Face recognition device for passenger elevator

Abstract

The invention discloses a passenger elevator face recognition device, and relates to the technical field of elevators, the passenger elevator face recognition device comprises a machine body, one side of the machine body is provided with a display screen, a magnetic card recognition area and a light supplement lamp, the top of the machine body is provided with a storage structure, the middle of the storage structure is provided with a camera, and the outside of the storage structure is provided with a protection structure. According to the passenger elevator face recognition device, through the reciprocating lead screw and the storage bin, the camera is arranged to be telescopic, then the risk that the camera is scraped and abraded daily can be effectively reduced, the service life of the camera is prolonged, meanwhile, a cam plate rotates to drive a traction rope to swing, and therefore the safety of the passenger elevator is improved. The rotating plate is driven to swing, the camera is driven to swing up and down, the face image acquisition range of the camera is widened, the face recognition effect is improved, and the problem that face recognition of a person with small height and body shape or a person with large height and body shape and inconvenient to bend down with a heavy object is not accurate enough is solved.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and in particular to a facial recognition device for passenger elevators. Background Technology

[0002] The passenger elevator facial recognition device is an intelligent elevator control system based on biometric recognition technology. It dynamically captures facial information through a camera and compares it with a database to achieve contactless identity authentication, hierarchical access control, and automatic registration of target floors. Its core function is to improve building security, optimize elevator efficiency, and ensure access control in specific areas, while promoting the development of smart buildings towards automation and personalized services.

[0003] Existing passenger elevator facial recognition devices mainly include a body, a display screen, a magnetic card recognition area, a camera, and a supplementary light. In use, the camera performs facial recognition, automatically controlling the elevator to the designated floor, achieving contactless elevator use. During this process, the supplementary light provides illumination to improve the camera's recognition effect. The magnetic card reader can also independently control the elevator buttons, allowing the elevator to go to non-preset floors or be used by individuals who have not registered their facial recognition information. However, in actual use, the camera lacks protective measures inside the elevator, frequently suffering scratches and bumps, leading to wear and tear and reducing its lifespan. Furthermore, the camera's relatively fixed position results in a poor user experience for shorter individuals or taller individuals who have difficulty bending over to carry heavy loads.

[0004] Therefore, a facial recognition device for passenger elevators is proposed to address the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, such as the lack of protective measures inside elevators where cameras are frequently scratched and bumped, leading to wear and tear and reducing their lifespan, and the relatively fixed camera positions, which result in a poor user experience for shorter individuals or taller individuals who have difficulty bending over to carry heavy loads, a passenger elevator facial recognition device is proposed.

[0006] The technical solution adopted by this invention to solve its technical problem is: a passenger elevator face recognition device, including a body, a display screen, a magnetic card recognition area and a supplementary light installed on one side of the body, a storage structure installed on the top of the body, a camera installed in the middle of the storage structure, a protective structure installed on the outside of the storage structure, the storage structure including a storage compartment opened on the top of the body, two reciprocating screws rotatably connected inside the storage compartment, a pulley set two being installed at one end of the two reciprocating screws, a sliding frame being threadedly connected to the outer wall of the two reciprocating screws, a rotating plate being rotatably connected inside the sliding frame, and one side of the rotating plate being fixedly installed with one side of the camera.

[0007] Preferably, a cam plate is rotatably connected to one side of the storage compartment, and a traction rope is fixedly connected to the end of the cam plate away from the rotation axis. The traction rope is fixedly connected to the bottom end of the rotating plate away from the camera.

[0008] Preferably, a magnetic block one is fixedly connected to the top of the rotating plate on the side away from the camera, and a magnetic block two is installed on the top of the sliding frame. The opposing surfaces of the magnetic block one and the magnetic block two are in a state of attraction between opposite poles.

[0009] Preferably, the top and bottom of the sliding frame are provided with arc grooves, and the inner wall of the arc grooves fits against the edge of the rotating plate.

