CN114858129B - Underwater topography change monitoring device and monitoring method thereof - Google Patents
Underwater topography change monitoring device and monitoring method thereof Download PDFInfo
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- CN114858129B CN114858129B CN202210460839.8A CN202210460839A CN114858129B CN 114858129 B CN114858129 B CN 114858129B CN 202210460839 A CN202210460839 A CN 202210460839A CN 114858129 B CN114858129 B CN 114858129B
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- 238000012876 topography Methods 0.000 title claims abstract description 72
- 238000012806 monitoring device Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 238000009825 accumulation Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 238000009991 scouring Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000013480 data collection Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000003550 marker Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses an underwater topography change monitoring device and a monitoring method thereof, which relate to the technical field of topography distribution and change monitoring, wherein the underwater topography change monitoring device comprises: the platform base is symmetrically provided with two anchor weights connected with each other below the platform base; a measuring instrument; the winch is provided with a steel wire rope; the winch metering instrument is arranged corresponding to the winch; a water level sensor; an inclination sensor; a control system; the control system can control the winch to tighten and loosen the steel wire rope according to signal feedback of the inclination sensor and the water level sensor, so that the steel wire rope is mutually perpendicular to the platform base under the action of the anchor weight, the platform base is positioned right above the anchor weight, and the waterline position on the side face of the platform base is unchanged. The monitoring device of the application not only effectively reduces the influence of external environment and improves the accuracy and stability of data acquisition, but also can realize fixed-point long-term observation.
Description
Technical Field
The invention relates to the technical field of terrain distribution and change monitoring, in particular to an underwater terrain change monitoring device and an underwater terrain change monitoring method.
Background
In recent years, most river channels, ports and seaports are subjected to different degrees of silting or flushing with the influence of factors such as human activities, environment and geology. The reason for the accumulation is mainly that the water receiving amount is reduced, the tidal power is weakened, and the exogenous sediment accumulation is caused, and the accumulation often causes the river side beaches to gradually become high and expand to the main groove, and part of the beach lands are high and expose out of the water surface, and the cross section area of the water is narrowed, so that not only is the urban landscape and the ecological environment influenced, but also the river flood and navigation are seriously influenced. Meanwhile, the existence of the flushing silts can cause the problems of erosion of the dike feet, breakage of the dike, breach and the like, and economic loss is brought to the periphery. It follows that monitoring of the above-mentioned terrain variations is of paramount importance.
At present, the traditional underwater topography monitoring technology mainly comprises a single beam sounding system, a multi-beam sounding system, a marker pile method, a SET (deposition-erosion level measurement) method, an ALT US (composed of main equipment such as a sensor, a data memory, a pressure sensor, a power supply and the like) and the like. However, in practical application, the multi-beam and single-beam sounding systems belong to data measurement technologies in dynamic environments, and the sounding systems are affected by wind and waves along with a measuring ship at required moments, so that rolling, pitching and vertical fluctuation occur, and the whole operation process is a random dynamic process; and the vessel is slightly different basically every navigation route due to the influence of the water flow, so that the accuracy of the data result of the sounding system is affected. Meanwhile, the multi-beam and single-beam sounding system can only collect data according to time intervals such as 4 months or before and after flood season, the data is accurately ensured to be influenced by various factors, and a long-term river bottom change condition cannot be recorded. The marker pile method, the SET method and the ALT US method all need pile driving and erecting instruments, are easy to influence the past ships, and can only collect data at the near shore and at the deep water depth, so that the collected data is not integrally representative. Therefore, the conventional underwater topography monitoring technology is easily influenced by external environmental factors (wind and rough roll, pitch and vertical heave and sailing route), so that the accuracy of the monitoring data is poor, and long-term monitoring data of the fixed-point topography change is difficult to acquire due to different measuring position deviations of the sailing route.
Disclosure of Invention
Aiming at the technical problems that the accuracy of monitoring data is poor due to the fact that the traditional underwater topography monitoring technology is easily influenced by external environment factors, the invention provides the underwater topography change monitoring device and the monitoring method thereof, which can effectively avoid the influence of the external environment factors, improve the accuracy of the monitoring data and realize the long-term monitoring of the fixed-point topography change.
