阅读说明：本技术 智能防洪预警系统的水流冲击深度监测装置 (Water flow impact depth monitoring device of intelligent flood control early warning system ) 是由 李瑞清 姚晓敏 张兵 年夫喜 陈雷 于 2020-12-31 设计创作，主要内容包括：本发明涉及水文监测技术领域,具体涉及智能防洪预警系统的水流冲击深度监测装置。包括控制器、转接机构、旋板和若干个冲击感测单元,若干个冲击感测单元沿垂直于水面的方向埋置于泥沙中,每个冲击感测单元均包括一个磁装置和一个与磁装置相对设置的磁感测元件,冲击感测单元的信号输出端与控制器的信号输入端电性连接,每个磁装置均通过一个旋板与转接机构连接,磁装置固设于旋板一端,旋板另一端与转接机构转动连接,旋板的上端面设有弧状凸出部,旋板下端面为平面。采用埋置于泥沙中垂直线性排列的冲击感测单元,以检测磁场改变的方式,得知泥沙被水流冲击的位置进而得出冲击深度,其具有低成本、结构简单、容易大量布置的优势。(The invention relates to the technical field of hydrological monitoring, in particular to a water flow impact depth monitoring device of an intelligent flood control early warning system. Including the controller, switching mechanism, revolve board and a plurality of and strike sensing unit, a plurality of strikes sensing unit and buries in silt along the direction of perpendicular to surface of water, every strikes sensing unit and all includes a magnetism device and a magnetism sensing element that sets up relatively with the magnetism device, the signal output part of striking sensing unit and the signal input part electric connection of controller, every magnetism device all revolves the board through one and is connected with switching mechanism, the magnetism device sets firmly in revolving board one end, the board other end rotates with switching mechanism to be connected soon, the up end of revolving the board is equipped with the arcuation bulge, the terminal surface is the plane under the board soon. The impact sensing units embedded in the sediment and arranged vertically are adopted to detect the change of the magnetic field, so that the impact depth of the sediment at the position impacted by the water flow is obtained, and the device has the advantages of low cost, simple structure and easiness in mass arrangement.)

1. The utility model provides an intelligence flood control early warning system's rivers impact depth monitoring devices which characterized in that: comprises a controller, a switching mechanism (163), a rotating plate (16) and a plurality of impact sensing units (11), wherein the impact sensing units are embedded in silt (40) along the direction vertical to the water surface (30), each of the impact sensing units (11) comprises a magnetic device (12) and a magnetic sensing element (13) arranged opposite to the magnetic device (12), the signal output end of the impact sensing unit (11) is electrically connected with the signal input end of the controller, each magnetic device (12) is connected with the switching mechanism (163) through a rotating plate (16), the magnetic device (12) is fixedly arranged at one end of the rotating plate (16), the other end of the rotating plate (16) is rotatably connected with the switching mechanism (163), the upper end face of the rotary plate (16) is provided with an arc-shaped protruding part, and the lower end face (165) of the rotary plate (16) is a plane.

2. The water flow impact depth monitoring device of the intelligent flood control early warning system according to claim 1, wherein: the switching mechanism (163) comprises vertical rods (167) arranged on two sides of the rotating plate (16) and a rotating shaft (168) rotatably connected with the end part of the rotating plate (16), and the vertical rods (167) are vertically inserted into the river bottom sediment (40).

3. The water flow impact depth monitoring device of the intelligent flood control early warning system according to claim 1, wherein: the spiral plate (16) comprises a plane section and a convex section (164) connected with the plane section (166), the end of the plane section (166) is connected with the switching mechanism (163), and the end of the convex section (164) is connected with the magnetic device (12).

4. The intelligent flood control early warning system water flow impact depth monitoring device according to claim 3, wherein: convex surface section (164) includes steep slope face (a) and gentle domatic (b), steep slope face (a) is met to the rivers direction setting, steep slope face (a) and gentle domatic (b) rounding off are connected, steep slope face (a) and gentle domatic (b) junction are convex surface section (164) most salient point.

5. The water flow impact depth monitoring device of the intelligent flood control early warning system according to claim 1, wherein: the river bottom sediment magnetic sensor is characterized by further comprising fixing columns (14), wherein the fixing columns (14) are vertically inserted into river bottom sediment (40), and the magnetic sensing elements (13) are uniformly fixed on the fixing columns (14) in the vertical direction.

6. The water flow impact depth monitoring device of the intelligent flood control early warning system according to claim 1, wherein: the sensing surface of the magnetic sensing element (13) is arranged towards the magnetic device (12).

7. The water flow impact depth monitoring device of the intelligent flood control early warning system according to claim 1, wherein: when the rotary plate (16) is horizontal, the magnetic device (12) corresponds to the upper part or the lower part of the sensing surface of the magnetic sensing element (13).

Technical Field

The invention relates to the technical field of hydrological monitoring, in particular to a water flow impact depth monitoring device of an intelligent flood control early warning system.

