Knocking audio acquisition device based on lifting control and lifting table

Abstract

The utility model discloses a knock audio acquisition device and lift table based on lift control, including: audio acquisition module, mounting seat and end cap, mounting seat has the connecting part that is used for connecting external carrier, mounting seat is cap-shaped body, forms the cavity in the mounting seat, mounting seat upper end is open end, mounting seat lower end is open end, mounting seat lower end is open end, mounting seat lower end is open end, mounting seat upper end is open end, mounting seat lower end is open end. The audio acquisition module enters the cavity through the open end and is arranged in the cavity, the end cover covers the open end, and a pickup hole is formed in the end cover; the utility model further provides a lifting table which comprises a table plate and the knocking audio acquisition device based on lifting control, when the mounting seat is combined with the table plate, the end cover is right opposite to the bottom surface of the table plate, and the mounting seat is fixed on the bottom surface of the table plate by locking a screw into the connecting hole in the connecting part. According to the knocking audio acquisition device, the audio acquisition module is stored in the mounting seat, and the open end of the upper end is blocked by the end cover, so that an integral mounting module is formed, and standardized mounting and assembly are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting table control, in particular to an anti-interference knocking audio collection device and a lifting table. Background Art

[0002] Most of the human-computer interaction operations of smart products are nothing more than physical buttons, touch buttons, display screens, joysticks, etc. These operation methods have a common characteristic, that is, they need to operate a certain entity in a certain area or a certain position in a directional manner. This results in that when the user's hands are inconvenient, if they want to control the lifting of the desktop, the user has to stop the work in their hands and free their hands to operate other devices, which makes the operation cumbersome and extremely inconvenient. Therefore, people have designed many interactive operations that can free hands, such as voice recognition or vibration sensors, but voice recognition will significantly reduce the recognition rate in a noisy environment and is only useful in a quiet environment. Vibration sensors need to be calibrated regularly, have a limited measurement range, and are sensitive to vibration. The sensor is too sensitive to impact and is prone to accidental touches. On this basis, an interactive operation method called tapping control has emerged. The tapping control currently available on the market uses a pressure plate to sample tapping data. When the user taps the sensor with a finger, the sensor is subjected to pressure changes. At this time, the controller can read the pressure value. When the pressure value is greater than a certain value, it is considered to be a valid tap. This operation method is least affected by environmental factors, but the force of the tapping is difficult to control, and the cost of the pressure sensor is related to its area. Covering the desktop with sensors will result in excessive costs. In addition, the tapping control achieved by the pressure plate has a low degree of modularity, and requires more parameters to be changed depending on the product it is used with. The qualified rate and accuracy of the finished product are not ideal.

[0003] Therefore, based on the above problems, it is considered to control the lifting table by audio collection, that is, tapping on the desktop generates audio, and the lifting control is performed after collecting it; but in the process of implementing this control, the audio collection quality and installation method are important links; the existing practice is to mill a hole on the bottom surface of the table top, and place the audio collection module in the hole. In order to prevent the audio collection module from falling out, a tray is installed on the bottom surface of the table top with screws, and the tray is rotated to cover the hole and seal the audio collection module therein; this method seems to be relatively simple to implement, but the problem it brings is that the installation cannot be standardized, and holes need to be specially milled. There is a large gap between the audio collection module and the hole, which is easily affected by vibration and easily disturbed by external noise or noise, resulting in inaccurate control. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a percussion audio collection device based on lifting control, which realizes modular production and assembly, is conducive to later installation, and can effectively pick up control audio.

[0005] Furthermore, the utility model provides a lifting table with the above-mentioned anti-interference percussion audio collection device. By applying the audio collection device to the lifting table and assembling it on the bottom surface of the table top of the lifting table, it is only necessary to lock a few screws. During conventional installation, there is no need to drill holes on the bottom surface of the table top, which saves processing steps, facilitates standardized installation, and improves installation efficiency.

[0006] Of course, in order to achieve the effect of hidden installation, a placement groove can also be opened on the bottom of the table top. At this time, after the audio collection device is installed as a whole in the placement groove, the bottom of the audio collection device does not expose the placement groove or only partially exposes it to avoid being abrupt as much as possible.

