Drought monitoring device

Abstract

The invention discloses a drought monitoring device, and belongs to the technical field of soil detection, the drought monitoring device comprises a probe rod and a force application rod, the probe rod comprises: a core rod comprising a rod body and an insertion end arranged at one end of the rod body; the shaft sleeves are detachably and fixedly connected with the rod body, the rod body is sleeved with the at least two shaft sleeves at intervals, and the shaft sleeves are in limiting fit with the rod body in the circumferential direction; the rigid sleeves are different from the shaft sleeves and are arranged on the core rod at intervals in a sleeving manner, and mounting holes used for arranging humidity sensors are formed in the side walls of the rigid sleeves; by means of the arrangement mode, the speed of heat transfer between the rigid sleeves and the outside of the soil can be reduced, the difference value between the temperature of the rigid sleeves and the surrounding soil is reduced in the working process, and therefore the probability that condensate water is formed on the surfaces of the rigid sleeves can be reduced, and the service life of the condensate water is prolonged. The probability that the drought monitoring result is influenced by condensed water is reduced, and the result error of drought monitoring is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of soil monitoring, and in particular to a drought monitoring device. Background Art

[0002] Drought monitoring is currently commonly carried out using remote sensing technology. Remote sensing technology can quickly obtain drought information in large areas, but due to spatial resolution limitations, remote sensing technology is difficult to accurately detect small-scale farmland or local droughts. Based on this, drought monitoring devices are currently used in existing technologies to monitor small-scale farmland or local drought conditions.

[0003] For example, the Chinese invention patent with application number: 2022116603910 discloses a drought monitoring device based on soil moisture conditions, which can predict local drought conditions by local soil moisture conditions and can monitor drought in a small area of ​​farmland. However, it also has the following problems: the above-mentioned device uses a probe rod inserted into the ground to a certain depth, and a detection probe is set on the probe rod. The detection probe is used to detect the humidity inside the soil, and the degree of drought is predicted based on the soil moisture. Long-term monitoring is required. When the temperature difference between day and night is large or the outside temperature is significantly different from the soil temperature, the heat conduction temperature of the probe rod and the outside world drops, causing the moisture in the soil to condense on the surface of the probe rod, thereby causing the soil humidity near the probe rod to be high, which will affect the accuracy of soil moisture detection, thereby causing errors in the drought monitoring results. Summary of the invention

[0004] The object of the present invention is to solve the above problems and provide a drought monitoring device.

[0005] To achieve the above object, the technical solution of the present invention is: a drought monitoring device, including a probe rod and a force application rod, wherein the probe rod includes: The core rod comprises a rod body and a plug-in end arranged at one end of the rod body; A shaft sleeve, detachably fixedly connected to the rod body, including at least two sleeves spaced apart on the rod body, and cooperating with the rod body in a circumferential limiting manner; The rigid sleeve comprises a plurality of sleeves spaced apart from the shaft sleeve and sleeved on the core rod, and a mounting hole for arranging the humidity sensor is arranged on the side wall; The heat-insulating sleeve is sleeved on the core rod and is arranged between two adjacent rigid sleeves and between the rigid sleeve and the shaft sleeve.

[0006] Furthermore, at least one heat exchange channel is arranged on the side wall of the rigid sleeve, and a plurality of moisture absorption components corresponding to the plurality of rigid sleeves are arranged on the side wall of the core rod, and the moisture absorption components include at least one radial hole corresponding to the heat exchange channel, and a water absorbent is arranged in the radial hole.

[0007] Furthermore, an inner cavity is axially arranged in the core rod, the radial hole is communicated with the inner cavity, and the inner cavity is provided with a ventilation component.

[0008] Furthermore, the heat exchange channel is inclined from one end away from the core rod to one end close to the core rod, and is arranged toward the direction close to the plug-in end.

[0009] Furthermore, the ventilation component includes a bracket arranged in the inner cavity, the bracket includes a rigid air tube extending into the inner cavity, and a plurality of containers arranged on the rigid air tube at intervals, the plurality of containers correspond one-to-one to the plurality of rigid sleeves, and when the bracket is arranged in the inner cavity, each container is located below the corresponding radial hole, the lower end of the rigid air tube extends to the bottom of the container, and the top of each container is used to set a water-absorbing material.

[0010] Furthermore, it also includes a pump body, and the upper end of the rigid air tube and the upper end of the inner cavity are respectively connected to the pump inlet and the pump outlet of the pump body.

[0011] Furthermore, a drying chamber is provided on the circulating gas path of the pump body.

[0012] Furthermore, a heat insulating lining is provided between the rigid sleeve and the core rod.

