Digital Sensor Alert Device for Room Reentry Detection
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Solution Overview
Problem
Conventional methods for clearing rooms, such as using chemical light sticks and leaving personnel behind, are inadequate for ensuring a room remains secure against reentry by hostile individuals, as they lack a reliable and efficient means to detect reentry and alert other team members.
Innovation Solution
A digital sensor alert device comprising a top and bottom member, a button, sensor, radio, microprocessor board, and battery, which uses a low-power passive infrared motion sensor to detect room entry and transmit alerts via radio frequency, allowing for a safer and more efficient clearance process without leaving personnel behind.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional chemical light sticks and personnel are left behind to mark a cleared room, then the room status can be indicated, but the method lacks reliability in detecting reentry and requires additional personnel deployment
Solution Approach 1:
The sensor device autonomously monitors the room for reentry without requiring personnel to guard it. The passive infrared sensor automatically detects thermal signatures of intruders and triggers alerts, making the system self-sufficient for security monitoring tasks
Solution Approach 2:
The patent replaces the mechanical approach of leaving personnel behind with an electronic sensor-based system. The passive infrared sensor detects thermal radiation from intruders, converting physical detection into electrical signals for automated monitoring and alerting
2Reliability
If personnel are left behind to guard cleared rooms, then reentry can be detected, but energy consumption and operational efficiency decrease
Solution Approach 1:
The sensor device autonomously performs detection and alerting functions without human intervention. The system activates on its own when motion is detected and automatically communicates alerts, eliminating the need for personnel to expend energy on continuous monitoring
Solution Approach 2:
The passive infrared sensor operates in a periodic scanning manner, detecting thermal signatures only when motion occurs rather than requiring continuous active monitoring. This reduces energy consumption while maintaining effective detection capability
3Device complexity
If conventional light sticks are used to indicate room status, then the method is simple, but it lacks real-time monitoring and alert capabilities
Solution Approach 1:
The system incorporates real-time feedback through the passive infrared sensor that continuously monitors for intruders and immediately communicates status changes via radio frequency alerts. This provides up-to-date information about room security status to remote personnel
Solution Approach 2:
The device combines multiple functions including status indication through LEDs, real-time motion detection, radio frequency alerting, and wireless communication capabilities. This multi-functional approach replaces multiple separate systems with a single integrated device
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 device effectively indicates room status using light emitting diodes and alerts military or law enforcement teams, enhancing security by reducing the need for personnel to guard cleared rooms and enabling a cost-effective, deployable, and versatile solution for real-time monitoring.
Implementation Method 1
The device 100 allows military and law enforcement personnel to indicate both that a room has been cleared and indicate when a hostile person reenters that cleared room. The present invention senses at a sensor 107 when persons enter the room
Implementation Method 2
The microprocessor board further comprises a light emitting diode. The present invention indicates via a light emitting diode 114 the status of the room
Implementation Method 3
The device includes a radio adjacent to the top member. The present invention alerts the military or law enforcement team using a radio 112 when the sensor 107 detects a person
Data Source
AI summary
A device for signaling including a top member adjacent to a bottom member, a button adjacent to the top member, a sensor adjacent to the top member, a radio adjacent to the top member, a microprocessor board adjacent to the radio, a battery adjacent to the microprocessor board, and a switch adjacent to the bottom member. A button slot and sensor hole formed through the top member. The button is received in the button slot and the sensor in the sensor slot. The microprocessor board further comprises a light emitting diode. The bottom member has a bottom recess and a switch slot. The switch is received in the switch slot. The top member has a sensor recess and a screw hole. The sensor is retained in the sensor recess. The bottom member has a screw recess. The radio, microprocessor board, and battery are slidably received in the bottom slot.