A water level automatic monitoring device

Abstract

This patent application belongs to the field of hydrogeological monitoring technology, and specifically relates to an automatic water level monitoring device, including a laser ranging module, a clock controller, a wireless transmission module and a floating block positioning component. The floating positioning component aligns a floating body with the laser ranging module. The laser ranging module is used to monitor the distance data of the floating body. The clock controller sends the distance data to a server through a wireless transmission module according to the time frequency. Due to the limit of the floating positioning component, the floating body is always aligned with the laser ranging module and floats on the water surface. The laser ranging module monitors the distance data of the floating body, thereby obtaining the liquid level, which is remotely transmitted to the server through the wireless transmission module, so that the monitoring personnel can remotely observe the water level and can issue timely warnings through the server.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogeological monitoring, and in particular to an automatic water level monitoring device. Background Art

[0002] Hydrological monitoring stations are mainly used to collect and monitor various hydrological data in natural waters. These data are crucial for water resources management, water environment protection, flood prevention and early warning, water conservancy project planning and maintenance, etc.

[0003] Existing water level monitoring generally uses water level meters for monitoring, which requires regular manual observation and recording. It is not easy to detect water level abnormalities in the first place and issue timely warnings. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an automatic water level monitoring device that can replace manual monitoring and provide timely warning.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A water level automatic monitoring device comprises a laser ranging module, a clock controller, a wireless transmission module and a floating positioning component. The floating positioning component aligns a floating body with the laser ranging module. The laser ranging module is used to monitor the distance data of the floating body. The clock controller starts the laser ranging module according to the clock frequency and transmits the monitored laser ranging module to a server. The server monitors the water level according to the distance data.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] Due to the limitation of the floating positioning component, the floating body is always aligned with the laser ranging module and floats on the water surface. The laser ranging module monitors the distance data of the floating body to obtain the liquid level, which is remotely transmitted to the server through the wireless transmission module, so that the monitoring personnel can remotely observe the water level and issue timely warnings through the server.

[0009] As a preferred implementation manner of the present invention, it also includes a user end, and the wireless transmission module transmits the distance data to the user end, and the user end includes a computer end and a mobile phone end.

[0010] Beneficial effects: The monitoring data can be directly transmitted to the user's mobile phone or computer for timely viewing.

[0011] As a preferred embodiment of the present invention, it also includes a power supply module, which uses solar cells to supply power to the laser ranging module and the clock controller.

[0012] Beneficial effects: Power is supplied by solar cells, which realizes automatic power supply and saves energy.

[0013] As a preferred embodiment of the present invention, the floating positioning assembly includes a fixed frame arranged above the water surface, the clock controllers are installed on the fixed frame, a limiting cylinder is vertically arranged on the fixed frame, the lower end of the limiting cylinder extends into the water surface, the floating body is located in the limiting cylinder, and the laser ranging module is arranged at the top of the limiting cylinder.

[0014] Beneficial effects: The floating body is limited by the limiting cylinder, so that the floating body and the laser ranging module are always aligned to ensure the accuracy of measurement; the limiting cylinder is isolated to reduce the impact of water waves on the floating body, thereby improving the accuracy of monitoring.

[0015] As a preferred embodiment of the present invention, the floating positioning assembly includes a counterweight, a reel mechanism, a connecting belt and an auxiliary positioning member, the reel mechanism and the auxiliary positioning member are both installed on the floating body, the reel mechanism is used to reel in or unreel the connecting belt, and the free end of the connecting belt is fixedly connected to the counterweight;

[0016] When the connecting belt is tilted, the auxiliary positioning piece is driven to move laterally, and the laser distance measuring module is used to measure the moving distance of the auxiliary positioning piece and the unwinding length of the connecting belt.

[0017] Working principle: The above scheme can be adopted in rivers and lakes with wider width, when the monitoring point is in the middle position, and in areas where the fixed frame is difficult to set up; when the water flow rate is slow, the connecting belt approaches a vertical state. When the water flow rate becomes faster, the reel mechanism unwinds, so that the floating body floats on the water surface. At this time, the connecting belt is inclined, and the length of the hypotenuse of the connecting belt, the distance between the connecting belt and the laser ranging module, and the vertical distance of the water surface form a right triangle. The laser ranging module can measure the laser ranging module for measuring the moving distance of the auxiliary positioning part and the unwinding length of the connecting belt. The connecting belt forms a first angle with the vertical plane, and the moving distance of the auxiliary positioning part is positively correlated with the first angle. Therefore, the size of the first angle can be obtained, and then the vertical distance can be calculated according to the unwinding length of the connecting belt, and the water level can be known; the water flow velocity is positively correlated with the moving distance of the auxiliary positioning part, and the water flow velocity can be monitored at the same time.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Through the above components, the water level can be monitored in real time, and the measurement error can be reduced when the water flow rate is fast;

[0020] 2. Simultaneously monitor the water flow rate to provide better early warning for disasters.

