Noise reduction microphone applied to robot voice interaction

Abstract

The utility model relates to the field of microphones, and discloses a noise reduction microphone applied to robot voice interaction, which comprises a noise reduction shell, a microphone main body and sound absorption cotton, one surface of the noise reduction shell is provided with a group of uniformly distributed pickup holes in a penetrating manner, the microphone main body is arranged in the noise reduction shell, one surface of the microphone main body, which is provided with a wire, is deviated from the pickup holes, and the sound absorption cotton is arranged in the microphone main body. The other end of the connecting wire of the microphone body penetrates through the noise reduction shell and is located outside the noise reduction shell, a spherical groove is filled between the noise reduction shell and the microphone body, a telescopic structure is arranged on the face, away from the pickup hole, of the noise reduction shell, a swing structure is arranged on the side, away from the noise reduction shell, of the telescopic structure, and the telescopic structure and the swing structure are designed. The position and the angle of the robot can be flexibly adjusted according to the motion state of the robot in the execution process of various complex tasks, and the microphone can be dynamically matched whether the robot carries out fine operation in a narrow space or carries out rapid movement in an open field.

Description

A noise-canceling microphone for robot voice interaction Technical Field

[0001] This utility model relates to the field of microphones, specifically a noise-reducing microphone for robot voice interaction. Background Technology

[0002] In robot voice interaction systems, noise-canceling microphones are key sound acquisition components, and their performance directly affects the accuracy of speech recognition and the human-computer interaction experience. In noisy industrial environments such as factory workshops, noise-canceling microphones enable robots to accurately receive voice commands from operators, perform production operations, equipment debugging, and other tasks, thereby improving production efficiency and accuracy.

[0003] Traditional noise-canceling microphones have a relatively simple and fixed installation method, which often makes it difficult to adapt to the diverse working scenarios and complex motion states of robots. Many robots need to rotate, move or change their posture flexibly during the execution of tasks. However, existing noise-canceling microphones cannot make corresponding position and angle adjustments with the robot's movement, resulting in the microphones being unable to effectively collect sound in certain postures and being highly susceptible to environmental noise interference, which seriously affects the voice interaction effect. To address this, we propose a noise-canceling microphone for robot voice interaction. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a noise-reducing microphone for robot voice interaction, thus solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a noise-reducing microphone for robot voice interaction, comprising a noise-reducing shell, a microphone body, and sound-absorbing cotton. A set of evenly distributed pickup holes are opened through one side of the noise-reducing shell. The microphone body is installed inside the noise-reducing shell. The side of the microphone body with wiring faces away from the pickup holes. The other end of the wiring of the microphone body passes through the noise-reducing shell and is located outside the noise-reducing shell. A spherical groove is filled between the noise-reducing shell and the microphone body. The side of the noise-reducing shell facing away from the pickup holes is provided with a telescopic structure, and the side of the telescopic structure facing away from the noise-reducing shell is provided with a swinging structure.

[0006] Preferably, a ribbon cable is fixedly connected to the side of the noise-reducing housing opposite to the pickup hole, and one open end of the ribbon cable is fixedly connected to the noise-reducing housing. The wiring of the microphone body passes through the cylindrical surface of the ribbon cable and extends to the outside of the ribbon cable.

[0007] Preferably, the telescopic structure includes a bellows, a slider, a sliding hole, and a C-shaped sliding rod. One open end of the bellows is fixedly connected to the side of the cable conduit facing away from the noise-reducing housing. A C-shaped sliding rod is fixedly connected to the side of the cable conduit connected to the bellows. The two ends of the two symmetrical folds of the C-shaped sliding rod are fixedly connected to the cable conduit. Another C-shaped sliding rod is fixedly connected to the side of the bellows opposite to the opening. The two ends of the two symmetrical folds of the C-shaped sliding rod are fixedly connected to the bellows. A sliding hole is provided through the center of one side of the slider. Two sliders are slidably connected to the middle fold of each C-shaped sliding rod. The sliding hole is slidably connected to the C-shaped sliding rod.

