Free Space Optical Headset for Noise-Isolated Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hearing protection devices in noisy environments hinder communication between users, as they require switching to private radio channels or removing protection to convey messages effectively, which can expose individuals to hazardous noise levels and electromagnetic interference.
Innovation Solution
A communications headset system using free-space optics for wireless communication, allowing users to transmit and receive audio signals as light signals, enabling duplex communication while maintaining hearing protection, and avoiding radio-frequency interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If hearing protection devices are used to reduce ambient noise, then hearing protection is improved, but communication between users deteriorates
Solution Approach 1:
The patent replaces acoustic communication with optical communication. Instead of using sound waves to transmit messages, the system uses light signals transmitted through the air between users' headsets. The transmitting headset converts audio signals to light signals via an optical transmitter, and the receiving headset converts light signals back to audio signals via an optical receiver and speaker, enabling communication while maintaining hearing protection.
2Length of moving object
If radio-frequency communication is used for long-distance transmission, then communication range is improved, but electromagnetic interference and security issues worsen
Solution Approach 1:
The patent substitutes radio-frequency electromagnetic waves with optical light signals for communication. The optical transmitter converts audio signals to modulated light signals that travel through the air, and the optical receiver detects these light signals and converts them back to audio. This optical communication approach eliminates electromagnetic interference with sensitive equipment while maintaining communication range and security through directional light transmission.
3Ease of operation
If hearing protection is removed to improve communication, then communication clarity is improved, but exposure to hazardous noise worsens
Solution Approach 1:
The patent enables audio transmission through optical signals rather than acoustic waves. The transmitting headset's optical transmitter converts the user's speech into modulated light signals that travel through the air. The receiving headset's optical receiver detects these light signals and the integrated speaker converts them to audible sound, allowing clear communication while the hearing protection remains in place to block hazardous noise.
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
Enables secure, effective communication between users in high-noise environments without removing hearing protection, reducing exposure to noise and electromagnetic interference, and allowing for selective communication modes to ensure privacy and security.
Implementation Method 1
An optical transmitter in electrical communication with the microphone receives and converts the outgoing electrical signal to one or more light signals and then broadcasts the one or more light signals within a broadcast field-of-view and a broadcast range
Implementation Method 2
A first optical receiver that detects a light signal within a first receiving field-of-view and generates an incoming electrical signal that corresponds to the light signal
Implementation Method 3
A speaker is in electrical communication with the first optical receiver and converts the incoming electrical signal to an incoming audio signal. The speaker then outputs the incoming audio signal as sound waves
Implementation Method 4
A microphone receives and converts outgoing sound waves to an outgoing electrical signal
Implementation Method 5
hearing protection cups mounted to the headset and configured to engage a user's ears and to attenuate incoming sound waves that are external to the headset
Data Source
AI summary
A communications headset system and method of use utilizing first and second headsets with integrated hearing protection for enabling users to wirelessly communicate when the hearing protection is engaged. Each headset is configured for placement onto a user's head and includes hearing protection cups that engage a user's ears and attenuate incoming sound waves external to the headset. The headsets include a first optical receiver that detects a light signal within a first receiving field-of-view and generates an incoming electrical signal corresponding to the light signal. A speaker converts the incoming electrical signal to an incoming audio signal, and then outputs the incoming audio signal as sound waves. A microphone converts outgoing sound waves to an outgoing electrical signal. An optical transmitter converts the outgoing electrical signal to one or more light signals and then broadcasts the one or more light signals within a broadcast field-of-view and a broadcast range.