Screen voice control device capable of realizing voiceprint recognition and interference prevention

Abstract

The invention relates to the technical field of screen voice control, in particular to a voiceprint recognition anti-interference screen voice control device which comprises an outer shell and a mainboard installed in the outer shell. Mounting frames are mounted below the three groups of microphones on the left side and the right side, and the two microphones on the front side and the rear side are directly mounted in the mounting frames; three groups of guide limiting rods are mounted in the mounting frame, and the left and right ends of the guide limiting rods penetrate through the interiors of the lower parts of the three groups of mounting racks on the left and right sides respectively. According to the voiceprint recognition anti-interference voice control device for the screen, the plurality of microphones can be gathered near the position of the sound source, so that the interference of sounds in other directions can be reduced, the voice control device for the screen can better collect the sounds needing voiceprint recognition, the voiceprint recognition is prevented from being interfered by other sounds, and the voice control efficiency is improved. And thus, purer sound needing voiceprint recognition can be obtained, and the accuracy of later voiceprint recognition can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of voice control for screens, and in particular to a voice control device for screens capable of voiceprint recognition and anti-interference. Background Art

[0002] At present, in some devices with screens, by using voice control devices, users can control the screens by voice, which is convenient for changing the content displayed on the screen, thereby improving the convenience and efficiency of human-computer interaction. The patent name disclosed in the prior art with application number "CN201310146779.3" is "A method and device for controlling a large screen with voice", which discloses that a user wants to "search" some content through a large screen, and the user speaks a voice with the word "search" to a mobile terminal, and the mobile terminal records the user's voice, and recognizes and parses it through a recognition module (a third-party voice recognition development kit is used here) to obtain a character string, and then compares the character strings to generate control command information that can be recognized by the large screen end, and generates a control command information flow chart that can be recognized by the large screen end for the mobile terminal, the mobile terminal determines whether the character string information starts with "search"; if so, generates search content command information; otherwise, the client determines whether the character string information starts with "play"; if so, generates play command information; otherwise, the client continues to determine whether the character string information starts with other control information, until the remaining character strings cannot match the relevant commands; finally, the client generates unrecognizable commands for the remaining character strings that cannot match the relevant commands; The patent name disclosed in the prior art with application number "CN201820320698.9" is "A voice control terminal with a display screen", which discloses that a display panel is installed on the front surface of the host, and the display panel is electrically connected to the control mainboard inside the host; a fixed bracket is installed on the back of the host, and the fixed bracket makes the display panel form an angle α with the horizontal plane L; a display screen is installed in the middle of the display panel, a camera assembly is installed on the upper part of the plane where the display screen is located, and a microphone input port is installed below the plane where the display screen is located. The number of microphones is at least 2, and the center point connection line of the microphones is a straight line, and the straight line is parallel to the horizontal plane L, and the front surface of the display panel is equipped with a transparent glass panel; Although the voice control device for the screen mentioned above can perform voice control on the screen well through the use of a microphone, since the installation position of the microphone is fixed, when the sound source of the user's voice is far away from some microphones, some microphones may collect other surrounding sounds into the voice control device. This will cause other surrounding sounds to interfere with the subsequent voiceprint recognition work, thereby resulting in low accuracy of the subsequent voiceprint recognition, thereby affecting the use of the voice control device for the screen.

[0003] Therefore, we propose a voice control device for a screen that can recognize voiceprints and prevent interference, so as to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a voice control device for screens that can perform voiceprint recognition and prevent interference, so as to solve the problem raised in the above background technology that some microphones on the market may collect other surrounding sounds into the voice control device, which will cause other surrounding sounds to interfere with the subsequent voiceprint recognition work, and then lead to low accuracy of the subsequent voiceprint recognition, thereby affecting the use of the voice control device for the screen.

