CN110766830A - Panoramic imaging-based security access control system and control method - Google Patents

Panoramic imaging-based security access control system and control method Download PDF

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Publication number
CN110766830A
CN110766830A CN201910907679.5A CN201910907679A CN110766830A CN 110766830 A CN110766830 A CN 110766830A CN 201910907679 A CN201910907679 A CN 201910907679A CN 110766830 A CN110766830 A CN 110766830A
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CN
China
Prior art keywords
panoramic
display
imaging
end controller
camera
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Pending
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CN201910907679.5A
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Chinese (zh)
Inventor
侯猛
李东晓
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Chongqing Terminus Technology Co Ltd
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Chongqing Terminus Technology Co Ltd
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Priority to CN201910907679.5A priority Critical patent/CN110766830A/en
Publication of CN110766830A publication Critical patent/CN110766830A/en
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    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00571Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00896Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
    • G07C9/00904Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses for hotels, motels, office buildings or the like
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00944Details of construction or manufacture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/61Control of cameras or camera modules based on recognised objects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/66Remote control of cameras or camera parts, e.g. by remote control devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/698Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80Camera processing pipelines; Components thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment
    • H04N5/262Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/265Mixing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • H04N7/186Video door telephones

Abstract

The invention provides a panoramic imaging-based security entrance guard system and a control method, which relate to the technical field of entrance guard security, and comprise a front-end imaging intercom device and a rear-end display intercom device, wherein the front-end imaging intercom device is provided with a front-end loudspeaker, a calling key, a transparent cover and a front-end controller; the rear-end display talkback device is provided with a display device, a control key, a rear-end loudspeaker, a rear-end controller and an angle sensor; the imaging pictures shot by the camera are spliced into the panoramic imaging picture, so that the whole body and surrounding conditions of the visitor can be reflected, compared with the traditional access control system, the view finding range is wider, more images of the visitor can be seen, and more information of the visitor can be acquired; the device is convenient for old people and other people who are not good at touch operation to use, the pictures move downwards when the rear-end device rotates downwards, the pictures move leftwards when the device rotates leftwards, and the operation is more convenient and visual.

Description

Panoramic imaging-based security access control system and control method
Technical Field
The invention relates to the technical field of entrance guard security, in particular to a security entrance guard system based on panoramic imaging and a control method.
Background
The video security access control system is generally installed at the positions of community gates, residential building unit doors, company unit main doors and the like, so that the visual communication between visitors and owners is realized, the identities and purposes of the visitors can be conveniently judged by the owners, and whether the visitors are opened or not is further determined.
The existing video security access control system has the defect that the view range of video imaging is narrow, and generally only forward pictures of the head and a part of the upper body of a visitor can be shot and displayed, so that the current video security access control system is not beneficial to a proprietor to accurately obtain information of whether the visitor carries articles, whether the visitor has companions and the like, and is not beneficial to judging the identity and the purpose of the visitor.
Disclosure of Invention
The invention aims to provide a security access control system based on panoramic imaging and a control method, which aim to solve the technical problem that a video security access control system in the prior art has a narrow viewing range of video imaging; the technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a security entrance guard system based on panoramic imaging, which comprises a front-end imaging intercom device and a rear-end display intercom device which are connected through a network or a circuit,
the front-end imaging intercom device is provided with a front-end loudspeaker, a calling key, a transparent cover and a front-end controller, a camera and a tripod head mechanism are arranged in the transparent cover, the front-end controller controls the tripod head mechanism to drive the camera to rotate on a horizontal plane and a vertical plane so as to adjust a viewing range, an image splicing module is further arranged in the front-end controller, and the image splicing module splices images in the viewing range into panoramic images and sends the panoramic images to the rear-end display intercom device through the front-end controller;
the rear-end display talkback device is provided with a display device, a control key, a rear-end loudspeaker, a rear-end controller and an angle sensor; the rear-end display intercom device is hung on the wall body through the spherical hinge mechanism and rotates around the spherical hinge mechanism; the angle sensor is used for measuring the rotation inclination angle of the rear-end display intercom device and transmitting the measurement data to the rear-end controller, and the rear-end controller adjusts the display area of the panoramic picture on the display device according to the measurement data.