In order to solve the problems, the technical scheme provided by the invention is as follows:
an underwater topography change monitoring device comprising:
the platform base is symmetrically provided with two anchor weights connected with each other below the platform base;
the measuring instrument is arranged on the platform base and is used for measuring the vertical depth;
the winch is arranged on the platform base, the winch is arranged corresponding to the anchor weight, a steel wire rope is arranged on the winch, and the winch is connected with the anchor weight through the steel wire rope;
the winch metering instrument is arranged corresponding to the winch and is used for recording the rotating distance of the corresponding steel wire rope under the action of the winch;
the water level sensor is arranged on the platform base;
the inclination sensor is used for detecting inclination change of the platform base relative to the horizontal plane;
the control system is respectively connected with the measuring instrument, the winch, the water level sensor and the inclination sensor;
the control system can control the winch to tighten and loosen the steel wire rope according to signal feedback of the inclination sensor and the water level sensor, so that the steel wire rope is mutually perpendicular to the platform base under the action of the anchor weight, the platform base is positioned right above the anchor weight, and the waterline position on the side face of the platform base is unchanged.
In this application, utilize the ship to take underwater topography change monitoring devices to predetermine the place, select suitable position to throw to establish two interconnect's anchor system heavy object, make the platform base place in predetermineeing the place, after the platform base is stable, at this moment, wire rope is in the relaxation state, and whole device is fluctuated along with rivers. Starting a control system, when the inclination sensor detects that the platform base is in a shaking inclination state, the inclination sensor triggers a signal and feeds the signal back to the control system, at the moment, the control system analyzes the inclination direction and the angle of the inclination sensor according to the signal and controls the winch to perform forward driving, the corresponding steel wire rope is rolled, namely the steel wire rope is tightened, so that the steel wire rope connected with the anchor weight is perpendicular to the platform base, the platform base is stressed to move to be right above the anchor weight, and meanwhile, a winch metering instrument records the rotation distance of the steel wire rope; the stress of the platform base is right above the anchor-series heavy object, the stress influences the whole platform base to deepen downwards, namely the distance between the platform base and the water surface changes, at the moment, a water level sensor triggers a signal and feeds the signal back to the control system, the control system controls the winch to reversely drive and loosen the steel wire rope according to the signal, at the moment, the stress is reduced or eliminated, so that the platform base rises to draft and returns to an initial position, and at the same time, a winch metering instrument records the rotation distance of the steel wire rope and controls a measuring instrument to measure the depth in the water; with this circulation, make the platform base can be directly over the anchor system heavy object and draft be unchangeable all the time, constitute a dynamic balance system for measuring instrument and other instruments are in perpendicular steady state all the time when gathering data, and gather required long-time perpendicular degree of depth data, then combine the rotation distance of wire rope that winch measuring instrument recorded, calculate the water bottom surface elevation value of this moment, and compare with all moment data, can obtain the change condition of topography under water in the continuous time t. Therefore, compared with the traditional underwater topography monitoring technology, the underwater topography change monitoring device in the application forms a dynamic balance system, so that a measuring instrument and other instruments are always in a vertical stable state when data are collected, the influence of external environments (such as wind, waves and tidal bore) is effectively reduced or reduced, the data difference caused by different ship driving routes is eliminated, the accuracy and stability of data collection are improved, fixed-point long-term observation can be realized, and the change process of underwater topography of a time period can be completely recorded.
Optionally, a waterproof device is arranged on the platform base, and the control system is located in the waterproof device.
Optionally, the device further comprises a power supply device, and the power supply device is arranged on the platform base.
Optionally, two anchor weights are respectively located at two ends of the platform base.
Optionally, through holes are formed at two ends of the platform base.
Optionally, the water level sensor is located in the through hole.
Optionally, the platform base is of a ship-shaped structure.
Optionally, the measuring instrument is located at a middle position of the platform base.
Optionally, the platform further comprises a warning lamp and a measuring flag, wherein the warning lamp and the measuring flag are both positioned on the platform base.
