An underwater mud surface vertical displacement monitoring device based on multi-source sensors

Abstract

The present invention relates to an underwater mud surface vertical displacement monitoring device based on multi-source sensors, belonging to the field of underwater geological exploration technology. The device comprises two riverbanks, a riverbed fixed between the two riverbanks, river water located between the two riverbanks and on top of the riverbed, multiple displacement monitoring devices located on top of the riverbed, and multiple laser radars fixed on top of each of the two riverbanks. Each displacement monitoring device includes a stabilizing assembly, a transmission mechanism provided on the inner bottom wall of the stabilizing assembly, a monitoring assembly provided on top of the transmission mechanism, and two limit pins movably connected to the monitoring assembly and extending through the monitoring assembly, both of which extend into the transmission mechanism. This underwater mud surface vertical displacement monitoring device based on multi-source sensors is simple and convenient to install, can reduce the impact of waves on detection results, and further improves monitoring accuracy by monitoring from various angles using multiple sensors.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater geological exploration, in particular to an underwater mud surface vertical displacement monitoring device based on multi-source sensors. Background Art

[0002] With the rapid development of underwater infrastructure around the world, the safety monitoring and maintenance of underwater structures has become an important issue that needs to be addressed urgently. Underwater buildings and engineering facilities face complex monitoring challenges in terms of withstanding natural forces such as water flow, waves, and earthquakes, as well as settlement and displacement during long-term use. Traditional monitoring methods have many limitations, especially in terms of accuracy, real-time performance, coverage, and environmental adaptability. Therefore, new and efficient underwater monitoring devices are urgently needed to meet this challenge.

[0003] For example, a Chinese patent (publication number: CN102853812B) discloses an angular displacement underwater settlement meter, which has a piston-type displacement transmission device. The piston-type displacement transmission device has a lower casing and an upper casing. An extension rod is connected to the bottom of the piston-type displacement transmission device, and the lower end of the extension rod is an anchor point. A measuring box is connected to the top of the piston-type displacement transmission device, and the measuring box contains a settlement electric measuring device and an A / D conversion device. The upper end of the measuring box is connected to a steel pipe, and the top of the steel pipe is connected to a settlement plate; a transmission belt is contained in the piston-type displacement transmission device, and the upper end of the transmission belt is connected to the settlement electric measuring device, which is connected to the A / D conversion device. The A / D conversion device is connected to a remote monitoring instrument above via a cable. The settlement meter has a simple structure and converts linear displacement into angular displacement to improve measurement precision and accuracy. The angular displacement underwater settlement meter has a wide application range, high monitoring precision and sensitivity, strong anti-interference and high stability of the transmitted signal, and a real-time and intuitive display of the settlement value. It is easy to install and low in cost.

[0004] However, the installation of this device is not convenient, because the device requires the lower extension rod of the sedimentometer to be fixed to an anchor point in the underground rock layer where no settlement occurs, and then the settlement plate is fixed to the soil layer to be measured. The fixing point is generally located underwater, and manual diving and special equipment are required for installation. At the same time, the installation is more difficult when the installation location is located at an anchor point in the rock layer where no settlement occurs. Therefore, an underwater mud surface vertical displacement monitoring device based on multi-source sensors is proposed to solve the above problems. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an underwater mud surface vertical displacement monitoring device based on multi-source sensors, which has the advantages of easy installation and solves the problem that underwater fixation requires diving and carrying special tools for installation, which is not convenient.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an underwater mud surface vertical displacement monitoring device based on a multi-source sensor, comprising two river banks, the riverbed being fixed between the two river banks, river water being located between the two river banks and on top of the riverbed, a plurality of displacement monitoring devices being installed on top of the riverbed, and a plurality of laser radars being fixed on top of each of the two river banks;

