Water level sounding device for river dredging

Abstract

The present invention discloses a water level sounding device for river dredging, which relates to the technical field of water level sounding. The device comprises a balancing mechanism, a measuring mechanism for measuring the water level, a shore module, a camera, and a controller. The balancing mechanism comprises a base, a lifting rod, a balancing plate, and a level bubble, wherein the level bubble is fixed to the balancing plate and located at the center of the balancing plate. The measuring mechanism comprises a ruler plate, a prompting assembly for indicating whether the ruler plate is submerged in water, and a driving unit for driving the ruler plate to rise and fall. The ruler plate is provided with scales distributed along its length, the ruler plate is perpendicular to the balancing plate and is slidingly connected to the balancing plate. The prompting assembly comprises a first electrode needle, a second electrode needle, and a prompting light. The first and second electrode needles extend toward the end of the ruler plate extending toward the water surface, and the prompting light is electrically connected to the first and second electrode needles. The present invention has the effect of making the measured data more accurate.

Description

Technical Field

[0001] The present application relates to the technical field of water level sounding, and in particular to a water level sounding device for river dredging. Background Art

[0002] Dredging is the process of removing silt from the bottom of a river in order to clear it. Before dredging, the water level of the river is measured to determine the depth to be removed.

[0003] Traditionally, water levels are measured using a water gauge, which should be inserted vertically into the water during measurement. This process is manual, but the water level in the river is not uniform. The terrain, the curvature of the river, etc. will lead to different water levels in different locations. This requires staff to measure at multiple points. In theory, it is possible to measure while walking along the shore, but in reality there will be various facilities on both sides of the river, and some locations may not be accessible.

[0004] At present, water level, water depth and siltation can be measured by unmanned survey vessels. However, existing unmanned survey vessels often need to be equipped with satellite positioning systems, single-beam / multi-beam depth-sounding radars, obstacle avoidance radars and other electrical components, and the overall price is relatively high. However, when streets and scenic spots encounter silt removal needs, there is actually no need for the above-mentioned functional requirements. In other words, the existing survey vessels are not cost-effective and have relatively low adaptability to the required scenarios. Therefore, this application proposes a new technical solution. Summary of the Invention

[0005] In order to improve the adaptability of the device during the river dredging measurement process, the present application provides a water level depth measuring device for river dredging.

[0006] This application provides a water level measurement device for river dredging, which adopts the following technical solution:

[0007] A water level sounding device for river dredging includes a balancing mechanism, a measuring mechanism for measuring the water level, a shore module, a camera, and a controller. The balancing mechanism includes a base as a float, a lifting rod, a balancing plate, and a leveling bubble. The lifting rods are provided in plurality, one end of which is connected to the base and the other end is movably connected to the balancing plate. The leveling bubble is fixed to the balancing plate and located at the center of the balancing plate.

[0008] The measuring mechanism includes a ruler, a prompting assembly for indicating whether the ruler is inserted into the water, and a driving unit for driving the ruler to rise and fall. The balance plate extends beyond the side wall of the base, and a guide hole for the ruler to pass through is opened in the thickness direction of the balance plate. The ruler is provided with scales distributed along the length direction. The ruler is perpendicular to the balance plate and passes through the guide hole to be slidably connected to the balance plate. The top end of the ruler is folded outward to form a limit. The prompting assembly includes an electrode needle 1, an electrode needle 2, and a prompting light. The electrode needle 1 and the electrode needle 2 extend toward the end of the ruler extending toward the water surface. The prompting light is electrically connected to the electrode needle 1 and the electrode needle 2. The prompting light is installed on the side wall of the ruler near the top end. The controller is electrically connected to the driving unit.

[0009] The balance board is equipped with a camera for photographing a level bubble and a ruler. The camera is located on the balance board. The shore module includes a personal terminal, a remote controller wirelessly connected to the controller, and a laser rangefinder used as a shore tilt and level detection and measurement mechanism.

[0010] Optionally, the lifting rod includes an electric cylinder, a cylinder body of the electric cylinder is fixed to the base and an end of the telescopic rod is hinged to the balance plate, and the electric cylinder is electrically connected to the controller.

[0011] Optionally, the balance plate is provided with a plurality of grooves around the horizontal bubble, and the length of the grooves extends radially along the horizontal bubble. The balance plate is provided with a leveling component, and the leveling component includes a steel ball and a thin film pressure sensor. The thin film pressure sensor is fixed to the inner wall of the groove away from the horizontal bubble, and the thin film pressure sensor is electrically connected to the controller.

