Facial expression recognition device

Abstract

The utility model discloses a recognition device for facial expressions, which comprises a vertical plate, a lifting device is arranged on the back of the vertical plate, and the lifting device drives a lifting plate to lift; a rotary table is arranged at the upper end of the lifting plate, a first rotary motor is rotationally installed in the middle of the rotary table, a rotary disc is arranged at the upper end of the first rotary motor, and a U-shaped frame is fixedly installed at the upper end of the rotary disc; and an identification camera is arranged in the U-shaped frame, rotating shafts are arranged on the two sides of the identification camera, the rotating shafts are rotationally installed on the two sides of the U-shaped frame, and the identification camera is driven by a second rotating motor to rotate. According to the utility model, the height of the identification camera can be adjusted through the lifting device, the identification camera is driven to rotate transversely through the first rotating motor, the identification camera is driven to rotate longitudinally through the second rotating motor, and the identification camera is more flexible through rotation control and lifting control of the identification camera in two directions; and the recognition camera can conveniently carry out facial expression recognition on the human face.

Description

Technical Field

[0001] The utility model relates to the technical field of human facial expression recognition, in particular to a device for recognizing human facial expressions. Background Art

[0002] Facial expressions are an important channel for interpersonal communication. Recognizing facial expressions can promote the understanding of people's psychological state and emotions. Different from conventional facial expressions, micro-expressions are a special type of small facial movements that can be used as an important basis for judging people's subjective emotions. They have broad application value in the fields of public security and psychotherapy. When analyzing facial expressions, facial expressions need to be collected through recognition cameras.

[0003] A Chinese new utility model patent with announcement number CN 217213757 U discloses a device for recognizing facial expressions, comprising a second support rod, a fill light structure being provided on the second support rod, the fill light structure comprising a connecting rod, the second support rod abutting against the connecting rod, a card plate being engaged on the connecting rod, a first screw being threadedly connected to the card plate, the first screw being rotatably connected to the abutment plate, the abutment plate abutting against the second support rod, a lighting lamp being fixedly connected to the connecting rod, two card slots being provided on the connecting rod, a recognition camera being fixedly connected to the second support rod, and a rotating rod being fixedly connected to the first screw rod; when the ambient light is dark during the collection process, fill light can be provided by the lighting lamp, so that the facial expression collection is clearer, the subsequent analysis results are more accurate, and the lighting lamp is convenient for quick disassembly and assembly, transportation and storage. With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the recognition camera only has the function of lifting and lowering, but cannot be rotated in multiple directions, resulting in the recognition camera being not flexible enough and unable to better recognize facial expressions, and the recognition camera needs to be raised and lowered by a hand crank, which is not convenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a device for recognizing facial expressions to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for recognizing facial expressions, comprising a vertical plate, a lifting device is provided on the back of the vertical plate, the lifting device comprises a screw rod and a lifting plate, the screw rod is rotatably mounted on the back of the vertical plate, the screw rod is driven to rotate by a lifting motor, and the lifting plate is driven to rise and fall by the screw rod;

[0006] A turntable is provided at the upper end of the lifting plate, a first rotating motor is rotatably installed in the middle of the turntable, a turntable is provided at the upper end of the first rotating motor, and a U-shaped frame is fixedly installed at the upper end of the turntable;

[0007] An identification camera is arranged inside the U-shaped frame, and rotating shafts are arranged on both sides of the identification camera. The rotating shafts are rotatably mounted on both sides of the U-shaped frame, and the identification camera is driven to rotate by a second rotating motor.

[0008] Preferably, an upper fixing plate and a lower fixing plate are provided on the back of the vertical plate, and the screw rod is rotatably mounted on the upper fixing plate and the lower fixing plate.

[0009] Preferably, a lifting block is provided at the lower end of the lifting plate, and the lifting block is threadedly connected to the screw rod.

[0010] Preferably, a through slot matching the upper fixing plate is provided in the middle of the lifting plate, and the upper fixing plate passes through the through slot.

[0011] Preferably, a guide rail is provided in the middle of the back side of the vertical plate, and the guide rail is located between the upper fixed plate and the lower fixed plate, and a slider matching the guide rail is provided at the lower end of the front side of the lifting plate, and the slider is slidably connected to the guide rail.

[0012] Preferably, lighting strips are provided around the front of the recognition camera.

[0013] Preferably, a bottom plate is provided at the lower end of the vertical plate, and four sets of universal wheels are provided at the lower end of the bottom plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can adjust the height of the recognition camera through the lifting device, drive the recognition camera to rotate horizontally through the first rotating motor, and drive the recognition camera to rotate longitudinally through the second rotating motor. Through the rotation control and lifting control of the recognition camera in two directions, the recognition camera is made more flexible, which is convenient for the recognition camera to recognize facial expressions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 It is a front view of the utility model;

[0019] Figure 4 It is a side view of the utility model.

[0020] In the figure: 1. vertical plate; 2. bottom plate; 3. universal wheel; 4. lower fixed plate; 5. upper fixed plate; 6. screw rod; 7. lifting motor; 8. lifting plate; 9. lifting block; 10. turntable; 11. through groove; 12. guide rail; 13. slider; 14. turntable; 15. U-shaped frame; 16. identification camera; 17. second rotating motor; 18. lighting strip; 19. first rotating motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a device for recognizing facial expressions, comprising a vertical plate 1, a bottom plate 2 is disposed at the lower end of the vertical plate 1, and four sets of universal wheels 3 are disposed at the lower end of the bottom plate 2.

[0023] A lifting device is provided on the back of the vertical plate 1, and the lifting device includes a screw rod 6 and a lifting plate 8. The screw rod 6 is rotatably mounted on the back of the vertical plate 1, and the screw rod 6 is driven to rotate by the lifting motor 7, and the lifting plate 8 is driven to rise and fall by the screw rod 6;

[0024] An upper fixing plate 5 and a lower fixing plate 4 are provided on the back of the vertical plate 1 , and a screw rod 6 is rotatably mounted on the upper fixing plate 5 and the lower fixing plate 4 .

[0025] A lifting block 9 is provided at the lower end of the lifting plate 8 , and the lifting block 9 is threadedly connected to the screw rod 6 .

[0026] A through slot 11 matching with the upper fixing plate 5 is provided in the middle of the lifting plate 8 , and the upper fixing plate 5 passes through the through slot 11 .

[0027] A guide rail 12 is provided in the middle of the back of the vertical plate 1 , and the guide rail 12 is located between the upper fixed plate 5 and the lower fixed plate 4 . A slider 13 matching the guide rail 12 is provided at the lower end of the front of the lifting plate 8 , and the slider 13 is slidably connected to the guide rail 12 .

[0028] Among them, by setting the universal wheel 3, the device can be made more maneuverable, and the height of the recognition camera 16 can be adjusted by the lifting device, which is convenient for facial expression recognition. The lifting motor 7 drives the screw rod 6 to rotate, and the screw rod 6 rotates to drive the lifting block 9 and the lifting plate 8 to rise or fall. The lifting plate 8 controls the lifting and lowering of the recognition camera 16 by driving the turntable 10 to rise or fall.

[0029] A turntable 10 is provided at the upper end of the lifting plate 8, a first rotating motor 19 is rotatably installed in the middle of the turntable 10, a turntable 14 is provided at the upper end of the first rotating motor 19, and a U-shaped frame 15 is fixedly installed at the upper end of the turntable 14;

[0030] An identification camera 16 is arranged inside the U-shaped frame 15 . Rotating shafts are arranged on both sides of the identification camera 16 . The rotating shafts are rotatably mounted on both sides of the U-shaped frame 15 . The identification camera 16 is driven to rotate by a second rotating motor 17 .

[0031] An illumination light strip 18 is arranged around the front of the recognition camera 16 .

[0032] Among them, the first rotating motor 19 is used to drive the recognition camera 16 to rotate horizontally, and the second rotating motor 17 is used to drive the recognition camera 16 to rotate vertically. By controlling the rotation of the recognition camera 16 in two directions, the recognition camera 16 is made more flexible, which is convenient for the recognition camera 16 to recognize facial expressions. Turning on the lighting strip 18 can increase the light on the face, and the lighting strip 18 can rotate or rise and fall with the recognition camera 16.

[0033] The working principle and use process of this utility model:

[0034] The screw rod 6 is driven to rotate by the lifting motor 7, and the rotation of the screw rod 6 drives the lifting block 9 and the lifting plate 8 to rise or fall. The lifting plate 8 controls the lifting and lowering of the recognition camera 16 by driving the turntable 10 to rise or fall; the first rotating motor 19 is used to drive the recognition camera 16 to rotate horizontally, and the second rotating motor 17 is used to drive the recognition camera 16 to rotate longitudinally. By controlling the rotation and lifting of the recognition camera 16 in two directions, the recognition camera 16 is made more flexible, which is convenient for the recognition camera 16 to recognize facial expressions. Turning on the lighting strip 18 can increase the light on the face, and the lighting strip 18 can rotate or rise and fall with the recognition camera 16.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recognizing facial expressions, comprising a stand (1), characterized in that: A lifting device is provided on the back of the vertical plate (1), the lifting device comprising a screw rod (6) and a lifting plate (8), the screw rod (6) being rotatably mounted on the back of the vertical plate (1), the screw rod (6) being driven to rotate by a lifting motor (7), and the lifting plate (8) being driven to rise and fall by the screw rod (6); A turntable (10) is provided at the upper end of the lifting plate (8), a first rotating motor (19) is rotatably mounted in the middle of the turntable (10), a turntable (14) is provided at the upper end of the first rotating motor (19), and a U-shaped frame (15) is fixedly mounted at the upper end of the turntable (14); An identification camera (16) is provided inside the U-shaped frame (15), and rotating shafts are provided on both sides of the identification camera (16). The rotating shafts are rotatably mounted on both sides of the U-shaped frame (15), and the identification camera (16) is driven to rotate by a second rotating motor (17).

2. A facial expression recognition device according to claim 1, characterized in that: An upper fixing plate (5) and a lower fixing plate (4) are provided on the back of the vertical plate (1), and the screw rod (6) is rotatably mounted on the upper fixing plate (5) and the lower fixing plate (4).

3. The facial expression recognition device according to claim 1, characterized in that: A lifting block (9) is provided at the lower end of the lifting plate (8), and the lifting block (9) is threadedly connected to the screw rod (6).

4. The facial expression recognition device according to claim 2, characterized in that: A through slot (11) matching with the upper fixing plate (5) is provided in the middle of the lifting plate (8), and the upper fixing plate (5) passes through the through slot (11).

5. The facial expression recognition device according to claim 2, characterized in that: A guide rail (12) is provided at the middle of the back of the vertical plate (1), and the guide rail (12) is located between the upper fixed plate (5) and the lower fixed plate (4). A slider (13) matching the guide rail (12) is provided at the lower end of the front of the lifting plate (8), and the slider (13) is slidably connected to the guide rail (12).

6. The facial expression recognition device according to claim 1, characterized in that: Light strips (18) are provided around the front of the recognition camera (16).

7. The facial expression recognition device according to claim 1, characterized in that: A bottom plate (2) is provided at the lower end of the vertical plate (1), and four sets of universal wheels (3) are provided at the lower end of the bottom plate (2).

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