Emergency Siren Tone Synchronization and Location-Based Volume Scaling
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Solution Overview
Problem
Existing emergency sound systems for sirens face challenges in volume scaling and synchronization across different compliance standards and locations, which affects the alert effectiveness for emergency vehicle passage.
Innovation Solution
A system and method utilizing one or more processors to read and control tone and volume information for emergency sound generators, including frequency and volume variations over predetermined periods, to ensure synchronized and compliant emergency sound outputs across multiple sirens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the siren output volume is scaled to meet compliance standards at specific locations, then regulatory compliance is achieved, but the alert effectiveness to maximize emergency vehicle passage may be reduced
Solution Approach 1:
The system dynamically adjusts siren output volume based on real-time location data and pre-stored compliance requirements for different zones. As the emergency vehicle moves through different geographic areas, the control system automatically scales the audio output to meet the specific regulatory standards of each location while maintaining effective alert capability through adaptive volume control rather than fixed limitations
Solution Approach 2:
The system changes the volume parameter of the siren output based on the vehicle's location and the compliance requirements of different areas. By storing multiple volume level configurations corresponding to different compliance zones and automatically selecting the appropriate parameter set, the system achieves regulatory compliance without permanently reducing alert effectiveness
2Productivity
If multiple sirens are used to maximize alert effectiveness, then the emergency alert coverage is improved, but synchronization and volume scaling across different sirens becomes complex
Solution Approach 1:
The system merges the control of multiple sirens into a unified system where all sirens share common tone information and volume level data stored in memory. The processors of each siren unit read from and write to shared memory structures, allowing coordinated operation and automatic synchronization without complex inter-siren communication hardware or protocols
Solution Approach 2:
The system uses shared memory as an intermediary between multiple siren units and their control processors. Tone information and volume level data are stored in memory that all siren units can access, serving as a central coordination point that simplifies synchronization by eliminating the need for direct processor-to-processor communication or complex timing protocols
3Productivity
If the siren volume is increased to alert more people, then the alert effectiveness is improved, but compliance with location-specific volume regulations is violated
Solution Approach 1:
The system performs preliminary action by pre-storing compliance information including volume limits and tone requirements for multiple different locations in memory before the emergency vehicle departs. This advance preparation allows the real-time control system to quickly retrieve and apply the correct volume parameters based on current location without needing to calculate or determine compliance requirements during the emergency response
Solution Approach 2:
The system dynamically adjusts volume based on location rather than using a fixed high or low setting. By continuously monitoring the vehicle's position and correlating it with stored compliance data for different geographic zones, the system automatically scales the siren output to the appropriate level that both complies with local regulations and maintains effective alert capability for that specific area
Data Source
AI summary
A system, method and storage medium for providing an emergency alert includes reading tone, using one or more processors, information and volume level information corresponding to an emergency sound generator from memory coupled to the one or more processors; and controlling, using the one or more processors, an output sound of the emergency sound generator based on the tone information and volume level information. The tone information includes data of frequency variation over a predetermined period, and the volume level information includes data of volume level variation over the predetermined period.