322 Blade, 33 Heating rod, 331 Heating wire, 34 Position sensor, 40 Gas collection equipment, 41 Inflation chamber, 411 Air inlet pipe. 412 is the first solenoid valve, 413 is the air pump, 42 is the gas collection pipe, 421 is the second solenoid valve, 43 is the gas collection bottle, 431 is the bottle mouth, 432 is the bottle body, 441 is the piston, 442 is the connecting rod, 443 is the control panel, 451 is the linear motor, 452 is the slot, 46 is the baffle plate, 460 is the groove, 461 is the air filling hole, 47 is the turntable, 470 is the rotating shaft, 471 is the assembly hole, 48 is the rotary motor, and 481 is the drive shaft. Detailed Implementation

[0016] The following reference Figures 1 to 10 This invention describes an intelligent monitoring device and method for organic pollution in farmland soil. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0017] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0018] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0020] Please see Figure 1 , Figure 1 The device shown is an intelligent monitoring device for organic pollution in farmland soil. The device includes an intelligent detection platform 10 and a flying vehicle 20. The intelligent detection platform 10 is equipped with a host computer 11 and a gas analysis device 12. The flying vehicle 20 is equipped with a flight controller 21 and a soil sampling device 30 and a gas collection device 40.

[0021] like Figure 2As shown, the soil sampling device 30 includes a sampling chamber 31, the bottom of which is provided with a soil sampling port, and a rotary blade 32 is installed in the soil sampling port. The rotary blade 32 includes a drive motor 321 and multiple blades 322. The power module of the aircraft 20 is connected to the drive motor 321 through a forward rotation line and a reverse rotation line. A normally open contact of a relay K11 is provided on the forward rotation line, and a normally open contact of a relay K12 is provided on the reverse rotation line. One end of relays K11 and K12 is connected to the power module through resistors R11 and R12, respectively, and the other end is connected to the collector of transistors Q11 and Q12, respectively. The emitters of transistors Q11 and Q12 are grounded, and the bases are connected to the flight controller 21 through resistors R21 and R22, respectively. The flight controller 21 can send a high-level signal to the base of transistor Q11 or Q12 to turn on transistor Q11 or Q12. When transistor Q11 is turned on, the coil of relay K11 is energized and its normally open contact is closed. When transistor Q12 is turned on, the coil of relay K12 is energized and its normally open contact is closed.

[0022] After the normally open contact of relay K11 is closed, the power module supplies power to the drive motor 321 through the forward rotation circuit, so that the drive motor 321 rotates forward and drives the blade 322 to rotate clockwise, thereby lifting the soil sample and bringing it into the sampling chamber 31. After the normally open contact of relay K12 is closed, the power module supplies power to the drive motor 321 through the reverse rotation circuit, so that the drive motor 321 rotates in reverse and drives the blade 322 to rotate counterclockwise, thereby expelling the soil sample from the sampling chamber 31.

[0023] The top of the sampling chamber 31 is mounted on the bottom of the aircraft 20, and a heating rod 33 is installed inside. One end of the heating rod 33 is fixed to the top of the sampling chamber 31, and the other end is suspended inside the sampling chamber 31. Heating wires 331 are evenly laid on the heating rod 33. The heating wires 331 are connected to the power module through a power supply line, and the normally open contact of the relay K13 is set on the power supply line. One end of the relay K13 is connected to the power module through a resistor R13, and the other end is connected to the collector of the transistor Q13. The emitter of the transistor Q13 is grounded, and the base is connected to the flight controller 21 through resistors R21 and R23. The flight controller 21 can send a high-level signal to the base of the transistor Q13 to turn on the transistor Q13. After the transistor Q13 turns on, the coil of the relay K13 is energized and its normally open contact closes. When relay K13 is closed, heating wire 331 is energized to heat the soil sample inside sampling chamber 31, so that the organic gases in the soil sample are heated and volatilized. The organic gases may include benzene-based substances such as toluene, xylene, ethylbenzene, and styrene; halogenated hydrocarbons such as trichloroethylene, tetrachloroethylene (common dry cleaning agent), chloroform, and dichloromethane; or aldehydes and ketones such as formaldehyde, acetaldehyde, acetone, and butanone.