The working principle of the intrinsic safety anti-access control system is as follows:
when a person visits, the front-end controller drives the camera to carry out panoramic shooting on the front part by driving the pan-tilt mechanism, and carries out panoramic processing on the shot pictures through the image splicing module to synthesize panoramic pictures, and then transmits the panoramic pictures to the rear-end controller; when the owner wants to observe the peripheral images, because the rear-end display intercom device is installed on the wall through the spherical hinge mechanism, the adjustment can be carried out up, down, left and right, and simultaneously, the display area of the display device is correspondingly changed along with the angle change of the rear-end display intercom device, for example, when the owner rotates left, the display area in the display device also moves to the left side of the panoramic image so as to observe the image information which is right in front of the camera and is inclined to the left side;
the imaging pictures shot by the camera are spliced into the panoramic imaging picture, so that the whole body and surrounding conditions of the visitor can be reflected, compared with the traditional access control system, the view finding range is wider, more images of the visitor can be seen, and more information of the visitor can be acquired; because the frame of the panoramic imaging picture formed after splicing is larger, and the display area of the display screen at the rear end is generally smaller, if the whole panoramic imaging picture is completely displayed on the display screen, the face of a person in the panoramic imaging picture can not be clearly seen, so that the invention only displays a part of the picture on the display screen at the rear end although the panoramic imaging picture is spliced at the front end, and simultaneously adopts a mode of adjusting the angle of the rear end device to switch the display part of the panoramic picture, thereby being convenient for the old and other people who are not good for touch operation to use, moving the picture downwards when the rear end device is rotated downwards, moving the picture leftwards when the device is rotated leftwards, and being more convenient and intuitive to operate.
Optionally, the pan/tilt/zoom mechanism includes a first mount, a second mount, a first pivot, a first motor, a second pivot, and a second motor, where the first motor and the second motor are both connected to the front controller, the first motor drives the first mount to rotate on the horizontal plane around the first pivot under the driving of the front controller, and the second motor drives the second mount to rotate on the vertical plane around the second pivot under the driving of the front controller. Through the pan-tilt mechanism, the camera can shoot a plurality of imaging pictures at different angles, so that a panoramic picture can be conveniently synthesized at the later stage.
Optionally, the first motor drives the first mounting seat to rotate on the horizontal plane within an angle range of 0 ° to 180 °, and the second motor drives the second mounting seat to rotate on the vertical plane within an angle range of 0 ° to 90 °. The holder mechanism can drive the pocket camera to rotate in a range close to 180 degrees on a horizontal plane so as to adjust the horizontal viewing range of imaging; and the holder mechanism can drive the pocket camera to rotate up and down in a certain angle range on a vertical plane, for example, the angle is from-45 degrees to +45 degrees, so as to adjust the up and down view-finding range of the imaging.
Optionally, a distance detection module for measuring the distance between the external object and the camera is arranged on the camera, the distance detection module is connected with the front-end controller and is preset with a threshold distance, and when the distance between the external object and the camera is smaller than the threshold distance, the front-end controller drives the pan-tilt mechanism to drive the camera to perform panoramic shooting; and when the distance between the external object and the camera is greater than the threshold distance, the front-end controller does not drive or stops driving. As a starting mode of the camera, when a visitor approaches the camera, the camera can be started, the set threshold distance is determined according to the actual situation, the situation that the distance passed by passers is smaller than the threshold distance is avoided, the mode can shoot the visitor in advance, the situation that pictures are delayed in the calling process of an owner is reduced, and the used distance detection module can select infrared distance measurement sensor equipment.
Optionally, the call key is connected with the front-end controller and controls the driving pan-tilt mechanism to drive the camera to perform panoramic shooting. When a visitor presses a call key to request for conversation, the holder mechanism and the camera are started at the same time, and panoramic shooting is carried out on the front.
