CN204302152U - A kind of original position measures the device of suspended load concentration and grating in real time - Google Patents
A kind of original position measures the device of suspended load concentration and grating in real time Download PDFInfo
- Publication number
- CN204302152U CN204302152U CN201520013539.0U CN201520013539U CN204302152U CN 204302152 U CN204302152 U CN 204302152U CN 201520013539 U CN201520013539 U CN 201520013539U CN 204302152 U CN204302152 U CN 204302152U
- Authority
- CN
- China
- Prior art keywords
- camera
- fish lead
- laser instrument
- catoptron
- original position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model provides a kind of original position to measure the device of suspended load concentration and grating in real time, comprise fish lead, the computing machine being installed on the measuring unit in fish lead and being connected with measuring unit, described measuring unit comprises camera, micro camera lens, laser instrument, catoptron, Bao Weier prism, cylindrical convex lens, refracting set, ultrasonic fathometer, power supply unit, the front end of described camera adds micro camera lens, described laser instrument is arranged in the input path of catoptron, the emitting light path of catoptron is provided with Bao Weier prism successively, cylindrical convex lens, refracting set, the rectangular sheet light that cylindrical convex lens converges passes fish lead bottom to illuminate local, fish lead bottom water body by refracting set, the fish lead drain pan be positioned at below camera is provided with tempered glass observation window, power supply unit respectively with camera, laser instrument is connected with ultrasonic fathometer.The utility model can realize the real-time measurement of original position, can obtain instant measurement result, has unique advantage to the husky defeated dynamic monitoring moved of river water.
Description
Technical field
The utility model relates to the technical field of hydrographic survey in hydraulic engineering, and specifically a kind of original position measures the device of suspended load concentration and grating in real time.
Background technology
Fluviatic silt mainly moves with the form of suspended load, and it is defeated moves, deposit, scour process all has important impact to river bed change, hydraulic engineering safe operation etc.
According to " Code for measurement of sus pended sediment in open channels " (GB-50159-92), suspended load concentration mainly lays measuring point at measuring frequency section, uses sampling thief water sampling, then the method carrying out analyzing to indoor measures.When sediment concentration is greater than 2.0kg/m
3time, the in site measurement of isotope sand meter can be adopted.Suspended load grating is analyzed in indoor after then needing to gather water sample.
Under large depth condition, fine grained suspended sediment may move so that the form of density current is defeated, and reservoir discharging by density current is that one effectively subtracts silt operational mode.The velocity flow profile of current is that top flow velocity is large, and bottom flow velocity is little; The vertical distributing of suspended sediment concentration is then contrary, and top concentration is little, and bottom concentration is large.In the peb process of large reservoir, Sha Feng lags behind flood peak, reduces upstream water level sand discharge when when sand discharge is dispatched, needs are seized the opportunity after flood peak, Sha Feng arrives.These two kinds of operating modes all need the migration state grasping suspended sediment in real time, are difficult to according to the method for " Code for measurement of sus pended sediment in open channels " needs meeting engineering reality.
In existing instrument, (laser in situ scattering and transmissometry (LISST) may be used for field and detects in real time the laser in-situ scattering transmission measurement instrument that Sequoia Scientific company of the U.S. produces.This instrument is according to the ultimate principle of laser diffraction, light is utilized diffraction to occur to measure the size of particle through grain edges, its basic arrangement uses one-wavelength laser as light source, through the water body to be measured of several millimeters, fourier lense is arranged after measurement water body, and the photodetector be made up of the donut of multistage different-diameter is set at the back focal plane of lens, every grade of annulus accepts the light of different deviation angle, can go out the grating of suspended sediment by inverse by calibrating parameters.The front end of this instrument is provided with double-layer frame and supports fourier lense and photodetector, detects water body and is positioned at lower portion.The energy source that in fluid, silt suspends is in the turbulent fluctuation of current, when using in the flow fields, field such as river, the outside framework of this instrument will obviously change the Turbulent characteristics detecting water body, because silt is different from the proportion of water body, inertial force is at the volley different, the change of flow turbulence characteristic will change distribution and the grating of silt, and this impact is difficult to simulation at timing signal, so this instrument is used for still having some deficits when field is measured in real time.
Utility model content
The utility model provides a kind of original position to measure the device of suspended load concentration and grating in real time, the real-time measurement of original position can be realized, can instant measurement result be obtained, grasp the migration state of suspended sediment in real time, to the husky defeated dynamic monitoring moved of river water, there is unique advantage.
