An unmanned aerial vehicle carrying NO monitoring electrochemical sensor device

Abstract

The application discloses a kind of unmanned plane carries NO monitoring electrochemical sensor device, including unmanned plane body, shell is arranged above the unmanned plane body, square suction cylinder is fixed on the upper side of NO monitoring electrochemical sensor body, driving mechanism is installed on the upper side of the inner side of NO monitoring electrochemical sensor body, and the driving mechanism can start work and extract sample of atmosphere in another area, and suction mechanism is installed on the upper side of NO monitoring electrochemical sensor body, and the suction mechanism can extract the one nitrogen monoxide gas in its inner side completely.The application can effectively avoid the problem that the inner side of NO monitoring electrochemical sensor body is mixed with the gas extracted in this area after the gas in the next area is sampled and detected, so as to increase the accuracy of NO concentration detection in each area.

Description

Technical Field

[0001] This invention relates to the field of atmospheric environment monitoring technology, specifically to an electrochemical sensor device for NO monitoring mounted on a drone. Background Technology

[0002] Currently, most NO monitoring electrochemical sensors on the market that are mounted on drones rely on imported NO monitoring electrochemical sensors, such as the Alphasense NO-B4 nitric oxide sensor from the UK. Domestic NO monitoring electrochemical sensors have a shorter lifespan, slower NO characteristic electrical signal recognition speed, and lower sensitivity. In addition, the NO monitoring electrochemical sensors mounted on drones are limited by size, resulting in a small and narrow NO monitoring range. Especially when sampling and detecting different areas, existing electrochemical sensors are not easy to completely remove the previously sampled gas from their inside, which makes it impossible to accurately detect the nitric oxide concentration in the area when sampling and detecting the atmosphere again, thus presenting certain drawbacks.

[0003] Therefore, it is necessary to provide a UAV-mounted electrochemical sensor device for NO monitoring to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a device for monitoring NO using an electrochemical sensor mounted on a drone. Through a drive mechanism, this device can effectively avoid the problem that when the NO monitoring electrochemical sensor body is sampled and detected in the next area, the residual gas inside the sensor body after detection in the previous area mixes with the gas sampled in this area, thus affecting the accuracy of concentration detection. This increases the accuracy of NO concentration detection in each area and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drone-mounted electrochemical sensor device for NO monitoring, comprising a drone body, a shell disposed on the top of the drone body, and an electrochemical sensor body for NO monitoring connected to the inner side of the shell, an IC integrated circuit board mounted on the bottom of the electrochemical sensor body, and a power supply and signal output circuit connected to the upper right side of the IC integrated circuit board, a base disposed below the IC integrated circuit board, and a bracket mounted on the bottom of the base by screws, a square suction cylinder fixed on the top of the electrochemical sensor body for NO monitoring, and connecting pipes connected to both sides of the suction cylinder, and a device mounted on the upper inner side of the electrochemical sensor body for NO monitoring that facilitates the start-up of the suction mechanism and can also... A driving mechanism for sampling atmospheric gases in a region is provided, and a suction mechanism capable of completely extracting nitrogen monoxide gas detected in the previous test is installed above the body of the NO monitoring electrochemical sensor. The driving mechanism includes a miniature electric telescopic rod installed above the inner side of the NO monitoring electrochemical sensor body, and a driving rod welded to the left side of the miniature electric telescopic rod. A piston block and a plug are installed on the outer side of the left end of the driving rod, and a rack plate is fixed on the upper right side of the driving rod. The suction mechanism includes a threaded rod with a bearing connected to the inner side of the suction cylinder, and a transmission gear is welded to the outer side of the end of the threaded rod. A valve plate is threadedly connected to the lower outer side of the threaded rod, and a piston plate is threadedly connected to the outer side of the middle of the threaded rod. Exhaust holes are provided on both the left and right sides of the piston plate.