[0013] Furthermore, the outer circumferential surface of the core rod is provided with at least one rib of a strip structure, and the inner circumferential surfaces of the shaft sleeve, the heat insulation sleeve and the rigid sleeve are all provided with keyways adapted to the rib.

[0014] Furthermore, along the axial direction, it also includes an insertion rod that passes through the shaft sleeve, the insulation sleeve, the rigid sleeve and the plug-in end in sequence. The number of the insertion rods is equal to the number of heat exchange channels on each rigid sleeve and corresponds one to one. When the insertion rods are in the plugged state, the insertion rods block the heat exchange channels.

[0015] Compared with the prior art, the drought monitoring device disclosed in the present invention has the following beneficial effects: by adopting a connection method in which a core rod, a heat insulating sleeve, a rigid sleeve, a first sleeve and a second sleeve are matched for the probe rod, the speed of heat transfer between the rigid sleeve and the outside of the soil can be reduced. When working, the difference between the temperature of the rigid sleeve and the surrounding soil is reduced, thereby reducing the probability of condensation water forming on the surface of the rigid sleeve, reducing the probability of drought monitoring results being affected by the formation of condensation water, and reducing the error of drought monitoring results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the overall structure of a drought monitoring device of the present invention.

[0017] Figure 2 The present invention is a schematic diagram of the overall structure of a probe rod and a force-applying rod in a drought monitoring device.

[0018] Figure 3The present invention is a schematic diagram of the axial structure of a probe rod and a force-applying rod in a drought monitoring device.

[0019] Figure 4 for Figure 3 The schematic diagram of the cross-sectional structure of a drought monitoring device of the present invention at AA is shown.

[0020] Figure 5 for Figure 4 The diagram shows a local enlarged structural diagram of point B in the present invention.

[0021] Figure 6 The structure of the probe rod in a drought monitoring device of the present invention is shown in FIG. Figure 1 .

[0022] Figure 7 The structure of the probe rod in a drought monitoring device of the present invention is shown in FIG. Figure 2 .

[0023] Figure 8 The present invention is a schematic structural diagram of a force-applying rod in a drought monitoring device.

[0024] Fig. 9 The figure is a schematic diagram of the axial structure of a probe rod in a drought monitoring device of the present invention.

[0025] Fig.10 for Fig. 9 The figure shows a schematic cross-sectional structure diagram of a probe rod at EE in a drought monitoring device of the present invention.

[0026] Fig.11 The present invention is a schematic structural diagram of a core rod in a drought monitoring device.

[0027] Fig.12 for Fig.11 The schematic diagram of the local enlarged structure of D in the present invention is shown.

[0028] Fig.13 The structure of the shaft sleeve and the heat insulation sleeve in a drought monitoring device of the present invention is shown in FIG. Figure 1 .

[0029] Fig.14 The structure of the shaft sleeve and the heat insulation sleeve in a drought monitoring device of the present invention is shown in FIG. Figure 2 .

[0030] Fig.15 The structure of the rigid sleeve in a drought monitoring device of the present invention is shown in FIG. Figure 1 .

[0031] Fig.16 The end surface structure of the rigid sleeve in a drought monitoring device of the present invention is schematically shown. Figure 2 .

[0032] Fig.17 for Fig.16 The figure shows a schematic cross-sectional structure diagram of a rigid sleeve at FF in a drought monitoring device of the present invention.

[0033] Fig.18 for Fig.16 The figure shows a schematic cross-sectional structure diagram of a drought monitoring device of the present invention with a rigid sleeve at GG.

[0034] Fig.19 The figure is a schematic diagram of the structure of a bracket in a drought monitoring device of the present invention.

[0035] Fig. 20 The present invention is a schematic structural diagram of an insertion rod in a drought monitoring device.

[0036] In the figure: 1, force rod; 10, connecting flange; 11, plug-in cavity; 111, airway; 115, seal; 12, first wire transmission hole; 121, wire outlet; 122, vent; 2, probe rod; 21, first sleeve; 210, first threaded hole; 211, first plug-in channel; 2110, receiving groove; 213, first countersunk hole; 22, heat insulation sleeve; 221, third plug-in channel; 23, rigid sleeve; 231, second plug-in channel; 232, heat exchange channel; 233, heat insulation lining; 234, mounting hole; 25, second sleeve; 250, second countersunk hole; 251, locking screw; 26, core rod; 260, plug-in end; 2600, plug-in hole; 261, rib; 262, inner cavity; 2621, mounting groove; 263, radial hole; 27, bracket; 271, rigid air pipe; 272, first air permeable plate; 2720, air hole; 273, container; 2730, second air permeable plate; 28, plug rod; 280, end plate; 281, second threaded hole; 29, water absorbent; 3, wire harness channel; 31, second wire delivery hole; 32, third wire delivery hole; 33, fourth wire delivery hole; 4, first switching valve; 5, photovoltaic panel; 51, energy storage unit; 61, drying chamber; 610, first air inlet; 611, first air outlet; 612, second air inlet; 62, filter chamber; 7, solenoid valve; 8, pump body; 81, second switching valve; 82, first temperature sensor; 83, control device. DETAILED DESCRIPTION

