CN205810283U - A kind of control room mosaic display screen - Google Patents
A kind of control room mosaic display screen Download PDFInfo
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- CN205810283U CN205810283U CN201620471487.6U CN201620471487U CN205810283U CN 205810283 U CN205810283 U CN 205810283U CN 201620471487 U CN201620471487 U CN 201620471487U CN 205810283 U CN205810283 U CN 205810283U
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Abstract
The utility model discloses a kind of control room mosaic display screen, including multiple ring control display screens, multiple driving display screens and multiple electricity adjust display screen, the layout of described mosaic display screen is the first layout pattern or the second layout pattern, described first layout pattern is described control room mosaic display screen multi-section display on curtain wall, described second layout pattern is the ring control display screen of a wherein rail line, driving display screen and electricity adjust display screen to be arranged on the right side of control room, the ring control display screen of other rail lines, driving display screen and electricity adjust display screen multi-section display on curtain wall.This utility model can make ring control display screen, driving display screen and electricity adjust display screen subsection display information, can show the full detail amount that ring is adjusted, row is adjusted, electricity is adjusted, facilitate centralized Control, make whole monitoring management process become smooth and easy and accurate in the same time.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of control room mosaic display screen.
Background technology
Along with subway modernization and the development of automatic technology, track traffic safety and management level require to improve constantly, during operation, the relation between monitored object also becomes increasingly complex.Reliably run in order to ensure each security of system of subway, convenient operation operator are to the operation comprehensive Centralized Monitoring of implementation Process and management, metro operation command and control center needs to set up the large screen display system of rational deployment, preferably for dispatch control personnel service, improves operation management level.
Existing control room display screen is typically all and is formed by the display screen direct splicing of multiple little areas, display screen owing to using in prior art the most inevitably has wide or narrow frame, the frame spelling the DID display screen used by screen such as at present has the width of 4-10mm, the large-area displays screen being spliced is made to have the region that cannot show picture, affect picture quality, and the ring control display screen of large screen system, driving display screen and electricity adjust the irrational distribution of display screen, it is unfavorable for that dispatcher is scheduling commander to system.
The mosaic display screen that this utility model relates to is spliced by polylith DLP or polylith PDP display screen, piece size is almost negligible, the screen visible angle obtained is big, resolution is high, and polylith DLP or polylith PDP display screen difference placement scheme make control room display screen multi-section display on same curtain wall, facilitate centralized Control, make dispatcher with an optimal viewing angle view screen simultaneously, effectively help staff to make correct analysis and decision, improve the work efficiency of dispatcher.
Utility model content
Technical problem to be solved in the utility model is how to overcome prior art mosaic display screen picture quality problems, and ring control display screen, driving display screen and electricity adjust the splicing of display screen to be unfavorable for that schedule workers carries out the defect of effective dispatch control.
In order to solve above-mentioned technical problem, this utility model provides a kind of control room mosaic display screen, described control room includes mosaic display screen and curtain wall, described mosaic display screen is arranged on the curtain wall of control room, described mosaic display screen includes that multiple ring control display screen, multiple driving display screen and multiple electricity adjust display screen
The layout of described mosaic display screen is the first layout pattern or the second layout pattern, described first layout pattern is described mosaic display screen multi-section display on curtain wall, described second layout pattern is that the ring control display screen of a wherein rail line, driving display screen and electricity adjust display screen to be arranged on the right side of control room, and the ring control display screen of other rail lines, driving display screen and electricity adjust display screen multi-section display on curtain wall.
The traffic control panel next-door neighbour of wherein said control room has local control platform, center of arc's line of traffic control panel and local control platform composition overlaps with center of arc's line of driving display screen composition, and described electricity adjusts display screen and ring to adjust center of arc's line of display screen to overlap with center of arc's line of corresponding dispatching desk.
Further, the driving display screen of a described wherein rail line is multi-layer spliced display screen.
Further, described mosaic display screen is made up of polylith DLP rear-projection display screen or polylith PDP plasma panel.
