Regional agricultural water resource fixed-point monitoring and sampling equipment

Abstract

The invention discloses regional agricultural water resource fixed-point monitoring and sampling equipment, and relates to the field of water flow velocity measurement, and the regional agricultural water resource fixed-point monitoring equipment comprises a floating plate, the lower side of the floating plate is fixedly connected with a buoyancy air bag, and the lower side of the floating plate is fixedly connected with a water separation box; and the lower side of the floating plate is fixedly connected with a diving mechanism. The diving mechanism is arranged, the power assembly is used for driving the inflation assembly, a piston in the inflation sleeve is made to do reciprocating motion, air is injected into the buoyancy air bag, the buoyancy air bag becomes large and expands, and the air in the buoyancy air bag can be exhausted through the exhaust electromagnetic valve; the measuring device measures the flow velocity at different depths of the same place, and since the amount of air injected into the buoyancy air bag through the inflation sleeve is constant each time, the depths measured by the measuring device each time are consistent, and the accuracy of measured data is ensured.

Description

Technical Field

[0001] The present invention relates to the field of water flow velocity measurement, and particularly to a device for fixed-point monitoring and sampling of regional agricultural water resources. Background Art

[0002] In the dry season, it is necessary to open the sluice to release water for irrigating farmland, and the water volume needs to be monitored. One of the most important data is the water flow velocity. Based on the water flow velocity, the water flow volume can be roughly estimated. To achieve accurate measurement of the flow in the ditch, the velocity-area method is mostly used. Common velocity measurement methods include acoustic Doppler, radar, rotor, etc.

[0003] Since a large amount of soil impurities accumulate in the ditch during the unused season, forming an irregular mud layer in the ditch, and the water flow is difficult to wash away these mud layers. Under the obstruction of the mud layer, there are significant differences in the surface water flow velocity and the velocities at the bottom, in the middle, and on the slope of the ditch. The availability of the data is poor. Therefore, it is necessary for users to measure at multiple points. In reality, it often requires staff to hold the measurement device and measure at different depths at multiple points. Long-term measurement will bring physical burden to the staff and easily lead to errors in the measurement data, affecting the accuracy of the measurement. For this reason, a device for fixed-point monitoring and sampling of regional agricultural water resources is needed to solve the above deficiencies. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for fixed-point monitoring and sampling of regional agricultural water resources to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A device for fixed-point monitoring of regional agricultural water resources, including a floating board, a floating airbag is fixedly connected to the lower side of the floating board, a water isolation box is fixedly connected to the lower side of the floating board, and a diving mechanism is fixedly connected to the lower side of the floating board;

[0006] The diving mechanism includes an inflation assembly fixedly connected to the lower side of the floating board. The inflation assembly includes an inflation sleeve fixedly connected to the lower side of the floating board. An inflation piston is slidably connected to the inner wall of the inflation sleeve. An air suction hole is opened on the front side of the inflation sleeve. An air suction pipe is fixedly connected to the inner wall of the air suction hole. An air suction one-way valve is fixedly connected to the surface of the air suction pipe. An inflation hole is opened on the front side of the inflation sleeve. An inflation pipe is fixedly connected to the inner wall of the inflation hole. An inflation one-way valve is fixedly connected to the surface of the inflation pipe. One end of the inflation pipe away from the inflation sleeve is fixedly connected to the input end of the floating airbag.

[0007] Preferably, an exhaust pipe is fixedly connected to the output end of the floating airbag. The end of the exhaust pipe away from the floating airbag penetrates through the upper side of the floating plate and is fixedly connected to an exhaust solenoid valve. A connection hole is formed in the front side of the inflation sleeve. An inflation connecting rod is slidably connected inside the connection hole. The rear end of the inflation connecting rod is fixedly connected to the front side of the piston. The number of the inflation assemblies is two, and the two inflation assemblies are symmetrically arranged on the lower side of the floating plate with the vertical center line on the lower side of the floating plate as the axis of symmetry.

[0008] Preferably, the diving mechanism further includes a power assembly fixedly connected to the lower side of the floating plate. The power assembly includes a gear mounting box fixedly connected to the lower side of the floating plate. A motor is fixedly connected to the front side of the gear mounting box. A first bevel gear is fixedly connected to the front inner wall of the gear mounting box. Mounting holes are formed in both the left and right sides of the gear mounting box. The inner walls of the two mounting holes are rotatably connected to transmission shafts.

