A hydrological drought monitoring device

Abstract

The present invention relates to the technical field of hydrological drought soil moisture detection, and specifically to a hydrological drought monitoring device, wherein a support frame includes a top plate, and a plurality of scissor-type support legs are evenly installed along the circumference of the outer ring surface of the top plate. The scissor-type support legs include an outer plug rod and an inner connecting rod. The inner connecting rod includes an inner plug rod section hinged to the outer plug rod, and the top end of the inner plug rod section is obliquely connected to a connecting rod section. The connecting rod section is hinged to the top plate and can slide axially along the hinge. A control box is installed below the top plate via an electric push rod. The control box is provided with a detection control unit connected to the electric push rod, and the detection control unit is used to control the extension and retraction of the electric push rod. An insert is fixedly installed at the bottom of the control box, and the bottom end of the insert is a conical seal. The present invention aims to provide a hydrological drought monitoring device that is simple to operate, firmly fixed, and accurately detects. The electric push rod is used to automatically insert the insert rod into the soil and detect moisture, thereby avoiding soil mixing, ensuring data accuracy, and supporting real-time transmission to assess drought conditions.

Description

Technical Field

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

[0002] Hydrological drought monitoring is a crucial component of water resource management and ecological protection. It aims to assess the water resource status of a region, particularly soil moisture. Failure to conduct effective hydrological drought monitoring can lead to misjudgments of water resources, which in turn can cause a range of problems, such as inadequate agricultural irrigation, irrational water resource allocation, and ecological degradation. Therefore, accurate soil moisture monitoring is crucial for developing scientifically sound water resource management strategies.

[0003] Deep soil moisture, as a key indicator for measuring groundwater level changes and soil moisture storage capacity, can provide more stable and long-term data support than surface soil, helping to more accurately judge hydrological drought conditions. Changes in deep soil moisture often reflect groundwater levels and precipitation infiltration recharge, providing a reliable basis for drought early warning. However, traditional methods rely on manual knocking or spiral insertion of sensors into deep soil for moisture detection. This is not only complex and inefficient, but also easily causes mixing of soils at different levels, affecting the accuracy of detection data. Summary of the Invention

[0004] In response to the defects and problems of existing water temperature and drought monitoring devices, the present invention provides a hydrological drought monitoring device, aiming to provide a hydrological drought monitoring device that is easy to operate, firmly fixed, and accurately detects. It uses an electric push rod to automatically insert into the soil and detect humidity, avoiding soil mixing, ensuring data accuracy, and supporting real-time transmission to assess drought conditions.

[0005] The solution adopted by the present invention to solve its technical problems is: a hydrological drought monitoring device, including a support frame, an electric push rod, a control box, a detection control unit and an insert cylinder; the support frame includes a top plate, and a plurality of scissor-type support legs are evenly installed on the outer ring surface of the top plate along the circumferential direction, the scissor-type support legs include an outer plug-in rod and an inner connecting rod, the inner connecting rod includes an inner plug-in rod section hinged to the outer plug-in rod, and the top end of the inner plug-in rod section is obliquely connected to the connecting rod section, the outer ring surface of the top plate is evenly provided with a plurality of sliding sleeves along the circumferential direction, the sliding sleeves correspond to the scissor-type support legs one by one, the sliding sleeves are hinged to the top plate, and the connecting rod sections of the scissor-type support legs are matched and inserted in the corresponding sliding sleeves, and can be moved along the sliding sleeves. Axial sliding; the control box is installed under the top plate through an electric push rod, and a detection control unit connected to the electric push rod is provided in the control box, and the detection control unit is used to control the extension and retraction of the electric push rod; the insert is fixedly installed at the bottom of the control box, and the bottom end of the insert is a conical seal; the outer ring surface of the insert is provided with a window connected to the interior, and the inner side of the window is matched with a humidity detection unit connected to the controller, the humidity detection unit includes a detection mechanism and a telescopic drive mechanism, the detection mechanism is connected to the detection control unit for detecting soil moisture; the telescopic drive mechanism is connected to the detection control unit for controlling the extension and retraction of the detection mechanism.