[0021] As a preferred embodiment of the present invention, the auxiliary positioning member includes a sliding frame, which is slidably mounted on the floating body, and the sliding direction is parallel to the water flow direction. Two limit rods are provided on the sliding frame, and the center lines of the limit rods are perpendicular to the sliding direction. The connecting belt passes between the two limit rods.

[0022] Beneficial effect: When the floating body moves, the angle of the connecting belt changes, which will drive the limit rod on the corresponding side to move, so that the entire sliding frame moves, realizing the conversion of the lateral displacement of the connecting belt, which is convenient for measurement.

[0023] As a preferred embodiment of the present invention, the reel mechanism includes a winding roller and a coil spring, wherein the coil spring is mounted at one end of the winding roller, and when the winding roller is unwinding, the coil spring is compressed.

[0024] Beneficial effect: By setting a coil spring and utilizing the elastic deformation of the coil spring, automatic winding and unwinding can be achieved with low cost.

[0025] As a preferred embodiment of the present invention, the winding mechanism includes a driving motor and a winding roller, one end of the winding roller is fixedly connected to the output shaft of the driving motor, and the other end of the winding roller is provided with a torque sensor. The driving motor drives the winding roller to reel in or unreel according to the value of the torque sensor.

[0026] Beneficial effects: By setting a motor to drive the winding roller to rotate, winding and unwinding can be achieved, and the measurable water level change range is larger; and when installing and recovering the device, it is only necessary to move the device to the specified position, and the motor drives the connecting belt to rotate, so that the counterweight block can be lowered or lifted, and the operation is more convenient.

[0027] As a preferred embodiment of the present invention, measuring holes are evenly spaced on the connecting belt, and the laser ranging module includes a first laser ranging sensor and a second laser ranging sensor. The first laser ranging sensor is aligned with the measurement auxiliary positioning piece, and the second laser ranging sensor is aligned with the connecting belt between the auxiliary positioning piece and the reel mechanism. When the connecting belt is unwound, the measuring holes pass through the measurement area of ​​the second laser ranging sensor.

[0028] Working principle: The principle of laser distance measuring sensor is that the laser diode first emits laser pulses at the target. After being reflected by the target, the laser is scattered in all directions. Part of the scattered light returns to the sensor receiver. The time from the emission of the light pulse to the return reception is processed to determine the target distance; whenever a measuring hole passes through the second laser distance measuring sensor, its monitored value disappears, therefore, the number of measuring holes passing through the second laser distance measuring sensor can be known, and when unwinding, the value increases, and when rewinding, the value decreases. The distance between each measuring hole is known, and the unwinding length of the connecting belt can be obtained.

[0029] Beneficial effect: Water level monitoring can be achieved through the cooperation of two laser distance measuring sensors and measuring holes.

[0030] As a preferred embodiment of the present invention, a through groove is provided on the floating body, the sliding frame includes two frames symmetrically arranged along the through groove, the two limit rods are rotatably installed between the two frames, a positioning plate is fixedly connected between the two frames, and the laser ranging module is used to measure the position of the positioning plate.

[0031] Beneficial effects: by providing the through groove, the connecting belt will not interfere with the movement of the floating body when it is tilted, and a rotatable limit rod is provided between the two frames to reduce the wear between the connecting belt and the limit rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a circuit diagram of a first embodiment of a water level automatic monitoring device of the present invention.

[0033] Figure 2 It is a structural schematic diagram of a first embodiment of a water level automatic monitoring device of the present invention;

[0034] Figure 3 It is a three-dimensional cross-sectional view of a first embodiment of an automatic water level monitoring device of the present invention;

[0035] Figure 4 It is a plan cross-sectional view of a first embodiment of an automatic water level monitoring device of the present invention;

[0036] Figure 5 It is a plan view of a third embodiment of an automatic water level monitoring device of the present invention.