[0010] Preferably, a mounting bracket is fixedly connected to the side of the machine body away from the display screen. A servo motor is installed in the middle of the mounting bracket. A four-way pawl is fixedly connected to the output end of the servo motor. A pulley set one is installed at one end of the four-way pawl. A one-way bearing one and a one-way bearing two are respectively installed in the middle of the two pulleys of the pulley set one. The middle of the one-way bearing one is fixedly connected to the end of a reciprocating lead screw. The middle of the one-way bearing two is fixedly connected to the end of the cam plate away from the traction rope.

[0011] Preferably, the protective structure includes two locking frames fixedly connected to one side of the machine body. The two locking frames are symmetrically distributed at equal intervals on the upper and lower sides of the storage compartment. Two guide posts are fixedly connected to the opposite sides of the two locking frames. Protective plates are slidably connected to the outer walls of the guide posts located at the upper and lower positions. Two sets of steel wire ropes are fixedly connected to the side of the sliding frame away from the traction rope. The ends of the upper and lower sets of steel wire ropes that pass through the storage compartment are respectively fixedly connected to one side of the upper and lower protective plates.

[0012] Preferably, the two protective plates are respectively provided with a plug and a slot on their opposite sides, and the size and shape of the outer wall of the plug are adapted to the size and shape of the inner wall of the slot.

[0013] Preferably, all the guide posts are fitted with a spring on their outer wall, and the two ends of the spring are fixedly connected to the end of the guide post and one side of the inside of the protective plate, respectively.

[0014] Preferably, a sliding rod is fixedly connected to the side of the card frame near the protective plate, and a rubber scraper is slidably connected to one end of the sliding rod, with one side of the rubber scraper abutting against one side of the protective plate.

[0015] Preferably, a second spring is sleeved on the end of the slide rod, and the two ends of the second spring are fixedly connected to one side of the rubber scraper and one side of the card frame, respectively.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0017] 1. This invention provides a facial recognition device for passenger elevators. By using a reciprocating screw and a storage compartment, the camera is made telescopic, which can effectively reduce the risk of daily scratches and wear on the camera, thereby extending the camera's service life. At the same time, the rotation of the cam plate can drive the traction rope to swing, which in turn causes the rotating plate to swing, causing the camera to shake up and down, thereby increasing the camera's image acquisition range for faces and improving the facial recognition effect. This avoids the problem of insufficient facial recognition for people of shorter stature or taller stature who have difficulty bending over while carrying heavy objects.

[0018] 2. This invention provides a face recognition device for passenger elevators. The protective plate further protects the camera, thereby extending its service life. At the same time, the opening and closing of the protective plate can be linked with the extension and retraction of the camera using a steel wire rope and a spring, thereby realizing the automatic opening and closing of the protective plate, improving the overall automation level of the device, and enhancing the practical effect of the protective plate.

[0019] 3. This invention provides a face recognition device for passenger elevators. Through the cooperation of one-way bearing one and one-way bearing two, the driving force of the servo motor can achieve the effect of multiple uses of one force, reducing the implementation cost of the entire device. It can also make the extension and swing of the camera independent of each other, thereby improving the overall smoothness of the device's operation.

[0020] 4. This invention provides a face recognition device for passenger elevators. The protective plate can be cleaned by a rubber scraper, thereby preventing the protective plate from being contaminated by daily dirt and stains, which would lead to corrosion and affect its appearance. At the same time, a clean protective plate can improve the user experience. During the cleaning process of the rubber scraper, the reaction force of the second spring causes the rubber scraper to press firmly against the surface of the protective plate, thereby further improving the cleaning effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0023] Figure 3 This is a schematic diagram of the storage compartment structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the cam plate structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the sliding frame of the present invention;

[0026] Figure 6 This is a schematic diagram of the card frame structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the cross-sectional structure of the protective plate of the present invention;

[0028] Figure 8 This is a schematic diagram of the slide bar structure of the present invention.

[0029] In the diagram: 1. Main body; 2. Display screen; 3. Magnetic card recognition area; 4. Camera; 5. Fill light; 6. Storage structure; 61. Storage compartment; 62. Reciprocating lead screw; 63. Sliding frame; 64. Servo motor; 65. Quarter jaw; 66. Belt pulley group one; 67. Belt pulley group two; 68. Cam plate; 69. Traction rope; 610. One-way bearing one; 611. One-way bearing two; 612. Arc groove; 613. Rotating plate; 614. Magnetic block one; 615. Magnetic block two; 7. Protective structure; 71. Card frame; 72. Protective plate; 73. Steel wire rope; 74. Guide column; 75. Spring one; 76. Slide rod; 77. Rubber scraper; 78. Spring two. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Specific implementation examples are given below.

[0032] Please see Figure 1 - Figure 8This invention provides a technical solution: a face recognition device for a passenger elevator, comprising a body 1, a display screen 2, a magnetic card recognition area 3, and a supplementary light 5 installed on one side of the body 1, a storage structure 6 installed on the top of the body 1, a camera 4 installed in the middle of the storage structure 6, and a protective structure 7 installed on the outside of the storage structure 6. The storage structure 6 includes a storage compartment 61 opened on the top of the body 1, with two reciprocating screws 62 rotatably connected inside the storage compartment 61. One end of the two reciprocating screws 62 is connected to a pulley set 67, and the outer walls of the two reciprocating screws 62 are threadedly connected to a sliding frame 63. A rotating plate 613 is rotatably connected inside the sliding frame 63, and one side of the rotating plate 613 is fixedly installed with one side of the camera 4. A servo motor 64 drives the two reciprocating screws 62 to rotate synchronously, thereby causing the sliding frame 63 to drive the camera 4 to slide inside the storage compartment 61, thus facilitating the storage and protection of the camera 4.

[0033] It should be noted that the pulley assembly 267 consists of two toothed pulleys and a toothed belt that meshes with them.

[0034] like Figure 4 As shown, a cam plate 68 is rotatably connected to one side of the storage compartment 61. A traction rope 69 is fixedly connected to the end of the cam plate 68 away from the rotation axis. The traction rope 69 is fixedly connected to the bottom end of the rotating plate 613 away from the camera 4. The rotation of the cam plate 68 can drive the traction rope 69 to swing, which in turn causes the rotating plate 613 to swing, which in turn causes the camera 4 to shake up and down, thereby increasing the image range of the camera 4 for the face, thereby improving the face recognition effect and avoiding the problem of insufficient face recognition for people with short stature or large stature who have difficulty bending over when carrying heavy objects.

[0035] like Figure 5 As shown, a magnetic block 614 is fixedly connected to the top of the rotating plate 613 on the side away from the camera 4, and a magnetic block 615 is installed on the top of the sliding frame 63. The opposing surfaces of the magnetic block 614 and the magnetic block 615 are in a state of attraction between opposite poles. During the rotation of the rotating plate 613 caused by the traction rope 69, the attraction between the magnetic block 614 and the magnetic block 615, combined with the traction force of the traction rope 69 on the rotating plate 613, makes the rotation of the rotating plate 613 more stable, thereby improving the stability of the camera 4 in capturing facial images.

[0036] like Figure 5 As shown, the top and bottom of the sliding frame 63 are provided with arc grooves 612. The inner wall of the arc groove 612 fits against the edge of the rotating plate 613. The fit between the arc groove 612 and the rotating plate 613 makes the rotation of the rotating plate 613 more stable, thereby extending the service life of the rotating plate 613.

[0037] like Figure 2 and Figure 4 As shown, a mounting bracket is fixedly connected to the side of the machine body 1 away from the display screen 2. A servo motor 64 is mounted in the middle of the mounting bracket. A four-way pawl 65 is fixedly connected to the output end of the servo motor 64. A pulley set 66 is mounted on one end of the four-way pawl 65. One-way bearing 610 and one-way bearing 611 are respectively mounted in the middle of the two pulleys of the pulley set 66. The middle of one-way bearing 610 is fixedly connected to the end of a reciprocating lead screw 62. The middle of one-way bearing 611 is fixedly connected to the end of the cam plate 68 away from the traction rope 69. When the servo motor 64 is started, it drives the four-way pawl 65 to rotate. The rotation of the belt pulleys causes the pulley assembly to work, resulting in the two pulleys of the belt pulley assembly rotating in the forward direction. At this time, the first one-way bearing 610 rotates, while the second one-way bearing 611 remains stationary, causing a reciprocating screw 62 to rotate. Under the action of the second pulley assembly 67, the two reciprocating screws 62 rotate synchronously, causing the sliding frame 63 to slide. The servo motor 64 drives the four-way pawl 65 to rotate in the reverse direction, causing the second one-way bearing 611 and the first one-way bearing 610 to remain stationary. At this time, the second one-way bearing 611 drives the cam plate 68 to rotate, which in turn drives the traction rope 69 to swing.

[0038] It should be noted that the servo motor 64 control circuit is electrically connected to the elevator monitoring circuit. This signal control circuit is a common existing technology and is often used in fields such as elevator monitoring intelligent identification of electric vehicles and alarms. Specifically, the elevator monitoring system will drive the servo motor 64 to work after identifying personnel entering the elevator. Technical personnel in related fields can implement this circuit through description without creative operation.

[0039] It should be noted that the pulley assembly 66 consists of two toothed pulleys and a toothed belt that meshes with them.

[0040] like Figure 6 As shown, the protective structure 7 includes two locking frames 71 fixedly connected to one side of the body 1. The two locking frames 71 are symmetrically distributed at equal intervals on the upper and lower sides of the storage compartment 61. Two guide posts 74 are fixedly connected to the opposite sides of the two locking frames 71. Protective plates 72 are slidably connected to the outer walls of the guide posts 74 located at the upper and lower positions. Two sets of steel wire ropes 73 are fixedly connected to the side of the sliding frame 63 away from the traction rope 69. One end of the upper and lower sets of steel wire ropes 73 passes through the storage compartment 61 and is fixedly connected to one side of the upper and lower protective plates 72 respectively. When the sliding frame 63 slides, it drives the steel wire ropes 73 to pull the protective plates 72, thereby causing the two protective plates 72 to slide stably towards each other under the action of the guide posts 74, thus blocking the opening surface of the storage compartment 61, thereby protecting the camera 4 and preventing the camera 4 from being scratched or bumped.

[0041] like Figure 6 and Figure 7 As shown, the two protective plates 72 are respectively provided with inserts and slots on their opposite sides. The size and shape of the outer wall of the insert are adapted to the size and shape of the inner wall of the slot. The inserts and slots on the opposite sides of the two anti-slip plates can make the insertion between the two protective plates 72 more secure, thereby further improving the protective effect of the two protective plates 72.

[0042] like Figure 7 As shown, all guide posts 74 are fitted with springs 75 on their outer walls. The two ends of springs 75 are fixedly connected to one end of the guide post 74 and one side of the inside of the protective plate 72, respectively. As the sliding frame 63, together with the camera 4, gradually slides out of the storage compartment 61, the traction of the steel wire rope 73 on the protective plate 72 gradually relaxes, causing the protective plate 72 to gradually retract into the frame 71 under the reaction of springs 75, thereby realizing the automatic opening and closing of the protective plate 72.

[0043] like Figure 8 As shown, a sliding rod 76 is fixedly connected to the side of the card frame 71 near the protective plate 72. A rubber scraper 77 is slidably connected to one end of the sliding rod 76. One side of the rubber scraper 77 abuts against one side of the protective plate 72. During the sliding process of the protective plate 72, the rubber scraper 77 can clean the protective plate 72, thereby preventing the protective plate 72 from being contaminated by daily dirt, which would lead to corrosion of the protective plate 72 and affect its appearance. At the same time, a clean protective plate 72 can improve the user experience.

[0044] like Figure 8 As shown, a second spring 78 is sleeved at the end of the slide bar 76. The two ends of the second spring 78 are fixedly connected to one side of the rubber scraper 77 and one side of the clip frame 71, respectively. During the cleaning process of the rubber scraper 77, the reaction force of the second spring 78 causes the rubber scraper 77 to press tightly against the surface of the protective plate 72, thereby further improving the cleaning effect.

[0045] The working principle of this invention is as follows: When someone enters the elevator, the servo motor 64 starts, which drives the four-way pawl 65 to rotate forward, thereby driving the pulley assembly to work. This causes the two pulleys of the pulley assembly to rotate forward. At this time, the one-way bearing 610 rotates, which in turn causes the reciprocating screw 62 to rotate. Under the action of the second pulley assembly 67, the two reciprocating screws 62 rotate synchronously, causing the sliding frame 63 to slide outward, which causes the camera 4 to protrude from the surface of the body 1. When the camera 4 slides to the outermost position and remains stable, the servo motor 64 drives the four-way pawl 65 to rotate in the reverse direction, which causes the one-way bearing 611 to stop. At this time, the one-way bearing 611 drives the cam plate 68. The rotation of the rotating plate 613 causes the traction rope 69 to swing, which in turn causes the rotating plate 613 to swing, resulting in the camera 4 shaking up and down. This increases the camera 4's image-capturing range for faces, thereby improving the face recognition effect and avoiding the problem of inaccurate face recognition for shorter individuals or taller individuals who have difficulty bending over while carrying heavy objects. During the rotation of the rotating plate 613 caused by the traction rope 69, the attraction between magnetic block 1 614 and magnetic block 2 615, combined with the traction force of the traction rope 69 on the rotating plate 613, creates a balance between the two forces, resulting in a more stable rotation of the rotating plate 613. This improves the stability of the face image capture effect of the camera 4. After the face recognition is completed, the servo motor 64 drives the camera 4 again. The four-pronged pawl 65 drives the pulley assembly 66 to rotate in the forward direction. At this time, the cam plate 68 remains stationary, and the reciprocating screw 62 continues to rotate. The sliding frame 63 slides onto the surface of the reciprocating screw 62 towards the inside of the storage compartment 61, thus storing the camera 4. As the sliding frame 63 slides, it also pulls the steel wire rope 73 to traction the protective plate 72. This causes the two protective plates 72 to slide stably towards each other under the action of the guide post 74, thus blocking the opening surface of the storage compartment 61 and protecting the camera 4 from scratches and impacts. Simultaneously, the inserts and slots on the opposite sides of the two anti-slip plates ensure a tighter connection between the two protective plates 72, further enhancing their protective function. As the sliding frame 63, along with the camera 4, gradually slides out of the storage compartment 61, the traction of the steel wire rope 73 on the protective plate 72 gradually loosens. Consequently, under the reaction force of the spring 75, the protective plate 72 gradually retracts into the frame 71, thus achieving automatic opening and closing of the protective plate 72. During the sliding process of the protective plate 72, the rubber scraper 77 can clean the protective plate 72, thereby preventing the protective plate 72 from being contaminated by daily dirt, which could lead to corrosion and affect its appearance. At the same time, a clean protective plate 72 can improve the user experience. During the cleaning process of the rubber scraper 77, the reaction force of the spring 78 causes the rubber scraper 77 to press firmly against the surface of the protective plate 72, thereby further improving the cleaning effect.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A passenger elevator face recognition device comprising a body (1), characterized in that: The body (1) is provided with a display screen (2), a magnetic card identification area (3) and a light supplement lamp (5) on one side, and a receiving structure (6) is installed on the top of the body (1), a camera (4) is installed on the middle of the receiving structure (6), a protection structure (7) is installed on the outside of the receiving structure (6), the receiving structure (6) comprises a receiving bin (61) opened on the top of the body (1), two reciprocating lead screws (62) are rotatably connected inside the receiving bin (61), a belt pulley set two (67) is jointly installed on one end of the two reciprocating lead screws (62), a sliding frame (63) is threadedly connected to the outer wall of the two reciprocating lead screws (62), and a rotating plate (613) is rotatably connected inside the sliding frame (63).

