• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This automatic barrier makes it possible to control the access of vehicles to an area. It comprises a shaft (10), an obstacle (12) movably mounted on the shaft (10) between a closed position and an open position, and an optical reader (16) for the automatic reading of number plates of vehicles presented to the vehicle. fence. The optical reader (16) being mounted in the barrel (10).
    公开号:FR3013741A1
    申请号:FR1361721
    申请日:2013-11-27
    公开日:2015-05-29
    发明作者:Jacques Jouannais
    申请人:SURVISION；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the field of vehicular access control systems intended to control the access of vehicles to an area such as a public or private car park, a public or private site, or a road.
    [0002] It is possible to control the access of vehicles to a zone by means of an automatic barrier whose opening is controlled by means of a card or a badge presented by the driver of the vehicle presenting himself. the barrier or installed on the vehicle. Nevertheless, this requires providing the users with badges, which represents a cost. In addition, it is not possible to automatically detect the use of the same badge by several users. One of the aims of the invention is to provide an automatic access control barrier which is efficient and easy to implement at a lower cost. For this purpose, the invention proposes an automatic barrier for controlling the access of vehicles to a zone, the barrier comprising a shaft, an obstacle mounted to move on the shaft between a closed position and an open position, and an optical reader for automatic reading of license plates of vehicles presented at the barrier, the optical reader being mounted in the barrel. According to particular embodiments, the barrier comprises one or more of the following characteristics, taken individually or in any technically possible combination: the optical reader is arranged in the barrel so as to aim in a direction making, in a view from above, an angle between 25 ° and 65 ° with the direction of a traffic lane controlled by the barrier; the optical reader is embedded in the drum; the optical reader is flush with an external surface of the barrel or is recessed towards the inside of the barrel with respect to an external surface of the barrel; the optical reader comprises a camera and a reading module for automatic reading of number plates on the images taken by the camera, by digital processing; the optical reader comprises an aberration corrector for correcting aberrations of the images taken by the camera prior to their reading; the optical reader comprises a lighting device synchronized with the camera for illuminating a shooting area, preferably with infrared light; - The optical reader is configured to control the opening and closing of the obstacle according to the result of reading; - The optical reader includes a database listing mineralogy plates allowing the opening of the barrier. The invention also relates to a set of automatic number plate reader comprising an optical reader having a camera having a shooting axis and a computer for automatically reading license plates on images taken by the camera. photograph, and a fixing support for fixing the optical reader on a wall provided with a window, in particular a lateral face of a vehicle access control barrier shaft, the fixing support comprising a cover provided to close the window and carry the optical reader so that it is disposed on one side of the wall and takes images on the other side through the window, the axis of view being inclined with respect to a normal to the plane of the window. The invention also relates to an optical reader having a camera having a shooting axis and a computer for automatically reading license plates of vehicles on images taken by the camera, configured to be mounted on an automatic barrier of access control of vehicles to a zone. The invention and its advantages will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which: FIG. 1 is a schematic view from above of an automatic access control barrier; - Figure 2 is a side view of the barrier; - Figure 3 is a sectional view along III-III in Figure 2 of the barrier; and - Figure 4 is a block diagram of the barrier. As illustrated in FIGS. 1 and 2, the automatic barrier 2 is arranged across a traffic lane 4 for the circulation of motor vehicles. The front part of a vehicle 6 is illustrated in Figures 1 and 2. The vehicle 6 carries at its front end a mineralogy plate 8 on which are written characters, in particular alphanumeric characters. The driving lane 4 extends along a lane A axis. The lane 4 is for example an access or exit lane of a public or private car park, an access or exit lane of a public or private site with reserved access, or an access or exit lane of a road, for example a reserved access road or a paying highway.
    [0003] The barrier 2 controls the passage of the vehicles in the traffic lane 4. The barrier 2 comprises a fixed shaft 10, an obstacle 12 mounted to move on the shaft 10 between an open position and a closed position, and a drive device 14 for move the obstacle 12 between a closed position and an open position.
