CN104967829B - Bullet train video DAS (Driver Assistant System) - Google Patents
Bullet train video DAS (Driver Assistant System) Download PDFInfo
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- CN104967829B CN104967829B CN201510414364.9A CN201510414364A CN104967829B CN 104967829 B CN104967829 B CN 104967829B CN 201510414364 A CN201510414364 A CN 201510414364A CN 104967829 B CN104967829 B CN 104967829B
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Abstract
The present invention provides a kind of bullet train video DAS (Driver Assistant System), solves the problems, such as the normal operation that haze weather influences bullet train；Its scheme is, including the video assistant equipments on board on bullet train and surface-based video analytic system, described shooting collecting device is connected with video data processing element, video data processing element is connected with data record unit, video data processing element is connected with driver monitoring terminal, and shooting collecting device, video data processing element, data record unit, driver monitoring terminal are all connected with power subsystem；The present invention carries out Penetrating Fog working process using high speed ultra-low illumination, the dynamic photosensitive sensor of ultra-wide, while to image information, display on driver monitoring display terminal is become apparent from reliable image；And aid in increasing characteristic image identification, complete assist driver and drive；The present invention also has data compression, the function of storage, when carrying out data analysis, can carry out retrieval by window to video.
Description
Technical field
The present invention relates to processing system for video and Train Control Technology field, particularly a kind of train system of bullet train
Video auxiliary drives analysis system.
Background technology
In recent years, the high speed development of China's economic, high-speed railway is also fast-developing therewith, the raising of speed, to railway road
Base flatness improves a lot, and to adapt to the requirement in railway speed, it is more and more to cross mountain tunnel so that bullet train is entering
When going out tunnel, the light change in the driver visual field is violent, while the high-speed mobile of train, light and shade period of change are short so that driver
It is difficult to adapt to the strong change of extraneous light.
And recent years, economic fast development, have greater environmental impacts, air pollution is also on the rise, and air is asked
Topic has become the topic that everybody must talk, the problem of also most worry as everybody, along with the sternness of Chinese haze weather, people
The visual field seen it is dim, visible sensation distance serious curtailment, while also have a strong impact on the normal operation of bullet train, if once going out
Existing haze weather, it certainly will also cause to monitor blind area, safe for operation to railway brings hidden danger.
Video DAS (Driver Assistant System) be by front end photosensitive sensor high-speed sampling, it is dynamic using ultra-low illumination, ultra-wide
The quick change of sensor, each frame data are detected in real time using FPGA, Penetrating Fog working process are carried out to image so that
Reliable useful interface is shown on driver monitoring display terminal, assist driver drives.
Optical image signal is changed into electric signal by the general principle of ultra-low illumination shooting, if signal is very weak, is passed through
Pre-arcing road is amplified, then is handled and adjusted by various circuits, is finally obtained standard signal and is delivered to rear end progress again
Coding display record etc..
Ultra-wide dynamic is under contrast strongly, allows video camera first to carry out an instantaneous exposure to illuminated area, obtains
To a width highlights region clearly normal image and store into Data Buffer Memory, then dark portion region in scene is entered again
Slow of row, obtaining a width dark portion regional display, clearly image is also stored into Data Buffer Memory, and the above exposes
After light, using distinctive image processing algorithm, the appropriate part of brightness among two images is respectively cut, finally
It is overlapped and synthesizes and export all high-visible image in a width light and shade region.
Penetrating Fog principle refers to visible ray in flue dust or fog through the air, transmitting can be blocked and can not be by,
And near infrared light can bypass flue dust and fog and penetrate over because wavelength is longer, and the photo-sensitive cell of video camera can
To sense this part near infrared light, so can wears the monitoring of dirt Penetrating Fog using this some light to realize, invisible
In the scope of light, the infrared light for having certain frequency can penetrate fog, it is necessary to be handled on video camera and camera lens, for inciting somebody to action
The black light of this frequency is imaged, final to obtain clearly monitoring image picture.
The content of the invention
For the above situation, to overcome the defect of prior art, the purpose of the present invention is that providing a kind of bullet train regards
Frequency DAS (Driver Assistant System), solve the problems, such as that haze weather influences the normal operation of bullet train.
