CN101338573A - Three-dimensional display process in realtime construction of trailing suction hopper dredger - Google Patents
Three-dimensional display process in realtime construction of trailing suction hopper dredger Download PDFInfo
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- CN101338573A CN101338573A CNA2007100432984A CN200710043298A CN101338573A CN 101338573 A CN101338573 A CN 101338573A CN A2007100432984 A CNA2007100432984 A CN A2007100432984A CN 200710043298 A CN200710043298 A CN 200710043298A CN 101338573 A CN101338573 A CN 101338573A
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- trailing suction
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Abstract
The invention discloses a three-dimensional display method in the real-time construction of a trailing suction hopper dredger, which relates to a method for providing a three-dimensional drag arm and a three-dimensional sounding chart for a trailing suction hopper dredger during the construction. Aiming at the problem that the display of the prior two-dimensional drag arm indicator system is not vivid enough, the drag arm posture display is accurately and duly displayed through establishing a dredger body and a drag arm three-dimensional mold and real-time signals, to really revert the posture of the drag arm under the water, and a three-dimensional sounding chart is established through a sounding file to display the water depth in the seaway in a three-dimensional way. The technical proposal comprises the steps that the information of the drag arm indicator system is acquired, sounding data is obtained through the interface of the sounding file, the parameter data of the dredger body and the drag arm is obtained through the interface of a dredger body configuration file, and positioning and drag arm data is accessed in real time. The method is characterized in that three-dimensional mold establishment is performed by adopting OpenGL, and the three-dimensional mold is displayed in the computer of a system in real time. The method is applied to the three-dimensional display in the real-time construction of the trailing suction hopper dredger.
Description
Technical field:
The present invention relates to provide for the trailing suction hopper dredger construction method of three-dimensional rake arm, three-dimensional sounding chart.
Background technology
Trailing suction hopper dredger outfit rake arm indication mechanism is constructed to trailing suction hopper dredger and has been played very big directive function, especially in " sweeping shallow " stage, this stage generally is the ending stage in engineering, the depth of water in whole navigation channel reaches design head substantially, have only a small amount of " shallow point ", promptly the subregion depth of water is more shallow." sweep shallow " and be meant according to the depth of water file of measuring, the zone that the depth of water is more shallow uses different color marks to instruct the trailing suction hopper dredger construction.Original system all is based upon on the basis of two dimensional surface, has the function of Three-dimensional Display in some measuring system, but all is after-treatment system, can not be applied to realtime construction.
The rake arm Position Indicator System of trailing suction hopper dredger shows side observation figure and top view figure, namely shows the rake arm state of vertical direction and horizontal direction.Behaviour for trailing suction hopper dredger harrows hand, and such demonstration is image not enough, and particularly the demonstration when excavating the sideline is not enough vivid.Driver for trailing suction hopper dredger, the rake arm deixis deficiency on plane, when " sweeping shallow ", the driver need control the motion of ship, drag head can be moved to ship on " shallow point ", the driver just needs the information of rake arm attitude, drag head position, hull position, " shallow point " position as foundation, and present plane positioning system only can provide rake arm, drag head in the projected position of horizontal plane and two dimension " shallow point " position that can only pass through the color differentiating depth, such demonstration is image equally inadequately, directly the precision and the efficient of influence " sweeping shallow ".
Summary of the invention
The present invention is directed to present rake arm indication mechanism and have the not enough problem of image of demonstration, need to be by foundation and the live signal of hull with the threedimensional model of rake arm, realize that accurately real-time rake arm attitude shows, the underwater attitude of real reduction rake pipe, and make up three-dimensional sounding chart by the depth measurement file, depth of water situation in the stereoscopic display navigation channel.
Technical scheme of the present invention comprises the information gathering of rake arm indication mechanism, obtain the depth measurement data by the interface with the depth measurement file, interface by the hull configuration file obtains hull and rake arm supplemental characteristic, and insert and locate in real time and rake arm data, it is characterized in that adopting OpenGL to carry out three-dimensional modeling, in component computer, show in real time threedimensional model.
The real-time three-dimensional model that the present invention sets up, can in system, show on the computer arbitrarily, the present invention keeps original function by the color differentiating depth, three-dimensional visual effect can make the depth more very clear, and whether super drag head dark, the Three-dimensional Display that demonstrates that can also image crossed and harrowed the automatic reduction of mud layer afterwards.3-D view is not only constructed for the pilot control trailing suction hopper dredger and is offered help, and behaviour's rake hand is also had actual directive significance.