[0009] Preferably, second bevel gears are fixedly connected to the surfaces of the two transmission shafts. The end faces of the second bevel gears are rotatably connected to one side inner wall of the adjacent gear mounting box. The two second bevel gears are both meshed with the first bevel gear. Transmission gears are fixedly connected to the surfaces of the two transmission shafts.

[0010] Preferably, transmission racks are slidably connected to the lower side of the floating plate. The number of the transmission racks is two, and the two transmission racks are symmetrically arranged on the lower side of the floating plate with the vertical center line on the lower side of the floating plate as the axis of symmetry. The transmission gears are meshed with the adjacent transmission racks.

[0011] Preferably, connecting plates are fixedly connected to the opposite surfaces of the two transmission racks. The upper sides of the connecting plates are slidably connected to the lower side of the floating plate. The rear side of the floating plate is fixedly connected to the front end of the adjacent inflation connecting rod.

[0012] Preferably, a water retaining baffle is fixedly connected to the upper side of the floating plate. A water retaining box is detachably connected to the upper side of the floating plate. A photovoltaic power generation panel is fixedly connected to the upper side of the water retaining box. A storage battery is fixedly connected to the upper side of the floating plate. An inverter is fixedly connected to the upper side of the floating plate. A rotor type current meter is fixedly connected to the upper side of the floating plate. The output end of the rotor type current meter is fixedly connected to an L-shaped water separation pipe. The end of the L-shaped water separation pipe away from the rotor type current meter penetrates through the lower side of the water separation box and is fixedly connected to a propeller.

[0013] Preferably, a microcomputer mainframe is fixedly connected to the upper side of the floating plate. A control panel is fixedly connected to the upper side of the floating plate. A signal receiver is fixedly connected to the upper side of the floating plate. A signal transmitter is fixedly connected to the upper side of the floating plate. A water retaining baffle is fixedly connected to the lower side of the floating plate. A balance plate is fixedly connected to the surface of the water retaining baffle.

[0014] A regional agricultural water resource fixed-point sampling device, comprising a sampling box and a water pump fixedly installed on the side of a water retaining baffle. The water inlet end of the water pump is fixedly installed with a water inlet pipe, the bottom end of the water inlet pipe is located below the balance plate, the water outlet end of the water pump is fixedly installed with a water outlet pipe, and one end of the water outlet pipe away from the water pump is communicated with the sampling box.

[0015] In summary, the technical effects and advantages of the present invention are as follows:

[0016] 1. In the present invention, by setting a diving mechanism, the inflation component is driven by a power component. The principle of the inflation component is the same as that of a commonly used syringe in reality. Due to the limitation of the intake one-way valve and the inflation one-way valve, when the piston moves forward, the air pressure in the inflation sleeve changes, and the outside air is drawn into the inflation sleeve through the intake pipe. When the piston moves backward, the air in the inflation sleeve is injected into the floating air bag through the inflation pipe, and the floating air bag expands, making the whole device receive a greater buoyancy. The user can also discharge the air in the floating air bag by remotely controlling the exhaust solenoid valve, so that the whole device sinks in the water. Through the cooperation of the diving mechanism and the exhaust solenoid valve, the measuring device can measure the flow rate at different depths at the same location. The measuring process does not require the user to hold it by hand, reducing the labor burden of the staff. Since the amount of air injected into the floating air bag through the inflation sleeve each time is certain, the depth measured by the measuring device can be controlled to be the same after each movement of the measuring device, ensuring the accuracy of the measurement data.

[0017] 2. In the present invention, by setting two inflation components symmetrically distributed below the floating plate, the weight of the device is evenly distributed, enabling the device to better maintain balance in the water flow and ensuring the accuracy of the measurement data.

[0018] 3. In the present invention, by setting a power component as the power source of the diving mechanism, the transmission direction of the power is changed by the cooperation between the first bevel gear and the two second bevel gears. The symmetrically distributed transmission gears and transmission racks keep the weight of the device evenly distributed, enabling the device to better maintain balance in the water flow and ensuring the accuracy of the measurement data.

[0019] 4. In the present invention, by starting the water pump, water can be pumped in through the water inlet pipe and discharged into the sampling box through the water outlet pipe, thereby completing the sampling. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the three-dimensional structure of the embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the three-dimensional structure of the water retaining box in the embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the three-dimensional structure of the rotor type current meter in the embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the bottom view structure of the floating plate (section view of the water retaining fence) in the embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the three-dimensional structure of the diving mechanism in the embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the sectional structure of the inflatable sleeve in the embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the sectional structure of the gear installation box in the embodiment of the present invention.

