CN203698304U - Visual information acquisition system for train - Google Patents
Visual information acquisition system for train Download PDFInfo
- Publication number
- CN203698304U CN203698304U CN201320779444.0U CN201320779444U CN203698304U CN 203698304 U CN203698304 U CN 203698304U CN 201320779444 U CN201320779444 U CN 201320779444U CN 203698304 U CN203698304 U CN 203698304U
- Authority
- CN
- China
- Prior art keywords
- train
- area array
- array cameras
- visual information
- line source
- 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.)
- Expired - Lifetime
Links
- 230000000007 visual effect Effects 0.000 title claims abstract description 65
- 238000003384 imaging method Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000005286 illumination Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
- B61L27/57—Trackside diagnosis or maintenance, e.g. software upgrades for vehicles or vehicle trains, e.g. trackside supervision of train conditions
Abstract
The embodiment of the utility model discloses a visual information acquisition system for a train, and the visual information acquisition system is used for acquiring visual information of a train visual structure and comprises one or more line light sources and one or more area-array cameras, wherein a light beam formed by irradiation of the line light source is positioned in an imaging region of the area-array camera; the area-array camera is positioned outside a plane where the line light source and the light beam formed by irradiation of the line light source are positioned; an included angle is formed between the imaging direction of the area-array camera and the plane; the area-array camera acquires a train image comprising the visual information of the train visual structure when a train passes. Compared with the prior art, the visual information in the train image, which is acquired by the system, is richer than two-dimensional image information, so that fault analysis of a visual structure of a part is convenient to perform subsequently and the problems generated in the process of detecting the parts in a conventional manual manner are avoided.
Description
Technical field
The application relates to detection technique field, particularly relates to a kind of train visual information and obtains system.
Background technology
Traditional train abnormality detection mode is mainly that staff rule of thumb investigates, at least there is following shortcoming in this mode: 1, train composition complex structure, tiny parts are more, especially motor train unit train, its general length has more than 200 meter, from skirtboard to bogie truck and pars intermedia bottom only one, bolt just have 1000 multinomially, therefore adopt manual detection mode to have inefficiency and easy undetected problem; 2, increased the difficulty of manual detection due to following factor, further reduced work efficiency and further increased undetected probability: the hidden number of components of train is more; The more difficult normal condition form of remembeing each parts of upkeep operation personnel; In addition, after warehouse-in, the interior outer rim of its wheel, tread, wheel rim, because rail and bogie structure blocks, exist vision dead zone.3, for train, its operation principal feature is: one stands erectly reaches, the dwell time is short and long routing operation, and these features cause it to be overhauled with manual type midway.
Have problems in order to solve traditional manual detection mode, existing train failure detection system arranges multiple train detection points along the line at track, each train detection point arranges multiple image collecting devices, image collecting device is arranged on track below and/or track side, for the image of train bottom and/or sidepiece is gathered, then the image processing system that is arranged on rear utilizes communication line to transfer the image that image collecting device collects, image processing is carried out in the train bottom collecting and/or the image of sidepiece, to complete the fault detection to train.
By to prior art research, applicant finds: what existing train failure detection system acquired is all two dimensional image conventionally, for train bottom and sidepiece labyrinth, two dimensional image has been lost many important visual information features, so only cannot accurately detect the parts state of train according to two dimensional image.
Utility model content
In the embodiment of the present application, provide a kind of train visual information to obtain system, obtained train X-Y scheme and cannot accurately detect the problem of Train Parts state to solve prior art.
In order to solve the problems of the technologies described above, the embodiment of the present application discloses following technical scheme:
A kind of train visual information is obtained system, for obtaining the visual information of train visual structure, comprising:
At least one line source and at least one area array cameras, wherein,
The light beam that described line source irradiation forms is positioned at the imaging region of described area array cameras;
Described area array cameras is positioned at described line source and described line source irradiates outside the plane at the light beam place forming, and between the imaging direction of described area array cameras and described plane, be provided with angle, described area array cameras train by time obtain the train image of the visual information that includes train visual structure.
Preferably, on described area array cameras, be provided with the narrow band pass filter for filtering sunshine.
Preferably, further comprise: for the mounting bracket of described line source and area array cameras is installed;
Be arranged on mounting bracket, for adjusting the angle regulator of angle between the imaging direction of described area array cameras and described plane.