[0006] A drive shaft is rotatably installed in the insert tube, and the top end of the drive shaft extends upward into the control box. The control box is provided with a drive mechanism, and the drive shaft is transmission-connected to the drive mechanism. The detection mechanism includes a detection block and a humidity detection sensor. The detection block is radially slidably installed in the insert tube through a window. A strip drive channel is provided in the middle of the detection block, and the drive shaft passes through the drive channel. The telescopic drive mechanism is installed on the drive shaft. The humidity detection sensor is matched and installed on the outer end of the detection block and is connected to the detection control unit.

[0007] An installation groove matching the humidity detection sensor is provided on the upper end surface or the lower end surface of the outer end of the detection block. The humidity detection sensor is matched and installed in the installation groove, and the humidity detection sensor does not protrude from the detection block.

[0008] The telescopic drive mechanism includes an upper drive disc, a lower drive disc, an upper drive assembly and a lower drive assembly, the upper drive disc and the lower drive disc are axially slidably installed in the insertion tubes on the upper and lower sides of the detection block, and the upper drive disc and the lower drive disc are both connected to the drive shaft for transmission. When the drive shaft rotates, the upper drive disc and the lower drive disc are driven to rise and fall synchronously along the inner wall of the insertion tube; the upper drive disc is connected to the detection block through the lower drive assembly, and when the upper drive disc descends, the detection block is driven to slide inward and retract through the lower drive assembly; the lower drive disc is connected to the detection block through the upper drive assembly, and when the lower drive disc rises, the detection block is driven to slide outward and extend out of the insertion tube through the upper drive assembly.

[0009] The upper driving assembly includes an upper driving block and an upper block in the shape of a right triangle, and the lower driving assembly includes a lower driving block and a lower block in the shape of a right triangle, the lower block and the upper block are respectively fixed in the driving channels on the left and right rear sides of the driving shaft, the hypotenuse end face of the lower block is arranged upward toward the driving shaft, and the hypotenuse end face of the upper block is arranged downward toward the driving shaft; the upper driving block is matched and mounted on the lower driving disk below the upper block, and the upper driving block is provided with an extending inclined surface matching the hypotenuse end face of the upper block; the lower driving block is matched and mounted on the lower driving disk above the lower block, and the lower driving block is provided with a retraction inclined surface matching the hypotenuse end face of the lower block.

[0010] The outer rod is matched with a hinge seat, and the inner rod section and the connecting rod section are an integrated structure, which is formed by bending the inner connecting rod. The rod body above the bending part of the inner connecting rod is the connecting rod section, and the rod body below the bending part of the inner connecting rod is the inner rod section. The middle part of the bending part of the rod body above the inner rod section is hingedly installed in the hinge seat, and the inner connecting rod can be flipped downward around the hinge seat so that the inner rod section and the outer rod are in conflict and spliced ​​together.

[0011] The control unit includes a power supply, a controller, and a wireless transceiver module installed in a control box. The controller is connected to the electric push rod and the humidity detection unit, and is used to control the extension and retraction of the electric push rod and receive soil moisture data detected by the humidity detection unit. The wireless transceiver module is connected to the controller and is used to send the soil moisture data received by the controller to a hydrological drought monitoring center. The power supply is connected to the controller. A control panel connected to the controller is provided on the outer wall of the control box. The control panel is used to display and adjust controller parameters.

[0012] The outer rod is provided with a plurality of grooves at vertical intervals on the rod body facing the inner rod section, and the inner rod section is provided with blocks matching the grooves. When the inner connecting rod is flipped downward so that the inner rod section and the outer rod come into contact with each other, the blocks on the inner rod section are respectively matched and inserted into the corresponding grooves of the outer rod.