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0038] Embodiment 1 Please refer to Figure 2 As a specific implementation, the technical solution of the present application is: a drought monitoring device, including a probe rod 2 and a force application rod 1, wherein the probe rod 2 includes: The core rod 26 includes a rod body and a plug-in end 260 disposed at one end of the rod body; A shaft sleeve, which is detachably fixedly connected to the rod body, at least two of which are sleeved on the rod body at intervals, and cooperate with the rod body in a circumferential limiting manner; The rigid sleeve 23 includes a plurality of sleeves spaced apart from the shaft sleeve and sleeved on the core rod 26, and a mounting hole 234 for setting the humidity sensor is provided on the side wall; The heat insulating sleeve 22 is sleeved on the core rod 26 and is disposed between two adjacent rigid sleeves 23 and between the rigid sleeve 23 and the shaft sleeve.

[0039] Specifically, the technical solution of the present application is: comprising a core rod 26, referring to Fig.11 The core rod 26 includes a rod body and a plug-in end 260 disposed at one end of the rod body. The plug-in end 260 is a conical structure, and the cross-sectional area of ​​the conical end surface is larger than the cross-sectional area of ​​the rod body. Figure 2 , Figure 6 , Figure 7 Three sleeves are arranged at intervals on the rod body of the core rod 26, including a first sleeve 21 located at the end of the core rod 26 and two second sleeves 25 arranged at intervals between the first sleeve 21 and the plug-in end 260. The outer circumferential surface of the first sleeve 21 is provided with a first countersunk hole 213, and the inner thread of the first countersunk hole 213 is connected with a locking rod; similarly, the outer circumferential surface of the second sleeve 25 is provided with a second countersunk hole 250, and the second countersunk hole 250 is threadedly connected with a locking screw 251, and the first sleeve 21 and the second sleeve 25 are locked on the rod body of the core rod 26 through the first countersunk hole 213.

[0040] As a specific implementation, two rigid sleeves 23 are arranged on both sides of each second sleeve 25, the rigid sleeve 23 is made of stainless steel or PC material, the core rod 26 is made of stainless steel, and the rigid sleeve 23 and the second sleeve 25 are separated by an insulating sleeve 22. Fig.15 , Fig.16 , Fig.18 The outer surface of the rigid sleeve 23 is provided with a mounting hole 234. The mounting hole 234 is a blind hole for mounting the detection sensor. The rigid sleeve 23 is made of metal or PC material, preferably corrosion-resistant stainless steel material to ensure strength, and can effectively protect the detection sensor when the probe rod 2 is inserted into the ground.

[0041] Further, refer to Fig.18 A fourth wire transmission hole 33 is provided on the side wall of the rigid sleeve 23, referring to Fig.13 , Fig.14A second wire transmission hole 31 and a third wire transmission hole are provided on the shaft sleeve and the heat insulation sleeve 22 corresponding to the fourth wire transmission hole 33. When installed on the core rod 26 to form the probe rod 2, the fourth wire transmission hole 33, the second wire transmission hole 31 and the third wire transmission hole 32 together form a wiring harness channel 3, and the wiring harness of the humidity sensor is laid through the wiring harness channel 3.

[0042] Specifically, in the present application, the core rod 26 is made of corrosion-resistant stainless steel. Figure 4-Figure 8 The force rod 1 is a cylindrical structure, with an external thread on the outer circumference and a connecting flange 10 at the end. Fig. 9 The first sleeve 21 is provided with a first threaded hole 210 adapted to the connecting flange 10, and the connecting flange 10 is detachably fixedly connected to the first sleeve 21. The end of the force rod 1 is provided with a plug-in cavity 11, and the plug-in cavity 11 and the end of the core rod 26 are plugged and transmission matched. Specifically, the outer peripheral surface of the core rod 26 is provided with a strip-shaped rib 261, and the inner side wall of the plug-in cavity 11 is provided with a keyway adapted to the rib 261 to achieve transmission matching. Reference Figure 8 A first wire transmission hole 12 corresponding to the wiring harness channel 3 is provided on the end face of the flange, and a wire outlet 121 corresponding to the first wire transmission hole 12 is provided on the outer peripheral surface of the force application rod 1. When the force application rod 1 is connected to the probe rod 2, the first wire transmission hole 12 is correspondingly connected to the end of the wiring harness channel 3.