    [0004] The barrier 2 comprises an optical reader 16 configured for the automatic reading of license plates and the control of the drive device 14 according to a reading result. The shaft 10 is fixed to the ground, on an edge of the taxiway 4, so as not to impede the passage of vehicles. The shaft 10 is erected vertically along a shaft V (Figure 2). The shaft 10 has a side wall or side face 10A facing the circulation path 4. The side face 10A is substantially flat. The side face 10A and substantially parallel to the track direction A. The obstacle 12 is movable relative to the shaft 10 between a closed position (Figure 1 and Figure 2 in solid lines) to prevent the passage of vehicles, and an open position (Figure 2 in dotted lines), to allow the passage of vehicles. In the closed position, the obstacle 12 extends across the traffic lane 4. In the open position, the obstacle 12 is clear of the lane 4 to allow the passage of vehicles. In the example illustrated, the barrier 2 is rising. The obstacle 12 is pivotally mounted on the shaft 10 about a pivot axis B which is horizontal. The pivot axis B is parallel to the track direction A. In the closed position, the obstacle 12 extends horizontally cantilevered from the shaft 10, across the traffic lane 4. In the open position, obstacle 12 is raised (Figure 2). In the example shown, the obstacle 12 is formed by a straight bar or smooth 20.
    [0005] In the raised position, the rail 20 extends substantially vertically. Alternatively, the obstacle 12 is formed by an articulated arm adapted to rise up by folding so as to limit the vertical grip of the beam in the open position. In a variant, the barrier 2 is pivotable: the obstacle 12 is pivotally mounted on the shaft 10 about a vertical axis. In the closed position, the obstacle 12 extends horizontally across the traffic lane 4, and in the open position, the obstacle 12 extends horizontally substantially parallel to the lane direction A. The obstacle 12 is pivotally mounted on the shaft 10 near an upper end of the shaft 10. The drive device 14 is motorized. It comprises a motor 22, preferably electric, coupled to the obstacle 12 to move the obstacle 12 between the open position and the closed position.
    [0006] The optical reader 16 is configured for the automatic reading of number plates of vehicles presented at the barrier 2. The optical reader 16 is able to take images of the vehicles presented at the barrier and to digitally process each image taken in order to identify the presence of a license plate and to read the characters of a license plate present on the image, by optical character recognition. The optical reader 16 is mounted on the shank 10. The optical reader 16 is fixed on the shank 10 so as to be stationary with respect to the shank 10. The optical reader 16 is fixed on the shank 10 at a height less than that of the shank 10. connection between the obstacle 12 and the barrel 10.
    [0007] The optical reader 16 is embedded in the drum 10 so that the optical reader 16 is entirely contained inside the drum 10. The optical reader 16 is here embedded in the side face 10A of the drum 10 facing the taxiway 4 As illustrated in FIGS. 3 and 4, the optical reader 16 comprises a digital camera 22. Each digital image taken by the camera 22 is in the form of a matrix of pixels. The camera 22 has a digital sensor, for example of the known type CCD or CMOS. The camera 22 is preferably a digital camera. The camera 22 is oriented so that, when viewed from above (FIG. 1), its shooting axis X is inclined with respect to the channel direction A, while being directed upstream or towards downstream of the barrier 2 considering the direction of passage of the vehicles. The camera 22 is oriented so that its axis of view makes an angle of between 25 and 65 ° with the track direction, preferably an angle of about 45 °. The camera 22 is oriented so that its axis of view X is substantially horizontal. The axis of view X is located in a plane perpendicular to the axis of the shaft V. The camera 22 has a focal length adapted to the very short distance separating the barrier 2 of the vehicles. These characteristics make it possible to take exploitable images for the automatic reading of license plates, especially in view of the distance of the camera 22 to the vehicles presented at the barrier 2, and the dimensions of the field of vision necessary to take images on which the number plates of vehicles of various sizes and / or positioned differently on the lane 4 are visible.
