An automatic sensing control system and method for an electric piano

Abstract

The present application relates to the technical field of electric piano control, and particularly relates to an automatic induction control system and method for electric piano. The system comprises: a recognition and detection module, which is used for recognizing and detecting whether a user is approaching or leaving in front of the electric piano; a signal transmission module, which is used for sending a behavior signal to a master control module when the recognition and detection module recognizes and detects that a user is approaching or leaving in front of the electric piano; the master control module sends a control signal in response to the behavior signal; a function execution module, which is used for switching the state of an external device of the electric piano according to the control signal; the external device comprises: a segmented driving module and a cover plate module, wherein the control signal is used for driving the segmented driving module to drive the cover plate module to reach a predetermined position; and the state of the external device comprises: an open state and a closed state. The present application can greatly improve the user experience of the electric piano, and make the electric piano meet the functionality while providing emotional value for the user.

Description

Technical Field

[0001] This invention relates to the field of electric piano control technology, specifically to an automatic sensing control system and method for an electric piano. Background Technology

[0002] As a common electronic musical instrument, the digital piano is widely used in homes, schools, and performances due to its small size, adjustable tone, and controllable volume. However, the operation of a traditional digital piano is rather mechanical and lacks an intelligent interactive experience. To address this, existing technologies have proposed several intelligent interaction methods for digital pianos.

[0003] For example, patent application CN102194446A discloses a device for controlling the rotation of a piano lid and a piano. The piano lid is connected to the piano body via a rotating shaft. The device includes: a motor; a touch sensing unit that senses user touch and outputs analog sensing signals; a central control unit that converts the analog sensing signals output by the touch sensing unit into digital sensing signals and outputs drive signals; and a motor drive unit that drives the rotating shaft to rotate by driving the motor forward or reverse according to the drive signals output by the central control unit, thereby driving the piano lid to open.

[0004] However, the above solutions still cannot meet the diverse needs of digital piano usage scenarios. Therefore, there is an urgent need for a digital piano control method with a better interactive experience. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic sensing control system and method for electric pianos, which partially solves or alleviates the above-mentioned deficiencies in the prior art, greatly improves the user experience of electric pianos, and enables electric pianos to provide emotional value to users while fulfilling their functional requirements.

[0006] To solve the aforementioned technical problems, the present invention specifically adopts the following technical solution: A first aspect of the present invention is to provide an automatic sensing control system for an electric piano, applied to an electric piano, the system comprising: The identification and detection module is used to identify whether a user is approaching or leaving in front of the electric piano; The signal transmission module is used to send a behavior signal to the main control module when the recognition and detection module detects that a user is approaching or leaving in front of the electric piano; the main control module responds to the behavior signal by issuing a control signal. A function execution module is used to switch the state of the external devices of the electric piano according to the control signal; the external devices include: a segmented drive module and a cover plate module, wherein the control signal is at least used to drive the segmented drive module to drive the cover plate module to a predetermined position; the state of the external devices includes: an on state and an off state; The segmented driving module includes: Guide rail, first link, second link, motor unit; The guide rail is provided with a limiter at its rear end; a first slider and a second slider are respectively provided on the guide rail; and the first end of the first connecting rod and the first end of the second connecting rod are respectively connected to the first slider and the second slider. The second end of the first connecting rod and the second end of the second connecting rod are respectively hinged to the connecting member, and the connecting member is connected to the cover plate module; The output end of the motor unit is connected to the first slider; When the cover plate module is in the first movement stage, the motor unit drives the first slider to move along the front end of the guide rail to the rear end of the guide rail. At this time, the second connecting rod moves synchronously toward the rear end of the guide rail under the driving action of the first connecting rod. At this time, the connecting member moves backward along the direction of the guide rail. When the second slider abuts against the limiting member, the cover plate module enters the second movement stage from the first movement stage. At this time, the second end of the first connecting rod and the second end of the second connecting rod rotate relative to the connecting member, so that the connecting member rotates relative to the horizontal plane.

[0007] In some embodiments, the external device further includes at least one of: a light strip, a screen, and a speaker; the light strip is disposed on the electric piano; the screen is disposed on the cover module; and the speaker is disposed inside the electric piano.

[0008] In some embodiments, the main control module is a microcontroller unit or a system-on-a-chip.

[0009] In some embodiments, the identification and detection module employs at least one of an infrared sensor, an ultrasonic sensor, a millimeter-wave radar, and a camera.

[0010] In some embodiments, the system further includes: The locking module is used to control the segmented drive module to fix the cover module when the cover module is detected to have reached the predetermined position.