[0043] As a specific implementation, the heat insulating sleeve 22 can be made of materials with a thermal conductivity lower than that of the rigid sleeve, such as rubber, plastic, heat insulating cotton, silicate insulation material, rigid foam polyurethane, etc., preferably rigid foam polyurethane, and the shaft sleeve and rigid sleeve 23 are preferably made of PC. Through the above-mentioned setting, the probe 2 adopts a connection method in which the core rod 26, the heat insulating sleeve 22, the rigid sleeve 23, and the first shaft sleeve 21 and the second shaft sleeve 25 cooperate to reduce the speed of heat transfer between the rigid sleeve 23 and the outside of the soil. When working, the temperature of the rigid sleeve 23 is basically consistent with the temperature of the surrounding soil, thereby reducing the probability of condensation water forming on the surface of the rigid sleeve 23, reducing the probability of affecting the drought monitoring results due to the formation of condensation water, and reducing the error of drought monitoring results.

[0044] When in use, the probe rod 2 is assembled, and the detection sensor is installed in the mounting hole 234, and the wiring harness is discharged from the outlet 121 through the wiring harness channel 3 and connected to the external control device 83. The detection value of the detection sensor is analyzed by the control device 83 to obtain the soil moisture condition. Similar to the background technology, the force rod 1 is equipped with a mounting seat on the outside, a handwheel is arranged on the upper end of the force rod 1, and the mounting seat is threadedly connected to the force rod 1. The force rod 1 is rotated by rotating the handwheel, thereby causing a displacement between the force rod 1 and the mounting seat to move the force rod 1 downward, pushing the probe rod 2 into the ground, and can drive the core rod 26 below to rotate. The rotation of the core rod 26 can reduce the resistance to insertion into the ground.

[0045] Embodiment 2 It can be understood that by setting the probe rod 2 as a structure composed of a core rod 26, a sleeve body, a rigid sleeve 23 and an insulating sleeve 22, the heat conduction rate between the probe rod 2 and the outside world can be reduced. However, since the core rod 26 and the rigid sleeve 23 are both made of stainless steel, they also have a fast heat conduction path. Therefore, when the temperature difference between the inside and the outside is large, the surface of the rigid sleeve 23 is still likely to reach the dew point, and condensed water will be generated. In order to further reduce the probability of condensed water generation, as a specific implementation method, the difference between this embodiment and the embodiment is that the reference Fig.10 , Fig.11 , Fig.12 , Fig.17 In view of the above problems, as a further improvement, the technical solution of the present application is: a drought monitoring device, wherein at least one heat exchange channel 232 is arranged on the side wall of the rigid sleeve 23, and a plurality of moisture absorption components corresponding to the plurality of rigid sleeves 23 are arranged on the side wall of the core rod 26, and the moisture absorption component includes at least one radial hole 263 arranged in a one-to-one correspondence with the heat exchange channel 232, and a water absorbent member 29 is arranged in the radial hole 263.

[0046] Specifically, in this embodiment, a plurality of groups of moisture absorbing components corresponding to the rigid sleeve 23 are arranged on the rod body of the core rod 26, and at least one heat exchange channel 232 is arranged on the rigid sleeve 23. Fig.10 When the rigid sleeve 23 is arranged on the core rod 26, the heat exchange channel 232 is exposed on the surface of the core rod 26. The moisture absorption component includes a radial hole 263 in the area corresponding to the heat exchange channel 232 and a water absorbent 29 arranged in the radial hole 263. The water absorbent 29 can be made of a water-absorbing sponge, cotton and linen products, etc. Through the above arrangement, after the probe 2 is inserted into the ground, the heat exchange channel 232 is connected with the core rod 26, so that the internal temperature of the heat exchange channel 232 is close to the temperature of the core rod 26. When the temperature difference between the inside and the outside is large, the internal temperature of the heat exchange channel 232 is lower than the temperature of the soil and the rigid sleeve 23. At this time, part of the water vapor in the soil will condense on the surface of the core rod 26 and in the heat exchange channel 232 through the heat exchange channel 232, and will be absorbed by the water absorbent 29 after condensation, so that the temperature of the core rod 26 around the rigid sleeve 23 can be reduced to be lower than the humidity in the gas around the rigid sleeve 23, so that the probability of condensed water generated on the outer peripheral surface of the rigid sleeve 23 when the temperature difference between the inside and the outside is too large.

[0047] Specifically, it can be understood that the temperature generally has a large difference between day and night, such as the temperature in autumn and western regions; the absorbent member 29 is made of absorbent sponge and cotton and linen materials. When the temperature is high during the day, the water inside the absorbent member 29 can also be partially evaporated, so that it can work repeatedly for a long time underground and adapt to long-term monitoring requirements.

[0048] Furthermore, as a preferred embodiment, the core rod 26 is made of stainless steel, and the first sleeve 21, the second sleeve 25, and the rigid sleeve 23 are all made of PC. The core rod 26 is made of stainless steel, and the insulation sleeve is made of rubber or rigid foam polyurethane having a lower thermal conductivity than PC. The insulation lining 233 can also be made of rubber or rigid foam polyurethane.

[0049] Furthermore, as a preferred embodiment, in order to ensure the water absorption performance of the water absorbent 29 and prevent the water absorbent 29 from absorbing too much water and causing the condensed water to be diverted or evaporated into the soil again, an inner cavity 262 is axially arranged in the core rod 26, and the radial hole 263 is connected to the inner cavity 262, and the inner cavity 262 is provided with a ventilation component.

[0050] Specifically, refer to Figure 1 , Fig.19 An inner cavity 262 is coaxially arranged inside the core rod 26, and the radial hole 263 is connected to the inner cavity 262. The end of the water absorbing member 29 penetrates into the inner cavity 262. The water absorbing member 29 can absorb water on the one hand, and on the other hand, it can block the radial hole 263 to prevent external soil particles from rolling into the core rod 26. By arranging a ventilation component in the inner cavity 262, the inner cavity 262 can be ventilated to make the inner cavity 262 dry, thereby achieving the effect of drying the water absorbing member 29. The specific structure of the ventilation component is referred to below.

[0051] Further, as a preferred embodiment, refer to Fig.10 , Fig.15 , Fig.17 , Fig.18 The heat exchange channel 232 is arranged from one end away from the core rod 26 to the end close to the core rod 26, and is inclined toward the direction close to the plug end 260. Specifically, by setting the heat exchange channel 232 to be inclined, the condensed water is guided when it is generated, ensuring that the condensed water is absorbed by the water absorbing member 29, and preventing the condensed water from flowing out.

[0052] Further, as a specific implementation method, refer to Figure 1 , Figure 5 , Figure 6 , Fig.19 The ventilation component includes a bracket 27 arranged in the inner cavity 262, the bracket 27 includes a rigid air tube 271 extending into the inner cavity 262, and a plurality of containers 273 arranged at intervals on the rigid air tube 271. The plurality of containers 273 correspond one-to-one to the plurality of rigid sleeves 23. When the bracket 27 is arranged in the inner cavity 262, each container 273 is located below the corresponding radial hole 263, the lower end of the rigid air tube 271 extends to the bottom of the container 273, and the top of each container 273 is used to place a water-absorbing material.

[0053] Specifically, the bracket 27 includes a rigid air pipe 271, which is made of stainless steel or other materials. A plurality of containers 273 are integrally arranged on the rigid air pipe 271, and the containers 273 are also made of stainless steel and connected to the rigid air pipe 271 by welding. Figure 5 , Fig.19 The upper end of the rigid air tube 271 is also provided with a first air permeable plate 272. The end of the core rod 26 is provided with a mounting groove 2621 coaxial with the inner cavity 262. The first air permeable plate 272 is sleeved on the outer peripheral surface of the rigid air tube 271 and can slide outside the rigid tube to adjust the position. When the bracket 27 is arranged in the inner cavity 262, the first air permeable plate 272 is arranged in the mounting groove 2621. Fig.10 At this time, the container 273 is just below the radial hole 263. The lower bottom surface of the container 273 is the second air permeable plate 2730. A water-absorbing sponge, cotton and linen, expanded soil and other materials that can absorb and lose water can be set above the container 273. An air channel 111 is coaxially arranged in the force rod 1. When the force rod 1 is installed on the probe rod 2, the rigid air pipe 271 can extend into the air channel 111 and be sealed by the seal 115. Figure 1 A vent 122 connected to the bottom end of the plug-in cavity 11 is also provided on the outer peripheral surface of the force application rod 1. Through this arrangement, when in actual use, at least one of the pump outlet end and the suction end of the pump body 8 is connected to at least one of the airway 111 and the vent 122 respectively. When the bracket 27 is installed in the core rod 26, a water-absorbing material is arranged above each container 273. The water-absorbing material can absorb the moisture of the water-absorbing member 29. The pump body 8 is connected to the control device 83, and the control device 83 controls the pump body 8 to ventilate the inner cavity 262 and dry the internal water-absorbing material.