A kind of original position measures the device of suspended load concentration and grating in real time, comprise fish lead, the computing machine being installed on the measuring unit in fish lead and being connected with measuring unit, described measuring unit comprises camera, micro camera lens, laser instrument, catoptron, Bao Weier prism, cylindrical convex lens, refracting set, ultrasonic fathometer, power supply unit, the front end of described camera adds micro camera lens, described laser instrument is arranged in the input path of catoptron, the emitting light path of catoptron is provided with Bao Weier prism successively, cylindrical convex lens, refracting set, the rectangular sheet light that cylindrical convex lens converges passes fish lead bottom to illuminate local, fish lead bottom water body by refracting set, the fish lead drain pan be positioned at below camera is provided with tempered glass observation window, power supply unit respectively with camera, laser instrument is connected with ultrasonic fathometer.
Original position as above measures the device of suspended load concentration and grating in real time, described computing machine is placed on surveying vessel, for controlling the opening and closing of laser instrument, the image acquisition of camera, transmission and storage, carrying out the analysis of Measurement results and generating and detect form.
The utility model gathers water sample relative to traditional hydrologic survey suspended load sampler in river, arrive indoor again and carry out measurement of concetration and grain size analysis, workload greatly reduces, and the utility model achieves the real-time measurement of original position, can instant achievement be obtained, to the husky defeated dynamic monitoring (as staggered the time and occur in Density Currents tracking and monitoring, the husky peak of flood peak) moved of river water, there is unique advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model original position measures fish lead in the device of suspended load concentration and grating in real time;
Fig. 2 is theory diagram of the present utility model.
In figure: 1-fish lead, 2-hanged hook, 3-camera, 4-micro camera lens, 5-laser instrument, 6-catoptron, 7-Bao Weier prism, 8-laser optical path, 9-cylindrical convex lens, 10-refracting set, 11-ultrasonic fathometer, 12-power supply unit, 13-empennage, 14-computing machine, 15-tempered glass observation window.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described.
Refer to Fig. 1 and Fig. 2, the utility model provides the device of a kind of real-time measurement suspended load concentration and grating, the computing machine 14 comprising fish lead 1, be installed on the measuring unit in fish lead 1 and be connected with measuring unit.Described fish lead 1 is designed with reference to the approved product of hydrology specification, i.e. a kind of metallic lead or galvanized iron mixing is fluid origin has the hydrologic survey utensil that constant weight and slenderness ratio, profile are streamlined fish body structure, empty in described fish lead 1, described measuring unit is installed in fish lead 1, the back of fish lead 1 fish body is provided with hanged hook 2, the afterbody of fish body is installed for ensureing fish lead just to the empennage 13 carrying out flow path direction, and service cable and communication cable are introduced in fish lead 1 along hanging wirerope.The long 300cm of fish lead 1, wide 150mm, high 120cm in the present embodiment, bottom is flat, and fish lead 1 drain pan be positioned at below camera 3 is provided with tempered glass observation window 15.Described measuring unit comprises camera 3, micro camera lens 4, laser instrument 5, catoptron 6, Bao Weier prism 7, cylindrical convex lens 9, refracting set 10, ultrasonic fathometer 11, power supply unit 12.
Described computing machine 14 is placed on surveying vessel, is responsible for operation and the actual motion of each parts of control survey unit, as the image acquisition of the opening and closing of laser instrument 5, camera 3, transmission and storage, carries out the analysis of Measurement results and generates detection form.
High-resolution civilian camera selected by camera 3 in described measuring unit, and such as select the mono-electric camera of Sony α 7R, it has 3,640 ten thousand valid pixels, 32G internal memory, highest resolution 7360 × 4912, cmos sensor silent frame size 35.9 × 24mm2, Pixel Dimensions 4.8 × 4.8 μm
2, physical dimension: 126.9 × 94.4 × 48.2mm
3.
The front end of described camera 3 adds micro camera lens 4, and Nikon 1 Nikkor 10mm f/2.8 wide-angle lens selected by the present embodiment micro camera lens 4, size Φ 55.5 × 22.Processing special interface, coordinates camera lens with Sony α 7R camera and oppositely installs.Preliminary test shows, the picture size of silent frame shooting is about 4 × 3mm2, distorts very little.
