Motion Alert Zoning for A/V Recording Without Alert Fatigue
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Solution Overview
Problem
Users of A/V recording and communication devices experience alert fatigue due to excessive motion detection alerts, leading to the disabling of motion detection functions, which compromises the device's effectiveness in identifying and apprehending criminal activity.
Innovation Solution
Implementing dual thresholds and differing criteria for motion detection and alert zones, allowing the device to record audio and video footage without generating unnecessary alerts by separating motion detection and alert zones, and using object size and motion magnitude thresholds to trigger alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If motion detection sensitivity is increased to improve crime detection capability, then more criminal activities are detected, but excessive alerts cause user fatigue and device disabling
Solution Approach 1:
The patent applies local quality by creating different detection zones with different sensitivity levels. A first detection zone near the doorbell has high sensitivity for capturing criminal activities, while a second detection zone at a distance has lower sensitivity to avoid triggering excessive alerts from distant objects like cars. This spatial differentiation of detection quality resolves the contradiction between comprehensive crime detection and user alert tolerance.
Solution Approach 2:
The detection area is segmented into multiple zones with distinct alert thresholds. The system divides the monitoring space into a first detection zone for critical areas requiring immediate alerts and a second detection zone for peripheral areas where recording without alerts is sufficient. This segmentation allows the system to maintain high reliability for crime detection while managing user alert fatigue through selective alerting.
2Area of stationary object
If motion detection coverage area is expanded to monitor more surroundings, then broader security coverage is achieved, but more false alerts are generated
Solution Approach 1:
Different zones are assigned different detection qualities and alert policies. The first detection zone near the doorbell uses high sensitivity with alert generation, while the second detection zone at a distance uses lower sensitivity with recording-only policy. This local quality differentiation allows expanded coverage without proportionally increasing false alerts.
Solution Approach 2:
The monitoring area is segmented into zones with hierarchical alert policies. Critical zones trigger alerts while peripheral zones are recorded without alerts. This segmentation strategy enables broad coverage while filtering out false alerts from less critical areas, resolving the contradiction between coverage area and false alert frequency.
3Ease of operation
If alert threshold is lowered to reduce false alerts, then fewer unnecessary notifications are sent, but significant criminal activities may be missed
Solution Approach 1:
Alert thresholds are differentiated by location quality. The first detection zone near the doorbell maintains a low threshold for high sensitivity to criminal activities, while the second detection zone uses a higher threshold to reduce false alerts from distant objects. This local quality approach preserves crime detection sensitivity while improving overall alert notification quality.
Solution Approach 2:
The alert system is segmented into zones with different threshold policies. Critical zones maintain sensitive thresholds for reliable crime detection, while peripheral zones use less sensitive thresholds to reduce false alerts. This segmentation resolves the contradiction between notification quality and detection sensitivity by applying appropriate thresholds locally.
Data Source
AI summary
Some embodiments provide a method for separating the motion detection zone(s) of an A/V recording and communication device from the motion alert zone(s) of the A/V recording and communication device. For example, an A/V recording and communication device may be configured to generate motion alerts, and to record audio and video footage, when an event is detected within a selected motion alert zone (e.g., within a defined radius around the A/V recording and communication device). However, the A/V recording and communication device may not generate a motion alert for an event detected outside of the selected motion alert zone, even though the device may still record audio and video footage for the detected event (e.g., when the event is within a selected motion detection zone).