Smart Speaker Emergency Notification System
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Solution Overview
Problem
Conventional emergency notification systems in facilities are limited in covering a broad range of emergencies and do not allow for efficient allocation of response resources, as they rely on point-of-problem alarms rather than comprehensive alerts.
Innovation Solution
A voice-initiated emergency notification system using smart speakers that identifies emergencies through voice recognition, confirms alerts via audible messages, and sends notifications to appropriate responders through a network, incorporating noise cancellation and multi-sensory responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional point-of-problem alarm systems are used, then simple emergency detection is achieved, but comprehensive coverage of various emergency types and efficient resource allocation cannot be realized
Solution Approach 1:
The smart speaker system is designed to handle multiple types of emergencies (fire, medical, terrorism, chemical leakage, flood) through a single unified voice-activated interface, replacing the need for separate specialized alarm systems for each emergency type. The system uses voice recognition to identify different emergency scenarios and routes them to appropriate response resources.
Solution Approach 2:
The patent introduces a confirmation message intermediary step between voice detection and emergency notification transmission. The system plays back a confirmation message to verify the observer's intent before sending the actual emergency alert, preventing false alarms while maintaining comprehensive emergency coverage.
2Measurement precision
If voice recognition systems are implemented in smart speakers, then accurate emergency identification is achieved, but microphone sensitivity to loudspeaker interference worsens
Solution Approach 1:
The system applies noise cancellation processing to the microphone signal before voice recognition analysis. This preliminary anti-action counteracts the harmful interference from the loudspeaker output, allowing the voice recognition system to accurately detect and process emergency-related voice inputs even during active alarm states.
3Reliability
If confirmation messages are implemented, then false alarm reduction is achieved, but response time increases
Solution Approach 1:
The confirmation message system uses partial action by only requiring verification for detected emergency patterns, rather than requiring confirmation for all system activities. The voice recognition system quickly identifies potential emergencies and presents confirmation only when needed, maintaining fast response times while reducing false alarms.
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
Enables efficient and comprehensive emergency response by allowing voice-activated alerts for various emergencies, ensuring accurate and timely notifications to first responders, even in complex situations like concurrent fires and medical emergencies.
Implementation Method 1
Noise cancellation circuitry prevents loudspeaker interference with microphone output
Implementation Method 2
A voice recognition system recognizes key words in the observer's voice message
Data Source
AI summary
A smart speaker system is used as an emergency notification system. The smart speaker has a loudspeaker, a microphone, a visual display, processing capability, and an emergency flasher in the same enclosure. The smart speaker is in communication with a network-connected server providing at least distribution of emergency notification messages to appropriate clients. The amount of audio processing shared between the smart speaker and the server may vary, depending on the requirements of the installation site. Once an emergency voice communication is detected in the microphone output, the system generates a confirmation message that is played over the loudspeaker. Upon detection of an appropriate voice response from the user, the system generates an emergency response message, sends it to the distribution network, and activates the visual display, loudspeaker, and emergency flasher. Noise cancellation circuitry prevents loudspeaker interference with microphone output.