[0028] In the figure: 1. Floating plate; 2. Water retaining fence; 3. L-shaped water pipe; 4. Propeller; 5. Water retaining fence; 6. Balance plate; 7. Water retaining box; 8. Photovoltaic power generation panel; 9. Storage battery; 10. Inverter; 11. Rotor type current meter; 12. Microcomputer mainframe; 13. Control panel; 14. Signal receiver; 15. Signal transmitter; 16. Buoyancy airbag; 17. Water isolation box; 18. Gear installation box; 19. Motor; 20. First bevel gear; 21. Transmission shaft; 22. Second bevel gear; 23. Transmission gear; 24. Transmission rack; 25. Connecting plate; 26. Inflatable sleeve; 27. Inflatable piston; 28. Inflatable connecting rod; 29. Suction pipe; 30. Suction check valve; 31. Inflation pipe; 32. Inflation check valve; 33. Exhaust pipe; 34. Exhaust solenoid valve; 35. Water inlet pipe; 36. Sampling box; 37. Water outlet pipe; 38. Water pump. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment: Refer to Figures 1 - 7 A kind of regional agricultural water resource fixed-point monitoring device as shown, including a floating board 1, a floating airbag 16 is fixedly connected to the lower side of the floating board 1, a water isolation box 17 is fixedly connected to the lower side of the floating board 1, and a diving mechanism is fixedly connected to the lower side of the floating board 1;

[0031] The diving mechanism includes an inflation assembly fixedly connected to the lower side of the floating board 1. The inflation assembly includes an inflation sleeve 26 fixedly connected to the lower side of the floating board 1. An inflation piston 27 is slidably connected to the inner wall of the inflation sleeve 26. An air suction hole is opened on the front side of the inflation sleeve 26. An air suction pipe 29 is fixedly connected to the inner wall of the air suction hole. An air suction one-way valve 30 is fixedly connected to the surface of the air suction pipe 29. An inflation hole is opened on the front side of the inflation sleeve 26. An inflation pipe 31 is fixedly connected to the inner wall of the inflation hole. An inflation one-way valve 32 is fixedly connected to the surface of the inflation pipe 31. One end of the inflation pipe 31 away from the inflation sleeve 26 is fixedly connected to the input end of the floating airbag 16.

[0032] With the above structure, by setting the floating board 1 as the installation platform, the density of the floating board 1 is small, providing the main buoyancy for the whole device. The wide large board design enables the device to have a certain ability to resist the impact of water flow. The floating airbag 16 can drive the device to dive or float by changing the amount of gas filled inside. The water isolation box 17 provides protection for the diving mechanism to ensure that the parts of the diving mechanism below the liquid level can operate normally and prevent the sundries and water flow in the water channel from affecting the operation between the parts. The inflation assembly is a part of the diving assembly. Since the air suction one-way valve 30 allows air to be sucked into the inflation sleeve 26 unidirectionally from the outside, and the inflation one-way valve 32 allows air to be injected into the floating airbag 16 unidirectionally from the inflation sleeve 26, by the movement of the piston, the air pressure inside the inflation sleeve 26 is changed, enabling the outside air to be quantitatively injected into the floating airbag 16.

[0033] Further, an exhaust pipe 33 is fixedly connected to the output end of the floating airbag 16. One end of the exhaust pipe 33 away from the floating airbag 16 penetrates through the upper side of the floating board 1 and is fixedly connected to an exhaust solenoid valve 34. A connection hole is opened on the front side of the inflation sleeve 26. An inflation connecting rod 28 is slidably connected inside the connection hole. The rear end of the inflation connecting rod 28 is fixedly connected to the front side of the piston. The number of the inflation assemblies is two, and the two inflation assemblies are symmetrically arranged on the lower side of the floating board 1 with the vertical center line of the lower side of the floating board 1 as the axis of symmetry.

[0034] By setting the connection holes to leave an installation position for the inflatable connecting rod 28, the inflatable piston 27 is driven to move by pulling the inflatable connecting rod 28. The two symmetrically distributed in the inflatable assembly ensure the force balance under the floating board 1, ensuring the uniform distribution of the weight of the device, enabling the device to better maintain balance in the water flow, ensuring the accuracy of the measurement data. The exhaust solenoid valve 34 can be remotely controlled by the user to switch the channel, allowing the air in the floating airbag 16 to be discharged, reducing the buoyancy received by the device.