[0012] Optionally, the controller is configured as follows:

[0013] Define the position of the horizontal bubble as the origin of the three-dimensional space coordinate system;

[0014] Take four sampling points evenly distributed around the origin on the balance board and call them A, B, C, and D respectively. A and B are symmetrical, and C and D are symmetrical. The coordinates of A are (X1, Y1, Z1), the coordinates of B are (X2, Y2, Z2), the coordinates of C are (X3, Y3, Z3), and the coordinates of D are (X4, Y4, Z4).

[0015] If Z1>Z2, the electric cylinder located on the side of the origin away from B will be retracted until the pressure value fed back by the film pressure sensor reaches the set standard value; if Z1<Z2, the electric cylinder located on the side of the origin away from A will be retracted until the pressure value fed back by the film pressure sensor reaches the set standard value;

[0016] If Z3>Z4, the electric cylinder located on the side of the origin away from D will be contracted until the pressure value fed back by the film pressure sensor reaches the set standard value; if Z3<Z4, the electric cylinder located on the side of the origin away from C will be contracted until the pressure value fed back by the film pressure sensor reaches the set standard value.

[0017] Optionally, the controller is electrically connected to the prompt component and the drive unit, and is configured to: determine whether a preset automatic adjustment instruction is received, and if so, stop the electric cylinder and the drive unit when the feedback from the prompt component indicates contact with the water surface.

[0018] Optionally, the interior of the ruler is hollow and is provided with multiple groups of prompt components. Electrode needle 1 and electrode needle 2 in each group of the prompt components are arranged along the length direction of the ruler plate and are respectively connected to the positive and negative poles of the corresponding prompt lights. The prompt lights are arranged along the length direction of the ruler plate and are located at a section of the ruler plate away from the water surface.

[0019] Optionally, a laser is installed on the laser rangefinder, and the laser light of the laser is parallel to the detection path of the laser rangefinder.

[0020] Optionally, the bottom surface of the groove increases in height from the center toward both ends.

[0021] To sum up, the present application includes the following beneficial technical effects: a combination of laser rangefinders, spirit levels, etc. allows workers to stand on the shore to measure water levels at various locations in the river channel without the need for radar or beam detectors, so it is more cost-effective and can improve the adaptability of the device to actual needs during the river dredging and measurement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of this application;

[0023] Figure 2 It is a structural diagram of the prompt component;

[0024] Figure 3 This is a diagram of the controller connections.

[0025] Explanation of the accompanying reference numerals: 1. Balancing mechanism; 11. Base; 12. Balancing plate; 13. Lifting rod; 14. Level bubble; 15. Leveling assembly; 151. Steel ball; 2. Measuring mechanism; 21. Ruler; 22. Prompt assembly; 221. Electrode needle 1; 222. Electrode needle 2; 223. Prompt light; 3. Controller. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0027] The embodiment of the present application discloses a water level depth measuring device for river dredging.

[0028] Reference Figure 1 The water level sounding device for river dredging includes a balancing mechanism 1 and a measuring mechanism 2.

[0029] The balancing mechanism 1 comprises a base 11, a lifting rod 13, a balancing board 12, and a leveling bubble 14. In this embodiment, the base 11 comprises a hollow cylinder at the top and an inverted frustum with a counterweight at the bottom. Made of plastic or other materials, the base 11 can be stably floated above the water surface thanks to the counterweight. One end of the lifting rod 13 is mounted on the base 11, and the other end is spherically hinged to the balancing board 12. This ensures that the balancing board 12 will not break due to angle changes when the lifting rod 13 is raised or lowered. There are multiple lifting rods 13. The leveling bubble 14 is fixed to the center of the balancing board 12, allowing for a more intuitive assessment of the elevation of the balancing board 12 in the four principal directions of a two-dimensional coordinate system drawn around the center point.

[0030] The measuring mechanism 2 includes a ruler 21, a prompt assembly 22 and a drive unit. The balance plate 12 extends out of the base 11 and is formed with a guide portion, and the guide portion is vertically opened with a hole along the thickness direction for the ruler 21 to pass through. The ruler 21 is marked with a scale indicating the water level. The ruler 21 is slidably connected to the balance plate 12 and is perpendicular to the balance plate 12. The top end of the ruler 21 is folded outward to form a limit, which can effectively prevent the ruler 21 from slipping during measurement.