Further, described control room also includes ring control dispatching desk, traffic control panel, power scheduling platform and total activation platform,
Described ring control dispatching desk (4) is arranged on the dead ahead of ring control display screen (1), described traffic control panel (5) is arranged on the dead ahead of driving display screen (2), described power scheduling platform (6) is arranged on electricity and adjusts the dead ahead of display screen (3), described ring control dispatching desk, traffic control panel and power scheduling platform form an arcwall face, described total activation platform is arranged on the dead ahead of described arcwall face, and described ring control dispatching desk, traffic control panel and power scheduling platform are 2-4 rice with the distance of mosaic display screen.
Further, the plurality of ring control display screen, multiple driving show and multiple electricity adjusts display location in a cambered surface or two cambered surfaces.
Further, when the plurality of ring control display screen, multiple driving display screen and multiple electricity adjust display location in two cambered surfaces, the plurality of ring control display location is in one of them cambered surface described, the plurality of driving display screen and multiple electricity adjust display location in another cambered surface, and the arc radius of another cambered surface described is 18-20 rice.
Further, when the plurality of ring control display screen, multiple driving display screen and multiple electricity adjust display location in a cambered surface, the arc centrage of described cambered surface overlaps with the arc centrage of total activation platform, and the arc radius of described cambered surface is 18-19 rice.
Further, described polylith DLP rear-projection display screen specification is 42 inches or 50 inches, and splicing angle between the screen of described DLP rear-projection display screen is 2.5-3.5 degree.
Further, splicing angle between the screen of described polylith PDP plasma panel is 2.5-3 degree, and described polylith PDP plasma panel specification is 50 inches or 65 inches.
Further, described ring control display screen and electricity adjust display screen to be made up of one or more PDP plasma panel, and described driving display screen is made up of polylith PDP plasma panel.
Wherein, splice angle between described screen and be DLP rear-projection display screen or PDP plasma panel mutually splices the supplementary angle obtaining angle.
Control room mosaic display screen of the present utility model, has the advantages that
1, mosaic display screen of the present utility model is spliced by polylith DLP or polylith PDP display screen, and piece size is almost negligible, and the screen visible angle obtained is big, resolution is high.
2, mosaic display screen of the present utility model makes dispatcher with an optimal viewing angle view screen, effectively helps staff to make correct analysis and decision, improves the work efficiency of dispatcher.
3, mosaic display screen of the present utility model makes ring control display screen, driving display screen and electricity adjust display screen subsection to show, the full detail amount that ring is adjusted, row is adjusted, electricity is adjusted can be shown in the same time, facilitate centralized Control, make whole monitoring management process become smooth and easy and accurate.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the polylith DLP screen connection scheme site plan of this utility model embodiment one；
Fig. 2 is the monolithic PDP screen plan layout drawing of this utility model embodiment three；
Fig. 3 is the polylith PDP screen connection scheme site plan of this utility model embodiment four.
nullIn figure: 1-ring control display screen，Number track traffic wire loop control display screen of 11-，No. bis-track traffic wire loop control display screens of 12-，No. eight track traffic wire loop control display screens of 13-，2-drives a vehicle display screen，Number rail line driving display screen of 21-，No. bis-rail line driving display screens of 22-，No. eight rail line driving display screens of 23-，3-electricity adjusts display screen，Number rail line electricity of 31-adjusts display screen，No. bis-rail line electricity of 32-adjust display screen，No. eight rail line electricity of 33-adjust display screen，4-ring control dispatching desk，Number track traffic wire loop control dispatching desk of 41-，No. bis-track traffic wire loop control dispatching desks of 42-，No. eight track traffic wire loop control dispatching desks of 43-，5-traffic control panel，Number rail line traffic control panel of 51-，No. bis-rail line traffic control panels of 52-，No. eight rail line traffic control panels of 53-，6-power scheduling platform，Number rail line power scheduling platform of 61-，No. bis-rail line power scheduling platforms of 62-，No. eight rail line power scheduling platforms of 63-，7-total activation platform，8-local control platform.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained on the premise of not making creative work, broadly fall into the scope of protection of the invention.