Meanwhile, the application also provides an underwater topography change monitoring method, which is implemented by adopting the underwater topography change monitoring device and comprises the following steps:
1) Casting an anchor weight, and placing a platform base at a preset place;
2) According to signals of the inclination sensor and the water level sensor, the control system controls the winch to retract and release the steel wire rope, so that the steel wire rope is mutually perpendicular to the platform base under the action of the anchor weight, the platform base is positioned right above the anchor weight, and the waterline position on the side face of the platform base is unchanged;
3) And acquiring the rotation distance of the steel wire rope recorded by the winch metering instrument and the vertical depth data of the measuring instrument, and acquiring the continuous water bottom surface elevation value in the continuous time t by the control system according to the data, and comparing to obtain the change condition of the underwater topography in the continuous time t.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) According to the underwater topography change monitoring device, two anchor weights connected with each other are thrown at the proper positions, so that the platform base is placed at a preset place, and after the platform base is stable, the steel wire rope is in a loose state, and the whole device floats along with water flow. Starting a control system, when the inclination sensor detects that the platform base is in a shaking inclination state, the inclination sensor triggers a signal and feeds the signal back to the control system, at the moment, the control system analyzes the inclination direction and the angle of the inclination sensor according to the signal and controls the winch to perform forward driving, namely, the wire rope is tightened, so that the wire rope is mutually perpendicular to the platform base under the action of the anchor weight, the platform base is stressed to move to be right above the anchor weight, and meanwhile, a winch metering instrument records the rotation distance of the wire rope; the stress of the platform base is right above the anchor-series heavy object, the stress influences the whole platform base to deepen downwards, namely the distance between the platform base and the water surface changes, at the moment, a water level sensor triggers a signal and feeds the signal back to the control system, the control system controls the winch to reversely drive and loosen the steel wire rope according to the signal, at the moment, the stress is reduced or eliminated, so that the platform base rises to draft and returns to an initial position, and at the same time, a winch metering instrument records the rotation distance of the steel wire rope and controls a measuring instrument to measure the depth in the water; with this circulation, make the platform base can be all the time with the wire rope mutually perpendicular of its below, be in anchor series heavy object directly over and draft unchanged, constitute a dynamic balance system, make measuring instrument and other instruments be in perpendicular steady state all the time when gathering data, and gather required long-time perpendicular degree of depth data, then combine the rotation distance of wire rope that the winch measuring instrument recorded, calculate the water bottom surface elevation value of corresponding moment, and compare with all moment data, can obtain the change condition of topography under water of this time quantum. Therefore, compared with the traditional underwater topography monitoring technology, the underwater topography change monitoring device in the application forms a dynamic balance system, so that a measuring instrument and other instruments are always in a vertical stable state when data are collected, the influence of external environments (such as wind, waves and tidal bore) is effectively reduced or reduced, the data difference caused by different ship driving routes is eliminated, the accuracy and stability of data collection are improved, fixed-point long-term observation can be realized, and the change process of underwater topography of a time period can be completely recorded.
(2) According to the underwater topography change monitoring device, the platform base is of a ship-shaped structure, impact of rising and falling tide water flow can be reduced, stability of the platform base is improved, and accordingly shaking of instruments on the platform is reduced.
(3) According to the underwater topography change monitoring device, the warning lamp and the measuring flag are arranged, so that a passing ship can be reminded, and the whole monitoring device is protected.
(4) According to the underwater topography change monitoring device, the two anchor weights are respectively located at the two ends of the platform base, so that stability of the platform base can be guaranteed.
(5) According to the underwater topography change monitoring device, the measuring instrument is arranged at the middle position of the platform base, so that the measuring instrument can measure vertical depth data more stably, and the quality of the data is improved.
(6) According to the underwater topography change monitoring method, the influence of external environments (such as wind, waves and tidal bore) can be effectively reduced or reduced, the data difference caused by different ship driving routes is eliminated, the accuracy and stability of data acquisition are improved, fixed-point long-term observation can be achieved, and the change process of underwater topography in a time period can be completely recorded.
Drawings
Fig. 1 is a side view of an underwater topography change monitoring device according to an embodiment of the present invention.
Fig. 2 is a top view of an underwater topography change monitoring device according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a use process of an underwater topography change monitoring device according to an embodiment of the present invention.
Fig. 4 is a side view of an underwater topography change monitoring device according to an embodiment of the present invention.
Description of the embodiments
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings. The first, second, etc. words are provided for convenience in describing the technical scheme of the present invention, and have no specific limitation, and are all generic terms, and do not constitute limitation to the technical scheme of the present invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
With reference to fig. 1-4, this embodiment provides an underwater topography change monitoring device, including: the platform comprises a platform base 1, wherein two anchor weights 2 which are connected with each other are symmetrically arranged below the platform base 1; a measuring instrument 3, wherein the measuring instrument 3 is arranged on the platform base 1, and the measuring instrument 3 is used for measuring vertical depth; the winch 4 is arranged on the platform base 1, the winch 4 is arranged corresponding to the anchor weight 2, a steel wire rope 5 is arranged on the winch 4, and the winch 4 is connected with the anchor weight 2 through the steel wire rope 5; the winch metering instrument 6 is arranged corresponding to the winch 4, and the winch metering instrument 6 is used for recording the rotation distance of the corresponding steel wire rope 5 under the action of the winch 4; the water level sensor 7 is arranged on the platform base 7; the inclination sensor 8 is used for detecting the inclination change of the platform base 1 relative to the horizontal plane; the control system is respectively connected with the measuring instrument 3, the winch 4, the water level sensor 7 and the inclination sensor 8;
the control system can control the winch 4 to tighten and loosen the steel wire rope 5 according to signal feedback of the inclination sensor 8 and the water level sensor 7, so that the steel wire rope 5 is mutually perpendicular to the platform base 1 under the action of the anchor weight 2, the platform base 1 is positioned right above the anchor weight 2, and the water line position on the side face of the platform base 1 is unchanged.
In the application, the underwater topography change monitoring device is brought to a preset place by a ship, two anchor weights 2 connected with each other are thrown at a proper position, the platform base 1 is placed at the preset place, and after the platform base 1 is stabilized, as shown in fig. 3, at the moment, the steel wire rope 5 is in a loose state, and the whole device flows along with water flow. Starting a control system, when the inclination sensor 8 detects that the platform base 1 is in a shaking inclination state, the inclination sensor 8 triggers a signal and feeds the signal back to the control system, at the moment, the control system analyzes the inclination direction and the angle of the signal according to the signal and controls the winch 4 to perform forward driving, the corresponding steel wire rope 5 is rolled, namely the steel wire rope 5 is tightened, so that the steel wire rope 5 is mutually perpendicular to the platform base 1 under the action of the anchor weight 2, the platform base 1 is stressed to move to be right above the anchor weight 2, and meanwhile, the winch metering instrument 6 records the rotation distance of the steel wire rope 5; because the stress of the platform base 1 is right above the anchor weight 2, the stress influences the whole platform base 1 to deepen downwards, namely the distance between the platform base 1 and the water surface changes, at the moment, the water level sensor 7 triggers a signal and feeds back the signal to the control system, the control system controls the winch 4 to reversely drive and loosen the steel wire rope 5 according to the signal, at the moment, the stress is reduced or eliminated, so that the platform base 1 is lifted upwards to restore to the initial position, and at the same time, the winch metering instrument 6 records the rotation distance of the steel wire rope 5 and controls the measuring instrument 3 to measure the vertical depth in the water; with this circulation, make platform base 1 can be all the time with its below wire rope 5 mutually perpendicular, be in anchor system heavy object 2 directly over and draft unchanged, constitute a dynamic balance system, make measuring instrument 3 and other instruments be in perpendicular steady state all the time when gathering data, and gather required long-time perpendicular degree of depth data, then combine the rotation distance of wire rope 5 that winch measuring instrument 6 was noted, calculate and obtain this moment water bottom surface elevation value, and with all moment data comparison, can obtain the change condition of topography under water of this time quantum. Therefore, compared with the traditional underwater topography monitoring technology, the underwater topography change monitoring device in the application forms a dynamic balance system, so that the measuring instrument 3 and other instruments are always in a vertical stable state when collecting data, the influence of external environments (such as wind, waves and tidal surge) is effectively reduced or reduced, the data difference caused by different ship driving routes is eliminated, the accuracy and stability of data collection are improved, fixed-point long-term observation can be realized, and the change process of underwater topography of a time period can be completely recorded.