[0031] In one embodiment, the above-mentioned driving unit can be a reduction motor and a gear. The reduction motor is built into the balance plate 12 and the output shaft is fixed with the gear. A rack structure is formed on a side wall of the scale plate 21, and the gear engages with the rack. Therefore, when the reduction motor rotates forward and reverse, the scale plate 21 can be raised and lowered; in order to ensure control accuracy, the reduction motor is preferably a servo model.

[0032] Reference Figure 1 and Figure 2 The prompt component 22 includes an electrode needle 1 221, an electrode needle 222 and a prompt light 223. The electrode needle 1 221 and the electrode needle 2 222 extend toward the end of the ruler 21 extending toward the water surface, and the extended ends of the electrode needle 1 221 and the electrode needle 2 222 are flush with the end of the ruler 21. A battery is fixed in the ruler 21, and the prompt light 223, the electrode needle 1 221 and the electrode needle 2 222 are connected in series with the battery. The prompt light 223 is located on the side wall near the top of the ruler 21, which makes it easier to observe whether the prompt light 223 is on.

[0033] Adjusting the length of the lifting rod 13 changes the height of the balance board 12, allowing it to be leveled as needed. The level bubble 14 allows you to check whether the balance board 12 is level. When the balance board 12 is level, the measured value will be more accurate. The ruler 21 passes through the hole in the balance board 12 and extends vertically into the water surface. When the electrode needles 1 221 and 2 222 contact the water surface, they are energized, and the indicator light 223 illuminates, allowing for more timely and accurate water level recording.

[0034] Reference Figure 3 Because the device is to be put into the river, a camera is installed on the balance board 12 to allow the staff to see it. The camera should be a wireless network model. The camera shoots the level bubble 14 and the ruler 21, and the staff connects to the camera through the mobile phone network to realize real-time viewing.

[0035] This application also includes a controller 3 and a shore-side module. The controller 3 is mounted within the base 11 and connected to the motor. The shore-side module includes a personal terminal, such as a mobile phone, a remote control for wirelessly connecting to the controller 3, and a laser rangefinder. The remote control controls the motor rotation in this embodiment, similar to a remote-controlled toy car. Remote control technology is currently available and will not be described in detail. The laser rangefinder can be fixed to the remote control or its circuit components can be removed and installed in the same housing for easy handling.

[0036] When using:

[0037] The staff first observes the spirit level 14 on the shore to level the balance board 12, then ties the device with a rope, and then puts it into the river channel and pushes it to the appropriate position with a bamboo pole. Then, the staff controls the drive unit through the remote control to drive the ruler 21 to descend, and checks the camera image on the mobile phone. When the prompt light 223 lights up, the staff stops and reads the scale; then, the staff uses the laser rangefinder to tilt and horizontally detect the distance to a specified part on the ruler 21 of the device, and then the trigonometric function can be used (that is, the height side is calculated when the hypotenuse and horizontal side are known); assuming that the distance between a position K on the shore and the water surface is h1 when the water level is standard, and the water level is h0 at this time, then the height of K = h0 + h1; the water level at this time is (h0 + h1) - height difference - the length from the specified part of the ruler 21 to the lowest end.

[0038] According to the above settings, this device can help staff know the water level at various locations in the river, and does not require radar or beam detectors, so it is more cost-effective and can improve the adaptability of the device to actual needs during the river dredging and measurement process.

[0039] In order to use the laser rangefinder more accurately, a laser (i.e., a lamp that can emit a visible laser beam) is fixed on the laser rangefinder, and the laser beam of the laser is parallel to the detection path of the laser rangefinder and the two are as close as possible.

[0040] According to the above configuration, the staff can observe the landing point of the laser to assist in determining the landing point of the detection path of the laser rangefinder relative to the device.

[0041] In one embodiment of the present application, the lifting rod 13 includes an electric cylinder, and the cylinder body of the electric cylinder is placed in the base 11 and the telescopic rod is extended, and the electric cylinder is electrically connected to the controller 3.

[0042] The advantage of the above setting is that the device can be floated into the river and then leveled. If the leveling is wrong before, there is no need to pull the device back with a rope, and the leveling can be done remotely.