[0007] Each displacement monitoring device includes a stabilizing assembly fixed to the top of the riverbed; a transmission mechanism is provided on the inner bottom wall of the stabilizing assembly for easy installation and extending outside the stabilizing assembly; a monitoring assembly is provided on the top of the transmission mechanism to improve detection accuracy and extend outside the river water; two limit pins are movably connected to the monitoring assembly and penetrate the monitoring assembly, and both limit pins extend into the transmission mechanism;

[0008] Each of the stabilizing components includes a stabilizing plate that fits against the top of the riverbed, a drive motor is fixed to the top of the stabilizing plate, and each of the transmission mechanisms includes an adjustment rod fixed to the bottom of the monitoring component, a switching portion extending outside the bottom wall of the adjustment rod is provided on the inner side of the adjustment rod, and each of the switching portions includes a transmission rod fixed to the output shaft of the drive motor;

[0009] Each of the monitoring components includes a stabilizing block fixed to the top of the adjusting rod, a floating cabin fixed to the outside of the stabilizing block, an extension rod fixed to the top of the stabilizing block, two monitoring parts passing through the stabilizing block are provided in the stabilizing block, the two monitoring parts are respectively located on the left and right sides of the adjusting rod, and a detection ring is fixed to the outer surface of the extension rod and above the two monitoring parts;

[0010] Each of the monitoring parts includes an inverted cup that passes through the stabilizing block. The bottom of the inverted cup is open, and a threaded hole that passes through the top wall of the inverted cup is provided on the top wall of the inverted cup. A threaded plug that passes through the threaded hole is connected to the inner thread of the threaded hole. An internal air pressure sensor and an external air pressure sensor are respectively fixed on the inner wall and outer wall of the inverted cup. Two laser rangefinders are fixed on the side of the inner cavity of each inverted cup close to the extension rod.

[0011] Furthermore, a drill bit extending into the riverbed is fixed to the bottom of the stabilizing plate, a stabilizing seat coaxial with the drill bit is fixed to the top of the stabilizing plate, water pressure sensors are fixed on the left and right sides of the stabilizing seat, two locking parts located outside the transmission mechanism are provided on the top of the stabilizing seat, and a plurality of inclined mud discharge holes are provided on the stabilizing plate.

[0012] Furthermore, each of the locking parts includes a waterproof shell fixed to the top of the stable seat, a first-level electric push rod is fixed to the inner bottom wall of the waterproof shell, the output end of the first-level electric push rod passes through the side wall of the waterproof shell close to the transmission mechanism, the output end of the first-level electric push rod is away from one end of the first-level electric push rod and a semicircular locking block is fixed outside the waterproof shell, and a friction pad is fixed on the inner side of each locking block.

[0013] Furthermore, the switching part extends into the stabilizing seat, and the outer surface of the switching part is movably connected with a stabilizing rod, the stabilizing rod extends into the stabilizing seat and is threadedly connected to the inner wall of the stabilizing seat, the stabilizing rod extends to the outer surface of the adjusting rod and is threadedly connected to the adjusting rod, the driving motor is located on the inner side of the stabilizing seat, the output of the driving motor is fixed to the switching part, the two locking blocks are both located on the outside of the stabilizing rod, and a battery is fixed on the top of the stabilizing plate and between the driving motor and the stabilizing seat.

[0014] Furthermore, the transmission rod is provided with a mounting portion located on the inner side of the stabilizing rod, the transmission rod extends into the adjusting rod, an adjustment portion is provided at the top of the transmission rod and located inside the adjusting rod, a sealed bearing is fixed on the outer surface of the transmission rod, and the outer surface of the sealed bearing is fixed to the inner side wall of the stabilizing seat.

[0015] Furthermore, a stabilizing hole is provided on the top of each transmission rod, and each adjustment part includes a secondary electric push rod fixed to the inner side wall of the stabilizing hole, the output end of the secondary electric push rod extends outside the stabilizing hole, and a connecting frame is fixed to the top of the secondary electric push rod. The outer surface of the transmission rod is rotatably connected to a driving gear through a bearing, and the driving gear is meshed with the inner side wall of the adjusting rod, and the connecting frame passes through the driving gear.

