Rapid test equipment for directional microphone

Abstract

The utility model is suitable for the technical field of microphone detection, and provides a directional microphone rapid test device, which comprises a mounting seat and a test tube arranged on the mounting seat, one end of the test tube is provided with a sound source module, and the test tube is provided with a detection port; the execution mechanism comprises a rotating arm and a rotating stand column, the rotating stand column is fixedly installed on the installation base, the rotating arm is arranged on the rotating stand column, and the rotating stand column is further provided with a multifunctional clamping assembly used for clamping a microphone and driving the microphone to rotate; the number of the executing mechanisms is two. According to the utility model, the two groups of symmetrically arranged actuating mechanisms are matched with the test tube, so that the microphone modules to be detected can be quickly switched, the batch quick 100% detection is realized, and the problems that the single detection efficiency is low and the whole detection cannot be met in the traditional sampling detection mode are solved.

Description

Technical Field

[0001] This utility model relates to the field of microphone testing technology, specifically a rapid testing device for directional microphones. Background Technology

[0002] In today's world of ubiquitous electronic devices, unidirectional microphones, as a crucial audio input device, are widely used in various electronic products, such as professional recording equipment, conferencing systems, live streaming equipment, and smartphones. Their unique directional characteristics effectively focus sound from a specific direction while reducing noise interference from other directions, thus providing users with high-quality sound capture. However, with the rapid increase in market demand for unidirectional microphones, microphone manufacturers are facing enormous production capacity pressure. In the traditional unidirectional microphone production process, there are many problems that urgently need to be addressed in the microphone performance testing stage.

[0003] In traditional testing methods, microphones are mostly sampled, not tested on every single item. However, current customer requirements are increasing, demanding a 100% pass rate for every product, necessitating testing of each and every item. Traditional sampling methods are inefficient and cannot meet the needs of rapid batch testing. Therefore, there is an urgent need to provide rapid testing equipment for directional microphones to overcome the shortcomings in current practical applications. Utility Model Content

[0004] The purpose of this invention is to provide a rapid testing device for directional microphones, aiming to solve the problems mentioned in the background art.

[0005] This utility model is implemented as follows: a rapid testing device for directional microphones, characterized in that it includes a mounting base and a test tube disposed on the mounting base. One end of the test tube is provided with a sound source module, and a detection port is provided in the middle of the side of the test tube. A set of actuators is provided on each side of the detection port. The two sets of actuators are mounted on the mounting base and arranged opposite to each other. One set of actuators includes a rotating column and a rotating arm. The rotating column is fixedly mounted on the mounting base, and the rotating arm is rotatably mounted on the rotating column. The rotating arm is provided with a multi-functional clamping component for clamping the microphone and driving the microphone to rotate.

[0006] As a further embodiment of this utility model: a detection positioning plate is provided at the detection port of the test tube, and a circular hole corresponding to the detection port is opened on the detection positioning plate. A magnet for adsorbing the rotating arm is provided on the detection positioning plate and / or the rotating arm.

[0007] As a further embodiment of this utility model: the mounting base is provided with a limiting detection post for restricting the opening position of the rotating arm, and the rotating arm and / or the limiting detection post is provided with a magnet for attracting the limiting detection post and / or the rotating arm.

[0008] As a further embodiment of this utility model: the limit detection column is also provided with a rotating arm position sensing switch, and the rotating arm is provided with a rotating arm position sensing block that cooperates with the rotating arm position sensing switch. When the rotating arm and the limit detection column are attracted by a magnet, the rotating arm position sensing block triggers the rotating arm position sensing switch.

[0009] As a further embodiment of this utility model: the multifunctional clamping assembly includes a rotary pointing motor, a rotary clamp shaft, and a clamp. The rotary pointing motor is a stepper motor, which is fixedly mounted on the rotary arm. The output shaft of the rotary pointing motor is fixedly connected to the rotary clamp shaft. The end of the rotary clamp shaft away from the rotary pointing motor is connected to the clamp. The clamp is used to fix the microphone. When the rotary arm rotates to the detection port position, the clamp and the microphone it holds are inserted into the test tube.