[0035] Furthermore, the diving mechanism further includes a power assembly fixedly connected to the lower side of the floating board 1. The power assembly includes a gear mounting box 18 fixedly connected to the lower side of the floating board 1. A motor 19 is fixedly connected to the front side of the gear mounting box 18. A first bevel gear 20 is fixedly connected to the inner wall of the front side of the gear mounting box 18. Mounting holes are provided on both the left and right sides of the gear mounting box 18, and the inner walls of the two mounting holes are rotatably connected to a transmission shaft 21.

[0036] By setting the gear mounting box 18 as the installation platform and the motor 19 as the power source of the power assembly, the motor 19 is used to drive the first bevel gear 20 to rotate, and the two mounting holes leave space for the installation of the transmission shaft 21.

[0037] Furthermore, second bevel gears 22 are fixedly connected to the surfaces of the two transmission shafts 21. The end faces of the second bevel gears 22 are rotatably connected to the inner wall of one side of the adjacent gear mounting box 18. The two second bevel gears 22 are both meshed with the first bevel gear 20, and transmission gears 23 are fixedly connected to the surfaces of the two transmission shafts 21.

[0038] By setting the second bevel gears 22 that cooperate with the first bevel gear 20, the transmission direction of the power is changed. The first bevel gear 20 is used to drive the two second bevel gears 22 to rotate simultaneously, thereby driving the two transmission gears 23 to rotate. The symmetrically distributed structural design is combined with the two inflatable assemblies, simultaneously ensuring the force balance under the floating board 1, ensuring the uniform distribution of the weight of the device, enabling the device to better maintain balance in the water flow, and ensuring the accuracy of the measurement data.

[0039] Furthermore, a transmission rack 24 is slidably connected to the lower side of the floating board 1. The number of the transmission racks 24 is two. The two transmission racks 24 are symmetrically arranged on the lower side of the floating board 1 with the vertical center line of the lower side of the floating board 1 as the symmetry axis, and the transmission gears 23 are meshed with the adjacent transmission racks 24.

[0040] By setting the cooperation between the transmission gears 23 and the transmission racks 24, the rotational power output is converted into a linear power output. By changing the rotation direction of the motor 19, the movement direction of the transmission rack 24 can be changed.

[0041] Furthermore, connecting plates 25 are fixedly connected to the opposite surfaces of the two transmission racks 24. The upper sides of the connecting plates 25 are slidably connected to the lower side of the floating plate 1, and the rear side of the floating plate 1 is fixedly connected to the front end of the adjacent inflatable connecting rod 28.

[0042] By providing the connecting plates 25, the transmission racks 24 and the inflatable connecting rods 28 are integrated together, and the inflatable connecting rods 28 are driven to move by the transmission racks 24.

[0043] Furthermore, a water retaining apron 2 is fixedly connected to the upper side of the floating plate 1. A water retaining box 7 is detachably connected to the upper side of the floating plate 1. A photovoltaic power generation panel 8 is fixedly connected to the upper side of the water retaining box 7. A storage battery 9 is fixedly connected to the upper side of the floating plate 1. An inverter 10 is fixedly connected to the upper side of the floating plate 1. A rotor type current meter 11 is fixedly connected to the upper side of the floating plate 1. The output end of the rotor type current meter 11 is fixedly connected to an L-shaped water separation pipe 3. One end of the L-shaped water separation pipe 3 far from the rotor type current meter 11 penetrates through the lower side of the water separation box 17 and is fixedly connected to a propeller 4.

[0044] By providing the water retaining apron 2, water flow is prevented from overflowing onto the floating plate 1, avoiding the malfunction of the electronic devices on the floating plate 1 caused by water flow. At the same time, the water retaining apron 2 with a certain height gives the device a certain diving depth. The storage battery 9 is the energy storage device of the device. After the photovoltaic power generation panel 8 converts sunlight, the current can be stored in the storage battery 9 through the inverter 10, extending the endurance time of the device. The L-shaped water separation pipe 3 provides an installation fulcrum for the propeller 4 and leaves space for the signal line inside. The rotor type current meter 11 can detect the rotation speed of the propeller 4 through the signal line.

[0045] Furthermore, a microcomputer mainframe 12 is fixedly connected to the upper side of the floating plate 1. A control panel 13 is fixedly connected to the upper side of the floating plate 1. A signal receiver 14 is fixedly connected to the upper side of the floating plate 1. A signal transmitter 15 is fixedly connected to the upper side of the floating plate 1. A water trapping apron 5 is fixedly connected to the lower side of the floating plate 1. A balance plate 6 is fixedly connected to the surface of the water trapping apron 5.