[0024] The gas sampling device 40 of this embodiment includes an inflation chamber 41, a gas sampling pipe 42, and a gas collection bottle 43. The inflation chamber 41 stores an inert gas, which is nitrogen in this embodiment. Its output interface is connected to the air inlet 311 of the sampling chamber 31 through the air inlet pipe 411. A first solenoid valve 412 and a vacuum pump 413 are provided on the air inlet pipe 411. The power module is connected to the power terminal of the first solenoid valve 412 through the normally open contact of relay K21 and to the power terminal of the vacuum pump 413 through the normally open contact of relay K22.

[0025] One end of relays K21 and K22 is connected to the power module through resistors R14 and R15, respectively, and the other end is connected to the collector of transistors Q14 and Q15, respectively. The emitters of transistors Q14 and Q15 are grounded, and the bases are connected to the flight controller 21 through resistors R24 and R25, respectively. The flight controller 21 can send a high-level signal to the base of transistor Q14 or Q15 to turn on transistor Q14 or Q15. When transistor Q14 is turned on, the coil of relay K14 is energized and its normally open contact is closed. When transistor Q15 is turned on, the coil of relay K15 is energized and its normally open contact is closed. The flight controller 21 of the aircraft 20 can control the normally open contact of the relay K21 to close to control the first solenoid valve 412 to open, and control the normally open contact of the relay K22 to close to control the air pump 413 to start working, so that the inert gas in the air chamber 41 is filled into the sampling chamber 31 under the action of the air pump 413.

[0026] The first end of the gas sampling pipeline 42 is connected to the gas outlet 312 of the sampling chamber 31, and the second end is connected to the gas collecting bottle 43, with the gas inlet 311 located above the gas outlet 312. A second solenoid valve 421 is installed on the gas sampling pipeline 42, and the power supply terminal of the second solenoid valve 421 is connected to the power module through the normally open contact of the relay K23. One end of the coil of relay K23 is connected to the power module through resistor R16, and the other end is connected to the collector of transistor Q16. The base of transistor Q16 is connected to flight controller 21 through resistor R26, and the emitter is grounded. Flight controller 21 can send a high-level signal to the base of transistor Q16 to turn it on. After transistor Q16 is turned on, the coil of relay K23 is energized, thereby controlling the coil of relay K23 to be energized to open the second solenoid valve 421. After the inert gas in the inflation chamber 41 is filled into the sampling chamber 31, the organic gas emitted by the soil sample is discharged into the gas collection bottle 43 through the gas sampling pipe 42.

[0027] The host computer 11 on the intelligent detection platform 10 is connected to the gas analysis device 12 and communicates with the flight controller 21 of the aircraft 20. The host computer 11 is used for: An operation instruction for detecting organic pollution in farmland is generated and sent to the flight controller 21 of the aircraft 20, so that the flight controller 21 controls the aircraft 20 to collect organic gases from the farmland according to the operation instruction. The analysis results of the collected organic gases are obtained by the gas analysis device 12, and the current pollution level of organic matter in the soil of farmland is obtained based on the analysis results.

[0028] In this embodiment, the operation instruction includes a preset sampling location for organic gas collection. Upon receiving the operation instruction, the flight controller 21 of the aircraft 20 determines the preset sampling location in the farmland based on the instruction, controls the aircraft 20 to fly to the preset sampling location, and controls the soil sampling device 30 and the gas collection device 40 to sample the organic gases in the soil. Taking one preset sampling location as an example, the method for collecting organic gases at that location includes... Figure 3 As shown, it includes the following steps: Step S101: Control the rotary cutter 32 to rotate forward to sample the soil at the preset sampling location and put the soil sample into the sampling chamber 31; Step S102: Control the heating rod 33 to heat the soil sample inside the sampling chamber 31 so that the organic gas therein will evaporate due to heat. In step S103, the first solenoid valve 412 and the air pump 413 are opened to fill the sampling chamber 31 with inert gas from the air chamber 41, and the second solenoid valve 421 is opened to discharge the organic gas volatilized from the soil sample from the gas collection pipe 42 into the gas collection bottle 43.