[0010] As a further embodiment of this utility model: the clamp includes a clamping base and an elastic electrical connection arm. The clamping base is provided with a gap that allows sound to pass through. The elastic electrical connection arm is provided with an elastic contact piece. The elastic contact piece is electrically connected to the microphone and elastically fixes the microphone on the clamping base.

[0011] As a further embodiment of this utility model: a rotary sensing switch is provided on the limit detection column, and a rotary detection block that cooperates with the rotary sensing switch is fixedly installed on the output shaft of the rotary pointing motor. When the rotary pointing motor rotates the fixture to the initial position, the rotary detection block triggers the rotary sensing switch.

[0012] As a further embodiment of this utility model, a handle is provided on the rotating arm.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By using two sets of actuators to alternately clamp the microphone to be tested and feed it into the test tube for testing, the speed at which workers install and remove microphones is basically matched with the testing speed, enabling rapid batch testing and solving the problem of low testing efficiency in the traditional sampling inspection mode;

[0015] 2. The magnet on the rotating arm can attract the limit detection post and the detection positioning plate, ensuring that the microphone detection position is accurate and stable. Combined with the stepper motor stopping at 0° and 180° according to preset instructions, it can ensure the accurate pointing of the microphone during detection and improve the detection accuracy.

[0016] 3. The clamping base on the fixture wraps around the component to be tested, and the elastic electrical connecting arm presses it appropriately onto the clamping base while ensuring a reliable electrical connection for the microphone. The through holes or notches on the clamping base prevent the microphone's sound guide hole from being covered, ensuring accurate and reliable test data with high precision. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall main structure of this utility model.

[0019] Figure 2 This is an enlarged structural schematic diagram of the detection port and the actuator in this utility model.

[0020] Figure 3 This is an enlarged structural diagram of the actuator facing the detection port in this utility model.

[0021] Figure 4 This is an enlarged structural diagram of the actuator facing away from the detection port in this utility model.

[0022] In the attached diagram: 1-Sound source module, 2-Test tube, 3-Mounting base, 4-Rotating arm, 5-Rotating column, 6-Detection port, 7-Detection positioning plate, 8-Handle, 9-Rotating pointing motor, 10-Spray hole, 11-Limit detection column, 12-Rotating fixture shaft, 13-Fixed fixture, 131-Clamping base, 132-Flexible electrical connection arm, 14-Rotating arm position sensing switch, 15-Rotating arm position sensing block, 16-Rotation sensing switch, 17-Rotation detection block. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The present invention will be further explained below with reference to specific embodiments.

[0026] Please see Figures 1-4 The directional microphone rapid testing device provided in this embodiment includes a mounting base 3 and a test tube 2 disposed on the mounting base 3. A sound source module 1 is disposed at one end of the test tube 2, and a detection port 6 is disposed in the middle of the side of the test tube 2. An actuator is disposed on each side of the detection port 6. The two actuators are mounted on the mounting base 3 and disposed opposite to each other. One actuator includes a rotating column 5 and a rotating arm 4. The rotating column 5 is fixedly mounted on the mounting base 3, and the rotating arm 4 is rotatably mounted on the rotating column 5. The rotating arm 4 is provided with a multi-functional clamping component for clamping the microphone and driving the microphone to rotate.

[0027] The test tube 2 has a test positioning plate 7 at the test port 6 position. The test positioning plate 7 has a circular hole corresponding to the test port 6. The test positioning plate 7 and / or the rotating arm 4 are provided with magnets for adsorbing the rotating arm 4.

[0028] The mounting base 3 is provided with a limiting detection post 11 for restricting the opening position of the rotating arm 4, and the rotating arm 4 and / or the limiting detection post 11 are provided with magnets for attracting the limiting detection post 11 and / or the rotating arm 4.