[0007] The technical solution of the utility model is achieved in this way:

[0008] The percussion audio collection device based on lifting control includes: an audio collection module, a mounting seat and an end cover, wherein the mounting seat has a connecting portion for connecting to an external carrier, and the mounting seat is a cap-shaped body, a cavity is formed inside the mounting seat, and the upper end of the mounting seat is an open end, the audio collection module enters and is placed in the cavity through the open end, the end cover is covered on the open end, and a sound pickup hole is provided on the end cover.

[0009] In the above scheme, the mounting base is used to accommodate the audio acquisition module, which is an integrally molded plastic part. After the audio acquisition module is placed in the cavity, an end cover is installed on the open end cover, and a pickup hole is left on the end cover, which effectively limits the direction of audio collection and improves the collection accuracy.

[0010] Preferably, the audio acquisition module is a microphone sensor, which includes a circuit board and a microphone connected thereto. The inner wall of the cavity of the mounting seat is provided with convex ribs, and the circuit board is provided with corresponding notches. When the circuit board is sunk into the cavity, the convex ribs are inserted into the notches, so that the circuit board remains circumferentially fixed. In this way, the position of the audio acquisition module is fixed in the cavity to prevent it from rotating, so that the positioning is accurate.

[0011] Preferably, the convex rib does not extend to the open end so that the convex rib forms a downward avoidance, and when the end cover is covered on the open end, the lower end of the end cover abuts against the upper edge of the convex rib. The distance from the upper edge of the convex rib to the open end is equal to the thickness of the end cover, so that after the end cover is put in place, the entire upper end surface of the mounting base is flat, and after the end cover closes the open end, it is ensured that only the sound pickup hole collects sound.

[0012] Preferably, the outer edge of the upper end of the mounting seat protrudes outward to form the connecting portion, and a connecting hole is formed on the connecting portion. The mounting seat can be fixed by this technical means.

[0013] Preferably, the connecting portion is an annular body integrally formed on the outer edge of the upper end of the mounting seat. The annular body is equivalent to a flange, and a plurality of connecting holes can be provided in the circumference of the flange to facilitate screwing and fixing.

[0014] Preferably, the connecting portion is a plurality of lugs integrally formed on the outer edge of the upper end of the mounting seat. Similarly, the connecting holes are arranged on the lugs for fixing the mounting seat as a whole.

[0015] Preferably, the distance from the end of the rib to the outside of the open end is equal to the thickness of the end cover, and the end cover is clamped in the open end and placed on the rib, so as to ensure that the end surface of the sound pickup end is flat and can be closely attached to other products when used to prevent sound leakage.

[0016] Preferably, a socket for power supply or signal transmission is provided at the lower end of the mounting base, through which a plug can be inserted to connect with an interface reserved on the circuit board to introduce power or perform signal transmission exchange.

[0017] Preferably, the inner wall of the cavity is provided with a sound insulation member for blocking external noise. In this way, in actual use, vibration signals or noise from the external environment will be mostly blocked by the sound insulation member, which is conducive to the accuracy of picking up.

[0018] Preferably, the microphone is wrapped with a sound insulation member, which is also helpful in isolating interference caused by unnecessary vibration and ensuring the accuracy of the acquisition.

[0019] Preferably, the sound insulation member is silica gel or sound insulation cotton.

[0020] A lifting table includes a table top and the percussion audio collection device based on lifting control. When the mounting seat and the table top are combined, the end cover faces the bottom surface of the table top, and the mounting seat is fixed to the bottom surface of the table top by locking screws through the connecting holes on the connecting part.

[0021] Preferably, a spacer is provided between the end cover and the bottom surface of the table top to prevent the sound pickup hole from being blocked. This prevents the mounting base, the end cover and the table top from hard contact, further isolates the influence of external interference factors, and also prevents the sound pickup hole from being blocked.

[0022] Preferably, the spacer is a rubber ring or sound insulation cotton.