[0029] In this embodiment, the signal output terminal of the gas analysis device 12 is connected to the host computer 11, and a photoionization detector and a mass spectrometer can be used. After the aircraft 20 samples at each preset sampling location in the farmland according to the acquired operation instructions, it returns to the intelligent detection platform 10, and the staff inputs the gas in the gas collection bottle 43 into the gas analysis device 12 to obtain the types of organic gases and the content of each type of organic gas and send it to the host computer 11.

[0030] In this embodiment, the pollution levels corresponding to the content ranges of each type of polluting organic gas can be preset on the host computer 11. After obtaining the type and content of organic gas in the gas collecting bottle 43, it can be determined whether the organic gas is polluting based on its type. If there is polluting organic gas in the gas collecting bottle 43, the content of the organic gas is obtained, and the pollution level corresponding to the type of organic gas is obtained based on the content range, thereby obtaining the degree of pollution caused by each type of polluting organic gas.

[0031] The gas analysis device 12 at the intelligent detection platform 10 analyzes the gas in the gas collection bottle 43, the host computer 11 obtains the analysis results, and obtains the current pollution level of organic matter in the soil of the farmland based on the analysis results.

[0032] As described above, the soil sampling device of this embodiment can include soil samples in a sampling chamber and heat the soil samples within the chamber to generate organic gases. Then, a gas sampling device transports the gas from the sampling chamber to a gas collection bottle. By analyzing the gas in the collection bottle, the current level of organic pollution in the farmland soil can be obtained. Because the technical solution of this embodiment includes soil samples in a sampling chamber for organic gas extraction, it prevents the escape of organic gases, and by analyzing a quantitative amount of soil samples, the current level of organic pollution in the soil can be accurately determined.

[0033] In some embodiments of the present invention, a position sensor 34 is provided inside the sampling chamber 31. The position sensor 34 is used to detect the amount of soil sample taken in the sampling chamber 31 and to stop sampling when the amount of soil sample taken reaches the set amount of soil sample taken.

[0034] Specifically, in this embodiment, the position sensor 34 can be a laser sensor. The laser sensor is mounted on the top of the sampling chamber 31 and its signal output terminal is connected to the flight controller 21 of the aircraft 20. It is used to detect the distance between the soil sample in the sampling chamber 31 and the top and send it to the flight controller 21. After receiving the distance, the flight controller 21 determines whether the distance is the set distance value. If it is, it determines that the sampling amount of the soil sample is the set sampling amount.

[0035] In this embodiment, by assembling a position sensor 34 in the sampling chamber 31, the sampling amount of the soil sample included in the sampling chamber 31 is detected, thereby realizing quantitative analysis of the soil sample and ensuring the accuracy of organic matter detection in farmland soil.

[0036] In some embodiments of the present invention, such as Figure 4 As shown, the gas collecting bottle 43 includes a bottle body 432 and a bottle mouth 431, wherein the diameter of the bottle mouth 431 is smaller than the diameter of the bottle body 432, and a piston 441 is provided inside the bottle body 432. The piston 441 is connected to the operating plate 443 through a connecting rod 442. One end of the operating plate 443 is provided in a slot 452, which is provided on a linear motor 451, and can reciprocate under the drive of the linear motor 451.

[0037] In this embodiment, the linear motor 451 is connected to the power module via a forward circuit and a reverse circuit. A normally open contact of relay K31 is provided in the forward circuit, and a normally open contact of relay K32 is provided in the reverse circuit. One end of relays K31 and K32 is connected to the power module via resistors R17 and R18, respectively, and the other end is connected to the collectors of transistors Q17 and Q18, respectively. The emitters of transistors Q17 and Q18 are grounded, and their bases are connected to the flight controller 21 via resistors R27 and R28, respectively. The flight controller 21 can send a high-level signal to the base of transistor Q17 or Q18 to turn on either transistor. When transistor Q17 turns on, the coil of relay K31 is energized and its normally open contact closes; when transistor Q18 turns on, the coil of relay K32 is energized and its normally open contact closes. The flight controller 21 of the aircraft 20 can control the normally open contact of the relay K31 to close to control the linear motor 451 to move forward, driving the operation plate 443 in the card slot 452 to move to pull the piston 441 out of the bottle body 432, and can also control the normally open contact of the relay K32 to close to control the linear motor 452 to move in the reverse direction, driving the operation plate 443 in the card slot 452 to move to push the piston 441 into the bottle body 432.