Embodiment one:
As it is shown in figure 1, this utility model embodiment provides a kind of control room mosaic display screen, adjust display screen 3 including a ring control display screen 1, driving display screen 2 and an electricity.
One electricity adjusts display screen 3 to be adjusted display screen, No. two rail line electricity to adjust display screen and No. eight rail line electricity to adjust display screen to form by a rail line electricity, one ring control display screen 1 is made up of a track traffic wire loop control display screen, No. two track traffic wire loop control display screens and No. eight track traffic wire loop control display screens, and one driving display screen 2 is made up of a rail line driving display screen, No. two rail line driving display screens and No. eight rail line driving display screens.
Described mosaic display screen is single layout centered by described driving display screen 2, described mosaic display screen is distributed in two cambered surfaces, described ring control display screen 1 is positioned in one of them cambered surface of said two cambered surface, described driving display screen 2 and electricity adjust display screen 3 to be positioned in another cambered surface of said two cambered surface, and described driving display screen 2 and electricity adjust the radius of display screen 3 place circular arc to be 19.2 meters.
Described mosaic display screen uses polylith DLP display screen connecting method, and the specification of described polylith DLP screen is 42 inches or 50 inches, and the splicing gap of described polylith DLP display screen is 1mm, and it is 3 degree that the horizontal direction of described polylith DLP screen is spliced between screen angle.
Described ring control dispatching desk 4 is arranged on the dead ahead of ring control display screen 1, described traffic control panel 5 is arranged on the dead ahead of driving display screen 2, described power scheduling platform 6 is arranged on electricity and adjusts the dead ahead of display screen 3, what described ring control dispatching desk 4, traffic control panel 5 and power scheduling platform 6 dead ahead were arranged is total activation platform 7, and described ring control dispatching desk 4, traffic control panel 5 and power scheduling platform 6 are away from mosaic display screen 3 meters.
Described ring adjusts display screen 4 and electricity to adjust center of arc's line of display screen 3 to overlap with center of arc's line of corresponding dispatching desk.
Low order end next-door neighbour's local control platform 8 of described traffic control panel 5, center of arc's line that center of arc's line of described traffic control panel 5 and local control platform 8 composition forms with described driving display screen 2 overlaps.
Described ring control dispatching desk 4 includes a track traffic wire loop control dispatching desk, No. two track traffic wire loop control dispatching desks and No. eight track traffic wire loop control dispatching desks, described traffic control panel 5 includes a rail line traffic control panel, No. two rail line traffic control panels and No. eight rail line traffic control panels, and described power scheduling platform 6 includes a rail line power scheduling platform, No. two rail line power scheduling platforms and No. eight rail line power scheduling platforms.
Embodiment two:
This utility model embodiment provides a kind of control room mosaic display screen, adjusts display screen including three ring control display screens, three driving display screens and three electricity, and described mosaic display screen is distributed in a cambered surface, and the arc radius of one cambered surface is 19.2 meters.
Described three ring control display screens include a track traffic wire loop control display screen, No. two track traffic wire loop control display screens and No. eight track traffic wire loop control display screens, described three display screens of driving a vehicle include that a rail line driving display screen, No. two rail lines driving display screens and No. eight rail lines driving display screens, described three electricity tune display screens include that a rail line electricity adjusts display screen, No. two rail line electricity to adjust display screens and No. eight rail line electricity to adjust display screens.
A described track traffic wire loop control display screen, a rail line driving display screen and a rail line electricity adjust display screen to be arranged on the right of control room, and other display screens are multi-section display in one cambered surface.
Described mosaic display screen is made up of polylith DLP display screen, and the specification of described polylith DLP screen is 42 inches or 50 inches, and the splicing gap of described polylith DLP display screen is 1mm, and it is 3 degree that the horizontal direction of described polylith DLP screen is spliced between screen angle.
Described ring control dispatching desk is arranged on the dead ahead of ring control display screen, described traffic control panel is arranged on the dead ahead of driving display screen, described power scheduling platform is arranged on electricity and adjusts the dead ahead of display screen, described mosaic display screen is 3 meters with the distance of ring control dispatching desk, traffic control panel and power scheduling platform, and what described ring control dispatching desk, traffic control panel and power scheduling platform dead ahead were arranged is total activation platform.