[0016] Furthermore, spring holes are provided on the left and right sides of each transmission rod, and each mounting portion includes two connecting springs respectively fixed to the inner walls of the two spring holes. The two connecting springs are fixed on opposite sides with connecting blocks extending outside the spring holes, and the outer side of the connecting block is arc-shaped. A plurality of first-level external teeth are fixed to the outer side of the connecting block, and a plurality of first-level internal teeth adapted to the first-level external teeth are fixed to the inner side of the stabilizing rod.

[0017] Furthermore, a T-slot is provided on one side of the inner cavity of each inverted cup close to the extension rod, the T-slot is located between the two laser rangefinders, and a buoy extending outside the T-slot is movably connected in the T-slot.

[0018] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0019] 1. This underwater mud surface vertical displacement monitoring device based on multi-source sensors can be installed by simply rowing a boat and placing the displacement monitoring device at the predetermined position. The user then holds the floating cabin with his hands and starts the drive motor. The installation is simple and convenient. After installation, due to the special structure of the stabilizing plate, part of the soil drilled out by the drill bit will be covered on the stabilizing plate, further improving the stability of the stabilizing plate.

[0020] 2. This underwater mud surface vertical displacement monitoring device based on multi-source sensors can record the vertical displacement distance of the displacement monitoring device through the combination of laser radar and detection ring. At the same time, it can record the internal and external air pressure difference through the external air pressure sensor and the internal air pressure sensor, so as to better control the rotation of the drive motor. When the internal and external air pressures are consistent, the specific movement distance can be easily obtained by recording the number of rotations of the drive motor and the pitch of the adjustment rod, thereby obtaining the relative displacement distance of the river water and the riverbed, and the record is more comprehensive.

[0021] 3. The underwater mud surface vertical displacement monitoring device based on multi-source sensors has an inverted cup structure, which can reduce the impact of waves on the detection results and improve monitoring accuracy.

[0022] 4. This underwater mud surface vertical displacement monitoring device based on multi-source sensors, the laser rangefinder and the buoy can play an auxiliary role in the results of the external air pressure sensor and the internal air pressure sensor. By monitoring from different angles through multiple sensors and then summarizing the results, the accuracy of monitoring can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 Schematic diagram of the structure of the displacement monitoring device of the present invention;

[0025] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle:

[0027] Figure 5 It is a three-dimensional appearance diagram of the mounting portion of the present invention.

[0028] In the figure: 1 river bank, 2 river bottom, 3 laser radar, 4 monitoring component, 401 stabilizing block, 402 floating chamber, 403 extension rod, 404 monitoring part, 4041 inverted cup, 4042 threaded plug, 4043 external air pressure sensor, 4044 internal air pressure sensor, 4045 laser rangefinder, 405 detection ring, 5 transmission mechanism, 501 adjusting rod, 502 switching part, 5021 transmission rod, 5022 adjustment part, 5023 installation part, 503 drive motor, 504 stabilizing rod, 6 stabilizing component, 601 stabilizing seat, 602 locking part, 603 stabilizing plate, 604 water pressure sensor, 605 drill bit. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1 to 3 In this embodiment, a multi-source sensor-based underwater mud surface vertical displacement monitoring device includes two riverbanks 1, two riverbanks 1, a riverbed 2 fixed between the two riverbanks 1, river water located between the two riverbanks 1 and on top of the riverbed 2, and multiple displacement monitoring devices installed on top of the riverbed 2. The displacement monitoring devices can effectively detect changes in the distance of the river water relative to the riverbed 2. Multiple laser radars 3 are fixed on the top of each of the two riverbanks 1. Each displacement monitoring device includes a stabilizing assembly 6 fixed to the top of the riverbed 2. The stabilizing assembly 6 provides good support and positioning, effectively improving overall stability. The inner bottom wall of the stabilizing assembly 6 is provided with a transmission mechanism 5 that is easy to install and extends outside the stabilizing assembly 6. The top of the transmission mechanism 5 is provided with a monitoring assembly 4 that improves detection accuracy and extends outside the river water. Multiple sensors are installed on the monitoring assembly 4 to effectively improve detection accuracy. Two limit pins are movably connected to the monitoring assembly 4 and pass through the monitoring assembly 4. The limit pins can ensure smooth installation of the device. Both limit pins extend into the transmission mechanism 5.

