Transport Vehicle Path Retracing After Marker Detection Failure
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Solution Overview
Problem
Transport vehicles in marked facilities often fail to detect location markers, leading to navigation faults and requiring human intervention, which disrupts operations and reduces efficiency.
Innovation Solution
The transport vehicle records its movement pattern and retraces its path when unable to detect a location marker, repeatedly attempting to reach the destination until a threshold value is reached, allowing it to autonomously recover from navigation faults without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transport vehicle transits along the path based on location markers, then the transport vehicle can navigate to the destination, but the transport vehicle may fail to detect the location marker due to various reasons such as poor condition of the marker or high speed of the vehicle
Solution Approach 1:
The system performs preliminary actions by recording the movement pattern and halting at an intermediate location before fully committing to the failed navigation attempt. This allows the vehicle to backtrack and retry from a known good position, preventing complete navigation failure.
Solution Approach 2:
The system implements feedback by monitoring detection status and automatically triggering a backtrack operation when detection failure is detected. This closed-loop feedback mechanism enables the vehicle to respond to detection issues and recover autonomously.
2Reliability
If the transport vehicle comes to a halt when it determines that it has failed to detect the second location marker, then the vehicle can identify the navigation fault, but human intervention is required which consumes time and reduces operational efficiency
Solution Approach 1:
The transport vehicle performs self-service by autonomously executing the backtrack operation and re-attempting navigation without human intervention. The vehicle records its movement pattern, halts at an intermediate location, retraces its path, and re-attempts detection, thereby serving itself to resolve navigation faults.
Solution Approach 2:
The system records the movement pattern as a preliminary action that enables subsequent autonomous recovery. By having this recorded data available before intervention is needed, the vehicle can immediately backtrack and retry navigation without waiting for human commands.
3Object-affected harmful factors
If the vicinity of the transport vehicle is cordoned off to prevent hazards such as collisions with other transport vehicles during navigation fault, then safety is improved, but the throughput and efficiency of operations in the marked facility are severely affected
Solution Approach 1:
The system performs preliminary cordoning off of the vicinity before the transport vehicle actually halts and begins backtracking. This advance preparation allows the vehicle to safely execute its autonomous recovery maneuver without creating collision hazards, while the pre-planned nature of the operation minimizes disruption to facility throughput.
Data Source
AI summary
A method and a system for traversing a planned path in a marked facility are provided. A transport vehicle transits from a first location to a second location in the marked facility for traversing the planned path. The first and second locations are indicated by first and second location markers, respectively. The transport vehicle records a movement pattern of the transport vehicle, while transiting from the first location to the second location. The transport vehicle halts at an intermediate location when the transport vehicle fails to detect the second location marker at the second location. A first path traversed to reach the intermediate location from the first location is retraced by the transport vehicle based on the recorded movement pattern. On reaching the first location, the transport vehicle re-attempts to transit from the first location to the second location.