Ambient Condition Detector Battery Conservation via Motion-Triggered Alarm Modes
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Solution Overview
Problem
Ambient condition detectors, such as carbon monoxide and smoke detectors, face battery life issues when in full alarm mode, transitioning to soft alarm mode to conserve energy, but this may lead to users disregarding intermittent signals, especially when they enter the monitored area late, as there's no guarantee of timely action from users communicating with smart devices.
Innovation Solution
Incorporating a motion sensor to detect user presence, allowing the detector to revert to full alarm mode for a predetermined time when motion is detected, ensuring effective alarm communication and conserving battery life by alternating between full and soft alarm modes based on user activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detector operates in full alarm mode continuously, then the alarm notification is effective and reliable, but the battery life is depleted quickly
Solution Approach 1:
The system dynamically switches between full alarm mode and soft alarm mode based on detected user presence. When motion is detected, the system transitions to full alarm mode for effective notification. When no motion is detected, it transitions to soft alarm mode to conserve battery life. This dynamic adaptation resolves the contradiction by making the alarm effectiveness and battery consumption conditional on user presence.
Solution Approach 2:
The motion sensor provides feedback about user presence to the control circuitry, which then adjusts the alarm mode accordingly. This feedback loop enables the system to respond to actual conditions (user presence) and optimize the balance between alarm effectiveness and battery consumption in real-time.
2Duration of action of moving object
If the detector transitions to soft alarm mode to conserve battery, then battery life is extended, but the alarm signal may be disregarded by users entering the monitored area late
Solution Approach 1:
The motion sensor operates in advance to detect user presence before the alarm signal might be missed. By detecting motion and triggering full alarm mode proactively, the system ensures that users entering the monitored area late will still receive effective alarm notification, preventing the reliability issue while maintaining battery conservation through selective mode switching.
3Reliability
If the detector uses motion detection to switch alarm modes, then alarm effectiveness is improved, but device complexity increases
Solution Approach 1:
The motion sensor serves multiple functions: it detects user presence for alarm mode switching, and can potentially serve other security or monitoring functions. This multi-functionality justifies the added complexity by providing multiple benefits from a single added component, reducing the net increase in system complexity while improving alarm effectiveness.
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
This approach ensures timely and effective alarm notification to users, enhancing the reliability of ambient condition detectors by maintaining full alarm mode when users are present, thus reducing the risk of signal dismissal and optimizing battery life.
Implementation Method 1
a motion sensor in the monitored region to detect motion
Data Source
AI summary
Systems and methods of effectively communicating alarm conditions by making efficient use of the limited battery life in ambient condition detectors are provided. In some systems and methods, an ambient condition detector in a monitored region can be associated with a motion sensor. When the motion sensor detects motion in the monitored region, the detector can exit a soft alarm mode and enter a full alarm mode for a predetermined period of time.