Monitoring System Alarm Logic for Presence Detection
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Solution Overview
Problem
Existing monitoring systems fail to accurately activate alarms when a monitored person is in a predetermined state, such as needing assistance, due to the presence of other individuals in the monitored area, leading to potential delays in receiving necessary help.
Innovation Solution
A monitoring system that includes an alarm device, a state detection unit, an alarm control unit, and a determination unit. The system detects the state of a monitored person and determines if a predetermined attribute person is present in the area. The alarm device is activated only if the monitored person is in a predetermined state and the predetermined attribute person is not present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the alarm device is activated whenever a monitored person is in a predetermined state, then the reliability of alarm detection is improved, but false alarms occur when other individuals are present in the area
Solution Approach 1:
The system applies different alarm activation rules based on the local condition of whether a predetermined attribute person is present in the monitoring area. When such a person is present, the system suppresses alarm activation to avoid false alarms; when absent, the system activates alarms for predetermined states to ensure reliable detection.
Solution Approach 2:
The alarm activation threshold dynamically changes based on the presence or absence of a predetermined attribute person in the monitoring area. The system adapts its sensitivity by adjusting whether to activate alarms for predetermined states depending on the dynamic occupancy conditions.
2Object-generated harmful factors
If the alarm device is suppressed when other individuals are present in the monitored area, then false alarms are reduced, but timely alarm detection is delayed when assistance is needed
Solution Approach 1:
The system applies different alarm suppression rules based on the local condition of presence. Only when a predetermined attribute person is present does the system suppress alarms for predetermined states, while maintaining alarm capability for other states or when the attribute person is absent.
Solution Approach 2:
The alarm suppression mechanism dynamically activates or deactivates based on real-time detection of predetermined attribute persons in the monitoring area, adjusting the system's responsiveness to match current occupancy conditions.
3Measurement precision
If the monitoring system checks for the presence of predetermined attribute persons, then alarm accuracy is improved, but the device complexity increases
Solution Approach 1:
The system introduces a determination unit as an intermediary component that specifically checks for the presence of predetermined attribute persons. This mediator layer sits between the state detection unit and alarm control unit, adding precision to alarm activation decisions without requiring complete system redesign.
Solution Approach 2:
The monitoring system is segmented into distinct functional units: state detection unit for detecting monitored person states, determination unit for checking predetermined attribute person presence, and alarm control unit for deciding alarm activation. This segmentation allows each unit to perform its specific function efficiently, improving overall system accuracy.
Data Source
AI summary
A monitoring system includes: an alarm device; a state detection unit configured to detect a state of a monitored person; an alarm control unit; and a determination unit configured to determine whether or not a predetermined attribute person, who is different from the monitored person and has a predetermined attribute, is present in an area where the monitored person is present, wherein the alarm control unit does not activate the alarm device in response to (i) a predetermined state being detected by the state detection unit and (ii) the determination unit determining that the predetermined attribute person is present in the area, and the alarm control unit activates the alarm device in response to (i) the predetermined state being detected by the state detection unit and (ii) the determination unit determining that the predetermined attribute person is not present in the area.