[0006] In a further embodiment, a dust filter is installed on the upper inner side of the NO monitoring electrochemical sensor body, and a toxic gas chamber is provided below the dust filter. A porous membrane is installed below the toxic gas chamber, and an electrolyte is stored below the porous membrane. A reservoir is provided below the electrolyte through a partition, and a working electrode, an auxiliary electrode, a reference electrode, and a counter electrode are sequentially installed on the inner side of the middle of the electrolyte. Pins are installed on both the left and right sides of the bottom of the NO monitoring electrochemical sensor body.

[0007] In a further embodiment, a power positive and negative input module, a signal amplification module, a cyclic volt-ampere electrical signal control module, and an electrical signal receiving, storage, and calculation module are respectively arranged on the upper left side of the IC integrated circuit board.

[0008] In a further embodiment, a lower breathing hole is provided on the lower left and right sides of the air extraction cylinder, and an upper breathing hole is provided on the upper left and right sides of the air extraction cylinder.

[0009] In a further embodiment, the piston block and the plug are both connected in a sealed sliding manner to the through hole inside the upper left side of the NO monitoring electrochemical sensor body.

[0010] In a further embodiment, a cross-shaped connecting plate is fixed to the inner side of the lower end of the connecting pipe, and a rubber gasket is provided above the cross-shaped connecting plate.

[0011] In a further embodiment, the rubber gasket is fixedly connected to the middle of the cross connecting plate, and the bottom of the outer ring of the rubber gasket is in contact with the top surface of the outer ring of the cross connecting plate. The rubber gasket is thin on the outside and thick on the inside.

[0012] In a further embodiment, the outer sides of both the valve plate and the piston plate form a lifting and sliding structure with the inner wall of the suction cylinder.

[0013] In a further embodiment, the outer side of the transmission gear meshes with the rack plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention is equipped with a driving mechanism and a suction mechanism. A miniature electric telescopic rod drives the driving rod and the rack plate on the upper right side to move rapidly to the left a short distance. This effectively causes the transmission gear to rotate the threaded rod, which in turn causes the valve plate and piston plate to move upwards. The upward movement of the piston plate, combined with the suction force of the square suction cylinder and connecting pipe, and the upward deformation of the rubber gasket, effectively draws all residual gas stored in the internal cavity of the NO monitoring electrochemical sensor after detection in the previous area into the suction cylinder. Then, as the valve plate rises, it blocks the air inlet at the upper end of the connecting pipe. Compared with existing UAV-mounted NO monitoring electrochemical sensor devices, this invention effectively avoids the problem of residual gas from the previous area mixing with the gas sampled in the next area, thus affecting the accuracy of concentration detection. This increases the accuracy of NO concentration detection in each area.

[0016] 2. This invention features a driving mechanism that utilizes a miniature electric telescopic rod to rapidly move a drive rod a large distance to the right. This effectively causes the piston block and the plug to move simultaneously with the air inlet on the upper left side of the NO monitoring electrochemical sensor body, moving the plug away from the air inlet. The remote control button then controls the miniature electric telescopic rod to move the drive rod to the right inside the air inlet, allowing the piston block to sample the gas in this area. The plug effectively seals the air inlet. Compared to existing UAV-mounted NO monitoring electrochemical sensor devices, this invention effectively performs closed-loop detection of the sampled gas in this area, further increasing the accuracy of NO detection in each region. Attached Figure Description

[0017] Figure 1A schematic diagram of a preferred embodiment of the electrochemical sensor device for NO monitoring mounted on a drone provided by the present invention;

[0018] Figure 2 for Figure 1 The diagram shows the exploded structure of the NO monitoring electrochemical sensor body and the IC integrated circuit board.

[0019] Figure 3 for Figure 1 The diagram shows the main cross-sectional structure of the NO monitoring electrochemical sensor body.

[0020] Figure 4 for Figure 3 The diagram shows the installation structure of the miniature electric telescopic rod and its drive rod.