Center of arc's line of described mosaic display screen, described ring control dispatching desk, traffic control panel and center of arc's line of power scheduling platform overlap with center of arc's line of described total activation platform.
Described ring control dispatching desk includes a track traffic wire loop control dispatching desk, No. two track traffic wire loop control dispatching desks and No. eight track traffic wire loop control dispatching desks, described traffic control panel includes a rail line traffic control panel, No. two rail line traffic control panels and No. eight rail line traffic control panels, and described power scheduling platform includes a rail line power scheduling platform, No. two rail line power scheduling platforms and No. eight rail line power scheduling platforms.
Embodiment three:
As in figure 2 it is shown, this utility model embodiment provides a kind of control room mosaic display screen, adjust display screen 3 including three ring control display screens 1, three driving display screen 2 and three electricity.
Described mosaic display screen is single layout centered by described three driving display screens 2, and described mosaic display screen is distributed in a cambered surface, and the arc radius of one cambered surface is 19 meters.
Described three ring control display screens 1 include 11, No. two track traffic wire loop control display screens 12 of a track traffic wire loop control display screen and No. eight track traffic wire loop control display screens 13, described three display screens 2 of driving a vehicle include that 21, No. two rail lines driving display screens 22 of a rail line driving display screen and No. eight rail lines driving display screens 23, described three electricity tune display screens 3 include that a rail line electricity adjusts 31, No. two rail line electricity of display screen to adjust display screens 32 and No. eight rail line electricity to adjust display screens 33.
Described three ring control display screens 1 and three electricity adjust display screen 3 to be made up of one piece of PDP rear-projection display screen respectively, and described three driving display screens 2 are made up of two pieces of PDP rear-projection display screens respectively.
The specification of described polylith PDP plasma panel is 50 inches or 65 inches, and the splicing gap of described polylith PDP plasma panel is 3mm, and it is 2.8 degree that the horizontal direction of described polylith PDP plasma panel is spliced between screen angle.
Described ring control dispatching desk 4 is arranged on the dead ahead of ring control display screen 1, described traffic control panel 5 is arranged on the dead ahead of driving display screen 2, described power scheduling platform 6 is arranged on electricity and adjusts the dead ahead of display screen 3, described mosaic display screen is 2.5 meters with the distance of ring control dispatching desk 4, traffic control panel 5 and power scheduling platform 6, and what described ring control dispatching desk 4, traffic control panel 5 and power scheduling platform 6 dead ahead were arranged is total activation platform 7.
Center of arc's line of described mosaic display screen, described ring control dispatching desk 4, traffic control panel 5 and center of arc's line of power scheduling platform 6 overlap with center of arc's line of described total activation platform 7.
Described ring control dispatching desk 4 includes 41, No. two track traffic wire loop control dispatching desks 42 of a track traffic wire loop control dispatching desk and No. eight track traffic wire loop control dispatching desks 43, described traffic control panel 5 includes 51, No. two rail line traffic control panels 52 of a rail line traffic control panel and No. eight rail line traffic control panels 53, and described power scheduling platform 6 includes 61, No. two rail line power scheduling platforms 62 of a rail line power scheduling platform and No. eight rail line power scheduling platforms 63.
Embodiment four:
As shown in Figure 3, this utility model embodiment provides a kind of control room mosaic display screen, described mosaic display screen is adjusted 3, ring control display screen 1 of display screen and a driving display screen 2 to be spliced into a complete cambered surface by an electricity, described mosaic display screen multi-section display in cambered surface, the arc radius of described cambered surface is 19 meters.
One electricity adjusts display screen 3 to be adjusted display screen by a rail line electricity, No. two rail line electricity adjust display screen and No. eight rail line electricity to adjust display screen to constitute a three floor full-screen panel, one ring control display screen 1 is by a track traffic wire loop control display screen, No. two track traffic wire loop control display screens and No. eight track traffic wire loop control display screens constitute a three floor full-screen panel, one driving display screen 2 is by a rail line driving display screen, No. two rail line driving display screens and No. eight rail line driving display screens constitute a three floor full-screen panel.