[0029] The limit detection column 11 is also provided with a rotating arm position sensing switch 14, and the rotating arm 4 is provided with a rotating arm position sensing block 15 that cooperates with the rotating arm position sensing switch 14. When the rotating arm 4 and the limit detection column 11 are attracted by a magnet, the rotating arm position sensing block 15 triggers the rotating arm position sensing switch 14.

[0030] The multi-functional clamping assembly includes a rotary pointing motor 9, a rotary clamp shaft 12, and a clamp 13. The rotary pointing motor 9 is a stepper motor, which is fixedly mounted on the rotating arm 4. The output shaft of the rotary pointing motor 9 is fixedly connected to the rotary clamp shaft 12. The end of the rotary clamp shaft 12 away from the rotary pointing motor 9 is connected to the clamp 13. The clamp 13 is used to fix the microphone. When the rotating arm 4 rotates to the detection port 6 position, the clamp 13 and the microphone it holds are inserted into the test tube 2. The rotary pointing motor 9, being a stepper motor, drives the rotary clamp shaft 12 and the clamp 13 to rotate, so that the microphone to be tested is at different angles inside the test tube for sound pickup detection.

[0031] The clamp 13 includes a clamping base 131 and a flexible electrical connection arm 132. The clamping base 131 has a gap that allows sound to pass through. The flexible electrical connection arm 132 has a flexible contact piece, which is electrically connected to the microphone and elastically fixes the microphone to the clamping base 131. The flexible contact piece is not shown in the attached drawings. In this embodiment, the clamping base 131 is a C-shaped base with a notch to accommodate the microphone body. The notch ensures that sound propagation is not obstructed, allowing the microphone's receiving hole to be fully exposed. The flexible electrical connection arm 132 is electrically connected to the microphone through the flexible contact piece and elastically fixes the microphone to the clamping base 131.

[0032] A rotary sensing switch 16 is provided on the limit detection column 11. A rotary detection block 17 that cooperates with the rotary sensing switch 16 is fixedly installed on the output shaft of the rotary pointing motor 9. When the rotary pointing motor 9 rotates the clamp 13 to the initial position, the rotary detection block 17 triggers the rotary sensing switch 16.

[0033] A handle 8 is provided on the rotating arm 4. The handle 8 is convenient for the inspection personnel to hold and quickly rotate the rotating arm.

[0034] In this embodiment of the invention, the sound source module 1 is a loudspeaker, and the sound is constrained by the test tube 2, transmitted from one end to the other, which can be regarded as a directional sound source. The microphone is placed in the middle of the test tube 2 through the detection port 6, and the pickup direction is towards the sound source direction to detect the directional sensitivity. Then, it is rotated 180° away from the sound source direction and detected again, which is the reverse pickup sensitivity. Thus, the performance data of the directional microphone can be obtained. The device for installing the microphone is designed with two rotating arms 4, each with a clamp 13 as a clamping fixture, which clamps the microphone and transmits the detection data. The rotating arms 4 rotate to allow the microphone to enter the detection port 6. The magnet on the upper part is attached to the detection positioning plate 7 to ensure accurate positioning and no movement. The stepper motor on the rotating arm 4 stops at two angle positions, 0° and 180°, according to preset instructions to detect the microphone signal. After the detection is completed, the rotating arm 4 is rotated to drive another rotating arm 4 with a microphone installed to rotate for detection. The speed at which the worker installs the microphone to be tested and removes the tested microphone is basically matched with the detection speed, which can realize rapid detection. Compared with the existing technology, this utility model avoids the problem of low detection efficiency and inability to meet the needs of rapid batch detection in the traditional sampling mode by setting the execution mechanism and the drive mechanism together.