[0031] In addition, each monitoring component 4 includes a stabilizing block 401 fixed to the top of the adjusting rod 501, and a floating cabin 402 is fixed to the outside of the stabilizing block 401. The floating cabin 402 can provide stable buoyancy and reduce the installation burden of the user. An extension rod 403 is fixed to the top of the stabilizing block 401. The extension rod 403 serves as a reminder and can provide sufficient space for the detection ring 405. Two monitoring parts 404 are provided in the stabilizing block 401 and pass through the stabilizing block 401. The two monitoring parts 404 are respectively located on the left and right sides of the adjusting rod 501. A detection ring 405 is fixed to the outer surface of the extension rod 403 and above the two monitoring parts 404. The height change of the detection ring 405 is recorded by the laser radar 3, which can effectively record the height change of the displacement monitoring device.

[0032] It should be further explained that each monitoring part 404 includes an inverted cup 4041 that passes through the stabilizing block 401. The bottom of the inverted cup 4041 is open, which facilitates the entry of external water into the inverted cup 4041. A threaded hole is provided on the top wall of the inverted cup 4041 and passes through the top wall of the inverted cup 4041. A threaded plug 4042 that passes through the threaded hole is threadedly connected to the threaded hole. During installation, the two threaded plugs 4042 need to be unscrewed to balance the internal and external pressures and help the river water enter the inverted cup 4041 smoothly. An internal air pressure sensor 4044 and an external air pressure sensor 4043 are respectively fixed on the inner and outer walls of the inverted cup 4041. Two laser rangefinders 4045 are fixed on the side of the inner cavity of each inverted cup 4041 close to the extension rod 403. The internal air pressure sensor 4044, the external air pressure sensor 4043 and the two laser rangefinders 4045 can effectively improve the accuracy of liquid level detection in the inverted cup 4041.

[0033] It can be known that a T-slot is provided on one side of the inner cavity of each inverted cup 4041 close to the extension rod 403. The T-slot is located between the two laser rangefinders 4045. A buoy extending outside the T-slot is movably connected in the T-slot. The T-slot can limit the buoy to ensure that the laser rangefinder 4045 can detect the position of the buoy in real time, thereby improving the stability of the laser rangefinder 4045.

[0034] In this embodiment, when the air pressure inside the inverted cup 4041 changes, the height of the monitoring component 4 is adjusted by controlling the transmission mechanism 5. The height adjustment distance is the distance that the river water drops or rises relative to the riverbed 2.

[0035] Please refer again Figures 1 to 2 and Figures 4 to 5In order to improve the convenience of installation, each transmission mechanism 5 in this embodiment includes an adjusting rod 501 fixed to the bottom of the monitoring component 4, and a switching part 502 extending to the outside of the bottom wall of the adjusting rod 501 is provided on the inner side of the adjusting rod 501. Controlling the opening and closing of the switching part 502 can smoothly control the transmission direction of the power of its driving motor 503. The switching part 502 extends into the stable seat 601, and the outer surface of the switching part 502 is movably connected with a stable rod 504. The stable rod 504 extends into the stable seat 601 and is threadedly connected to the inner wall of the stable seat 601. When the stable seat 601 rotates and the stable rod 504 does not move, it can help the stable seat 601 to move downward and rotate smoothly, stabilizing The rod 504 extends to the outer surface of the adjusting rod 501 and is threadedly connected to the adjusting rod 501. A drive motor 503 is fixed to the top of the stabilizing plate 603. The drive motor 503 provides stable power for the power transmission of the transmission mechanism 5. The drive motor 503 is located on the inner side of the stabilizing seat 601. The output of the drive motor 503 is fixed to the switching part 502. The switching part 502 is used to control the transmission of power, further realizing the height adjustment of the monitoring component 4 or the fixed installation of the stabilizing component 6. The two locking blocks are both located on the outside of the stabilizing rod 504. A battery is fixed on the top of the stabilizing plate 603 and between the drive motor 503 and the stabilizing seat 601. The battery can provide stable energy for the entire device.

