A comprehensive photosynthetic measurement device for plant populations under high temperature and drought conditions

Abstract

The present invention relates to the field of agricultural and forestry plant monitoring technology, and in particular to a photosynthetic comprehensive measurement device for plant populations under high temperature and drought conditions. Aiming at the problem that the photosynthetic comprehensive measurement device for plant populations in the prior art cannot timely clean the dust on the outer wall of the isolation cover and prevent rain from affecting the internal ecological environment of the isolation cover, the following scheme is proposed, which includes an isolation cover, a rain shielding mechanism installed on the top of the isolation cover, and a humidifying mechanism installed inside the isolation cover, wherein the top and bottom of the isolation cover are both provided with openings, and the top caliber is smaller than the bottom caliber. The present invention can not only conveniently clean the dust on the outer surface of the isolation cover, but also timely cover the top opening of the isolation cover in the case of rain, and can also conveniently humidify or replace the air in the isolation cover according to experimental needs, which greatly facilitates the use of experimenters.

Description

Technical Field

[0001] The invention relates to the field of agricultural and forestry plant monitoring, and in particular to a photosynthetic comprehensive measurement device for plant populations under high temperature and drought conditions. Background Art

[0002] The frequent occurrence of extreme weather such as high temperature and drought caused by global warming has had a profound impact on farmland ecosystems. Under controllable experimental conditions, effectively simulating climate warming and revealing the effects of high temperature and drought on farmland ecosystems are of great scientific significance for understanding the mechanism of global warming and its impact. The high temperature and drought experiment of ecosystems under natural conditions is a major method for studying the relationship between global warming and farmland ecosystems. Its research results can provide key parameter estimates for model prediction and verification.

[0003] Since a separate experimental environment needs to be simulated, an isolation cover is needed to isolate the plants from the external environment, so that the space inside the isolation cover becomes an independent growth environment, and then the purpose of the experiment is achieved by changing the growth conditions in the environment. However, because the experimental environment is outdoors and the growth of plants is inseparable from light, long-term exposure to the natural environment will cause dust to adhere to the outer wall of the isolation cover, thereby affecting the light transmittance. In addition, in order to prevent rain from damaging the growth environment inside the isolation cover, it is also necessary to prevent rainwater from entering the isolation cover in time. For this reason, this scheme proposes a comprehensive photosynthetic measurement device for plant groups under high temperature and drought conditions. Summary of the invention

[0004] The invention provides a comprehensive measurement device for photosynthesis of plant groups under high temperature and drought conditions, which solves the problem that the comprehensive measurement device for photosynthesis of plant groups in the prior art cannot clean the dust on the outer wall of the isolation cover in time and prevent rain from affecting the ecological environment inside the isolation cover.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A photosynthetic comprehensive measurement device for a plant population under high temperature and drought conditions, comprising an isolation cover, a rain shielding mechanism installed on the top of the isolation cover, and a humidifying mechanism installed inside the isolation cover, the isolation cover is provided with openings on the top and bottom, and the top opening is smaller than the bottom opening, a mounting ring coaxially arranged therewith is rotatably connected to the inner side wall of the top opening of the isolation cover, a cleaning assembly for cleaning dust on the outer surface of the isolation cover is installed on the mounting ring, a mounting plate is fixed on the inner wall of the isolation cover, the rain shielding mechanism comprises a fixed shaft rotatably connected to the top of the mounting plate, a fixed cylinder movably sleeved outside the fixed shaft, and an umbrella-shaped canopy installed on the fixed cylinder, a driving assembly is installed on the mounting plate for opening or closing the canopy, the diameter of the bottom surface of the canopy is larger than the opening of the vent, and the canopy is located on the top of the vent;

[0007] The cleaning assembly includes a transition pipe fixed to the top of the mounting ring and a fixed water pipe installed at one end of the transition pipe, the fixed water pipe is located outside the isolation cover, and a plurality of nozzles facing the outer surface of the isolation cover are installed on the side wall of the fixed water pipe;

[0008] The humidifying mechanism comprises a sleeve rotatably connected to the top of the mounting plate, a fixing rod fixed to the outer periphery of the sleeve, a water outlet pipe installed on the fixing rod and a water tank installed in the isolation cover, the sleeve is located outside the fixing shaft and is coaxially arranged therewith, the bottom of the mounting ring is fixedly connected to the fixing rod through a connecting rod, a plurality of atomizing nozzles are installed on the bottom surface of the water outlet pipe, a combination pipe connected to the water tank is installed on the bottom surface of the mounting plate, and the combination pipe is connected to the water outlet pipe and the transition pipe, and a power mechanism is also installed on the mounting plate;

[0009] The power mechanism comprises a transmission component for driving the sleeve to rotate and a water delivery component for delivering the water in the water tank to the water outlet pipe and the fixed water pipe through the combined pipe.

