Electronic Helmet Active Noise Control via Mobile Device
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Solution Overview
Problem
Current noise cancellation solutions, such as passive noise control and high-cost active noise control helmets, fail to effectively eliminate low-frequency noise and are not convenient for portable use, especially in environments like the aircraft industry, and lack integration with music preservation and hands-free communication.
Innovation Solution
An electronic helmet that utilizes a mobile device to execute active noise control, integrating dual-channel audio and adaptive acoustic echo cancellation programs, allowing for noise cancellation, music preservation, and hands-free communication, with a system comprising microphones, speakers, and a control unit to generate anti-noise signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If passive noise control using sound-absorbing cotton is used, then noise reduction is achieved, but low-frequency noise cannot be eliminated and the system is not portable
Solution Approach 1:
The patent replaces the mechanical passive noise control system (sound-absorbing cotton) with an active electronic noise control system that uses microphones, processors, and speakers to generate anti-noise signals. This substitution enables effective low-frequency noise cancellation while maintaining portability, as the electronic system requires no bulky acoustic materials.
2Object-affected harmful factors
If active noise control is implemented in helmets, then noise cancellation is achieved, but product cost increases significantly
Solution Approach 1:
The patent integrates multiple functions into a single helmet system: active noise control, music playback, and hands-free communication. By combining these functions into one unified device with shared components (microphones, speakers, processor), the per-function cost is reduced compared to separate systems, making the noise cancellation feature more cost-effective.
Solution Approach 2:
The patent merges the noise control system with music and communication functions into a single integrated helmet. The microphones, speakers, and digital processor serve multiple purposes: detecting ambient noise for cancellation, playing music, and enabling hands-free communication. This consolidation reduces overall system cost and complexity.
3Object-affected harmful factors
If active noise control is implemented in helmets, then noise cancellation is achieved, but product weight increases
Solution Approach 1:
The patent uses thin film speakers and compact microphone elements that can be integrated into the helmet structure without adding significant weight. The electronic components are miniaturized and arranged to minimize mass, allowing effective active noise control in a lightweight portable device.
4Object-affected harmful factors
If traditional active noise control systems are used, then noise cancellation is achieved, but device complexity increases
Solution Approach 1:
The patent employs a universal digital processor that handles multiple tasks: active noise control signal processing, music playback control, and communication signal handling. This single multi-functional processor replaces what would otherwise require separate dedicated processing units for each function, significantly reducing device complexity.
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 solution provides effective noise cancellation, reduces product cost and weight, enhances riding quality, and ensures safety through integrated noise cancellation, music preservation, and hands-free communication, while also providing voice navigation.
Implementation Method 1
a plurality of microphones in the electronic helmet are respectively electrically coupled to the first communication unit and configured to at least detect an sound or a noise
Implementation Method 2
the speakers are respectively electrically coupled to the first communication unit and configured to at least output the sound or an anti-noise
Implementation Method 3
The anti-noise, whose phase is opposite to noise but amplitude is same as the ones of noise, is generated by a speaker according to a result of environment noise detection by a microphone. The environment noise cancellation can be achieved with the anti-noise to destroy strength of noise by forming destructive interference.
Data Source
AI summary
The present invention provides an electronic helmet for cancelling noises, which comprises a helmet including a plurality of microphones, a plurality of speakers and a first communication unit; and a mobile device including a second communication unit and a control unit. When the first communication unit in the helmet connects to the second communication unit in the mobile device, the control unit generates a plurality of control signals according to at least one sound or noise detected by the plurality of microphones. The mobile device uses the plurality of control signals to control the plurality of speakers outputting the at least one sound or anti-noise cancelling the noise. By the above electronic helmet, the present invention also provides a method integrating active noise control, hands-free communication, music listening, and voice navigation so as to achieve the proposes of cancelling the noises and improving the riding quality.