阅读说明：本技术 一种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 年夫喜 张兵 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,具体涉及一种智能防洪预警系统的水流冲击深度监测装置。包括控制器、固定柱和若干个冲击感测单元,所述固定柱竖直插设于桥墩旁的河床泥沙内,若干个所述冲击感测单元沿竖直方向均匀设置于所述固定柱上,所述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。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. The device comprises a controller, a fixed column and a plurality of impact sensing units, wherein the fixed column is vertically inserted into riverbed sediment beside a pier, the impact sensing units are uniformly arranged on the fixed column along the vertical direction, and the signal output ends of the impact sensing units are electrically connected with the signal input end of the controller. 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: including controller, fixed column (14) and a plurality of impact sensing unit (11), fixed column (14) are vertical to be inserted and are located in riverbed silt (40) by pier (20), a plurality of impact sensing unit (11) along vertical direction evenly set up in on fixed column (14), impact sensing unit (11) are including magnetism device (12) and be used for detecting magnetic field variation's magnetism sensing element (13), the signal output part of magnetism sensing element (13) and the signal input part electric connection of controller, magnetism sensing element (13) set firmly on fixed column (14), magnetism device (12) through elastic component (15) with fixed column (14) are connected, the vibration direction of magnetism device (12) is unanimous with the rivers direction.

2. The water flow impact depth monitoring device of the intelligent flood control early warning system according to claim 1, wherein: the magnetic device (12) is connected with the fixed column (14) through a reed.

3. The water flow impact depth monitoring device of the intelligent flood control early warning system according to claim 1, wherein: the magnetic device (12) and the magnetic sensing element (13) are arranged oppositely along the vertical direction, and the sensing surface of the magnetic sensing element (13) corresponds to the magnetic device (12) and is parallel to the water flow direction.

4. The water flow impact depth monitoring device of the intelligent flood control early warning system according to claim 1, wherein: the magnetic device (12) and the magnetic sensing element (13) are arranged oppositely along the horizontal direction, and the sensing surface of the magnetic sensing element (13) corresponds to the magnetic device (12) and is vertical to the water flow direction.

5. The intelligent flood control early warning system water flow impact depth monitoring device according to claim 2, wherein: the reed comprises a vertical part and a horizontal part, one end of the vertical part is fixedly connected with the magnetic device (12), and one end of the horizontal part is fixedly connected with the fixing column (14).

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, fixed column and a plurality of impact sensing unit, the fixed column is vertical insert locate the riverbed silt by the pier in, a plurality of impact sensing unit along vertical direction evenly set up in on the fixed column, impact sensing unit includes magnetic means and the magnetism sensing element that is used for detecting the magnetic field change, the signal output part of magnetism sensing element and the signal input part electric connection of controller, magnetism sensing element sets firmly on the fixed column, magnetic means pass through the elastic component with the fixed column is connected, the vibration direction of magnetic means is unanimous with the rivers direction.

Preferably, the magnetic device is connected with the fixing column through a reed.

Preferably, the magnetic device and the magnetic sensing element are arranged oppositely along a vertical direction, and a sensing surface of the magnetic sensing element corresponds to the magnetic device and is parallel to the water flow direction.

Preferably, the magnetic device and the magnetic sensing element are arranged oppositely along the horizontal direction, and the sensing surface of the magnetic sensing element corresponds to the magnetic device and is perpendicular to the water flow direction.

Preferably, the reed comprises a vertical part and a horizontal part, one end of the vertical part is fixedly connected with the magnetic device, and one end of the horizontal part is fixedly connected with the fixing column.

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. Adopt magnetic means and magnetism sensing element complex mode, can also realize the monitoring of rivers impact strength through magnetic field variation range, provide more comprehensive data support for the flood control early warning. The magnetic device and the magnetic sensing element are oppositely arranged in the vertical direction or the horizontal direction, and an appropriate scheme can be adopted according to high and low flow velocity areas of a river reach, so that the measurement of each flow velocity section is ensured to have higher sensitivity.

Drawings

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

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

FIG. 3 is a schematic structural diagram of a second 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, 132-sensing surface, 14-fixed column, 15-elastic element, 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, the water flow impact depth monitoring device 10 of the intelligent flood control early warning system in the present embodiment includes a controller, a fixed column 14 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, the magnetic device 12 is disposed at a predetermined distance from the 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 when the distance between the magnetic device 12 and the magnetic sensing element 13 is changed, the magnetic field sensed by the magnetic sensing element 13 is also changed. 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 11 No. 1 and No. 2 in fig. 1, the water flow may change the distance 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 fixed pillar 14 vertically inserted into the sediment, the impact sensing units 11 are fixedly disposed on the fixed pillar 14 at intervals along a length direction of the fixed pillar 14, the impact sensing units 11 have the same distance from each other, each impact sensing unit 11 has an elastic member 15, such as a reed, which is fixedly disposed on the fixed pillar 14, the magnetic device 12 in each impact sensing unit 11 is connected to the fixed pillar 14 through the elastic member 15, and the magnetic sensing element 13 is fixedly disposed on the fixed pillar 14.

Therefore, when the water flow impacts the impact sensing unit 11, the magnetic sensing element 13 remains still or only slightly displaces, and the magnetic device 12 vibrates or shifts position due to the impact of the water flow on the elastic member 15, so that the magnetic field sensed by the magnetic sensing element 13 or the output electric signal generates a specific waveform change, and therefore, by detecting the specific signal waveform, the position of the impact can be determined.

In addition, in another embodiment, each magnetic device 12 may be fixed on the fixed column 14, and each magnetic sensing element 13 is connected with the fixed column 14 through an elastic member.

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.

As shown in fig. 2, the vibration direction of the magnetic device 12 is substantially parallel to a sensing surface 132 of the magnetic sensing element 13, which is a surface of the magnetic sensing element 13 closest to the magnetic device 12, that is, the magnetic device 12 vibrates substantially along a direction parallel to the sensing surface 132 of the magnetic sensing element 13, and the magnetic sensing element 13 senses different magnetic flux densities at different distances.

In another embodiment, as shown in FIG. 3, the vibration direction of the magnetic device 12 is substantially perpendicular to the sensing surface 132 of the magnetic sensing element 13, that is, the magnetic device 12 vibrates substantially along the direction perpendicular to the sensing surface 132 of the magnetic sensing element 13, and the magnetic sensing element 13 senses different magnetic flux densities at different distances.

As shown in fig. 2 and 3, the magnetic sensing element 13 in fig. 2 is more sensitive to the moving distance of the magnetic device 12, the impact sensing unit 11 in fig. 2 is suitable for being arranged at a place with a low flow rate, relatively speaking, the magnetic sensing element 13 in fig. 3 is less sensitive to the moving distance of the magnetic device 12, and the impact sensing unit 11 in fig. 3 is suitable for being arranged at a place with a relatively high flow rate, so that one of the above two embodiments can be suitably selected for flow fields with different flow rates.

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.