[0036] In addition, each switching part 502 includes a transmission rod 5021 fixed to the output shaft of the drive motor 503, and the transmission rod 5021 is provided with a mounting portion 5023 located on the inner side of the stabilizing rod 504. When the rotation speed of the transmission rod 5021 is relatively fast, the mounting portion 5023 can transmit power to the stabilizing rod 504. Since the stabilizing rod 504 is limited at this time, the drive motor 503 can drive the stabilizing seat 601 to rotate, and the transmission rod 5021 extends into the adjusting rod 501. An adjustment portion 5022 is provided at the top of the transmission rod 5021 and located inside the adjusting rod 501. A sealed bearing is fixed to the outer surface of the transmission rod 5021. The sealed bearing is used to improve the sealing performance, thereby effectively protecting the drive motor 503. The outer surface of the sealed bearing is fixed to the inner wall of the stabilizing seat 601.

[0037] It can be known that a stabilizing hole is provided on the top of each transmission rod 5021, and each adjustment part 5022 includes a secondary electric push rod fixed to the inner wall of the stabilizing hole. The secondary electric push rod is used to control the lifting and lowering of the connecting frame. The output end of the secondary electric push rod extends outside the stabilizing hole. The top of the secondary electric push rod is fixed with a connecting frame. The outer surface of the transmission rod 5021 is rotatably connected to the driving gear through the bearing. The bearing can ensure that when the connecting frame is not lowered, the power on the transmission rod 5021 will not be transmitted to the driving gear, thereby playing a role in controlling power transmission. The driving gear is meshed with the inner wall of the adjustment rod 501, and the connecting frame passes through the driving gear.

[0038] It should be further explained that spring holes are provided on the left and right sides of each transmission rod 5021, and each mounting portion 5023 includes two connecting springs fixed to the inner walls of the two spring holes respectively. The connecting springs play a connecting role to ensure that when the speed of the transmission rod 5021 is relatively low, its centripetal force cannot overcome the elastic force of the connecting springs, thereby ensuring continuous and stable operation of the device. The two connecting springs are fixed with connecting blocks extending outside the spring holes on the opposite sides. The outer side of the connecting block is arc-shaped, and a plurality of first-level external teeth are fixed on the outer side of the connecting block. A plurality of first-level internal teeth adapted to the first-level external teeth are fixed on the inner side of the stabilizing rod 504. When the speed of the transmission rod 5021 becomes faster, the centripetal force becomes larger. At this time, the first-level external teeth are engaged with the first-level internal teeth, and the limiting effect of the two limit pins is cooperated to ensure the stable rotation of the stabilizing component 6.

[0039] In addition, each stabilizing component 6 includes a stabilizing plate 603 that fits with the top of the riverbed 2. The stabilizing plate 603 is used to improve the overall stability of the stabilizing component 6. A drill bit 605 extending into the riverbed 2 is fixed to the bottom of the stabilizing plate 603. The drill bit 605 can be smoothly drilled into the riverbed 2 to ensure a stable and reliable connection. A stabilizing seat 601 coaxial with the drill bit 605 is fixed to the top of the stabilizing plate 603. Water pressure sensors 604 are fixed on both sides of the stabilizing seat 601. The water pressure sensor 604 plays an auxiliary role and is used to calibrate the height calculated by the transmission mechanism 5, so as to effectively ensure that the result is accurate and reliable. Two locking parts 602 located on the outside of the transmission mechanism 5 are provided on the top of the stabilizing seat 601. A plurality of inclined mud discharge holes are provided on the stabilizing plate 603, and the mud discharge holes are convenient for mud discharge.