[0010] Through the above technical scheme, not only can the dust on the outer surface of the isolation cover be cleaned conveniently, but also the top opening of the isolation cover can be covered in time when it rains. At the same time, the air in the isolation cover can be humidified or replaced conveniently according to the experimental needs, which greatly facilitates the use of the experimenters.

[0011] As a further improvement of the above scheme, the driving assembly includes a positioning ring 1, a positioning ring 2, a movable sleeve, and an adjusting member for driving the fixed cylinder to rise and fall. The positioning ring 1 is located below the positioning ring 2, the movable sleeve is located between the positioning ring 1 and the positioning ring 2, and the outer periphery of the movable sleeve is hinged with multiple connecting rods, the other ends of the multiple connecting rods are hinged with the inner wall of the canopy, and a slide groove arranged along the axial direction is opened on the outer wall of the fixed cylinder. The inner rings of the positioning ring 1 and the positioning block 2 are fixed with connecting blocks, and the other ends of the two connecting blocks pass through the slide groove and are fixedly connected to the outer wall of the fixed shaft. The adjusting member includes a rainfall sensor installed on the top of the canopy, an electric telescopic rod installed on the top of the mounting plate, and an electric control box installed on the inner side of the isolation cover. The output end of the electric telescopic rod is fixedly connected to the outer wall of the fixed cylinder, a single-chip microcomputer and a data transceiver are installed in the electric control box, and the input end of the electric telescopic rod is electrically connected to the output end of the single-chip microcomputer.

[0012] Through the above technical solution, the awning can be opened in time when it rains, so as to prevent rainwater from entering the isolation cover, and the awning can be folded up after the rain stops to ensure the circulation of air inside and outside the isolation cover.

[0013] As a further improvement of the above scheme, the transmission assembly includes a motor installed on the top of the mounting plate, a rotating wheel installed at one end of the motor output shaft, a fixed frame slidably connected to the top of the mounting plate, a transmission rack fixed on the outer wall of one side of the fixed frame, and a transmission gear sleeved on the outside of the sleeve. The input end of the motor is electrically connected to the output end of the single-chip microcomputer, the transmission gear is meshed with the transmission rack, the length of the inner long side of the fixed frame is greater than the diameter of the rotating wheel, and a toggle column is fixed at a position deviating from the center of the circular surface of the rotating wheel away from the motor output shaft, and one end of the toggle column extends to the inside of the fixed frame.

[0014] Through the above technical solution, the fixed water pipe and the water outlet pipe can be driven to rotate with the sleeve as the rotation center, so that the dust outside the isolation cover can be cleaned more thoroughly and the air in the isolation cover can be humidified more evenly.

[0015] As a further improvement of the above scheme, the water delivery assembly includes a piston cylinder with an open structure at one end installed on the top of the mounting plate, an air inlet pipe and an air outlet pipe installed on the other end of the piston cylinder, a piston plate coaxially arranged therewith is installed in the piston cylinder, a piston rod is fixed on one side of the piston plate, and the other end of the piston rod is fixedly connected to the outer wall of the fixed frame, a one-way valve 1 is installed on the air inlet pipe, and one end of the air inlet pipe extends to the outside of the isolation cover, a one-way valve 2 is installed on the air outlet pipe, and a fixed pipe is fixed on the other end of the air outlet pipe, an air delivery pipe connected to the water tank is installed on the fixed pipe, and an electromagnetic valve 1 is installed on the air delivery pipe, the combined pipe includes a water delivery pipe installed on the bottom surface of the mounting plate and a water inlet pipe installed at one end of the water delivery pipe, the other end of the water inlet pipe extends into the water tank, the other end of the water inlet pipe is connected to a connecting pipe, the other end of the connecting pipe is fixed and connected to the transition pipe, an electromagnetic valve 2 is installed on the connecting pipe, one end of the water outlet pipe is fixed on the outer wall of the connecting pipe and connected to the connecting pipe, and an electromagnetic valve 3 is installed on the water outlet pipe.

[0016] Through the above technical scheme, the air outside the isolation cover can be continuously sucked into the piston cylinder while the transmission component is working, and then the destination of the air in the piston cylinder can be allocated according to specific needs. When the air enters the water tank, the pressure in the water tank can be increased, so that the air in the water tank can enter the fixed water pipe or the water outlet pipe through the combined pipe. After the air enters the ventilation pipe, the outside air can be directly input into the inside of the isolation cover, thereby replacing the air in the isolation cover.