[0037] The reference numerals include: a floating body 11, a dovetail groove 12, a reel mechanism 2, a winding roller 21, a connecting belt 3, a measuring hole 31, an auxiliary positioning member 4, a sliding frame 41, a frame body 411, a positioning plate 412, a limit rod 42, a laser ranging module 5, a first laser ranging sensor 51, a second laser ranging sensor 52, a power supply module 6, a fixing frame 7, and a limit cylinder 8. DETAILED DESCRIPTION

[0038] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0039] In the description of the present application, the terms "first", "second", etc. are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] Embodiment 1:

[0041] See also Figure 1 and Figure 2 As shown, this embodiment discloses an automatic water level monitoring device, including a laser ranging module 5, a clock controller, a wireless transmission module, a floating positioning component and a user end. The floating positioning component aligns the floating body with the laser ranging module 5. The laser ranging module 5 is used to monitor the distance data of the floating body. The clock controller starts the laser ranging module according to the clock frequency, and transmits the monitored laser ranging module to the server. The server monitors the water level according to the distance data. Due to the limit of the floating positioning component, the floating body 11 is always aligned with the laser ranging module 5 and floats on the water surface. The laser ranging module 5 monitors the distance data of the floating body, thereby obtaining the liquid level, which is remotely transmitted to the server through the wireless transmission module, so that the monitoring personnel can remotely observe the water level and can issue a timely warning through the server. The wireless transmission module transmits the distance data to the user end, and the user end includes a computer end and a mobile phone end.

[0042] Among them, the floating positioning component includes a counterweight block, a reel mechanism 2, a connecting belt 3, an auxiliary positioning piece 4 and a laser ranging module 5. The reel mechanism 2 is used to reel in or unreel the connecting belt 3. The free end of the connecting belt 3 is fixedly connected to the counterweight block. When the connecting belt 3 is tilted, it drives the auxiliary positioning piece 4 to move laterally. The laser ranging module 5 is used to measure the moving distance of the auxiliary positioning piece 4 and the unreeling length of the connecting belt 3. In this embodiment, monitoring is performed according to the clock controller. Each time it is started, the counterweight block is rewound and then rewound for monitoring.

[0043] In this embodiment, when the water flow velocity is slow, the connecting belt 3 approaches a vertical state. When the water flow velocity becomes faster, the reel mechanism 2 unwinds, so that the floating body 11 floats on the water surface. At this time, the connecting belt 3 is inclined, and the length of the hypotenuse of the connecting belt 3, the distance between the connecting belt 3 and the laser ranging module 5, and the vertical distance of the water surface form a right triangle. The laser ranging module 5 can measure the moving distance of the auxiliary positioning member 4 and the unwinding length of the connecting belt 3. The connecting belt 3 forms a first angle ( Figure 4 A1), and the moving distance of the measuring auxiliary positioning member 4 is positively correlated with the first angle, so the size of the first angle can be obtained, and then the vertical distance can be calculated according to the unwinding length of the connecting belt 3, and the water level height can be known; the water flow velocity is positively correlated with the moving distance of the measuring auxiliary positioning member 4, and the water flow velocity can be monitored at the same time.

[0044] Among them, see Figure 3As shown, the auxiliary positioning member 4 includes a sliding frame 41, which is slidably installed on the floating body 11, and the sliding direction is parallel to the water flow direction. Two limit rods 42 are provided on the sliding frame 41, and the center lines of the limit rods 42 are perpendicular to the sliding direction. The connecting belt 3 passes between the two limit rods 42; when the floating body 11 moves, the angle of the connecting belt 3 changes, which will drive the limit rod 42 on the corresponding side to move, so that the entire sliding frame 41 moves, realizing the conversion of the lateral displacement of the connecting belt 3, which is convenient for measurement.

[0045] Among them, see Figure 3 and 3 As shown, the width of the connecting belt 3 is respectively the same as the width of the through groove and the width between the two frames 411; the connecting belt 3 is limited in the width direction, so that the connecting belt 3 is not easy to deflect and affect the measurement accuracy; a dovetail groove 12 is provided on the floating body 11, and a dovetail block is provided at the bottom of the frame 411, and the dovetail block is slidably installed in the dovetail groove 12; by providing the dovetail groove 12, the frame 411 can be directly inserted from the side, which is convenient for installation and plays a role in limiting the vertical direction.