[0046] By providing the microcomputer mainframe 12, according to the predetermined program of the control panel 13, the flow rate of the water channel is calculated by combining the data transmitted by the rotor type current meter 11. The signal transmitter 15 and the signal receiver 15 enable the staff to remotely control the operation of the device. The water trapping apron 5 forms a small bubble chamber below the floating plate 1, making it difficult for the rapid flow to overturn the floating plate 1. Cooperating with the balance plate 6, the device can better maintain balance in the water flow, ensuring the accuracy of the measurement data.

[0047] A regional agricultural water resource fixed-point sampling device, including a sampling box 36 and a water pump 38 fixedly installed on the side of the water retaining fence 5. The water inlet end of the water pump 38 is fixedly installed with a water inlet pipe 35, the bottom end of the water inlet pipe 35 is located below the balance plate 6, and the water outlet end of the water pump 38 is fixedly installed with a water outlet pipe 37. One end of the water outlet pipe 37 away from the water pump 38 is communicated with the sampling box 36.

[0048] By starting the water pump 38, water can be pumped in through the water inlet pipe 35 and discharged into the sampling box 36 through the water outlet pipe 37, thus completing the sampling.

[0049] The working principle of the present invention is as follows: First, open the exhaust solenoid valve 34, let the floating airbag 16 be emptied and then close the exhaust solenoid valve 34. Then, place the device in water and let the device sink to a certain depth under the action of its own weight. Then, start the rotor flowmeter 11 to measure the flow rate of the water bucket in the deep water area. Then, periodically control the forward and reverse rotation of the motor 19. The operation of the motor 19 drives the first bevel gear 20 to rotate. The rotation of the first bevel gear 20 drives the two second bevel gears 22 to rotate. The rotation of the second bevel gear 22 drives the transmission shaft 21 to rotate. The rotation of the transmission shaft 21 drives the transmission gear 23 to rotate. The rotation of the transmission gear 23 drives the transmission rack 24 to perform a linear motion. The movement of the transmission rack 24 drives the connecting plate 25 to move. The movement of the connecting plate 25 drives the inflating connecting rod 28 to move. The movement of the inflating connecting rod 28 drives the piston to operate. Under the forward and reverse rotation of the motor 19, the piston performs a reciprocating motion in the front and back directions. Due to the limitation of the suction one-way valve 30 and the inflation one-way valve 32, when the piston moves backward, the outside air is inhaled into the inflating sleeve 26 through the suction pipe 29. When the piston moves forward, the air in the sleeve is injected into the floating airbag 16 through the inflation pipe 31. After the floating airbag 16 is inflated, it becomes larger, the buoyancy received by the device becomes larger, and the device gradually floats. By controlling the operation duration of the motor 19, the air injected into the floating airbag 16 is quantitatively controlled, and thus the floating height of the device is controlled. The flow rate of the water body is measured at different heights. After completing the measurement at one location, move to the next measurement position and repeat the above operations until all the measurement work is completed.

[0050] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A regional agricultural water resources fixed-point monitoring device, comprising a floating board (1), characterized in that: The lower side of the floating board (1) is fixedly connected to a buoyancy air bag (16), the lower side of the floating board (1) is fixedly connected to a water-blocking box (17), and the lower side of the floating board (1) is fixedly connected to a diving mechanism; The submersible mechanism comprises an inflatable component fixedly connected to the lower side of the floating board (1), the inflatable component comprises an inflatable sleeve (26) fixedly connected to the lower side of the floating board (1), the inner wall of the inflatable sleeve (26) is slidably connected to an inflatable piston (27), a suction hole is provided on the front side of the inflatable sleeve (26), a suction pipe (29) is fixedly connected to the inner wall of the suction hole, a suction check valve (30) is fixedly connected to the surface of the suction pipe (29), an inflatable hole is provided on the front side of the inflatable sleeve (26), an inflatable pipe (31) is fixedly connected to the inner wall of the inflatable hole, a suction check valve (32) is fixedly connected to the surface of the inflatable pipe (31), and an end of the inflatable pipe (31) away from the inflatable sleeve (26) is fixedly connected to the input end of the buoyancy airbag (16).