[0017] As a further improvement of the above solution, a ventilation pipe is fixed on the fixed pipe, a solenoid valve four is installed on the ventilation pipe, and a plurality of exhaust pipes are installed on the periphery of the ventilation pipe from top to bottom.

[0018] Through the above technical solution, when it is necessary to replace the air in the isolation cover, the outside air can be easily input into the isolation cover through the movement of the piston cylinder.

[0019] As a further improvement of the above scheme, the top opening and the bottom opening of the isolation cover are both regular hexagonal structures, and an entrance and exit are opened on the side wall of the isolation cover, and a movable door is installed on one side of the entrance and exit. A camera is installed on the bottom surface of the mounting plate, and the camera is electrically connected to the data transceiver device and the single-chip microcomputer.

[0020] Through the above technical scheme, a design with regular hexagonal openings on the top and bottom and a top surface smaller than the bottom surface is adopted. This fully takes into account the environmental characteristics of open areas where plants are short, wind speeds are high, and light is strong. It can accurately simulate the warming process of plant growth. The setting of the camera makes it easy for experimenters to observe the growth conditions of plants in the isolation cover at all times.

[0021] As a further improvement of the above scheme, it also includes a planting barrel, which is buried underground and located on the inner side of the isolation cover. A plurality of seepage pipes are installed on the side wall of the planting barrel. A soil moisture sensor is installed in the planting barrel, and the output end of the soil moisture sensor is electrically connected to the input end of the data transceiver device. A weighing assembly is installed at the bottom of the planting barrel.

[0022] Through the above technical solution, the soil near the plant analysis can be separated from other soils, thereby ensuring that the plants meet the standards of experimental conditions and making it easier for experimenters to adjust the moisture of the soil.

[0023] As a further improvement of the above solution, the weighing assembly includes a base, a membrane box tray sensor installed on the top of the base, and a tray installed on the top of the membrane box tray sensor, and the tray is fixed to the bottom surface of the planting barrel.

[0024] Through the above technical solution, the weight change of the planting tube 35 can be recorded, thereby helping the experimenter to know the evaporation situation during the growth of the plant.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Through the setting of the driving component, when the rain sensor detects rain, a signal can be sent to the single-chip microcomputer, and the single-chip microcomputer controls the electric telescopic rod to retract, thereby gradually opening the awning while driving the fixed cylinder to descend, so that the top opening of the isolation cover can be covered to prevent outside rainwater from entering the isolation cover.

[0027] 2. Through the setting of the transmission component, the sleeve can be driven to rotate reciprocally, and the piston rod can also be driven to move reciprocally, so that the fixed water pipe and the water outlet pipe can be driven to rotate reciprocally with the sleeve as the rotation center, while continuously sucking the outside air into the piston cylinder, and then discharged from the piston cylinder. After the air discharged from the piston cylinder enters the water tank, the pressure in the water tank will increase, so that when the solenoid valve 2 is opened, the water in the water tank can enter the fixed water pipe, and finally the water is sprayed from the nozzle onto the outer wall of the isolation cover, thereby cleaning the dust and dirt on the surface of the isolation cover. When the solenoid valve 2 is closed and the solenoid valve 3 is opened, the water in the water tank can enter the water outlet pipe, and finally sprayed from the nozzle to humidify the air in the isolation cover, thereby increasing the air humidity in the isolation cover.

[0028] 3. Through the setting of the ventilation pipe, when the solenoid valve 1 is closed and the solenoid valve 4 is opened, the air in the piston cylinder can be discharged through the multiple exhaust pipes on the ventilation pipe, so that the air in the isolation cover can be ventilated. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A perspective view of the present invention;

[0030] Figure 2 It is a front cross-sectional view of the present invention;

[0031] Figure 3 for Figure 2 Schematic diagram of the structure when the middle canopy is opened;

[0032] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0033] Figure 5 for Figure 3 Schematic diagram of the structure of the power mechanism;

[0034] Figure 6 for Figure 2 Schematic diagram of the structure when the mid-level canopy is folded.