    [0008] The optical reader 16 comprises a computer 24 for the digital processing of the images taken by the camera 22.
    [0009] The computer 24 includes a correction module 26 for correcting aberrations, and in particular geometric aberrations, of each captured image, in particular those resulting from the very short distance separating the barrier of the vehicles. The correction module 26 is a software component implementing an aberration correction algorithm. The correction module 26 is executed by the computer 24. Given the position of the camera 22, offset with respect to the lane 4, the angle between the axis of view X and a vehicle presenting at the barrier 2 and the focal length used to take into account the proximity of the shooting relative to the desired field of view dimensions, the raw images provided by the camera 22 are susceptible to contain geometric aberrations. The correction module 26 makes it possible to correct at least part of these aberrations. The computer 24 comprises a reading module 28 for reading a license plate possibly present on an image taken by the camera 22. The reading module 28 is a software component. The reading module 28 is executed by the computer 24. The reading module 28 is configured to process an image so as to locate a possible license plate on an image, and to read the localized number plate. The location is performed for example by a mask matching algorithm. The reading is performed for example by optical character recognition. The reading module 28 reads each image taken by the camera 22, possibly corrected by the correction module 26.
    [0010] The computer 24 comprises a control module 30 for receiving the result of reading each image supplied by the reading module 28 and controlling the drive device 14 so as to trigger the opening of the barrier 2 as a function of the result of reading the image. The control module 30 has access to a database 32 listing license plates allowing the opening of the barrier 2 and / or license plates prohibiting the opening of the barrier 2. The database 32 is preferably stored locally. in a memory of the computer 24, for rapid processing of the images. Preferably, the optical reader 16 is connected to a remote computer or a remote computer server via a network or a data transmission link, for the remote setting of the barrier 2, especially for the implementation remote from the database. The optical reader 16 comprises a lighting device 34 for systematically illuminating the vehicles presented at the barrier and to make the system operating completely independently of ambient light conditions. The lighting device 34 is configured to illuminate the shooting area with a light in the non-visible range, preferably in the infrared range, which avoids dazzling the driver of the vehicle. The camera 22 is chosen to allow reading with this type of lighting.
    [0011] The lighting device 34 illuminates the shooting area by pulse so as to reduce the energy consumption and to ensure the non-dangerous eye of the lighting device. The lighting device 34 is controlled by a synchronization module 35 of the computer 24 in synchronism with the camera 22 to turn on during shooting and to turn off between the shots.
    [0012] Preferably, the camera 22 takes black-and-white images under infrared light, provided by the lighting device 34. The optical reader 16 comprises a housing 36 housing the camera 22, the camera. computer 24 and the lighting device 34. The housing 36 is provided with sockets for connecting the optical reader 16 to an electricity supply network and a data communication network. By the choice of compact components, the optical reader 16 has a very small footprint and weight allowing its implantation inside the barrel 10. The side face 10A of the barrel 10 is provided with a window 50 in which is embedded the reader optical 16.
    [0013] The barrier 2 comprises a fixing support 38 (FIG. 3) for fixing the optical reader 16 in the drum 10, on the lateral face 10A. The fixing support 38 comprises a cover 40 designed to close the window 50 and carry the optical reader 16 so that the optical reader 16 is arranged on one side of the window 50 and takes pictures through the window 50, X shooting axis being inclined relative to a normal to the plane of the window 50. The mounting bracket 38 has a peripheral frame 42 surrounding the cover 40. The frame 42 extends in a plane P. The cover 40 extends back from the plane P of the frame 42. The optical reader 16 is fixed on the cover 40 so as to take images through the frame 42, at an angle of view X inclined relative to a normal to the plane P of frame 42.
    [0014] The optical reader 16 is here fixed behind the cover 40 which is provided with openings 48 for imaging, and where appropriate, illumination, through the cover 40. The optical reader 16 is fixed on the cover 40 through its housing 36, for example by screwing or riveting.