[0013] Beneficial effects of the present invention: A hydrological drought monitoring device provided by the present invention realizes adaptive soil fixation through the dynamic expansion of scissor-type support legs, thereby enhancing stability under complex soil conditions; a tapered insert direct insertion design combined with a sensor telescopic sealing mechanism is adopted to minimize soil disturbance and protect detection elements, thereby ensuring that deep moisture data is true and reliable; based on the coordination of a dual-drive disk linkage mechanism and a detection control unit, precise telescopic drive and remote intelligent monitoring are realized, thereby improving operational efficiency; modular inserts and foldable support structures take into account scalability, portability and environmental adaptability, providing a high-precision, low-maintenance and highly adaptable full-scenario solution for hydrological drought monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention;

[0015] Figure 2 Schematic diagram of the top plate structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the scissor-type support leg structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the control box structure of the present invention;

[0018] Figure 5 This is a schematic diagram of the insert structure of the present invention;

[0019] Figure 6 This is a schematic diagram of the internal structure of the insert tube of the present invention;

[0020] Figure 7 Schematic diagram of the structure of the humidity detection unit of the present invention;

[0021] Figure 8 It is a structural schematic diagram of the telescopic drive mechanism of the present invention;

[0022] Figure 9 This is a schematic diagram of the process of unfolding the scissor-type support legs of the present invention;

[0023] Figure 10 This is a control relationship frame view of the detection control unit of the present invention.

[0024] 1 is a top plate, 11 is a plug seat, 12 is a sliding sleeve, 2 is a scissor-type support leg, 21 is an outer rod, 211 is a groove, 22 is a hinged seat, 23 is a knock plate, 24 is an inner connecting rod, 241 is an inner rod segment, 242 is a connecting rod segment, 244 is a block, 3 is an electric push rod, 4 is a control box, 41 is a box body, 42 is a box cover, 43 is a socket, 44 is a bevel gear box, 441 is an input end, 5 is a plug, 51 is a drive shaft, 52 is a window, 53 is a conical soil-breaking head, 54 is a guide strip, 6 is a humidity detection unit, 61 is a detection block, 611 is a drive channel, 62 is a C-shaped track, 63 is an upper drive disk, 64 is a lower drive disk, 65 is an upper drive assembly, 651 is an upper drive block, 652 is an upper block, 66 is a lower drive assembly, 661 is a lower drive block, and 662 is a lower block. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] Embodiment 1: In response to the problems raised in the above background technology, this embodiment provides a hydrological drought monitoring device, such as Figure 1-10As shown, it includes a support frame, an electric push rod 3, a control box 4, a detection control unit and an insert tube 5; the support frame includes a top plate 1, and a plurality of scissor-type support legs 2 are evenly installed on the outer ring surface of the top plate 1 along the circumferential direction. The scissor-type support legs 2 include an outer plug-in rod 21 and an inner connecting rod 24. The inner connecting rod 24 includes an inner plug-in rod segment 241 hinged to the outer plug-in rod. The top end of the inner plug-in rod segment 241 is obliquely connected to a connecting rod segment 242. The connecting rod segment 242 is hinged to the top plate and can slide axially along the hinge. The bottom end of the inner plug-in rod segment 241 and the bottom end of the outer plug-in rod 21 are both provided with chamfers to facilitate insertion into the soil.

