Audio Device with Time-Lagged Light and Sound for Evacuation
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Solution Overview
Problem
Current residential fire alarms do not effectively expedite the evacuation of residents in the event of a fire, as they rely solely on auditory alerts, which may not be sufficient for hearing-impaired individuals or those in complete darkness.
Innovation Solution
An audio device that combines a sound emission unit with a light emission unit, where a time lag is introduced between the initiation of the alarm sound and the illumination of an evacuation route, ensuring quicker recognition and response to the fire by emitting both sound and light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only auditory alerts are used in fire alarms, then the device complexity is reduced, but the evacuation effectiveness deteriorates for hearing-impaired individuals and those in complete darkness
Solution Approach 1:
The patent combines auditory alert (speaker) and visual alert (light emission unit) into a single fire alarm device, creating a multi-sensory warning system that improves evacuation effectiveness for all users including hearing-impaired individuals and those in darkness
Solution Approach 2:
The fire alarm device performs multiple functions: smoke detection, auditory warning, and visual guidance. The light emission unit serves dual purposes as both an alert mechanism and an evacuation route illuminator, making the device universally effective for diverse user needs
2Reliability
If light emission is introduced to guide evacuation routes, then the effectiveness in dark environments is improved, but the device complexity increases
Solution Approach 1:
The patent integrates the light emission unit directly into the fire alarm housing, combining evacuation guidance functionality with the existing alarm structure, thereby improving dark environment effectiveness while minimizing additional complexity
3Loss of information
If a time lag is introduced between alarm sound and light emission, then the user recognition and response time is improved, but the total evacuation time increases
Solution Approach 1:
The light emission unit is activated in advance or simultaneously with the alarm sound to pre-illuminate the evacuation route. This preliminary lighting action allows users to immediately see the escape path upon hearing the alarm, improving response efficiency without significant time penalty
Solution Approach 2:
The patent employs periodic or alternating patterns of light emission synchronized with alarm cycles, creating a coordinated sensory rhythm that enhances user awareness and directional guidance while maintaining efficient evacuation timing
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 simultaneous use of sound and light alerts, with a controlled time lag, facilitates faster evacuation by providing visual cues, thereby reducing evacuation time and improving response efficiency, especially in dark environments.
Implementation Method 1
a light emission unit (12)
Data Source
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AI summary
An object of the present disclosure is to contribute to evacuating a person in an even shorter time. An audio device (1) is to be installed in a structural component. The audio device (1) includes a control unit (10), a first emission unit (11), and a second emission unit (12). The control unit (10) determines, in accordance with information provided about a particular event, whether or not the particular event is present. The first emission unit (11) emits, when the control unit (10) determines that the particular event be present, a sound to alert a person to the presence of the particular event. The second emission unit (12) emits light in accordance with the information. A time lag (T0) is provided between a first timing (T1) when the sound starts being emitted and a second timing (T2) when the light starts being emitted.