[0005] To achieve the above object, the present invention provides the following technical solution: a voice control device for a screen capable of voiceprint recognition and anti-interference, comprising an outer shell, and a mainboard installed inside the outer shell; A network interface is installed on the upper front side of the mainboard, and the front end of the network interface passes through the front side of the outer shell; A mounting frame is installed on the upper left side of the mainboard; A circle of microphones is distributed in a circular array in the groove on the upper surface of the installation frame; The three microphones on the left and right sides are installed with mounting frames below them, and the two microphones on the front and back sides are directly installed in the mounting frames; Three sets of guide limit rods are installed inside the installation frame, and the left and right ends of the guide limit rods respectively penetrate the lower interior of the three sets of installation frames on the left and right sides, and a guide limit rod is arranged above the control plate; The three sets of mounting brackets on the left and right sides are equipped with control panels for controlling the movement of the microphones; An analog-to-digital converter and a processor are installed on the upper right side of the mainboard in sequence from front to back; The memory is installed on the upper rear side of the mainboard; A sound inlet hole is provided inside the upper surface of the outer shell.

[0006] Preferably, both sides of the regulating plate are arranged in an inclined shape, and the outer side of the middle part of the regulating plate is connected to the inner wall of the mounting frame through an electric telescopic rod.

[0007] Through the arrangement of the above structure, the control panels arranged in an inclined shape on both sides are well connected with the mounting frames under the three groups of microphones.

[0008] Preferably, mounting columns are installed on the bottom surfaces of the left and right sides of the mounting frame, and the lower ends of the mounting columns are connected to the mainboard; The microphone is electrically connected to the mainboard.

[0009] Through the arrangement of the above structure, there is a distance between the installation frame and the main board, which facilitates the installation of the installation frame.

[0010] Preferably, the processor includes a voiceprint recognition module, a voiceprint comparison module and a command recognition module, and a screen operation module is installed on the mainboard.

[0011] Preferably, the mounting frame is arranged in a "U"-shaped structure, and the mounting frame forms a sliding structure with the mounting frame through a guide limit rod; The number of mounting brackets and the number of guide limit rods are arranged in a ratio of 2:1.

[0012] The above-mentioned structure is arranged to ensure that the mounting frames on the left and right sides can stably slide on the guide limit rods.

[0013] Preferably, a microphone is arranged below the sound inlet holes, and the sound inlet holes are arranged in a circular shape.

[0014] Through the arrangement of the above structure, the microphone can collect external sounds well by cooperating with the sound inlet hole.

[0015] Preferably, the microphone, analog-to-digital converter, processor and memory are electrically connected.

[0016] Preferably, the mounting frame is connected to the bottom of the microphone via a rotating rod, and the microphone forms a rotating structure with the mounting frame via the rotating rod; A vortex spring is nested and connected to the outer side of one end of the rotating rod, and the other end of the vortex spring is connected to the inner wall of the mounting frame; Through the arrangement of the above structure, the vortex spring can store force to drive the rotating rod to rotate in the opposite direction in the later stage, so that the rotating rod can wrap around one end of the connecting rope again to facilitate the next use.

[0017] A connecting rope is wound around the outer side of the other end of the rotating rod, and one end of the connecting rope away from the rotating rod is connected to the inner wall of the installation frame.

[0018] Through the arrangement of the above structure, when the connecting rope is pulled, the rotating rod can be driven to rotate without using an additional power source, thus saving energy.

[0019] Preferably, the length of the end of the connecting rope away from the rotating rod is greater than the distance between the left mounting bracket and the left inner wall of the mounting frame.

[0020] The above-mentioned structure can be used to reserve a certain length for the connecting rope, so as to prevent the microphone from rotating and tilting too much and affecting its subsequent use.

[0021] Preferably, a connecting rod in a "Z"-shaped structure is symmetrically installed above the regulating plate, and the upper end of the connecting rod is connected to the cover plate; Through the arrangement of the above structure, when the regulating plate moves, the cover plate is driven to move together through the connecting rod, without the need for an additional power source.

[0022] The cover plate is arranged in an arc-shaped structure, the upper surface of the cover plate is fitted with the upper inner wall of the outer shell, and the cover plate moves synchronously with the regulating plate.

