Wireless Signal Intrusion Detection With AI-Based Entry Verification
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Solution Overview
Problem
Current security systems for residential and small industrial areas rely on complex and expensive sensor-based infrastructures that require constant maintenance and raise privacy concerns, with vision-based systems being impractical due to high dimensional signals, illumination variations, and occlusions.
Innovation Solution
A wireless-enabled security system that uses metrics from wireless signals to detect and classify activities, employing digital filters and anomaly detection algorithms to identify authorized or unauthorized entries without the need for dedicated security devices, leveraging existing wireless devices for environmental monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vision-based sensing infrastructures are deployed for intrusion detection, then detection capability is improved, but device complexity and deployment cost increase significantly
Solution Approach 1:
The patent replaces vision-based mechanical/optical sensing systems with wireless signal-based detection systems. Instead of using cameras and visual sensors that require complex infrastructure, the invention uses wireless signals (WiFi, Bluetooth, etc.) that naturally propagate through the environment to detect intrusions, thereby substituting a complex mechanical sensing system with a simpler electromagnetic field-based system.
Solution Approach 2:
The patent makes existing wireless devices serve dual purposes: their primary communication function and secondary intrusion detection function. By extracting metrics from wireless signals already present in the environment, the system eliminates the need for dedicated security sensors, achieving multi-functionality with existing infrastructure.
2Reliability
If vision-based sensing infrastructures are deployed for continuous monitoring, then security coverage is improved, but privacy concerns worsen
Solution Approach 1:
The patent extracts only the necessary security information from wireless signals without capturing visual data. By analyzing metrics such as signal strength, phase, and timing from wireless communications, the system obtains intrusion detection capability while deliberately excluding personal identifiable information and visual privacy, thus separating security function from privacy intrusion.
3Measurement precision
If vision-based sensing infrastructures are deployed for intrusion detection, then detection accuracy is improved, but processing complexity and computational cost increase
Solution Approach 1:
The patent substitutes complex visual signal processing with simpler wireless signal metric extraction. Instead of processing high-dimensional video streams and images that require significant computational power, the system extracts scalar metrics from wireless signals such as received signal strength indicator (RSSI), phase information, and time of arrival, dramatically reducing processing complexity while maintaining detection accuracy.
4Measurement precision
If dedicated security sensing devices are deployed, then detection capability is improved, but deployment cost and maintenance expense increase
Solution Approach 1:
The patent enables existing wireless devices (smartphones, tablets, laptops, IoT devices) to perform intrusion detection in addition to their primary communication functions. By leveraging the ubiquity of wireless devices in modern environments, the system eliminates the need for dedicated security sensors, thereby dramatically reducing deployment cost and maintenance expense while maintaining detection capability.
Data Source
AI summary
An intelligent entrance detection system is provided where, primarily, any authorized or unauthorized entry to an area of a residential (or small industrial) unit covered by a wireless network is automatically detected from active off-the-shelf devices in that area. After the detection, an identification algorithm is employed to verify if this entry is a legal or illegal action. Based on this verification, either the routine smart home system is activated or a hazardous monitoring period begins to further investigate the suspicious event. If the illegal entrance is confirmed during the hazardous monitoring period, the owner of the property is informed through an intruder alarm protocol. In this invention, all of the analytic and processing steps, including entrance detection, owner identification, and device-free authority verification are designed based on monitoring and quantification of changes in surrounding wireless signals originated by human or object movements within the sensing area.