[0008] Preferably, the telescopic structure further includes a hinge rod, a groove, a connecting rod, and hinge holes. The slider has grooves on the side facing away from the cable conduit, and grooves on the side of the slider opposite to the opening of the corrugated pipe. A hinge rod is fixedly connected between the two side walls of the groove, with both ends of the hinge rod fixedly connected to the groove. The axis of the hinge rod is perpendicular to the axis of the C-shaped slide rod. One side of the connecting rod has three hinge holes arranged in a straight line, with the center of the middle hinge hole coinciding with the center of the connecting rod, and the centers of the two side hinge holes about... The connecting rods are symmetrically positioned around the center and close to the edge. The hinged rods on the cable conduit are all hinged to the connecting rods. The hinged hole at one end of the connecting rod is hinged to the hinged rod. The center lines of the hinged holes in the middle of the two connecting rods coincide. These two hinged holes are hinged together by a hinge shaft. The hinged holes at the other end of the two connecting rods are respectively hinged to the hinged holes at one end of the other two connecting rods by a hinge shaft. The hinged holes in the middle of the two connecting rods are hinged together by a hinge shaft. The hinged holes at the other end of the two connecting rods are respectively hinged to the hinged rods on the corrugated pipe.

[0009] Preferably, the swing structure includes a spherical protrusion and a swing rod, the side of the corrugated pipe facing away from the cable conduit is fixedly connected to the swing rod, and the end of the swing rod facing away from the corrugated pipe is fixedly connected to the spherical protrusion.

[0010] Preferably, the swing structure further includes a mounting base, a spherical groove, a magnetic block, and a tapered cut. The tapered cut is provided on one side of the mounting base, and the apex of the tapered cut is inside the mounting base. A spherical groove is provided at the point where the apex of the tapered cut extends into the mounting base. The spherical groove and the spherical protrusion are corresponding in position and hinged together. A magnetic block is fixedly connected to the side of the mounting base opposite to the spherical groove.

[0011] Compared with the prior art, this utility model provides a noise-reducing microphone for robot voice interaction, which has the following beneficial effects:

[0012] 1. This noise-canceling microphone for robot voice interaction, through its telescopic and swinging structure design, can flexibly adjust its position and angle according to the robot's movement state during various complex tasks. Whether the robot is performing delicate operations in a narrow space or moving quickly in an open area, the microphone can dynamically adapt to ensure that it is always in the best sound collection position, greatly improving its adaptability to different working scenarios and effectively overcoming the problem of traditional noise-canceling microphones being fixed and unable to cope with the diverse movements of robots.

[0013] 2. This noise-canceling microphone, used for robot voice interaction, features a noise-canceling shell combined with internal sound-absorbing cotton filling. In addition, its flexible telescopic and swinging structures allow the microphone to be precisely aligned with the direction of the sound source, avoiding unclear sound acquisition due to position and angle deviations. These two aspects work together to significantly improve the accuracy and clarity of sound acquisition. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of this utility model;

[0015] Figure 2 is an exploded view of the structure of this utility model;

[0016] Figure 3 is a cross-sectional schematic diagram of the telescopic structure of this utility model.