Described mosaic display screen is made up of polylith PDP rear-projection display screen, the specification of described polylith PDP plasma panel is 42 inches or 50 inches, the splicing gap of described polylith PDP plasma panel is 3mm, and it is 2.8 degree that the horizontal direction of described polylith PDP plasma panel is spliced between screen angle.
Described ring control dispatching desk 4 is arranged on the dead ahead of ring control display screen 1, described traffic control panel 5 is arranged on the dead ahead of driving display screen 2, described power scheduling platform 6 is arranged on electricity and adjusts the dead ahead of display screen 3, described mosaic display screen is 2.5 meters with power scheduling platform 6, ring control dispatching desk 4 and traffic control panel 5 distance, and what described power scheduling platform 6, ring control dispatching desk 4 and traffic control panel 5 dead ahead were arranged is total activation platform 7.
Center of arc's line of center of arc's line of described mosaic display screen, described ring control dispatching desk 4, traffic control panel 5 and center of arc's line of power scheduling platform 6 and described total activation platform 7 overlaps.
Described power scheduling platform 6 includes a rail line power scheduling platform, No. two rail line power scheduling platforms and No. eight rail line power scheduling platforms, described ring control dispatching desk 4 includes a track traffic wire loop control dispatching desk, No. two track traffic wire loop control dispatching desks and No. eight track traffic wire loop control dispatching desks, and described traffic control panel 5 includes a rail line traffic control panel, No. two rail line traffic control panels and No. eight rail line traffic control panels.
The mosaic display screen that this utility model relates to is spliced by polylith DLP or polylith PDP display screen, piece size is almost negligible, the screen visible angle obtained is big, resolution is high, and polylith DLP or polylith PDP display screen difference placement scheme make ring control display screen, driving display screen and electricity adjust display screen multi-section display on same curtain wall, facilitate centralized Control, make dispatcher with an optimal viewing angle view screen simultaneously, effectively help staff to make correct analysis and decision, improve the work efficiency of dispatcher.
The above is several preferred implementations of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a control room mosaic display screen, it is characterised in that described control room includes that splicing is aobvious
Display screen and curtain wall, described mosaic display screen is arranged on the curtain wall of control room, described tiled display
Screen includes that multiple ring control display screen (1), multiple driving display screen (2) and multiple electricity adjust display
Screen (3)；
The layout of described mosaic display screen is the first layout pattern or the second layout pattern, described
One layout pattern is described mosaic display screen multi-section display on curtain wall, described second layout pattern
Ring control display screen (11), driving display screen (21) and electricity for wherein rail line
Display screen (31) is adjusted to be arranged on the right side of control room, the ring control display screen of other rail lines
(12,13), driving display screen (22,23) and electricity adjust display screen (32,33) to divide on curtain wall
District shows.
Control room mosaic display screen the most according to claim 1, it is characterised in that described
Wherein the driving display screen (21) of a rail line is multi-layer spliced display screen.
Control room mosaic display screen the most according to claim 1, it is characterised in that described
Mosaic display screen is made up of polylith DLP rear-projection display screen or polylith PDP plasma panel.
Control room mosaic display screen the most according to claim 1, it is characterised in that described
Control room also includes ring control dispatching desk (4), traffic control panel (5), power scheduling platform (6)
With total activation platform (7)；
Described ring control dispatching desk (4) is arranged on the dead ahead of ring control display screen (1), described row
Car dispatching desk (5) is arranged on the dead ahead of driving display screen (2), described power scheduling platform (6)
It is arranged on electricity and adjusts the dead ahead of display screen (3), described ring control dispatching desk (4), TD
Platform (5) and power scheduling platform (6) form an arcwall face, and described total activation platform (7) sets
Put the dead ahead at described arcwall face, described ring control dispatching desk (4), traffic control panel (5)
It is 2-4 rice with the distance of power scheduling platform (6) Yu mosaic display screen.
