CN202947722U - Non-contact type measuring system for shallow water terrain in model test - Google Patents
Non-contact type measuring system for shallow water terrain in model test Download PDFInfo
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- CN202947722U CN202947722U CN 201220551414 CN201220551414U CN202947722U CN 202947722 U CN202947722 U CN 202947722U CN 201220551414 CN201220551414 CN 201220551414 CN 201220551414 U CN201220551414 U CN 201220551414U CN 202947722 U CN202947722 U CN 202947722U
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Abstract
The utility model discloses a non-contact type measuring system for shallow water terrain in a model test. The system comprises a terrain measuring probe, a measuring trolley, a measuring bridge, a guide track, a positioning device and a measuring control and data processing device, wherein a laser ranging probe and an ultrasonic wave ranging probe are fixed on the measuring trolley in parallel, probes are fixed on the upper portion of the water surface of the model vertically, the water is shallow in the model test, the laser probe can emit laser to penetrate through the air and the water to the underwater terrain, an ultrasonic wave probe measures the distance between the probe and the model water surface, the distance between the laser probe and the underwater terrain is calculated combined with the speed ratio of the laser in the air and in the water, the measuring trolley is combined with the measuring bridge and the guide track, and the shallow water three-dimensional terrain in the model test can be measured. The system is simple in structure, easy to establish and beneficial popularization and use. By the aid of the non-contact measuring method, the shallow water terrain in the model test can be measured quickly and accurately.
Description
Technical field
The utility model relates to measures the shallow water topography system in a kind of model test, be specifically related to the contactless measuring system of shallow water landform in a kind of model test, belongs to river seashore silt field of engineering technology.
Background technology
Complicated and changeable due to the complicacy of water movement mechanism and natural river course border, many problems are difficult to draw the mathematical analysis solution, and some solution of problem even can follow without certain rule, and model test is the important research method of carrying out river seashore research always.In model test, topographical surveying has material impact for research water flow structure and rule of sediment movement, constantly obtain new discovery and new results in research process, and advanced 3 D topographic surveying technology seems most important.
Model test is based on similarity theory, and the river is carried out entity simulation, and discloses accordingly the inherent law of river motion, and a kind of research method of scientific basis is provided for theoretical research and engineering design.Physical model is according to the actual landform data, dwindles forming according to certain guide according to similarity theory, and in model test, the depth of water more shallow (tens centimeters left and right) usually, in addition, require little to the disturbance of landform during measurement.
Topographical surveying technology in model test is broadly divided into contact type measurement and non-contact measurement two classes at present, and the contact Topographical indicator mainly comprises: chaining pin, Photoelectric Rcflecting Topographic Apparatus, resistance-type Topographical indicator, tracking mode Topographical indicator etc.During due to measurement, probe needs the contact bed surface, measures efficient and precision lower, and current and landform are had certain interference, and the contact Topographical indicator is replaced by contactless Topographical indicator gradually.Contactless Topographical indicator mainly contains the ultrasound wave Topographical indicator, but ultrasonic probe need to be placed under water when measuring underwater topography, and certain measurement blind area is arranged, and can't measure when the depth of water is more shallow.
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides the contactless measuring system of shallow water landform in a kind of model test.
Technical scheme: for achieving the above object, the contactless measuring system of shallow water landform in a kind of model test of the present utility model, comprise laser ranging probe, ultrasonic ranging probe, measure dolly, stadimeter, driving motor, wire wheel, guide rail, survey bridge, the model water surface, model underwater topography and measure and control and data processing equipment, described laser ranging probe and ultrasonic ranging probe side by side and be parallel to each other to be fixed on and measure on dolly, laser ranging probe and ultrasonic ranging probe be the vertical model water surface top be fixed in all; Described guide rail and survey bridge all are positioned on the surface level direction, the direction of surveying bridge is mutually vertical with the direction of guide rail, described driving motor drives the measurement dolly in conjunction with wire wheel and moves on the survey bridge, and described survey bridge moves freely on guide rail, and stadimeter positions measuring dolly; Measure control and data processing equipment control survey dolly (3) scanning underwater topography and carry out data and process and show.
As preferably, described laser ranging probe and ultrasonic ranging probe adopt the precision distance measurement sensor, and guarantee to place perpendicular to the water surface, to eliminate the impact of underwater laser refraction.
beneficial effect: the contactless measuring system of shallow water landform in a kind of model test of the present utility model, simple in structure, be easy to build, be conducive to promote the use of, because the depth of water in model test is more shallow, the penetrable air of laser ranging probe Emission Lasers, the water two media arrives underwater topography, the ultrasonic ranging probe measurement is from popping one's head in to the distance of the model water surface, ratio in conjunction with the speed of laser in empty G﹠W, calculate laser probe to the distance of underwater topography, measuring control and data processing equipment control survey dolly moves on the survey bridge, surveying bridge moves freely on guide rail, and position by stadimeter, gather 3 d measurement data and carry out analyzing and processing, realize by shallow water landform in contactless method scanning survey model test, this method can be by the shallow water landform in the fast accurate measurement model test of contactless measuring method.
Description of drawings
Fig. 1 is the contactless measuring system schematic diagram of shallow water landform in model test of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the dynamic display system of streak line in a kind of current of the present utility model, comprise laser ranging probe 1, ultrasonic ranging probe 2, measurement dolly 3, stadimeter 4, driving motor 5, wire wheel 6, guide rail 7, survey bridge 8, the model water surface 9, model underwater topography 10 and measure and control and data processing equipment 11, laser ranging probe 1 and ultrasonic ranging probe 2 side by side and parallel being fixed on measure on dolly 3, laser ranging probe 1 and ultrasonic ranging probe 2 be the vertical model water surface 9 tops be fixed in all; Guide rail 7 and survey bridge 8 all are positioned on the surface level direction, the direction of surveying bridge 8 is mutually vertical with the direction of guide rail 7, driving motor 5 drives measurement dolly 3 in conjunction with wire wheel 6 and moves on survey bridge 8, surveys bridge 8 and moves freely on guide rail 7, and 4 pairs of measurement dollies 3 of stadimeter position; Measure control and data processing equipment 11 control survey dollies 3 scanning underwater topographies 10 and carry out data and process and show.
In the present embodiment, measure control and data processing equipment 11 and comprise measurement control module, data processing module and 3-D display module, specifically comprise data line, power lead, PLC controller, computer, measurement control and data processing software.
Physical model is to dwindle the solid model that forms according to certain guide according to natural river, in the key issues such as river seashore midchannel regulation, river improvement, a kind of important research means in order to simulating riverway water flow sediment movement and river bed change situation, and adopting non-contacting measuring method, the underwater topography 10 under the measurement model water surface 9 is most important.
Adopt high-precision laser range-finding probe 1 and ultrasonic ranging probe 2 in the present embodiment, laser ranging probe 1 precision≤0.1mm wherein, ultrasonic ranging probe 2 precision≤0.5mm.
Measuring system of the present utility model comprises the following steps when measuring:
A) laser ranging probe, ultrasonic ranging probe, stadimeter, driving motor etc. correctly are connected with PLC controller, computer etc.;
B) opening measurement controls and data processing equipment 11, measurement control and data processing equipment 11 control survey dolly 3 scanning surveys are regional: measure dolly 3 and move on survey bridge 8, surveying bridge 8 moves freely on guide rail 7,4 pairs of measurement dollies 3 of stadimeter position, setting along the direction of surveying bridge 8 is the x axle, being the y axle along guide rail 7 directions, is the z axle perpendicular to the direction of surface level, obtains x axial coordinate and the y axial coordinate of measuring dolly 3;
Laser ranging probe 1 Emission Lasers penetrates air, the water two media arrives underwater topography 10, ultrasonic ranging probe 2 is measured from popping one's head in to the distance of the model water surface 9, measure control and data processing equipment 11 in conjunction with the ratio of the speed of laser in empty G﹠W, calculate laser ranging probe 1 to the distance of underwater topography 10, obtain the z axial coordinate;
