CN111311805A

CN111311805A - Security protection door that face identification precision is high

Info

Publication number: CN111311805A
Application number: CN201811412705.9A
Authority: CN
Inventors: 吴诗辉
Original assignee: Jiangsu Hongyao Electric Light Source Co ltd
Current assignee: Jiangsu Hongyao Electric Light Source Co ltd
Priority date: 2018-11-26
Filing date: 2018-11-26
Publication date: 2020-06-19

Abstract

The invention relates to a security door with high face recognition precision, which comprises a bottom plate, a top cover, a loudspeaker, a processor, a lifting mechanism, a moving plate, a correcting mechanism, a recognition mechanism and two lateral plates, wherein the correcting mechanism comprises a first motor and two correcting components, each correcting component comprises a supporting tube, a first output shaft, a flat plate and a correcting unit, the recognition mechanism comprises a suspender, a direction adjusting component and a recognizer, the recognizer is provided with a display, a direction adjusting plate, a camera, a first distance sensor and two adjusting components, the security door with high face recognition precision corrects the head of a tourist from two sides through the correcting mechanism to prevent the head of the tourist from deflecting from the left and the right when the facial image is shot, and not only does the head of the tourist scan the face contour through the recognition mechanism, and after the pitch angle of the head of the tourist is determined, the camera is adjusted to enable the camera to collect the face image on the front side, so, the safety inspection work is facilitated to be smoothly carried out.

Description

Security protection door that face identification precision is high

Technical Field

The invention relates to the field of face recognition equipment, in particular to a security door with high face recognition precision.

Background

Face recognition is a biometric technology for identity recognition based on facial feature information of a person. A series of related technologies, also commonly called face recognition and face recognition, are used to capture an image or video stream containing a face with a camera or a video camera, automatically detect and track the face in the image, and then perform face recognition on the detected face.

Because face identification has the function of verifying the identity fast, face identification technique is applied to various safety inspection equipment often, if install the camera on the safety inspection door, the safety inspection door can confirm visitor's identity fast like this, need not security check personnel and check the ID card, the safety inspection efficiency has been improved when making things convenient for the safety inspection, but in the practical application process, the camera is when gathering visitor's facial image, because the rigidity of camera, and visitor's action such as turn round easily, low head and new head, the facial image that leads to the camera to gather produces situations such as slope skew, the judgement of equipment has been influenced, and then reduced face identification's precision, lead to current face identification safety inspection door practicality to reduce.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the security door with high face recognition precision is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a security door with high face recognition precision comprises a bottom plate, a top cover, a loudspeaker, a processor, a lifting mechanism, a movable plate, a correction mechanism, a recognition mechanism and two lateral plates, wherein the two lateral plates are fixed above two ends of the bottom plate respectively;

the correcting mechanism comprises a first motor and two correcting components, the first motor is fixed below the moving plate and electrically connected with the PLC, the two correcting components are respectively positioned on two sides of the first motor, the correcting components comprise a supporting tube, a first output shaft, a flat plate and a correcting unit, the supporting tube is fixed below the moving plate, the first motor is in transmission connection with one end of the first output shaft, the other end of the first output shaft is arranged in the supporting tube, the top end of the flat plate is sleeved on the first output shaft, a thread matched with the first output shaft is arranged at the connecting part of the flat plate and the first output shaft, and the correcting unit is arranged at the bottom end of the flat plate;

the identification mechanism comprises a hanging rod, a hanging plate, a direction adjusting component and an identifier, wherein the hanging plate is fixed below the movable plate through the hanging rod, the direction adjusting component is positioned between the identifier and the hanging plate and is in transmission connection with the identifier, the identifier is provided with a display, a direction adjusting plate, a camera, a first distance sensor and two adjusting components, the two adjusting components are respectively positioned on two sides of the display, the adjusting components are in transmission connection with the direction adjusting plate, the camera and the first distance sensor are both fixed on the direction adjusting plate, and the camera and the first distance sensor are both electrically connected with the PLC;

a wireless receiving module is arranged in the processor and comprises a wireless receiving circuit, the wireless receiving circuit comprises a second antenna, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a third inductor, a fourth inductor, a third triode, a first diode, a second diode, a third diode and a third resistor, the second antenna is grounded through a series circuit formed by the seventh capacitor and the third inductor, the series circuit formed by the fifth capacitor and the sixth capacitor is connected with the third inductor in parallel, one end of the fourth inductor is connected with the anode of the first diode, the other end of the fourth inductor is grounded through the eighth capacitor, the base of the third triode is respectively connected with the cathode of the first diode and the cathode of the second triode, the anode of the second triode is grounded, and the emitter of the third triode is connected with the anode of the third diode, the cathode of the third diode is grounded, the collector of the third triode is externally connected with a 5V direct-current voltage power supply through a third resistor, the control circuit comprises an integrated circuit, a fourth resistor, a ninth capacitor, a tenth capacitor, a fourth triode and a buzzer, the model of the integrated circuit is NE555, the fourth end and the eighth end of the integrated circuit are externally connected with the 5V direct-current voltage power supply, the seventh end of the integrated circuit is connected with the sixth end of the integrated circuit, the seventh end of the integrated circuit is externally connected with the 5V direct-current voltage power supply through the fourth resistor, the seventh end of the integrated circuit is grounded through the ninth capacitor, the second end of the integrated circuit is connected with the collector of the third triode, the first end of the integrated circuit is grounded, the fifth end of the integrated circuit is grounded through the tenth capacitor, and the third end of the integrated circuit is connected with the base of the fourth triode, and the emitter of the fourth triode is grounded, and the collector of the fourth triode is externally connected with a 5V direct-current voltage power supply through a buzzer.

Preferably, in order to drive the moving plate to ascend and descend, the ascending and descending mechanism comprises a second motor, a first connecting rod and a second connecting rod, the second motor is fixed below the top cover and electrically connected with the PLC, the second motor is in transmission connection with the first connecting rod, and the first connecting rod is in transmission connection with the moving plate through the second connecting rod.

Preferably, in order to realize the stable movement of the movable plate, the lifting assembly further comprises two limiting assemblies, the two limiting assemblies are respectively located at two ends of the movable plate, each limiting assembly comprises a limiting ring and a limiting rod, the limiting rings are fixed on the movable plate, the top ends and the bottom ends of the limiting rods are respectively fixedly connected with the top cover and the bottom plate, and the limiting rings are sleeved on the limiting rods.

Preferably, in order to make the moving plate close to the top position of the visitor's head, a second distance sensor is arranged below the moving plate, and the distance sensor is electrically connected with the PLC.

Preferably, in order to detect whether a person stands on the bottom plate, a first pressure sensor is arranged in the bottom plate and is electrically connected with the PLC.

Preferably, the correcting unit includes a second pressure sensor fixed to a side of the flat plate adjacent to the first motor, a spring, an acting plate electrically connected to the PLC, and an orientation unit, wherein the acting plate is connected to the second pressure sensor through the spring, in order to detect whether the guest's head is rotated left or right.

Preferably, in order to fix the moving direction of the acting plate, the orientation unit comprises a convex plate and two positioning rods, two ends of the convex plate are respectively fixedly connected with the acting plate through the two positioning rods, and the flat plate is sleeved on the positioning rods.

Preferably, in order to drive the direction-adjusting plate to move, the adjusting assembly comprises a conveyor belt and two driving units, the conveyor belt is fixedly connected with the direction-adjusting plate, the two driving units are respectively located at two ends of the conveyor belt, each driving unit comprises a third motor, a buffer block, a third output shaft and a roller, the third motor and the buffer block are both fixed on the identifier, the third motor is electrically connected with the PLC, the third output shaft is located between the third motor and the buffer block, the third motor is in transmission connection with the third output shaft, and the rollers are sleeved on the third output shaft.

As preferred, in order to adjust the shooting angle of camera, it includes horizon bar, fan, cylinder, piston board and bracing piece to transfer to the subassembly, horizon bar and cylinder are all fixed on the hanger plate, the horizon bar is articulated with the recognizer, the cylinder is located the top of horizon bar, the fan is connected with the PLC electricity, fan and cylinder intercommunication, the top of piston board sets up in the cylinder, the bottom of piston board is passed through the bracing piece and is articulated with the recognizer.

Preferably, in order to realize the stable movement of the flat plate, the correcting mechanism further comprises a sliding frame, the sliding frame is U-shaped, two ends of the sliding frame are fixed below the moving plate, and the flat plate is sleeved on the sliding frame.

The invention has the advantages that the security door with high face recognition precision corrects the head of the tourist from two sides through the correction mechanism, prevents the head of the tourist from deflecting left and right when shooting the face image, compared with the prior correction mechanism, the correction mechanism can adjust the head angle of the tourist, is convenient for the recognizer to be opposite to the face, not only can scan the face contour through the recognition mechanism, and after determining the pitch angle of the head of the tourist, the camera is adjusted, so that the camera collects the face image on the front, thereby improving the face recognition precision, being beneficial to the smooth operation of security inspection, compared with the prior recognition mechanism, the recognition mechanism has flexible structure, can be correspondingly adjusted according to the head angle of the tourist, is convenient for improving the accuracy of face recognition, and in a remote control transmitting circuit, the conventional components are adopted, thereby reducing the production cost while realizing wireless reliable transmission, the market competitiveness of the remote control circuit is improved; moreover, in the remote control receiving circuit, the first diode and the second diode form a voltage doubling circuit to perform voltage doubling rectification on the wireless signal sensed by the fourth power supply, so that the wireless signal is reliably sensed and received, and the reliability of the remote control circuit is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a security door with high face recognition accuracy according to the present invention;

FIG. 2 is a schematic structural diagram of a correction mechanism of a security door with high face recognition accuracy according to the present invention;

FIG. 3 is a schematic structural diagram of an identification mechanism of a security door with high face identification precision according to the present invention;

FIG. 4 is a schematic structural diagram of a direction-adjusting component of a security door with high face recognition accuracy according to the present invention;

FIG. 5 is a schematic circuit diagram of a wireless receiving module of a security door with high face recognition accuracy according to the present invention;

in the figure: 1. a bottom plate, 2, a top cover, 3, a loudspeaker, 4, a processor, 5, a movable plate, 6, a lateral plate, 7, a first motor, 8, a support pipe, 9, a first output shaft, 10, a flat plate, 11, a suspender, 12, a hanger plate, 13, an identifier, 14, a display, 15, a direction adjusting plate, 16, a camera, 17, a first distance sensor, 18, a second motor, 19, a first connecting rod, 20, a second connecting rod, 21, a limiting ring, 22, a limiting rod, 23, a second distance sensor, 24, a first pressure sensor, 25, a second pressure sensor, 26, a convex plate, 27, a positioning rod, 28, a conveyor belt, 29, a third motor, 30, a buffer block, 31, a third output shaft, 32, a roller, 33, a horizontal rod, 34, a fan, 35, a cylinder, 36, a piston plate, 37, a support rod, 38, a sliding frame, 39, a spring, 40, an action plate, C5. the integrated circuit comprises a fifth capacitor, C6. a sixth capacitor, C7. a seventh capacitor, C8. an eighth capacitor, C9. a ninth capacitor, C10 a tenth capacitor, L3 a third inductor, L4 a fourth inductor, VD2 a third diode, VD3 a third triode, VD4 a fourth triode, R3 a third resistor, R4 a fourth resistor, BL. a buzzer, VT1 a first diode, VT2 a second diode and U1..

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a security door with high face recognition accuracy comprises a bottom plate 1, a top cover 2, a loudspeaker 3, a processor 4, a lifting mechanism, a moving plate 5, a correcting mechanism, a recognition mechanism and two lateral plates 6, wherein the two lateral plates 6 are respectively fixed above two ends of the bottom plate 1, the top cover 2 is erected on the two lateral plates 6, the processor 4 and the loudspeaker 3 are both fixed above the top cover 2, the processor 4 is internally provided with a PLC, the loudspeaker 3 is electrically connected with the PLC, the lifting mechanism is located below the top cover 2, the lifting mechanism is in transmission connection with the moving plate 5, and the recognition mechanism and the correcting mechanism are respectively located below two ends of the moving plate 5;

this face identification safety inspection door moves, by 3 suggestion tourists of speaker stand on bottom plate 1, after the visitor stands on bottom plate 1, elevating system drives movable plate 5 and descends, the one end of movable plate 5, correct the head of visitor by correction mechanism, prevent that the head of visitor from taking place the rotation about, then gather the image through identification mechanism from the front of visitor's face, carry out face identification, because camera 16 shoots the people's face from the front, thereby the image production deviation of gathering when preventing user's face from deflecting, and then the precision of face identification has been improved, be convenient for this safety inspection door carry out authentication and safety inspection work. .

As shown in fig. 2, the correcting mechanism includes a first motor 7 and two correcting components, the first motor 7 is fixed below the moving plate 5, the first motor 7 is electrically connected with the PLC, the two correcting components are respectively located at two sides of the first motor 7, the correcting components include a support tube 8, a first output shaft 9, a flat plate 10 and a correcting unit, the support tube 8 is fixed below the moving plate 5, the first motor 7 is in transmission connection with one end of the first output shaft 9, the other end of the first output shaft 9 is arranged in the support tube 8, the top end of the flat plate 10 is sleeved on the first output shaft 9, the connection part of the flat plate 10 and the first output shaft 9 is provided with a thread matching with the first output shaft 9, and the correcting unit is arranged at the bottom end of the flat plate 10;

after the movable plate 5 descends to the head top position of the tourist, the PLC controls the first motor 7 to be started, the first output shaft 9 is driven to rotate, the first output shaft 9 acts on the flat plate 10 through threads, the flat plate 10 in the correction assemblies on the two sides moves along the axis of the first output shaft 9, the two flat plates 10 are close to each other, the correction unit at the bottom end of the flat plate 10 acts on the head of the tourist, the head of the tourist is prevented from rotating left and right, the camera 16 of the recognition mechanism is convenient to collect face images from the front, and the accuracy of face recognition is guaranteed.

As shown in fig. 3, the recognition mechanism includes a hanger rod 11, a hanger plate 12, a direction-adjusting component and a recognizer 13, the hanger plate 12 is fixed below the moving plate 5 through the hanger rod 11, the direction-adjusting component is located between the recognizer 13 and the hanger plate 12, the direction-adjusting component is in transmission connection with the recognizer 13, the recognizer 13 is provided with a display 14, a direction-adjusting plate 15, a camera 16, a first distance sensor 17 and two adjusting components, the two adjusting components are located on two sides of the display 14 respectively, the adjusting components are in transmission connection with the direction-adjusting plate 15, the camera 16 and the first distance sensor 17 are both fixed on the direction-adjusting plate 15, and the camera 16 and the first distance sensor 17 are both electrically connected with the PLC.

After the correction of the head of the tourist is finished, the PLC controls the operation of the adjusting assembly at the moment to drive the direction adjusting plate 15 to move up and down, the first distance sensors 17 on the direction adjusting plate 15 detect the horizontal distance between the direction adjusting plate 15 and the face part, and the distance data is fed back to the PLC, the PLC determines the pitch angle of the head of the tourist according to the data between the direction adjusting plate 15 and the face of the tourist and judges whether the tourist lowers or raises the head, then the PLC controls the operation of the direction adjusting assembly according to the angle of lowering or raising the head of the tourist so that the camera 16 on the direction adjusting plate 15 is right opposite to the face, the camera 16 collects the face image from the front, and therefore the camera 16 is ensured to collect the face image from the front, the accurate face recognition of the equipment is further facilitated, the validity of the identity verification is ensured, and the recognition precision of the equipment is improved;

as shown in fig. 5, a wireless receiving module is disposed in the processor 4, the wireless receiving module includes a wireless receiving circuit, the wireless receiving circuit includes a second antenna, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a third inductor L3, a fourth inductor L4, a third transistor VD3, a first diode VT1, a second diode VT2, a third diode VD2, and a third resistor R3, the second antenna is grounded through a series circuit of the seventh capacitor C7 and the third inductor L3, the series circuit of the fifth capacitor C5 and the sixth capacitor C6 is connected in parallel with the third inductor L3, one end of the fourth inductor L4 is connected to the anode of the first diode VT1, the other end of the fourth inductor L4 is connected to the ground through the eighth capacitor C8, the base of the third transistor VD3 is connected to the cathode 573 of the first diode VT and the cathode 1, the anode of the second triode is grounded, the emitter of the third triode VD3 is connected with the anode of a third diode VD2, the cathode of the third diode VD2 is grounded, the collector of the third triode VD3 is externally connected with a 5V direct current voltage power supply through a third resistor R3, the control circuit comprises an integrated circuit U1, a fourth resistor R4, a ninth capacitor C9, a tenth capacitor C10, a fourth triode VD4 and a buzzer BL, the model of the integrated circuit U1 is NE555, the fourth end and the eighth end of the integrated circuit U1 are externally connected with the 5V direct current voltage power supply, the seventh end of the integrated circuit U1 is connected with the sixth end of the integrated circuit U1, the seventh end of the integrated circuit U1 is externally connected with the 5V direct current voltage power supply through a fourth resistor R4, the seventh end of the integrated circuit U1 is grounded through the ninth capacitor C9, the second end of the integrated circuit U1 is connected with the collector 3 of the third triode VD 352, the first end ground of integrated circuit U1, the fifth end of integrated circuit U1 is through tenth electric capacity C10 ground connection, the third end and the base of fourth triode VD4 of integrated circuit U1 are connected, the projecting pole ground of fourth triode VD4, the external 5V direct current voltage power supply of buzzer BL is passed through to the collecting electrode of fourth triode VD4.

As shown in fig. 1, the lifting mechanism includes a second motor 18, a first connecting rod 19 and a second connecting rod 20, the second motor 18 is fixed below the top cover 2, the second motor 18 is electrically connected to the PLC, the second motor 18 is in transmission connection with the first connecting rod 19, and the first connecting rod 19 is in transmission connection with the moving plate 5 through the second connecting rod 20.

The PLC controls the second motor 18 to start, so as to drive the first connecting rod 19 to rotate, and the first connecting rod 19 acts on the moving plate 5 through the second connecting rod 20, so that the moving plate 5 moves.

Preferably, in order to realize the stable movement of the movable plate 5, the lifting assembly further comprises two limiting assemblies, the two limiting assemblies are respectively located at two ends of the movable plate 5, each limiting assembly comprises a limiting ring 21 and a limiting rod 22, the limiting ring 21 is fixed on the movable plate 5, the top end and the bottom end of the limiting rod 22 are respectively fixedly connected with the top cover 2 and the bottom plate 1, and the limiting ring 21 is sleeved on the limiting rod 22. The position of the limiting rod 22 is fixed between the bottom plate 1 and the top cover 2, and the limiting ring 21 moves along the axis of the limiting rod 22, so that the moving direction of the moving plate 5 is fixed, and the stable movement of the moving plate 5 is realized.

Preferably, in order to bring the moving plate 5 close to the top of the visitor's head, a second distance sensor 23 is provided below the moving plate 5, and the distance sensor is electrically connected to the PLC.

After the tourist stands on the bottom plate 1, the second distance sensor detects the distance between the moving plate 5 and the top of the tourist and uploads the distance to the PLC, and the PLC controls the lifting mechanism to operate according to the distance, so that the moving plate 5 is attached to the top of the tourist.

Preferably, in order to detect whether a person stands on the base plate 1, a first pressure sensor 24 is provided in the base plate 1, and the first pressure sensor 24 is electrically connected to the PLC.

After the person stands on the bottom plate 1, the first pressure sensor 24 in the bottom plate 1 detects pressure data and uploads the pressure data to the PLC, so that the PLC determines the person standing on the bottom plate 1 according to the pressure data.

As shown in fig. 2, the correcting unit includes a second pressure sensor 25, a spring 39, an acting plate 40 and an orientation unit, the second pressure sensor 25 is fixed on one side of the flat panel 10 close to the first motor 7, the second pressure sensor 25 is electrically connected to the PLC, and the acting plate 40 is connected to the second pressure sensor 25 through the spring 39.

The two flat plates 10 are close to each other, the head of the tourist is corrected through the correcting unit at the bottom end of the flat plates 10, along with the movement of the flat plates 10, the acting plate 40 on the correcting unit abuts against the head of the tourist, the spring 39 is compressed, the second pressure sensor 25 detects pressure data and uploads the pressure data to the PLC, the PLC judges whether the head of the tourist rotates left and right according to the size of the pressure data detected by the second pressure sensor 25 in the two correcting units, when the pressure data rotate left and right, the pressure data of the two second pressure sensors 25 are unequal, the PLC prompts the tourist to adjust the angle through the display 14 on the recognizer 13, and when the pressure data of the two second pressure sensors 25 are equal, the situation that the head of the tourist is positioned at the middle position on the bottom plate 1 at the moment is indicated.