[0043] In another embodiment, referring to Figure 1 The balance plate 12 is provided with a plurality of grooves around the level bubble 14, and the length of the grooves extends radially along the level bubble 14. The balance plate 12 is provided with a leveling component 15, and the leveling component 15 includes a steel ball 151 and a thin film pressure sensor. The thin film pressure sensor is fixed to the inner wall of the groove away from the level bubble 14, and the thin film pressure sensor is electrically connected to the controller 3. The controller 3 is configured as follows:

[0044] Define the position of the horizontal bubble 14 as the origin of the three-dimensional space coordinate system;

[0045] Take four sampling points evenly distributed around the origin on the balance board 12 and call them A, B, C, and D respectively. A and B are symmetrical, and C and D are symmetrical. The coordinates of A are (X1, Y1, Z1), the coordinates of B are (X2, Y2, Z2), the coordinates of C are (X3, Y3, Z3), and the coordinates of D are (X4, Y4, Z4);

[0046] If Z1>Z2, the electric cylinder located on the side of the origin away from B will be contracted until the pressure value fed back by the film pressure sensor reaches the set standard value; if Z1<Z2, the electric cylinder located on the side of the origin away from A will be contracted until the pressure value fed back by the film pressure sensor reaches the set standard value; the standard value can be 0, or an interval selected after analysis of the specific situation, which can reduce the possibility of misjudgment due to the existence of a certain pressure.

[0047] If Z3>Z4, the electric cylinder located on the side of the origin away from D will be contracted until the pressure value fed back by the film pressure sensor reaches the set standard value; if Z3<Z4, the electric cylinder located on the side of the origin away from C will be contracted until the pressure value fed back by the film pressure sensor reaches the set standard value.

[0048] The film pressure sensor is electrically connected to the controller 3. The controller 3 can obtain the position of each film pressure sensor and feed back the pressure data detected by the film pressure sensor at each position. According to the data, it analyzes which electric cylinders need to perform telescopic work, thereby controlling different lifting rods 13 to rise or fall until the pressure value fed back by the film pressure sensor reaches the set standard value.

[0049] According to the above arrangement, on the one hand, manual adjustment of the balance board 12 is unnecessary, and on the other hand, the balance board 12 can be automatically adjusted during the shaking process in the water.

[0050] Furthermore, the aforementioned prompt component 22 and drive unit (i.e., motor) are each electrically connected to the controller 3. For example, the controller output and input terminals of the prompt component 22 are each connected to an electrode pin. When the controller contacts the water surface, a current / voltage signal is returned from the input terminal. In this case, the controller 3 is configured to determine whether a preset automatic adjustment command has been received. If so, the controller 3 stops the electric cylinder and drive unit when the prompt component 22 indicates contact with the water surface.

[0051] According to the above arrangement, firstly, if the staff does not send an automatic adjustment command to the controller 3 via the remote control (e.g., turning on a function switch), the electric cylinder will not move repeatedly when the device is moved; secondly, when measuring, the balance board 12 and the ruler board 21 will stop and be locked as soon as they touch the water surface to prevent them from changing and affecting the measurement results.

[0052] In another embodiment, the bottom surface of the groove increases in height from the center toward both ends, so that the steel ball 151 can be kept in the center of the groove when horizontal, thereby reducing the possibility that the electric cylinder can still work when the balance board 12 remains horizontal, and also reducing the interference caused by small shaking.

[0053] In another embodiment of the present application, referring to Figure 1 The interior of the ruler 21 is hollow and is provided with multiple groups of prompt components 22, which are arranged in parallel. The electrode needle 1 221 and the electrode needle 2 222 in each group of prompt components 22 are arranged along the length direction of the ruler 21 and are connected in series with the prompt lights 223 in the same group. The prompt lights 223 in each group of prompt components 22 are also arranged along the length direction of the ruler 21 and are located at a section of the ruler 21 away from the water surface.

[0054] When ruler 21 just touches the water surface, electrode pins 1 221 and 2 22 are energized, causing the connected indicator light 223 to illuminate, indicating that the surface has been reached and a reading is required. As ruler 21 continues to extend deeper, more wires are energized, and more indicator lights 223 illuminate, indicating that ruler 21 has been extended too far into the water. The measurement data is inaccurate and requires readjustment to roughly assess the extent of the overshoot. This design helps calibrate the measurement data of ruler 21 to ensure it reflects the data immediately after reaching the water surface, resulting in more accurate data.

[0055] Reference Figure 1 The bottom of the base 11 is equipped with a plurality of universal wheels. Since the water level measurement needs to be frequently changed, the universal design is more convenient for movement. The base 11 is hollow inside, so it can be more portable when moving.