[0035] Description of main symbols:

[0036] 1. Isolation cover; 2. Canopy; 3. Rain sensor; 4. Movable door; 5. Fixed water pipe; 6. Nozzle; 7. Connecting rod; 8. Fixed cylinder; 9. Fixed shaft; 10. Positioning ring 1; 11. Movable sleeve; 12. Positioning ring 2; 13. Electric telescopic rod; 14. Mounting ring; 15. Piston cylinder; 16. Inlet pipe; 17. Outlet pipe; 18. Fixed pipe; 19. Camera; 20. Mounting plate; 21. Rotating wheel; 22. Sleeve; 23. Water pipe; 24. Inlet pipe ; 25. Gas pipe; 26. Ventilation pipe; 27. Water tank; 28. Fixed rod; 29. ​​Water outlet pipe; 30. Electric control box; 31. Water bucket; 32. Tray; 33. Membrane box tray sensor; 34. Base; 35. Planting barrel; 36. Soil moisture sensor; 37. Seepage pipe; 38. Transition pipe; 39. Slide; 40. Limiting ring; 41. Connecting pipe; 42. Transmission rack; 43. Fixed frame; 44. Transmission gear; 45. Fixed ring; 46. Piston rod. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0038] Example 1

[0039] Please combine Figure 1-6 , a photosynthetic comprehensive measurement device for a plant population under high temperature and drought conditions of the present embodiment comprises an isolation cover 1, a rain shielding mechanism installed on the top of the isolation cover 1, and a humidifying mechanism installed inside the isolation cover 1, the isolation cover 1 is provided with openings at the top and bottom, and the top diameter is smaller than the bottom diameter, a mounting ring 14 coaxially arranged therewith is rotatably connected to the inner side wall of the top opening of the isolation cover 1, a cleaning assembly for cleaning dust on the outer surface of the isolation cover 1 is installed on the mounting ring 14, the cleaning assembly comprises a transition pipe 38 fixed to the top of the mounting ring 14 and a fixed water pipe 5 installed at one end of the transition pipe 38, the fixed water pipe 5 is located outside the isolation cover 1, and a plurality of nozzles 6 arranged facing the outer surface of the isolation cover 1 are installed on the side wall of the fixed water pipe 5, and the nozzles 6 spray water on the outer surface of the isolation cover 1 during the rotation of the fixed water pipe 5 around the outer wall of the isolation cover 1, so that the dust attached to the outer surface of the isolation cover 1 can be washed away.

[0040] A mounting plate 20 is fixed on the inner wall of the isolation cover 1, and the rainproof mechanism includes a fixed shaft 9 rotatably connected to the top of the mounting plate 20, a fixed cylinder 8 movably sleeved on the outside of the fixed shaft 9, and an umbrella-shaped canopy 2 installed on the fixed cylinder 8. A driving component is installed on the mounting plate 20 for opening or closing the canopy 2. The diameter of the bottom surface of the canopy 2 is larger than the caliber of the vent, and the canopy 2 is located at the top of the vent. The driving component includes a positioning ring 10 movably sleeved on the outside of the fixed cylinder 8, a positioning ring 2 12, a movable sleeve 11 movably sleeved on the outside of the fixed cylinder 8, and an adjusting member for driving the fixed cylinder 8 to rise and fall. The positioning ring 10 is located below the positioning ring 2 12, the movable sleeve 11 is located between the positioning ring 10 and the positioning ring 2, and a plurality of connecting rods 7 are hinged on the outer periphery of the movable sleeve 11, and the other ends of the plurality of connecting rods 7 are hinged to the inner wall of the canopy 2, a spring is connected between the top of the movable sleeve 11 and the bottom of the positioning ring 12, and the spring sleeve is arranged on the fixed On the outside of the cylinder 8, a slide groove 39 is provided on the outer wall of the fixed cylinder 8 along its axial direction. The inner circles of the positioning ring 10 and the positioning block 2 12 are fixed with connecting blocks. The other ends of the two connecting blocks pass through the slide groove 39 and are fixedly connected to the outer wall of the fixed shaft 9. The adjusting member includes a rain sensor 3 installed on the top of the canopy 2, an electric telescopic rod 13 installed on the top of the mounting plate 20, and an electric control box 30 installed on the inner side of the isolation cover 1. The output end of the electric telescopic rod 13 is fixedly connected to the outer wall of the fixed cylinder 8. A single-chip microcomputer and a data transceiver are installed in the electric control box 30. The single-chip microcomputer model is MCS-80960. The input end of the electric telescopic rod 13 is electrically connected to the output end of the single-chip microcomputer. The rain sensor is used to detect whether it is raining outside. When it rains, a signal is sent to the single-chip microcomputer, and the single-chip microcomputer is used to control the electric telescopic rod 13 to retract, thereby opening the canopy 2. On the contrary, after the rain stops, the electric telescopic rod 13 is extended, and the canopy 3 is also closed.

