AGV Abnormality Notification via Nearby Sheet Metal Machines
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Solution Overview
Problem
In sheet metal processing facilities, automated guided vehicles (AGVs) often stop due to abnormalities, and existing notification methods, such as alarms and lights, are ineffective due to noise and worker absence, leading to delayed restoration operations.
Innovation Solution
An AGV system that includes an abnormality detection sensor, a notification destination specifying unit, and a notification information transmission control unit to wirelessly transmit information about the abnormality to nearby sheet metal processing machines, ensuring quick and accurate notification to workers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a management device is used to centrally manage all automated guided vehicles in a facility, then the operation status can be monitored, but the system configuration becomes complicated and the cost for system construction and management becomes high
Solution Approach 1:
The patent divides the notification function into two segments: the AGV itself performs local notification through alarms and display devices, while the management device only handles centralized monitoring. This segmentation eliminates the need for the management device to directly notify workers, simplifying the system configuration while maintaining operational monitoring capabilities.
2Productivity
If the size of a facility is large, then more automated guided vehicles can be deployed, but it takes time for workers to reach a stopped automated guided vehicle and the restoration operation takes long
Solution Approach 1:
The AGV is equipped with alarm devices and display devices that immediately notify workers of abnormalities before workers need to physically locate the vehicle. This preliminary notification action enables workers to prepare for restoration tasks while moving toward the AGV, reducing the overall restoration time in large facilities.
3Loss of information
If traditional alarm devices and display devices are used to notify workers of abnormalities, then information can be output, but in noisy environments workers may not perceive the alarm and in some positions no workers are present
Solution Approach 1:
The AGV employs multiple notification methods simultaneously - alarm devices for auditory notification, display devices for visual notification, and wireless communication for electronic notification. This multi-functional approach ensures that at least one notification method reaches workers regardless of environmental conditions or worker positions, significantly improving notification reliability.
Data Source
AI summary
An automated guided vehicle travels in a sheet metal processing facility in which a plurality of sheet metal processing machines are installed. The automated guided vehicle includes an abnormality detection sensor for detecting an abnormality that has occurred while the automated guided vehicle is traveling, a notification destination specifying unit for specifying a sheet metal processing machine as a notification destination of a state of the abnormality, from the plurality of sheet metal processing machines when the abnormality detection sensor detects the abnormality, and a notification information transmission control unit for wirelessly transmitting information for notifying the state of the abnormality, to the sheet metal processing machine as the notification destination specified by the notification destination specifying unit.