Optionally, the ball hinge mechanism comprises a ball seat, a ball rod and a ball head, the ball seat is connected with the wall body, a ball bowl used for clamping the ball head is arranged on the ball seat, the ball head is arranged at one end of the ball rod and inserted into the ball bowl, the other end of the ball rod is connected with the rear-end display intercom device, a fastening snap ring used for clamping the ball head is arranged in the ball bowl, and the angle sensor is arranged at the joint of the rear-end display intercom device and the ball rod. The rear end shows intercom when rotating, the club uses the bulb as axle central point, at the bowl internal rotation, and can carry out from top to bottom all-round rotation, in the accommodation process, the fastening snap ring in the bowl can keep the fastening effect to the bulb, only under the condition that has certain external force, rear end shows intercom and bulb just can rotate, only exist under the gravity condition that the intercom self was shown at the rear end, the bulb does not rotate under the clamping effect of fastening snap ring, wherein press from both sides the elastic rubber ring that the snap ring can be for meeting with the bulb interference.
Optionally, the angle sensor is any one or a combination of a three-axis gyroscope and a gravity sensor; the control keys comprise a door opening key and a hang-up key, and the display device is a color display screen. The triaxial gyroscope can simultaneously determine the position of 6 directions, move the orbit and accelerate, because the application field of gyroscope is more extensive, wherein can select the MEMS gyroscope, the MEMS gyroscope is a triaxial gyroscope, can show that the three direction of Coriolis power that produces is down shifted to X, Y, Z when the intercom device carries out rotary motion at the rear end, utilize this principle alright measure the motion direction of the intercom device of rear end display, and the front end controller then converts relevant sensory data into the digital format that the rear end controller can discern.
A control method of a security access control system based on panoramic imaging comprises the following steps:
s1: the front-end imaging intercom device drives the camera to rotate up and down and left and right through the holder mechanism, carries out panoramic shooting on external objects, and produces panoramic picture data packets through the splicing of a front-end controller, and transmits the panoramic picture data packets to the rear-end display intercom device;
s2: the back end display talkback device analyzes the panoramic picture data packet and displays a partial area of the panoramic picture on the display device, along with the rotation of the back end display talkback device by an owner, the angle sensor measures the rotation inclination angle of the back end display talkback device and transmits the measurement data to the back end controller, the back end controller adjusts the display area of the panoramic picture on the display device according to the measurement data, and the visual angle of the display area relative to the panoramic picture corresponds to the observation visual angle of the back end display talkback device after the rotation.
Optionally, in step S1, the image stitching module of the front-end controller stitches to generate panoramic pictures with the same size.
Optionally, in step S2, the back-end controller presets an angle comparison interval, each comparison value in the angle comparison interval corresponds to one display area of the panoramic image, and the back-end controller receives the measurement data of the angle sensor to generate an angle value and matches the angle value with the comparison value, so as to select the display area of the panoramic image on the display device.
The invention provides a security access control system and a control method based on panoramic imaging, which have the beneficial effects that:
(1) the imaging pictures shot by the camera are spliced into the panoramic imaging picture, so that the whole body and surrounding conditions of the visitor can be reflected, compared with the traditional access control system, the view finding range is wider, more images of the visitor can be seen, and more information of the visitor can be acquired;
(2) a part of the panoramic picture is displayed on the display screen at the rear end, and the spliced panoramic picture has a large frame size, but the display area of the display screen at the rear end is generally not necessarily large when the panoramic picture is used as an access control application, so that the display area occupied by each part of the picture is small when the panoramic picture is directly and completely displayed on the display screen at the rear end, the visibility is poor, and the face of a visitor cannot be well distinguished; therefore, only a part of the panoramic picture is displayed on the display screen, so that the visibility is enhanced, and the panoramic picture is easier to distinguish; meanwhile, the display part of the panoramic picture is switched by adjusting the angle of the rear-end device, so that the panoramic picture is convenient for the old and other people who are not good at touch operation to use, the picture moves downwards when the rear-end device rotates downwards, and the picture moves leftwards when the rear-end device rotates leftwards, so that the operation is more convenient and visual.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a schematic diagram of the front-end imaging intercom system of the present invention;
FIG. 3 is a schematic view of another configuration of the front-end imaging intercom device of the present invention;
FIG. 4 is a top plan view of the front-end imaging intercom of the present invention;
FIG. 5 is a schematic view of the construction of the pan and tilt head mechanism and camera of the present invention;
FIG. 6 is a schematic structural diagram of the rear-end display intercom device of the present invention;
FIG. 7 is a schematic structural view of the rear-end display intercom device of the present invention after being respectively turned upwards and downwards;
FIG. 8 is a schematic structural view of the rear end display intercom device and the spherical hinge mechanism of the present invention;
FIG. 9 is a schematic block diagram of the control and sensing components of the present invention;
fig. 10 is a control flow chart of the system control method of the present invention.