Preferably, in order to fix the moving direction of the acting plate 40, the orientation unit comprises a convex plate 26 and two positioning rods 27, two ends of the convex plate 26 are respectively fixedly connected with the acting plate 40 through the two positioning rods 27, and the flat plate 10 is sleeved on the positioning rods 27. The action plate 40 is moved along the axis of the positioning rod 27 by the positioning rod 27, and the positioning rod 27 is prevented from being separated from the flat plate 10 by the convex plate 26, thereby ensuring the stable movement of the action plate 40.

As shown in fig. 3, the adjusting assembly includes a conveyor belt 28 and two driving units, the conveyor belt 28 is fixedly connected with the direction-adjusting plate 15, the two driving units are respectively located at two ends of the conveyor belt 28, the driving unit includes a third motor 29, a buffer block 30, a third output shaft 31 and a roller 32, the third motor 29 and the buffer block 30 are both fixed on the identifier 13, the third motor 29 is electrically connected with the PLC, the third output shaft 31 is located between the third motor 29 and the buffer block 30, the third motor 29 is in transmission connection with the third output shaft 31, and the roller 32 is sleeved on the third output shaft 31.

The PLC controls the third motor 29 to start, which drives the third output shaft 31 to rotate, so as to rotate the roller 32, which acts on the conveyor belt 28, so that the conveyor belt 28 rotates, and the direction-adjusting plate 15 is driven to move.

As shown in fig. 5, the direction-adjusting assembly includes a horizontal rod 33, a fan 34, an air cylinder 35, a piston plate 36 and a support rod 37, the horizontal rod 33 and the air cylinder 35 are both fixed on the hanger plate 12, the horizontal rod 33 is hinged to the identifier 13, the air cylinder 35 is located above the horizontal rod 33, the fan 34 is electrically connected to the PLC, the fan 34 is communicated with the air cylinder 35, the top end of the piston plate 36 is disposed in the air cylinder 35, and the bottom end of the piston plate 36 is hinged to the identifier 13 through the support rod 37.

The PLC controls the fan 34 to operate, changes the air pressure in the air cylinder 35, the piston plate 36 moves according to the air pressure change of the air cylinder 35, and acts on the recognizer 13 through the supporting rod 37, so that the camera 16 on the recognizer 13 is opposite to a human face, and the accuracy of human face recognition is improved conveniently.

Preferably, in order to realize the smooth movement of the flat plate 10, the straightening mechanism further comprises a sliding frame 38, the sliding frame 38 is U-shaped, two ends of the sliding frame 38 are fixed below the moving plate 5, and the flat plate 10 is sleeved on the sliding frame 38. The sliding frame 38 fixes the moving direction of the plate 10, and prevents the plate 10 from rotating when the first output shaft 9 rotates, thereby realizing smooth rotation of the plate 10.

This face identification safety inspection door moves, drive movable plate 5 through elevating system and descend to visitor's overhead position after, act on the flat board 10 of both sides through first motor 7, make two flat boards 10 be close to each other, act on the both sides at the people's face by the correction unit, when preventing that camera 16 from gathering facial image, the head takes place and deflects about, after the correction is accomplished, drive diversion board 15 through adjusting part and reciprocate, utilize first distance sensor 17 scanning face profile, confirm behind the angle of pitch of visitor's head, adjust the direction of recognizer 13 by diverting the subassembly, make camera 16 just to the people's face, be convenient for shoot visitor's positive image of face, and then the face identification precision has been improved, authentication's effective accuracy has been guaranteed.