[0041] An air humidity sensor is installed on the inner wall of the isolation cover 1, and the output end of the air humidity sensor is electrically connected to the input end of the single-chip microcomputer and the input end of the data transceiver device. The humidification mechanism includes a sleeve 22 rotatably connected to the top of the mounting plate 20, a fixed rod 28 fixed to the outer periphery of the sleeve 22, a water outlet pipe 29 installed on the fixed rod 28, and a water tank 27 installed in the isolation cover 1. The sleeve 22 is located outside the fixed shaft 9 and is coaxially arranged therewith. The bottom of the mounting ring 14 is fixedly connected to the fixed rod 28 through a connecting rod. A plurality of atomizing spray nozzles are installed on the bottom surface of the water outlet pipe 29. The bottom surface of the mounting plate 20 is provided with a combined pipe connected to the water tank 27, and the combined pipe is connected to the water outlet pipe 29 and the transition pipe 38. A power mechanism is also installed on the mounting plate 20, and the power mechanism includes a transmission assembly for driving the sleeve 22 to rotate and a water delivery assembly for delivering the water in the water tank 27 to the water outlet pipe 29 and the fixed water pipe 5 through the combined pipe. The transmission assembly includes a motor installed on the top of the mounting plate 20, a runner 21 installed at one end of the motor output shaft, a fixed frame 43 slidably connected to the top of the mounting plate 20, and an outer frame 43 fixed on one side of the fixed frame 43. The transmission rack 42 on the wall and the transmission gear 44 sleeved on the outside of the sleeve 22, the input end of the motor is electrically connected to the output end of the single-chip microcomputer, the transmission gear 44 is meshed with the transmission rack 42, the length of the inner long side of the fixed frame 43 is greater than the diameter of the rotating wheel 21, and a toggle column is fixed at a position deviating from the center of the circular surface of the rotating wheel 21 away from the motor output shaft, and one end of the toggle column extends to the inside of the fixed frame 43. The fixed frame 43 is driven to move back and forth on the top of the mounting plate 20 through the rotation of the rotating wheel, thereby driving the sleeve 22 to rotate back and forth. The angle of rotation of the sleeve 22 The degree is 350 degrees to prevent the electric telescopic rod 13 from being touched by the fixed rod 28 following the sleeve 22. The humidity in the air in the isolation cover is monitored at all times by the humidity sensor, and the data transceiver transmits the data through the 5G network. When the humidity of the air in the isolation cover needs to be increased, the power component can be started to transport the water in the water tank 27 to the water outlet pipe 29, and during the water delivery process, the water outlet pipe 29 can be driven to reciprocate with the sleeve 22 as the rotation center, so that the water can be sprayed more evenly to increase the humidity.

[0042] The water delivery assembly includes a piston cylinder 15 with an open end installed on the top of the mounting plate 20, an air inlet pipe 16 and an air outlet pipe 17 installed on the other end of the piston cylinder 15, a piston plate coaxially arranged therewith is installed in the piston cylinder 15, a piston rod 46 is fixed on one side of the piston plate, and the other end of the piston rod 46 is fixedly connected to the outer wall of the fixed frame 43, a one-way valve 1 is installed on the air inlet pipe 16, and one end of the air inlet pipe 16 extends to the outside of the isolation cover 1, a one-way valve 2 is installed on the air outlet pipe 17, and the air outlet pipe 1 The other end of the fixing pipe 18 is fixed, and the fixing pipe 18 is installed with an air pipe 25 connected with the water tank 27, and the air pipe 25 is installed with a solenoid valve 1. The combined pipe includes a water pipe 23 installed on the bottom surface of the mounting plate 20 and a water inlet pipe 24 installed at one end of the water pipe 23. The other end of the water inlet pipe 24 extends into the water tank 27. The other end of the water inlet pipe 24 is connected with a connecting pipe 41. The other end of the connecting pipe 41 is fixed and connected with the transition pipe 38. The connecting pipe 41 is installed with a solenoid valve 2. The water outlet pipe 2 One end of 9 is fixed on the outer wall of the connecting pipe 41 and is connected to the connecting pipe 41, and a solenoid valve 3 is installed on the water outlet pipe 29, a ventilation pipe 26 is fixed on the fixed pipe 18, a solenoid valve 4 is installed on the ventilation pipe 26, and a plurality of exhaust pipes are installed on the outer periphery of the ventilation pipe 26 from top to bottom. When the rotating wheel 21 rotates, it will drive the piston rod to move back and forth along the axial direction of the piston cylinder 15, so that the outside air can be sucked into the piston cylinder 15, and then squeezed by the piston plate and discharged to the inside of the outlet pipe 17, and then Then it enters the fixed pipe 18 through the air outlet pipe 17, and the air entering the fixed pipe 18 can enter the water tank 27 alone through the air supply pipe 25, thereby enhancing the pressure in the water tank 27, so that the water in the water tank 27 is pressed out and enters the water inlet pipe 24, and finally achieves the purpose of delivering water to the water outlet pipe 29 and the fixed water pipe 25. In addition, the air entering the fixed pipe 18 can also enter the internal device of the ventilation pipe 26 alone, thereby realizing the replacement of the air in the isolation cover 1.