[0040] Furthermore, each locking portion 602 includes a waterproof shell fixed to the top of the stabilizing seat 601. The waterproof shell can effectively protect the first-level electric push rod. The first-level electric push rod is fixed to the inner bottom wall of the waterproof shell. The output end of the first-level electric push rod passes through the side wall of the waterproof shell close to the transmission mechanism 5. A waterproof hole is opened on the waterproof shell. A sealing ring is fixed on the inner side of the drain hole. The output end of the first-level electric push rod passes through the waterproof shell through the waterproof hole. The output end of the first-level electric push rod is away from one end of the first-level electric push rod and is located outside the waterproof shell. A semicircular locking block is fixed. A friction pad is fixed on the inner side of each locking block. The friction pad is used to increase friction.

[0041] In this embodiment, during installation, disconnecting the switching portion 502 and increasing the rotation speed of the driving motor 503 can cause the mounting portion 5023 to engage. Due to the limiting effect of the stabilizing rod 504, the stabilizing assembly 6 can be installed smoothly and stably.

[0042] It can be understood that when the laser radar 3 detects the first height change, the value at this time is the height of the riverbed 2. If the monitoring component 4 is adjusted to continue to move downward at this time, it means that the water level drop is greater than the height of the riverbed 2, and the river water is lost. At this time, the height calculated by the transmission mechanism 5 is the height of the water level drop. After the final adjustment is completed, the final height monitored by the laser radar 3 is the sum of the height of the river water drop and the height of the riverbed 2 drop. The combination of the three can further improve the detection accuracy.

[0043] The electrical components mentioned herein are all electrically connected to a controller and a power supply. The control method of the present invention is implemented by the controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The power supply provided by the battery is also common knowledge in the art. The present invention is primarily used to protect mechanical devices, so the control method and circuit connection will not be explained in detail in the present invention.

[0044] The working principle of the above embodiment is:

[0045] (1) During installation, the user only needs to throw the displacement monitoring device into the river water on the boat, then hold the floating cabin 402 with both hands and start the driving motor 503. At this time, the driving motor 503 will drive the transmission rod 5021 on it to rotate. At this time, the connecting frame on the adjustment part 5022 is located above the driving gear. Due to the presence of the bearing, the transmission rod 5021 has no load at this time. When the speed of the driving motor 503 is accelerated, the centripetal force is greater than the elasticity of the connecting spring, which will cause the two connecting blocks to move outward, causing the first-level outer teeth on the outside of the connecting block to engage with the first-level inner teeth. At this time, most of the connecting block is still in the spring hole, ensuring stable power output. Due to the action of the two limit pins, the stabilizing rod 504 will not rotate at this time, and the power is reversed. It acts on the drive motor 503, prompting the drive motor 503 to rotate, further driving the stabilizing seat 601 and the stabilizing plate 603 and the drill bit 605 thereon to rotate. Due to the threaded connection between the stabilizing seat 601 and the stabilizing rod 504, the drill bit 605 can move downward while rotating, thereby successfully drilling the silt and the relatively hard soil underneath it, and the mud is thrown out through the mud discharge holes on the stabilizing plate 603. Finally, when the installation is about to be completed, the speed slows down, the installation part 5023 is disconnected, and the installation is completed. The silt that has not been thrown out will be above the stabilizing plate 603, further improving the stability of the stabilizing plate 603. Then the two limit pins are pulled out, and the two locking parts 602 are activated to prompt the stabilizing rod 504 to be fixed to the stabilizing seat 601.

