Robot Voice Emergency Stop via Sound Volume Threshold
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Solution Overview
Problem
Existing emergency stop systems for robots struggle to respond to shouts without vowels and noise generated by collisions or equipment falling, limiting their effectiveness in urgent situations.
Innovation Solution
A robot system equipped with a voice operation device and controller that suppresses robot operations when detecting a voice with a sound volume equal to or higher than a predetermined level, allowing for immediate response to loud voices or collision noises.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acoustic characteristics analysis is used to detect shouts, then the system can identify emergency voices, but it cannot detect shouts without vowels or collision noises
Solution Approach 1:
The patent changes the detection parameter from acoustic characteristics (vowel presence) to sound volume threshold. By monitoring whether sound volume exceeds a predetermined threshold, the system can detect all types of loud sounds including shouts without vowels and collision noises, resolving the limitation of the previous system.
2Speed
If the robot responds to all loud sounds, then emergency response capability is improved, but false activation may occur
Solution Approach 1:
The patent sets a predetermined sound volume threshold in advance. This preliminary parameter configuration allows the system to quickly compare incoming sounds against the threshold and respond immediately when exceeded, achieving fast emergency response while maintaining reliability through the pre-established criterion.
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 the robot system to effectively stop or modify its operations in response to loud voices or significant sounds, enhancing safety in coexistence with humans and preventing damage from collisions.
Implementation Method 1
a voice operation device detects a voice with a sound volume which is equal to or higher than a first predetermined sound volume
Data Source
AI summary
A robot system which includes a robot with a plurality of joints; a voice operation device to which a voice operation command is input by an operator; and a controller which controls an operation of the robot, the controller being configured to change the operation of the robot, in a case where the voice operation device detects a voice with a sound volume which is equal to or higher than a first predetermined sound volume which is preset, during the operation of the robot.