[0043] The top opening and the bottom opening of the isolation cover 1 are both regular hexagonal structures, and an entrance and exit are opened on the side wall of the isolation cover 1, and a movable door 4 is installed on one side of the entrance and exit. The isolation cover 1 and the canopy 2 are both made of transparent materials. A camera 19 is installed on the bottom surface of the mounting plate 20. The camera 19 is electrically connected to the data transceiver and the single-chip microcomputer. The design adopts regular hexagonal openings on the top and bottom and the top surface is smaller than the bottom surface. It fully takes into account the environmental characteristics of open areas with low plants, high wind speed and strong light, and can accurately simulate the warming process of plant growth. The setting of the camera 19 can facilitate the experimenters to observe the growth status of the plants in the isolation cover at all times.

[0044] The implementation principle of this embodiment is as follows: the isolation cover 1 is set outside the plant to be observed. When it rains, the rain sensor 3 detects the rain and sends a signal to the data transceiver. The data transceiver sends the command to the single-chip microcomputer. The single-chip microcomputer starts the electric telescopic rod 13 to contract. The electric telescopic rod contracts and drives the fixed cylinder 8 to descend. When the movable sleeve 11 touches the positioning ring 10, as the fixed cylinder 8 continues to descend, the movable sleeve 11 moves up relative to the fixed cylinder 8, and the spring is compressed, and the canopy 2 is also stretched out. Until the canopy 2 is fully opened, the top opening of the canopy 2 is covered, thereby effectively preventing rainwater from entering the isolation cover 1. When the rain stops, the rain sensor 3 sends a signal to the data transceiver, and then the electric telescopic rod 12 is extended again, so that the fixed cylinder 8 starts to rise, the spring is gradually expanded, and the movable sleeve 11 is also moved down relative to the fixed cylinder 8, so that the canopy can be gradually folded up.

[0045] When it is necessary to clean the dust on the outer surface of the isolation cover 1, the experimenter can send the command to the data transceiver through the network, and then the data transceiver starts the motor through the single chip microcomputer, and at the same time, the solenoid valve 1 and the solenoid valve 2 are opened, and the solenoid valve 3 and the solenoid valve 4 are closed. After the motor is started, it drives the rotating wheel 21 to rotate. After the rotating wheel 21 rotates, it drives the transmission rack 42 and the piston rod 46 to move back and forth synchronously. After the piston rod 4 moves, it will drive the piston plate to move synchronously, so that the outside air can be sucked into the piston cylinder 15 in the process of the piston plate approaching the rotating wheel 21, and then the air in the piston cylinder 15 can be discharged through the air outlet pipe 17 in the process of the piston plate moving away from the rotating wheel 21. Then the air enters the fixed pipe 18 through the air outlet pipe 17. When the solenoid valve 1 is opened and the solenoid valve 4 is closed, the air in the fixed pipe 18 enters the water tank 27 through the air supply pipe 25, thereby increasing the pressure in the water tank 2. As the motor continues to rotate, the air is continuously transported to the inside of the water tank 2, so that the water in the water tank 27 can be at a pressure of Under the action, the water enters the water inlet pipe 24, and then enters the water delivery pipe 23. After that, when the solenoid valve 3 is closed and the solenoid valve 2 is opened, the water in the connecting pipe enters the transition pipe 38, and then enters the fixed water pipe 5. Finally, the water is sprayed from the nozzle 6 and hits the surface of the isolation cover 1. In the process of the transmission rack 42 following the reciprocating movement of the fixed frame 43, the sleeve 22 is continuously driven to reciprocate, so that the fixed rod 28 rotates with it. After the fixed rod 28 rotates, it will drive the limit ring 40 to rotate with the sleeve 2 2 is the rotation center, so that the nozzle 6 can rotate around the surface of the isolation cover 1 continuously during the water spraying process, so as to remove the dust on the surface of the isolation cover 1. When the air in the isolation cover needs to be humidified, the solenoid valve 1 and the solenoid valve 3 can be opened when the power mechanism is started, and the solenoid valve 2 and the solenoid valve 4 can be closed, so that the water in the water tank 27 can enter the inner part of the water outlet pipe 29 through the connecting pipe 23, and finally sprayed out from the atomizing nozzle 29, so as to humidify the air in the isolation cover 1;

[0046] When only the air in the isolation cover 1 needs to be replaced, the solenoid valves 1, 2 and 3 are all closed, and the solenoid valve 4 is opened. After the power mechanism is started, the outside air enters the ventilation pipe 26 through the transfer of the piston cylinder 15, and is finally discharged from the multiple exhaust pipes on the ventilation pipe, thereby achieving the purpose of replacing the air.

[0047] Example 2

[0048] Combination Figure 2The present embodiment is further improved on the basis of the embodiment 1 in that it also includes a planting barrel 35, the planting barrel 35 is buried underground, and the planting barrel is located on the inner side of the isolation cover 1, a plurality of seepage pipes 37 are installed on the side wall of the planting barrel 35, and the plurality of seepage pipes 37 are arranged in sequence from top to bottom, a soil moisture sensor 36 is installed in the planting barrel 35, and the output end of the soil moisture sensor 36 is electrically connected to the input end of the data transceiver device, a weighing assembly is installed at the bottom of the planting barrel 35, and the weighing assembly includes a base 34, a membrane box tray sensor 33 installed on the top of the base 34, and a membrane box tray sensor installed on the bottom of the membrane box tray sensor. The tray 32 on the top of 33, the output end of the membrane box tray sensor 33 is electrically connected to the input end of the data transceiver device, the tray 32 is fixed on the bottom of the planting barrel 35, and a planting pit for placing the planting barrel 35 is dug on the bottom surface before planting, and the top of the planting barrel 35 is made flush with the bottom surface, and then a water bucket 31 is placed in the planting pit. The water bucket 31 is located directly below a plurality of seepage pipes 37 and is used to receive the water extending from the seepage pipes 37. A micro water pump is installed in the water bucket 31, and the outlet pipe of the water pump is placed on the bottom surface. The input end of the water pump is electrically connected to the output end of the single-chip microcomputer, and can be started and stopped under the command of the single-chip microcomputer.

[0049] The working principle of this embodiment is: when planting the plants to be observed, first dig a planting hole on the bottom surface, and then place the planting barrel and the weighing assembly in the planting hole. The soil moisture sensor 36 can detect the moisture content in the soil in the planting tube 35, so that water can be replenished in time when there is a lack of water. The membrane box tray sensor 33 can record the weight change of the planting tube 35, which helps the experimenter to understand the evaporation situation during the growth of the plant.