    [0015] The cover 40 here comprises two inclined faces 44, 46 extending from opposite edges of the frame 42 away from the plane P and joining at an angle to each other. The optical reader 16 is here fixed behind the inclined face 44 which is provided with openings 48 for shooting and, where appropriate, lighting. The optical reader 16 mounted on the mounting bracket 38 is recessed from the plane P of the frame 42 and has its X-axis passing through the frame 42 at an inclination with respect to a normal to the plane P of the frame 42. The fixing support 38 is fixed via its frame 42 to the edges of the window 50, for example by screwing or riveting. The frame 42 fixed to the edges of the window 50 is coplanar with the window 50.
    [0016] Thus, the optical reader 16 carried by the fixing support 38 fixed on the lateral face 10A facing the window 50 is set back towards the inside of the barrel 10 with respect to the lateral face of the barrel 10 while having its axis X shooting directed through the window 50 and inclined relative to a normal to the plane of the window 50. The mounting bracket 38 defines a single position for the optical reader 16.
    [0017] As soon as the fixing support 38 is fixed on a wall, the optical reader 16 is in a single position determined with respect to this wall. The optical reader 16 is fixed on the drum 10 so as to be stationary. It does not require any adjustment, in particular adjustment of the orientation of the camera 22. The optical reader 16 is fixed in the drum 10 by means of the fixing support 38 without the possibility of adjusting the position The optical reader 16 is thus integrated in the drum 10 so as to make the installation strictly repetitive (without adjustment) whatever the configuration of the site. The installation of the optical reader 16 in the barrel 10 of the barrier 2 ensures a proper position, regardless of the configuration of the site.
    [0018] Access control using mineralogy plates allows reliable and smooth operation, especially for drivers. There is no need to equip drivers or their vehicles with badges or access cards. The access control is carried out on the basis of a vehicle-specific identifier - the license plate - rather than on a card a carrier-specific access badge that can change vehicles.
    [0019] The optical reader 16 integrated in the shaft 10 of the barrier 2 facilitates the implantation of the barrier at an access control point, by limiting in particular the number of elements to be fixed at the access control point and the number of connection between the different elements. The optical reader 16 mounted immobile on the barrier 2, is correctly oriented to read the number plates as soon as the barrier 2 is correctly arranged with respect to the circulation lane 4. This facilitates the implantation of the barrier 2 and makes possible the implementation of access control functions by reading the license plates on sites that could not be equipped until now, because of the difficulty of implantation of the optical reader.
    [0020] The optical reader 16 can easily be added retrospectively (retrofit) on a barrier 2 already installed. The optical reader 16 comprises a set of images (camera 22 and lighting device 34) adapted specifically to the very short shooting distance resulting from the short distance between the barrier 2 and the vehicles to be controlled. presenting the barrier 2. The installation of the optical reader 16 in the drum 10 is made possible in particular by the miniaturization and lightening of the optical reader 16 and secondly by the use of appropriate aberration correction algorithms at the short distance between the optical reader 16 implanted in the drum 10 and the vehicles presented at the barrier.
    权利要求:
    Claims (11)
    [0001]
    CLAIMS1.- Automatic barrier for controlling the access of vehicles to an area, the barrier comprising a shaft (10), an obstacle (12) movably mounted on the shaft (10) between a closed position and an open position, and a reader optical system (16) for the automatic reading of license plates of vehicles presented at the barrier, the optical reader (16) being mounted in the barrel (10).
    [0002]
    2. A barrier according to claim 1, wherein the optical reader (16) is disposed in the barrel (10) so as to aim in a direction which, viewed from above, has an angle of between 25 ° and 65 ° with the direction of a traffic lane controlled by the barrier.
    [0003]
    3. Barrier according to claim 1 or 2, wherein the optical reader (16) is embedded in the barrel (10).
    [0004]
    A barrier as claimed in any one of the preceding claims, wherein the optical reader (16) is flush with an outer surface of the shank (10) or is recessed inwardly of the shank (10) relative to an outer surface of the shank (10). barrel (10).