[0017] In the diagram: 1. Noise-reducing housing; 2. Cable conduit; 3. Corrugated conduit; 4. Mounting base; 5. Pickup hole; 6. Microphone body; 7. C-shaped slider; 8. Spherical protrusion; 9. Swing rod; 10. Tapered cut; 11. Slider; 12. Sliding hole; 13. Connecting rod; 14. Hinge hole; 15. Magnetic block; 16. Spherical groove; 17. Hinge rod; 18. Groove; 19. Sound-absorbing cotton. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please refer to Figures 1-3. A noise-reducing microphone for robot voice interaction includes a noise-reducing shell 1, a microphone body 6, and sound-absorbing cotton 19. A set of evenly distributed pickup holes 5 are opened through one side of the noise-reducing shell 1. The microphone body 6 is installed inside the noise-reducing shell 1. The side of the microphone body 6 with the wiring is away from the pickup holes 5. The other end of the wiring of the microphone body 6 passes through the noise-reducing shell 1 and is located outside the noise-reducing shell 1. A spherical groove 16 is filled between the noise-reducing shell 1 and the microphone body 6. The side of the noise-reducing shell 1 away from the pickup holes 5 is provided with a telescopic structure. The side of the telescopic structure away from the noise-reducing shell 1 is provided with a swinging structure.

[0020] Furthermore, a cable conduit 2 is fixedly connected to the side of the noise-reducing housing 1 away from the pickup hole 5. One open end of the cable conduit 2 is fixedly connected to the noise-reducing housing 1. The wiring of the microphone body 6 passes through the cylindrical surface of the cable conduit 2 and extends to the outside of the cable conduit 2. The cable conduit 2 is used to lead the wiring of the microphone body 6 to the outside to connect with the circuit board of the robot. The cable conduit 2 is used to connect the noise-reducing housing 1 and the corrugated pipe 3.

[0021] Furthermore, the telescopic structure includes a bellows 3, a slider 11, a sliding hole 12, and a C-shaped sliding rod 7. One open end of the bellows 3 is fixedly connected to the side of the cable tube 2 facing away from the noise reduction housing 1. The side of the cable tube 2 connected to the bellows 3 is fixedly connected to the C-shaped sliding rod 7. The two ends of the two symmetrical folds of the C-shaped sliding rod 7 are fixedly connected to the cable tube 2. Another C-shaped sliding rod 7 is fixedly connected to the side of the bellows 3 opposite to the opening. The two ends of the two symmetrical folds of the C-shaped sliding rod 7 are fixedly connected to the bellows 3. A sliding hole 12 is opened through the center of one side of the slider 11. Two sliders 11 are slidably connected to the middle fold of each C-shaped sliding rod 7. The sliding hole 12 is slidably connected to the C-shaped sliding rod 7. The bellows 3 is a tube with a telescopic length. The sliding hole 12 allows the slider 11 to slide on the C-shaped sliding rod 7.

[0022] Furthermore, the telescopic structure also includes hinge rods 17, grooves 18, connecting rods 13, and hinge holes 14. Grooves 18 are provided on the side of the slider 11 facing away from the cable conduit 2, and grooves 18 are also provided on the side of the slider 11 opposite to the opening of the bellows 3. Hinges 17 are fixedly connected between the two side walls of the grooves 18. The two ends of the hinge rods 17 are fixedly connected to the grooves 18. The axis of the hinge rods 17 is perpendicular to the axis of the C-shaped slide rod 7. Three hinge holes 14 arranged in a straight line are provided through one side of the connecting rod 13. The center of the middle hinge hole 14 coincides with the center of the connecting rod 13. The centers of the two side hinge holes 14 are symmetrical about the center of the connecting rod 13 and are located close to the edge. All hinge rods 17 on the cable conduit 2 are hinged to the connecting rods 13. The hinge hole 14 at one end of the bellows 3 is hinged to the hinge rod 17. The center lines of the hinge holes 14 in the middle of the two connecting rods 13 coincide. The two hinge holes 14 are hinged together by a hinge shaft. The hinge holes 14 at the other end of the two connecting rods 13 are respectively hinged to the hinge holes 14 at one end of the other two connecting rods 13 by a hinge shaft. The hinge holes 14 in the middle of the two connecting rods 13 are hinged together by a hinge shaft. The hinge holes 14 at the other end of the two connecting rods 13 are respectively hinged to the hinge rods 17 on the bellows 3. The groove 18 is used to connect the hinge rods 17. The groove 18 and the hinge holes 14 make the slider 11 and the connecting rods 13 hinged together. The connecting rods 13 are distributed in a scissor structure. The rotation between the hinge holes 14 and the hinge shaft drives the bellows 3 to extend and retract.

[0023] Furthermore, the swing structure includes a spherical protrusion 8 and a swing rod 9. The side of the corrugated pipe 3 facing away from the cable conduit 2 is fixedly connected to the swing rod 9, and the end of the swing rod 9 facing away from the corrugated pipe 3 is fixedly connected to the spherical protrusion 8. The spherical protrusion 8 is used to install the swing rod 9.

[0024] Furthermore, the swing structure also includes a mounting base 4, a spherical groove 16, a magnetic block 15, and a conical cutout 10. A conical cutout 10 is provided on one side of the mounting base 4, with the cone apex of the conical cutout 10 inside the mounting base 4. A spherical groove 16 is provided at the point where the cone apex of the conical cutout 10 extends into the mounting base 4. The spherical groove 16 corresponds to and is hinged to the spherical protrusion 8. A magnetic block 15 is fixedly connected to the side of the mounting base 4 away from the spherical groove 16. The swing rod 9 and the spherical groove 16 are hinged to allow the spherical protrusion 8 to rotate and swing on the mounting base 4. The conical cutout 10 ensures that the spherical protrusion 8 does not interfere with the mounting base 4 when swinging. The magnetic block 15 is used to magnetically connect the mounting base 4 to the robot structure.

[0025] Structural Description:

[0026] Noise-canceling housing 1: It has a wrap-around structure with evenly distributed pickup holes 5 through one side. Its function is to protect the internal microphone body 6, while the pickup holes 5 serve as the sound entry channel.

[0027] Cable conduit 2: It is tubular, with one end open and fixedly connected to the noise reduction housing 1. Its function is to guide the wiring of the microphone body 6 to the robot circuit board, and at the same time connect the noise reduction housing 1 and the corrugated pipe 3.

[0028] Corrugated tube 3: A telescopic tubular structure in which the position of the microphone in the telescopic direction is adjusted by its own telescopic movement;

[0029] Mounting base 4: It has a block structure with a tapered cutout 10 on one side and a spherical groove 16 inside. It is connected to the robot structure through a magnetic block 15 to provide fixed support for the microphone and to realize the swing of the microphone in conjunction with the spherical protrusion 8.

[0030] Sound pickup hole 5: A perforated structure on the noise-canceling housing 1, evenly distributed, serving as the entrance for sound to enter the noise-canceling microphone;

[0031] Microphone body 6: Its core function is to receive sound signals and convert them into electrical signals for transmission to the robot circuit board; C-shaped slider 7: Shaped like a "C", it provides a sliding track for slider 11 to facilitate the movement of the telescopic structure;

[0032] Spherical protrusion 8: A spherical structure that mates with the spherical groove 16 on the mounting base 4 to enable the rotation and swing of the swing arm 9 and the microphone body 6;

[0033] Swing rod 9: A rod-shaped structure, one end of which is connected to the corrugated pipe 3 and the other end is connected to the spherical protrusion 8, which drives the microphone body 6 to swing.

[0034] Conical cut 10: A conical recess formed on the mounting base 4 to provide space for the spherical protrusion 8 to swing and avoid interference;

[0035] Slider 11: Block structure with a through hole 12 on one side, slides on the C-shaped slide rod 7 and participates in the movement of the telescopic structure;

[0036] Sliding hole 12: A hole-like structure opened on the slider 11, allowing the slider 11 to slide on the C-shaped slider 7; Connecting rod 13: A rod-like structure with three hinge holes 14 arranged in a straight line through one side, connecting with other components through the hinge holes 14, transmitting motion in the telescopic structure, and driving the bellows 3 to extend and retract.