[0054] During specific use, a temperature sensor and a humidity sensor can also be arranged in the mounting hole 234. The humidity sensor detects soil humidity. Both are connected to the control device 83. The pump body 8 is also connected to the control device 83. According to the detection values ​​of the temperature sensor and the humidity sensor, when the temperature in the soil reaches a predetermined temperature value more than once, the pump body 8 is controlled to work, wherein the predetermined temperature value is 0-2 degrees Celsius higher than the dew point temperature.

[0055] Furthermore, as a specific implementation, a pump body 8 is also included, and the upper end of the rigid air pipe 271 and the upper end of the container 273 are respectively connected to the pump inlet and the pump outlet of the pump body 8.

[0056] Furthermore, a drying chamber 61 is provided on the circulating gas path of the pump body 8 .

[0057] Specifically, as an implementation method, refer to Figure 1The pump outlet end of the pump body 8 is connected to the vent 122, and the suction end is connected to the airway 111, and a drying chamber 61 is arranged between the pump body 8 and the airway 111. The drying chamber 61 is a chamber with a water-absorbing material arranged inside. The water-absorbing material can be made of water-absorbing resin, cotton and linen, water-absorbing expanded soil and other materials. Through this arrangement, the gas can be dried through the drying chamber 61 during circulation, thereby improving the drying effect.

[0058] Further, refer to Figure 1 As a specific implementation, the drought monitoring device provided by the present application also includes a photovoltaic panel 5, an energy storage unit 51 connected to the photovoltaic panel 5, and a first temperature sensor 82 arranged outside. The drying chamber 61 is also connected to the filter chamber 62. The filter chamber 62 is provided with a chamber for filtering air dust such as air filter cotton. The drying chamber 61 is provided with a first air inlet 610 and a first air outlet 611. The filter chamber 62 is provided with a second air inlet 612. The second air inlet 612 is provided with an electromagnetic valve 7. The airway 111 is connected to the first switching valve 4. The common end of the first switching valve 4 is connected to the airway 111. The first switching valve 4 One outlet of the first switching valve 4 is connected to the atmosphere, and the other outlet of the first switching valve 4 is connected to the first air inlet 610; it also includes a second switching valve 81, the common end of the second switching valve 81 is connected to the pump outlet end of the pump body 8, one outlet of the second switching valve 81 is connected to the atmosphere, and the other outlet of the second switching valve 81 is connected to the vent 122, the first temperature sensor 82, the first switching valve 4, the second switching valve 81 and the solenoid valve 7 are all connected to the control device 83. Through the above-mentioned setting, the temperature of the external air is detected by the first temperature sensor 82, and the temperature sensor inside the installation groove 2621 detects the temperature inside the soil.

[0059] When the pump body 8 is required to work, the detection values ​​of the two temperature sensors are first obtained. When the detection value of the first temperature sensor 82 is lower than the soil temperature value and the difference between the two is more than 3 degrees Celsius, the first switching valve 4 is in a state of connecting the air duct 111 and the drying chamber 61, the second switching valve 81 is in a state of connecting the vent 122 and the pump body 8, and the solenoid valve 7 is in a closed state. At this time, the pump body 8 works to circulate gas and dry the inner cavity 262. At this time, the internal circulation can avoid the introduction of external cold air, which will cause the core rod 26 to further cool down, and the rigid sleeve to further cool down and produce condensed water.

[0060] Furthermore, when the detection value of the first temperature sensor 82 is higher than the soil temperature value, the first switching valve 4 is switched to connect the airway 111 and the atmosphere, the solenoid valve 7 is switched to an open state, and the second switching valve 81 remains connected to the pump body 8 and the vent 122. At this time, when the pump body 8 is working, it can pump the outside air with a higher temperature into the inner cavity 262, which can increase the drying speed.

[0061] Furthermore, as a preferred embodiment, in actual application, the water-absorbing member 29 in the drying chamber 61 can also be made of water-absorbing materials that can be ventilated and dried, such as cotton, linen, and water-absorbing expansive soil. Through this setting, when the control device 83 detects that the photovoltaic panel 5 has a large amount of power generation and the first temperature sensor 82 detects that the outside temperature is not lower than 5 degrees Celsius, the first switching valve 4 is controlled to be connected to the atmosphere, the solenoid valve 7 is opened, and the second switching valve 81 is switched to a state where the pump body 8 is connected to the atmosphere. At this time, when the pump body 8 is working, it can pass the outside air through the filter chamber 62 and the drying chamber 61 in turn, and then discharge it into the atmosphere through the pump body 8. The moisture inside the drying chamber 61 is brought out by introducing airflow from the outside, and the water-absorbing material inside the drying chamber 61 is ventilated and dried. Preferably, the drying chamber 61 can be made of a transparent material, and the internal water-absorbing material can be illuminated when the sun is directly shining, and combined with ventilation, a better dehumidification effect can be achieved.