[0023] Through the arrangement of the above structure, the cover plate can later cover and seal part of the sound inlet holes, so that other external sounds cannot enter the voice control device through part of the sound inlet holes.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the voice control device for screen capable of voiceprint recognition and anti-interference can gather multiple microphones near the sound source position, thereby reducing the interference of sounds from other directions, so that the voice control device for screen can better collect the sound that needs to be voiceprint recognized, avoid the interference of other sounds in voiceprint recognition, and then help to obtain a purer sound that needs to be voiceprint recognized, which can improve the accuracy of later voiceprint recognition. The specific contents are as follows: (1) A plurality of microphones distributed in a circular array are provided to capture sounds from different directions and effectively distinguish the location of the sound source. Then, the control panel is driven to move by the electric telescopic rod, so that the control panel can drive the microphones far away from the sound source to move toward the sound source, and then multiple microphones can be gathered near the sound source, thereby reducing the interference of sounds from other directions, so that the voice control device for the screen can better collect the sounds required for voiceprint recognition, avoid the interference of other sounds on the voiceprint recognition, and then help to obtain purer sounds required for voiceprint recognition, which can improve the accuracy of later voiceprint recognition; The microphone and the processor are used together so that the voice control device can calculate the time difference and intensity difference between different microphones receiving the sound, so as to accurately determine the source direction of the sound, and facilitate the adjustment of the position of the microphone far away from the sound source at a later stage; (2) When adjusting the position of the microphone far from the sound source, the mounting bracket moves to pull the connecting rope, which in turn drives the rotating rod to rotate, and the rotating rod drives the microphone to rotate, so that the microphone, which is tilted after rotation, can be closer to the sound source, so that the microphone can collect the sound required for voiceprint recognition. When some microphones move in the reverse direction to reset in the later stage, the stored force of the vortex spring can automatically drive the rotating rod to rotate in the reverse direction, thereby causing the rotating rod to drive the microphone to rotate in the reverse direction to reset; The control board can drive three microphones to move together at the same time. The stable movement of the microphones can be ensured by sliding the mounting frame on the outside of the guide limit rod. (3) When the control board drives the corresponding microphone to move toward the sound source, the control board drives the arc-shaped cover plate to move together through the connecting rod, so that the cover plate can cover part of the sound inlet hole. Therefore, the external sound source can only enter the outer shell through the other part of the sound inlet hole close to the sound source, thereby preventing other external sounds from entering the outer shell through the sound inlet hole, and further preventing the voiceprint recognition from being interfered with by other sounds. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the main cross-sectional structure of the outer shell of the present invention; Figure 3 It is a schematic diagram of the top cross-sectional structure of the outer shell of the present invention; Figure 4 This is a bottom view of the structure of the outer shell and the main board separated from each other in the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the installation frame of the present invention; Figure 6 This is a bottom view of the structure of the installation frame of the present invention; Figure 7 This is a schematic diagram of the structure in which the mounting frame and the microphone are separated according to the present invention; Figure 8 This is a schematic diagram of the connection structure between the control panel and the mounting frame of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the mounting frame of the present invention; Fig.10 This is a schematic diagram of the connection structure between the cover plate and the control plate of the present invention; Fig.11 This is the overall voice control flow chart of the present invention; Fig.12 The figure is a flowchart of the processor of the present invention.

[0026] In the figure: 1. outer shell; 2. network interface; 3. sound inlet; 4. main board; 5. mounting frame; 6. microphone; 7. analog-to-digital converter; 8. processor; 9. cover plate; 10. connecting rod; 11. mounting column; 12. memory; 13. mounting frame; 14. guide limit rod; 15. control board; 16. connecting rope; 17. electric telescopic rod; 18. rotating rod; 181. vortex spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 12 , the present invention provides the following technical solutions: Embodiment 1: The voice control device for screen with voiceprint recognition and anti-interference in this embodiment can prevent interference from other sounds during the voiceprint recognition process, thereby improving the accuracy of subsequent voiceprint recognition. For specific structure, please refer to the attached Figure 1-Figure 8 And attached Figure 11-Figure 12 As shown, it includes an outer shell 1, and a mainboard 4 installed inside the outer shell 1; a network interface 2 is installed on the upper front side of the mainboard 4, and the front end of the network interface 2 passes through the front side of the outer shell 1; a mounting frame 5 is installed on the upper left side of the mainboard 4; a circle of microphones 6 are distributed in a ring array in the groove on the upper surface of the mounting frame 5, and mounting frames 13 are installed below the three groups of microphones 6 on the left and right sides, and the two microphones 6 on the front and back sides are directly installed in the mounting frame 5, and three groups of guide limit rods 14 are installed inside the mounting frame 5, and a guide limit rod 14 is arranged above the control board 15. The left and right ends of the guide limit rod 14 respectively penetrate the lower interior of the three groups of mounting frames 13 on the left and right sides, and the outer sides of the three groups of mounting frames 13 on the left and right sides are installed with control panels 15 for controlling the movement of the microphone 6. The upper right side of the main board 4 is installed with an analog-to-digital converter 7 and a processor 8 from front to back, and a memory 12 is installed on the upper rear side of the main board 4. A sound inlet hole 3 is opened inside the upper surface of the outer shell 1, and the two sides of the control panel 15 are arranged in an inclined shape. The middle outer side of the control panel 15 is connected to the inner wall of the mounting frame 5 through an electric telescopic rod 17.

[0029] Mounting columns 11 are installed on the bottom surfaces of the left and right sides of the mounting frame 5, the lower ends of the mounting columns 11 are connected to the mainboard 4, the microphone 6 is electrically connected to the mainboard 4, the processor 8 includes a voiceprint recognition module, a voiceprint comparison module and a command recognition module, the mainboard 4 is installed with a screen operation module, the mounting frame 13 is arranged in a "U" shape, the mounting frame 13 forms a sliding structure with the mounting frame 5 through a guide limit rod 14, the number of the mounting frames 13 and the number of the guide limit rods 14 are arranged in a ratio of 2:1, a microphone 6 is arranged below the sound inlet 3, the sound inlet 3 is arranged in a circular shape, and the microphone 6, the analog-to-digital converter 7, the processor 8 and the memory 12 are electrically connected.

[0030] First, the voice control device is installed on the device that needs to automatically control the screen in an internal or external manner, and then the external power supply is connected, and the entire voice control device can be used. When in use, the user can first record his voiceprint into the memory 12 through the voiceprint recording module in the voice control device, and then the next time the voice control device is used, the user speaks the sound that needs the voice control device to perform voiceprint recognition. At this time, the sound spoken by the user enters the voice control device through the sound inlet 3, and then a plurality of microphones 6 distributed in a circular array collect the sound that needs to be recognized by the voiceprint. Since the plurality of microphones 6 are evenly distributed on a circle, this layout helps to collect sound signals from multiple directions, and then the analog-to-digital converter 7 converts the sound collected by the microphone 6 into a digital signal, and then the analog-to-digital converter 7 transmits the digital signal to the processor 8. At this time, the processor 8 accurately determines the source direction of the sound by calculating the time difference and intensity difference of the sound received by different microphones 6.

[0031] If the source direction of the sound is on the right side of the microphone 6, the processor 8 controls the start of the electric telescopic rod 17 on the left side of the installation frame 5 through the control module, and then the output end of the electric telescopic rod 17 drives the left control plate 15 to move to the right. At this time, the left control plate 15 drives the three groups of microphones 6 to move stably to the right outside the guide limit rod 14, and moves the three groups of microphones 6 to a position close to the sound source. At this time, the electric telescopic rod 17 is stopped, and then multiple microphones 6 can be gathered near the sound source position. Therefore, multiple microphones 6 can collect the sound at the sound source position well, thereby reducing the collection of sounds from other directions and reducing interference from other sounds, thereby improving the accuracy of sound collection and avoiding interference with voiceprint recognition in the later stage.

[0032] Then the analog-to-digital converter 7 converts the sound collected by the microphone 6 into a digital signal again, and then the analog-to-digital converter 7 transmits the digital signal to the processor 8. At this time, the processor 8 recognizes the voiceprint through the internal voiceprint recognition module, and then compares it with the stored voiceprint in the memory 12 through the voiceprint comparison module. During the comparison process, a specific matching algorithm will be used, such as the dynamic time warping DTW algorithm or the algorithm based on the Gaussian mixture model-universal background model GMM-UBM, etc. These algorithms will calculate the similarity between the extracted voiceprint features and the pre-stored voiceprint feature template. If the voiceprint match is successful, it indicates that the person who issued the voice command is a legitimate user. The command recognition module in the voice control device will further recognize the command content of the voice, and then automatically operate the screen through the screen operation module. Therefore, the entire voice control device can well control the screen through voice without manual operation. This part is the existing technology and will not be introduced in detail here.

[0033] If the source direction of the sound is on the left side of the microphone 6, the processor 8 controls the start of the electric telescopic rod 17 on the right side of the installation frame 5 through the control module, and then the output end of the electric telescopic rod 17 drives the right control plate 15 to move to the left. At this time, the left control plate 15 drives the three groups of microphones 6 to move stably to the left on the outside of the guide limit rod 14, and then as shown above, the same operation can be performed, and multiple microphones 6 can be well gathered near the sound source position, so that multiple microphones 6 can collect the sound at the sound source position well, thereby reducing the collection of sounds in other directions and reducing interference from other sounds.

[0034] Embodiment 2: In this embodiment, the voice control device for screen with voiceprint recognition and anti-interference can further prevent interference from other sounds by tilting part of the microphone 6 during the voiceprint recognition process, thereby further improving the accuracy of the subsequent voiceprint recognition. For the specific structure, please refer to the attached Figure 5-Figure 9 As shown, on the basis of Example 1, the mounting bracket 13 is connected to the bottom of the microphone 6 through the rotating rod 18, and the microphone 6 forms a rotating structure with the mounting bracket 13 through the rotating rod 18; a vortex spring 181 is nested and connected to the outside of one end of the rotating rod 18, and the other end of the vortex spring 181 is connected to the inner wall of the mounting bracket 13; the other end of the rotating rod 18 is wrapped with a connecting rope 16, and the end of the connecting rope 16 away from the rotating rod 18 is connected to the inner wall of the mounting frame 5, and the length of the end of the connecting rope 16 away from the rotating rod 18 is greater than the distance between the left mounting bracket 13 and the left inner wall of the mounting frame 5.

[0035] When the left control plate 15 drives the three groups of microphones 6 to move to the right, or when the right control plate 15 drives the three groups of microphones 6 to move to the left, the moving microphone 6 first pulls one end of the connection rope 16 with a certain length reserved. When one end of the connection rope 16 with a certain length reserved is straightened, the microphone 6 continues to move. At this time, the connection rope 16 is pulled, so that the other end of the connection rope 16 wrapped around the outside of the rotating rod 18 is pulled. At this time, the connecting rope 16 drives the rotating rod 18 to rotate, and the vortex spring 181 on the outside of the rotating rod 18 accumulates force. Then the rotating rod 18 drives part of the microphones 6 to rotate, so that part of the microphones 6 are inclined close to the sound source position. Since part of the microphones 6 are inclined, part of the microphones 6 are closer to the sound source position, and then the distance between part of the microphones 6 and the sound source position can be further shortened. Therefore, the coordinated use of multiple microphones 6 can well collect the sound at the sound source position and avoid collecting the sound at other positions, thereby further preventing interference with the later voiceprint recognition.