[0021] Figure 5 for Figure 4 The enlarged structural diagram at point A is shown below;

[0022] Figure 6 Cyclic voltammetry curves of the electrochemical catalytic reduction of NO by a perovskite oxide-based gas diffusion cathode;

[0023] Figure 7 This is a graph showing the effect of NO electrochemical sensitivity.

[0024] In the diagram: 1. UAV body; 2. Shell; 3. NO monitoring electrochemical sensor body; 31. Dust filter; 32. Gas chamber; 33. Porous membrane; 34. Electrolyte; 35. Reservoir; 36. Working electrode; 37. Auxiliary electrode; 38. Reference electrode; 39. Counter electrode; 310. Pin; 4. IC integrated circuit board; 41. Power supply positive and negative input module; 42. Signal amplification module; 43. Cyclic voltammetric electrical signal control module; 44. Electrical signal receiving, storage, and calculation module; 5. Power supply and signal... 6. Output circuit; 7. Base; 8. Bracket; 9. Drive mechanism; 10. Miniature electric telescopic rod; 11. Drive rod; 12. Piston block; 13. Plug; 14. Rack plate; 15. Air pump; 16. Lower breathing hole; 17. Upper breathing hole; 18. Connecting pipe; 19. Cross connecting plate; 10. Rubber gasket; 10. Suction mechanism; 11. Threaded rod; 11. Threaded gear; 11. Threaded gear; 11. Threaded plate; 12. Piston plate; 13. Threaded exhaust port. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-7 One embodiment of the present invention provides a device for monitoring NO using an electrochemical sensor mounted on a drone, comprising: drone body 1, outer shell 2, NO monitoring electrochemical sensor body 3, dust filter 31, gas chamber 32, porous membrane 33, electrolyte 34, reservoir 35, working electrode 36, auxiliary electrode 37, reference electrode 38, counter electrode 39, pin 310, IC integrated circuit board 4, power positive and negative input module 41, signal amplification module 42, cyclic voltammetric electrical signal control module 43, electrical signal receiving, storage and calculation module 44, power supply and signal output circuit 5, base 6, bracket 7, drive mechanism 8, miniature electric telescopic rod 801, drive rod 802, piston block 803, plug 804, rack plate 805, suction cylinder 9, lower breathing hole 901, upper breathing hole 902, connecting pipe 10, cross connecting plate 1001, rubber gasket 1002, suction mechanism 11, threaded rod 1101, and transmission gear. The device includes a valve plate 1101a, a valve plate 1102, a piston plate 1103, and an exhaust port 1103a. A shell 2 is mounted on top of the UAV body 1, and an electrochemical sensor body 3 for NO monitoring is connected to the inside of the shell 2. An IC integrated circuit board 4 is mounted on the bottom of the electrochemical sensor body 3, and a power supply and signal output circuit 5 is connected to the upper right side of the IC integrated circuit board 4. A base 6 is located below the IC integrated circuit board 4, and a bracket 7 is mounted on the bottom of the base 6 using screws. A square suction cylinder 9 is fixed on top of the electrochemical sensor body 3, and connecting pipes 10 are connected to both the left and right sides of the suction cylinder 9. A drive mechanism 8 is installed on the upper inner side of the electrochemical sensor body 3, which facilitates the start of the suction mechanism 11 and allows for the extraction and sampling of air from another area. A suction mechanism 11 is also installed on top of the electrochemical sensor body 3, capable of completely extracting the previously detected nitrogen monoxide gas from its inner side.

[0027] Example 1: Please refer to Figure 1-5The driving mechanism 8 includes a miniature electric telescopic rod 801 installed on the upper inner side of the NO monitoring electrochemical sensor body 3. A driving rod 802 is welded to the left side of the miniature electric telescopic rod 801. A piston block 803 and a plug 804 are installed on the outer side of the left end of the driving rod 802. A rack plate 805 is fixed on the upper right side of the driving rod 802. Lower breathing holes 901 are opened on the lower left and right sides of the suction cylinder 9, and upper breathing holes 902 are opened on the upper left and right sides of the suction cylinder 9. The outer sides of the piston block 803 and the plug 804 are sealed and slidably connected to the through hole inside the upper left side of the NO monitoring electrochemical sensor body 3. The suction mechanism 11 includes a threaded rod 1101 with a bearing connected to the inner side of the suction cylinder 9. The end of the threaded rod 1101 is... A transmission gear 1101a is welded to the outside. A valve plate 1102 is threadedly connected to the lower outer side of the threaded rod 1101, and a piston plate 1103 is threadedly connected to the outer middle of the threaded rod 1101. Exhaust holes 1103a are provided on both the left and right sides of the piston plate 1103. A cross-shaped connecting plate 1001 is fixed to the inner side of the lower end of the connecting pipe 10, and a rubber gasket 1002 is provided above the cross-shaped connecting plate 1001. The middle of the rubber gasket 1002 is fixedly connected to the middle of the cross-shaped connecting plate 1001, and the bottom of the outer ring of the rubber gasket 1002 contacts the top surface of the outer ring of the cross-shaped connecting plate 1001. The rubber gasket 1002 is thin on the outside and thick on the inside. The outer sides of the valve plate 1102 and the piston plate 1103 form a lifting and sliding structure with the inner wall of the suction cylinder 9. The outer side of the transmission gear 1101a meshes with the rack plate 805. During use, when the UAV body 1 flies into the designated area to sample and detect NO, the micro electric telescopic rod 801 (model MNTL) is activated via the remote control button. This drives the drive rod 802 and the rack plate 805 on the upper right to move quickly to the left a short distance. Simultaneously, it rotates the transmission gear 1101a and the threaded rod 1101, causing the valve plate 1102 and piston plate 1103 on the upper and lower outer sides of the threaded rod 1101 to move upwards. As the piston plate 1103 moves upwards, it works in conjunction with the square suction cylinder 9 and connecting pipe 10, causing the rubber gasket 1002 to deform upwards under the suction force, thereby... The system effectively draws the residual gas stored in the inner cavity of the NO monitoring electrochemical sensor body 3 after detection in the previous area into the inner side of the suction cylinder 9. Then, as the valve plate 1102 rises, it blocks the air inlet at the upper end of the connecting pipe 10. Furthermore, the rising piston plate 1103, in conjunction with the connection between the exhaust ports 1103a on the left and right sides and the upper breathing port 902, allows the gas drawn into the inner side of the suction cylinder 9 to be discharged. This structure effectively avoids the problem of residual gas in the inner side of the NO monitoring electrochemical sensor body 3 after detection in the previous area mixing with the gas sampled in the next area, thus affecting the accuracy of concentration detection. This increases the accuracy of NO concentration detection in each area.When the inner cavity of the NO monitoring electrochemical sensor body 3 is in a vacuum state, the micro electric telescopic rod 801 is activated again by the remote control button, driving the drive rod 802 to move a large distance to the right quickly. This causes the piston block 803 and the plug 804 to move to the left in conjunction with the air inlet on the upper left side of the NO monitoring electrochemical sensor body 3. At this time, the piston block 803 is located inside the left end of the air inlet, while the plug 804 is located outside the air inlet. Then, the micro electric telescopic rod 801 is activated by the remote control button, driving the drive rod 802 to move to the right inside the air inlet. This causes the piston block 803 to extract and sample the gas in this area and enter the inner cavity of the NO monitoring electrochemical sensor body 3. At this time, the piston block 803 has entered the inner cavity of the NO monitoring electrochemical sensor body 3, while the plug 804 remains inside the air inlet. This effectively enables closed-loop detection of the sampled gas in this area, thereby further increasing the accuracy of NO detection in each area.

