CN103644898B - River model test water boundaries identification measuring method - Google Patents
River model test water boundaries identification measuring method Download PDFInfo
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- CN103644898B CN103644898B CN201310653193.6A CN201310653193A CN103644898B CN 103644898 B CN103644898 B CN 103644898B CN 201310653193 A CN201310653193 A CN 201310653193A CN 103644898 B CN103644898 B CN 103644898B
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- G—PHYSICS
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
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Abstract
The invention discloses a kind of river model test water boundaries identification measuring system, it comprises the guide rail parallel with model two sides to be measured, is arranged on the survey bridge on guide rail across the left and right bank of model to be measured, and surveying bridge can move horizontally on guide rail; Survey bridge and be provided with measuring car, measuring car can survey tangential movement on bridge; Measuring car is provided with lifting drive, crane, crane can catenary motion; Crane is provided with measuring staff and pressure transducer; Measuring staff is provided with potential electrode.The driving of survey bridge, measuring car, crane and location, and the contact of measuring staff and the water surface is by computing machine control realization.The invention also discloses the method that this river model test water boundaries identification measuring system of application carries out water boundaries measurement, utilize potential electrode and pressure transducer to obtain the data of each measuring point.Degree of accuracy of the present invention is high, and automaticity is high, is sophisticated model test cross-sectional flow distribution automatic measurement system and follow-up data work for the treatment of, provides necessary detection method and detect data result.
Description
Technical field
The present invention relates to a kind of for river model test technology, more particularly it is a kind of river model test water boundaries identification measuring method.
Background technology
In the fluid model tests such as water conservancy project, river work and harbor work, in the movable-bed model test of particularly river model, need to measure key element to the water level of model section and flow velocity etc. to measure, the distribution of model test cross-sectional flow to survey project, when carrying out velocity flow profile and measuring, the left and right water boundaries of test section needs to measure, but up to the present, the left and right water boundaries of model test section is still obtained by artificial observation.
At present in model test cross-sectional flow is measured, conventional a kind of fix-point method is: with the left flowage line of section for starting point, the first left waterside of observational record section, then every certain spacing, measure the flow velocity at each specific depth of water point place (fixed according to content of the test by testing crew) in this vertical line direction, when N point (left waterside+N doubly measures spacing) has been measured, N+1 point has reached right bank then to be stopped measuring, the right flowage line of observational record.This cross-sectional flow measurement completes.Another fix-point method is for start point distance with left bank tracerse point, every certain spacing as measurement point, whether can this point be measured whether to enter water or the depth of water according to this point and meet by survey crew is on-the-spot and measure requirement and judge, when first satisfied measurement requires, observational record left waterside point data, then continued to the fluid-velocity survey of determining deviation, a bit reached right bank until lower and then stopped measuring, the right flowage line of observational record.This cross-sectional flow measurement completes.
Within 2011, my institute participates in the R&D work of national great scientific instruments equipment exploitation special " exploitation of Chinese large-sized river model test intelligent observing and controlling system " (bullets: 2011YQ070055) point task " the measurement system application and development of Yangtze River Flood Control large-sized model and demonstration (mission number: 2011YQ07005503) ", needed the exploitation comprising the intelligent observing and controlling system that the distribution of model test cross-sectional flow is measured automatically, the automatic recognition system application and development of model water surface border is one of this research contents.
Summary of the invention
The object of the invention is to the weak point overcoming above-mentioned existing background technology, and provide a kind of automaticity high, the river model test water boundaries identification measuring method that degree of accuracy is high.