Control room mosaic display screen the most according to claim 3, it is characterised in that described
Multiple rings control display screen (1), multiple driving display screen (2) and multiple electricity adjust display screen (3)
It is positioned in a cambered surface or two cambered surfaces.
Control room mosaic display screen the most according to claim 5, it is characterised in that work as institute
State multiple ring control display screen (1), multiple driving display screen (2) and multiple electricity and adjust display screen (3)
When being positioned in two cambered surfaces, the plurality of ring control display screen (1) is located in one of in cambered surface,
The plurality of driving display screen (2) and multiple electricity adjust display screen (3) to be positioned in another cambered surface,
The arc radius of another cambered surface described is 18-20 rice.
Control room mosaic display screen the most according to claim 5, it is characterised in that work as institute
State multiple ring control display screen (1), multiple driving display screen (2) and multiple electricity and adjust display screen (3)
When being positioned in a cambered surface, the arc centrage of described cambered surface and the arc of total activation platform (7)
Centrage overlaps, and the arc radius of described cambered surface is 18-19 rice.
Control room mosaic display screen the most according to claim 6, it is characterised in that described
Polylith DLP rear-projection display screen specification is 42 inches or 50 inches, and described DLP rear-projection shows
Splicing angle between the screen of screen is 2.5-3.5 degree.
Control room mosaic display screen the most according to claim 7, it is characterised in that described
Splicing angle between the screen of polylith PDP plasma panel is 2.5-3 degree, described polylith PDP
Plasma panel specification is 50 inches or 65 inches.
10. according to the control room mosaic display screen described in claim 7 or 9, it is characterised in that
Described ring control display screen (1) and electricity adjust display screen (3) by one or more PDP plasma
Display screen forms, and described driving display screen (2) is made up of polylith PDP plasma panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471487.6U CN205810283U (en) | 2016-05-20 | 2016-05-20 | A kind of control room mosaic display screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620471487.6U CN205810283U (en) | 2016-05-20 | 2016-05-20 | A kind of control room mosaic display screen |
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| CN205810283U true CN205810283U (en) | 2016-12-14 |
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| CN201620471487.6U Active CN205810283U (en) | 2016-05-20 | 2016-05-20 | A kind of control room mosaic display screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109712399A (en) * | 2019-01-23 | 2019-05-03 | 广西数创智能科技有限公司 | A kind of Traffic Surveillance Video detection device and method |
| CN110148359A (en) * | 2018-02-13 | 2019-08-20 | 南京洛普科技有限公司 | A kind of hyperboloid arc-shaped display screen |
-
2016
- 2016-05-20 CN CN201620471487.6U patent/CN205810283U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110148359A (en) * | 2018-02-13 | 2019-08-20 | 南京洛普科技有限公司 | A kind of hyperboloid arc-shaped display screen |
| CN109712399A (en) * | 2019-01-23 | 2019-05-03 | 广西数创智能科技有限公司 | A kind of Traffic Surveillance Video detection device and method |
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Address after: 510000 No. 204 Huanshi West Road, Yuexiu District, Guangzhou City, Guangdong Province Co-patentee after: GUANGZHOU METRO GROUP Co.,Ltd. Patentee after: GUANGZHOU METRO DESIGN & RESEARCH INSTITUTE Co.,Ltd. Address before: 510010 Guangzhou Huanshi West Road 204 Metro Design Institute Co-patentee before: GUANGZHOU METRO GROUP Co.,Ltd. Patentee before: GUANGZHOU METRO DESIGN & RESEARCH INSTITUTE Co.,Ltd. |
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Effective date of registration: 20181122 Address after: 510000 No. 204 Huanshi West Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: GUANGZHOU METRO DESIGN & RESEARCH INSTITUTE Co.,Ltd. Address before: 510000 No. 204 Huanshi West Road, Yuexiu District, Guangzhou City, Guangdong Province Co-patentee before: GUANGZHOU METRO GROUP Co.,Ltd. Patentee before: GUANGZHOU METRO DESIGN & RESEARCH INSTITUTE Co.,Ltd. |
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