[0038] In this embodiment, during the process of controlling the filling chamber 41 to fill the sampling chamber 31 with inert gas, the linear motor 451 is controlled to pull the piston 441 to increase the volume of the gas collecting bottle 43 and discharge the gas in the sampling chamber 31 into the gas collecting bottle 43.

[0039] In this embodiment, a piston 441 is provided inside the gas collecting bottle 43. The gas collecting bottle 43 can be filled with the organic gas volatilized from the soil sample by operating the piston 441, or the gas in the gas collecting bottle 43 can be filled into the gas analysis device 12, thereby improving the convenience of gas collection and gas emission of the gas collecting bottle.

[0040] In some embodiments of the present invention, the gas collection device 40 includes a baffle plate 46 and a plurality of gas collection bottles 43, wherein the baffle plate 46 is provided with an inflation hole 461, the baffle plate 46 is disposed at the mouth of the gas collection bottle 43 to block it, and gas is delivered into the gas collection bottle 43 when the inflation hole 461 is opposite to the mouth of the gas collection bottle 43.

[0041] Specifically, such as Figure 5 , Figure 6 and Figure 7 As shown, the gas collection device 40 also includes a turntable 47. The center of one side of the turntable 47 is connected to a rotary motor 48 via a drive shaft 481. One end of the coil of relay K41 is connected to a power module via a resistor R19, and the other end is connected to the collector of transistor Q19. The base of transistor Q19 is connected to flight controller 21 via a resistor R29, and the emitter is grounded. Flight controller 21 can send a high-level signal to the base of transistor Q19 to turn it on. After transistor Q19 is turned on, the coil of relay K41 is energized, thereby controlling the coil of relay K41 to be energized and the rotary motor 48 to start. A rotating shaft 470 is provided at the center of the other side of the turntable 47, and an assembly hole 471 is provided at the edge of the turntable 47. A groove 460 matching the rotating shaft 470 is provided at the center of the baffle plate 46. The rotating shaft 470 is inserted into the groove 460 and can rotate in the groove 460 so that the inflation hole 461 is opposite to or offset from the assembly hole 471. The mouth 431 of the gas collecting bottle 43 is fitted into the assembly hole 471. When the filling hole 461 corresponds to the assembly hole 471, the gas collecting bottle 43 is connected to the sampling chamber 31 through the gas sampling pipe 43. When the filling hole 461 is misaligned with the assembly hole 471, the baffle plate 46 can block the mouth 431 to prevent the gas in the bottle body 432 from escaping.

[0042] In this embodiment, a baffle plate 46 is provided. After the organic gases volatilized from the soil sample are collected, the baffle plate 46 can be used to cover the mouth 431 of the gas collecting bottle 43 to prevent the organic gases in the gas collecting bottle 43 from escaping and causing large errors in the detection results.

[0043] In some embodiments of the present invention, such as Figure 8 As shown, the turntable 47 has multiple evenly distributed mounting holes 471 on its edge, and each mounting hole 471 is fitted with the mouth 431 of a gas collecting bottle 43. Before the gas filling chamber 41 fills the sampling chamber 31 with inert gas, the turntable 47 is rotated so that the mouth 431 of one of the gas collecting bottles 43 is aligned with the gas filling hole 461; after the gas in the sampling chamber 31 is discharged into the gas collecting bottle 43, it is rotated so that the baffle plate 46 blocks the mouth 431 of the gas collecting bottle 43.

[0044] Specifically, assuming that the turntable 47 has n mounting holes, the set angle for the rotation of the rotary motor 48 each time is 180° / n. Before collecting organic gas at one of the preset collection positions, the rotary motor 48 is controlled to rotate by the set angle so that the mouth 431 of one of the gas collecting bottles 43 is aligned with the filling hole 461, and the collected organic gas is stored in the gas collecting bottle 43. After each organic gas collection is completed, the rotary motor 48 is controlled to rotate by the set angle so that the baffle plate 46 blocks the mouth 431 of the gas collecting bottle 43 to prevent the organic gas stored in the gas collecting bottle 43 from escaping.

[0045] In this embodiment, multiple gas collecting bottles 43 are assembled on the turntable 47, and through the cooperation between the turntable 47 and the baffle plate 46, organic gases can be continuously collected from multiple preset collection positions, thereby improving the efficiency of detecting organic pollution in farmland soil.

