Double-Moving Coil Pneumatic Sounder Eliminates Static Friction
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Solution Overview
Problem
Current pneumatic sounders fail to meet the higher sound pressure level requirements for high-frequency sound spectra, as they rely on a structure with a moving and static coil assembly that introduces frictional resistance and requires high machining accuracy.
Innovation Solution
A pneumatic sounder with a double-moving coil assembly and a control system that includes feedback coils, signal adjusters, phase adjusters, and a power amplifier, eliminating the static coil and reducing frictional resistance, allowing for enhanced modulation efficiency and increased sound pressure levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a moving and static coil assembly is used, then the sounder can generate high-intensity noise, but the frictional resistance between the moving and static coils reduces modulation efficiency and limits sound pressure level
Solution Approach 1:
The invention extracts and removes the static coil from the system, eliminating the source of frictional resistance. By using only two moving coils that reciprocate in opposite directions, the patent eliminates the harmful friction between moving and static components while maintaining the electromagnetic cutting action necessary for sound generation.
Solution Approach 2:
The invention segments the single moving coil into two separate moving coils (first moving coil and second moving coil) that operate in opposite directions. This segmentation allows each coil to move freely without friction against a static coil, while their combined reciprocating motion creates the necessary air flow modulation for high-intensity noise generation.
2Manufacturing precision
If a moving and static coil assembly is used, then the structure can meet early experimental standards, but the machining accuracy requirements increase and the structure becomes more complex
Solution Approach 1:
The invention extracts and removes the static coil from the system, eliminating the source of frictional resistance. By using only two moving coils that reciprocate in opposite directions, the patent eliminates the harmful friction between moving and static components while maintaining the electromagnetic cutting action necessary for sound generation.
Solution Approach 2:
The invention segments the single moving coil into two separate moving coils (first moving coil and second moving coil) that operate in opposite directions. This segmentation allows each coil to move freely without friction against a static coil, while their combined reciprocating motion creates the necessary air flow modulation for high-intensity noise generation.
3Power
If the moving coil reciprocates to change the gap, then the sounder can generate sound waves, but the frictional resistance reduces the sound pressure level in high-frequency spectrum
Solution Approach 1:
The invention extracts and removes the static coil from the system, eliminating the source of frictional resistance. By using only two moving coils that reciprocate in opposite directions, the patent eliminates the harmful friction between moving and static components while maintaining the electromagnetic cutting action necessary for sound generation.
Solution Approach 2:
The invention utilizes mechanical vibration by having the first and second moving coils reciprocate in opposite directions at high frequencies. This vibratory motion of the coils through the air flow creates the sound waves, and the absence of static coil friction allows the vibration to be more efficient and generate higher sound pressure levels.
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
The double-moving coil design doubles modulation efficiency, reduces energy consumption, and extends the lifespan of the moving coils while maintaining high sound pressure levels across the high-frequency spectrum.
Implementation Method 1
a feedback coil disposed on a double-moving coil assembly, configured to generate a feedback signal when the double-moving coil assembly operates
Implementation Method 2
The first moving coil and the second moving coil are connected to the electrical signal control system respectively, and the air flow inlet, the double-moving coil assembly, and the air flow outlet are sequentially disposed along a flow direction of an air flow
Data Source
AI summary
A pneumatic sounder and a control system thereof are disclosed. The pneumatic sounder comprises double magnets and a double-moving coil assembly. The double magnets comprise a first magnet and a second magnet, and the double-moving coil assembly comprises a first moving coil and a second moving coil. The first moving coil is disposed in a magnetic field of the first magnet, and the second moving coil is disposed in a magnetic field of the second magnet. The first moving coil and the second moving coil are connected to an electrical signal control system respectively, and a control system for the pneumatic sounder is also provided. The sounder greatly enhances adjustment efficiency of a cutting seam, reduces energy consumption for driving moving coils, guarantees services lives of the moving coils, and increases reliability of a system.