The resolution of real scene image is 7360/4000=1.84 Pixel/ μm, and in the test of suspended sediment grating, smallest particles diameter class is 2 μm, then a silt the thinnest about 8 pixels, can measure the grating of suspended sediment more exactly.The volumetric concentration of the area ratio conversion silt shared by plane of delineation silt.
Described laser instrument 5 is arranged in the input path of catoptron 6, the emitting light path of catoptron 6 is provided with successively Bao Weier prism 7, cylindrical convex lens 9, refracting set 10, as shown in Figure 1, to be that two panels is parallel be oppositely arranged and the catoptron tilted described refracting set 10, wherein a slice catoptron is towards the emitting light path of cylindrical convex lens 9, and the emitting light path of another sheet catoptron is positioned at fish lead 1 bottom.
The new 520nm-OEM-1W laser instrument that described laser instrument 5 can select Beijing Lei Zhiwei photoelectricity technology corporation, Ltd. to produce, physical dimension 100 × 43 × 26, wavelength 520nm, power 1W.Laser exit spot diameter is less than 1.0mm, and the angle of divergence is less than 5mrad.Laser instrument 5 lies low installation in fish lead 1.
The laser beam backward launched that described laser instrument 5 sends, light beam is made to turn back 180 degree through reflective mirror 6, fanning strip light is extended to through Bao Weier prism 7, pool the wide rectangular sheet light of 6mm with cylindrical convex lens 9 again, after finally rectangular sheet light being imported fish lead less than 13 ~ 5mm by refracting set 10 through fish lead 1 bottom, horizontal forward transmitting is to illuminate local water body.
Power supply unit 12 is connected with camera 3, laser instrument 5 and ultrasonic fathometer 11 respectively, for unit provides working power.
The use procedure of the utility model device is described as follows:
Surveying vessel is installed computing machine 14, with steel wire hang fish lead 1.Surveying vessel is positioned on the survey line of section to be measured, puts down fish lead 1 with winch, in the hovering of certain depth of water place, after measuring the depth of water of more than fish lead with ultrasonic fathometer 11, calculate the elevation of measuring point.Open laser instrument 5, the local water body of rectangular sheet illumination bright fish lead 1 bottom, camera 3 continuously shot images is also stored in the memory card of camera 3, and each measuring point collection about 800 images, roughly take an image p.s., about 15 minutes lasting sampling times.
Often open photo 36.4M, then the data of a measuring point are close to the memory size of camera 1, after namely a measuring point collection completes, to need the image transmitting in camera 1 by communication cable, to the computing machine 14 on surveying vessel, then to empty camera memory card.Change the degree of depth of fish lead, carry out the image acquisition of next measuring point.After on this survey line, all measuring points have gathered, traverse measurement ship, carries out the collection of next survey line, until complete full face measurement.Instant detection as dynamic in needs, then gather 100 two field pictures and can draw analysis result fast.
Data handling procedure is as follows: processed frame by frame by the image of collection, draw the projecting plane parameter of suspended load particle, area conversion particle diameter is held with waiting, according to the morphological parameters of particle image measuring and calculating particle, as circularity, sphericity, shape coefficient etc., from image, the area of overall particle calculates sediment concentration; The grating of suspended load is calculated according to particle diameter.
By the interpret data population mean of all images of each measuring point, draw sediment concentration and the grating of this measuring point, and obtain the distribution of vertical line sediment concentration further, tunneling boring weighted mean then can obtain the basic datas such as section silt discharge, average grading.
Claims (2)
1. an original position measures the device of suspended load concentration and grating in real time, it is characterized in that: comprise fish lead (1), the computing machine (14) being installed on the measuring unit in fish lead (1) and being connected with measuring unit, described measuring unit comprises camera (3), micro camera lens (4), laser instrument (5), catoptron (6), Bao Weier prism (7), cylindrical convex lens (9), refracting set (10), ultrasonic fathometer (11), power supply unit (12), the front end of described camera (3) adds micro camera lens (4), described laser instrument (5) is arranged in the input path of catoptron (6), the emitting light path of catoptron (6) is provided with successively Bao Weier prism (7), cylindrical convex lens (9), refracting set (10), the rectangular sheet light that cylindrical convex lens (9) converges by refracting set (10) through fish lead (1) bottom with illuminate fish lead (1) bottom local water body, fish lead (1) drain pan being positioned at camera (3) below is provided with tempered glass observation window (15), power supply unit (12) respectively with camera (3), laser instrument (5) is connected with ultrasonic fathometer (11).