[0011] A second aspect of the present invention is to provide an automatic sensing control method for an electric piano, applied to an electric piano, the method comprising: S1, detect whether a user is approaching or leaving in front of the electric piano; S2, when the system detects that a user is approaching or leaving in front of the electric piano, a behavior signal is sent to the main control module; the main control module responds to the behavior signal by issuing a control signal; S3, switch the state of the external device of the electric piano according to the control signal; the external device includes: a segmented drive module and a cover plate module, wherein the control signal is at least used to drive the segmented drive module to drive the cover plate module to a predetermined position; the state of the external device includes: an on state and a off state; The segmented driving module includes: Guide rail, first link, second link, motor unit; The guide rail is provided with a limiter at its rear end; a first slider and a second slider are respectively provided on the guide rail; and the first end of the first connecting rod and the first end of the second connecting rod are respectively connected to the first slider and the second slider. The second end of the first connecting rod and the second end of the second connecting rod are respectively hinged to the connecting member, and the connecting member is connected to the cover plate module; The output end of the motor unit is connected to the first slider; When the cover plate module is in the first movement stage, the motor unit drives the first slider to move along the front end of the guide rail to the rear end of the guide rail. At this time, the second connecting rod moves synchronously toward the rear end of the guide rail under the driving action of the first connecting rod. At this time, the connecting member moves backward along the direction of the guide rail. When the second slider abuts against the limiting member, the cover plate module enters the second movement stage from the first movement stage. At this time, the second end of the first connecting rod and the second end of the second connecting rod rotate relative to the connecting member, so that the connecting member rotates relative to the horizontal plane.

[0012] In some embodiments, the external device further includes at least one of: a light strip, a screen, and a speaker; the light strip is disposed on the electric piano; the screen is disposed on the cover module; and the speaker is disposed inside the electric piano.

[0013] In some embodiments, the main control module is a microcontroller unit or a system-on-a-chip.

[0014] In some embodiments, at least one of an infrared sensor, an ultrasonic sensor, a millimeter-wave radar, and a camera is used to identify whether a user is approaching or leaving in front of the electric piano.

[0015] In some embodiments, the method further includes: When the cover plate module is detected to have reached the predetermined position, the segmented drive module is controlled to fix the cover plate module.

[0016] Beneficial technical effects: This invention proposes an automatic sensing control system for an electric piano. By automatically detecting the user's approach and departure, the electric piano can proactively perform welcoming and farewell actions (such as opening the lid, raising the speakers, flashing lights, and displaying a welcome screen), making the performance more ceremonial and interactive. Furthermore, the electric piano of this invention, through the driving of a segmented drive module, enables the cover module (i.e., the key cover in this invention) connected to the connecting member to automatically open and close. Specifically, the opening of the cover module consists of two movements: translation and rotation. In the translation phase, the first slider, which drives the first connecting rod, and the second slider, which drives the second connecting rod, slide simultaneously until the second slider moves to the limiting member. During this phase, the cover module translates, revealing the keys. In the rotation phase, when the second slider stops sliding due to the obstruction of the limiting member, the first slider continues to slide, and the connecting member hinged to the first and second connecting rods begins to tilt and rotate, causing the rear end of the cover module to rotate around the front end, i.e., the rear end of the cover module tilts upwards (correspondingly, the closing of the cover module is the opposite of the opening process). The segmented movement of the connecting piece is achieved by adjusting the movement of the first and second sliders.

[0017] Based on the structure of an electric piano, this invention utilizes a segmented design for the cover module, employing only translation and rotation to achieve automatic opening and closing. In this invention, the cover module first translates, creating space for rotation. Then, one end of the cover module rotates, eliminating the need for additional external clearance. This two-stage movement process avoids excessive space occupation during cover module rotation, thus improving space utilization.

[0018] Furthermore, the automatic opening, closing, raising, and lowering of the piano lid module is controlled by a segmented drive module, effectively avoiding the tedious manual operation required by the user. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale. Obviously, the drawings described below are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of the closed state structure of the cover plate module of the electric piano of the present invention; Figure 2 This is an exploded view of the cover plate module of the electric piano of the present invention; Figure 3This is a schematic diagram of the internal structure of the cover plate module of the electric piano of the present invention; Figure 4 This is a schematic diagram of the segmented drive module of the electric piano of the present invention in different states; Figure 5 This is a schematic diagram of the cover module of the electric piano of the present invention after it has been opened. Figure 6 This is a schematic diagram of the structure of an automatic sensing control system for an electric piano provided by the present invention; Figure 7 A flowchart illustrating an automatic sensing control method for an electric piano provided by the present invention; Figure 8 This is a schematic block diagram of the structure of a computer device provided by the present invention.

[0021] Summary of attached labeling and identification: 1. Piano stand; 2. Cover plate module; 3. Connector; 4. Segmented drive module; 5. Sensor; 6. Piano keys; 7. Groove; 21. Speaker lower shell; 22. Speaker upper shell; 23. Speaker; 24. Speaker decorative cover; 41. Mounting base; 42. Motor unit; 43. Guide rail; 44. Limiting component; 421. Lead screw; 431. First connecting rod; 432. Second connecting rod; 433. First slider; 434. Second slider. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] In this document, suffixes such as "module," "part," or "unit" used to denote elements are used only for the purpose of illustrative purposes and have no specific meaning in themselves. Therefore, "module," "part," or "unit" may be used interchangeably.

[0024] In this document, the terms "upper," "lower," "inner," "outer," "front," "rear," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In this document, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] In this document, "and / or" includes any and all combinations of one or more of the listed related items.

[0027] In this article, "multiple" means two or more, that is, it includes two, three, four, five, etc.

[0028] As used in this specification, the term "about" typically means + / -5% of the value, more typically + / -4% of the value, more typically + / -3% of the value, more typically + / -2% of the value, even more typically + / -1% of the value, and even more typically + / -0.5% of the value.

[0029] In this specification, certain embodiments may be disclosed in a range-bound format. It should be understood that this "range-bound" description is merely for convenience and brevity and should not be construed as a rigid limitation on the disclosed range. Therefore, the description of a range should be considered as having specifically disclosed all possible subranges and the individual numerical values ​​within those ranges. For example, a description of the range 1-6 should be considered as having specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and the individual numbers within those ranges, such as 1, 2, 3, 4, 5, and 6. This rule applies regardless of the breadth of the range.

[0030] Example 1: Please see Figure 6 This invention provides an automatic sensing control system for an electric piano, applied to an electric piano, the system comprising: The identification and detection module is used to identify whether a user is approaching or leaving in front of the electric piano; The signal transmission module is used to send a behavior signal to the main control module when the recognition and detection module detects that a user is approaching or leaving in front of the electric piano; the main control module responds to the behavior signal by issuing a control signal. A function execution module is used to switch the state of the external devices of the electric piano according to the control signal; the external devices include: a segmented drive module and a cover plate module, wherein the control signal is at least used to drive the segmented drive module to drive the cover plate module to a predetermined position; the state of the external devices includes: an on state and a off state.

[0031] In some embodiments, the automatic sensing control system for electric pianos proposed in this invention adds extended functions such as automatic power on / off and welcome functions, which can greatly enhance the user experience of electric pianos and provide emotional value to users while fulfilling functional requirements.

[0032] Using a simple distance sensor, such as infrared reflection or ultrasound, while inexpensive, only identifies the distance to the user or obstacles in front of the piano, failing to accurately determine user behavior and intent, and easily leading to false triggers. Using traditional radar or cameras offers the advantage of accurately identifying user behavior through image recognition or radar data calculation, reducing false triggers; however, this solution is more expensive and requires the backend main control chip to have corresponding data processing capabilities. Alternatively, 24GHz millimeter-wave human presence detection radar can be used, which is significantly cheaper than cameras or traditional radar. It uses edge AI processing to identify human movements within its effective range, achieving relatively accurate recognition. The specific device used for the recognition and detection module can be freely chosen based on the required recognition accuracy and budget.

[0033] In some embodiments, sensors can be selected as needed (such as recognition accuracy requirements, cost budget, etc.), such as infrared sensors, ultrasonic sensors, 24GHz millimeter-wave human presence detection radar, cameras, etc., as recognition and detection modules.

[0034] In some embodiments, the behavioral signals include a user proximity signal and a user departure signal. Correspondingly, the control signals include a control on signal and a control off signal. The predetermined positions include a fully open position and a fully closed position.

[0035] In some embodiments, the external device further includes at least one of: a light strip, a screen, and a speaker; the light strip is disposed on the electric piano; the screen is disposed on the cover module; and the speaker is disposed inside the electric piano.

[0036] In some embodiments, the main control module is a microcontroller unit or a system-on-a-chip.

[0037] In some embodiments, the main control module can be any MCU (Microcontroller Unit) or SOC (System on a Chip) platform that meets the requirements, or it can be replaced by the main control chip of a traditional digital piano. Its function is to receive signals from the identification and detection module and issue commands to external devices such as motors, light strips, and screens to complete functions such as automatic power on / off and welcoming / sending off guests.

[0038] In some embodiments, light strips, screens, and speakers can be added to the electric piano to perform functions such as welcoming guests, sending off guests, and indicating the status to the user, based on control signals issued by the main control module.

[0039] The screen can be an external electronic display device.

[0040] For example, when the recognition and detection module detects a user approaching, it can send a user proximity signal to the main control module, which then issues a control signal (such as "Welcome"). At this time, the light strip can light up (e.g., lighting up in a flowing light pattern from the center to both sides, in a warm white color, gradually slowing down, and finally maintaining a breathing effect after being fully lit). The screen can display a welcome animation (e.g., musical notes floating in) and the text "Welcome back!". The speakers can play a chord (e.g., a C major arpeggio, with the volume gradually increasing and then decreasing).

[0041] In some embodiments, after the recognition module detects that a user is approaching, it sends a user approach signal to the main control module. The main control module unlocks the electric piano to make it available and performs the welcoming function, turning on the light strip or displaying a welcoming image on the screen, and driving the execution of welcoming actions such as opening the lid and raising the speakers.

[0042] For example, when the recognition and detection module detects that a user has left for more than a certain period of time (e.g., 5 minutes), it can send a user departure signal to the main control module, which then issues a control signal (e.g., "Farewell"). At this time, the light strip can turn off (gradually from both sides towards the middle, accompanied by a full blue breath of the light strip before turning completely off). The screen can display "Goodbye!", and then turn off after 3 seconds. The speakers can play a farewell sound effect (e.g., playing a descending scale with the volume gradually decreasing).

[0043] In some embodiments, when the recognition module detects that the user has left, it sends a user departure signal to the main control module. The main control module then turns off the electric piano to make it unusable and performs the farewell function. The light strip or screen displays the farewell image and then turns off. The drive motor performs farewell actions such as closing the lid and lowering the speakers.

[0044] In some embodiments, the identification and detection module employs at least one of an infrared sensor, an ultrasonic sensor, a millimeter-wave radar, and a camera.

[0045] In some embodiments, the system further includes: The locking module is used to control the segmented drive module to fix the cover module when the cover module is detected to have reached the predetermined position.

[0046] Please see Figure 7 The present invention also provides an automatic sensing control method for an electric piano, applied to an electric piano, the method comprising: S1, detect whether a user is approaching or leaving in front of the electric piano; S2, when the system detects that a user is approaching or leaving in front of the electric piano, a behavior signal is sent to the main control module; the main control module responds to the behavior signal by issuing a control signal; S3, switch the state of the external device of the electric piano according to the control signal; the external device includes: a segmented drive module and a cover plate module, wherein the control signal is at least used to drive the segmented drive module to drive the cover plate module to a predetermined position; the state of the external device includes: an on state and a off state.

[0047] In some embodiments, the external device further includes at least one of: a light strip, a screen, and a speaker; the light strip is disposed on the electric piano; the screen is disposed on the cover module; and the speaker is disposed inside the electric piano.

[0048] In some embodiments, the main control module is a microcontroller unit or a system-on-a-chip.

[0049] In some embodiments, at least one of an infrared sensor, an ultrasonic sensor, a millimeter-wave radar, and a camera is used to identify whether a user is approaching or leaving in front of the electric piano.

[0050] In some embodiments, the method further includes: When the cover plate module is detected to have reached the predetermined position, the segmented drive module is controlled to fix the cover plate module.

[0051] like Figure 2 and Figure 4 As shown, in this embodiment, an electric piano is provided, including: a piano stand 1, on which piano keys 6, a cover plate module 2, a connector 3, and a segmented drive module 4 are provided; wherein, the segmented drive module 4 includes: a guide rail 43, a first connecting rod 431, a second connecting rod 432, and a motor unit 42; a limit member 44 is provided at the rear end of the guide rail 43.

[0052] The guide rail 43 is provided with a first slider 433 and a second slider 434 respectively; and the first end of the first connecting rod 431 and the first end of the second connecting rod 432 are respectively connected to the first slider 433 and the second slider 434.

[0053] The second end of the first connecting rod 431 and the second end of the second connecting rod 432 are respectively hinged to the connecting member 3, and the connecting member 3 is connected to the cover plate module 2.

[0054] The output end of the motor unit 42 is connected to the first slider 433.

[0055] In this embodiment, the cover module 2 serves as the key cover for the digital piano, improving upon the existing function of key covers in protecting the keys. The segmented drive module 4 is located on the left and right sides of the keys 6 (on the piano stand 1). The cover module 2 moves via the connecting member 3, while the segmented drive module 4 drives the translation and rotation of the connecting member 3. The motor unit serves as the driving device for moving the first connecting rod. (See [reference needed]). Figure 3 .

[0056] In this embodiment, the first end of the first link refers to the end of the first link that is close to the cover plate module, and the second end of the second link refers to the other end relative to the first end of the first link.

[0057] The automatic opening process of the cover plate module of this invention: When the cover plate module 2 is in the first movement stage (e.g.) Figure 1 (As shown in the closed state of the cover module), the motor unit 42 drives the first slider 433 to move along the front end of the guide rail 43 to the rear end of the guide rail 43. At this time, the second connecting rod 432 moves synchronously toward the rear end of the guide rail 43 under the driving action of the first connecting rod 431. At this time, the connecting piece 3 moves backward along the direction of the guide rail 43; the cover module 2 moves with the connecting piece 3 to expose the piano key 6.

[0058] When the second slider 434 abuts against the limiting member 44, the cover plate module 2 enters the second movement stage from the first movement stage. At this time, the second end of the second connecting rod 432 remains fixed in position under the action of the limiting member, while the first connecting rod 431 continues to move towards the rear end of the guide rail. Simultaneously, the second ends of the first connecting rod 431 and the second ends of the second connecting rod 432 rotate relative to the connecting member 3, so that the connecting member 3 rotates relative to the horizontal plane. That is, at this time, the connecting member 3 switches from translational motion to rotation.

[0059] In this embodiment, the opening of the cover module consists of two movements: translation and rotation. In the translation phase (the first movement phase as referred to in this invention), the first slider, which drives the first connecting rod, and the second slider, which drives the second connecting rod, slide simultaneously until the second slider reaches the limiting member. During this phase, the cover module translates, revealing the piano keys. In the rotation phase (the second movement phase as referred to in this invention), when the second slider stops sliding due to the obstruction of the limiting member, the first slider continues to slide. The connecting member hinged to the first and second connecting rods begins to tilt and rotate, causing the rear end of the cover module to rotate around the front end, i.e., the rear end of the cover module tilts upwards (correspondingly, the closing of the cover module is the opposite of the opening process). See [link to relevant documentation]. Figure 5 The segmented movement of the connecting piece is achieved through the movable arrangement of the first and second sliders.

[0060] In this embodiment, two strokes, translation and rotation, are specially designed for opening the cover module. The cooperation between these translation and rotation strokes can reduce the external space required for the cover to open and close, thereby avoiding the cover module from occupying too much space above the piano.

[0061] For example, from a spatial planning perspective, the translation-to-rotation switching mode in this embodiment directly utilizes the original spatial planning of the piano. Specifically, in common digital pianos, the space behind the keys is usually relatively more spacious (e.g., there may be some relatively empty, unused space behind the keys). In this application, by connecting translation and rotation, the rotation task is arranged in the relatively spacious, less utilized rear area. This avoids the problem of accidentally touching the keys if the cover is not high enough when starting rotation too early.

[0062] At the same time, since the back of a piano is usually against a wall or in an area with less activity during daily use, the rotation is moved to the rear by shifting the rotation activity that is easy to consume dynamic space to this rear area where the space is used less.

[0063] Furthermore, this embodiment utilizes a dual-connector configuration, employing both front and rear connectors, with the rear connector (the second connector) initially maintaining a certain distance from the limiting member. This allows for a simple implementation of segmented motion from translation to rotation within the same drive system. In other words, the cover plate module in this application exhibits a trajectory of sliding followed by flipping.

[0064] It should be noted that the cover module in this embodiment can be used for both traditional grand pianos and upright pianos, as well as electronic pianos. The term "electronic piano" in this article refers to a piano equipped with an electrically operated cover, and is not limited to any specific type of piano.

[0065] From another perspective, this invention, based on the structure of an electric piano, uses a segmented design for the cover module, employing only translation and rotation to achieve automatic opening and closing. In this invention, the cover module first translates, allowing it to make way for the space required for rotation. Then, one end of the cover module rotates, eliminating the need for additional external clearance. This two-stage movement process avoids the cover module's rotation operation occupying excessive space, thus improving space utilization.

[0066] In some embodiments, the first end of the second connecting rod 432 is hinged to the second slider 434.

[0067] In some embodiments, the length of the first link 431 is less than the length of the second link 432.

[0068] In this embodiment, the two ends of the second link are hinged to the connector and the second slider, respectively. During the rotation phase, the second link rotates upward, thereby forming a height difference with the first link. This height difference allows the connector to rotate at a larger angle.

[0069] In some embodiments, the second link 432 is an arc-shaped component that bends toward the first link 431. That is, in this embodiment, the first link can be a straight rod, while the second link can be a curved rod. The combination of straight and curved rods achieves the purpose of translation followed by rotation. Alternatively, using dissimilar links makes it easier to implement segmented motion design.

[0070] In particular, the second link is designed to be arc-shaped, which further saves the space required during rotation.

[0071] In this embodiment, a support rod and a bent rod work together, wherein the bent rod at the rear end cooperates to make the connecting member maintain a relatively stable translation during the first movement phase.

[0072] In some embodiments, during the first movement phase, the change in distance between the first slider 433 and the second slider 434 is less than 5% of the original initial distance; during the second movement phase, the distance between the first slider 433 and the second slider 434 shows a decreasing trend.

[0073] In this embodiment, the cover module achieves opening through two stages: translation and rotation. Correspondingly, the closing process is the reverse. During the translation stage, the first and second sliders move simultaneously on the guide rail. It can be understood that during this process, the distance between the first and second sliders is approximately the same, meaning the change in distance between them is less than 5% of their initial distance. During the rotation stage, due to the action of the limiting component, the second slider stops sliding, and the first slider continues to slide towards the second slider. This causes the connecting piece to rotate and form an angle with the horizontal plane.

[0074] In some embodiments, the cover module 2 includes: a lower speaker shell 21 fixedly connected to the connector 3 and capable of covering the piano keys 6, and an upper speaker shell 22 covering the lower speaker shell 21. The cover module 2 further includes: a speaker 23 disposed on the upper speaker shell 22 and used for playing piano sounds.

[0075] In this embodiment, the lower shell of the speaker is used as the key cover of the piano keys, the connector 3 is set inside the lower shell of the speaker, and multiple reinforcing ribs are provided inside the lower shell of the speaker.

[0076] In this embodiment, the cover module of the present invention further integrates the sound-generating unit onto the key cover. Specifically, compared to current digital pianos where the sound-generating unit is fixed to the piano body and the sound propagation direction is fixed (up, down, forward, backward), users of different heights find it difficult to obtain the optimal sound experience. In the rotating phase of the key cover of the digital piano of the present invention, the tilt angle of the key cover can be adjusted according to different heights. For example, for taller users, the tilt angle of the key cover is smaller relative to the horizontal plane, so that the user's ears are directly facing the direction of sound propagation.

[0077] In some embodiments, the cover module further includes a speaker decorative cover 24, which is fixed to the speaker upper shell 22 by a quick-release structure.

[0078] In some embodiments, the motor unit 42 includes: a lead screw 421 connected to the first slider 433 and capable of moving the first slider 433 along the guide rail 43, and a drive mechanism rotatably connected to the lead screw 421.

[0079] In this embodiment, the motor unit uses a lead screw connection to drive the first slider to move along the guide rail.

[0080] In some embodiments, a groove 7 extending along the length of the key 6 is provided on the piano stand 1 near the rear end of the key 6, and the front end of the cover plate module 2 after tilting is located at the rear end of the groove 7.

[0081] In this embodiment, the mating structure of the groove and the inclined key cover can serve as a music stand for an electric piano. The music sheet is placed in the groove, and the key cover, which is inclined relative to the horizontal plane on the back side of the groove, can serve as a support surface for the music sheet.

[0082] The cover module of this invention integrates the multifunctional requirements of an automatically opening and closing piano key cover, an adjustable playback angle speaker, and a music stand into a single structure based solely on a change in the rotation method.

[0083] In some embodiments, a sensor 5 is provided at the front end of the piano stand 1 near the piano keys 6. The sensor 5 is electrically connected to the segmented drive module 4. When a human body approaches the piano stand 1, the segmented drive module 4 drives the cover plate module 2 to move to expose the piano keys 6.

[0084] In this embodiment, a sensor is placed at the middle position of the front end of the piano stand, so as to control the segmented drive module to open the cover module when a human body is sitting on the electric piano.

[0085] In some embodiments, the electric piano further includes a mounting base 41 fixed to the piano stand 1, wherein one end of the mounting base 41 extending along the direction of the guide rail 43 is fixed to the guide rail 43, such that the guide rail 43 is away from the surface of the piano stand 1.

[0086] In this embodiment, the mounting base is used to fix the motor unit and the guide rail, so that the first link and the second link can move stably on the guide rail.

[0087] Example 2: This embodiment provides another automatic opening and closing device for a cover plate module, which will be described below with reference to specific embodiments.

[0088] An automatic opening and closing device for a cover plate module according to this embodiment includes: a cover plate module 2 for closing the opening above the piano key 6, and a segmented drive module 4; wherein, the segmented drive module 4 includes: a guide rail 43, a first connecting rod 431, a second connecting rod 432, and a motor unit 42. The second ends of the first connecting rod 431 and the second connecting rod 432 are respectively hinged to the cover plate module 2; the first ends of the first connecting rod 431 and the second ends of the second connecting rod 432 are respectively slidably connected to the guide rail 43. The output end of the motor unit 42 is connected to the first connecting rod 431.

[0089] When the cover plate module 2 is in the first movement stage, the motor unit 42 drives the first connecting rod 431 to move along the front end of the guide rail 43 to the rear end of the guide rail 43. At this time, the second connecting rod 432 moves synchronously toward the rear end of the guide rail 43 under the driving action of the first connecting rod 431. At this time, the cover plate module 2 moves with the first connecting rod 431 and the second connecting rod 432 to expose the piano key 6. When the second connecting rod 432 moves to the first position of the guide rail 43 and stops sliding, the cover plate module 2 enters the second movement stage from the first movement stage. At this time, the second end of the first connecting rod 431 and the second end of the second connecting rod 432 rotate relative to the cover plate module 2, so that the cover plate module 2 rotates relative to the horizontal plane.

[0090] In this embodiment, the opening of the cover module consists of two processes: translation and rotation. During the translation phase (first movement phase), the first and second connecting rods slide simultaneously until the second connecting rod reaches the first position; during this phase, the cover module translates. During the rotation phase (second movement phase), when the second connecting rod stops sliding due to the obstruction of the limiting structure, the first connecting rod continues to slide. The cover module, hinged to the first and second connecting rods, begins to tilt and rotate, causing the rear end of the cover module to rotate around the front end, i.e., the rear end of the cover module tilts upwards (correspondingly, the closing of the cover module is the opposite of the opening process).

[0091] In this embodiment, the first position refers to the position where the second link stops moving after reaching that position on the guide rail. Specifically, a structure is provided at this position to prevent the second link from moving. For example, it could be a limiting block as in Embodiment 1, or other structures that restrict movement.

[0092] In this embodiment, the cover plate module is hinged to the first and second connecting rods, thereby enabling the cover plate module to move. Unlike in Embodiment 1, no connecting member is required; that is, there is no need to connect the cover plate module to the first and second connecting rods via a connecting member.

[0093] In some embodiments, the first end of the second link 432 is hinged to the guide rail 43.

[0094] In this embodiment, the first ends of the first link and the second link are directly connected to the guide rail. Of course, in other embodiments, the first link and the second link and the guide rail are connected by a slider as a connection structure between the two structures (the guide rail and the first link and the second link).

[0095] In this embodiment, both the first link and the second link are straight rods, that is, the line connecting the first end connected to the guide rail and the second end connected to the cover plate module is a straight line.

[0096] In some embodiments, the length of the first link 431 is less than the length of the second link 432.

[0097] In some embodiments, during the first movement phase, the change in distance between the first link 431 and the second link 432 is less than 5% of the original initial distance (which can be regarded as the relative distance between the first link and the second link remaining unchanged); during the second movement phase, the distance between the first link 431 and the second link 432 shows a decreasing trend.

[0098] In some embodiments, the cover module 2 includes: a lower speaker shell 21 fixedly connected to the first connecting rod 431 and the second connecting rod 432 and covering the piano key 6, and an upper speaker shell 22 covering the lower speaker shell 21. The cover module 2 further includes: a speaker 23 disposed on the upper speaker shell 22 and used for playing piano sounds.

[0099] In some embodiments, the motor unit 42 includes: a lead screw 421 connected to a first end of the first connecting rod 431 and capable of moving the first connecting rod 431 along the guide rail 43, and a drive mechanism rotatably connected to the lead screw 421.

[0100] Example 3 This embodiment provides another electric piano, including: a piano stand 1, piano keys 6 disposed on the piano stand 1, and an automatic opening and closing device for the cover module, as described in Embodiment 2 above, disposed on the piano stand 1 and located at both ends of the piano keys.

[0101] In some embodiments, a groove 7 extending along the length of the key 6 is provided on the piano stand 1 near the rear end of the key 6, and the front end of the cover plate module 2 after tilting is located at the rear end of the groove 7.

[0102] In some embodiments, a sensor 5 is provided at the front end of the piano stand 1 near the piano keys 6. The sensor 5 is electrically connected to the segmented drive module 4. When a human body approaches the piano stand 1, the segmented drive module 4 drives the cover plate module 2 to move to expose the piano keys 6.

[0103] In some embodiments, the electric piano further includes a mounting base 41 fixed to the piano stand 1, wherein one end of the mounting base 41 extending along the direction of the guide rail 43 is fixed to the guide rail 43.

[0104] In some embodiments, this application also provides a schematic block diagram of the structure of a computer device, please see... Figure 8 Computer programs can be used in situations such as Figure 8 It runs on the computer device shown. Figure 8As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The memory may include non-volatile storage media and internal memory. The non-volatile storage media may store an operating system and computer programs. The computer programs include program instructions that, when executed, cause the processor to perform arbitrary methods. The processor provides computational and control capabilities to support the operation of the entire computer device. The internal memory provides an environment for the execution of the computer programs in the non-volatile storage media; when executed by the processor, these programs cause the processor to perform arbitrary methods. The network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 8 The structures shown are merely block diagrams of a portion of the structure related to the present application and do not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than shown in the figures, or combine certain components, or have different component arrangements. It should be understood that the processor may be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0105] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0106] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. An automatic sensing control system for an electric piano, applied to an electric piano, characterized in that, The system includes: The identification and detection module is used to identify whether a user is approaching or leaving in front of the electric piano; The signal transmission module is used to send a behavior signal to the main control module when the recognition and detection module detects that a user is approaching or leaving in front of the electric piano; the main control module responds to the behavior signal by issuing a control signal. A function execution module is used to switch the state of the external devices of the electric piano according to the control signal; the external devices include: a segmented drive module and a cover plate module, wherein the control signal is at least used to drive the segmented drive module to drive the cover plate module to a predetermined position; the state of the external devices includes: an on state and an off state; The segmented driving module (4) includes: Guide rail (43), first link (431), second link (432), motor unit (42); The guide rail (43) is provided with a limit member (44) at its rear end; a first slider (433) and a second slider (434) are respectively provided on the guide rail (43); and the first end of the first connecting rod (431) and the first end of the second connecting rod (432) are respectively connected to the first slider (433) and the second slider (434); The second end of the first connecting rod (431) and the second end of the second connecting rod (432) are respectively hinged to the connecting member (3), and the connecting member (3) is connected to the cover plate module (2); The output end of the motor unit (42) is connected to the first slider (433); When the cover plate module (2) is in the first movement stage, the motor unit (42) drives the first slider (433) to move along the front end of the guide rail (43) to the rear end of the guide rail (43). At this time, the second connecting rod (432) moves synchronously toward the rear end of the guide rail (43) under the driving action of the first connecting rod (431). At this time, the connecting piece (3) moves backward along the direction of the guide rail (43). When the second slider (434) abuts against the limiting piece (44), the cover plate module (2) enters the second movement stage from the first movement stage. At this time, the second end of the first connecting rod (431) and the second end of the second connecting rod (432) rotate relative to the connecting piece (3) so that the connecting piece (3) rotates relative to the horizontal plane.

2. The automatic sensing control system for an electric piano according to claim 1, characterized in that, The external device further includes at least one of: a light strip, a screen, and a speaker; the light strip is disposed on the electric piano; the screen is disposed on the cover module; and the speaker is disposed inside the electric piano.

3. The automatic sensing control system for an electric piano according to claim 1, characterized in that, The main control module uses a microcontroller unit or a system-on-a-chip.

4. The automatic sensing control system for an electric piano according to claim 1, characterized in that, The identification and detection module employs at least one of the following: infrared sensor, ultrasonic sensor, millimeter-wave radar, and camera.

5. The automatic sensing control system for an electric piano according to claim 1, characterized in that, The system also includes: The locking module is used to control the segmented drive module to fix the cover module when the cover module is detected to have reached the predetermined position.

6. An automatic sensing control method for an electric piano, applied to an electric piano, characterized in that, The method includes: S1, detect whether a user is approaching or leaving in front of the electric piano; S2, when the system detects that a user is approaching or leaving in front of the electric piano, a behavior signal is sent to the main control module; the main control module responds to the behavior signal by issuing a control signal; S3, switch the state of the external device of the electric piano according to the control signal; the external device includes: a segmented drive module and a cover plate module, wherein the control signal is at least used to drive the segmented drive module to drive the cover plate module to a predetermined position; the state of the external device includes: an on state and a off state; The segmented driving module (4) includes: Guide rail (43), first link (431), second link (432), motor unit (42); The guide rail (43) is provided with a limit member (44) at its rear end; a first slider (433) and a second slider (434) are respectively provided on the guide rail (43); and the first end of the first connecting rod (431) and the first end of the second connecting rod (432) are respectively connected to the first slider (433) and the second slider (434); The second end of the first connecting rod (431) and the second end of the second connecting rod (432) are respectively hinged to the connecting member (3), and the connecting member (3) is connected to the cover plate module (2); The output end of the motor unit (42) is connected to the first slider (433); When the cover plate module (2) is in the first movement stage, the motor unit (42) drives the first slider (433) to move along the front end of the guide rail (43) to the rear end of the guide rail (43). At this time, the second connecting rod (432) moves synchronously toward the rear end of the guide rail (43) under the driving action of the first connecting rod (431). At this time, the connecting piece (3) moves backward along the direction of the guide rail (43). When the second slider (434) abuts against the limiting piece (44), the cover plate module (2) enters the second movement stage from the first movement stage. At this time, the second end of the first connecting rod (431) and the second end of the second connecting rod (432) rotate relative to the connecting piece (3) so that the connecting piece (3) rotates relative to the horizontal plane.

7. The automatic sensing control method for an electric piano according to claim 6, characterized in that, The external device further includes at least one of: a light strip, a screen, and a speaker; the light strip is disposed on the electric piano; the screen is disposed on the cover module; and the speaker is disposed inside the electric piano.

8. The automatic sensing control method for an electric piano according to claim 6, characterized in that, The main control module uses a microcontroller unit or a system-on-a-chip.

9. The automatic sensing control method for an electric piano according to claim 6, characterized in that, The system uses at least one of infrared sensors, ultrasonic sensors, millimeter-wave radar, and cameras to identify whether a user is approaching or leaving in front of the electric piano.

10. The automatic sensing control method for an electric piano according to claim 6, characterized in that, The method further includes: When the cover plate module is detected to have reached the predetermined position, the segmented drive module is controlled to fix the cover plate module.

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