[0037] Hinge hole 14: A hole-like structure opened on the connecting rod 13, distributed in a scissor structure, connecting various components through the hinge shaft, realizing relative rotation between the connecting rods 13, and driving the bellows 3 to extend and retract;

[0038] Magnetic block 15: a block-shaped structure, installed on the side of the mounting base 4 opposite to the spherical groove 16, used to magnetically connect the mounting base 4 to the robot structure;

[0039] Spherical groove 16: It is a spherical concave shape, located between the noise reduction shell 1 and the microphone body 6 and inside the mounting base 4. It may play a buffering role between the noise reduction shell 1 and the microphone body 6, and cooperate with the spherical protrusion 8 inside the mounting base 4 to achieve swinging.

[0040] Hinged rod 17: A rod-shaped structure with both ends fixed to the two side walls of the groove 18, used to connect the slider 11 and the connecting rod 13 so that the two can move in a hinged manner;

[0041] Groove 18: A groove-shaped structure formed on the slider 11 for mounting the hinge rod 17 to achieve a hinged connection between the slider 11 and the connecting rod 13;

[0042] Sound-absorbing cotton 19: It is filled between the noise-reducing shell 1 and the microphone body 6 to absorb sound and reduce noise.

[0043] Working principle: The noise-canceling housing 1 serves as the protective and supporting structure for the entire microphone. A set of evenly distributed pickup holes 5 are perforated on one side, acting as the channel for sound to enter the microphone. External sound enters the noise-canceling housing 1 through the pickup holes 5 and is received by the microphone body 6 installed inside. The microphone body 6 converts the received sound signal into an electrical signal, which is then transmitted to the robot's circuit board for further processing via its wiring. When the robot's movement requires the microphone to extend or retract within a certain range, the bellows 3 is pulled. The C-shaped slide rods 7, fixedly connected to the cable conduit 2 and bellows 3 respectively, provide a sliding track for the slider 11. The sliding hole 12 on the slider 11 is slidably connected to the C-shaped slide rod 7. Simultaneously, the slider 11 is hinged to the connecting rod 13 via the hinge rod 17 in the groove 18. When the connecting rod 13 rotates, it pushes the slider... Sliding slider 11 slides on C-shaped slider 7. Since the bellows 3 is a tube with a telescopic length, the sliding of slider 11 will drive the bellows 3 to telescopically move, thereby realizing the position adjustment of the microphone in the telescopic direction to better adapt to the robot's movement state and optimize the sound acquisition position. The mounting base 4 is magnetically connected to the robot structure through magnetic block 15, providing fixed support for the entire microphone. When the robot's movement requires the microphone to swing at an angle, the bellows 3 swings, and the spherical protrusion 8 can rotate freely in the spherical groove 16, thereby driving the swing rod 9 and the entire microphone body 6 to swing. The tapered cutout 10 on the mounting base 4 provides sufficient space for the spherical protrusion 8 to swing, avoiding interference between the spherical protrusion 8 and the mounting base 4 when swinging, ensuring that the microphone can flexibly adjust the angle and effectively acquire sound.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise-reducing microphone for robot voice interaction, comprising a noise-reducing shell (1), a microphone body (6), and sound-absorbing cotton (19), wherein a set of evenly distributed pickup holes (5) are provided through one side of the noise-reducing shell (1), the microphone body (6) is installed inside the noise-reducing shell (1), the side of the microphone body (6) with wiring faces away from the pickup holes (5), the other end of the wiring of the microphone body (6) passes through the noise-reducing shell (1) and is located outside the noise-reducing shell (1), and a spherical groove (16) is filled between the noise-reducing shell (1) and the microphone body (6), characterized in that: The noise-reducing housing (1) has a telescopic structure on the side facing away from the pickup hole (5), and the telescopic structure has a swing structure on the side facing away from the noise-reducing housing (1).