2. original position as claimed in claim 1 measures the device of suspended load concentration and grating in real time, it is characterized in that: described computing machine (14) is placed on surveying vessel, for controlling the opening and closing of laser instrument (5), the image acquisition of camera (3), transmission and storage, carrying out the analysis of Measurement results and generating and detect form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520013539.0U CN204302152U (en) | 2015-01-09 | 2015-01-09 | A kind of original position measures the device of suspended load concentration and grating in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520013539.0U CN204302152U (en) | 2015-01-09 | 2015-01-09 | A kind of original position measures the device of suspended load concentration and grating in real time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302152U true CN204302152U (en) | 2015-04-29 |
Family
ID=53107683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520013539.0U Active CN204302152U (en) | 2015-01-09 | 2015-01-09 | A kind of original position measures the device of suspended load concentration and grating in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204302152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535462A (en) * | 2015-01-09 | 2015-04-22 | 长江水利委员会长江科学院 | Device and method for measuring concentration and graduation of suspended load in real time in situ |
| CN110108611A (en) * | 2019-05-28 | 2019-08-09 | 山东大学 | A kind of river load content measurement device and method |
-
2015
- 2015-01-09 CN CN201520013539.0U patent/CN204302152U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535462A (en) * | 2015-01-09 | 2015-04-22 | 长江水利委员会长江科学院 | Device and method for measuring concentration and graduation of suspended load in real time in situ |
| CN104535462B (en) * | 2015-01-09 | 2017-12-15 | 长江水利委员会长江科学院 | A kind of device and method of measurement suspended load concentration and grading in real time in situ |
| CN110108611A (en) * | 2019-05-28 | 2019-08-09 | 山东大学 | A kind of river load content measurement device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106404623B (en) | Suspended Sedimentation Concentration monitors system and monitoring method | |
| CN107894381B (en) | South is for river Sand measuring device and method | |
| CN103971406A (en) | Underwater target three-dimensional reconstruction method based on line structured light | |
| Puleo et al. | Bed level fluctuations in the inner surf and swash zone of a dissipative beach | |
| Zhang et al. | Tracking of saltating sand trajectories over a flat surface embedded in an atmospheric boundary layer | |
| CN103134942A (en) | Synchronous real-time measurement device with sand-containing concentration and muddy water flow velocity vertically distributed | |
| Hoseini et al. | Finite-length effects on dynamical behavior of rod-like particles in wall-bounded turbulent flow | |
| CN204302152U (en) | A kind of original position measures the device of suspended load concentration and grating in real time | |
| Cauteruccio et al. | Wind tunnel validation of a particle tracking model to evaluate the wind‐induced bias of precipitation measurements | |
| Zhang et al. | Two-phase measurements of wind and saltating sand in an atmospheric boundary layer | |
| Mantovanelli et al. | Devices to measure settling velocities of cohesive sediment aggregates: A review of the in situ technology | |
| Martin et al. | Combined PIV/PLIF measurements of a steady density current front | |
| CN111323360B (en) | Image acquisition equipment and detection device for particles in liquid | |
| CN104535462B (en) | A kind of device and method of measurement suspended load concentration and grading in real time in situ | |
| CN108898139A (en) | Laser radar data anti-interference processing method and its experimental provision under a kind of rainy environment | |
| CN107784261B (en) | Road surface state detection method and device | |
| CN107991262A (en) | A kind of infrared optics formula under low suspended load silt content surveys husky apparatus and method automatically | |
| Terwisscha van Scheltinga et al. | Sand particle velocities over a subaqueous dune slope using high‐frequency image capturing | |
| CN208847652U (en) | A kind of infrared optics formula under low suspended load silt content surveys husky device automatically | |
| Marino et al. | Measuring rock slope damage on rubble mound breakwater through digital photogrammetry | |
| Zhan et al. | Particle imaging auto-measurement system for microphysical characteristics of raindrops in natural rain | |
| CN103035011B (en) | A kind of method for estimating motion vector of based target feature | |
| CN105987866A (en) | Heterogeneous liquid settlement automatic-monitoring method and device | |
| CN108037051A (en) | A kind of intelligent cleaning formula surveys husky apparatus and method | |
| Bohbot-Raviv et al. | Turbulence statistics of canopy-flows using novel lagrangian measurements within an environmental wind tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |