Drowning Alarm System Using Hall-Effect Position Detection
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Solution Overview
Problem
Existing drowning alarm systems often trigger false alarms due to non-drowning events, affecting the swimming experience and rescuer fatigue, and require wearable detection devices that can cause additional false alarms when dropped.
Innovation Solution
A drowning alarm system comprising a submerging detection device, a position detection device, and a signal transmitting device that generates alarms only when the submerging detection device is submerged for an extended period and within a preset range, reducing false alarms by using a non-invasive oxygen detection mechanism and position determination via Hall-effect or magnetic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gesture-based detection is used to identify drowning events, then drowning detection capability is improved, but false alarm rate increases due to non-drowning activities
Solution Approach 1:
The detection system is segmented into multiple independent detection modules: submerging detection device, position detection device, and signal transmitting device. Each module performs a specific function, and their combined output determines the final alarm state, reducing false alarms from single-parameter misinterpretation
Solution Approach 2:
The system transitions from two-dimensional gesture analysis to three-dimensional spatial-temporal detection by adding position detection (distance from shore) and time-based submerging duration analysis, creating a multi-dimensional detection space that better distinguishes drowning from playful behavior
2Reliability
If wearable detection devices such as bracelets and rings are used, then drowning detection capability is improved, but false alarm rate increases due to device dropping
Solution Approach 1:
The system introduces position detection device as an intermediary that verifies whether the submerging detection device is in a valid monitoring zone before triggering an alarm. This intermediary layer prevents false alarms from dropped devices by checking spatial context
Solution Approach 2:
The system uses the position detection device to monitor the submerging detection device's location, allowing the system to self-verify the validity of alarm triggers and eliminate false alarms from device malfunction or dropping
3Object-generated harmful factors
If submerging detection with time threshold is implemented, then false alarm prevention is improved, but response time to actual drowning events may be delayed
Solution Approach 1:
The system dynamically adjusts the time threshold parameter based on the detection context. When position detection confirms the swimmer is in the monitoring zone and submerging patterns match drowning characteristics, the effective threshold is reduced, enabling rapid response while maintaining false alarm prevention
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
The system effectively prevents false alarms by accurately distinguishing drowning events from non-drowning activities and alerts rescuers only when necessary, enhancing swimming safety and reducing fatigue.
Implementation Method 1
a submerging detection device configured to detect whether or not the submerging detection device is submerged
Implementation Method 2
position determination via Hall-effect or magnetic components
Data Source
AI summary
A drowning alarm system and a drowning alarm method. The drowning alarm system includes a submerging detection device, a position detection device and a signal transmitting device. The submerging detection device configured to detect whether or not the submerging detection device is submerged, and generate a submerging alarm instruction when the submerging detection device is submerged. The position detection device configured to determine whether or not the submerging detection device is within a preset range, and generate a distance information instruction when the submerging detection device is within the preset range. The signal transmitting device configured to transmit a first alarm signal when the submerging detection device generates the submerging alarm instruction and the position detection device generates the distance information instruction. The drowning alarming system with false alarm prevention function is realized.