In the figure, 1-front imaging intercom, 2-rear display intercom, 3-front speaker, 4-call button, 5-transparent cover, 6-front controller, 7-camera, 8-pan-tilt mechanism, 9-image mosaic module, 10-display device, 11-control key, 12-rear speaker, 13-rear controller, 14-angle sensor, 15-first mounting base, 16-second mounting base, 17-first pivot, 18-first motor, 19-second pivot, 20-second motor, 21-distance detection module, 22-ball base, 23-ball bar, 24-ball head, 25-ball bowl, 26-fastening snap ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As an alternative to the above-described embodiment,
example 1:
as shown in fig. 1-9, a security access control system based on panoramic imaging includes a front-end imaging intercom device 1 and a rear-end display intercom device 2 connected through a network or a circuit, a front-end speaker 3, a call button 4, a transparent cover 5 and a front-end controller 6 are arranged on the front-end imaging intercom device 1, a camera 7 and a pan-tilt mechanism 8 are arranged in the transparent cover 5, the pan-tilt mechanism 8 is controlled by the front-end controller 6 to drive the camera 7 to rotate on a horizontal plane and a vertical plane so as to adjust a viewing range, an image splicing module 9 is further arranged in the front-end controller 6, and the image splicing module 9 splices images in the viewing range into panoramic images and sends the panoramic images to the rear-end display intercom device 2 through the front-end controller 6; the rear-end display intercom device 2 is provided with a display device 10, a control key 11, a rear-end loudspeaker 12, a rear-end controller 13 and an angle sensor 14; the rear-end display intercom device 2 is hung on a wall body through a spherical hinge mechanism and rotates around the spherical hinge mechanism; the angle sensor 14 is used for measuring the rotation inclination angle of the rear-end display intercom device 2 and transmitting the measurement data to the rear-end controller 13, and the rear-end controller 13 adjusts the display area of the panoramic picture on the display device 10 according to the measurement data.
The working principle of the intrinsic safety anti-access control system is as follows:
when a person visits, the front-end controller 6 drives the camera 7 to carry out panoramic shooting on the front side by driving the pan-tilt mechanism 8, carries out panoramic processing on the shot pictures through the image splicing module 9 to synthesize panoramic pictures, and then transmits the panoramic pictures to the rear-end controller 13; at this time, a part of the area of the panoramic picture is displayed on the display device 10, preferably the image part when the camera 7 is right in front, when the owner wishes to observe the peripheral image, because the rear-end display intercom device 2 is installed on the wall through the spherical hinge mechanism, the up-down left-right adjustment can be carried out, at the same time of the adjustment, the display area of the display device 10 is correspondingly changed along with the angle change of the rear-end display intercom device 2, for example, when the owner rotates left, the display area in the display device 10 also moves to the left side of the panoramic picture, so as to observe the image information which is right in front of the camera 7 and is on the left side;
it should be noted that the transparent cover 5 is preferably a semicircular or hemispherical cover protruding out of the front panel, so as to protect the camera 7 and facilitate the camera 7 to take images of the upper, lower, left and right sides; the camera 7 preferentially selects the pocket camera 7, so that the occupied space is small and the concealment is good; the front end loudspeaker 3 and the rear end loudspeaker 12 are used for communication between visitors and owners, the calling key 4 is used for calling the owners and carrying out voice prompt through the rear end loudspeaker 12, and the control key 11 is used for receiving, hanging up, unlocking and other operations.