[0046] Among them, see Figure 2 As shown, a through groove is provided on the floating body 11, and by providing the through groove, the connecting belt 3 will not interfere with the movement of the floating body 11 when it is tilted; the sliding frame 41 includes two frames 411 symmetrically arranged along the through groove, and the two limit rods 42 are rotatably installed between the two frames 411. A positioning plate 412 is fixedly connected between the two frames 411, and the laser ranging module 5 is used to measure the position of the positioning plate 412; a rotatable limit rod 42 is provided between the two frames 411 to reduce the wear between the connecting belt 3 and the limit rod 42.

[0047] Among them, see Figure 2 As shown, the winding mechanism 2 includes a winding roller 21 and a coil spring, wherein the coil spring is installed at one end of the winding roller 21, and when the winding roller 21 is unwinding, the coil spring is compressed; by setting the coil spring and utilizing the elastic deformation of the coil spring, automatic winding and unwinding can be achieved at a low cost.

[0048] Among them, see Figure 3 As shown, the connecting belt 3 is provided with measuring holes 31 at even intervals, and the laser ranging module 5 includes a first laser ranging sensor 51 and a second laser ranging sensor 52. The first laser ranging sensor 51 is aligned with the measurement auxiliary positioning member 4 ( Figure 4 The second laser distance sensor 52 is aligned with the connecting belt 3 between the auxiliary positioning member 4 and the reel mechanism 2 ( Figure 4The arrow D2 is in the middle. When the connecting belt 3 is unwound, the measuring hole 31 passes through the measuring area of ​​the second laser ranging sensor 52. The principle of the laser ranging sensor is that the laser diode first emits a laser pulse at the target. After being reflected by the target, the laser is scattered in all directions. Part of the scattered light returns to the sensor receiver. The time from the emission of the light pulse to the return and reception is processed to determine the target distance. Whenever a measuring hole 31 passes through the second laser ranging sensor 52, its monitored value disappears. Therefore, the number of measuring holes 31 passing through the second laser ranging sensor 52 can be known, and the value increases during unwinding and decreases during winding. The distance between each measuring hole 31 is known, and the unwinding length of the connecting belt 3 can be obtained.

[0049] The use principle and method of this embodiment are as follows:

[0050] The device is placed on the water surface of the designated area. In the initial state, the counterweight is placed on the floating body 11 and put into the water. The counterweight sinks to the bottom of the water due to its weight and pulls the connecting belt 3, so that the winding roller 21 rotates to unwind. Since a winding spring is provided, the connecting belt 3 is always in a taut state. When the measuring holes 31 on the connecting belt 3 pass through the measuring area of ​​the second laser ranging sensor 52, the monitored value disappears. The number of measuring holes 31 passing through the second laser ranging sensor 52 can be known, so as to calculate the unwinding length of the connecting belt 3 and judge the initial water level.

[0051] During the monitoring process, due to the change of water level, the floating body 11 rises or falls, which will increase or decrease the extended length of the connecting belt 3. Since there is always a certain flow velocity in the river, the connecting belt 3 will have a certain inclination angle, and the upper end point of the measuring hole 31 is always close to the second laser distance sensor 52. Therefore, according to the values ​​of the two end points of the second laser distance sensor 52, it can be judged whether the connecting belt 3 is in the reeling or unreeling state;

[0052] When the flow rate changes, the faster the flow rate, the farther the positioning plate 412 is from the first laser distance sensor 51. The distance of the positioning plate 412 can be monitored by the first laser distance sensor 51. Since the distance between the first laser distance sensor 51 and the winding roller 21 remains unchanged, the first angle ( Figure 4 The size of A1) is calculated according to the unwinding length of the connecting belt 3, and the water level and water flow velocity are obtained;

[0053] The above structure can realize relatively accurate water level monitoring and flow rate monitoring in river areas, and eliminate the impact of fast flow rate on water level monitoring. It has low overall cost and easy installation. By realizing remote monitoring, it replaces traditional manual observation and can provide timely early warning for flood disasters.

[0054] Embodiment 2:

[0055] Based on the first embodiment, the present invention also provides an automatic water level monitoring device, wherein the floating body adopts a water robot that can sail along the water surface, and the water robot is powered by solar cells; by installing the device on the water robot, it can sail on the water surface according to remote commands and can be moved to various monitoring points, thereby increasing the monitoring area.

[0056] In this embodiment, the water robot includes a hull, a driving motor and twin propellers. The twin propellers are arranged on both sides of the hull and achieve turning through differential speed.