[0046] In some embodiments of the present invention, the intelligent monitoring method for organic pollution in farmland soil executed by the host computer 11 in the intelligent detection platform 10 includes: The system acquires topographic and geological information of farmland, determines the preset sampling location of farmland based on the geological and topographic information, and generates operation instructions based on the preset sampling location and sends them to the flight controller 21 of the aircraft 20. The gas analysis device 12 obtains the analysis results of organic gases in the gas collecting bottle 43, including the composition and content of organic gases, and obtains the current pollution level of organic matter in the soil of the farmland based on the composition and content.

[0047] In this embodiment, after obtaining the terrain and geological information of the farmland, the host computer 11 first divides the farmland into multiple detection areas based on the geological information. Each detection area has the same geology, such as sandy soil or clay. Then, based on the size of each detection area, the number of preset collection locations in each detection area is determined, with larger detection areas having more preset collection locations. Next, the location information of each preset collection location is determined, ensuring that the distance between adjacent preset collection locations is not less than a preset distance threshold. Finally, the collection order is determined based on the location information of each preset collection location, so that the flight path of the aircraft 20 for collection operations is minimized according to the collection order, and the collection order is used as the operation command.

[0048] In this embodiment, the pollution levels corresponding to the content ranges of each type of polluting organic gas can be preset on the host computer 11. After obtaining the type and content of organic gas in the gas collecting bottle 43, it can be determined whether the organic gas is polluting based on its type. If there is polluting organic gas in the gas collecting bottle 43, the content of the organic gas is obtained, and the pollution level corresponding to the type of organic gas is obtained based on the content range, thereby obtaining the degree of pollution caused by each type of polluting organic gas.

[0049] In some embodiments of the present invention, the method by which the host computer 11 analyzes the gas in the gas collecting bottle 43 based on the analysis results of the gas analysis device 12 includes: First, based on the composition and content of organic gas in gas collecting bottle 43, the degree and type of organic pollution at each preset sampling location are obtained. Then, the degree of organic pollution is fused based on the location information of each preset location to obtain the current degree of organic pollution in the farmland soil.

[0050] In this embodiment, the method for fusing the degree of organic pollution based on the location information of each preset sampling location includes: if the content of one polluting organic gas at one of the preset sampling locations is greater than a set content threshold, then obtain whether the content of the polluting organic gas at the preset number of preset sampling locations closest to the preset sampling location is greater than the set content threshold; if so, then obtain the content of the organic gas, and obtain the pollution level corresponding to the type of organic gas based on the content range, thereby obtaining the degree of pollution caused by each type of polluting organic gas.

[0051] In this embodiment, the degree of organic pollution is fused based on the location information of each preset location, which can improve the accuracy of detecting organic pollution in farmland soil.

[0052] In some embodiments of the present invention, after obtaining the current pollution level of organic matter in the soil of farmland, the host computer 11 of the intelligent detection platform 10 is further used for: The historical pollution level of organic matter in farmland soil is obtained, and the trend of organic matter pollution in farmland soil is obtained based on the historical pollution level and the current pollution level.

[0053] In this embodiment, organic pollution change curves are plotted at each preset sampling location to illustrate changes in organic pollution. Taking one preset sampling location as an example, the content change trend of each polluting organic gas at that location can be plotted. Taking one polluting organic gas at that preset sampling location as an example, the historical content and current content of the polluting organic gas can be sorted sequentially, and the sorting can be input into graphing software, such as the curve plotting module in Excel, to obtain a curve with time as the horizontal axis and the polluting organic gas as the vertical axis.

[0054] This embodiment obtains the changing trend of organic pollution in farmland soil, which can help users understand the changes of each type of polluting organic matter in the soil, and provide a basis for users to manage farmland and prevent farmland pollution.

[0055] The flowcharts provided in this embodiment are not intended to indicate that the operations of the method will be performed in any particular order, or that all operations of the method are included in every case. Furthermore, the method described above may include additional operations. Within the scope of the technical concept provided by the method in this embodiment, additional variations can be made to the method described above.

[0056] It should be understood that in some embodiments, the components may be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods may be implemented using software or firmware stored in memory and executed by a suitable instruction execution system.