[0035] In summary, the working principle of this utility model is as follows:

[0036] The sound source module 1 is a speaker. The sound is constrained by the test tube 2 and conducted from one end to the other, which can be regarded as a directional sound source. The microphone is placed in the middle of the long tube through the detection port 6. The pickup direction is towards the sound source and the directional sensitivity is measured. Then, it is rotated 180° away from the sound source and measured again, which is the reverse pickup sensitivity. The performance data of the directional microphone can be obtained. The device for installing the microphone is designed with two rotating arms 4, each with a clamp 13 as a clamping fixture to hold the microphone and measure the data. The rotating arm 4 rotates to put the microphone into the detection port 6. The magnet on the rotating arm 4 is attracted to the detection positioning plate 7 to ensure accurate positioning and no movement. The stepper motor on the rotating arm 4 stops at two angle positions of 0° and 180° according to the preset instructions to detect the microphone signal. After the test is completed, the rotating arm 4 is rotated to drive the other rotating arm 4 with the microphone installed to rotate for testing. The speed at which the worker installs the microphone to be tested and removes the microphone that has been tested is basically matched with the testing speed, which can achieve rapid testing.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rapid testing device for directional microphones, characterized in that, The device includes a mounting base (3) and a test tube (2) mounted on the mounting base (3). One end of the test tube (2) is provided with a sound source module (1), and a detection port (6) is provided in the middle of the side of the test tube (2). A set of actuators is provided on each side of the detection port (6). The two sets of actuators are mounted on the mounting base (3) and arranged opposite to each other. One set of actuators includes a rotating column (5) and a rotating arm (4). The rotating column (5) is fixedly mounted on the mounting base (3), and the rotating arm (4) is rotatably mounted on the rotating column (5). The rotating arm (4) is provided with a multi-functional clamping component for clamping the microphone and driving the microphone to rotate.

2. The rapid testing device for directional microphones according to claim 1, characterized in that, The test tube (2) has a test positioning plate (7) at the test port (6) position. The test positioning plate (7) has a circular hole corresponding to the test port (6). The test positioning plate (7) and / or the rotating arm (4) are provided with magnets for adsorbing the rotating arm (4).

3. The rapid testing device for directional microphones according to claim 1, characterized in that, The mounting base (3) is provided with a limiting detection post (11) for limiting the opening position of the rotating arm (4), and the rotating arm (4) and / or the limiting detection post (11) are provided with magnets for adsorbing the limiting detection post (11) and / or the rotating arm (4).

4. The rapid testing device for a directional microphone according to claim 3, characterized in that, The limit detection column (11) is also provided with a rotating arm position sensing switch (14), and the rotating arm (4) is provided with a rotating arm position sensing block (15) that cooperates with the rotating arm position sensing switch (14). When the rotating arm (4) and the limit detection column (11) are attracted by a magnet, the rotating arm position sensing block (15) triggers the rotating arm position sensing switch (14).

5. The rapid testing device for a directional microphone according to claim 4, characterized in that, The multi-functional clamping assembly includes a rotary pointing motor (9), a rotary clamp shaft (12), and a clamp (13). The rotary pointing motor (9) is a stepper motor. The rotary pointing motor (9) is fixedly mounted on the rotary arm (4). The output shaft of the rotary pointing motor (9) is fixedly connected to the rotary clamp shaft (12). The end of the rotary clamp shaft (12) away from the rotary pointing motor (9) is connected to the clamp (13). The clamp (13) is used to fix the microphone. When the rotary arm (4) rotates to the position of the detection port (6), the clamp (13) and the microphone it holds are inserted into the test tube (2).

6. The rapid testing device for a directional microphone according to claim 5, characterized in that, The clamp (13) includes a clamping base (131) and an elastic electrical connection arm (132). The clamping base (131) has a gap that allows sound to pass through. The elastic electrical connection arm (132) has an elastic contact piece. The elastic contact piece is electrically connected to the microphone and elastically fixes the microphone to the clamping base (131).

7. The rapid testing device for a directional microphone according to claim 5, characterized in that, A rotary sensing switch (16) is provided on the limit detection column (11). A rotary detection block (17) that cooperates with the rotary sensing switch (16) is fixedly installed on the output shaft of the rotary pointing motor (9). When the rotary pointing motor (9) rotates the fixture (13) to the initial position, the rotary detection block (17) triggers the rotary sensing switch (16).

8. The rapid testing device for a directional microphone according to any one of claims 1 to 7, characterized in that, A handle (8) is provided on the rotating arm (4).

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