Transport Vehicle Recovery Control After Power Interruption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing transport facilities face issues with transport vehicles resuming operation after a power outage, leading to potential additional failures due to inappropriate recovery processes, especially when vehicles are manually moved or indicate abnormalities.
Innovation Solution
A control system that obtains and compares preliminary and post-restoration operating state information to determine which transport vehicles are suitable for automatic recovery, allowing only those vehicles to resume operation in their previous state, thereby reducing the likelihood of further abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all transport vehicles resume operation immediately after power restoration, then the operating rate of the facility is improved, but the risk of additional failures increases due to vehicles in inappropriate states (manually moved or abnormal)
Solution Approach 1:
The control system performs preliminary actions by obtaining and storing operating state information before power interruption, then comparing it with post-restoration state information to determine appropriate recovery targets. This preliminary preparation enables selective recovery of only those transport vehicles in suitable states, preventing additional failures while maintaining high operating rate.
2Ease of operation
If automatic recovery is performed on all transport vehicles, then the operator workload is reduced, but the likelihood of causing additional abnormalities increases
Solution Approach 1:
The control system implements feedback by obtaining operating state information from transport vehicles, comparing pre-interruption and post-restoration states, and using this feedback to determine which vehicles are appropriate for automatic recovery. This feedback mechanism enables intelligent selection of recovery targets, reducing operator workload while preventing abnormalities in vehicles that require manual intervention.
3Productivity
If transport vehicles store stop position information during power interruption, then the ability to resume operation is improved, but the potential for additional failures increases when vehicles are in specific states (manually moved or abnormal)
Solution Approach 1:
The control system performs preliminary action by obtaining and storing operating state information (including stop position) before power interruption occurs. This stored information is then compared with post-restoration state information to identify transport vehicles that are appropriate for automatic recovery, enabling safe resumption of operation while avoiding vehicles that may have been manually moved or are in abnormal states.
Solution Approach 2:
The system uses feedback by comparing the stored pre-interruption operating state information with the current post-restoration state information. This comparison provides feedback on whether a transport vehicle is in a suitable state for automatic recovery, thereby enabling productive resumption while preventing additional failures in vehicles with unauthorized position changes or abnormalities.
Data Source
AI summary
A transport facility includes a plurality of transport vehicles that transport articles and a control system that controls the transport vehicles. Each transport vehicle includes a transporter. The control system performs, in response to electric power supply to the transport vehicles being interrupted, an interruption information obtaining process of obtaining an operating state information of each transport vehicle as preliminary operating state information. The control system performs, after the electric power supply is restored, a post-restoration information obtaining process of obtaining the operating state information of each transport vehicle as post-restoration operating state information. The control system performs an automatic recovery target determination process of determining whether each transport vehicle is a target of automatic recovery based on a result of comparison between the preliminary operating state information and the post-restoration operating state information.