The specific embodiment
Technical scheme of the present invention comprises the information gathering of rake arm indication mechanism, obtain the depth measurement data by the interface with the depth measurement file, obtain hull and rake arm supplemental characteristic with the interface of hull configuration file, and insert and locate in real time and rake arm data, employing OpenGL carries out three-dimensional modeling, sets up in the computer of real-time threedimensional model in system to show.The demonstration of 3-D graphic is had relatively high expectations for computer, and the Three-dimensional Display refresh time of whole boats and ships is longer, and at 1.6G dominant frequency CPU, under the situation of 512M internal memory, refreshing a width of cloth interface needs about 600ms, can not stand for real-time system.Can improve display speed by following processing: whole figure is shown be divided into 8 functional blocks, each functional block comprises the function of a part: left behaviour harrows the hand three-dimensional side view; Left behaviour harrows the hand three dimensional back view; Right behaviour harrows the hand three-dimensional side view; Right behaviour harrows the hand three dimensional back view; Driver's view; Stowage figure; Local drag head view; The front end preview graph.Each functional block is local again uses complete 3-D view, and adopts blanking or roughening treatment in its part of not paying close attention to, to improve display speed.For example harrow in the hand three-dimensional side view left behaviour, the equipment such as right rake pipe and mud door are by blanking, and the equipment roughening treatments such as A cabinet frame.
High-precision construction need be adopted the support of multi-beam survey data, and the data volume that multi-beam is measured is very huge, and for the nearly 200M byte of the navigation channel data volume of 10km, it is impossible that data are presented on the screen fully.The present invention adopts the mode of progressively reading in the segmentation demonstration to process.For trailing suction hopper dredger, only need to pay close attention to before and after this ship 300 meters, about near 100 meters situation, software systems can use the mode of searching fast that the survey mark in this rectangle is found out in mass file, and be presented on the screen, this process is independently carried out by a background program fully, do not influence the operation of main program, the readout of this process and VCD is similar.
Rake pipe indication mechanism obtains the particular location of drag head sounding chart from software and rake pipe indication hardware information and location hardware information interface, when drag head in mining process, corresponding data should be changed on the sounding chart.In this process, it is impossible using stepless processing mode.System is divided into the cell of 1 * 1 (can be provided with) with drag head, and for example drag head length is 3 meters, and width is 2 meters, after in fact each drag head is crossed rake, will have the degree of depth of 6 depth measurement color lumps will be covered as the current drag head degree of depth.
Because the depth measurement file is massive data files, can not when each excessively rake, carry out operating writing-file (causing easily hard disk deadlock or system crash), crossing the rake data will at first remain in the internal memory, become non-dredging during state again by the background program writing in files from the state of dredging at every turn.
The depth measurement file is the matrix file, uses matrix display more directly perceived, and triangular form shows that then third dimension is stronger.In the work progress, realize the real-time processing and the demonstration of depth measurement file, reach effect three-dimensional true to nature.Because trailing suction hopper dredger is long (more than 100 meters) generally, in the littler situation of depth difference (such as 30cm), check that from more than 100 meters distant places the difference in height of 30cm is unconspicuous.Adopted a local figure that amplifies to be used to show local amplification situation.According to the operating characteristic of dredger, the zone (such as 50 meters wide, 20 meters are long, can arrange) of a part can be set in 200 meters of distance drivers (can arrange) dead ahead, driver's visual angle is virtual in the zone of this part.Because the effect of amplifying, the depth of water of regional area in 200 meters in the place ahead changed and will see too clearly this moment.
Claims (4)
1. three-dimensional display process in realtime, comprise the collection of rake arm indication mechanism information, obtain the depth measurement data by the interface with the depth measurement file, interface by the hull configuration file obtains hull and rake arm supplemental characteristic, and insert in real time the location and harrow the arm data, it is characterized in that adopting OpenGL to carry out three-dimensional modeling, show threedimensional model in the computer in system in real time.
2. 3 D displaying method in the realtime construction of trailing suction hopper dredger according to claim 1, it is characterized in that display graphics in the computer is divided into 8 functional blocks, each functional block comprises the function of a part, each functional block is local again uses complete 3-D view, and adopts blanking or roughening treatment in its part of not paying close attention to.
3. three-dimensional display process in realtime according to claim 1, it is characterized in that before and after this ship of fast finding 300 meters, about near 100 meters dimensional topography and be presented on the screen.
4. three-dimensional display process in realtime according to claim 1 is characterized in that adopting a local figure that amplifies to show local amplification situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100432984A CN101338573A (en) | 2007-07-02 | 2007-07-02 | Three-dimensional display process in realtime construction of trailing suction hopper dredger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100432984A CN101338573A (en) | 2007-07-02 | 2007-07-02 | Three-dimensional display process in realtime construction of trailing suction hopper dredger |
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| Publication Number | Publication Date |
|---|---|
| CN101338573A true CN101338573A (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100432984A Pending CN101338573A (en) | 2007-07-02 | 2007-07-02 | Three-dimensional display process in realtime construction of trailing suction hopper dredger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104838072A (en) * | 2012-09-14 | 2015-08-12 | 3D图像自动控制控股有限公司 | Reclaimer 3D volume rate controller |
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2007
- 2007-07-02 CN CNA2007100432984A patent/CN101338573A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104838072A (en) * | 2012-09-14 | 2015-08-12 | 3D图像自动控制控股有限公司 | Reclaimer 3D volume rate controller |
| US9637887B2 (en) | 2012-09-14 | 2017-05-02 | 3D Image Automation Pty Ltd | Reclaimer 3D volume rate controller |
| CN104838072B (en) * | 2012-09-14 | 2017-08-18 | 3D图像自动控制控股有限公司 | Reclaimer three-D volumes rate control device and its control method |
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Open date: 20090107 |