[0027] Specifically: Figure 2 and Figure 3 As shown, a hinge seat 22 is matched on the outer rod, and the inner rod section and the connecting rod section 242 are an integrated structure, which is formed by bending the inner connecting rod. The rod body above the bending part of the inner connecting rod is the connecting rod section 242, and the rod body below the bending part of the inner connecting rod is the inner rod section. The middle part of the bending part of the rod body above the inner rod section is hingedly installed in the hinge seat, and the inner connecting rod can be flipped downward around the hinge seat so that the inner rod section and the outer rod are in conflict with each other and spliced ​​together. The side wall of the outer rod near the inner connecting rod below the hinge seat 22 and the side wall of the inner rod section near the outer rod side are both flat. A plurality of grooves are provided on the plane of the outer rod 21 below the hinge seat 22 at vertical intervals, and a stopper matching the groove is provided on the plane of the inner rod section 241. When the inner connecting rod can be flipped downward around the hinge seat so that the inner rod section and the outer rod are collided and spliced ​​together, the stops on the inner rod section 241 are respectively matched and inserted into the corresponding grooves on the plane of the outer rod 21, and the top of the stopper 244 is in contact with the inner top wall of the groove 211. Therefore, when the top end of the outer rod 21 is knocked downward to drive the inner rod section 241 to insert the scissor-type support legs into the soil, the outer rod 21 and the inner rod section 241 are engaged with each other through the grooves and the stopper, which can effectively reduce the force shared by the hinge seat 22 and the hinge shaft installed in the hinge seat 22.

[0028] A plurality of sliding sleeves are evenly provided on the outer ring surface of the top plate along the circumferential direction. The sliding sleeves correspond to the scissor-type support legs one by one. The sliding sleeve 12 is hinged to the top plate. There are various ways of hinged connection between the sliding sleeve 12 and the top plate. For example, a plug socket 11 is provided on the outer ring surface of the top plate 1 along the radial direction. The sliding sleeve 12 is rotatably installed in the plug socket 11, and the sliding sleeve 12 can rotate in the plug socket 11. The connecting rod section of the scissor-type support leg is matched and inserted in the corresponding sliding sleeve and can slide axially along the sliding sleeve.

[0029] Preferably, a knocking plate 23 is mounted on the top of the external rod to increase the top area of ​​the external rod and facilitate knocking with a tool.

[0030] The control box is installed under the top plate through an electric push rod. The control box 4 includes a box body 41 with an open top. A box cover 42 is installed on the top of the box body 41 by bolts. A socket 43 is matched on the box cover 42. The electric push rod 3 is fixedly installed on the bottom of the top plate 1. The telescopic end of the electric push rod 3 is set downward and fixedly inserted into the socket 43 on the box cover of the control box 4; a detection control unit connected to the electric push rod is provided in the control box, and the detection control unit is used to control the extension and retraction of the electric push rod. A position sensor connected to the detection control unit is provided on the bottom of the control box for detecting the vertical distance between the control box and the ground.

[0031] The insert 5 is fixedly mounted on the bottom of the control box 4 , and the bottom end of the insert 5 is a conical seal. There are many ways to set the conical seal at the bottom of the insert 5 , for example: a conical breaking head 53 is threadedly mounted on the bottom of the insert 5 .

[0032] A window 52 communicating with the interior is provided on the outer ring surface of the insert 5. A humidity detection unit 6 connected to the controller is matched and provided in the insert inside the window 52. A plurality of humidity detection units 6 are arranged at vertical intervals. In this embodiment, three humidity detection units 6 are arranged at vertical intervals. The humidity detection unit includes a detection mechanism and a telescopic drive mechanism. The detection mechanism is connected to the detection control unit for detecting soil moisture; the telescopic drive mechanism is connected to the detection control unit for controlling the extension and retraction of the detection mechanism.

[0033] Specifically: a drive shaft 51 is rotatably installed in the insert tube, the top end of the drive shaft 51 extends upward into the control box, and is transmission-connected to a drive mechanism, which is used to drive the drive shaft to rotate. The drive mechanism includes a bevel gear box 44 that is matched and installed in the control box. The output end of the bevel gear box 44 is transmission-connected to the drive shaft 51, and the input end 441 of the bevel gear box 44 extends outward from the control box. When in use, the drive shaft can be driven to rotate through the input end 441.

[0034] like Figure 6-8 As shown, the detection mechanism includes a detection block 61 and a humidity detection sensor. The detection block 61 is installed in the insert tube by sliding radially through the window. A strip drive channel 611 is provided in the middle of the detection block 61. The drive shaft 51 is located in the drive channel, and the drive shaft will not contact the groove wall in the drive channel during the radial sliding process of the detection block. This design can effectively avoid the drive shaft, prevent the detection block from contacting the drive shaft during movement, and reduce friction between components and potential wear risks.