Preferably, further comprise:
At least one is connected with described line source and area array cameras, for detection of train by least one position transduser of signal,
Described line source or area array cameras are subject to train to be triggered and opened or close by signal.
Preferably, further comprise:
For detection of at least one speed sensor of train speed signal,
Be connected with described speed sensor, for according to the arithmetic and logic unit in the moment of taking pictures of area array cameras described in described train speed calculated signals;
Input end is connected with described arithmetic and logic unit, and mouth is connected with described area array cameras, generates the impulse singla generative circuit of the pulse control signal of controlling described area array cameras work for the moment of taking pictures described in basis.
Preferably, the mouth of described impulse singla generative circuit is connected with described line source, and described line source is subject to the control of described pulse control signal open or close.
Preferably, further comprise:
Store the position memory of spatial relation between described line source and described area array cameras;
Be connected with described position memory, for according to described spatial relation, described train image being processed, obtain the image processor of the visual information of train visual structure;
Be connected with described image processor, for described visual information is analyzed, the position of the visual structure fault of output train and the visual information analysis treater of type;
Be connected with described visual information analysis treater, for train car image, visual information and the position of visual structure fault and the data memory of type.
From upper technical scheme, this train visual information that the embodiment of the present application provides is obtained system, on the train that the light beam irradiates of line source is passed through in orbit, utilize area array cameras from having the direction collection of angle to be irradiated to the image of light beam train with line source Lighting direction, can obtain the train image of the visual information of the visual structure that comprises train.Compared with prior art, it is abundanter than two-dimensional image information that this device obtains visual information in train image, and then conveniently analyze in the fault of the follow-up visual structure to parts, avoids occurring that Traditional Man mode detects the problem existing to parts.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The train visual information that Fig. 1 provides for the embodiment of the present application is obtained a kind of structural representation of system;
The area array cameras that Fig. 2 provides for the embodiment of the present application and the scheme of installation of line source;
The train visual information that Fig. 3 provides for the embodiment of the present application is obtained the another kind of structural representation of system;
The train visual information that Fig. 4 provides for the embodiment of the present application is obtained another structural representation of system;
The train visual information that Fig. 5 provides for the embodiment of the present application is obtained another structural representation of system.
Detailed description of the invention
In order to make those skilled in the art person understand better the technical scheme in the embodiment of the present application, and the above-mentioned purpose of the embodiment of the present application, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, technical scheme in the embodiment of the present application is described in further detail.
A kind of train visual information that Fig. 1 provides for the embodiment of the present application is obtained the structural representation of system.
As shown in Figure 1, in figure, 1 is train surface to be detected, and the surperficial element size of train is different with position as we can see from the figure, thereby makes train surface elevation inconsistent.This train visual information is obtained system and is comprised: line source 3 and area array cameras 2.
As shown in Figure 1, line source 3 forms linear light beam 4 in train surface irradiation to be detected, in line source 3 positions, and sees along the direction of illumination of line source 3, and linear light beam 4 is straight line.Between the direction of illumination of the imaging direction of area array cameras 2 and line source 3, there is certain angle, and the linear light beam 4 of line source 3 irradiation formation is positioned at the imaging region of area array cameras 2.In the embodiment of the present application, for convenience of description, line source 3 and the plane at linear light beam 4 places are called to light irradiation face.
Due on train surface on 1 element size different with position, so and light irradiation face between have in the direction of certain angle and observe, will see the tortuous shape changing along with train surface parts height that is shaped as of linear beam 4.In the embodiment of the present application, line source 3 can adopt LASER Light Source.
As shown in Figure 1, area array cameras 2 is positioned at outside above-mentioned light irradiation face, and is provided with angle between the imaging direction of area array cameras 2 and light irradiation face, between the imaging direction of area array cameras 2 and the direction of illumination of line source 3, has angle.Therefore,, when area array cameras 2 collects after image, the shape of the linear beam 4 in image will the tortuous variation along with train surface parts height.For fear of sunshine, the imaging of area array cameras 2 is caused to interference in addition, on area array cameras 2, can also be provided with narrow band pass filter, the effect of narrow band pass filter is filtering sunshine, and linear beam 4 can be clearly presented on train image.
In actual applications, line source 3 can also be set to direction of illumination and train surface to be detected perpendicular, and angle between the imaging direction of area array cameras 2 and train surface is acute angle.But in any case line source 3 and area array cameras are set, all must ensure to be provided with angle between the imaging direction of area array cameras 2 and light irradiation face.