[0028] Example 2: Please refer to Figure 1-5 Unlike Example 1, the NO monitoring electrochemical sensor body 3 has a dust filter 31 installed on the upper inner side, a gas chamber 32 below the dust filter 31, a porous membrane 33 below the gas chamber 32, an electrolyte 34 stored below the porous membrane 33, a reservoir 35 below the electrolyte 34 via a partition, and a working electrode 36, an auxiliary electrode 37, a reference electrode 38, and a counter electrode 39 sequentially installed on the inner side of the middle of the electrolyte 34. The NO monitoring electrochemical sensor body 3 has pins 310 installed on both the left and right sides of its bottom. The upper left side of the IC integrated circuit board 4 has a power supply positive and negative input module 41, a signal amplification module 42, and a cyclic voltmeter. The ampere signal control module 43 and the electrical signal receiving, storage and calculation module 44, when the sampled gas enters the inside of the NO monitoring electrochemical sensor body 3, will filter the incoming gas through the dust filter 31, and then the filtered gas will enter the toxic gas chamber 32, and then enter the electrolyte 34 cavity through the porous membrane 33, and then enter the reservoir 35 through the working electrode 36, auxiliary electrode 37, reference electrode 38 and counter electrode 39. The following is a record of the entire process and detection results of the incoming sampled gas: through the IC integrated circuit board 4 and the power positive and negative input module 41 and signal amplification module 42 mounted on it, combined with the cyclic voltammetry electrical signal control module 43;

[0029] A cyclic voltammetric voltage is applied to the electrochemical sensor module; the electrochemical reduction peak potential of the monitored NO is recorded by the electrical signal receiving, storage, and calculation module 44. The concentration of the monitored NO can be calculated by inverting the linear relationship of the data; finally, the signal output circuit is connected to the signal transmission and communication link of the UAV, thus enabling visualization of NO monitoring data on the UAV flight control interface. The electrochemical sensor mainly utilizes electrochemical methods such as cyclic voltammetry, AC impedance spectroscopy, and current-time curves. The electrochemical output signal is directly linearly related to the concentration of the analyte. In this project, by applying a cyclic voltammetric voltage to the electrochemical sensor, NO reacts with the working electrode 36 when it is detected. In the selective catalytic reduction reaction, the electrochemical output electrical signal changes. The experimental results show that the NO reduction reaction peak on the working electrode 36 gradually increases with the increase of NO concentration: -0.63V (3000ppm) > -0.67V (2000ppm) > -0.69V (1500ppm) > -0.73V (1000ppm) > -0.76V (500ppm). Therefore, by setting up a cyclic voltammetry signal control module 43 and an electrical signal receiving, storage, and calculation module 44, the electrical signal conversion and storage can be realized in the internal integrated circuit to record the electrochemical reduction peak potential of the monitored NO. Through the linear relationship of the above data, the concentration of the monitored NO can be calculated.

[0030] Working principle: such as Figure 1-5 As shown, during use, when the UAV 1 flies into the designated area to sample and detect NO, the miniature electric telescopic rod 801 (model MNTL) is activated via the remote control button. This drives the drive rod 802 and the rack plate 805 on the upper right side to move quickly to the left a short distance. Simultaneously, this drives the transmission gear 1101a and the threaded rod 1101 to rotate, causing the valve plate 1102 and piston plate 1103 on the upper and lower outer sides of the threaded rod 1101 to move upwards. As the piston plate 1103 moves upwards, it works in conjunction with the square suction cylinder 9 and connecting pipe 10, causing the rubber gasket 1002 to deform upwards under the suction force. This effectively detects the NO. After the gas in the inner cavity of the chemical sensor body 3 is detected in the previous area, the residual gas is completely drawn into the inner side of the suction cylinder 9. Then, as the valve plate 1102 rises, it blocks the air inlet at the upper end of the connecting pipe 10. Furthermore, the gas drawn into the inner side of the suction cylinder 9 is discharged through the rise of the piston plate 1103 and the connection between the exhaust ports 1103a on the left and right sides and the upper breathing port 902. This structure can effectively avoid the problem that the residual gas in the inner side of the NO monitoring electrochemical sensor body 3 after the detection in the previous area mixes with the gas sampled in the next area, thus affecting the accuracy of concentration detection. This increases the accuracy of NO concentration detection in each area.