[0035] There are many ways to install the detection block 61 in radial sliding manner. For example, C-shaped tracks are symmetrically provided in the insert tubes on the left and right sides of the window, the C-shaped tracks 62 are matched and docked with the window, and the detection block 61 is matched and inserted into the two C-shaped tracks.

[0036] The telescopic drive mechanism is installed on the drive shaft. When the drive shaft rotates, the telescopic assembly drives the detection block to slide back and forth in the radial direction, controlling the extension and retraction of the outer end of the detection block. The detection block in the retracted state blocks the window.

[0037] Specifically: the telescopic drive mechanism includes an upper drive disk 63, a lower drive disk 64, an upper drive assembly 65 and a lower drive assembly 66. The upper drive disk 63 and the lower drive disk 64 are axially slidably installed in the insert tubes on the upper and lower sides of the detection block, and the upper drive disk and the lower drive disk are both connected to the drive shaft. When the drive shaft rotates, it will drive the upper drive disk and the lower drive disk to rise and fall synchronously along the inner wall of the insert tube.

[0038] Specifically: Figure 6 and Figure 7 As shown, the drive shaft 51 in the insert tube 5 is provided with an external thread, and the inner wall of the insert tube 5 is evenly spaced with a plurality of guide strips 54 along the circumferential direction. The upper drive disc and the lower drive disc have the same structure, both including a disc body and a screw sleeve. The screw sleeve is threadedly mounted on the drive shaft, and the disc body is fixedly mounted on the screw sleeve. The outer ring surface of the disc body is in contact with the inner wall of the insert tube, and a notch is provided on the outer ring surface of the disc body that matches the guide strip 54. The cooperation between the notch and the guide strip 54 constrains the disc body to only slide axially along the inner wall of the insert tube, and cannot rotate based on the lock screw sleeve, so that when the drive shaft rotates, the upper and lower drive discs can be driven to rise and fall synchronously.

[0039] The upper drive disk is connected to the detection block through the lower drive assembly. When the upper drive disk descends, the detection block will be driven to slide inward and retract through the lower drive assembly; the lower drive disk is connected to the detection block through the upper drive assembly. When the lower drive disk rises, the detection block will be driven to slide outward and extend out of the insertion tube through the upper drive assembly. The drive shaft is located between the lower drive assembly and the upper drive assembly. When the drive block moves, the drive shaft will not contact the two drive assemblies.

[0040] The upper driving assembly 65 includes an upper driving block 651 and an upper block 652 in the shape of a right triangle. The upper block is installed in the driving channel close to the window side, and the hypotenuse end face of the upper block is set downward toward the driving shaft. The upper driving block is matched and installed on the lower driving plate below the upper block, and the upper driving block is provided with a protruding inclined surface that matches the hypotenuse end face of the upper block. The protruding inclined surface is in contact with the hypotenuse end face of the upper block. When the lower driving plate moves up, it will drive the upper driving block to move up, thereby driving the detection block to move outward along the hypotenuse end face of the upper block through the upper driving block to extend out of the insertion tube.

[0041] The lower driving assembly 66 includes a lower driving block 661 and a lower block 662 in the shape of a right triangle. The lower block is installed in the driving channel away from the window side, and the hypotenuse end face of the lower block is set upward toward the driving shaft. The lower driving block is matched and installed on the lower driving plate above the lower block, and the lower driving block is provided with a retraction inclined surface matching the hypotenuse end face of the lower block. The retraction inclined surface is in contact with the hypotenuse end face of the lower block. When the upper driving plate moves downward, it will drive the lower driving block to move downward, thereby driving the detection block to move inward and retract into the insertion tube along the hypotenuse end face of the lower block through the lower driving block.

