Authority Vehicle Direction Detection via Acoustic Signal Analysis
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Solution Overview
Problem
Autonomous vehicles face challenges in detecting and responding to authority vehicles based on audio characteristics, as existing technologies do not effectively utilize acoustic signals to determine direction of movement and initiate appropriate vehicle responses.
Innovation Solution
The system uses audio capture devices to receive and analyze acoustic signals from authority vehicles, determining signal characteristics such as frequency, intensity, and phase to determine the direction of movement, and initiate vehicle response measures like alertness level changes, automated braking, or route modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If autonomous vehicles use audio capture devices to detect acoustic signals from authority vehicles, then the ability to detect direction of movement is improved, but the complexity of the detection system increases
Solution Approach 1:
The system divides the detection task into multiple independent components: audio capture devices for signal acquisition, signal processing units for analyzing acoustic characteristics, and a control system for determining direction of movement. This segmentation allows each component to specialize in a specific function, improving overall detection precision while managing system complexity through modular architecture
Solution Approach 2:
The audio capture devices and signal processing system are designed to perform multiple functions: detecting direction of movement, determining proximity of authority vehicles, and providing alertness level information. By making the detection system multi-functional, the patent reduces the need for separate specialized systems, thereby improving measurement capabilities without proportionally increasing device complexity
2Speed
If the vehicle responds automatically to detected authority vehicles, then the response time is improved, but the risk of false responses increases
Solution Approach 1:
The system continuously monitors acoustic signals and compares detected characteristics against expected patterns from authority vehicles. This feedback mechanism allows the system to verify detections before triggering responses, reducing false positives while maintaining fast response times through real-time signal analysis and pattern matching
Solution Approach 2:
The system pre-establishes criteria for authority vehicle detection, including expected acoustic signal characteristics, frequency ranges, and directional patterns. By having these criteria predetermined, the system can quickly compare incoming signals against known patterns without complex real-time decision-making, thereby achieving fast response times while maintaining reliability through pre-validated detection thresholds
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 autonomous vehicles to accurately detect the direction of authority vehicles and respond appropriately, enhancing safety by utilizing acoustic signals to assess proximity and movement without human intervention.
Implementation Method 1
acoustic signals emitted from a signal source associated with an authority vehicle are received at audio capture devices associated with a vehicle
Implementation Method 2
Signal characteristics of the acoustic signals can be determined including, without limitation, a frequency, a sound intensity, and/or a phase of the acoustic signals
Data Source
AI summary
Described herein are systems, methods, and non-transitory computer readable media for determining a direction of movement of an authority vehicle in relation to another vehicle such as an autonomous vehicle and initiating or ceasing a vehicle response measure that may have previously been initiated based on the determined direction of movement. A signal source associated with the authority vehicle emits a periodic acoustic signal that is received at one or more audio capture devices, which may be provided at various locations on an exterior of a vehicle. One or more signal characteristics of the acoustic signal can be determined such as frequency, sound intensity, and/or phase. Detected signal characteristic(s) of the acoustic signal can be analyzed, and in some cases, compared against known information such as an expected frequency of the acoustic signal to determine the direction of movement of the authority vehicle in relation to the vehicle.