Audio Signaling for Autonomous Vehicle Control in Network Dead Zones
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Solution Overview
Problem
Autonomous machines lack effective control mechanisms in areas with limited or no communication networks, necessitating a reliable system for initiating actions such as emergency stops without relying on traditional communication systems.
Innovation Solution
An audio signaling system that includes a field audio system emitting specified audio tones, an audio control system to process and interpret these tones, and an automation control system to execute corresponding actions, utilizing audio inputs and outputs to manage machine operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional communication networks are used for controlling autonomous machines, then control reliability is improved in areas with network coverage, but control capability is lost in dead zones or areas with unavailable networks
Solution Approach 1:
The patent introduces audio signals as an intermediary communication medium between the controller and autonomous machines. Audio output devices emit sound waves that carry control instructions, and audio input devices on the machines receive these signals. This intermediary audio communication channel enables control in areas where traditional wireless networks are unavailable, resolving the contradiction between reliability in covered areas and adaptability to uncovered areas.
2Area of stationary object
If audio signaling system is implemented to extend control range, then control coverage area is improved, but system complexity increases due to additional audio input/output devices
Solution Approach 1:
The patent makes the audio input and output devices multi-functional components. The audio output device not only emits control signals but can also serve as a warning device for machine operations. The audio input device receives both control instructions and operational feedback sounds. This multi-functionality reduces the need for separate dedicated devices, thereby limiting the increase in system complexity while expanding control coverage.
3Reliability
If audio signals are used for control instructions, then control effectiveness is improved in network-denied areas, but signal detection accuracy may be affected by environmental noise
Solution Approach 1:
The patent implements a feedback mechanism where the audio input device continuously monitors the audio environment and provides feedback to the control system. The controller analyzes this feedback to distinguish between operational sounds (like machine warnings) and control signals, and to filter out environmental noise. This feedback loop improves signal detection accuracy despite noisy environments, while maintaining control effectiveness in network-denied areas.
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 control of autonomous machines across large areas with unreliable communication networks by ensuring timely and accurate execution of actions based on audio signals, enhancing operational safety and flexibility.
Implementation Method 1
The audio output device emits the audible tone or tone pattern
Implementation Method 2
The audio input device captures sound
Data Source
AI summary
An audio signaling system for automated machines facilitates action controls for a machine or fleet of machines. The audio signaling system may use audio tones and audio recognition for specified actions such as emergency stops. The system may include a field audio output system and onboard audio control systems. Audio control systems may include audio recognition and be integrated with automation control systems.