Security System Notify Mode for Occupant Detection
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Solution Overview
Problem
Conventional security systems often remain unarmed when occupants forget to arm them upon leaving, leading to potential security vulnerabilities and unnecessary alarms, especially in environments with frequent occupant turnover.
Innovation Solution
A security system that detects the last person leaving a monitored environment and sends a notification to arm the system, transitioning to a 'notify mode' if no response is received within a finite time, which suppresses alarm signals and instead transmits notifications to authorized individuals upon detecting trigger events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the security system remains unarmed when occupants forget to arm it, then the system is easy to operate and avoids false alarms, but security vulnerability increases
Solution Approach 1:
The system performs preliminary detection of occupant presence and automatically sends arming notifications before the security vulnerability occurs. The processor detects when the last occupant leaves and proactively notifies user devices to arm the system, preventing the security gap that would otherwise exist due to human forgetfulness.
Solution Approach 2:
The system implements a feedback loop where the processor monitors sensor data, determines occupancy status, sends notifications to user devices, and waits for arming commands. This closed-loop feedback mechanism ensures the system transitions to armed state based on actual occupancy conditions, improving security reliability without requiring complex manual operation.
2Reliability
If the security system is automatically armed when the last person leaves, then security reliability improves, but false alarms increase due to frequent occupant turnover
Solution Approach 1:
Instead of immediately arming the system when the last occupant leaves, the processor first sends a preliminary notification to user devices requesting an arming command. This preliminary action allows legitimate occupants to respond and arm the system properly, while preventing automatic arming that would trigger false alarms during frequent turnover situations.
Solution Approach 2:
The system dynamically adjusts its arming behavior based on the arming command received from user devices. Rather than a static automatic arming rule, the system transitions to armed state only after receiving confirmation, creating a dynamic response that adapts to actual occupancy intentions and reduces false alarms during frequent entry/exit scenarios.
3Power
If the alarm generates signals upon detecting trigger events in armed mode, then security response is strong, but device wear and unnecessary alerts increase
Solution Approach 1:
The alarm component has different operational qualities based on system mode. In notify mode, the alarm generates only notifications to user devices rather than full alarm signals. This local quality differentiation allows the system to maintain security monitoring while reducing device wear and energy consumption by avoiding unnecessary full alarm activations during frequent false trigger events.
Data Source
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AI summary
A security system is configured to be set in a notify mode if it fails to detect a response from the last person to leave the monitored environment or someone else who have left the house to arm the security system within a finite amount of time. When the security system is in the notify mode, the security system does not generate an alarm signal upon detecting a trigger event that would otherwise trigger an alarm if the system were in a fully armed mode, but instead, transmits a notification to legitimate residents or occupants who have left the monitored environment that the trigger event has occurred.