[0062] Through the above settings, the monitoring device can be set in the monitoring area, and in conjunction with the photovoltaic panel 5, it can work automatically for a long time, and can effectively avoid the probability of condensation water on the surface of the probe rod 2, reduce the impact of condensation water, and ensure the accuracy and effectiveness of the monitoring data.

[0063] Further, as a preferred embodiment, refer to Fig.10 , Fig.15 A heat insulating lining 233 is also provided between the rigid sleeve 23 and the core rod 26. Specifically, the heat insulating lining 233 is provided on the inner circumferential surface of the rigid sleeve 23. Rubber, rigid foam polyurethane and other materials can be used, preferably rigid foam polyurethane. By providing the heat insulating lining 233, the heat conduction rate between the core rod 26 and the rigid sleeve 23 can be further reduced, so that the temperature difference between the surface temperature of the rigid sleeve 23 and the soil temperature is reduced, and the probability of condensation water generation is further reduced.

[0064] Further, as a specific implementation method, refer to Figure 6 , Fig.11 , Fig.13 , Fig.15 As shown, the outer circumference of the core rod 26 is provided with at least one strip-shaped rib 261, and the inner circumferences of the shaft sleeve, the heat insulation sleeve 22 and the rigid sleeve 23 are all provided with keyways adapted to the rib 261. Specifically, three strip-shaped ribs 261 are evenly spaced on the outer circumference of the core rod 26, and the inner circumferences of the shaft sleeve, the heat insulation sleeve 22 and the rigid sleeve 23 are all adapted to be provided with keyways. Through the ribs 261, the shaft sleeve and the core rod 26 can be circumferentially limited and transmission-matched, and the rigid sleeve 23 can achieve circumferential positioning through the cooperation of the keyways and the ribs 261, ensuring that the heat exchange channel 232 can correspond to the radial hole 263, which is convenient for assembly.

[0065] Further, as a preferred embodiment, refer to Figure 12-20, along the axial direction, it also includes a plug rod 28 that passes through the shaft sleeve, the heat insulation sleeve 22, the rigid sleeve 23 and the plug end 260 in sequence. The number of the plug rods 28 is equal to the number of heat exchange channels 232 on each rigid sleeve 23 and corresponds one to one. When the plug rods 28 are in the plugged state, the plug rods 28 block the heat exchange channels 232. Specifically, a first plug channel 211 is provided on the end surface of the first shaft sleeve 21, and a receiving groove 2110 is provided at the end of the first plug channel 211. Fig.14 The heat-insulating sleeve 22 is provided with a third plug-in channel 221 corresponding to the first plug-in channel. Fig.15 The rigid sleeve 23 is provided with a second plug-in channel 231 corresponding to the first plug-in channel 211 and the third plug-in channel 221. The second sleeve 25 is also provided with the first plug-in channel 211. When the sleeve, the heat-insulating sleeve 22 and the rigid sleeve 23 are sleeved on the outside of the core rod 26, the first plug-in channel 211, the second plug-in channel 231 and the third plug-in channel 221 are connected to form a through plug-in channel. Fig.11 , Fig.12 , a plug hole 2600 corresponding to the plug channel is provided at the plug end 260, refer to Fig. 20 The plug rod 28 includes a rod body that is plugged into the plug channel and an end plate 280 disposed at the end of the rod body. The end plate 280 is provided with a second threaded hole 281. Fig.10 , Fig.17 , the first plug-in channel 211 and the heat exchange channel 232 are arranged to overlap and cross each other. With this arrangement, after the sleeve, the heat insulation sleeve 22 and the rigid sleeve 23 are sequentially sleeved on the core rod 26, the first sleeve 21 and the second sleeve 25 are locked and positioned by the locking screw 251, and then the plug rod 28 passes through the plug-in channel and the plug hole 2600. When the end plate 280 at the end of the plug rod 28 enters the installation groove 2621, the lower end of the plug rod 28 can extend into the plug hole 2600. With this arrangement, the first sleeve 21, the second sleeve 25 and the plug end 26 are arranged at intervals. 60 together position the insertion rod 28, and the insertion rod 28 can also circumferentially position the rigid sleeve 23 and the thermal insulation sleeve 22, and can block the heat exchange channel 232 when the insertion rod 28 is inserted, and then the force rod 1 is installed on the end of the probe rod 2, and the force is applied to the probe rod 2 through the force rod 1 to insert the probe rod 2 into the ground. By setting the insertion rod 28, on the one hand, it can ensure that when the probe rod 2 rotates around the axis, the circumferential driving force is transmitted to the rigid sleeve 23 and the thermal insulation sleeve 22 through the probe rod 2, thereby avoiding the thermal insulation lining 233 from being damaged by extrusion. On the other hand, it can also block the heat exchange channel 232 to avoid the soil from blocking the heat exchange channel 232.