The object of the invention is to be reached by following measure:
River model test water boundaries identification measuring method, it comprises two guide rails being arranged on model two sides, described guide rail is provided with survey bridge; Described survey bridge is across the left and right bank of model to be measured; Described survey bridge can along described guide rail tangential movement, described survey bridge is provided with measuring car, described measuring car is slidably connected with survey bridge, the measuring car that can move horizontally along survey bridge is provided with lifting and drives locating device, described lifting drives on locating device and is provided with crane, described crane and measuring car are slidably connected, and described crane can move up and down; Described crane is provided with measuring staff and pressure transducer; Described measuring staff is provided with potential electrode; Described survey bridge horizontal direction and X to driving and location to be controlled by cable data by computing machine or wireless data control mode realizes; The driving of described measuring car horizontal direction and Y-direction and location to be controlled by cable data by computing machine or wireless data control mode realizes; The driving of described crane vertical direction and Z-direction and location to be controlled by cable data by computing machine or wireless data control mode realizes; It comprises the steps:
Step one, on river model to be measured drive survey bridge move to selected model cross section place to be measured;
Step 2, from model left bank, measuring staff moves downward from initial point elevation with crane, first usually on left bank, resistance in the process at any time between the pressure of detected pressures sensor and potential electrode, when pressure transducer detects pressure increase, then measuring staff stops moving downward, and determines that on the beach, continent of left bank, completes the measurement of first point at first;
After step 3, measuring staff raise 5mm, measuring car moves a step pitch to right bank, start the measurement carrying out next measuring point, measuring staff is driven by crane and from up to down moves, resistance in this process at any time between the pressure of detected pressures sensor and potential electrode, due in water time potential electrode between resistance be far smaller than in atmosphere time; When potential electrode detects that resistance diminishes suddenly, then measuring staff stops moving downward, and records this measuring point in water, completes this measuring point and measures; If otherwise potential electrode does not detect that resistance diminishes suddenly, and pressure transducer detects pressure increase, then measuring staff stops moving downward, and records this measuring point on the coast, completes this measuring point and measures;
The flow process that step 4, measuring car repeat step 3 along model section from left bank to right bank is moved as scanning probe, before and after recording in adjacent two measuring points, on the coast more front, and time afterwards a bit in water, then left waterside point is in adjacent two measuring points of this group; Correspondingly, before and after recording in adjacent two measuring points, more front in water, rear a bit on the coast time, then right waterside point is organized in adjacent two measuring points at this;
The position coordinates of waterside, left and right point preserved in step 5, record, carry out follow-up data process, complete the automatic identifying in river model water surface border.
The present invention overcomes the deficiency of existing manual measurement method, and automaticity is high, and degree of accuracy is high, is sophisticated model test cross-sectional flow distribution automatic measurement system and follow-up data work for the treatment of, provides necessary detection method and detect data result.
Accompanying drawing explanation
Structural representation when Fig. 1 is river model test water boundaries identification measuring system of the present invention measurement.
Fig. 2 is that river model test water boundaries identification measuring system of the present invention drives localization function module schematic diagram.
In figure: 1-surveys bridge, 2-measuring car, 3-crane, 4-measuring staff, 5-measuring staff pressure transducer, 6-potential electrode, 7-guide rail.
Embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not form limitation of the invention, only for example.Simultaneously by illustrating that advantage of the present invention will become clearly and easy understand.
As shown in drawings, river model test water boundaries identification measuring method, it comprises two guide rails 7 being arranged on model two sides, described guide rail 7 is provided with and surveys bridge 1; Described survey bridge 1 is across the left and right bank of model to be measured; Described survey bridge 1 can along the tangential movement of described guide rail 7, described survey bridge 1 is provided with measuring car 2, described measuring car 2 is slidably connected with survey bridge 1, the measuring car 2 that can move horizontally along survey bridge 1 is provided with lifting and drives locating device, described lifting drives on locating device and is provided with crane 3, described crane 3 is slidably connected with measuring car 2, and described crane 3 can move up and down; Described crane 3 is provided with measuring staff 4 and pressure transducer 5; Described measuring staff 4 is provided with potential electrode 6; Described survey bridge 1 horizontal direction and X to driving and location to be controlled by cable data by computing machine or wireless data control mode realizes; The driving of described measuring car 2 horizontal direction and Y-direction and location to be controlled by cable data by computing machine or wireless data control mode realizes; The driving of described crane 3 vertical direction and Z-direction and location to be controlled by cable data by computing machine or wireless data control mode realizes; It comprises the steps:
Step one, on river model to be measured drive survey bridge 1 move to selected model cross section place to be measured;
Step 2, from model left bank, measuring staff 4 moves downward from initial point elevation with crane 3, first usually on left bank, resistance in the process at any time between the pressure of detected pressures sensor 5 and potential electrode 6, when pressure transducer 5 detects pressure increase, then measuring staff 4 stops moving downward, and determines that on the beach, continent of left bank, completes the measurement of first point at first;
After step 3, measuring staff 4 raise 5mm, measuring car 2 moves a step pitch to right bank, start the measurement carrying out next measuring point, measuring staff 4 is driven by crane 3 and from up to down moves, resistance in this process at any time between the pressure of detected pressures sensor 5 and potential electrode 6, due in water time potential electrode between resistance be far smaller than in atmosphere time; When potential electrode 6 detects that resistance diminishes suddenly, then measuring staff 4 stops moving downward, and records this measuring point in water, completes this measuring point and measures; If otherwise potential electrode 6 does not detect that resistance diminishes suddenly, and pressure transducer 5 detects pressure increase, then measuring staff 4 stops moving downward, and records this measuring point on the coast, completes this measuring point and measures;
The flow process that step 4, measuring car 2 repeat step 3 along model section from left bank to right bank is moved as scanning probe, before and after recording in adjacent two measuring points, on the coast more front, and time afterwards a bit in water, then left waterside point is in adjacent two measuring points of this group; Correspondingly, before and after recording in adjacent two measuring points, more front in water, rear a bit on the coast time, then right waterside point is organized in adjacent two measuring points at this;
The position coordinates of waterside, left and right point preserved in step 5, record, carry out follow-up data process, complete the automatic identifying in river model water surface border.