[0057] Among them, the reel mechanism 2 includes a driving motor and a roller, one end of the roller is fixedly connected to the output shaft of the driving motor, and the other end of the roller is provided with a torque sensor, and the driving motor drives the roller to reel in or out according to the value of the torque sensor; by setting the motor to drag the roller to rotate, reeling and unreeling are achieved, and the measurable water level change range is larger; and when installing and recovering the device, it is only necessary to move the device to the specified position, and the motor drags the connecting belt 3 to rotate, so that the counterweight block can be lowered or lifted, and the operation is more convenient.

[0058] Embodiment three:

[0059] See also Figure 5 On the basis of the first embodiment, the present invention further provides an automatic water level monitoring device, wherein the floating positioning assembly is replaced by a fixing frame 7 arranged above the water surface, the clock controllers are all installed on the fixing frame 7, a limiting cylinder 8 is vertically arranged on the fixing frame 7, the lower end of the limiting cylinder 8 extends into the water surface, the floating body 11 is located in the limiting cylinder 8, and the laser ranging module 5 is arranged at the top of the limiting cylinder 8; the floating body 11 is limited by the limiting cylinder 8, so that the floating body 11 is always aligned with the laser ranging module 5, thereby ensuring the accuracy of the measurement, and is suitable for a hydrological monitoring station.

[0060] It also includes a power module 6, which uses solar cells to supply power to the laser ranging module 5 and the clock controller.

[0061] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A water level automatic monitoring device, characterized in that: It includes a laser distance measurement module, a clock controller, a wireless transmission module and a floating positioning component. The floating positioning component aligns the floating body with the laser distance measurement module. The laser distance measurement module is used to monitor the distance data of the floating body. The clock controller starts the laser distance measurement module according to the clock frequency, transmits the monitored laser distance measurement module to the server, and the server monitors the water level according to the distance data. The floating positioning assembly includes a counterweight, a reel mechanism, a connecting belt and an auxiliary positioning piece. The reel mechanism and the auxiliary positioning piece are both installed on the floating body. The reel mechanism is used to reel in or unreel the connecting belt. The free end of the connecting belt is fixedly connected to the counterweight. When the connecting belt is tilted, it drives the auxiliary positioning piece to move laterally. The laser ranging module is used to measure the moving distance of the auxiliary positioning piece and the unwinding length of the connecting belt.

2. The automatic water level monitoring device according to claim 1, characterized in that: It also includes a user terminal, and the wireless transmission module transmits the distance data to the user terminal, and the user terminal includes a computer terminal and a mobile phone terminal.

3. The automatic water level monitoring device according to claim 1, characterized in that: It also includes a power supply module, which uses solar cells to supply power to the laser ranging module and the clock controller.

4. The automatic water level monitoring device according to claim 1, characterized in that: The auxiliary positioning member includes a sliding frame, which is slidably mounted on the floating body, and the sliding direction is parallel to the water flow direction. Two limit rods are arranged on the sliding frame, and the center lines of the limit rods are perpendicular to the sliding direction. The connecting belt passes between the two limit rods.

5. The automatic water level monitoring device according to claim 1, characterized in that: The reel mechanism comprises a winding roller and a coil spring, wherein the coil spring is mounted at one end of the winding roller, and when the winding roller is unwinding, the coil spring is compressed.

6. The automatic water level monitoring device according to claim 1, characterized in that: The reel mechanism includes a drive motor and a reel, one end of the reel is fixedly connected to the output shaft of the drive motor, and the other end of the reel is provided with a torque sensor. The drive motor drives the reel to reel in or unreel according to the value of the torque sensor.

7. The automatic water level monitoring device according to claim 1, characterized in that: The connecting belt is provided with measuring holes at even intervals, the laser ranging module comprises a first laser ranging sensor and a second laser ranging sensor, the first laser ranging sensor is aligned with the measurement auxiliary positioning piece, the second laser ranging sensor is aligned with the connecting belt between the auxiliary positioning piece and the reel mechanism, and when the connecting belt is unwound, the measuring holes pass through the measurement area of ​​the second laser ranging sensor.

8. The automatic water level monitoring device according to claim 4, characterized in that: The floating body is provided with a through slot, the sliding frame comprises two frames symmetrically arranged along the through slot, the two limit rods are rotatably installed between the two frames, a positioning plate is fixedly connected between the two frames, and the laser ranging module is used to measure the position of the positioning plate.

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