2. The noise reducing microphone according to claim 1, applied to a robot voice interaction, characterized in that: The noise-reducing housing (1) is fixedly connected to a cable tube (2) on the side opposite to the pickup hole (5). One end of the cable tube (2) is fixedly connected to the noise-reducing housing (1). The wiring of the microphone body (6) passes through the cylindrical surface of the cable tube (2) and extends to the outside of the cable tube (2).

3. The noise reducing microphone according to claim 2, applied to a robot voice interaction, characterized in that: The telescopic structure includes a corrugated pipe (3), a slider (11), a sliding hole (12), and a C-shaped slider (7). One end of the opening of the corrugated pipe (3) is fixedly connected to the side of the cable tube (2) away from the noise reduction shell (1). The side of the cable tube (2) connected to the corrugated pipe (3) is fixedly connected to the C-shaped slider (7). The two ends of the two symmetrical folds of the C-shaped slider (7) are fixedly connected to the cable tube (2). Another C-shaped slider (7) is fixedly connected to the side of the opening opposite to the corrugated pipe (3). The two ends of the two symmetrical folds of the C-shaped slider (7) are fixedly connected to the corrugated pipe (3). A sliding hole (12) is opened through the center of one side of the slider (11). Two sliders (11) are slidably connected to the middle fold of each C-shaped slider (7). The sliding hole (12) is slidably connected to the C-shaped slider (7).

4. The noise reducing microphone according to claim 3, applied to a robot voice interaction, characterized in that: The telescopic structure also includes a hinge rod (17), a groove (18), a connecting rod (13), and hinge holes (14). The slider (11) has grooves (18) on the side facing away from the cable conduit (2), and grooves (18) are also provided on the side of the slider (11) opposite to the opening of the corrugated pipe (3). A hinge rod (17) is fixedly connected between the two side walls of the groove (18). Both ends of the hinge rod (17) are fixedly connected to the groove (18). The axis of the hinge rod (17) is perpendicular to the axis of the C-shaped slide rod (7). Three hinge holes (14) are arranged in a straight line through one side of the connecting rod (13). The center of the middle hinge hole (14) coincides with the center of the connecting rod (13), and the centers of the two side hinge holes (14) are about... The connecting rod (13) is centrally symmetrical and located close to the edge. The hinge rod (17) on the cable tube (2) is hinged to the connecting rod (13). The hinge hole (14) at one end of the connecting rod (13) is hinged to the hinge rod (17). The center lines of the hinge holes (14) in the middle of the two connecting rods (13) coincide. The two hinge holes (14) are hinged together by a hinge shaft. The hinge holes (14) at the other end of the two connecting rods (13) are respectively hinged to the hinge holes (14) at one end of the other two connecting rods (13) by a hinge shaft. The hinge holes (14) in the middle of the two connecting rods (13) are hinged together by a hinge shaft. The hinge holes (14) at the other end of the two connecting rods (13) are respectively hinged to the hinge rod (17) on the corrugated tube (3).

5. The noise reducing microphone according to claim 4, applied to a robot voice interaction, characterized in that: The swing structure includes a spherical protrusion (8) and a swing rod (9). The side of the corrugated pipe (3) facing away from the cable pipe (2) is fixedly connected to the swing rod (9), and the end of the swing rod (9) facing away from the corrugated pipe (3) is fixedly connected to the spherical protrusion (8).

6. The noise reducing microphone according to claim 5, applied to a robot voice interaction, characterized in that: The swing structure also includes a mounting base (4), a spherical groove (16), a magnetic block (15), and a conical cut (10). A conical cut (10) is provided on one side of the mounting base (4). The cone apex of the conical cut (10) is inside the mounting base (4). A spherical groove (16) is provided at the point where the cone apex of the conical cut (10) extends into the mounting base (4). The spherical groove (16) corresponds to the spherical protrusion (8) in position and is hinged. A magnetic block (15) is fixedly connected to the side of the mounting base (4) away from the spherical groove (16).

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