It should be noted that the step pitch of measuring car 2 movement in step 3 can adjust to make measurement result more accurate, measuring staff 4 rises and departs from the water surface with potential electrode 6, and electrode two ends do not have moisture film to be as the criterion.In the course of work of the present invention, whether measuring staff 4 current location touches the water surface, or measuring staff pressure transducer whether pressure is excessive, and measuring staff motion control is by the Single-chip Controlling be integrated on input drived control plate.Survey bridge 1, the driving of measuring car 2 and location and measuring staff 4 location by the functional module be integrated on control panel: survey bridge X to driving localization part, measuring car Y-direction drives localization part and flowage line differentiate calculate, measuring staff Z-direction location etc. controls by industrial computer or ordinary personal computers.Control mode can be wired or wireless control.Thus use the measuring method automaticity of water boundaries identification measuring system of the present invention high, for sophisticated model test cross-sectional flow distribution automatic measurement system and follow-up data work for the treatment of, necessary detection method is provided and detects data result, have workable, degree of accuracy is high, the advantage such as with low cost.
Other unspecified part is prior art.
Claims (1)
1. river model test water boundaries identification measuring method, it comprises two guide rails (7) being arranged on model two sides, described guide rail (7) is provided with and surveys bridge (1); Described survey bridge (1) is across the left and right bank of model to be measured; Described survey bridge (1) can along described guide rail (7) tangential movement, described survey bridge (1) is provided with measuring car (2), described measuring car (2) is slidably connected with survey bridge (1), the measuring car (2) that can move horizontally along survey bridge (1) is provided with lifting and drives locating device, described lifting drives on locating device and is provided with crane (3), described crane (3) and measuring car (2) are slidably connected, and described crane (3) can move up and down; Described crane (3) is provided with measuring staff (4) and pressure transducer (5); Described measuring staff (4) is provided with potential electrode (6); Described survey bridge (1) horizontal direction and X to driving and location to be controlled by cable data by computing machine or wireless data control mode realizes; The driving of described measuring car (2) horizontal direction and Y-direction and location to be controlled by cable data by computing machine or wireless data control mode realizes; The driving of described crane (3) vertical direction and Z-direction and location to be controlled by cable data by computing machine or wireless data control mode realizes; It is characterized in that, it comprises the steps:
Step one, on river model to be measured drive survey bridge (1) move to selected model cross section place to be measured;
Step 2, from model left bank, measuring staff (4) moves downward from initial point elevation with crane (3), first usually on left bank, resistance in the process at any time between the pressure of detected pressures sensor (5) and potential electrode (6), when pressure transducer (5) detects pressure increase, then measuring staff (4) stops moving downward, and determines that on the beach, continent of left bank, completes the measurement of first point at first;
After step 3, measuring staff (4) raise 5mm, measuring car (2) moves a step pitch to right bank, start the measurement carrying out next measuring point, measuring staff (4) is driven by crane (3) and from up to down moves, resistance in this process at any time between the pressure of detected pressures sensor (5) and potential electrode (6), due in water time potential electrode between resistance be far smaller than in atmosphere time; When potential electrode (6) detects that resistance diminishes suddenly, then measuring staff (4) stops moving downward, and records this measuring point in water, completes this measuring point and measures; If otherwise potential electrode (6) does not detect that resistance diminishes suddenly, and pressure transducer (5) detects pressure increase, then measuring staff (4) stops moving downward, and records this measuring point on the coast, completes this measuring point and measures;
The flow process that step 4, measuring car (2) repeat step 3 along model section from left bank to right bank is moved as scanning probe, before and after recording in adjacent two measuring points, on the coast more front, and time afterwards a bit in water, then left waterside point is in adjacent two measuring points of this group; Correspondingly, before and after recording in adjacent two measuring points, more front in water, rear a bit on the coast time, then right waterside point is organized in adjacent two measuring points at this;
The position coordinates of waterside, left and right point preserved in step 5, record, carry out follow-up data process, complete the automatic identifying in river model water surface border.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106544983B (en) * | 2017-01-10 | 2018-09-25 | 山东大学 | A kind of hydraulic model test water surface curve and flow rate measuring device and method |
| CN112461297B (en) * | 2020-11-25 | 2021-08-17 | 武汉大学 | Section positioning and identifying system and method for three-dimensional automatic bridge measurement of solid model |
| CN112284337B (en) * | 2020-11-25 | 2021-08-03 | 武汉大学 | River model multi-parameter measuring device and walking control method thereof |
| CN114763983B (en) * | 2022-03-28 | 2023-10-20 | 中交第四航务工程局有限公司 | Base groove leveling positioning measurement method |
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