Non-contact web drum dancer

Abstract

The present application relates to the technical field of electroacoustic musical instrument, in particular to a non-contact net drum disc, which comprises a net drum body, the net drum body comprises a disc, a drum skin arranged at the upper end of the disc and a data acquisition module arranged in the disc and below the middle part of the drum skin, the data acquisition module comprises a conducting medium and a trigger arranged below the conducting medium, the conducting medium is sequentially connected with a buffer component, a magnetic component and a support from top to bottom, the support comprises a vibrating sheet fixedly connected to the disc and having elasticity, the trigger comprises a Hall sensor arranged below the vibrating sheet and non-contact matched with the magnetic component; since the Hall sensor is arranged below the support and does not directly contact with the conducting medium, the damage of the Hall sensor can be reduced, and the magnetic component arranged on the support reduces the body noise generated during knocking relative to the magnetic component arranged between the two drum surfaces.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic musical instrument technology, specifically to a non-contact mesh drum plate. Background Technology

[0002] The mesh electronic drum is a commonly used electronic percussion instrument, typically consisting of a drumhead, drum skin, data acquisition module, and data processing module. The drum skin comprises a drum ring and a drumhead, with the drum ring securing the drumhead to the drumhead. The drumhead is composed of two layers of mesh. The data acquisition module includes a trigger and a conductive medium. The trigger uses a piezoelectric ceramic buzzer, and the conductive medium is an elastic buffer component located between the lower mesh layer and the piezoelectric ceramic buzzer. The elastic buffer component contacts both the lower mesh layer and the piezoelectric ceramic buzzer, which is connected to the data processing module. When the user strikes the drumhead, a mechanical signal is generated. This mechanical signal is buffered by the elastic buffer component and transmitted to the piezoelectric ceramic buzzer. The piezoelectric ceramic buzzer converts the mechanical signal into an electrical signal and sends it to the data processing module. The data processing module processes the received electrical signal to generate an audio signal for output.

[0003] In traditional mesh electronic drums, the piezoelectric ceramic buzzer, which acts as a trigger, receives mechanical signals and generates electrical signals through direct contact with an elastic buffer component, which acts as a conductive medium. This type of mesh electronic drum is a contact-type mesh electronic drum. The elastic buffer component transmits the mechanical signals generated by striking the drum surface. Since the elastic buffer component is made of elastic material, long-term pressure can cause its dimensions to change, resulting in poor contact with the mesh surface. Consequently, the mechanical signals cannot be transmitted or are weakened, ultimately leading to poor audio signals generated by the electronic drum.

[0004] Therefore, the prior art CN106531139A proposes a mesh electronic drum in which the trigger and the conductive medium do not directly contact each other. The conductive medium of this non-contact mesh electronic drum is a magnetic component, and the trigger is a Hall sensor. Inside the drum disk of this non-contact mesh electronic drum, there is a large iron disk. On the upper surface of the large disk, there is a columnar flexible material that wraps the Hall sensor. The magnetic component is disposed between the two drum surfaces. This non-contact mesh electronic drum generates an audio voltage signal through non-contact matching between the magnetic component and the Hall sensor. Since the trigger and the conductive medium do not directly contact each other, there will be no poor contact phenomenon.

[0005] However, this non-contact mesh electronic drum still has the following defects: 1. The large iron disc is relatively hard and the distance between it and the mesh surface is short, resulting in a large instantaneous downward pressure when struck, which will generate some noise during use; 2. The columnar flexible material is adhered to the large disc, which is prone to tilting during production and transportation. Since the Hall sensor is located inside the flexible material, it is easy to damage the Hall sensor during the striking process; 3. The magnetic component is located between the two drum surfaces, which will generate some noise when struck. Summary of the Invention

[0006] To address the shortcomings of the aforementioned large iron disc, which is relatively hard and has a short distance from the mesh surface, resulting in a large instantaneous downward pressure when struck, thus generating significant noise during use; the columnar flexible material adhered to the large disc, making it prone to tilting during production and transportation, and easily damaging the Hall sensor during strikes; and the magnetic component located between the two drum surfaces, which also generates noise during strikes, this invention provides a non-contact mesh drum disc that reduces noise and lowers the damage rate of the Hall sensor.

[0007] A non-contact mesh drum disc includes a mesh drum body, the mesh drum body including a drum disc, a drumhead disposed at the upper end of the drum disc, and a data acquisition module disposed inside the drum disc and located below the middle of the drumhead. The data acquisition module includes a conductive medium and a trigger disposed below the conductive medium. The conductive medium is connected in layers from top to bottom with a buffer component, a magnetic component, and a support component. The support component includes an elastic vibrating plate fixedly connected to the drum disc. The trigger includes a Hall sensor disposed below the vibrating plate and non-contactly matched with the magnetic component.

[0008] Advantages and beneficial effects of the present invention: A non-contact mesh drum disc that reduces noise and damage to Hall sensors includes a mesh drum body, a drum disc, a drumhead mounted on the drum disc, and a data acquisition module located inside the drum disc and below the center of the drumhead. The data acquisition module includes a conductive medium and a trigger mounted below the conductive medium. The conductive medium consists of a buffer component, a magnetic component, and a support component stacked sequentially from top to bottom. When a user strikes the drumhead, the vibration is transmitted to the buffer component, where the amplitude of the vibration is reduced after a certain buffering, and then transmitted to the magnetic component. Finally, the vibration is transmitted to the support component, which is mounted on the support component and vibrates along with it. The trigger includes a Hall sensor located below the support component and non-contactly matched with the magnetic component. After receiving the vibration from the magnetic component, the Hall sensor converts the vibration signal into an electrical signal and sends it to the control board. Because the Hall sensor is located below the support component and does not directly contact the conductive medium, damage to the Hall sensor can be reduced. Furthermore, the magnetic component mounted on the support component reduces the body noise generated during striking compared to the magnetic component located between the two drumhead layers.

[0009] Preferably, the support further includes several fixing screws, and the vibrating plate includes a base and several fixing feet circumferentially distributed on the outer edge of the base and extending outward. Each fixing foot has a through hole on one side for the screw rod of the fixing screw to pass through. With this configuration, the support includes a vibrating plate for supporting the buffer and magnetic components, and several fixing screws. Replacing the large disc of the prior art with a vibrating plate effectively reduces the volume of the support, ultimately reducing its overall weight. This also prevents excessive downward pressure during vibration transmission and reduces noise.

[0010] Preferably, the magnetic component includes a magnet, a first double-sided adhesive tape for fixing the magnet to the vibrating plate, and a buffer ring, wherein the buffer ring has a through groove in its center for placing the magnet. This arrangement allows the buffer ring to have a through groove for placing the magnet, and the magnet is fixed to the support member by the first double-sided adhesive tape. Furthermore, placing the magnet in the through groove further restricts its movement.

[0011] Preferably, the buffer component includes at least three interconnected, stacked buffer pads and a second double-sided sticker disposed between the buffer pads and the drumhead. The second double-sided sticker connects the buffer pads and the drumhead. This design, with its three stacked buffer pads, effectively reduces the vibration from the drumhead before transmitting it to the support, causing the magnets mounted on the support to vibrate. The second double-sided sticker connects the buffer pads and the drumhead, ensuring that the transmission of striking vibrations is not distorted, effectively transmitting vibrations regardless of where the strike occurs on the drumhead.

[0012] Preferably, the vibrating disc is made of PC material. This design gives PC material high strength, high elastic modulus, high impact strength, wide operating temperature range, high transparency, easy dyeing, low molding shrinkage, good dimensional stability, good fatigue resistance, good weather resistance, excellent electrical properties, good impact resistance and transparency, and the ability to remain transparent without deformation after washing with hot water and corrosive solutions. Furthermore, it offers a higher cost-performance ratio compared to existing iron disc designs, reducing manufacturing costs.

[0013] Preferably, the trigger further includes a PCB board, and the Hall sensor is disposed on the lower surface of the PCB board. This arrangement allows the PCB board to be directly fixed below the support without contacting it. Disposing of the Hall sensor on the PCB board serves two purposes: first, the rigidity of the PCB board effectively secures and protects the Hall sensor, preventing drumhead deformation from prolonged striking or direct impact on the PCB board when the drumhead tension is not properly adjusted, thus avoiding significant mechanical noise; second, the electrical signal from the Hall sensor can be transmitted to the data acquisition module via the inner circuitry of the PCB board.

