Mesh-Head Electronic Drum Non-Contact Trigger
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Solution Overview
Problem
In existing mesh-head electronic drums, the direct contact between the piezoelectric ceramic buzzer and the elastic buffer component leads to bad contact issues, resulting in poor or no audio signal generation due to mechanical signal damping and deformation over time.
Innovation Solution
A mesh-head electronic drum design featuring a magnetic unit as the conduction medium, coupled with a Hall sensor in a non-contact manner, where the magnetic unit is arranged between laminated mesh layers, and the Hall sensor is connected to the data processing module to generate an audio signal without direct contact between the trigger unit and conduction medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the piezoelectric ceramic buzzer is in direct contact with the elastic buffer component to transmit mechanical signals, then the audio signal can be generated, but long-time pressing causes deformation of the elastic buffer component leading to bad contact and poor signal transmission
Solution Approach 1:
The patent replaces the mechanical contact-based piezoelectric trigger unit with a magnetic field-based trigger unit comprising a magnet and a Hall sensor. The magnet is attached to the drum pad while the Hall sensor is mounted on the drum base, enabling non-contact detection of drum strikes through magnetic field changes. This eliminates mechanical wear and contact degradation, resolving the contradiction between contact reliability and service life.
2Object-affected harmful factors
If the elastic buffer component is used to damp mechanical signals, then the drum head can be protected, but the elastic material deforms over time causing loss of contact with the mesh layer
Solution Approach 1:
The patent replaces the elastic buffer component with a foam pad that serves as a pure cushioning element without signal transmission function. The magnetic unit is positioned behind the foam pad, allowing the foam to absorb mechanical impacts and protect the drum head while the magnetic field detection occurs independently through the non-contact Hall sensor system. This separation of cushioning and detection functions maintains both noise protection and structural stability.
3Measurement precision
If a contact-type trigger unit is used to detect drum strikes, then the mechanical signal can be transmitted accurately, but direct contact causes wear and contact degradation over time
Solution Approach 1:
The patent substitutes the mechanical contact-based piezoelectric sensor with a magnetic field-based detection system. The Hall sensor detects changes in the magnetic field generated by the magnet when the drum pad is struck, converting mechanical motion into electrical signals without physical contact. This non-contact measurement approach maintains signal accuracy while eliminating wear and contact degradation, thereby improving both measurement precision and contact durability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design prevents bad contact issues, allowing for accurate audio signal generation while minimizing mechanical noise and maintaining the drum's structural integrity, even with long-time striking or improper tensioning, by using a magnetic unit and Hall sensor to convert mechanical vibrations into electrical signals without direct contact.
Implementation Method 1
the trigger unit comprises a Hall sensor coupled with the magnetic unit in a non-contact way
Data Source
AI summary
The disclosure relates to a mesh-head electronic drum, including a drum base, a drum head, a data acquisition module and a data processing module, wherein the data acquisition module includes a trigger unit and a conduction medium, the conduction medium is a magnetic unit, the magnetic unit is arranged on the drum head, and the trigger unit includes a Hall sensor coupled with the magnetic unit in a non-contact way. The disclosure is advantageous in that the trigger unit and the conduction medium have no direct contact with each other and thus no bad contact is caused, but an accurate audio signal can still be generated.