LiFi Guard Device Silent Alerting
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Solution Overview
Problem
Security guards face challenges in quietly and unobtrusively communicating information or soliciting assistance while making rounds, especially in situations where alerting intruders is undesirable, and there is a need for automatic check-ins at predetermined locations.
Innovation Solution
A portable security device equipped with a LiFi source and controller, allowing security guards to select alert options via a user interface and transmit corresponding LiFi messages, which can include text, images, or video, and automatically check-in at predetermined locations using LiFi receivers installed in the space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a security guard uses a phone or walkie-talkie to call for assistance, then assistance can be solicited, but the intruders may be alerted
Solution Approach 1:
The patent replaces traditional acoustic communication systems (walkie-talkies, phones) with an optical communication system using LiFi technology. The security device transmits messages through modulated light signals that are received by LiFi receivers at predetermined locations, enabling silent communication that does not alert intruders while maintaining reliable assistance solicitation
Solution Approach 2:
The patent introduces LiFi receivers installed at predetermined locations as intermediaries between the security guard and the central monitoring system. These receivers act as silent relays that receive optical signals from the security device and forward them through existing communication infrastructure, enabling discreet communication without direct acoustic transmission
2Reliability
If automatic check-in at predetermined locations is implemented, then security monitoring is improved, but device complexity increases
Solution Approach 1:
The patent makes the LiFi receivers serve multiple functions: they act as both communication relays for silent messaging and automatic check-in points for security monitoring. The same infrastructure of predetermined locations with receivers handles both assistance solicitation and automated presence verification, reducing overall system complexity despite the added functionality
Solution Approach 2:
The system performs automatic check-in without requiring active participation from the security guard. The device automatically detects when the guard is near predetermined locations and transmits check-in signals through the LiFi receivers, enabling autonomous security monitoring that reduces manual intervention while maintaining reliable presence tracking
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, reliable, and discreet communication and assistance requests, providing real-time information transmission and automatic location check-ins, reducing the risk of electronic jamming and enhancing security system efficiency.
Implementation Method 1
a LiFi (Light Fidelity) source and a controller that is operatively coupled to the user interface and to the LiFi source
Data Source
AI summary
A portable security device may enable a security guard to quietly and unobtrusively solicit assistance, or transmit information, when desired. A portable security device may include a user interface, a LiFi source and a controller that is operatively coupled to the user interface and to the LiFi source. In some cases, the controller may be configured to present two or more alert options to the security guard via the user interface and to receive a selection of one of the alert options by the security guard. In response to the selection of an alert option by the security guard, the controller may be configured to transmit a LiFi message that corresponds to the selected alert option via the LiFi source.


