CN219162753U

CN219162753U - Face recognition access control system

Info

Publication number: CN219162753U
Application number: CN202223248961.3U
Authority: CN
Inventors: 农鉴
Original assignee: Guangxi Zhongke Zhilian Information Technology Co ltd
Current assignee: Guangxi Zhongke Zhilian Information Technology Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-06-09
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a face recognition access control system, which comprises a hollow box and a recognition unit; hollow box: the front side surface of the hollow box is provided with a left-right symmetrical vertical sliding port, and the left lower end of the front side surface of the hollow box is provided with a loudspeaker; an identification unit: the lifting device comprises round bars, lifting tables, rotating pins and cameras, wherein the round bars are symmetrically connected in a sliding mode in a vertical sliding mode in pairs, the front ends of the four round bars are fixedly connected with the lifting tables, the rotating pins are rotatably connected in cavities at the upper ends of the lifting tables through bearings, and the cameras are arranged at the upper ends of the rotating pins; wherein: the front side surface of the hollow box is provided with a PLC (programmable logic controller), the input end of the PLC is electrically connected with an external power supply, the camera is electrically connected with the PLC in a bidirectional manner, and the input end of the loudspeaker is electrically connected with the output end of the PLC; this face identification access control system can carry out automatically regulated to self discernment angle or height, and then carries out facial recognition to the personnel of different positions or different heights, and application scope is wider.

Description

Face recognition access control system

Technical Field

The utility model relates to the technical field of face recognition, in particular to a face recognition access control system.

Background

Face recognition is a biological recognition technology for carrying out identity recognition based on facial feature information of people. A series of related technologies, commonly referred to as image recognition and face recognition, are used to capture images or video streams containing faces with a camera or cameras, and automatically detect and track the faces in the images, thereby performing face recognition on the detected faces.

When the face recognition technology is applied to an access control system, whether a person has traffic qualification is generally judged according to the face information of the person, so that the access control adjusting device can adjust the opening and closing states of the access control according to the judging result.

The existing face recognition access control system generally adopts a camera shooting recording mode to detect face information of a person, at the moment, the person is often required to automatically adjust the station position of the person so as to be opposite to the camera, the alignment effect is difficult to ensure, and if the camera fails to align with the face of the person in the recognition process, the accuracy of recognition work is easily affected.

Disclosure of Invention

The utility model aims to overcome the existing defects, provides the face recognition access control system, can automatically adjust the recognition angle or the recognition height of the access control system, further can perform face recognition on people with different positions or different heights, has a wider application range, and can effectively solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the face recognition access control system comprises a hollow box and a recognition unit;

hollow box: the front side surface of the hollow box is provided with a left-right symmetrical vertical sliding port, and the left lower end of the front side surface of the hollow box is provided with a loudspeaker;

an identification unit: the lifting device comprises round bars, lifting tables, rotating pins and cameras, wherein the round bars are symmetrically connected in a sliding mode in a vertical sliding mode in pairs, the front ends of the four round bars are fixedly connected with the lifting tables, the rotating pins are rotatably connected in cavities at the upper ends of the lifting tables through bearings, and the cameras are arranged at the upper ends of the rotating pins;

wherein: the front side of hollow box is equipped with the PLC controller, and the external power source is connected to the input electricity of PLC controller, and the camera is connected with the two-way electricity of PLC controller, and the output of PLC controller is connected to the input electricity of speaker, can carry out automatically regulated to self discernment angle or height, and then carries out facial discernment to the personnel of different positions or different heights, and application scope is wider.

Further, the identification unit still includes frame plate, first motor and lead screw, the frame plate sets up between two round bars that transversely correspond, and first motor sets up in the inside roof center department of hollow box, and the output shaft bottom of first motor is equipped with the lead screw, and the bottom of lead screw is rotated with the inside bottom surface of hollow box through the bearing and is connected, and the screw at two frame plate middle parts all is connected with lead screw threaded connection, and the output of PLC controller can be changed to the input electricity of first motor, can change the locating height of camera to carry out facial recognition to different height personnel.

Further, the middle part of the outer surface of the lifting platform is provided with evenly distributed proximity sensors, and the output ends of the proximity sensors are electrically connected with the input end of the PLC controller, so that whether a person approaches can be judged.