[0014] Preferably, the non-contact mesh drum plate further includes a data processing module electrically connected to the data acquisition module. The data processing module includes a drum plate input circuit, an input terminal separation circuit, a signal processing circuit, a digital-to-analog conversion circuit, a control circuit, a DSP data processing circuit, a sound source storage circuit, an analog-to-digital conversion circuit, and a post-amplification circuit. The output terminal of the drum plate input circuit is connected to the input terminal of the input terminal separation circuit, the output terminal of the input terminal separation circuit is connected to the input terminal of the signal processing circuit, the output terminal of the signal processing circuit is connected to the input terminal of the control circuit, the output terminal of the control circuit is connected to the input terminal of the DSP data processing circuit, the output terminal of the DSP data processing circuit is connected to the input terminal of the sound source storage circuit, the output terminal of the sound source storage circuit is connected to the input terminal of the analog-to-digital conversion circuit, the output terminal of the analog-to-digital conversion circuit is connected to the input terminal of the post-amplification circuit, and the output terminal of the post-amplification circuit outputs an audio signal. With this setup, the data processing module includes a drum input circuit, an input separation circuit, a signal processing circuit, a digital-to-analog converter circuit, a control circuit, a DSP data processing circuit, a sound source storage circuit, an analog-to-digital converter circuit, and a post-amplification circuit. The output of the drum input circuit is connected to the input of the input separation circuit; the output of the input separation circuit is connected to the input of the signal processing circuit; the output of the signal processing circuit is connected to the input of the control circuit; the output of the control circuit is connected to the input of the DSP data processing circuit; the output of the DSP data processing circuit is connected to the input of the sound source storage circuit; the output of the sound source storage circuit is connected to the input of the analog-to-digital converter circuit; and the output of the analog-to-digital converter circuit is connected to the input of the post-amplification circuit. When the post-amplification circuit outputs an audio signal, it can process the audio voltage signal provided by the Hall sensor as the magnetic range changes to obtain the desired audio signal. The signal processing circuit can amplify the smaller audio voltage signal provided by the Hall sensor due to its small change in magnetic range, making it meet the requirements of the audio input signal.

[0015] Preferably, the drum input circuit includes a Hall sensor IC1, a capacitor C1, and a terminal CN1. The terminal CN1 includes a connector PIN1 and a connector PIN2. The Hall sensor IC1 includes a sensor VCC terminal, a sensor OUT terminal, and a sensor GND terminal. The connector PIN1 is connected to one end of the capacitor C1 and the sensor VCC terminal, and the other end of the capacitor C1 is connected to the sensor OUT terminal. The connector PIN2 is grounded and connected to the sensor GND terminal. The input terminal separation circuit includes a terminal CN2, a power supply lead A, a voltage VCC, a resistor R1, a GND lead C, and a sampling output line B. The terminal CN2 includes connectors PIN3 and PIN4. The voltage VCC and the power supply lead A are connected to one end of the resistor R1. The other end of the resistor R1 and the sampling output line are connected to connector PIN3. The GND lead C is grounded and connected to connector PIN4. Connector PIN1 is connected to connector PIN3, and connector PIN2 is connected to connector PIN4. This setup reduces the original three wires (power line, sampling output line, and ground line) to two (power lead A and sampling output line B, with the GND lead being an internal power supply line on the PCB), reducing the use of cables and production line processing steps, thus lowering manufacturing and material costs.

[0016] Preferably, the signal processing circuit includes an input terminal IN, an output terminal OUT, capacitors C2, C3, and C4, resistors R2, R3, R4, R5, R6, and R7, a comparator U1A, diodes D1, D2, and D3. The comparator includes comparator 1, comparator 2, and comparator 3 terminals. The input terminal IN is connected to one end of capacitor C2. The other end of capacitor C2 and one end of resistor R3 are connected to one end of resistor R7. The other end of resistor R7 is grounded and connected to comparator 3 terminal. The comparator 1 terminal and one end of resistor R5... The negative terminals of diodes D2 and D3 are connected together. The positive terminal of D3 is connected to one end of resistor R6. The other end of resistor R6 is connected to one end of resistor R8, one end of capacitor C4, and one end of capacitor C3. The other end of capacitor C3 is connected to the output terminal OUT. The other end of R8 is grounded and connected to the other end of capacitor C4. The other end of resistor R3 is connected to one end of resistor R2, one end of resistor R4, and comparator 2. The other end of resistor R2 is connected to the other end of resistor R4, the other end of resistor R5, the positive terminal of diode D1, and the positive terminal of diode D2. With this configuration, compared to existing signal processing circuits, the signal processing circuit of this application adds a filtering function, isolating the sampled signal to prevent interference. Attached Figure Description

[0017] Figure 1 This is an exploded view of a non-contact mesh drum disc according to the present invention;

[0018] Figure 2 This is a structural diagram of a buffer component for a non-contact mesh drum disc according to the present invention;

[0019] Figure 3 This is a structural diagram of the magnetic component of a non-contact mesh drum disc according to the present invention;

[0020] Figure 4 This is a structural diagram of a support member for a non-contact mesh drum disc according to the present invention;

[0021] Figure 5 This is a half-sectional view of a non-contact mesh drum disc according to the present invention;

[0022] Figure 6 This is a schematic diagram of a data processing module for a non-contact wire mesh drum of the present invention;

[0023] Figure 7 This is a circuit diagram of the drum input circuit for a non-contact mesh drum of the present invention;

[0024] Figure 8 This is a circuit diagram of an input terminal separation circuit for a non-contact mesh drum disc according to the present invention;

[0025] Figure 9 This is a circuit diagram of a signal processing circuit for a non-contact mesh drum disc according to the present invention.

[0026] 1. Drum body; 2. Drum plate; 3. Drumhead; 4. Trigger; 5. Conducting medium; 401. Hall sensor; 402. PCB board; 501. Buffer component; 502. Magnetic component; 503. Support component; 5011. Buffer pad; 5012. Second double-sided sticker; 5021. Magnet; 5022. First double-sided sticker; 5023. Buffer ring; 5024. Through slot; 5031. Vibrating plate; 5032. Base; 5033. Fixing foot; 5034. Through hole. Detailed Implementation

[0027] like Figure 1As shown, a non-contact mesh drum disc with noise reduction and reduced damage to Hall sensors includes a mesh drum body 1. The mesh drum body 1 includes a drum disc 2, a drumhead 3 disposed on the drum disc 2, and a data acquisition module disposed within the drum disc 2 and below the drumhead 3. The data acquisition module includes a conductive medium 5 and a trigger 4 disposed below the conductive medium 5. The conductive medium 5 has a buffer component 501, a magnetic component 502, and a support component 503 stacked sequentially from top to bottom. When the user strikes the drumhead, the vibration is transmitted to the buffer component 501, where the vibration amplitude is reduced after a certain buffering, and then transmitted to the magnetic component 502, and finally to the support component 503. 3. The magnetic component 502 is mounted on the support member 503. The support member 503 will cause the magnetic component 502 to vibrate. The trigger includes a Hall sensor located below the support member 503 and non-contactly matched with the magnetic component 502. After receiving the vibration of the magnetic component 502, the Hall sensor 401 will convert the vibration signal into an electrical signal to the control board. Since the Hall sensor 401 is located below the support member 503 and does not directly contact the conductive medium, damage to the Hall sensor 401 can be reduced. The magnetic component 502 mounted on the support member 503 reduces the body noise generated during impact compared to the magnetic component 502 mounted between the two drum surfaces.

[0028] like Figure 4 As shown, to further optimize the above solution, the vibrating plate 5031 includes a base 5032 and several fixed feet 5033 circumferentially distributed on the outer edge of the base 5032 and extending outward. Each fixed foot 5033 has a through hole 5034 on one side for the screw of the fixing screw to pass through. The support member 503 includes the vibrating plate 5031 for supporting the buffer member 501 and the magnetic member 502 and several fixing screws. Replacing the large disc of the prior art with the vibrating plate 5031 can effectively reduce the volume of the support member 503, and ultimately reduce the overall weight of the support member 503. When transmitting vibration, it will not generate excessive downward pressure and reduce the noise of the body.

[0029] like Figure 3 As shown, to further optimize the above solution, the magnetic component 502 includes a magnet 5021, a first double-sided sticker 5022 for fixing the magnet 5021 to the support member 503, and a buffer ring 5023. The buffer ring 5023 has a through groove 5024 in the middle for placing the magnet 5021. The magnet 5021 is fixed to the support member 503 by the first double-sided sticker. At the same time, placing the magnet 5021 in the through groove 5024 can further restrict the movement of the magnet 5021.

[0030] like Figure 2As shown, to further optimize the above solution, the buffer component 501 includes at least three interconnected buffer pads 5011 and a second double-sided sticker 5012 disposed between the buffer pads 5011 and the drumhead 3. The second double-sided sticker 5012 is used to connect the buffer pads 5011 and the drumhead 3. The design of the three stacked buffer pads 5011 can effectively reduce the vibration transmitted from the drumhead 3 by the layering of the buffer pads 5011 before transmitting it to the support component 503, thereby causing the magnet 5021 disposed on the support component 503 to vibrate. The second double-sided sticker is used to connect the buffer pads 5011 and the drumhead. 3. Ensures that the transmission of impact vibration is not distorted, and effectively transmits vibration regardless of where the impact is placed on the drumhead 3; the vibrating pad 5031 is made of PC material, which has the characteristics of high strength, high elasticity, high impact strength, wide operating temperature range, high transparency, free dyeing, low molding shrinkage, good dimensional stability, good fatigue resistance, good weather resistance, excellent electrical properties, good impact resistance and transparency, and does not deform and remains transparent when washed with hot water and corrosive solutions. Moreover, it has a higher cost performance than the existing iron disc design, reducing manufacturing costs.

[0031] like Figure 5 As shown, to further optimize the above scheme, the trigger also includes a PCB board 402. The Hall sensor 401 is disposed on the lower surface of the PCB board 402. The PCB board 402 is directly fixed below the support 503 and does not contact the support 503. Disposing of the Hall sensor 401 on the PCB board 402 serves two purposes: first, the rigidity of the PCB board 402 itself can effectively fix and protect the Hall sensor 401, preventing deformation of the drumhead 3 due to long-term drumhead impact or direct impact on the PCB board 402 when the drumhead 3 is not properly tensioned, thus avoiding significant mechanical noise; second, the electrical signal of the Hall sensor 401 can be transmitted to the data acquisition module through the inner circuitry of the PCB board 402. Existing Hall sensor technologies... The sensor 401 is placed in a buffer material, which is fixed to the upper surface of the iron disc. When struck, the vibration is directly transmitted to the Hall sensor 401. Since the buffer material is prone to skewing during production (generally 0.5mm to 10mm), once skewing occurs, the impact vibration can easily damage the Hall sensor 401. The defect rate due to skewing in manufacturing reaches 30% to 40%, and with transportation, the defect rate can reach 70%. In this application, the Hall sensor 401 is placed below the support 503 and does not directly contact the conductive medium 5. Therefore, it is not affected by the impact vibration, and there is no need to consider whether the buffer material is skewing. This greatly increases the convenience of production, reduces the corresponding management costs, and also reduces the damage to the Hall sensor 401.

[0032] like Figure 6As shown in the figure, this embodiment of the invention provides a non-contact mesh drum plate that reduces noise, material costs, and processing costs. The non-contact mesh drum plate also includes a data processing module electrically connected to the data acquisition module. The data processing module includes a drum plate input circuit, an input terminal separation circuit, a signal processing circuit, a digital-to-analog converter circuit, a control circuit, a DSP data processing circuit, a sound source storage circuit, an analog-to-digital converter circuit, and a post-amplification circuit. The output terminal of the drum plate input circuit is connected to the input terminal of the input terminal separation circuit; the output terminal of the input terminal separation circuit is connected to the input terminal of the signal processing circuit; and the output terminal of the signal processing circuit is connected to the input terminal of the control circuit. The control circuit's output is connected to the DSP data processing circuit's input. The DSP data processing circuit's output is connected to the audio source storage circuit's input. The audio source storage circuit's output is connected to the analog-to-digital converter's input. The analog-to-digital converter's output is connected to the subsequent signal amplification circuit's input. When the subsequent signal amplification circuit outputs an audio signal, it can process the audio voltage signal provided by the Hall sensor as the magnetic range changes to obtain the desired audio signal. The signal processing circuit can amplify the smaller audio voltage signal provided by the Hall sensor due to its small change in magnetic range, making it meet the requirements of the audio input signal.

[0033] like Figure 7 and Figure 8 As shown, to further optimize the above scheme, the drum input circuit includes a Hall sensor IC1, a capacitor C1, and a terminal CN1. Terminal CN1 includes connectors PIN1 and PIN2. The Hall sensor IC1 includes a sensor VCC terminal, a sensor OUT terminal, and a sensor GND terminal. Connector PIN1 is connected to one end of capacitor C1 and the sensor VCC terminal, and the other end of capacitor C1 is connected to the sensor OUT terminal. Connector PIN2 is grounded and connected to the sensor GND terminal. The input separation circuit includes terminal CN2, a power supply lead A, a voltage VCC line, a resistor R1, a GND lead C, and a sampling output line B. Terminal CN2 includes connectors... Pin 3 and pin 4 are connected to the power supply lead A and one end of resistor R1. The other end of resistor R1 and the sampling output line are connected to pin 3. The GND lead C is grounded and connected to pin 4. Pin 1 is connected to pin 3, and pin 2 is connected to pin 4. The original three wires (power supply line, sampling output line, and ground line) are reduced to two (power supply lead A and sampling output line B, where the GND lead is an internal PCB board supply line). This reduces the use of cables and production line processing steps, thus reducing manufacturing and material costs.

[0034] like Figure 9As shown in the figure, the contactless wire mesh drum provided by this embodiment of the invention reduces noise and interference. The signal processing circuit includes an input terminal IN, an output terminal OUT, capacitors C2, C3, and C4, resistors R2, R3, R4, R5, R6, and R7, a comparator U1A, and diodes D1, D2, and D3. The comparator includes comparator 1, comparator 2, and comparator 3 terminals. The input terminal IN is connected to one end of capacitor C2. The other end of capacitor C2 and one end of resistor R3 are connected to one end of resistor R7. The other end of resistor R7 is grounded and connected to comparator 3 terminal. The comparator 1 terminal, one end of resistor R5, the cathode of diode D2, and... The negative terminal of diode D3 is connected, and the positive terminal of D3 is connected to one end of resistor R6. The other end of resistor R6 is connected to one end of resistor R8, one end of capacitor C4, and one end of capacitor C3. The other end of capacitor C3 is connected to the output terminal OUT. The other end of R8 is grounded and connected to the other end of capacitor C4. The other end of resistor R3 is connected to one end of resistor R2, one end of resistor R4, and comparator 2. The other end of resistor R2 is connected to the other end of resistor R4, the other end of resistor R5, the positive terminal of diode D1, and the positive terminal of diode D2. Compared with the signal processing circuit of the prior art, the signal processing circuit of this application adds a filtering function, which can isolate the sampled signal to prevent interference.

[0035] The present invention has the following advantages over the prior art mesh drum: 1. The PC material support 503 has a lower material cost and generates less instantaneous downward pressure when struck compared to the iron disc of the prior art, thus resulting in very low body noise; 2. The Hall sensor 401 does not contact the conductive medium 5. When the buffer pad 5011 is tilted, no matter how the drumhead 3 is struck, it will not affect the Hall sensor 401 located below the support 503 and on the PCB board 402; 3. The magnetic component 502 is located in the through groove 5024 of the buffer ring 5023 and is fixed to the vibrating pad 5031 by the first double-sided sticker 5022. When the user strikes the drumhead 3, it causes vibration. When the vibrating plate 5031 vibrates, it will drive the magnet 5021 to vibrate as well. The magnet 5021, which is fixed to the vibrating plate 5031 by the first double-sided sticker 5022, will not make any noise. 4. The use of connecting wires is reduced. The original three wires (power line, sampling output line and ground line) are reduced to two (power lead A and sampling output line B, of which the GND lead is an internal power supply line of the internal PCB board). The use of cables and production line processing steps are reduced, thus reducing manufacturing costs and material costs. 5. The signal processing circuit of this application adds a filtering function, which can isolate the sampled signal to prevent interference and improve the user's hitting experience.

[0036] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A non-contact mesh drum disc, comprising a mesh drum body (1), wherein the mesh drum body (1) comprises a drum disc (2), a drumhead (3) disposed at the upper end of the drum disc (2), and a data acquisition module disposed within the drum disc (2) and located below the center of the drumhead (3), characterized in that, The data acquisition module includes a conductive medium (5) and a trigger (4) disposed below the conductive medium (5). The conductive medium (5) is connected in a series of layers from top to bottom, including a buffer component (501), a magnetic component (502), and a support component (503). The support component (503) includes a vibrating plate (5031) that is fixedly connected to the drum (2) and has elasticity. The trigger (4) includes a Hall sensor (401) disposed below the vibrating plate (5031) and matched non-contactly with the magnetic component (502). The magnetic component (502) includes a magnet (5021), a first double-sided sticker (5022) for fixing the magnet (5021) to the support (503), and a buffer ring (5023). The buffer ring (5023) has a through groove (5024) in the middle for placing the magnet (5021). The buffer component (501) includes at least three buffer pads (5011) that are stacked and connected to each other, and a second double-sided sticker (5012) disposed between the buffer pads (5011) and the drumhead (3). The second double-sided sticker (5012) is used to connect the buffer pads (5011) and the drumhead (3).

2. The non-contact mesh drum disc according to claim 1, characterized in that, The support member (503) also includes several fixing screws. The vibrating plate (5031) includes a base (5032) and several fixing feet (5033) that are circumferentially distributed on the outer edge of the base (5032) and extend outward. Each fixing foot (5033) has a through hole (5034) on one side for the screw of the fixing screw to pass through.

3. The non-contact mesh drum disc according to claim 2, characterized in that, The vibrating pad (5031) is made of PC material.

4. The non-contact mesh drum disc according to claim 1, characterized in that, The trigger (4) also includes a PCB board (402), and the Hall sensor (401) is disposed on the lower surface of the PCB board (402).

5. The non-contact mesh drum disc according to claim 1, characterized in that, The non-contact mesh drum also includes a data processing module electrically connected to the data acquisition module. The data processing module includes a drum input circuit, an input terminal separation circuit, a signal processing circuit, a digital-to-analog conversion circuit, a control circuit, a DSP data processing circuit, a sound source storage circuit, an analog-to-digital conversion circuit, and a post-amplification circuit. The output terminal of the drum input circuit is connected to the input terminal separation circuit. The output terminal of the input terminal separation circuit is connected to the input terminal of the signal processing circuit. The output terminal of the signal processing circuit is connected to the input terminal of the control circuit. The output terminal of the control circuit is connected to the input terminal of the DSP data processing circuit. The output terminal of the DSP data processing circuit is connected to the input terminal of the audio source storage circuit. The output terminal of the audio source storage circuit is connected to the input terminal of the analog-to-digital converter circuit. The output terminal of the analog-to-digital converter circuit is connected to the input terminal of the post-amplification circuit. The output terminal of the post-amplification circuit outputs an audio signal.

6. The non-contact mesh drum disc according to claim 5, characterized in that, The drum input circuit includes a Hall sensor IC1, a capacitor C1, and a terminal CN1. The terminal CN1 includes a connector PIN1 and a connector PIN2. The Hall sensor IC1 includes a sensor VCC terminal, a sensor OUT terminal, and a sensor GND terminal. The terminal PIN1 is connected to one end of capacitor C1 and the sensor VCC terminal, and the other end of capacitor C1 is connected to the sensor OUT terminal. The terminal PIN2 is grounded and connected to the sensor GND terminal. The input terminal separation circuit includes terminal CN2, power supply lead A, voltage VCC, resistor R1, GND lead C, and sampling output line B. Terminal CN2 includes terminal PIN3 and terminal PIN4. Voltage VCC and power supply lead A are connected to one end of resistor R1. The other end of resistor R1 and the sampling output line are connected to terminal PIN3. GND lead C is grounded and connected to terminal PIN4. Terminal PIN1 is connected to terminal PIN3, and terminal PIN2 is connected to terminal PIN4.

7. The non-contact mesh drum disc according to claim 6, characterized in that, The signal processing circuit includes an input terminal IN, an output terminal OUT, capacitors C2, C3, and C4, resistors R2, R3, R4, R5, R6, and R7, a comparator U1A, diodes D1, D2, and D3. The comparator includes comparator 1, comparator 2, and comparator 3. The input terminal IN is connected to one end of capacitor C2. The other end of capacitor C2, one end of resistor R3, and one end of resistor R7 are connected. The other end of resistor R7 is grounded and connected to comparator 3. Comparator 1 is connected to one end of resistor R5, the negative terminal of diode D2, and the negative terminal of diode D3. The positive terminal of D3 is connected to one end of resistor R6. The other end of resistor R6 is connected to one end of resistor R8, one end of capacitor C4, and one end of capacitor C3. The other end of capacitor C3 is connected to the output terminal OUT. The other end of R8 is grounded and connected to the other end of capacitor C4. The other end of resistor R3 is connected to one end of resistor R2, one end of resistor R4, and comparator 2. The other end of resistor R2 is connected to the other end of resistor R4, the other end of resistor R5, the positive terminal of diode D1, and the positive terminal of diode D2.

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