Example 2:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 1 and 5, the pan/tilt head mechanism 8 includes a first mounting seat 15, a second mounting seat 16, a first pivot 17, a first motor 18, a second pivot 19, and a second motor 20, where the first motor 18 and the second motor 20 are both connected to the front end controller 6, the first motor 18 drives the first mounting seat 15 to rotate on a horizontal plane around the first pivot 17 under the driving of the front end controller 6, and the second motor 20 drives the second mounting seat 16 to rotate on a vertical plane around the second pivot 19 under the driving of the front end controller 6. Through the pan-tilt mechanism 8, the camera 7 can shoot a plurality of imaging pictures at different angles, so that a panoramic picture can be conveniently synthesized at the later stage; the first motor 18 drives the first mounting seat 15 to rotate on the horizontal plane within an angle range of 0-180 degrees, the second motor 20 drives the second mounting seat 16 to rotate on the vertical plane within an angle range of 0-90 degrees, that is, the pan-tilt mechanism 8 can drive the pocket camera 7 to rotate on the horizontal plane within a range of approximately 180 degrees so as to adjust the horizontal viewing range of the imaging; and the holder mechanism 8 can drive the pocket camera 7 to rotate up and down in a certain angle range on a vertical plane, for example, the angle is-45 degrees to +45 degrees, so as to adjust the up and down view-finding range of imaging, and the object and the environment in front of the camera can be completely shot in the normal range.
Example 3:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 1 and 9, a distance detection module 21 for measuring a distance between an external object and the camera 7 is arranged on the camera 7, the distance detection module 21 is connected with the front-end controller 6 and is preset with a threshold distance, and when the distance between the external object and the camera 7 is smaller than the threshold distance, the front-end controller 6 drives the pan-tilt mechanism 8 to drive the camera 7 to perform panoramic shooting; when the distance of the external object from the camera 7 is greater than the threshold distance, the front-end controller 6 does not drive or stops driving. As a starting method of the camera 7, when a visitor approaches the camera 7, the camera 7 is started, the set threshold distance is determined according to the actual situation, and the situation that the distance that passerby passes by is smaller than the threshold distance is avoided.
Example 4:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 9, the call button 4 is connected to the front-end controller 6 and controls the driving pan-tilt mechanism 8 to drive the camera 7 to perform panoramic shooting. When a visitor presses the call key 4 to request a call, the holder mechanism 8 and the camera 7 are simultaneously started to carry out panoramic shooting on the front, and the starting mode can avoid the situation that passers-by may start the camera 7 to shoot when adopting a distance detection mode.
Example 5:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 1 and 8, the ball hinge mechanism includes a ball seat 22, a ball rod 23 and a ball head 24, the ball seat 22 is connected with a wall, a ball bowl 25 for clamping the ball head 24 is arranged on the ball seat 22, the ball head 24 is arranged at one end of the ball rod 23 and inserted into the ball bowl 25, the other end of the ball rod 23 is connected with the rear-end display intercom device 2, a fastening snap ring 26 for clamping the ball head 24 is arranged in the ball bowl 25, and the angle sensor 14 is arranged at the connection position of the rear-end display intercom device 2 and the ball rod 23. Rear end display intercom 2 is when rotating, club 23 uses bulb 24 as axle central point, at ball bowl 25 internal rotation, and can carry out the rotation of all-round about from top to bottom, in the adjustment process, fastening snap ring 26 in the ball bowl 25 can keep the fastening effect to bulb 24, only under the condition that has certain external force, rear end display intercom 2 and bulb 24 just can rotate, only under the gravity condition that only exists rear end display intercom 2 self, bulb 24 does not rotate under the clamping effect of fastening snap ring 26, wherein the clamping snap ring can be for the elastic rubber ring that meets with bulb 24 interference.