    [0005]
    5. Barrier according to any one of the preceding claims, wherein the optical reader comprises a camera (22) and a reading module (28) for the automatic reading of number plates on the images taken by the camera. camera (22), by digital processing.
    [0006]
    The barrier of claim 5, wherein the optical reader (16) includes an aberration corrector (26) for correcting aberrations of images taken by the camera (22) prior to playback.
    [0007]
    A barrier as claimed in any one of the preceding claims, wherein the optical reader (16) comprises a lighting device (34) synchronized to the camera (22) for illuminating a shooting area. view, preferably with infrared light.
    [0008]
    A barrier as claimed in any one of the preceding claims wherein the optical reader (16) is configured to control the opening and closing of the obstacle in accordance with the result of the reading.
    [0009]
    9. Barrier according to any one of the preceding claims, wherein the optical reader (16) comprises a database (32) listing mineralogical plates allowing the opening of the barrier (2),
    [0010]
    10. A set of automatic number plate reader comprising an optical reader (16) having a camera (22) having a shooting axis (X) and a computer (24) for automatic plate reading of images taken by the camera (22), and a mounting bracket (38) for fixing the optical reader (16) in the barrel (10) of a vehicle access control barrier on a side face (10A) of the barrel (10) provided with a window (50), the fixing support (38) comprising a cover (40) provided for closing the window (50) and carrying the optical reader (16). ) so that it is arranged on one side of the lateral face (10A) and takes images on the other side through the window (50), the shooting axis (X) being inclined by compared to a normal to the plane of the window (50).
    [0011]
    An optical scanner (16) having a camera (22) having a shooting axis (X) and a computer (24) for automatically reading vehicle license plates on images taken by the camera. camera (22), configured to be mounted in the barrel (10) of an automatic barrier to control access of vehicles to a zone.
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    同族专利:
    公开号 | 公开日
    EP2878733B1|2017-08-16|
    EP2878733A1|2015-06-03|
    FR3013741B1|2016-12-23|
    引用文献:
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    JP2000011297A|1998-06-24|2000-01-14|Teruo Ido|Parking lot gate management system|
    US7504965B1|2005-08-05|2009-03-17|Elsag North America, Llc|Portable covert license plate reader|
    DE202009017623U1|2009-12-29|2010-04-15|Hinn, Karlheinz|Device for opening an access barrier for a vehicle|
    EP2597198A1|2011-11-25|2013-05-29|SkiData AG|Vehicle barrier|CN108265648A|2018-02-08|2018-07-10|穆美艳|Based on internet automobile parking equipment|
    CN111455908A|2020-04-13|2020-07-28|广州市果豆科技有限责任公司|Intelligent barrier gate|
    WO2017072456A1|2015-10-27|2017-05-04|A2C - Pop Up Concept|Device for reserving a parking space and protecting the bodywork of a land vehicle and car park comprising same|
    FR3042799B1|2015-10-27|2017-12-15|A2C - Pop Up Concept|DEVICE FOR RESERVING PARKING SPACE AND PROTECTING THE BODYWORK OF A GROUND VEHICLE|
    CN111127900B|2020-01-17|2020-10-27|上海核工程研究设计院有限公司|Image data processing-based breakthrough monitoring device|
    CN112216012A|2020-11-22|2021-01-12|何锋朝|Intelligent entrance guard device based on thing networking|
    法律状态:
    2015-08-27| PLFP| Fee payment|Year of fee payment: 3 |
    2016-10-14| PLFP| Fee payment|Year of fee payment: 4 |
    2017-09-18| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1361721A|FR3013741B1|2013-11-27|2013-11-27|AUTOMATIC VEHICLE ACCESS CONTROL BARRIER|FR1361721A| FR3013741B1|2013-11-27|2013-11-27|AUTOMATIC VEHICLE ACCESS CONTROL BARRIER|
    EP14191810.2A| EP2878733B1|2013-11-27|2014-11-05|Assembly for automatic reading of registration plates and automatic barrier for vehicle access control|
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