Further, the fixed cover of extrados of rotation round pin is equipped with the awl ring, and the rear side inner wall of elevating platform upper end cavity is equipped with the second motor, and the output shaft front end of second motor is equipped with bevel gear, and bevel gear and awl ring meshing are connected, and the output of PLC controller can be adjusted to the angle that the place of camera is connected to the input electricity of second motor for the camera can aim at the personnel face that is in different angles, promotes the degree of accuracy of discernment work.

Further, the inside bottom surface of elevating platform upper end cavity is equipped with angle sensor, and the bottom and the count pivot fixed connection at angle sensor middle part of rotation round pin, angle sensor's output electricity is connected the input of PLC controller, can carry out real-time supervision to the angle that the camera was located.

Further, the rear side inner wall of hollow box is equipped with bilateral symmetry's guide way, all is connected with the leading wheel through the round pin axle rotation in the breach of round bar rear end, and the leading wheel is located adjacent guide way inside, can provide further guide supporting role for the elevating platform, guarantees the stability when the elevating platform removes.

Further, the rear side of hollow box is equipped with the mounting panel, and the four corners symmetry of mounting panel is equipped with the mounting hole, can realize the installation fixed to hollow box, ensures operational environment's stability.

Compared with the prior art, the utility model has the beneficial effects that: the face recognition access control system has the following advantages:

1. in the use, when the personnel is close to hollow box, proximity sensor can in time respond to and with the information feedback to the PLC controller that the personnel is close to, shoot the record and with this data feedback to the PLC controller to the face that is close to the personnel through the regulation and control camera work of PLC controller, and the PLC controller discerns the image information that the camera was shot and compares the face information that enters in advance in with self database and then can judge that the personnel that is close to has the traffic qualification and switching entrance guard, simple structure is practical.

2. In the recognition process, through the regulation and control of the PLC controller, when the first motor operation drives the lead screw to rotate, the influence of the threaded connection relation of the frame plate and the lead screw is achieved, the frame plate can drive the round rod and the lifting platform to vertically displace along the vertical sliding port together, so that the height of the camera is changed, face recognition is conducted on personnel with different heights, the guide wheel and the guide groove are matched with each other in the process, further guide supporting effect is provided for the lifting platform, stability in moving of the lifting platform is guaranteed, when the second motor operation drives the bevel gear to rotate, the influence of the meshing connection relation of the bevel gear and the bevel gear ring is achieved, the rotation pin and the camera can be enabled to rotate together, the orientation angle of the camera is adjusted, the camera can be aligned with faces of people with different angles, the accuracy of recognition work is improved, and the practicability is good.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the present utility model in an inner cross-section;

FIG. 3 is a schematic view of the right-side view in-plane cross-section structure of the present utility model;

fig. 4 is an enlarged schematic view of the structure of the present utility model at a.

In the figure: the device comprises a hollow box 1, a vertical sliding port 2, a recognition unit 3, a round rod 31, a lifting table 32, a rotation pin 33, a camera 34, a frame plate 35, a first motor 36, a screw rod 37, a PLC 4, a proximity sensor 5, a loudspeaker 6, a conical gear 7, a second motor 8, a bevel gear 9, an angle sensor 10, a guide groove 11, a guide wheel 12, a mounting plate 13 and a mounting hole 14.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present embodiment provides a technical solution: the face recognition access control system comprises a hollow box 1 and a recognition unit 3;

hollow box 1: the front side of the box is provided with a left-right symmetrical vertical sliding port 2, the left lower end of the front side of the hollow box 1 is provided with a loudspeaker 6, and in the identification process, the loudspeaker 6 can send out corresponding prompt tones according to the identification progress to provide indication for approaching people;

the identification unit 3: comprises round bars 31, a lifting table 32, a rotating pin 33 and a camera 34, wherein the round bars 31 are symmetrically connected in a sliding manner in pairs in the vertical sliding port 2, the front ends of the four round bars 31 are fixedly connected with the lifting table 32, the rotating pin 33 is rotatably connected in a concave cavity at the upper end of the lifting table 32 through a bearing, the camera 34 is arranged at the upper end of the rotating pin 33, the identification unit 3 further comprises a frame plate 35, a first motor 36 and a screw rod 37, the frame plate 35 is arranged between the two round bars 31 which transversely correspond, the first motor 36 is arranged at the center of the inner top wall of the hollow box 1, the screw rod 37 is arranged at the bottom end of an output shaft of the first motor 36, the bottom end of the screw rod 37 is rotatably connected with the inner bottom surface of the hollow box 1 through a bearing, screw holes in the middle of the two frame plates 35 are in threaded connection with the screw rod 37, the input end of the first motor 36 is electrically connected with the output end of the PLC 4, the camera 34 works to shoot and record the face of the person close to the camera and feed the data back to the PLC 4, the PLC 4 can judge whether the person close to the camera has passing qualification after recognizing the image information shot by the camera 34 and comparing the image information with face information recorded in a database of the camera in advance, so as to realize face recognition work, in addition, in the recognition process, the first motor 36 works to drive the screw rod 37 to rotate under the influence of the threaded connection relation of the frame plate 35 and the screw rod 37, the frame plate 35 can drive the round rod 31 and the lifting table 32 to vertically displace along the vertical sliding port 2 together, so that the height of the camera 34 is changed, and the face recognition of persons with different heights can be conveniently realized;