2. A regional agricultural water resources fixed-point monitoring device according to claim 1, characterized in that: The output end of the buoyancy airbag (16) is fixedly connected to an exhaust pipe (33), and the end of the exhaust pipe (33) away from the buoyancy airbag (16) passes through the upper side of the floating board (1) and is fixedly connected to an exhaust solenoid valve (34). A connecting hole is provided on the front side of the inflation sleeve (26), and an inflation connecting rod (28) is slidably connected inside the connecting hole. The rear end of the inflation connecting rod (28) is fixedly connected to the front side of the piston. There are two inflation components, and the two inflation components are symmetrically arranged on the lower side of the floating board (1) with the vertical center line of the lower side of the floating board (1) as the symmetry axis.

3. A regional agricultural water resources fixed-point monitoring device according to claim 2, characterized in that: The submersible mechanism further comprises a power assembly fixedly connected to the lower side of the floating plate (1), the power assembly comprising a gear mounting box (18) fixedly connected to the lower side of the floating plate (1), a motor (19) fixedly connected to the front side of the gear mounting box (18), a first bevel gear (20) fixedly connected to the front inner wall of the gear mounting box (18), mounting holes are provided on both left and right sides of the gear mounting box (18), and the inner walls of the two mounting holes are rotatably connected to a transmission shaft (21).

4. The regional agricultural water resources fixed-point monitoring device according to claim 3 is characterized by: The surfaces of the two transmission shafts (21) are fixedly connected with second bevel gears (22); the end faces of the second bevel gears (22) are rotatably connected to the inner wall of one side of the adjacent gear mounting box (18); the two second bevel gears (22) are meshed with the first bevel gear (20); and the surfaces of the two transmission shafts (21) are fixedly connected with transmission gears (23).

5. A regional agricultural water resources fixed-point monitoring device according to claim 4, characterized in that: The lower side of the floating board (1) is slidably connected with a transmission rack (24), the number of the transmission racks (24) is two, the two transmission racks (24) are symmetrically arranged on the lower side of the floating board (1) with the vertical center line of the lower side of the floating board (1) as the symmetry axis, and the transmission gear (23) is meshed with adjacent transmission racks (24).

6. A regional agricultural water resources fixed-point monitoring device according to claim 5, characterized in that: The opposite back sides of the two transmission racks (24) are fixedly connected with a connecting plate (25), the upper side of the connecting plate (25) is slidably connected to the lower side of the floating board (1), and the rear side of the floating board (1) is fixedly connected to the front end of an adjacent inflatable connecting rod (28).

7. The regional agricultural water resources fixed-point monitoring device according to claim 1 is characterized by: The upper side of the floating board (1) is fixedly connected to a water retaining panel (2), the upper side of the floating board (1) is detachably connected to a water retaining box (7), the upper side of the water retaining box (7) is fixedly connected to a photovoltaic power generation panel (8), and the upper side of the floating board (1) is fixedly connected to a storage battery (9).

8. The regional agricultural water resources fixed-point monitoring device according to claim 1 is characterized by: An inverter (10) is fixedly connected to the upper side of the floating plate (1), a rotor-type flow meter (11) is fixedly connected to the upper side of the floating plate (1), an L-shaped watertight pipe (3) is fixedly connected to the output end of the rotor-type flow meter (11), and an end of the L-shaped watertight pipe (3) away from the rotor-type flow meter (11) passes through the lower side of the watertight box (17) and is fixedly connected to a propeller (4).

9. The regional agricultural water resources fixed-point monitoring device according to claim 1 is characterized by: The upper side of the floating board (1) is fixedly connected to a microcomputer host (12), the upper side of the floating board (1) is fixedly connected to a control panel (13), the upper side of the floating board (1) is fixedly connected to a signal receiver (14), and the upper side of the floating board (1) is fixedly connected to a signal transmitter (15); the lower side of the floating board (1) is fixedly connected to a water-trapping board (5), and the surface of the water-trapping board (5) is fixedly connected to a balance board (6).

10. A regional agricultural water resources fixed-point sampling device, characterized in that: It comprises a sampling box (36) and a water pump (38) fixedly mounted on the side of a water-trapping enclosure (5); a water inlet pipe (35) is fixedly mounted on the water inlet end of the water pump (38); the bottom end of the water inlet pipe (35) is located below the balance plate (6); a water outlet pipe (37) is fixedly mounted on the water outlet end of the water pump (38); and the end of the water outlet pipe (37) away from the water pump (38) is connected to the sampling box (36).

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