[0066] Furthermore, after the insertion rod 28 is inserted into the ground, the force rod 1 is disassembled, and then the lifting screw is screwed into the second threaded hole 281, and the end of the lifting screw is pressed against the bottom of the installation groove 2621, so that the insertion rod 28 is pushed out of the plug-in hole 2600, and then the insertion rod 28 is pulled out, and the force rod 1 is installed again, and the air path and the line are connected, so that drought monitoring can be carried out.

[0067] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A drought monitoring device, comprising a probe rod (2) and a force application rod (1), characterized in that: The probe rod (2) comprises: A core rod (26) comprising a rod body and a plug-in end (260) disposed at one end of the rod body; A shaft sleeve, detachably fixedly connected to the rod body, including at least two sleeves spaced apart on the rod body, and cooperating with the rod body in a circumferential limiting manner; The rigid sleeve (23) comprises a plurality of sleeves spaced apart from the shaft sleeve and sleeved on the core rod (26), and a mounting hole (234) for mounting a humidity sensor is provided on the side wall; The heat insulating sleeve (22) is sleeved on the core rod (26) and is disposed between two adjacent rigid sleeves (23) and between the rigid sleeve (23) and the shaft sleeve.

2. A drought monitoring device according to claim 1, characterized in that: At least one heat exchange channel (232) is arranged on the side wall of the rigid sleeve (23), and a plurality of moisture absorbing components corresponding to the plurality of rigid sleeves (23) are arranged on the side wall of the core rod (26), the moisture absorbing components comprising at least one radial hole (263) corresponding to the heat exchange channel (232), and a water absorbing member (29) is arranged in the radial hole (263).

3. A drought monitoring device according to claim 2, characterized in that: An inner cavity (262) is axially arranged in the core rod (26); the radial hole (263) is in communication with the inner cavity (262); and the inner cavity (262) is provided with a ventilation component.

4. A drought monitoring device according to claim 2, characterized in that: The heat exchange channel (232) is arranged in an inclined manner from an end away from the core rod (26) to an end close to the core rod (26), and in a direction close to the plug-in end (260).

5. A drought monitoring device according to claim 3, characterized in that: The ventilation component comprises a support (27) arranged in the inner cavity (262), the support (27) comprising a rigid air tube (271) extending into the inner cavity (262), and a plurality of containers (273) arranged at intervals on the rigid air tube (271), the plurality of containers (273) corresponding to the plurality of rigid sleeves (23) one by one, and when the support (27) is arranged in the inner cavity (262), each container (273) is located below the corresponding radial hole (263), the lower end of the rigid air tube (271) extends to the bottom of the inner cavity (262), and a water-absorbing material is arranged above each container (273).

6. A drought monitoring device according to claim 5, characterized in that: It also includes a pump body (8), wherein the upper end of the rigid air pipe (271) and the upper end of the inner cavity (262) are respectively connected to the pump inlet and the pump outlet of the pump body (8).

7. A drought monitoring device according to claim 6, characterized in that: A drying chamber (61) is also provided on the circulating gas path of the pump body (8).

8. A drought monitoring device according to claim 1, characterized in that: A heat-insulating lining (233) is also provided between the rigid sleeve (23) and the core rod (26).

9. A drought monitoring device according to claim 2, characterized in that: The outer circumferential surface of the core rod (26) is provided with at least one rib (261) of a strip structure, and the inner circumferential surfaces of the shaft sleeve, the heat insulation sleeve (22) and the rigid sleeve (23) are all provided with keyways adapted to the rib (261).

10. A drought monitoring device according to claim 9, characterized in that: Axially, it also includes an insertion rod (28) that passes through the shaft sleeve, the heat insulating sleeve (22), the rigid sleeve (23) and the plug-in end (260) in sequence, the number of the insertion rods (28) being equal to and corresponding to the number of the heat exchange channels (232) on each rigid sleeve (23), and when the insertion rod (28) is in the plugged state, the insertion rod (28) shields the heat exchange channels (232).

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