C) measurement control and data processing equipment 11 collection 3 d measurement datas carry out analyzing and processing, realize by shallow water landform in contactless method scanning survey model test, mainly comprise the following steps:
1) the measurement data H of synchronous acquisition laser ranging probe 1
lMeasurement data H with ultrasonic ranging probe 2
u, H
uBe the distance of probe from the model water surface 9;
2) calculate laser probe 1 to the actual range of underwater topography 10: H=H
u+ (H
l-H
u)/n, n are the refractive index of laser in water;
3) in conjunction with the locator data of horizontal direction, export the three-dimensional coordinate (x, y, z) of each analyzing spot, and in conjunction with Computerized three-dimensional display technique DirectX, show the image of three-dimensional shallow water landform 10.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (1)
1. the contactless measuring system of shallow water landform in a model test, it is characterized in that: comprise laser ranging probe (1), ultrasonic ranging probe (2), measure dolly (3), stadimeter (4), driving motor (5), wire wheel (6), guide rail (7), survey bridge (8), the model water surface (9), model underwater topography (10) and measurement are controlled and data processing equipment (11), described laser ranging probe (1) and ultrasonic ranging are popped one's head in (2) side by side and are parallel to each other to be fixed on and measure on dolly (3), laser ranging probe (1) and ultrasonic ranging probe (2) is the vertical model water surface (9) top be fixed in all, described guide rail (7) and survey bridge (8) all are positioned on the surface level direction, the direction of surveying bridge (8) is mutually vertical with the direction of guide rail (7), it is upper mobile at survey bridge (8) that described driving motor (5) drives measurement dolly (3) in conjunction with wire wheel (6), described survey bridge (8) moves freely on guide rail (7), and stadimeter (4) positions measuring dolly (3), measure control and data processing equipment (11) control survey dolly (3) scanning underwater topography (10) and carry out data and process and show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551414 CN202947722U (en) | 2012-10-25 | 2012-10-25 | Non-contact type measuring system for shallow water terrain in model test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220551414 CN202947722U (en) | 2012-10-25 | 2012-10-25 | Non-contact type measuring system for shallow water terrain in model test |
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| CN202947722U true CN202947722U (en) | 2013-05-22 |
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| CN 201220551414 Expired - Lifetime CN202947722U (en) | 2012-10-25 | 2012-10-25 | Non-contact type measuring system for shallow water terrain in model test |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954782A (en) * | 2012-10-25 | 2013-03-06 | 水利部交通运输部国家能源局南京水利科学研究院 | Non-contact measuring system and non-contact measuring method for shallow water terrain in model test |
| CN104482882A (en) * | 2014-12-22 | 2015-04-01 | 河海大学 | Break opening measuring instrument used in overtopping dam break tests and measuring method |
| CN105137439A (en) * | 2015-05-19 | 2015-12-09 | 上海海事大学 | Two-dimensional cyclic single wave beam water sound measurement system and measurement method |
| CN109974813A (en) * | 2019-04-11 | 2019-07-05 | 福建农林大学 | Water-depth measurement method based on dual probe |
-
2012
- 2012-10-25 CN CN 201220551414 patent/CN202947722U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954782A (en) * | 2012-10-25 | 2013-03-06 | 水利部交通运输部国家能源局南京水利科学研究院 | Non-contact measuring system and non-contact measuring method for shallow water terrain in model test |
| CN102954782B (en) * | 2012-10-25 | 2016-04-06 | 水利部交通运输部国家能源局南京水利科学研究院 | The contactless measuring system of shallow water landform and measuring method in a kind of model test |
| CN104482882A (en) * | 2014-12-22 | 2015-04-01 | 河海大学 | Break opening measuring instrument used in overtopping dam break tests and measuring method |
| CN105137439A (en) * | 2015-05-19 | 2015-12-09 | 上海海事大学 | Two-dimensional cyclic single wave beam water sound measurement system and measurement method |
| CN105137439B (en) * | 2015-05-19 | 2017-06-09 | 上海海事大学 | A kind of two-dimentional rotary type simple beam underwater acoustic measurement system and its measuring method |
| CN109974813A (en) * | 2019-04-11 | 2019-07-05 | 福建农林大学 | Water-depth measurement method based on dual probe |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
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| CX01 | Expiry of patent term |