wherein: the front side of the hollow box 1 is provided with a PLC controller 4, the input end of the PLC controller 4 is electrically connected with an external power supply, the camera 34 is electrically connected with the PLC controller 4 in a bidirectional manner, and the input end of the loudspeaker 6 is electrically connected with the output end of the PLC controller 4.

Wherein: the surface middle part of elevating platform 32 is equipped with evenly distributed's proximity sensor 5, and the input of PLC controller 4 is connected to proximity sensor 5's output electricity, and when the personnel was close to hollow box 1, proximity sensor 5 can in time respond and feed back the information that the personnel was close to PLC controller 4.

Wherein: the fixed cover of extrados of round pin 33 is equipped with awl ring 7, the rear side inner wall of elevating platform 32 upper end cavity is equipped with second motor 8, the output shaft front end of second motor 8 is equipped with bevel gear 9, bevel gear 9 and awl ring 7 meshing are connected, the output of PLC controller 4 is connected to the input electricity of second motor 8, when the operation of second motor 8 drives bevel gear 9 and rotate, receive bevel gear 9 and awl ring 7's meshing relation of connection influence, can make round pin 33 and camera 34 take place to rotate together, and then adjust the orientation angle of camera 34, make the camera 34 can aim at the personnel face that is in different angles, promote the degree of accuracy of discernment work.

Wherein: the inside bottom surface of elevating platform 32 upper end cavity is equipped with angle sensor 10, and the bottom and the count pivot fixed connection at angle sensor 10 middle part of rotation round pin 33, and angle sensor 10's output electricity is connected the input of PLC controller 4, and angle sensor 10 can carry out real-time supervision to the angle that camera 34 is located.

Wherein: the rear side inner wall of hollow box 1 is equipped with bilateral symmetry's guide way 11, all is connected with leading wheel 12 through the round pin axle rotation in the breach of round bar 31 rear end, and leading wheel 12 is located adjacent guide way 11 inside, and leading wheel 12 and guide way 11 cooperate can provide further guide support effect for elevating platform 32, guarantees the stability when elevating platform 32 removes.

Wherein: the rear side of the hollow box 1 is provided with a mounting plate 13, four corners of the mounting plate 13 are symmetrically provided with mounting holes 14, personnel use external bolts to penetrate through the mounting holes 14 to connect the mounting plate 13 with external mounting parts, so that the hollow box 1 is mounted and fixed, and the stability of a working environment is ensured.

The utility model provides a face recognition access control system, which has the following working principle: the personnel uses the outside bolt to pass mounting hole 14 and link to each other mounting panel 13 and outside installation position, realize the installation fixed to hollow box 1, ensure operational environment's stability, in the subsequent use, when the personnel is close to hollow box 1, proximity sensor 5 can in time respond to and feed back the information that the personnel is close to PLC controller 4, regulate and control camera 34 work through PLC controller 4 is to shooting record and with this data feedback to PLC controller 4 near personnel's face, PLC controller 4 discerns the image information that camera 34 was shot and with the face appearance information comparison back of entering in advance in the self database, can judge near personnel possesses the passing qualification, in order to realize face identification work, in addition, in the recognition process, through the regulation and control of PLC controller 4, when first motor 36 operation drive lead screw 37 is rotatory, by the threaded connection relation influence of frame plate 35 and lead screw 37, frame plate 35 can drive round bar 31 and elevating platform 32 together take place vertical displacement along vertical sliding port 2, thereby change the locating height of head 34, so that carry out facial recognition to different personnel, this face recognition wheel 12 can be judged in advance with the face appearance information comparison with the face appearance information of own database, can judge whether the face information is close to personnel's face quality, in order to realize the rotation angle of bevel gear 32, in order to rotate the same time, the angle of rotation 9 can be guaranteed to the bevel gear is moved with the guide groove 9 when the 9 is contacted with elevating platform, and the rotational angle is moved to the 9, can be moved to the bevel gear is moved to the 9 when the angle is contacted with the 9 is guaranteed, and can be rotated with the 9.

