Personal Safety Device With Resonant Acoustic Chamber
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Solution Overview
Problem
Existing personal safety devices are often cumbersome and difficult to activate quickly, especially during emergencies, and lack efficient mechanisms for producing high-intensity audible alarms and integrated monitoring/tracking capabilities.
Innovation Solution
A personal safety device with a compact design featuring an audible alarm mechanism housed within a manually activated actuating member and acoustic chamber, optimized for resonant frequency, capable of producing 120-130 dB alarms, and integrated with monitoring and tracking features, including Bluetooth connectivity for emergency notifications and motion sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing personal safety devices use complicated activation mechanisms (pulling pins or holding buttons), then the alarm can be activated, but the activation process becomes time-consuming and difficult during emergencies
Solution Approach 1:
The device separates the alarm activation function from the silent alarm function into distinct components: a push-button for immediate audible alarm and a magnetic trigger for silent alarm. This segmentation allows each function to have its own optimized activation mechanism, resolving the contradiction by providing simple one-step activation for the audible alarm while maintaining the ability to activate silently if needed.
Solution Approach 2:
The invention extracts the alarm activation mechanism from complex multi-step processes and implements it as a simple push-button switch that directly triggers the audible alarm. This extraction eliminates unnecessary intermediate steps (like pin-pulling or button-holding) and provides immediate alarm activation with a single action.
2Adaptability or versatility
If personal safety devices include monitoring and tracking capabilities, then comprehensive safety features are provided, but device complexity and size increase
Solution Approach 1:
The device integrates multiple functions into a single unit: audible alarm, silent alarm, motion sensing, GPS tracking, and emergency notification capabilities. By making the device universal and multi-functional, it provides comprehensive safety features without requiring multiple separate devices, thus managing complexity through integration rather than proliferation of components.
Solution Approach 2:
The invention combines the audible alarm mechanism, acoustic chamber, motion sensor, and communication modules into a single integrated device housing. This merging of components reduces the overall system complexity compared to having separate devices for each function, while still providing comprehensive safety capabilities.
3Volume of moving object
If the acoustic chamber is housed within the actuating member, then device dimensions are minimized, but space for battery and other components is reduced
Solution Approach 1:
The acoustic chamber is nested within the actuating member housing, creating a compact nested structure where the alarm components are housed inside the button assembly. This nesting arrangement minimizes the overall device volume by utilizing the internal space of the actuating member rather than adding separate external chambers, thus reducing device size while maintaining battery capacity.
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 device provides a user-friendly, high-intensity alarm and comprehensive safety features, ensuring quick activation and efficient emergency response while minimizing battery consumption and device size, offering both safety and fitness monitoring capabilities.
Implementation Method 1
The alarm mechanism and the acoustic cavity are configured to have the same resonant frequency
Data Source
AI summary
Provided is a personal safety-device configured to be attached to, worn by, or carried by a user, comprising: an audible alarm mechanism configured to be selectively activated; a manually activated actuating member for selectively activating the audible alarm mechanism; and an acoustic chamber defining an acoustic cavity for amplifying the audible alarm; wherein the acoustic chamber is housed in the actuating member, wherein the alarm mechanism and the acoustic cavity are configured to have the same resonant frequency.