2. The passenger elevator face recognition device according to claim 1, characterized in that: A cam plate (68) is rotatably connected to one side of the receiving bin (61), traction ropes (69) are fixedly connected to the end of the cam plate (68) away from the rotating axis, and the traction ropes (69) are fixedly connected to the bottom end of the rotating plate (613) away from the camera (4).

3. The passenger elevator face recognition device according to claim 1, characterized in that: A magnetic attraction block one (614) is fixedly connected to the side of the rotating plate (613) away from the camera (4), a magnetic attraction block two (615) is installed on the top of the sliding frame (63), and the opposite surfaces of the magnetic attraction block one (614) and the magnetic attraction block two (615) are in a repelling state.

4. The passenger elevator face recognition device according to claim 1, characterized in that: Arc grooves (612) are formed in the top end and the bottom end of the sliding frame (63), and the inner wall of the arc groove (612) is attached to the edge of the rotating plate (613).

5. The passenger elevator face recognition device according to claim 2, characterized in that: A mounting rack is fixedly connected to the side of the body (1) away from the display screen (2), a servo motor (64) is installed in the middle of the mounting rack, a four-pronged claw (65) is fixedly connected to the output end of the servo motor (64), a belt pulley set one (66) is installed on one end of the four-pronged claw (65), a one-way bearing one (610) and a one-way bearing two (611) are respectively installed in the middle of the two belt pulleys of the belt pulley set one (66), the middle of the one-way bearing one (610) is fixedly connected to the end of one reciprocating lead screw (62), and the middle of the one-way bearing two (611) is fixedly connected to the end of the cam plate (68) away from the traction rope (69).

6. The passenger elevator face recognition device according to claim 1, characterized in that: The protection structure (7) comprises two clamping frames (71) fixedly connected to one side of the body (1), the two clamping frames (71) are equidistantly and symmetrically arranged on the upper and lower sides of the receiving bin (61), the opposite surfaces of the two clamping frames (71) are fixedly connected with two guide columns (74), the outer walls of the guide columns (74) located at the upper and lower positions are slidably connected with protection plates (72), and the side of the sliding frame (63) away from the traction rope (69) is fixedly connected with two groups of steel wires (73) arranged above and below.

7. The passenger elevator face recognition device according to claim 6, characterized in that: The opposite faces of the two protective plates (72) are respectively provided with an insertion block and an insertion slot, the size and shape of the outer wall of the insertion block are matched with the size and shape of the inner wall of the insertion slot.

8. The passenger elevator face recognition device according to claim 6, characterized in that: The outer wall of all the guide columns (74) is sleeved with a spring (75), and the two ends of the spring (75) are respectively fixedly connected with one end of the guide column (74) and one side in the interior of the protective plate (72).

9. The passenger elevator face recognition device according to claim 6, characterized in that: The clamping frame (71) is fixedly connected with a sliding rod (76) on one side close to the protective plate (72), one end of the sliding rod (76) is slidingly connected with a rubber scraper (77), and one side of the rubber scraper (77) abuts against one side of the protective plate (72).

10. The passenger elevator face recognition device according to claim 9, characterized in that: The end of the sliding rod (76) is sleeved with a spring (78), and the two ends of the spring (78) are respectively fixedly connected with one side of the rubber scraper (77) and one side of the clamping frame (71).

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