Example 6:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 1-9, the angle sensor 14 may be any one of a three-axis gyroscope, a gravity sensor, or a combination thereof; the control keys 11 comprise a door opening key and a hang-up key, and the display device 10 is a color display screen. The position of 6 directions can be surveyed simultaneously to the triaxial gyroscope, the movement track with accelerate, because the application field of gyroscope is more extensive, wherein can select the MEMS gyroscope, the MEMS gyroscope is a triaxial gyroscope, can show that three directions of X, Y, Z take place the displacement under the Coriolis effect that produces when intercom 2 carries out rotary motion at the rear end, utilize this principle alright measure the motion direction of intercom 2 of rear end display, and front end controller 6 then converts relevant sensory data into the digital format that rear end controller 13 can discern.
Example 7:
a control method of a security access control system based on panoramic imaging is shown in figure 10 and comprises the following steps:
s1: the front-end imaging intercom device 1 drives a camera 7 to rotate up, down, left and right through a holder mechanism 8, carries out panoramic shooting on an external object, and produces panoramic picture data packets through splicing of a front-end controller 6, and transmits the panoramic picture data packets to the rear-end display intercom device 2;
s2: the rear-end display intercom device 2 analyzes the panoramic picture data packet and displays a partial area of the panoramic picture on the display device 10, as the owner rotates the rear-end display intercom device 2, the angle sensor 14 measures the rotation inclination angle of the rear-end display intercom device 2 and transmits the measurement data to the rear-end controller 13, the rear-end controller 13 adjusts the display area of the panoramic picture on the display device 10 according to the measurement data, and the viewing angle of the display area relative to the panoramic picture corresponds to the viewing angle of the rear-end display intercom device 2 after rotation.
Example 8:
on the basis of the above-mentioned embodiments, as a further preferable solution: as shown in fig. 10, the image stitching module 9 of the front-end controller 6 stitches to generate panoramic pictures with the same size; the rear-end controller 13 is preset with an angle comparison interval, each comparison value in the angle comparison interval corresponds to one display area of the panoramic picture, and the rear-end controller 13 receives the measurement data of the angle sensor 14 to generate an angle value and matches the angle value with the comparison value, so as to select the display area of the panoramic picture on the display device 10.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A security entrance guard system based on panoramic imaging comprises a front-end imaging intercom device (1) and a rear-end display intercom device (2) which are connected through a network or a circuit, and is characterized in that,
the front-end imaging intercom device (1) is provided with a front-end loudspeaker (3), a calling key (4), a transparent cover (5) and a front-end controller (6), a camera (7) and a pan-tilt mechanism (8) are arranged in the transparent cover (5), the front-end controller (6) controls the pan-tilt mechanism (8) to drive the camera (7) to rotate on a horizontal plane and a vertical plane so as to adjust a view finding range, an image splicing module (9) is further arranged in the front-end controller (6), and the image splicing module (9) splices images in the view finding range into panoramic images and sends the panoramic images to the rear-end display intercom device (2) through the front-end controller (6);
the rear-end display intercom device (2) is provided with a display device (10), a control key (11), a rear-end loudspeaker (12), a rear-end controller (13) and an angle sensor (14); the rear-end display intercom device (2) is hung on the wall body through a spherical hinge mechanism and rotates around the spherical hinge mechanism; the angle sensor (14) is used for measuring the rotation inclination angle of the rear-end display intercom device (2) and transmitting the measurement data to the rear-end controller (13), and the rear-end controller (13) adjusts the display area of the panoramic picture on the display device (10) according to the measurement data.