[0046] (2) When monitoring is being carried out, the distance that the displacement monitoring device descends can be monitored by cooperating with the laser radar 3 and the detection ring 405. At this time, if the external air pressure sensor 4043 and the internal air pressure sensor 4044 detect that the air pressure has not changed or has changed very slightly, and at the same time, the distance to the detection buoy on the laser rangefinder 4045 has not changed or has changed very slightly, and at the same time, the two water pressure sensors 604 detect that the water pressure has changed very slightly, then it means that the riverbed 2 has sunk to a distance that is equal to the distance that the river water has dropped, which is equal to the distance change detected by the laser radar 3.

[0047] (3) When the air pressure detected by the external air pressure sensor 4043 is greater than the air pressure of the internal air pressure sensor 4044, the laser rangefinder 4045 detects that the buoy moves downward, and at the same time the water pressure sensor 604 detects that the water pressure becomes smaller, it means that the distance the river water drops is greater than the distance the riverbed 2 sinks. At this time, the secondary electric push rod prompts the connecting frame to move into the active gear, and the drive motor 503 prompts the transmission rod 5021 to rotate, further transmitting power to the adjustment rod 501, prompting the monitoring component 4 to descend until the results detected by multiple sensors return to their original state and the water pressure sensor 604 remains unchanged. At this time, the height adjustment distance can be calculated by recording the number of rotations of the drive motor 503 and multiplying the result by the pitch of the adjustment rod 501, and the distance the water level drops relative to the riverbed 2 can be obtained, thereby obtaining the distance the water level drops and the distance the riverbed 2 drops.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0049] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A device for monitoring the vertical displacement of an underwater mud surface based on a multi-source sensor, comprising two river banks (1), characterized in that: A river bottom (2) is fixed between the two river banks (1), river water is provided between the two river banks (1) and on top of the river bottom (2), a plurality of displacement monitoring devices are provided on the top of the river bottom (2), and a plurality of laser radars (3) are fixed on the top of the two river banks (1); Each displacement monitoring device comprises a stabilizing component (6) fixed to the top of the riverbed (2); the inner bottom wall of the stabilizing component (6) is provided with a transmission mechanism (5) that is easy to install and extends outside the stabilizing component (6); the top of the transmission mechanism (5) is provided with a monitoring component (4) that improves detection accuracy and extends outside the river water; the monitoring component (4) is movably connected to two limit pins that penetrate the monitoring component (4), and the two limit pins both extend into the transmission mechanism (5); Each of the stabilizing components (6) includes a stabilizing plate (603) that fits against the top of the riverbed (2), a driving motor (503) is fixed to the top of the stabilizing plate (603), each of the transmission mechanisms (5) includes an adjusting rod (501) that is fixed to the bottom of the monitoring component (4), a switching portion (502) extending to the outside of the bottom wall of the adjusting rod (501) is provided on the inner side of the adjusting rod (501), and each of the switching portions (502) includes a transmission rod (5021) that is fixed to the output shaft of the driving motor (503); Each monitoring assembly (4) includes a stabilizing block (401) fixed to the top of the adjusting rod (501), a floating cabin (402) fixed to the outside of the stabilizing block (401), an extension rod (403) fixed to the top of the stabilizing block (401), two monitoring parts (404) penetrating the stabilizing block (401) are provided in the stabilizing block (401), the two monitoring parts (404) are respectively located on the left and right sides of the adjusting rod (501), and a detection ring (405) is fixed on the outer surface of the extension rod (403) and located above the two monitoring parts (404); Each monitoring portion (404) includes an inverted cup (4041) that passes through the stabilizing block (401), the bottom of the inverted cup (4041) is open, a threaded hole that passes through the top wall of the inverted cup (4041) is provided on the top wall of the inverted cup (4041), a threaded plug (4042) that passes through the threaded hole is connected to the inner thread of the threaded hole, an internal air pressure sensor (4044) and an external air pressure sensor (4043) are fixed on the inner wall and outer wall of the inverted cup (4041), respectively, and two laser rangefinders (4045) are fixed on the side of the inner cavity of each inverted cup (4041) close to the extension rod (403).