As shown in Figure 2, line source 3 can be arranged on the first mounting bracket 5, and light irradiation face and paper that line source 3 forms are perpendicular, area array cameras 2 can be arranged on the second mounting bracket 6, as seen from the figure, between the direction of illumination of area array cameras 2 and light irradiation face, be provided with angle, the size of angle, can carry out free adjustment according to distance between on-the-spot area array cameras 2, line source 3 and train.In other embodiment of the application, as long as ensure area array cameras 2 and line source 3 relativeness between the two, the two can also be installed on same support.
Arrange from above-mentioned, in the time that train passes through, the linear beam that line source 3 forms is radiated on train surface, area array cameras 2 is positioned at outside the light irradiation face of line source 3, because train surface element size is different with position, so in the face system of battle formations picture collecting at area array cameras 2, linear beam 4 by be one with the light beam of the meander-shaped of parts height correlation.
This train visual information is obtained system in the time of work, area array cameras 2 and line source 3 can be held open state constantly, with ensure get train by time train image, but consider the problem such as service life and power consumption of area array cameras 2 and line source 3, need control surface array camera 2 and line source 3 only at train by just opening.
For this reason, in another embodiment of the application, as shown in Figure 3, this system can also comprise: at least one position transduser 7, position transduser 7 can be arranged on the front of train direction to the car area array cameras 2 and line source 3, with the signal that detection type car passes through in advance.
At least one position transduser 7 sends at least one in area array cameras 2, line source 3 by the train detecting by signal, Fig. 7 Position Sensor 7 is all connected with area array cameras 2 and line source 3, is subject to train opened or closed by the triggering of signal with at least one in control surface array camera 2, line source 3.
Therefore, this system can improve the service life of area array cameras 2 and line source 3 greatly, and reduces the power consumption of obtaining in train image.
In addition, in order to control more accurately the working process of area array cameras 2 and line source 3, as shown in Figure 4, this system can also comprise: speed sensor 11, arithmetic and logic unit 12 and impulse singla generative circuit 13, wherein,
Speed sensor 11 is for detection of class vehicle speed signal.In the embodiment of the present application, speed sensor 11 can, for being arranged on detection magnet steel or the magnet steel group on track, in addition, can also be to be arranged on the ultrasonic velocity measurement instrument on track side etc.;
Arithmetic and logic unit 12 is connected with speed sensor 11, and for according to the taking pictures the moment of area array cameras described in described train speed calculated signals, arithmetic and logic unit 12 can micro controller system or other chip;
The input end of impulse singla generative circuit 13 is connected with described arithmetic and logic unit 12, and mouth is connected with described area array cameras 2, generates to control the pulse control signal that described area array cameras 2 is worked for the moment of taking pictures described in basis.
In addition, the mouth of impulse singla generative circuit 13 can also be connected with line source 3, and line source 3 can be subject to the control of pulse control signal to open or close equally.
By above-mentioned setting, the laser that can make line source at work can stroboscopic, and while only having area array cameras work, laser is just lit, so both can make the time of lighting in the laser in laser and other train detection systems in this system stagger, reduce and other train system in interference between laser, can reduce again the power consumption of laser, extend its service life.Therefore, this system can realize according to train and carry out work by the accurate control surface array camera 2 of signal and line source 3.
In other embodiment of the application, as shown in Figure 5, this system can also comprise: position memory 21, image processor 22, visual information analysis treater 23 and data memory 24, wherein,
In position memory 21, store spatial relation between described line source and described area array cameras;
Image processor 22 is connected with described position memory 21, for according to described spatial relation, described train image being processed, obtains train visual information;
Visual information analysis treater 23 is connected with described image processor 22, for described visual information is analyzed, and position and the type of the visual structure fault of output train;
Data memory 24 is connected with described visual information analysis treater 23, for position and the type of train car image, visual information and visual structure fault.
From upper technical scheme, this train visual information that the embodiment of the present application provides is obtained system, on the train that the light beam irradiates of line source is passed through in orbit, utilize area array cameras from having the direction collection of angle to be irradiated to the image of light beam train with line source Lighting direction, can obtain the train image of the visual information of the visual structure that comprises train.Compared with prior art, it is abundanter than two-dimensional image information that this device obtains visual information in train image, and then conveniently analyze in the fault of the follow-up visual structure to parts, avoids occurring that Traditional Man mode detects the problem existing to parts.
