Radar-Camera Presence Detection for Immobile Person Identification
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Solution Overview
Problem
Current security systems, including video analytics, fail to detect immobile persons such as those sleeping, as they do not move sufficiently to register on camera systems, posing challenges in areas like ATM vestibules where their presence may deter customers and complicate privacy-protected environments like changing rooms or showers.
Innovation Solution
A computer-implemented method and system that uses a combination of radar and camera systems to detect the presence of persons, initiating a timer upon detection, adjusting it based on portal status changes, and issuing alerts for abnormal usage, such as prolonged presence in a location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If video analytics systems are used to detect persons, then moving persons can be detected, but immobile persons such as sleeping persons cannot be detected as they do not move sufficiently
Solution Approach 1:
The patent combines video analytics with radar technology into an integrated detection system. The radar component detects immobile persons through micro-movements and physiological signals, while video analytics handles moving persons, creating a complementary system that overcomes the limitations of either technology alone.
Solution Approach 2:
The system employs multiple detection modalities (video and radar) within a single security system framework, enabling it to handle both moving and immobile persons universally. This multi-functional approach allows the system to adapt to various detection scenarios without requiring separate systems.
2Reliability
If security systems monitor areas like ATM vestibules continuously, then sleeping persons can be detected, but customer experience may be negatively affected and privacy concerns arise
Solution Approach 1:
The system dynamically adjusts its detection and response behavior based on portal status and time parameters. When portals are closed and abnormal duration is detected, alerts are triggered. When portals are open or normal usage patterns are detected, the system remains inactive, creating a dynamic balance between detection reliability and customer experience.
Solution Approach 2:
The system incorporates feedback mechanisms through portal status detection and timer adjustments. When a portal is opened or closed, the system receives feedback and adjusts its monitoring behavior accordingly, allowing it to distinguish between normal customer interactions and abnormal sleeping situations.
3Measurement precision
If timers are set to detect abnormal usage durations, then sleeping persons can be identified, but false alerts may occur during normal prolonged usage
Solution Approach 1:
The system uses portal status feedback to adjust timer behavior and distinguish between normal and abnormal usage. When portals remain closed for extended periods, the system interprets this as abnormal usage and triggers alerts. When portals are frequently opened or normal patterns are detected, the timer is reset or adjusted, preventing false alerts.
Solution Approach 2:
The system performs preliminary detection and analysis before triggering alerts. It monitors portal status changes and accumulates time data before making a determination about abnormal usage, ensuring that alerts are only generated when genuine abnormal conditions are confirmed rather than during normal prolonged usage.
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
Effectively detects and alerts for abnormal usage in areas like ATM vestibules and privacy-protected spaces, preventing deterrence of customers and ensuring privacy by accurately identifying immobile persons and adjusting alerts based on portal status changes.
Implementation Method 1
Detecting the presence of the person may comprise using radar to detect the presence of the person
Data Source
AI summary
A computer-implemented method comprises detecting, with a presence detector such as a radar device, a presence of a person at a location such as an ATM vestibule. In response thereto, a timer is initiated. After initiating the timer, a portal sensor is used to detect a change in a status of a portal permitting access to the location. In response thereto, the timer is adjusted (for example the timer is reset). Thus, multiple consecutive normal usages of the vestibule do not unnecessarily trigger an alarm.