Wearable Free Space Optical Transceiver for Secure Comms
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Solution Overview
Problem
Existing communication methods, particularly in sensitive or hazardous environments, face challenges due to the use of RF signals which can be detected, interfere with other systems, and pose hazards such as electromagnetic radiation ordinance (HERO), limiting their effectiveness in areas like search and rescue or law enforcement operations where secure and interference-free communication is crucial.
Innovation Solution
The development of a free space optical communication system using laser interrogators and multi-function optical transceivers that enable secure, interference-free communication through optical signals, including audio and text messaging, which can be triggered by laser interrogation and utilize different wavelengths to avoid interference, and include features like distress codes and automated responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RF communication systems are used for secure communication, then communication capability is improved, but detection risk increases and interference with other systems occurs
Solution Approach 1:
The patent substitutes RF electromagnetic communication systems with free space optical communication systems. The optical transceiver uses laser beams to transmit data through free space, replacing the traditional RF radio frequency system. This substitution eliminates detection by RF scanners and avoids interference with other RF systems while maintaining communication capability through optical signal transmission.
Solution Approach 2:
The patent changes the fundamental parameter of the communication signal from RF frequency to optical frequency. By operating in the optical spectrum rather than the radio frequency spectrum, the system achieves undetectability by conventional RF detection methods and eliminates interference with RF systems, while preserving bidirectional communication functionality through optical interrogation and response mechanisms.
2Reliability
If optical transceivers operate continuously to ensure detection, then detection reliability is improved, but battery power consumption increases
Solution Approach 1:
The patent implements periodic action by having the optical transceiver operate in a sleep mode most of the time and only activate when interrogated by an optical signal. The transceiver continuously monitors for incoming optical interrogation signals and transitions to active state only when needed to respond, thereby maintaining detection reliability while dramatically reducing battery power consumption compared to continuous operation.
Solution Approach 2:
The optical transceiver employs self-service mechanisms by automatically detecting incoming optical interrogation signals and autonomously transitioning to active state for response transmission. The system uses environmental optical signals to trigger its own activation, eliminating the need for continuous power consumption while ensuring reliable detection and response capability when needed.
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 solution provides a secure and interference-free communication method that conserves battery power, reduces detection risks, and ensures communication in environments where RF signals are undesirable, enhancing tactical capabilities and safety for first responders and law enforcement teams.
Implementation Method 1
an optical transceiver configured to receive an optical interrogation signal
Implementation Method 2
free space optical systems including wearable systems
Data Source
AI summary
Methods and systems are provided for identifying entities and communicating using lightweight and wearable free space optical systems. A variety of optical and electronic elements are used to enable communications and identification in an environment where identification and communication must be accomplished to address a variety of constraints. Such constraints can include frequency congested environments or environments in which communication should be done using non radio frequency (RF) systems. Embodiments include converting data into optical signals that are transmitted using a laser which are received by optical receivers and converted into audio output.