[0031] like Figure 1-4 As shown, when the inner cavity of the NO monitoring electrochemical sensor body 3 is in a vacuum state, the micro electric telescopic rod 801 is activated again by the remote control button, driving the drive rod 802 to move quickly and a large distance to the right. This causes the piston block 803 and the plug 804 to move to the left in conjunction with the air inlet on the upper left side of the NO monitoring electrochemical sensor body 3. At this time, the piston block 803 is located inside the left end of the air inlet, while the plug 804 is located outside the air inlet. Then, the micro electric telescopic rod 801 is activated by the remote control button, driving the drive rod 802 to move to the right inside the air inlet. This causes the piston block 803 to extract and sample the gas in this area and enter the inner cavity of the NO monitoring electrochemical sensor body 3. At this time, the piston block 803 has entered the inner cavity of the NO monitoring electrochemical sensor body 3, while the plug 804 remains inside the air inlet. This effectively enables closed-loop detection of the sampled gas in this area, thereby further increasing the accuracy of NO detection in each area.

[0032] like Figure 3 and Figure 6-7 As shown, when the sampled gas enters the inner side of the NO monitoring electrochemical sensor body 3, it is filtered by the dust filter 31. The filtered gas then enters the toxic gas chamber 32, passes through the porous membrane 33 into the electrolyte chamber 34, and then passes through the working electrode 36, auxiliary electrode 37, reference electrode 38, and counter electrode 39 into the reservoir 35. The following is a record of the entire process and results of the detection of the incoming sampled gas:

[0033] Through the IC integrated circuit board 4 and its onboard power positive and negative input module 41 and signal amplification module 42, combined with the cyclic voltammetry signal control module 43, a voltage with cyclic voltammetry characteristics is applied to the electrochemical sensor module; through the electrical signal receiving, storage and calculation module 44, the electrochemical reduction peak potential of the monitored NO is recorded, and the concentration of the monitored NO can be calculated by inverse calculation through the linear relationship of the data; finally, through the signal output circuit, it is connected to the signal transmission communication link of the UAV, so that the NO monitoring data can be visualized on the UAV flight control terminal interface;