Background

The safety and stability of the bridge pier structure system of the highway bridge crossing the river depend on the severity of the bridge pier foundation being washed away by the river for a long time, namely the depth of attack. In river flood control early warning, the depth of attack is used as an important flood control early warning judgment index, and the important flood control early warning judgment index is the same.

The depth of the scouring is determined by factors such as the flow rate, the flow velocity, the quantity of sand and stone carried, the soil quality and composition of a river bed, the cross-sectional area of water flow passing and the like of the river, and the factors have obvious influence in the water-rich period of the river, so that a local scouring calculation formula is not reliable, and accurate water flow impact depth data cannot be obtained through calculation at present. When a flood peak comes, a large amount of flood carries gravels to generate continuous impact on the pier foundation, eddy currents are generated near the side wall of the bridge foundation and soil layers on the periphery of the bridge foundation are hollowed out continuously, and under the action of continuous and repeated flood, a river bed at the bottom of the pier foundation generates serious local scouring, so that the stability and the safety of the viaduct foundation are influenced.

Therefore, the accurate impact depth has great significance for bridge safety and flood control, and how to effectively acquire the impact depth data becomes an urgent problem to be solved.

Disclosure of Invention

The invention aims to provide a water flow impact depth monitoring device of an intelligent flood control early warning system aiming at the defects of the prior art, and the water flow impact depth monitoring device can measure the water flow impact depth in real time.

The technical scheme of the invention is as follows: including controller, changeover mechanism, revolve board and a plurality of and strike sensing unit, a plurality of strike sensing unit along the direction of the perpendicular to surface of water in the direction embedding in silt, every strike sensing unit and all include a magnetism device and one with the relative magnetism sensing element that sets up of magnetism device, strike sensing unit's signal output part and the signal input part electric connection of controller, every the magnetism device all is connected with changeover mechanism through a revolving board, the magnetism device sets firmly in revolving board one end, the revolving board other end with changeover mechanism rotates and connects, the up end of revolving board is equipped with the arcuation bulge, the terminal surface is the plane under the revolving board.

Preferably, the switching mechanism comprises vertical rods arranged on two sides of the rotating plate and a rotating shaft rotatably connected with the end part of the rotating plate, and the vertical rods are vertically inserted into the sediment in the river bottom.

Preferably, the rotary plate comprises a plane section and a convex section connected with the plane section, the end part of the plane section is connected with the switching mechanism, and the end part of the convex section is connected with the magnetic device.

Comparatively preferred, the convex surface section includes steep slope surface and gentle domatic, steep slope surface is to the setting of rivers direction, steep slope surface and the smooth and smooth transitional coupling of gentle slope surface, steep slope surface and the gentle domatic junction are convex surface section most salient point.

Preferably, the river sediment detection device further comprises fixing columns, the fixing columns are vertically inserted into the river sediment, and the magnetic sensing elements are uniformly fixed on the fixing columns along the vertical direction.

Preferably, the sensing surface of the magnetic sensing element is disposed facing the magnetic device.

Preferably, when the rotary plate is horizontal, the magnetic device corresponds to the upper part or the lower part of the sensing surface of the magnetic sensing element.

The invention has the beneficial effects that: the impact sensing unit that vertical linearity was arranged in silt is embedded to the adoption to the mode that detects the magnetic field and change learns the position that silt was strikeed by rivers and then reachs the depth of impact, and it has the advantage that low cost, simple structure, easy a large amount of arranging, and can detect the condition that silt converges, forms real-time control, provides flood control information, and guarantees the stability of pier structure. Through the fixed magnetic means of board rotation type soon to swing through the convex surface design realization board soon, through the swing frequency change of board soon, effectively realize the velocity of flow monitoring, the rotation angle through board soon realizes that magnetic field size changes, thereby realizes rivers intensity monitoring, provides more comprehensive data support for the flood control early warning.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of an arrangement of impact sensing units according to the present invention.

In the figure: 10-water flow impact depth monitoring device, 11-impact sensing unit, 12-magnetic device, 13-magnetic sensing element, 14-fixed column, 16-rotating plate, 161, 162-end edge, 163-switching mechanism, 164-convex section, 165-lower end face, 166-plane section, 167-vertical rod, 168-rotating shaft, 20-pier, 30-water surface and 40-silt

Detailed Description

The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.

As shown in fig. 1, a water flow impact depth monitoring device 10 of an intelligent flood control early warning system according to the present invention includes a controller and a plurality of impact sensing units 11. Each impact sensing unit 11 includes one or more magnetic devices 12 and one or more magnetic sensing elements 13, the magnetic device 12 may be implemented as a permanent magnet or an electromagnet, the magnetic sensing element 13 may be implemented as a hall effect sensor, and when the impact depth sensing device 10 is disposed, the impact sensing units 11 are embedded in the silt 40 in a direction perpendicular to the water surface 30, such that the impact sensing units 11 are linearly arranged in a vertical direction and are spaced apart from each other.