[0042] The humidity detection sensor is matched and installed on the outer end of the detection block and is connected to the detection control unit. The upper end face or the lower end face of the outer end of the detection block is provided with a mounting groove matching the humidity detection sensor. The humidity detection sensor is matched and installed in the mounting groove, and the humidity detection sensor does not protrude from the detection block.

[0043] like Figure 10 As shown, the control unit includes a power supply, a controller and a wireless transceiver module in a concealed cover control box. The controller is connected to the electric push rod and the humidity detection unit, and is used to control the extension and retraction of the electric push rod and receive the soil moisture data detected by the humidity detection unit. The wireless transceiver module is connected to the controller and is used to send the soil moisture data received by the controller to the hydrological drought monitoring center. The power supply is connected to the controller. A control panel connected to the controller is provided on the outer wall of the control box. The control panel is used to display and adjust the controller parameters.

[0044] When in use, after the support frame is unfolded and placed on the ground, the outer plug rods of the scissor-type support legs of the support frame are struck by a tool, so that the outer plug rods of the scissor-type support legs and the inner plug rod sections of the inner connecting rods are vertically inserted into the ground. After the support frame is fixed, the electric push rod is started to extend through the monitoring control unit. During the extension process, the electric push rod will push the control box downward to insert the insert tube downward into the deep soil. As the insert tube goes deeper, the insertion resistance of the insert tube will increase. When the insertion resistance of the insert tube is greater than the fixing force of the support frame fixed to the ground, the extended electric push rod will push the top plate of the support frame upward to move up, thereby driving the inner connecting rod to flip, so that the inner plug rod section of the inner connecting rod rotates inward around the hinge seat 22 and separates from the outer plug rod, so that the scissor-type support legs are opened in the soil like scissors, thereby improving the fixing force of the support frame and allowing the insert tube to be smoothly inserted into the deep soil. After completion, the driving mechanism drives the driving shaft in the insert to rotate clockwise, and the clockwise rotating driving shaft will drive the retracted detection block to extend radially outward through the window, so that the humidity detection sensor installed at the end of the detection block is in direct contact with the deep soil, thereby directly detecting the humidity of the deep soil. Compared with the existing inserts that are inserted into the soil by manual knocking and spiral drilling, the electric push rod is used to directly insert the insert into the soil, which is easy to operate. In the process of direct insertion of the insert, the conical bottom can not only reduce the insertion resistance, but also reduce the soil and push it around. Compared with the spiral drilling method that carries the upper soil to the deep layer, the electric push rod is used to press the insert without mixing the soil layer, and the detection result is more accurate. After receiving the monitoring data, the detection control unit will send it to the monitoring center. The detection center can judge the hydrological drought situation in the area based on the deep soil moisture.