[0036] Embodiment 3: The voice control device for screen with voiceprint recognition and anti-interference in this embodiment can further prevent other sounds from entering the voice control device by covering part of the sound inlet hole 3, thereby further preventing interference from other sounds, and further improving the accuracy of later voiceprint recognition. For details, please refer to the attached Figure 2 and attached Figure 5-Figure 6 And attached Fig.10 As shown, on the basis of the first embodiment, a connecting rod 10 with a "Z"-shaped structure is symmetrically installed above the regulating plate 15, and the upper end of the connecting rod 10 is connected to the cover plate 9, and the cover plate 9 is arranged in an arc structure. The upper surface of the cover plate 9 is in contact with the upper inner wall of the outer shell 1, and the cover plate 9 moves synchronously with the regulating plate 15. When the left regulating plate 15 drives the three groups of microphones 6 to move to the right, or the right regulating plate 15 drives the three groups of microphones 6 to move to the left, the regulating plate 15 will drive the arc-shaped cover plate 9 to move together through the connecting rod 10. At this time, the cover plate 9 gradually moves toward the direction of the sound inlet 3, and then the cover plate 9 is fitted and sealed to the sound inlet 3 that is partly away from the sound source position, so that other sounds far away from the sound source position cannot enter the voice control device through the sound inlet 3 that is partly away from the sound source position, thereby further avoiding the interference of other sounds on the voiceprint recognition, so that the entire voice control device can recognize the voiceprint well, thereby completing a series of tasks.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A voice control device for a screen capable of voiceprint recognition and anti-interference, comprising an outer shell (1), and a mainboard (4) installed inside the outer shell (1); A network interface (2) is installed above the front side of the mainboard (4), and the front end of the network interface (2) penetrates the front side of the outer shell (1); A mounting frame (5) is mounted on the upper left side of the main board (4); Features: A circle of microphones (6) are distributed in a ring array in the groove on the upper surface of the installation frame (5); A mounting frame (13) is installed below the three groups of microphones (6) on the left and right sides, and the two microphones (6) on the front and rear sides are directly installed in the mounting frame (5); Three sets of guide limit rods (14) are installed inside the installation frame (5), and the left and right ends of the guide limit rods (14) respectively penetrate the lower interior of the three sets of installation frames (13) on the left and right sides; The outer sides of the three groups of mounting frames (13) on the left and right sides are each installed with a control plate (15) for controlling the movement of the microphone (6), and a guide limit rod (14) is arranged above the control plate (15); An analog-to-digital converter (7) and a processor (8) are installed in sequence from front to back on the upper right side of the mainboard (4); A memory (12) is installed on the upper rear side of the main board (4); A sound inlet hole (3) is provided inside the upper surface of the outer shell (1).

2. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 1, characterized in that: The two sides of the regulating plate (15) are arranged in an inclined shape, and the outer side of the middle part of the regulating plate (15) is connected to the inner wall of the installation frame (5) through an electric telescopic rod (17).

3. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 1, characterized in that: The bottom surfaces of the left and right sides of the installation frame (5) are both provided with installation columns (11), and the lower ends of the installation columns (11) are connected to the main board (4); The microphone (6) is electrically connected to the main board (4).

4. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 1, characterized in that: The processor (8) includes a voiceprint recognition module, a voiceprint comparison module and a command recognition module, and a screen operation module is installed on the mainboard (4).

5. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 1, characterized in that: The mounting frame (13) is arranged in a "U"-shaped structure, and the mounting frame (13) forms a sliding structure with the mounting frame (5) via a guide limit rod (14); The number of the mounting frames (13) and the number of the guide limit rods (14) are arranged in a ratio of 2:

1.

6. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 1, characterized in that: A microphone (6) is arranged below the sound inlet holes (3), and the sound inlet holes (3) are arranged in a circular shape.

7. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 1, characterized in that: The microphone (6), the analog-to-digital converter (7), the processor (8) and the memory (12) are electrically connected.

8. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 1, characterized in that: The mounting frame (13) is connected to the bottom of the microphone (6) via a rotating rod (18), and the microphone (6) forms a rotating structure with the mounting frame (13) via the rotating rod (18); A vortex spring (181) is nested and connected to the outside of one end of the rotating rod (18), and the other end of the vortex spring (181) is connected to the inner wall of the mounting frame (13); A connecting rope (16) is wound around the outside of the other end of the rotating rod (18), and one end of the connecting rope (16) away from the rotating rod (18) is connected to the inner wall of the installation frame (5).

9. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 8, characterized in that: The length of the end of the connecting rope (16) away from the rotating rod (18) is greater than the distance between the left mounting frame (13) and the left inner wall of the mounting frame (5).

10. The voice control device for screen capable of voiceprint recognition and anti-interference according to claim 1, characterized in that: A connecting rod (10) in a "Z"-shaped structure is symmetrically mounted above the regulating plate (15), and the upper end of the connecting rod (10) is connected to the cover plate (9); The cover plate (9) is arranged in an arc-shaped structure, the upper surface of the cover plate (9) is in contact with the upper inner wall of the outer shell (1), and the cover plate (9) and the regulating plate (15) move synchronously.

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