Compared with the prior art, the security door with high face recognition precision corrects the head of the tourist from two sides through the correction mechanism, prevents the head of the tourist from deflecting left and right when shooting a face image, compared with the prior correction mechanism, the correction mechanism can adjust the head angle of the tourist, is convenient for the recognizer 13 to be right opposite to the face, not only can scan the face outline through the recognition mechanism, and after determining the pitch angle of the head of the tourist, the camera 16 is adjusted, so that the camera 16 collects the front face image, thereby improving the face recognition precision and being beneficial to the smooth operation of security inspection, compared with the prior recognition mechanism, the recognition mechanism has flexible structure, can be correspondingly adjusted according to the head angle of the tourist, is convenient for improving the accuracy of face recognition, and in a remote control transmitting circuit, the conventional components are adopted, thereby reducing the production cost while realizing wireless reliable transmission, the market competitiveness of the remote control circuit is improved; moreover, in the remote control receiving circuit, the first diode VT1 and the second diode VT2 constitute a voltage doubling circuit to perform voltage doubling rectification on the wireless signal corresponding to the fourth inductor L4, so that the wireless signal is reliably received in an induction mode, and the reliability of the remote control circuit is improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The security door is high in face recognition accuracy and is characterized by comprising a bottom plate (1), a top cover (2), a loudspeaker (3), a processor (4), a lifting mechanism, a movable plate (5), a correcting mechanism, a recognition mechanism and two lateral plates (6), wherein the two lateral plates (6) are respectively fixed above two ends of the bottom plate (1), the top cover (2) is erected on the two lateral plates (6), the processor (4) and the loudspeaker (3) are both fixed above the top cover (2), a PLC is arranged in the processor (4), the loudspeaker (3) is electrically connected with the PLC, the lifting mechanism is located below the top cover (2), the lifting mechanism is in transmission connection with the movable plate (5), and the recognition mechanism and the correcting mechanism are respectively located below two ends of the movable plate (5);

the correcting mechanism comprises a first motor (7) and two correcting components, the first motor (7) is fixed below the moving plate (5), the first motor (7) is electrically connected with the PLC, the two straightening components are respectively positioned at two sides of the first motor (7), the correcting component comprises a supporting tube (8), a first output shaft (9), a flat plate (10) and a correcting unit, the supporting tube (8) is fixed below the moving plate (5), the first motor (7) is in transmission connection with one end of a first output shaft (9), the other end of the first output shaft (9) is arranged in the supporting pipe (8), the top end of the flat plate (10) is sleeved on the first output shaft (9), a connecting part of the flat plate (10) and the first output shaft (9) is provided with a thread matched with the first output shaft (9), and the correcting unit is arranged at the bottom end of the flat plate (10);

the identification mechanism comprises a hanging rod (11), a hanging plate (12), a direction adjusting component and an identifier (13), the hanging plate (12) is fixed below the moving plate (5) through the hanging rod (11), the direction adjusting component is located between the identifier (13) and the hanging plate (12), the direction adjusting component is in transmission connection with the identifier (13), the identifier (13) is provided with a display (14), a direction adjusting plate (15), a camera (16), a first distance sensor (17) and two adjusting components, the two adjusting components are respectively located on two sides of the display (14), the adjusting components are in transmission connection with the direction adjusting plate (15), the camera (16) and the first distance sensor (17) are both fixed on the direction adjusting plate (15), and the camera (16) and the first distance sensor (17) are both electrically connected with the PLC;

a wireless receiving module is arranged in the processor (4), the wireless receiving module comprises a wireless receiving circuit, the wireless receiving circuit comprises a second antenna, a fifth capacitor (C5), a sixth capacitor (C6), a seventh capacitor (C7), an eighth capacitor (C8), a third inductor (L3), a fourth inductor (L4), a third triode (VD3), a first diode (VT1), a second diode (VT2), a third diode (VD2) and a third resistor (R3), the second antenna is grounded through a series circuit formed by the seventh capacitor (C7) and the third inductor (L3), a series circuit formed by the fifth capacitor (C5) and the sixth capacitor (C6) is connected with the third inductor (L3) in parallel, one end of the fourth inductor (L4) is connected with the anode of the first diode (1), and the other end of the fourth inductor (L4) is grounded through an eighth capacitor (C8), the base electrode of the third triode (VD3) is respectively connected with the cathode of the first diode (VT1) and the cathode of the second triode, the anode of the second triode is grounded, the emitter of the third triode (VD3) is connected with the anode of the third diode (VD2), the cathode of the third diode (VD2) is grounded, the collector of the third triode (VD3) is externally connected with a 5V direct current voltage power supply through a third resistor (R3), the control circuit comprises an integrated circuit (U1), a fourth resistor (R4), a ninth capacitor (C9), a tenth capacitor (C10), a fourth triode (VD4) and a Buzzer (BL), the model of the integrated circuit (U1) is NE555, the fourth end and the eighth end of the integrated circuit (U1) are externally connected with a 5V direct current voltage power supply, the seventh end of the integrated circuit (U1) is connected with the sixth end of the integrated circuit (U1), the seventh end of the integrated circuit (U1) is connected with an external 5V direct current voltage power supply through a fourth resistor (R4), the seventh end of the integrated circuit (U1) is grounded through a ninth capacitor (C9), the second end of the integrated circuit (U1) is connected with the collector of a third triode (VD3), the first end of the integrated circuit (U1) is grounded, the fifth end of the integrated circuit (U1) is grounded through a tenth capacitor (C10), the third end of the integrated circuit (U1) is connected with the base of a fourth triode (VD4), the emitter of the fourth triode (VD4) is grounded, and the collector of the fourth triode (VD4) is connected with an external 5V direct current voltage power supply through a Buzzer (BL).