In each impact sensing unit 11, a magnetic device 12 is disposed at a predetermined distance from a magnetic sensing element 13, the magnetic device 12 is used for generating a magnetic field, the magnetic sensing element 13 can sense the magnetic field generated by the magnetic device 12, and the sensing face of the magnetic sensing element 13 is disposed facing the water flow direction. When the distance between the magnetic device 12 and the magnetic sensing element 13 changes, the magnetic field sensed by the magnetic sensing element 13 changes. Assuming that the three impact sensing units 11 shown in fig. 1 are numbered as No. 1, No. 2 and No. 3 from top to bottom, when the silt at the position of the impact sensing unit 11 is washed away by the water flow, as in the impact sensing units 1 and No. 2 in fig. 1, the water flow may change the distance or position between the magnetic device 12 and the magnetic sensing element 13, and the magnetic sensing element 13 senses the magnetic field change and outputs a signal waveform corresponding to the magnetic field change.

Since the silt at the position of the impact sensing units 1 and 2 is washed away by the water flow, the magnetic sensing element 13 of the impact sensing unit 1 and 2 outputs a signal waveform corresponding to the change of the magnetic field, and the magnetic sensing element 13 of the impact sensing unit 3 is still buried in the soil, so the amplitude of the output signal remains unchanged or only slightly changes, and in addition, the silt near the impact sensing unit 1 11 is impacted first, so the magnetic sensing element 13 of the impact sensing unit 1 11 senses the change of the magnetic field before the magnetic sensing element 13 of the impact sensing unit 2 senses the change of the magnetic field.

Therefore, based on the electrical signal output from each magnetic sensing element 13, the position where the impact occurs and the depth of the impact, and whether there is silt back, for example, the electrical signal output from each magnetic sensing element 13 can be detected, and when the electrical signal output from a certain magnetic sensing element 13 is detected to have a specific waveform (such as strong vibration and position deviation), the position of the magnetic sensing element 13 is determined to have been impacted.

The impact depth sensing device 10 of the present invention further includes a switching mechanism 163 and a fixing column 14, which are vertically inserted into the sediment. The magnetic sensing elements 13 are fixedly disposed on the fixed posts 14 at intervals along the length direction of the fixed posts 14, and the magnetic sensing elements 13 have the same distance from each other.

As shown in fig. 2, the switching mechanism 163 includes a vertical rod 167 and a rotating shaft 168. The two vertical rods 167 are inserted into the sediment 40 in the vertical direction, and one end of the rotating plate 16 is rotatably connected with the vertical rods 167 through the rotating shaft 168. The magnetic device 12 is fixed to one end 161 of the rotating plate 16, and the other end 162 of the rotating plate 16 faces the switching mechanism 163. When the spin plate 16 is horizontal, the magnetic device 12 corresponds to a lower portion of the sensing surface of the magnetic sensing element 13.

The upper end face of the rotating plate 16 is provided with an arc-shaped protrusion, and the arc-shaped protrusion may be the shape of the whole upper end face, or may be only a part, and when it is only a part, the manner of this embodiment may be adopted, such as: the rotor plate 16 includes a planar section and a convex section 164 connected to a planar section 166, the planar section 166 terminating in a transition mechanism 163, and the convex section 164 terminating in the magnetic assembly 12. The convex surface section 164 comprises a steep slope surface a and a gentle slope surface b, the steep slope surface a is arranged facing the water flow direction, the steep slope surface a is in smooth transition connection with the gentle slope surface b, the joint of the steep slope surface a and the gentle slope surface b is the most convex point of the convex surface section 164, and the lower end surface 165 of the rotary plate 16 is a plane.

The rotating plate 16 is arranged along the water flow direction, and according to hydrodynamics, when the water flow is in a high flow speed state, the rotating plate 16 is driven to make the magnetic device 12 be in a high position, and when the water flow is in a low flow speed state, the magnetic device 12 is in a low position, because the flow speed of the water changes along with time, the magnetic device 12 can move back and forth along the direction of an arrow Z in fig. 2, when the magnetic device 12 is in the high position, the magnetic sensing element 13 senses a relatively high magnetic field, and when the magnetic device 12 is in the low position, the magnetic sensing element 13 senses a relatively low magnetic field, as shown in fig. 2, when silt is impacted by the water flow and water flows away from the rotating plate 16, the magnetic sensing element 13 can sense the change of the magnetic field, so as to judge the impact strength of the water flow.

Basically, in each impact sensing unit 11, the magnetic device 12 and the magnetic sensing element 13 only need to be capable of generating relative operation, and the above embodiment represents water flow impact by generating specific displacement of the magnetic device 12, however, the embodiment in which the magnetic sensing element 13 moves or both move can also be used for representing water flow impact, the fixed arrangement of the magnetic sensing element 13 can reduce the wiring cost, and the relative operation between the two is not affected by the external environment, and besides the motion of vibration, the relative operation can also be realized by other types of motion.

The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.