[0023] Preferably, a placement groove is provided on the bottom surface of the table top, the knocking audio collection device is placed in the placement groove as a whole, and the mounting base is fixed to the bottom of the placement groove by screwing in the connection hole on the connection part. After the audio collection device is installed in the placement groove as a whole, the bottom of the audio collection device does not expose the notch of the placement groove or only partially exposes it, so as to avoid being abrupt as much as possible.

[0024] The principle and beneficial effects of the utility model using the above technical solution are:

[0025] The utility model provides an anti-interference percussion audio collection device, in which an audio collection module is stored through a mounting seat, and the upper open end is blocked by an end cover, so as to form an integral installation module, which is conducive to standardized installation and assembly. The end cover seals the audio collection module in the cavity, and one or more sound pickup holes are left on the end cover, so that the sound can only be transmitted from the sound pickup holes, reducing the interference caused by environmental factors. At the same time, the structure of the device is simple, and the manufacturing difficulty and cost are low; the qualified rate of mass-produced finished products and product accuracy are guaranteed, and the user satisfaction is improved.

[0026] Specifically, the audio acquisition module is placed in the cavity of the mounting base, with the circuit board facing downward and the microphone facing the sound pickup end of the end cover with the sound pickup hole, so that the sound can only be transmitted from the direction of the sound pickup hole. The sound acquisition has high accuracy and strong anti-interference ability. It can be used even in noisy environments, and there is no need to cover the entire desktop like pressure plate control. The cost is low, the overall product is modular, and is less affected by the specifications of the matching products themselves, and is suitable for large-scale production of the same specifications. In actual use, you only need to knock on the desktop, and the knocking vibration sound will be collected by the audio acquisition module, and then the signal transmission and conversion can complete the lifting and lowering. The user can perform convenient operations while continuing to work with both hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional diagram of the knocking audio collection device in Example 1 installed on the bottom surface of the table top;

[0028] Figure 2 is a bottom perspective view of the table top in Example 2;

[0029] Figure 3 is a bottom stereogram of a percussion audio collection device;

[0030] Figure 4 A top perspective view of an anti-interference percussion audio collection device;

[0031] Figure 5 An exploded view of the upper side of the anti-interference percussion audio collection device;

[0032] The figures are marked as follows: 1-audio acquisition module, 2-mounting seat, 3-cavity, 4-microphone, 5-circuit board, 6-pickup end, 7-bottom end, 8-pickup hole, 9-open end, 10-end cover, 11-convex rib, 12-notch, 13-connecting part, 14-connecting hole, 15-socket, 16-table top, 17-mounting groove, 18-spacer. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0035] The specific implementation of the utility model is as follows:

[0036] Example 1: Figure 1 , 3 -5, the utility model first provides an anti-interference percussion audio collection device based on lifting control, including an audio collection module 1, a mounting seat 2 and an end cover 10. The mounting seat 2 is a cylindrical cap structure as a whole, and a cavity 3 is provided inside. The outer edge of the overall contour of the audio collection module 1 is also circular. Specifically, the audio collection module 1 is a microphone sensor, which includes a circuit board 5 and a microphone 4 connected thereto.

[0037] The audio acquisition module 1 is placed as a whole in the cavity 3. A sound insulation member (not shown) is pre-placed on the inner wall of the cavity 3. The sound insulation member can be made of double-layer silica gel to prevent interference from external noise.

[0038] The inner wall of the cavity of the mounting seat 2 is provided with a convex rib 11, and the circuit board 5 is provided with a notch 12 correspondingly. When the circuit board 5 is sunk into the cavity 3, the convex rib 11 is inserted into the notch 12, so that the circuit board 5 is kept fixed in the circumferential direction. The outer edge of the audio acquisition module 1 is in contact with the inner wall of the mounting seat 2. The audio acquisition module 1 includes a microphone 4 and a circuit board 5. The end of the mounting seat 2 close to the microphone 4 is the sound pickup end 6, and the end of the mounting seat 2 close to the circuit board 5 is the bottom end 7. The sound pickup end 6 is open to form the open end 9 of the mounting seat, and the end cover 10 at the open end 9 is provided with a sound pickup hole 8. The number of the sound pickup holes 8 is one or more, and the shape is any shape such as a circle or a triangle.

[0039] The microphone 4 may also be wrapped with sound insulation such as silicone before installation to isolate noise as much as possible.

[0040] The above introduces the anti-interference percussion audio collection device. Next, each part is introduced in detail:

[0041] Specifically, if Figure 4-5 As shown, the open end 9 of the mounting base is circular in shape, and the open end 9 connects the inside of the cavity 3 with the outside of the mounting base 2. A circular end cover 10 is provided at the open end 9, and the diameter of the end cover 10 is consistent with the diameter of the edge of the open end 9. The pickup hole 8 is located on the end cover 10. A convex rib 11 is convexly provided in the cavity 3 of the mounting base 2, and a notch 12 is provided on the circuit board 5 corresponding to the convex rib 11. During assembly, the circuit board 5 of the audio acquisition module 1 is sunk toward the cavity 3 and directly inserted from the open end 9. The notch 12 and the convex rib 11 slide relative to each other. After installation, the end cover 10 is covered on the open end 9 to complete the assembly.

[0042] Further, if Figure 4-5 As shown, the convex rib 11 does not extend to the open end 9 so that the upper end of the convex rib 11 sinks to avoid it. In this way, when the end cover 10 covers the open end 9, the lower end of the end cover 10 abuts against the upper edge of the convex rib 11; that is, the distance from the upper edge of the convex rib 11 to the open end 9 is equal to the thickness of the end cover 10. The end cover 10 is stuck in the open end 9 and placed on the convex rib 11. The convex rib 11 not only limits the circuit board circumferentially, but also supports the end cover 10, killing two birds with one stone.

[0043] Furthermore, the outer edge of the upper end of the mounting seat 2 protrudes outward to form a connecting portion 13, so that the open end 9, the end cover 10 and the connecting portion 13 form a flat surface. The connecting portion 13 can be an annular body integrally formed on the outer edge of the upper end of the mounting seat, and two or three connecting holes 14 are opened on the connecting portion 13.

[0044] Furthermore, if Figure 3 As shown, the bottom end 7 of the mounting base 2 is provided with a socket 15 for power supply or signal transmission, and the socket 15 may be a USB connection port, or it may be said that it is an interface for interaction provided by the percussion audio collection device.

[0045] A lifting table is provided, such as Figure 1-2 As shown, it includes a table top 16 and the anti-interference percussion audio collection device. The pickup end 6 of the device is placed tightly against the bottom of the table top 16, and the anti-interference percussion audio collection device is fixed to the bottom plate of the table top 16 by screwing in the connecting hole 14 on the connecting part 13.

[0046] The above paragraphs introduce the structure of the percussion audio collection device. Next, the application of the percussion audio collection device is introduced in detail:

[0047] When applied to a lift table, a single mounting base with an integrated audio acquisition module can be installed on the left or right side of the table top.

[0048] like Figure 1 As shown, a placement position is formed at any position on the bottom of the table 16. The bottom of the table is flat. The audio acquisition module 1 is installed on the left or right side of the bottom of the table. Before installation, a layer of spacer 18 can be placed between the end cover 10 and the bottom of the table. The spacer 18 can be a rubber ring or sound insulation cotton, which will not block the sound pickup hole, so that the device can still receive the knocking vibration signal from the table 16 through the sound pickup hole 8, avoiding the interference caused by the overall shaking of the table, making the installation more stable, and the vibration signal from the external environment has been blocked by the spacer 18. Figure 4 The state where the spacer 18 is a sound insulation cotton is shown. Figure 5 The state where the spacer 18 is a rubber ring is shown.

[0049] In specific applications, when tapping the desktop, the system picks up sound through the sensor, and distinguishes the control mode according to the different vibration signals generated by different tapping methods. For example, according to the audio waveform sampled in a silent environment, it can be known that tapping twice on the table board 16 with a finger can obtain two pulses with larger peak values. The extreme value of this pulse is very large. The interference signal caused by normal environmental noise and foreign objects on the desktop will not produce such a large pulse waveform. Therefore, when this pulse waveform appears, it is considered to be an effective user tapping. By recording and extracting samples of different users' operations, it is considered that the human body's habitual tapping frequency is between 3.75Hz-5.66Hz, that is, the effective tapping interval is between 176ms-266ms. The generation time of each effective pulse is counted, and then the time interval of the effective pulse is calculated. When the time interval is within a certain reasonable time, it is considered to be an action process of active tapping by the user, and then the table is controlled to rise or fall. These can all be completed through program settings.

[0050] Embodiment 2: This embodiment differs from Embodiment 1 in that: Figure 2 As shown, a placement groove 17 is formed at any position on the bottom surface of the table top 16, and the percussion audio collection device is installed as a whole in the placement groove 17. Before installation, a layer of spacer 18 can be placed between the end cover 10 and the bottom of the placement groove 17. The spacer 18 can be a rubber ring or sound insulation cotton, which will not block the sound pickup hole, so that the device can still receive the percussion vibration signal from the table top 16 through the sound pickup hole 8, avoiding interference caused by the overall shaking of the table top, making the installation more stable, and the vibration signal from the external environment has been mostly blocked by the spacer 18.

[0051] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A percussion audio collection device based on lifting control, Its characteristics are include: An audio collection module, a mounting seat and an end cover, the mounting seat having a connection portion for connecting to an external carrier, and the mounting seat is a cap-shaped body, a cavity is formed inside the mounting seat, the upper end of the mounting seat is an open end, the audio collection module enters through the open end and is placed in the cavity, the end cover is covered on the open end, and a sound pickup hole is provided on the end cover.

2. A percussion audio collection device based on lifting control according to claim 1, Its characteristics are: The audio acquisition module is a microphone sensor, which includes a circuit board and a microphone connected thereto. The inner wall of the cavity of the mounting base is provided with convex ribs, and the circuit board is provided with corresponding notches. When the circuit board sinks into the cavity, the convex ribs are inserted into the notches, so that the circuit board remains circumferentially fixed.

3. A percussion audio collection device based on lifting control according to claim 2, Its characteristics are: The convex rib does not extend to the open end position so that the convex rib forms a downward avoidance. When the end cover is covered on the open end, the lower end of the end cover abuts against the upper edge position of the convex rib.

4. A percussion audio collection device based on lifting control according to claim 1, Its characteristics are: The outer edge of the upper end of the mounting seat protrudes outward to form the connecting portion, and a connecting hole is opened on the connecting portion.

5. A percussion audio collection device based on lifting control according to claim 4, Its characteristics are: The connecting portion is an annular body integrally formed on the outer edge of the upper end of the mounting seat.

6. A percussion audio collection device based on lifting control according to claim 4, Its characteristics are: The connecting part is a plurality of lugs integrally formed on the outer edge of the upper end of the mounting seat.

7. The percussion audio collection device based on lifting control according to claim 1, Its characteristics are: A socket for power supply or signal transmission is provided at the lower end of the mounting base.

8. The percussion audio collection device based on lifting control according to claim 1, Its characteristics are: The inner wall of the cavity is provided with a sound insulation piece for blocking external noise.

9. The percussion audio collection device based on lifting control according to claim 2, Its characteristics are: The microphone is wrapped with sound insulation.

10. A percussion audio collection device based on lifting control according to claim 8 or 9, Its characteristics are: The sound insulation piece is silica gel or sound insulation cotton.

11. A lifting table, Its characteristics are: It includes a table top and a lifting-controlled percussion audio collection device as described in any one of claims 1 to 9. When the mounting base is combined with the table top, the end cover faces the bottom surface of the table top, and the mounting base is fixed to the bottom surface of the table top by locking screws through the connecting holes on the connecting part.

12. The lifting table according to claim 11, Its characteristics are: A spacer is provided between the end cover and the bottom surface of the table top to prevent the sound pickup hole from being blocked.

13. The lifting table according to claim 12, Its characteristics are: The spacer is a rubber ring or sound insulation cotton.

14. The lifting table according to claim 11, Its characteristics are: A placement groove is provided on the bottom surface of the table top, the knocking audio collection device is placed in the placement groove as a whole, and the mounting seat is fixed to the bottom of the placement groove by screws locked into the connection holes on the connection part.

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