Barrier Alarm Device Using Human Detection to Reduce False Alarms
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Solution Overview
Problem
Home security systems frequently experience false alarms when occupants open doors or windows while the system is in an armed mode, leading to unnecessary responses from public resources and potential fines.
Innovation Solution
A barrier alarm device that includes a processor, memory, and human detection device to differentiate between authorized and unauthorized openings by determining if a human is in proximity to the barrier, thereby preventing false alarms by only generating an alarm signal when an unauthorized person attempts to enter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the security system is armed in home mode to protect against intruders, then security protection is improved, but false alarms occur when occupants open doors or windows
Solution Approach 1:
A human detection device serves as an intermediary between the barrier status detection and alarm generation. When a barrier is opened, the human detection device detects whether a human is present in proximity to determine if the opening is authorized, thereby mediating between security protection and false alarm prevention
Solution Approach 2:
The system changes the detection parameters by adding human presence detection to the existing barrier status detection. This additional parameter (human presence) allows the system to differentiate between authorized and unauthorized openings, resolving the contradiction between maintaining security and preventing false alarms
2Reliability
If the system generates an alarm signal when a barrier is opened, then intruder detection is improved, but public resources are wasted due to false alarms
Solution Approach 1:
The human detection device provides feedback about human presence to the alarm decision-making process. This feedback mechanism allows the system to adjust alarm generation based on whether a human is present, ensuring that alarms are only generated for unauthorized openings and preventing waste of public resources
3Reliability
If the system monitors all door and window openings, then security coverage is improved, but false alarms increase when occupants move about the home
Solution Approach 1:
The system adds another dimension of detection (human presence detection) to the existing barrier monitoring. This additional dimension allows the system to maintain comprehensive security coverage while differentiating between authorized and unauthorized openings without increasing false alarms
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
Reduces occurrences of false alarms by accurately distinguishing between authorized and unauthorized access, minimizing unnecessary alerts and resource wastage.
Implementation Method 1
When the door or window is closed, the magnet and reed switch are in close proximity to one another, maintaining the reed switch in a first state indicative of a 'no alarm' condition. If the door or window is opened, proximity is lost between the magnet and the reed switch
Implementation Method 2
a human detection device for determining whether a human being is inside a monitored premises in proximity to the barrier
Data Source
AI summary
A barrier alarm device for reducing the number of false alarms that may occur in a home 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, determines whether a human being is in proximity to the door or window inside a monitored premises. 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 an alarm signal is not transmitted to a central security panel, thus reducing false alarms.