[0034] Electrochemical sensors mainly utilize electrochemical methods such as cyclic voltammetry, AC impedance spectroscopy, and current-time curves. The electrochemical output signal is directly linearly related to the concentration of the analyte. In this project, by applying a voltage with cyclic voltammetry characteristics to the electrochemical sensor, when NO is detected, NO undergoes a selective catalytic reduction reaction with the working electrode 36, causing a change in the electrochemical output signal. Experimental results show that the NO reduction reaction peak on the working electrode 36 gradually increases with increasing NO concentration: -0.63V (3000ppm) > -0.67V (2000ppm) > -0.69V (1500ppm) > -0.73V (1000ppm) > -0.76V (500ppm). Therefore, by setting up a cyclic voltammetry signal control module 43 and an electrical signal receiving, storage, and calculation module 44, the internal integrated circuit realizes the electrical signal conversion and storage, recording the electrochemical reduction peak potential of the monitored NO. Through the linear relationship of the above data, the concentration of the monitored NO can be calculated. This is the working principle of this project, thereby completing a series of tasks.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A drone-mounted electrochemical sensor device for NO monitoring, comprising the drone body (1), characterized in that: The UAV body (1) is provided with a shell (2) on top, and the shell (2) is connected to the inside of the NO monitoring electrochemical sensor body (3). The bottom of the NO monitoring electrochemical sensor body (3) is equipped with an IC integrated circuit board (4), and the right side of the IC integrated circuit board (4) is connected to a power supply and signal output circuit (5). The bottom of the IC integrated circuit board (4) is provided with a base (6), and the bottom of the base (6) is equipped with a bracket (7) by screws. The top of the NO monitoring electrochemical sensor body (3) is fixed with a square suction cylinder (9), and the left and right sides of the suction cylinder (9) are connected with connecting pipes (10). The top of the inside of the NO monitoring electrochemical sensor body (3) is equipped with a drive mechanism (8) that can facilitate the start of the suction mechanism (11) and can also extract and sample the atmosphere of another area. The top of the NO monitoring electrochemical sensor body (3) is equipped with a suction mechanism (11) that can completely extract the nitrogen monoxide gas detected in the previous test on its inside side. The driving mechanism (8) includes a miniature electric telescopic rod (801) installed on the upper inner side of the NO monitoring electrochemical sensor body (3), and a driving rod (802) is welded to the left side of the miniature electric telescopic rod (801). A piston block (803) and a plug (804) are installed on the outer side of the left end of the driving rod (802), and a rack plate (805) is fixed on the upper right side of the driving rod (802). The suction mechanism (11) includes a threaded rod (1101) connected to the inner side of the suction cylinder (9) by a bearing, and a transmission gear (1101a) is welded to the outer side of the end of the threaded rod (1101). A valve plate (1102) is threaded to the lower outer side of the threaded rod (1101), and a piston plate (1103) is threaded to the outer side of the middle of the threaded rod (1101). Exhaust holes (1103a) are provided on both the left and right sides of the piston plate (1103). The piston block (803) and plug (804) are both connected in a sealed sliding manner to the through hole on the upper left side of the NO monitoring electrochemical sensor body (3); The outer sides of the valve plate (1102) and piston plate (1103) form a lifting and sliding structure with the inner wall of the air extraction cylinder (9); The outer side of the transmission gear (1101a) meshes with the rack plate (805).

2. The UAV-mounted NO monitoring electrochemical sensor device according to claim 1, characterized in that: A dust filter (31) is installed on the upper inner side of the NO monitoring electrochemical sensor body (3), and a gas chamber (32) is provided below the dust filter (31). A porous membrane (33) is installed below the gas chamber (32), and an electrolyte (34) is stored below the porous membrane (33). A reservoir (35) is provided below the electrolyte (34) through a partition. A working electrode (36), an auxiliary electrode (37), a reference electrode (38), and a counter electrode (39) are installed sequentially on the inner side of the middle of the electrolyte (34). Pins (310) are installed on both the left and right sides of the bottom of the NO monitoring electrochemical sensor body (3).

3. The UAV-mounted NO monitoring electrochemical sensor device according to claim 1, characterized in that: The IC integrated circuit board (4) is provided with a power positive and negative input module (41), a signal amplification module (42), a cyclic volt-ampere electrical signal control module (43), and an electrical signal receiving, storage, and calculation module (44) on the upper left side.

4. The UAV-mounted NO monitoring electrochemical sensor device according to claim 1, characterized in that: The lower breathing hole (901) is provided on both the left and right sides of the air pump (9), and the upper breathing hole (902) is provided on both the left and right sides of the air pump (9).

5. The UAV-mounted NO monitoring electrochemical sensor device according to claim 1, characterized in that: A cross-shaped connecting plate (1001) is fixed to the inner side of the lower end of the connecting pipe (10), and a rubber gasket (1002) is provided above the cross-shaped connecting plate (1001).

6. The UAV-mounted NO monitoring electrochemical sensor device according to claim 5, characterized in that: The rubber gasket (1002) is fixedly connected to the cross connecting plate (1001) in the middle, and the bottom of the outer ring of the rubber gasket (1002) is in contact with the top surface of the outer ring of the cross connecting plate (1001). The rubber gasket (1002) is thin on the outside and thick on the inside.

Images