Gunfire-Responsive Light Switch System

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Solution Overview

Problem

Existing safety systems in public places, particularly in buildings without windows like schools, lack effective means to rapidly detect gunfire and respond by limiting visibility and notifying emergency responders, thereby increasing risk during shooting events.

Innovation Solution

A light switch system configured with sensors to detect gunfire through light and sound, a controller to differentiate and respond by switching off lights, and a communication system to notify emergency responders, including the ability to identify gunfire location and type, and activate cameras for video transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional light switch systems are used in public places, then lighting control is simple and reliable, but the system cannot detect gunfire or respond to threats

Engineering Contradiction:
Improvesafety response capabilityVSAvoidsystem structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The light switch system is transformed into a multi-functional device that combines traditional lighting control with gunfire detection and emergency response capabilities. The controller integrates multiple functions: receiving actuator signals for light control, processing sensor signals from microphones and infrared sensors to detect gunfire, and automatically triggering emergency responses including turning off lights and notifying authorities. This universal approach allows a single system to perform both routine lighting management and critical safety functions.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges previously separate systems (light switches, gunfire detection sensors, emergency notification systems) into a single integrated base unit. The actuator circuit, sensor circuits, and controller are combined in one device, allowing seamless coordination between light control and threat detection/response functions. This consolidation improves reliability by ensuring all components work together as a unified system while managing complexity through integrated design.

Inventive Principle:
Principle #5Merging (Combining)

2Object-affected harmful factors

If lights remain on during a shooting event, then visibility is maintained for occupants, but the shooter can see and continue targeting victims

Engineering Contradiction:
Improveshooter visibilityVSAvoidresponse time
Core Design Contradiction:
Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The system implements preliminary anti-action by pre-programming the controller to automatically execute a counter-measure (turning off lights) immediately upon detecting gunfire. The controller is configured with predetermined response protocols that trigger without human intervention, instantly eliminating the harmful effect of lighting that provides visibility to the shooter. This automatic response occurs within seconds of threat detection, minimizing the time occupants are exposed to danger.

Inventive Principle:
Principle #9Preliminary anti-action

3Reliability

If the system continuously monitors for gunfire, then threat detection is immediate, but energy consumption increases

Engineering Contradiction:
Improvethreat detection capabilityVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The sensor circuits operate using periodic action by continuously monitoring for gunfire threats through acoustic and infrared sensors. The system maintains constant vigilance for threat detection while managing energy consumption through efficient sensor operation and intelligent signal processing that activates full system response only when gunfire is actually detected rather than maintaining high-power states continuously.

Inventive Principle:
Principle #19Periodic action

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 system effectively minimizes risk by disabling lighting to obscure the shooter's view and promptly notifies emergency responders, enhancing safety in public places by quickly identifying and responding to gunfire incidents.

Implementation Method 1

The one or more sensors may be an infrared sensor that is configured to sense gunfire infrared light and other infrared light

Methodology Applied
Scientific EffectInfrared radiation detection: Infrared Radiation

Implementation Method 2

or a microphone that is configured to sense sound

Methodology Applied
Scientific EffectAcoustic wave detection: Sound

Data Source

PatentUS12198515B2Light switch systems configured to respond to gunfire and methods of use
Publication Date: 2025.01.14 WRIGHT MARTIN
  • US12198515B2 patent drawing
  • US12198515B2 patent drawing
  • US12198515B2 patent drawing

AI summary

The disclosed technology includes gunfire response systems and methods to detect gunfire, turn off lights when gunfire is detected, disable the lights from being switched on, and notify emergency responders. Such systems can help minimize ensuing risk following a shooting event by limiting the vision of a person who produced the gunfire. In some embodiments, the light switch system comprises one or more sensors. In some specific embodiments, the sensors include a microphone, infrared sensor, and optionally a camera. In some specific embodiments, the system is configured to detect gunfire sound, detect a type of gun that produced gunfire, and count of a number of shots of the gunfire.