A kind of train visual information above the application being provided is obtained system and is described in detail, applied principle and the embodiment of specific case to the application herein and set forth, the explanation of above embodiment is just for helping to understand the application's method and core concept thereof; , for one of ordinary skill in the art, according to the application's thought, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application meanwhile.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
It should be noted that, in this article, such as " being greater than " or " exceeding " or " higher than " or " being less than " or " lower than " etc. relationship description, all can be understood as " be greater than and be not equal to " or " be less than and be not equal to ", also can be understood as " being more than or equal to " or " being less than or equal to ", and not necessarily require or imply a kind of situation restriction or intrinsic that is necessary for.
In addition, in this article, relational terms such as " first " and " second " etc. is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
It should be noted that, the above is only a part of preferred embodiment of present techniques scheme, make those skilled in the art can fully understand or realize the application, instead of whole embodiment, General Principle as defined herein can, in the case of not departing from the application's spirit or scope, realize in other embodiments.Therefore; based on above embodiment; for those skilled in the art; do not depart from the application's principle, do not making under creative work prerequisite, can also make multiple apparent amendment and retouching; the every other embodiment obtaining by these amendments and retouching; can be applied to present techniques scheme, the realization that these do not affect the application, all should belong to the application's protection domain.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. train visual information is obtained a system, it is characterized in that, for obtaining the visual information of train visual structure, comprising:
At least one line source and at least one area array cameras, wherein,
The light beam that described line source irradiation forms is positioned at the imaging region of described area array cameras;
Described area array cameras is positioned at described line source and described line source irradiates outside the plane at the light beam place forming, and between the imaging direction of described area array cameras and described plane, be provided with angle, described area array cameras train by time obtain the train image of the visual information that includes train visual structure.
2. system according to claim 1, is characterized in that, is provided with the narrow band pass filter for filtering sunshine on described area array cameras.
3. system according to claim 1 and 2, is characterized in that, further comprises: for the mounting bracket of described line source and area array cameras is installed;
Be arranged on mounting bracket, for adjusting the angle regulator of angle between the imaging direction of described area array cameras and described plane.
4. system according to claim 3, is characterized in that, further comprises:
At least one is connected with described line source and area array cameras, for detection of train by least one position transduser of signal,
Described line source or area array cameras are subject to train to be triggered and opened or close by signal.
5. system according to claim 3, is characterized in that, further comprises:
For detection of at least one speed sensor of train speed signal,
Be connected with described speed sensor, for according to the arithmetic and logic unit in the moment of taking pictures of area array cameras described in described train speed calculated signals;
Input end is connected with described arithmetic and logic unit, and mouth is connected with described area array cameras, generates the impulse singla generative circuit of the pulse control signal of controlling described area array cameras work for the moment of taking pictures described in basis.
6. system according to claim 5, is characterized in that,
The mouth of described impulse singla generative circuit is connected with described line source, and described line source is subject to the control of described pulse control signal open or close.
7. according to the system described in claim 4 or 6, it is characterized in that, further comprise:
Store the position memory of spatial relation between described line source and described area array cameras;
Be connected with described position memory, for according to described spatial relation, described train image being processed, obtain the image processor of the visual information of train visual structure;
Be connected with described image processor, for described visual information is analyzed, the position of the visual structure fault of output train and the visual information analysis treater of type;
Be connected with described visual information analysis treater, for train car image, visual information and the position of visual structure fault and the data memory of type.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320779444.0U CN203698304U (en) | 2013-12-02 | 2013-12-02 | Visual information acquisition system for train |