[0050] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A photosynthetic comprehensive measurement device for plant populations under high temperature and drought conditions, comprising an isolation cover, a rain shielding mechanism installed on the top of the isolation cover, and a humidifying mechanism installed inside the isolation cover, characterized in that: The top and bottom of the isolation cover are both provided with openings, and the top diameter is smaller than the bottom diameter. A mounting ring coaxially arranged therewith is rotatably connected to the inner side wall of the top opening of the isolation cover, and a cleaning assembly for cleaning dust on the outer surface of the isolation cover is installed on the mounting ring. A mounting plate is fixed on the inner wall of the isolation cover. The rain shielding mechanism comprises a fixed shaft rotatably connected to the top of the mounting plate, a fixed cylinder movably sleeved outside the fixed shaft, and an umbrella-shaped canopy installed on the fixed cylinder. A driving assembly is installed on the mounting plate for opening or closing the canopy. The diameter of the bottom surface of the canopy is larger than the diameter of the vent, and the canopy is located at the top of the vent. The cleaning assembly includes a transition pipe fixed to the top of the mounting ring and a fixed water pipe installed at one end of the transition pipe, the fixed water pipe is located outside the isolation cover, and a plurality of nozzles facing the outer surface of the isolation cover are installed on the side wall of the fixed water pipe; The humidifying mechanism comprises a sleeve rotatably connected to the top of the mounting plate, a fixing rod fixed to the outer periphery of the sleeve, a water outlet pipe installed on the fixing rod and a water tank installed in the isolation cover, the sleeve is located outside the fixing shaft and is coaxially arranged therewith, the bottom of the mounting ring is fixedly connected to the fixing rod through a connecting rod, a plurality of atomizing nozzles are installed on the bottom surface of the water outlet pipe, a combination pipe connected to the water tank is installed on the bottom surface of the mounting plate, and the combination pipe is connected to the water outlet pipe and the transition pipe, and a power mechanism is also installed on the mounting plate; The power mechanism includes a transmission assembly for driving the sleeve to rotate and a water delivery assembly for delivering water in the water tank to the water outlet pipe and the fixed water pipe through the combined pipe; The driving assembly includes a positioning ring 1, a positioning ring 2, a movable sleeve arranged outside the fixed cylinder, and an adjusting member for driving the fixed cylinder to rise and fall. The positioning ring 1 is located below the positioning ring 2, the movable sleeve is located between the positioning ring 1 and the positioning ring 2, and a plurality of connecting rods are hinged on the outer periphery of the movable sleeve, the other ends of the plurality of connecting rods are hinged to the inner wall of the canopy, a slide groove arranged along the axial direction thereof is provided on the outer wall of the fixed cylinder, the inner rings of the positioning ring 1 and the positioning block 2 are fixed with connecting blocks, the other ends of the two connecting blocks pass through the slide groove and are fixedly connected to the outer wall of the fixed shaft, the adjusting member includes a rainfall sensor installed on the top of the canopy, an electric telescopic rod installed on the top of the mounting plate, and an electric control box installed on the inner side of the isolation cover, the output end of the electric telescopic rod is fixedly connected to the outer wall of the fixed cylinder, a single-chip microcomputer and a data transceiver are installed in the electric control box, and the input end of the electric telescopic rod is electrically connected to the output end of the single-chip microcomputer; The transmission assembly includes a motor mounted on the top of the mounting plate, a rotating wheel mounted on one end of the motor output shaft, a fixed frame slidably connected to the top of the mounting plate, a transmission rack fixed on the outer wall of one side of the fixed frame, and a transmission gear sleeved on the outside of the sleeve, the input end of the motor is electrically connected to the output end of the single-chip microcomputer, the transmission gear is meshed with the transmission rack, the length of the inner long side of the fixed frame is greater than the diameter of the rotating wheel, a toggle column is fixed at a position deviating from the center of the circular surface of the rotating wheel away from the motor output shaft, and one end of the toggle column extends to the inner side of the fixed frame; The water delivery assembly includes a piston cylinder with an open structure at one end installed on the top of the mounting plate, an air inlet pipe and an air outlet pipe installed on the other end of the piston cylinder, a piston plate coaxially arranged therewith is installed in the piston cylinder, a piston rod is fixed on one side of the piston plate, and the other end of the piston rod is fixedly connected to the outer wall of the fixed frame, a one-way valve 1 is installed on the air inlet pipe, and one end of the air inlet pipe extends to the outside of the isolation cover, a one-way valve 2 is installed on the air outlet pipe, and a fixed pipe is fixed on the other end of the air outlet pipe, an air delivery pipe connected to the water tank is installed on the fixed pipe, and an electromagnetic valve 1 is installed on the air delivery pipe, the combined pipe includes a water delivery pipe installed on the bottom surface of the mounting plate and a water inlet pipe installed at one end of the water delivery pipe, the other end of the water inlet pipe extends into the water tank, the other end of the water inlet pipe is connected to a connecting pipe, the other end of the connecting pipe is fixed and connected to a transition pipe, an electromagnetic valve 2 is installed on the connecting pipe, one end of the water outlet pipe is fixed on the outer wall of the connecting pipe and connected to the connecting pipe, and an electromagnetic valve 3 is installed on the water outlet pipe.

2. The device for comprehensive measurement of photosynthesis of plant populations under high temperature and drought conditions according to claim 1, characterized in that: A ventilation pipe is fixed on the fixed pipe, a solenoid valve four is installed on the ventilation pipe, and a plurality of exhaust pipes are installed on the periphery of the ventilation pipe from top to bottom.

3. The device for comprehensive measurement of photosynthesis of plant populations under high temperature and drought conditions according to claim 1, characterized in that: The top opening and the bottom opening of the isolation cover are both regular hexagonal structures, and an entrance and exit are opened on the side wall of the isolation cover, and a movable door is installed on one side of the entrance and exit. A camera is installed on the bottom surface of the installation plate, and the camera is electrically connected to the data transceiver and the single-chip microcomputer.

4. The device for comprehensive measurement of photosynthesis of plant populations under high temperature and drought conditions according to claim 1, characterized in that: It also includes a planting barrel, which is buried underground and located on the inner side of the isolation cover. A plurality of seepage pipes are installed on the side wall of the planting barrel. A soil moisture sensor is installed in the planting barrel, and the output end of the soil moisture sensor is electrically connected to the input end of the data transceiver device. A weighing component is installed at the bottom of the planting barrel.

5. The device for comprehensive measurement of photosynthesis of plant populations under high temperature and drought conditions according to claim 4, characterized in that: The weighing assembly comprises a base, a membrane box type tray sensor installed on the top of the base, and a tray installed on the top of the membrane box type tray sensor, and the tray is fixed on the bottom surface of the planting barrel.

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