In practical application, the control system comprises a first control system and a second control system, wherein the first control system is respectively connected with the winch 4, the water level sensor 7 and the inclination sensor 8, and the second control system is connected with the measuring instrument 3.
In practical application, the measuring instrument 3 can be replaced according to the requirement, for example, the device throwing time is long and only single-point data is needed, and the measuring instrument 3 can select a altimeter, a single-frequency depth finder and the like; if the regional topography transformation needs to be monitored, the measuring instrument 3 can be provided with a multi-beam depth sounder, a side-scan sonar and the like.
In practical use, the tilt sensor 6 is located at the center of the platform base 1, and this arrangement can improve the sensitivity and accuracy of the tilt sensor.
Example 2
With reference to fig. 1-2, in the underwater topography change monitoring device of this embodiment, compared with the technical solution of embodiment 1, a waterproof device 9 is disposed on the platform base 1, and the control system is located in the waterproof device 9, and the arrangement is used for protecting the control system.
Example 3
Referring to fig. 1-2, compared with the technical solution of embodiment 1, the underwater topography change monitoring device of the present embodiment further includes a power supply device 10, where the power supply device 10 is disposed on the platform base 1. In practical application, the power supply device is a solar panel or a battery.
Example 4
With reference to fig. 1-2, in the underwater topography change monitoring device of this embodiment, compared with the technical solution of embodiment 1, two anchor weights 2 are respectively located at two ends of the platform base 1. The two anchor weights 2 are connected through the anchor rope 13, and the arrangement can ensure the stability of the platform base 1.
Example 5
Referring to fig. 2, in the underwater topography change monitoring device of this embodiment, compared with the technical solution of embodiment 4, through holes 13 are provided at two ends of the platform base 1. The through hole 13 is used for the passing of the steel wire rope 5, one end of the steel wire rope 5 is fixed with the anchor weight 2, the other end of the steel wire rope 5 passes through the winch metering instrument 6 and is fixed on the winch 4, and the arrangement can realize stable connection among the anchor weight 2, the winch metering instrument 6 and the winch 4.
Example 6
Referring to fig. 2, in the underwater topography change monitoring device of this embodiment, compared with the technical solution of embodiment 5, the water level sensor is located in the through hole 13.
Example 7
Compared with the technical scheme of the embodiment 1, the underwater topography change monitoring device of the embodiment is characterized in that the platform base 1 is of a ship-shaped structure, the impact of rising and falling tide water flow can be reduced, the stability of the platform base is improved, and accordingly shaking of instruments on the platform is reduced.
In practical application, the part of the platform base 1 close to the water surface is made of foam materials, and the part of the platform base 1 far from the water surface is made of steel materials. This setting can guarantee that platform base 1 floats on the surface of water, guarantees the structural strength of platform base 1 simultaneously, improves its life.
Example 8
Compared with the technical scheme of the embodiment 1, the underwater topography change monitoring device of the embodiment is characterized in that the measuring instrument 3 is positioned in the middle of the platform base 1 and penetrates through the platform base 1. This arrangement allows the measuring instrument 3 to measure vertical depth data more smoothly, improving the quality of the data.
Example 9
Referring to fig. 1-2, compared with the technical scheme of embodiment 1, the underwater topography change monitoring device of the present embodiment further includes a warning lamp 11 and a measuring flag 12, where the warning lamp 11 and the measuring flag 12 are both located on the platform base 1. Generally, in Jiang Dao, the occurrence of large mist on the sea is sometimes caused, the visibility is low, and the warning lamp 11 and the measuring flag 12 are arranged, so that the warning lamp 11 can be provided with a solar panel to flash at intervals, remind the passing ship, and further protect the whole monitoring device.
Example 10
The underwater topography change monitoring method of the present embodiment is implemented by using the underwater topography change monitoring device according to any one of the embodiments 1 to 9, and includes the following steps:
1) Casting an anchor weight, and placing a platform base at a preset place;
2) According to signals of the inclination sensor and the water level sensor, the control system controls the winch to retract and release the steel wire rope, so that the steel wire rope is mutually perpendicular to the platform base under the action of the anchor weight, the platform base is positioned right above the anchor weight, and the waterline position on the side face of the platform base is unchanged;
3) And acquiring the rotation distance of the steel wire rope recorded by the winch metering instrument and the vertical depth data of the measuring instrument, and acquiring the continuous water bottom surface elevation value in the continuous time t by the control system according to the data, and comparing to obtain the change condition of the underwater topography in the continuous time t.
The monitoring method implemented by the monitoring device can effectively reduce or reduce the influence of external environments (such as wind, waves and tidal bore) and eliminate data differences caused by different ship driving routes, improves the accuracy and stability of data acquisition, can realize fixed-point long-term observation, and can completely record the change process of underwater topography in a time period.
In practical use, in step 1), the anchor weights are arranged parallel to the direction of the fluctuating tide along the water flow direction. The setting can make the platform base be on a parallel with the rivers direction, reduces the impact of rising and falling tide rivers, improves the stability of platform base.
In practical application, adopt this application topography change monitoring devices under water to obtain data and carry out siltation calculation, specifically as follows:
firstly, removing the condition of siltation or flushing, and making the platform base up and down along with the fluctuation of tide, the control system controls the windlass to make the platform base only up and down move by means of steel wire rope, and using tide expansion as example, as shown in figure 4, the rotation distance of steel wire ropes at two ends is respectively recorded as J 1 、J 2 The method comprises the steps of carrying out a first treatment on the surface of the At this time, the paying-out length of the wire rope is J i ，J i Is (J) 1 +J 2 )/2 ，J i The value of the steel wire rope is defined as a negative value, and the reading value h of the tidal water expansion measuring instrument is the value of the steel wire rope i Large relative strain, J i And h i The 2 values should be equal and opposite in sign, so H 1 =h i +j i And each time later is true. If the water falls into water, ji is the income value of the steel wire rope, the value is defined as a positive value, and at the moment, the reading value h of the measuring instrument i The correspondence is small.
When the continuous measurement value in the continuous time t is required to be measured, the reading value H of the measuring instrument at the starting time 1 (namely the distance from the measuring instrument to the bottom in water) is recorded 1 Winch metering instrument records the moving (rotating) distance J of the steel wire i =(J 1 +J 2 ) 2, wherein i represents any time other than 1, such as 2.3.4. At the same time, if X i Indicating the amount X of fouling or scouring of the bottom of the underwater topography i ，h i For the degree of the measuring instrument at the subsequent moment i, the winch measuring instrument records the moving distance of the steel wire to be J i The value of this moment with respect to the initial stabilization moment 1 is H 1 =h i +j i ；
If no sedimentation or flushing occurs at the bottom of the underwater topography, H 1 =h i +j i If the accumulation or the flushing occurs, the time H is always established 1 Not equal to h i +j i But is H 1 =h i +j i +X i The method comprises the steps of carrying out a first treatment on the surface of the In this way, the respective X values, 0 and … X, of the value relative to the initial stabilization time 1 at the fixed interval time within the continuous time t are obtained by the above-described manner 3 …X i So that the change in the terrain monitored over a continuous time t can be obtained.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (9)
1. An underwater topography variation monitoring device, comprising:
the platform base is symmetrically provided with two anchor weights connected with each other below the platform base;
the measuring instrument is arranged on the platform base and is used for measuring the vertical depth;
the winch is arranged on the platform base, the winch is arranged corresponding to the anchor weight, a steel wire rope is arranged on the winch, and the winch is connected with the anchor weight through the steel wire rope;
the winch metering instrument is arranged corresponding to the winch and is used for recording the rotating distance of the corresponding steel wire rope under the action of the winch;
the water level sensor is arranged on the platform base;
the inclination sensor is used for detecting inclination change of the platform base relative to the horizontal plane;
the control system is respectively connected with the measuring instrument, the winch, the water level sensor and the inclination sensor;
the control system can control the winch to tighten and loosen the steel wire rope according to signal feedback of the inclination sensor and the water level sensor, so that the steel wire rope is mutually perpendicular to the platform base under the action of the anchor weight, the platform base is positioned right above the anchor weight, and the waterline position on the side face of the platform base is unchanged; the two anchor weights are respectively positioned at two ends of the platform base, and the two anchor weights are connected through anchor ropes.