2. The security door with high face recognition accuracy as claimed in claim 1, wherein the lifting mechanism comprises a second motor (18), a first connecting rod (19) and a second connecting rod (20), the second motor (18) is fixed below the top cover (2), the second motor (18) is electrically connected with the PLC, the second motor (18) is in transmission connection with the first connecting rod (19), and the first connecting rod (19) is in transmission connection with the moving plate (5) through the second connecting rod (20).

3. The security door with high face recognition accuracy according to claim 2, wherein the lifting assembly further comprises two limiting assemblies, the two limiting assemblies are respectively located at two ends of the moving plate (5), the limiting assemblies comprise limiting rings (21) and limiting rods (22), the limiting rings (21) are fixed on the moving plate (5), the top ends and the bottom ends of the limiting rods (22) are respectively and fixedly connected with the top cover (2) and the bottom plate (1), and the limiting rings (21) are sleeved on the limiting rods (22).

4. The security door with high face recognition accuracy as claimed in claim 1, wherein a second distance sensor (23) is arranged below the moving plate (5), and the distance sensor is electrically connected with the PLC.

5. The security door with high face recognition accuracy as claimed in claim 1, wherein a first pressure sensor (24) is arranged in the bottom plate (1), and the first pressure sensor (24) is electrically connected with the PLC.

6. The security door with high face recognition accuracy as claimed in claim 1, wherein the correction unit comprises a second pressure sensor (25), a spring (39), an acting plate (40) and an orientation unit, the second pressure sensor (25) is fixed on one side of the flat plate (10) close to the first motor (7), the second pressure sensor (25) is electrically connected with the PLC, and the acting plate (40) is connected with the second pressure sensor (25) through the spring (39).

7. The security door with high face recognition accuracy of claim 6, wherein the orientation unit comprises a convex plate (26) and two positioning rods (27), two ends of the convex plate (26) are respectively fixedly connected with the acting plate (40) through the two positioning rods (27), and the flat plate (10) is sleeved on the positioning rods (27).

8. The security door with high face recognition accuracy as claimed in claim 1, wherein the adjusting assembly comprises a conveyor belt (28) and two driving units, the conveyor belt (28) is fixedly connected with the direction adjusting plate (15), the two driving units are respectively located at two ends of the conveyor belt (28), each driving unit comprises a third motor (29), a buffer block (30), a third output shaft (31) and a roller (32), the third motor (29) and the buffer block (30) are both fixed on the recognizer (13), the third motor (29) is electrically connected with the PLC, the third output shaft (31) is located between the third motor (29) and the buffer block (30), the third motor (29) is in transmission connection with the third output shaft (31), and the roller (32) is sleeved on the third output shaft (31).

9. The security door with high face recognition accuracy as claimed in claim 1, wherein the direction adjusting component comprises a horizontal rod (33), a fan (34), a cylinder (35), a piston plate (36) and a support rod (37), the horizontal rod (33) and the cylinder (35) are both fixed on the hanger plate (12), the horizontal rod (33) is hinged to the recognizer (13), the cylinder (35) is located above the horizontal rod (33), the fan (34) is electrically connected with the PLC, the fan (34) is communicated with the cylinder (35), the top end of the piston plate (36) is arranged in the cylinder (35), and the bottom end of the piston plate (36) is hinged to the recognizer (13) through the support rod (37).

10. The security door with high face recognition accuracy as claimed in claim 1, wherein the rectification mechanism further comprises a sliding frame (38), the sliding frame (38) is U-shaped, two ends of the sliding frame (38) are fixed below the moving plate (5), and the flat plate (10) is sleeved on the sliding frame (38).