2. The security entrance guard system based on panoramic imaging is characterized in that the holder mechanism (8) comprises a first mounting seat (15), a second mounting seat (16), a first pivot (17), a first motor (18), a second pivot (19) and a second motor (20), the first motor (18) and the second motor (20) are connected with the front end controller (6), the first motor (18) drives the first mounting seat (15) to rotate on the horizontal plane around the first pivot (17) under the driving of the front end controller (6), and the second motor (20) drives the second mounting seat (16) to rotate on the vertical plane around the second pivot (19) under the driving of the front end controller (6).
3. The panoramic imaging based security entrance guard system according to claim 2, wherein the first motor (18) drives the first mounting seat (15) to rotate on the horizontal plane within an angle range of 0-180 °, and the second motor (20) drives the second mounting seat (16) to rotate on the vertical plane within an angle range of 0-90 °.
4. The security access control system based on panoramic imaging is characterized in that a distance detection module (21) used for measuring the distance between an external object and the camera (7) is arranged on the camera (7), the distance detection module (21) is connected with the front-end controller (6) and is preset with a threshold distance, and when the distance between the external object and the camera (7) is smaller than the threshold distance, the front-end controller (6) drives the pan-tilt mechanism (8) to drive the camera (7) to perform panoramic shooting; when the distance between the external object and the camera (7) is larger than the threshold distance, the front-end controller (6) does not drive or stops driving.
5. The security entrance guard system based on panoramic imaging is characterized in that the calling key (4) is connected with the front-end controller (6) and controls the driving holder mechanism (8) to drive the camera (7) to perform panoramic shooting.
6. The security entrance guard system based on panoramic imaging is characterized in that the spherical hinge mechanism comprises a ball seat (22), a ball rod (23) and a ball head (24), the ball seat (22) is connected with a wall, a ball bowl (25) used for clamping the ball head (24) is arranged on the ball seat (22), the ball head (24) is arranged at one end of the ball rod (23) and inserted into the ball bowl (25), the other end of the ball rod (23) is connected with a rear-end display intercom device (2), a fastening snap ring (26) used for clamping the ball head (24) is arranged in the ball bowl (25), and the angle sensor (14) is arranged at the joint of the rear-end display intercom device (2) and the ball rod (23).
7. The panoramic imaging based security entrance guard system according to claim 4 or 5, wherein the angle sensor (14) adopts any one or a combination of a three-axis gyroscope and a gravity sensor; the control keys (11) comprise a door opening key and a hang-up key, and the display device (10) is a color display screen.
8. A control method of a security entrance guard system based on panoramic imaging is characterized by comprising the following steps:
s1: the front-end imaging intercom device (1) drives a camera (7) to rotate up, down, left and right through a holder mechanism (8), carries out panoramic shooting on an external object, and splices the data packets to produce panoramic pictures through a front-end controller (6) and transmits the data packets to the rear-end display intercom device (2);
s2: the rear-end display intercom device (2) analyzes the panoramic picture data packet and displays a partial area of the panoramic picture on the display device (10), the rear-end display intercom device (2) rotates along with an owner, the angle sensor (14) measures the rotation inclination angle of the rear-end display intercom device (2) and transmits the measurement data to the rear-end controller (13), the rear-end controller (13) adjusts the display area of the panoramic picture on the display device (10) according to the measurement data, and the visual angle of the display area relative to the panoramic picture corresponds to the observation visual angle of the rear-end display intercom device (2) after rotation.
9. The control method of the security entrance guard system based on the panoramic imaging as claimed in claim 8, wherein in step S1, the image stitching module (9) of the front-end controller (6) stitches to generate panoramic pictures with the same size.
10. The control method of the security access control system based on the panoramic imaging according to claim 9, wherein in step S2, an angle comparison interval is preset in the back-end controller (13), each comparison value in the angle comparison interval corresponds to a display area of the panoramic image, and the back-end controller (13) receives the measurement data of the angle sensor (14) to generate an angle value and matches the angle value with the comparison value, so as to select the display area of the panoramic image on the display device.
CN201910907679.5A 2019-09-24 2019-09-24 Panoramic imaging-based security access control system and control method Pending CN110766830A (en)

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