| PCT/CN2014/070343 WO2015081620A1 (en) | 2013-12-02 | 2014-01-09 | Train visual information acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320779444.0U CN203698304U (en) | 2013-12-02 | 2013-12-02 | Visual information acquisition system for train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203698304U true CN203698304U (en) | 2014-07-09 |
Family
ID=51048784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320779444.0U Expired - Lifetime CN203698304U (en) | 2013-12-02 | 2013-12-02 | Visual information acquisition system for train |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203698304U (en) |
| WO (1) | WO2015081620A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567725A (en) * | 2014-12-17 | 2015-04-29 | 苏州华兴致远电子科技有限公司 | Vehicle operation fault detection system and method |
| CN104567726A (en) * | 2014-12-17 | 2015-04-29 | 苏州华兴致远电子科技有限公司 | Vehicle operation fault detection system and method |
| WO2016095490A1 (en) * | 2014-12-17 | 2016-06-23 | 苏州华兴致远电子科技有限公司 | Vehicle operation fault detection system and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198559A (en) * | 2016-08-31 | 2016-12-07 | 成都铁安科技有限责任公司 | A kind of dynamic detection system of roof of train image |
| CN113415309A (en) * | 2021-06-16 | 2021-09-21 | 西安交通大学 | Vehicle-mounted steel rail disease monitoring device based on visual analysis and working method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3609863A1 (en) * | 1985-08-12 | 1987-02-19 | Hegenscheidt Gmbh Wilhelm | Method and device for measuring the wheel profile of a railway wheel |
| ES2208055B1 (en) * | 2002-02-25 | 2005-09-16 | Patentes Talgo, S.A. | MEASURING DEVICE FOR BEARING AND TURNING PARAMETERS BY ARTIFICIAL VISION FOR WHEELS OF RAILWAY VEHICLES. |
| CN102788803B (en) * | 2012-07-09 | 2014-08-20 | 南京航空航天大学 | On-line high-speed detection system of train wheel set tread and wheel rim and detection method thereof |
| CN202952978U (en) * | 2012-11-06 | 2013-05-29 | 苏州华兴致远电子科技有限公司 | Train part information collector |
-
2013
- 2013-12-02 CN CN201320779444.0U patent/CN203698304U/en not_active Expired - Lifetime
-
2014
- 2014-01-09 WO PCT/CN2014/070343 patent/WO2015081620A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567725A (en) * | 2014-12-17 | 2015-04-29 | 苏州华兴致远电子科技有限公司 | Vehicle operation fault detection system and method |
| CN104567726A (en) * | 2014-12-17 | 2015-04-29 | 苏州华兴致远电子科技有限公司 | Vehicle operation fault detection system and method |
| WO2016095490A1 (en) * | 2014-12-17 | 2016-06-23 | 苏州华兴致远电子科技有限公司 | Vehicle operation fault detection system and method |
| CN104567726B (en) * | 2014-12-17 | 2017-12-08 | 苏州华兴致远电子科技有限公司 | Vehicle operation troubles detecting system and method |
| KR101927648B1 (en) * | 2014-12-17 | 2018-12-10 | 쑤저우 뉴 비전 사이언스 앤드 테크놀러지 컴퍼니 리미티드 | Vehicle operation fault detection system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015081620A1 (en) | 2015-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203698304U (en) | Visual information acquisition system for train | |
| CN101915672B (en) | Testing device and testing method of lane departure warning system | |
| JP6281492B2 (en) | Passenger counting device, method and program | |
| CN103162639B (en) | Method, device and system for obtaining vehicle three-dimensional outline | |
| CN102507600B (en) | Automatic abrasion detection device for pantograph pan of high-speed locomotive | |
| CN202793389U (en) | On-line routing inspection device for high-speed rail overhead line system | |
| CN207335877U (en) | A kind of vehicle-mounted bow net condition monitoring system | |
| CN105930787A (en) | Vehicle door opening early-warning method | |
| CN105548197A (en) | Non-contact steel rail surface flaw inspection method and device | |
| CN103835212A (en) | Three-dimensional road surface detecting system | |
| CN105423924B (en) | The On-line Measuring Method and system of sound barrier | |
| CN105185160A (en) | Pavement detection system and detection method | |
| CN107274678B (en) | A kind of night vehicle flowrate and model recognizing method based on Kinect | |
| CN110097591A (en) | The detection method of bow net state | |
| CN203246465U (en) | Driving recorder with lane departure warning and front space warning functions | |
| CN102887155A (en) | Freight train transfinite computer vision inspection system | |
| CN103955980A (en) | Human body model feature based bus passenger flow statistic device and processing method | |
| CN202304997U (en) | Non-parking quick monitoring system of road axle load scale | |
| CN104330036A (en) | Vehicle external contour automatic detection system | |
| CN201812368U (en) | Testing device for lane departure warning system | |
| CN103149603A (en) | Road weather detection method based on video | |
| CN203534527U (en) | Train component size information detection system | |
| CN104228874A (en) | Rail vehicle exterior outline noncontact detection system | |
| CN105807084A (en) | Track geometric parameter detection synchronization and calculation method | |
| CN202830720U (en) | Automatic driving pavement defect detecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |