Barrier Alarm Delay Logic for Occupant-Triggered Openings
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Solution Overview
Problem
Security systems frequently experience false alarms due to occupants forgetting that the system is armed, leading to unnecessary responses from authorities and potential fines, as well as startling loud sirens when doors or windows are opened while the system is in an armed mode.
Innovation Solution
A barrier alarm device that includes a processor, human detection device, and transmitter to determine if a human is inside the premises when a door or window is opened, allowing for a timed alarm signal to be sent instead of an immediate alert, and a central security panel that monitors elapsed time before initiating a security response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If an immediate alarm signal is transmitted when a barrier is opened, then security response time is improved, but false alarms increase and occupants are startled
Solution Approach 1:
The system performs preliminary detection of human presence inside the premises before transmitting the alarm signal. The human detection device checks whether an occupant is present, and only if no human is detected does the system transmit the alarm signal immediately. This preliminary action prevents false alarms caused by occupants opening doors or windows while inside the premises.
Data Source
AI summary
A barrier alarm device for reducing the number of false alarms that may occur in a home or business security system. In one embodiment, a barrier alarm device, such as a door or window sensor, determines whether a barrier, such as a door or a window, has been opened, and determines whether a human being is inside a premises in proximity to the door or window. If a human being is inside the monitored premises when the door or window is opened, it indicates that the human being is authorized to be inside the monitored premises, and the barrier alarm device transmits a timed alarm signal to a central security panel, causing a security response to be generated by the central security panel if a predetermined time period elapses without a user canceling the security response.