It should be noted that, in the above embodiment, the PLC controller 4 is selected from a SMART-700-IE-V3 controller, the camera 34 is selected from an X3221-C hemispherical camera, the first motor 36 is selected from a GNB2118A motor, the proximity sensor 5 is selected from a DK-11N type proximity sensor, the speaker 6 is selected from a 24mm high-tone speaker, the second motor 8 is selected from a 24BYJ48 motor, the angle sensor 10 is selected from a RION-HDA536T high-precision dynamic tilt sensor, and the PLC controller 4 controls the camera 34, the first motor 36, the proximity sensor 5, the speaker 6, the second motor 8 and the angle sensor 10 to operate by methods commonly used in the prior art.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. Face identification access control system, its characterized in that: comprises a hollow box (1) and an identification unit (3);

hollow box (1): the front side surface of the hollow box is provided with a left-right symmetrical vertical sliding port (2), and the left lower end of the front side surface of the hollow box (1) is provided with a loudspeaker (6);

identification unit (3): the lifting device comprises round bars (31), lifting tables (32), rotating pins (33) and cameras (34), wherein the round bars (31) are symmetrically connected in a sliding mode in a group from top to bottom in the vertical sliding port (2), the front ends of the four round bars (31) are fixedly connected with the lifting tables (32), the rotating pins (33) are rotatably connected in cavities at the upper ends of the lifting tables (32) through bearings, and the cameras (34) are arranged at the upper ends of the rotating pins (33);

wherein: the front side of hollow box (1) is equipped with PLC controller (4), and the input electricity of PLC controller (4) is connected external power source, and camera (34) are connected with the two-way electricity of PLC controller (4), and the output of PLC controller (4) is connected to the input electricity of speaker (6).

2. The face recognition access control system of claim 1, wherein: the identification unit (3) further comprises a frame plate (35), a first motor (36) and a screw rod (37), the frame plate (35) is arranged between two round rods (31) which transversely correspond to each other, the first motor (36) is arranged at the center of the inner top wall of the hollow box (1), the screw rod (37) is arranged at the bottom end of an output shaft of the first motor (36), the bottom end of the screw rod (37) is rotatably connected with the inner bottom surface of the hollow box (1) through a bearing, screw holes in the middle of the two frame plates (35) are in threaded connection with the screw rod (37), and the input end of the first motor (36) is electrically connected with the output end of the PLC (4).

3. The face recognition access control system of claim 1, wherein: and the middle part of the outer surface of the lifting table (32) is provided with proximity sensors (5) which are uniformly distributed, and the output end of each proximity sensor (5) is electrically connected with the input end of the PLC (4).

4. The face recognition access control system of claim 1, wherein: the fixed cover of extrados of round pin (33) is equipped with awl ring gear (7), and the rear side inner wall of elevating platform (32) upper end cavity is equipped with second motor (8), and the output shaft front end of second motor (8) is equipped with bevel gear (9), and bevel gear (9) are connected with awl ring gear (7) meshing, and the output of PLC controller (4) is connected to the input electricity of second motor (8).

5. The face recognition access control system of claim 1, wherein: the bottom surface of the inner part of the concave cavity at the upper end of the lifting table (32) is provided with an angle sensor (10), the bottom end of the rotating pin (33) is fixedly connected with a counting rotating shaft at the middle part of the angle sensor (10), and the output end of the angle sensor (10) is electrically connected with the input end of the PLC (4).

6. The face recognition access control system of claim 1, wherein: the rear side inner wall of the hollow box (1) is provided with bilaterally symmetrical guide grooves (11), guide wheels (12) are connected in gaps at the rear end of the round rod (31) through pin shafts in a rotating mode, and the guide wheels (12) are located inside the adjacent guide grooves (11).

7. The face recognition access control system of claim 1, wherein: the rear side of the hollow box (1) is provided with a mounting plate (13), and four corners of the mounting plate (13) are symmetrically provided with mounting holes (14).