2. The underwater mud surface vertical displacement monitoring device based on multi-source sensors according to claim 1 is characterized by: A drill bit (605) extending into the riverbed (2) is fixed at the bottom of the stabilizing plate (603), a stabilizing seat (601) coaxial with the drill bit (605) is fixed at the top of the stabilizing plate (603), water pressure sensors (604) are fixed on both the left and right sides of the stabilizing seat (601), two locking portions (602) located outside the transmission mechanism (5) are provided at the top of the stabilizing seat (601), and a plurality of inclined mud discharge holes are opened on the stabilizing plate (603).

3. The underwater mud surface vertical displacement monitoring device based on multi-source sensors according to claim 2 is characterized in that: Each of the locking portions (602) includes a waterproof shell fixed to the top of the stabilizing seat (601), a first-level electric push rod is fixed to the inner bottom wall of the waterproof shell, an output end of the first-level electric push rod passes through the side wall of the waterproof shell close to the transmission mechanism (5), the output end of the first-level electric push rod is away from one end of the first-level electric push rod and a semicircular locking block is fixed outside the waterproof shell, and a friction pad is fixed on the inner side of each of the locking blocks.

4. The underwater mud surface vertical displacement monitoring device based on multi-source sensors according to claim 3 is characterized by: The switching portion (502) extends into the stabilizing seat (601); the outer surface of the switching portion (502) is movably connected to a stabilizing rod (504); the stabilizing rod (504) extends into the stabilizing seat (601) and is threadedly connected to the inner wall of the stabilizing seat (601); the stabilizing rod (504) extends to the outer surface of the adjusting rod (501) and is threadedly connected to the adjusting rod (501); the driving motor (503) is located on the inner side of the stabilizing seat (601); the output of the driving motor (503) is fixed to the switching portion (502); the two locking blocks are both located on the outer side of the stabilizing rod (504); and a battery is fixed on the top of the stabilizing plate (603) and between the driving motor (503) and the stabilizing seat (601).

5. The underwater mud surface vertical displacement monitoring device based on multi-source sensors according to claim 4 is characterized in that: The transmission rod (5021) is provided with a mounting portion (5023) located inside the stabilizing rod (504), the transmission rod (5021) extends into the adjusting rod (501), an adjustment portion (5022) is provided at the top of the transmission rod (5021) and located inside the adjusting rod (501), a sealed bearing is fixed to the outer surface of the transmission rod (5021), and the outer surface of the sealed bearing is fixed to the inner side wall of the stabilizing seat (601).

6. The underwater mud surface vertical displacement monitoring device based on multi-source sensors according to claim 5 is characterized by: A stabilizing hole is provided at the top of each transmission rod (5021), and each adjustment portion (5022) includes a secondary electric push rod fixed to the inner side wall of the stabilizing hole, the output end of the secondary electric push rod extends outside the stabilizing hole, a connecting frame is fixed to the top of the secondary electric push rod, the outer surface of the transmission rod (5021) is rotatably connected to a driving gear through a bearing, the driving gear is meshed with the inner side wall of the adjustment rod (501), and the connecting frame passes through the driving gear.

7. The underwater mud surface vertical displacement monitoring device based on multi-source sensors according to claim 5 is characterized by: Each transmission rod (5021) is provided with spring holes on both sides, and each mounting portion (5023) includes two connecting springs fixed to the inner walls of the two spring holes respectively. A connecting block extending outside the spring hole is fixed on the opposite sides of the two connecting springs, and the outer side of the connecting block is in an arc shape. A plurality of primary external teeth are fixed on the outer side of the connecting block, and a plurality of primary internal teeth adapted to the primary external teeth are fixed on the inner side of the stabilizing rod (504).

8. The underwater mud surface vertical displacement monitoring device based on multi-source sensors according to claim 1 is characterized in that: A T-slot is provided on one side of the inner cavity of each inverted cup (4041) close to the extension rod (403), the T-slot being located between the two laser rangefinders (4045), and a buoy extending outside the T-slot being movably connected in the T-slot.

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