Its technical scheme solved is, including video assistant equipments on board on bullet train and installed in ground
Video analytic system, the described video assistant equipments on board being arranged on bullet train includes shooting collecting device, video
Data processing unit, data record unit, driver monitoring terminal and power subsystem, described shooting collecting device and video data
Processing unit is connected, and video data processing element is connected with data record unit, and video data processing element is whole with driver monitoring
End connection, shooting collecting device, video data processing element, data record unit, driver monitoring terminal all connect with power subsystem
Connect；
Surface-based video analytic system includes UPS uninterrupted power sources, data exchange transmission unit, at data analysis
Unit, Database Systems RMDB and display terminal are managed, it is auxiliary that data exchange transmission unit receives the video being arranged on bullet train
The video information of data record unit in steer is helped, data exchange transmission unit is connected with Data Analysis Services unit, number
It is connected according to analysis and processing unit with Database Systems RMDB, Data Analysis Services unit and Database Systems RMDB connect display
Terminal, data exchange transmission unit, Data Analysis Services unit, Database Systems RMDB and display terminal are all uninterrupted with UPS
Power supply connects.
The present invention is carried out Penetrating Fog to image information and added using high speed ultra-low illumination, the dynamic photosensitive sensor of ultra-wide
Work processing, display on driver monitoring display terminal is set to become apparent from reliable image；And aid in increasing characteristic image identification, as before
The high post lamp code information identification in side, splice grafting net-fault of breaking information identification etc., complete assist driver and drive；The present invention also has data pressure
Contracting, the function of storage, when carrying out data analysis, retrieval by window can be carried out to video.
Brief description of the drawings
Fig. 1 is the video assistant equipments on board structure composition schematic diagram of the present invention.
Fig. 2 is the video analytic system structure composition schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail.
In conjunction with shown in Fig. 1 and Fig. 2, a kind of bullet train video DAS (Driver Assistant System) of the present invention, including installed at a high speed
Video assistant equipments on board and surface-based video analytic system on train, described is arranged on regarding on bullet train
Frequency assistant equipments on board includes shooting collecting device, video data processing element, data record unit, driver monitoring terminal and electricity
Source unit, described shooting collecting device are connected with video data processing element, video data processing element and data records list
Member connection, video data processing element are connected with driver monitoring terminal, shooting collecting device, video data processing element, data
Recording unit, driver monitoring terminal are all connected with power subsystem；
Surface-based video analytic system includes UPS uninterrupted power sources, data exchange transmission unit, at data analysis
Unit, Database Systems RMDB and display terminal are managed, it is auxiliary that data exchange transmission unit receives the video being arranged on bullet train
The video information of data record unit in steer is helped, data exchange transmission unit is connected with Data Analysis Services unit, number
It is connected according to analysis and processing unit with Database Systems RMDB, Data Analysis Services unit and Database Systems RMDB connect display
Terminal, data exchange transmission unit, Data Analysis Services unit, Database Systems RMDB and display terminal are all uninterrupted with UPS
Power supply connects.
Described shooting collecting device is arranged at bullet train transparent part for front sight, when train operation, images collecting device pair
Front carries out IMAQ in real time.
Described power subsystem uses vehicle-mounted DC110V, is provided for the video assistant equipments on board on bullet train
Electric energy, while the external interferences such as surge, burst of pulses, high-frequency crosstalk are avoided, ensure the high reliability of Electro Magnetic Compatibility.
For described video data processing element using H.264 encoding, caused data volume per minute is about 10MB.
Described data record unit uses 32GB memory cell, using cycle index mode, can preserve 48 hours and regard
Frequency evidence.
Before the shooting collecting device is arranged on bullet train transparent part for front sight, shooting collecting device resolution ratio is 720P@
30FPS, head end video image information is gathered, sensing ambient is strong and weak, automatically controls adjustment aperture and time for exposure, uses height
Fast ultra-low illumination ccd image sensor, is operated on 60FPS, and highlights and dim light area are exposed adopt respectively automatically every time
Sample, two width pictures are obtained, is overlapped and synthesized by the rear end of shooting collecting device.
Video data processing element uses FPGA, and FPGA carries out defogging, denoising to each frame video signal, at video
Reason maximum delay is 30ms, and when the speed per hour of bullet train is 310Km/h, driver monitoring terminal shows that bullet train is advanced about
2.8m；When bullet train speed per hour is 80Km/h, driver monitoring terminal shows bullet train traveling about 0.77m；Work as bullet train
Speed per hour is less than 40Km/h, and driver monitoring terminal shows that train is advanced and is less than 0.3m.
The appropriate part of brightness in two obtained width pictures is respectively cut by video data processing element using FPGA,
Finally it is overlapped and synthesizes and export all high-visible image in a width light and shade region, composograph is operated on 30FPS, when
When outside air quality is bad, FPGA calculates image effect in real time, automatically analyzes whether image has mist or steam, dust, dirty
Penetrating Fog pattern set in advance is opened Deng exception and in real time, shooting collecting device of the control at the transparent part for front sight of bullet train
By selectively allowing the light of some special wave bands to pass through, digital image enhancement system and optics Penetrating Fog system are carried out intelligence
Linkage, has obtained image quality more more preferable than common lens, ensures the clear thorough of image.
Image information and addition record video data processing element after data record unit record processing compression receive high
Fast train mileage information, during to do subsequent analysis, retrieval by window can be carried out to video, there is driver and conductor to remember data when getting off
Record unit takes ground to.
Image after processing is presented to driver, auxiliary increase characteristic image identification, such as front by driver monitoring terminal in real time
High post lamp code information identification, splice grafting net-fault of breaking information identification etc., completes assist driver and drives.
Power subsystem uses vehicle-mounted DC110V power supplys, provides electric energy for bullet train video DAS (Driver Assistant System), protects simultaneously
Protecting system ensures the high reliability of system EMC from external interferences such as surge, burst of pulses, high-frequency crosstalks.
Data record unit is taken back ground by driver and conductor, and image information is imported into ground by data exchange transmission unit
In video analytic system, data exchange transmission unit transmits image information to Data Analysis Services unit；Data Analysis Services
The track foundation information of unit combination bullet train traveling analyzes the image information received, and the operation for producing database is former
Language, and the image information after processing is transmitted to Database Systems RMDB and stored, it is easy to inquiry of the user to historical data.
The operation principle of the present invention：Bullet train video DAS (Driver Assistant System) is aided in by the video on bullet train
Steer and surface-based video analytic system are formed, and the shooting collecting device in video assistant equipments on board is arranged on
At bullet train transparent part for front sight, when train operation, IMAQ is carried out to front in real time, and image information is transmitted to video counts
According to processing unit, after the image information after processing is carried out effect enhancing by video data processing element, pass through driver monitoring terminal
It has been shown that, while image information is subjected to H.264 coding and compressed, increase bullet train mileage information, during in order to post analysis, enter
Row retrieval by window；Image information after coding will be stored in data record unit；When driver and conductor gets off, by data records list
Member takes back ground, accesses in surface-based video analytic system, is imported image information by data exchange transmission unit
In video analytic system, image information combination electronic map is formed after image information analysis by Data Analysis Services unit
Database manipulation primitive, record the information in video service data storehouse, display terminal by ground service analyze personnel operation and
Authorize, read image analysis data, the image information data of record is shown in display terminal.
The present invention is carried out Penetrating Fog to image information and added using high speed ultra-low illumination, the dynamic photosensitive sensor of ultra-wide
Work processing, display on driver monitoring display terminal is set to become apparent from reliable image；And aid in increasing characteristic image identification, as before
The high post lamp code information identification in side, splice grafting net-fault of breaking information identification etc., complete assist driver and drive；The present invention also has data pressure
Contracting, the function of storage, when carrying out data analysis, retrieval by window can be carried out to video.
Claims (5)
1. a kind of bullet train video DAS (Driver Assistant System), including video assistant equipments on board and peace on bullet train
Video analytic system mounted in ground, it is characterised in that the described video assistant equipments on board bag being arranged on bullet train
Shooting collecting device, video data processing element, data record unit, driver monitoring terminal and power subsystem are included, described takes the photograph
Picture collecting device is connected with video data processing element, and video data processing element is connected with data record unit, video data
Processing unit is connected with driver monitoring terminal, shooting collecting device, video data processing element, data record unit, Si Jijian
Control terminal is all connected with power subsystem；
Surface-based video analytic system includes UPS uninterrupted power sources, data exchange transmission unit, Data Analysis Services list
Member, Database Systems RMDB and display terminal, data exchange transmission unit receive the video auxiliary being arranged on bullet train and driven
The video information of data record unit in equipment is sailed, data exchange transmission unit is connected with Data Analysis Services unit, data point
Analysis processing unit is connected with Database Systems RMDB, and Data Analysis Services unit and Database Systems RMDB connect display eventually
End, data exchange transmission unit, Data Analysis Services unit, Database Systems RMDB and display terminal are all uninterruptedly electric with UPS
Source connects；
It is 720P@30FPS to image collecting device resolution ratio, gathers head end video image information, sensing ambient is strong and weak, automatically
Control adjustment aperture and time for exposure, using high speed ultra-low illumination ccd image sensor, it is operated on 60FPS, it is automatic right every time
Highlights and dim light area are exposed sampling respectively, and two width pictures are obtained, and conjunction is overlapped by the rear end of shooting collecting device
Into；
Video data processing element uses FPGA, FPGA to carry out defogging, denoising to each frame video signal, and Video processing is most
Big delay is 30ms, and when the speed per hour of bullet train is 310Km/h, driver monitoring terminal shows bullet train traveling about 2.8m；
When bullet train speed per hour is 80Km/h, driver monitoring terminal shows bullet train traveling about 0.77m；When bullet train speed per hour is low
In 40Km/h, driver monitoring terminal shows that train is advanced and is less than 0.3m；
The appropriate part of brightness in two obtained width pictures is respectively cut by video data processing element using FPGA, finally
It is overlapped and synthesizes and export all high-visible image in a width light and shade region, composograph is operated on 30FPS, work as outside
When air quality is bad, FPGA calculates image effect in real time, automatically analyzes whether image has mist or steam, dust, dirty etc. different
Penetrating Fog pattern set in advance is opened often and in real time, shooting collecting device of the control at the transparent part for front sight of bullet train passes through
Selectively allow the light of some special wave bands to pass through, digital image enhancement system and optics Penetrating Fog system are carried out Intelligent joint
It is dynamic, obtain image quality more more preferable than common lens.
2. bullet train video DAS (Driver Assistant System) according to claim 1, it is characterised in that described shooting collection is set
It is standby to be arranged at bullet train transparent part for front sight.
3. bullet train video DAS (Driver Assistant System) according to claim 1, it is characterised in that described power subsystem is adopted
With vehicle-mounted DC110V, electric energy is provided for the video assistant equipments on board on bullet train.
4. bullet train video DAS (Driver Assistant System) according to claim 1, it is characterised in that at described video data
H.264, reason unit, which uses, to be encoded.
5. bullet train video DAS (Driver Assistant System) according to claim 1, it is characterised in that described data records list
Member uses 32GB memory cell, using cycle index mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414364.9A CN104967829B (en) | 2015-07-15 | 2015-07-15 | Bullet train video DAS (Driver Assistant System) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414364.9A CN104967829B (en) | 2015-07-15 | 2015-07-15 | Bullet train video DAS (Driver Assistant System) |
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| Publication Number | Publication Date |
|---|---|
| CN104967829A CN104967829A (en) | 2015-10-07 |
| CN104967829B true CN104967829B (en) | 2018-04-10 |
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| CN201510414364.9A Active CN104967829B (en) | 2015-07-15 | 2015-07-15 | Bullet train video DAS (Driver Assistant System) |
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| CN105704372B (en) * | 2016-01-28 | 2019-05-03 | 武汉光庭科技有限公司 | Vehicle-mounted high dynamic-range image synthesis method |
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| CN101064042A (en) * | 2006-04-29 | 2007-10-31 | 昆明钏泽智能系统有限公司 | Vehicle mounted system for monitoring traffic accident |
| CN102538762A (en) * | 2012-01-10 | 2012-07-04 | 广州科易光电技术有限公司 | Online inspection device of high-speed railway contact network and inspection method of online inspection device as well as high-speed rail contact network detection system formed by online inspection device |
| CN104442924B (en) * | 2014-11-05 | 2017-02-01 | 杭州中车车辆有限公司 | All-weather high speed railway vehicle-mounted obstacle detection system and method |
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Address after: 450000 63 Duan street, hi tech Industrial Development Zone, Zhengzhou, Henan Patentee after: Henan blue letter Technology Co., Ltd. Address before: 450000 Cui bamboo street, Zhengzhou hi tech Zone, Henan Province, No. 6 Patentee before: Henan Lan Xin Science and Technology Co., Ltd. |