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A water level sounding device for river dredging, characterized by: The invention comprises a balancing mechanism (1), a measuring mechanism (2) for measuring water level, a shore module, a camera and a controller (3), wherein the balancing mechanism (1) comprises a base (11) as a floating body, a lifting rod (13), a balancing plate (12) and a level bubble (14), wherein the lifting rod (13) is provided in plurality and one end of the lifting rod (13) is connected to the base (11) and the other end is movably connected to the balancing plate (12) upward; the level bubble (14) is fixed to the balancing plate (12) and is located at the center of the balancing plate (12); The measuring mechanism (2) includes a ruler (21), a prompting assembly (22) for prompting whether the ruler (21) is extended into water, and a driving unit for driving the ruler (21) to rise and fall. The balance plate (12) extends beyond the side wall of the base (11), and the balance plate (12) is provided with a guide hole for the ruler (21) to pass through in the thickness direction. The ruler (21) is provided with scales distributed along the length direction. The ruler (21) is perpendicular to the balance plate (12) and passes through the guide hole to be slidably connected to the balance plate (12). The top end of the plate (21) is folded outward to form a limit, and the prompt component (22) includes an electrode needle 1 (221), an electrode needle 2 (222) and a prompt light (223), wherein the electrode needle 1 (221) and the electrode needle 2 (222) extend toward the end of the ruler (21) extending toward the water surface, and the prompt light (223) is electrically connected to the electrode needle 1 (221) and the electrode needle 2 (222), and the prompt light (223) is installed on the side wall of the ruler (21) near the top end, and the controller (3) is electrically connected to the drive unit; The balance board (12) is equipped with a camera for photographing a level bubble (14) and a ruler (21), and the camera is located on the balance board (12). The shore module includes a personal terminal, a remote controller wirelessly connected to the controller, and a laser rangefinder used as a shore tilt and level detection and measurement mechanism; The lifting rod (13) includes an electric cylinder, the cylinder body of the electric cylinder is fixed to the base (11) and the telescopic rod end is hinged to the balance plate (12), and the electric cylinder is electrically connected to the controller (3); The balancing plate (12) is provided with a plurality of grooves around the level bubble (14), the length of the grooves extending radially along the level bubble (14), the balancing plate (12) is provided with a leveling component (15), the leveling component (15) comprising a steel ball (151) and a thin film pressure sensor, the thin film pressure sensor being fixed to the inner wall of the groove away from the level bubble (14), and the thin film pressure sensor being electrically connected to the controller (3); The controller (3) is configured as follows: The position of the horizontal bubble (14) is defined as the origin of the three-dimensional space coordinate system; Take four sampling points evenly distributed around the origin on the balance board (12), and call them A, B, C, and D respectively, and A and B are symmetrical, C and D are symmetrical, the coordinates of A are (X1, Y1, Z1), the coordinates of B are (X2, Y2, Z2), the coordinates of C are (X3, Y3, Z3), and the coordinates of D are (X4, Y4, Z4); If Z1>Z2, the electric cylinder located on the side of the origin away from B will be retracted until the pressure value fed back by the film pressure sensor reaches the set standard value; if Z1<Z2, the electric cylinder located on the side of the origin away from A will be retracted until the pressure value fed back by the film pressure sensor reaches the set standard value; If Z3>Z4, the electric cylinder located on the side of the origin away from D will be contracted until the pressure value fed back by the film pressure sensor reaches the set standard value; if Z3<Z4, the electric cylinder located on the side of the origin away from C will be contracted until the pressure value fed back by the film pressure sensor reaches the set standard value.

2. The water level sounding device for river dredging according to claim 1, characterized in that: The controller (3) is electrically connected to the prompt component (22) and the drive unit, and is configured to determine whether a preset automatic adjustment instruction is received, and if so, stop the electric cylinder and the drive unit when feedback from the prompt component (22) indicates contact with the water surface.

3. The water level sounding device for river dredging according to claim 1, characterized in that: The ruler (21) is hollow inside and is provided with a plurality of groups of prompt components (22). Electrode needle 1 (221) and electrode needle 2 (222) in each group of the prompt components (22) are arranged along the length direction of the ruler (21) and are respectively connected to the positive and negative poles of corresponding prompt lights (223). The prompt lights (223) are arranged along the length direction of the ruler (21) and are located at a section of the ruler (21) away from the water surface.

4. The water level sounding device for river dredging according to claim 1, characterized in that: The laser rangefinder is equipped with a laser, and the laser light of the laser is parallel to the detection path of the laser rangefinder.

5. The water level sounding device for river dredging according to claim 1, characterized in that: The bottom surface of the groove increases in height from the center to both ends.

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