2. The underwater topography variation monitoring device of claim 1, wherein a waterproof device is provided on the platform base, and the control system is located within the waterproof device.
3. The underwater topography variation monitoring device of claim 1, further comprising a power supply device disposed on the platform base.
4. An underwater topography variation monitoring device as claimed in claim 3 wherein the platform base is provided with through holes at both ends.
5. The underwater topography variation monitoring device of claim 4, wherein the water level sensor is located within the through bore.
6. The underwater topography variation monitoring device of claim 1, wherein the platform base is of a boat type construction.
7. The underwater topography variation monitoring device of claim 1, wherein the measuring instrument is located at a mid-position of the platform base.
8. The underwater topography variation monitoring device of claim 1, further comprising a warning light and a measurement flag, both located on the platform base.
9. An underwater topography variation monitoring method, characterized in that it is implemented by using the underwater topography variation monitoring device as claimed in any one of claims 1 to 8, comprising the steps of:
1) Casting an anchor weight, and placing a platform base at a preset place; wherein, the anchor weight is arranged in parallel with the direction of the fluctuation tide along the water flow direction;
2) According to signals of the inclination sensor and the water level sensor, the control system controls the winch to retract and retract the steel wire rope, so that the steel wire rope is mutually perpendicular to the platform base under the action of the anchor weight, the platform base is positioned right above the anchor weight, and the waterline position on the side face of the platform base is unchanged;
3) Acquiring the rotation distance of the steel wire rope recorded by a winch metering instrument and the vertical depth data of the measuring instrument, and acquiring the continuous water bottom surface elevation value in the continuous time t by a control system according to the data, and comparing to obtain the change condition of the underwater topography in the continuous time t;
the method for calculating the siltation by using the data obtained by the underwater topography change monitoring device comprises the following steps:
firstly, eliminating the siltation or scouring, and enabling the platform base to move up and down along with the fluctuation of tide, wherein the control system controls the winch to enable the platform base to only move up and down through the steel wire rope;
when tide rises, the rotation distances of the steel wire ropes at the two ends are respectively recorded as J1 and J2, the movement distance of the steel wire ropes is recorded as Ji, and Ji is (J1+J2)/2; when tide rises, the steel wire rope is released, ji is a negative value, the reading value hi of the measuring instrument is relatively large in strain, and the two values of Ji and hi are positive and negative, so that the distance H1 = hi + Ji from the measuring instrument to the bottom in water at the starting moment 1 is established at each subsequent moment; when tide falls, the steel wire rope is in income, ji is positive, and at the moment, the reading value hi of the measuring instrument is correspondingly smaller;
when continuous measurement values in the continuous time t need to be measured, firstly recording the distance H1 from a measuring instrument at the starting time 1 to the bottom in water, and recording the moving distance Ji= (J1+J2)/2 of the steel wire rope by a winch measuring instrument, wherein i represents any time except the starting time 1; meanwhile, xi is used for representing the amount of accumulation or scouring at the bottom of underwater topography, hi is the reading value of a measuring instrument at the subsequent moment i, and the winch measuring instrument records that the moving distance of the steel wire rope is Ji at the moment, so that the value of the moment relative to the starting moment 1 meets the condition that H1=hi+ji;
if no fouling or flushing occurs at the bottom of the underwater topography, h1=hi+ji is always true, and if fouling or flushing occurs, the time H1 does not satisfy the formula h1=hi+ji, but satisfies h1=hi+ji+xi; with this cycle, the respective Xi values of the values at fixed intervals in the continuous time t with respect to the start time 1 are obtained by the above formula, thereby obtaining the change of the monitored topography in the continuous time t.
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