[0057] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. An intelligent monitoring device for organic matter pollution in farmland soil, characterized in that, The application relates to an intelligent monitoring device for organic matter pollution in farmland soil, which comprises the following parts: an aircraft configured to obtain operation instructions and fly to preset sampling positions of a farmland according to the operation instructions; a soil sampling device mounted on the aircraft, which comprises a sampling bin, a rotary knife mounted at the bottom of the sampling bin and a heating rod inside the sampling bin, wherein the rotary knife is used for putting soil samples into the sampling bin, and the heating rod is used for heating the soil samples to volatilize organic gases; a gas collecting device mounted on the aircraft, which comprises a gas charging bin, a gas collecting pipeline and a gas collecting bottle, wherein the gas charging bin is connected to the sampling bin, the first end of the gas collecting pipeline is connected to the sampling bin, and the second end of the gas collecting pipeline is connected to the gas collecting bottle, wherein the gas charging bin is used for inputting inert gas into the sampling bin, so that the organic gases volatilized from the soil samples enter the collecting pipeline and are transported into the gas collecting bottle through the collecting pipeline; an intelligent detection platform in communication connection with the aircraft and provided with a gas analysis device, and configured to generate the operation instructions and send the operation instructions to the aircraft, and analyze the organic gases in the gas collecting bottle by using the gas analysis device to obtain the current pollution degree of organic matters in the soil of the farmland. 2.The farmland soil organic matter pollution intelligent monitoring device according to claim 1, characterized in that, The inside of the sampling bin is provided with a position sensor for detecting the sampling amount of the soil samples. 3.The farmland soil organic matter pollution intelligent monitoring device according to claim 1, characterized in that, The mouth diameter of the gas collecting bottle is smaller than the body diameter, the inside of the gas collecting bottle is provided with a piston, and the piston is controlled to move according to the charging speed of the inert gas in the process of charging the inert gas into the gas collecting pipeline through the gas charging bin. 4.The farmland soil organic matter pollution intelligent monitoring device according to claim 1, characterized in that, The gas collecting device comprises a gas blocking plate and a plurality of gas collecting bottles, wherein the gas blocking plate is provided with a charging hole, the gas blocking plate is mounted at the mouth of the gas collecting bottle to block the mouth, and the gas blocking plate is used for transporting gas to the gas collecting bottle in the case that the charging hole is opposite to the mouth of the gas collecting bottle. 5.The farmland soil organic matter pollution intelligent monitoring device according to claim 4, characterized in that, The gas collecting device further comprises a rotating disc, and the plurality of gas collecting bottles are mounted on the rotating disc, and the rotating disc is configured to rotate to align the mouth of one of the gas collecting bottles with the charging hole before the gas charging bin charges gas into the sampling bin, and rotate to block the mouth of the gas collecting bottle by the gas blocking plate after the gas in the sampling bin 3 is discharged into the gas collecting bottle.

6. An intelligent monitoring method for organic matter pollution in farmland soil, characterized in that, The application relates to an intelligent monitoring device for organic matter pollution in farmland soil, which comprises the following parts: obtaining topographic information and geological information of the farmland, determining the preset sampling positions according to the geological information and the topographic information, generating the operation instructions according to the preset sampling positions and sending the operation instructions to the aircraft; controlling the gas analysis device to analyze the organic gases in the gas collecting bottle to obtain the composition and content of the organic gases, and obtaining the current pollution degree of organic matters in the soil of the farmland according to the composition and the content. 7.The farmland soil organic matter pollution intelligent monitoring method according to claim 6, characterized in that, The step of obtaining the current pollution degree of organic matters in the soil of the farmland according to the composition and the content comprises the following steps: obtaining the pollution degrees of organic matters of each preset sampling position according to the composition and the content, and fusing the pollution degrees of organic matters according to the position information of each preset sampling position to obtain the current pollution degree. 8.The method according to claim 6, wherein, After the step of obtaining the current pollution degree of the organic matter in the soil of the farmland according to the ingredient and the content, the method further comprises: obtaining a historical pollution degree of the organic matter in the soil of the farmland, and obtaining a change trend of the pollution of the organic matter in the farmland according to the historical pollution degree and the current pollution degree.

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