[0045] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are not intended to limit the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A hydrological drought monitoring device, characterized in that: The invention comprises a support frame, an electric push rod, a control box, a detection control unit and an insert cylinder; the support frame comprises a top plate, the outer ring surface of the top plate is evenly installed with a plurality of scissor-type support legs along the circumferential direction, the scissor-type support legs comprise an outer plug-in rod and an inner connecting rod, the inner connecting rod comprises an inner plug-in rod section hinged to the outer plug-in rod, the top end of the inner plug-in rod section is obliquely connected to the connecting rod section, the outer ring surface of the top plate is evenly provided with a plurality of sliding sleeves along the circumferential direction, the sliding sleeves correspond to the scissor-type support legs one by one, the sliding sleeves are hinged to the top plate, and the connecting rod sections of the scissor-type support legs are matched and inserted in the corresponding sliding sleeves, and the sliding sleeves can slide on the connecting rod sections; a mounting bracket is arranged under the top plate. An electric push rod is installed, and a control box is installed at the lower end of the electric push rod. A detection control unit connected to the electric push rod is provided in the control box, and the detection control unit is used to control the extension and retraction of the electric push rod; the insert is fixedly installed at the bottom of the control box, and the bottom end of the insert is conical and sealed; a window is provided on the outer ring surface of the insert, and a humidity detection unit connected to the controller is matched on the inner side of the window. The humidity detection unit includes a detection mechanism and a telescopic drive mechanism, and the detection mechanism is connected to the detection control unit for detecting soil moisture; the telescopic drive mechanism is connected to the detection control unit for controlling the extension and retraction of the detection mechanism; a drive shaft is rotatably installed in the insert, and the top end of the drive shaft extends upward into the control box. The control box is provided with a drive mechanism, and the drive shaft is connected to the drive mechanism in a transmission manner; the detection mechanism includes a detection block and a humidity detection sensor, the detection block passes through the window and is radially slidably installed in the insert, and a strip drive channel is provided in the middle of the detection block, and the drive shaft passes through the drive channel; the telescopic drive mechanism is installed on the drive shaft; the humidity detection sensor is matched and mounted on the outer end of the detection block and is connected to the detection control unit; the telescopic drive mechanism includes an upper drive disk, a lower drive disk, and a lower drive disk. The upper and lower drive discs are axially slidably installed in the insert cylinders on the upper and lower sides of the detection block, and the upper and lower drive discs are both connected to the drive shaft. When the drive shaft rotates, the upper and lower drive discs will be driven to rise and fall synchronously along the inner wall of the insert cylinder; the upper drive disc is connected to the detection block through the lower drive assembly, and when the upper drive disc descends, the detection block will be driven to slide inward and retracted through the lower drive assembly; the lower drive disc is connected to the detection block through the upper drive assembly, and when the lower drive disc rises, the detection block will be driven to slide outward and extend out of the insert cylinder through the upper drive assembly.

2. The hydrological drought monitoring device according to claim 1, characterized in that: An installation groove matching the humidity detection sensor is provided on the upper end surface or the lower end surface of the outer end of the detection block, and the humidity detection sensor is matched and installed in the installation groove.

3. The hydrological drought monitoring device according to claim 1, characterized in that: The upper driving assembly includes an upper driving block and an upper block in the shape of a right triangle, and the lower driving assembly includes a lower driving block and a lower block in the shape of a right triangle, the lower block and the upper block are respectively fixed at two ends of the driving channel, wherein the hypotenuse end face of the lower block faces upward, and the hypotenuse end face of the upper block faces downward; the upper driving block is installed on the lower driving disk, and the upper driving block is provided with a protruding inclined surface, and the protruding inclined surface of the upper driving block is opposite to the hypotenuse end face of the upper block; the lower driving block is installed on the lower driving disk, and the lower driving block is provided with a retraction inclined surface, and the retraction inclined surface is opposite to the hypotenuse end face of the lower block.

4. The hydrological drought monitoring device according to claim 1, characterized in that: An articulated seat is provided on the outer rod, and the inner rod section and the connecting rod section are an integrated structure. The lower section of the inner connecting rod is the inner rod section, and the upper section of the inner connecting rod is bent to form the connecting rod section. A horizontal axis is provided at the bent part of the inner connecting rod and installed in the articulated seat, so that the inner connecting rod flips downward around the articulated seat, so that the inner rod section and the outer rod collide and fit together.

5. The hydrological drought monitoring device according to claim 1, characterized in that: The detection control unit includes a power supply, a controller and a wireless transceiver module installed in a control box. The controller is connected to the electric push rod and the humidity detection unit, and is used to control the extension and retraction of the electric push rod and receive soil moisture data detected and acquired by the humidity detection unit. The wireless transceiver module is connected to the controller and is used to send the soil moisture data received by the controller to a hydrological drought monitoring center. The power supply is connected to the controller. A control panel connected to the controller is provided on the outer wall of the control box, and the control panel is used to display and adjust controller parameters.

6. The hydrological drought monitoring device according to claim 1, characterized in that: The outer rod body is provided with a plurality of grooves at vertical intervals, and the inner rod section is provided with a stopper matching the grooves. When the inner connecting rod is flipped downward so that the inner rod section abuts the outer rod, the stopper of the inner rod section is inserted into the corresponding groove of the outer rod.

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