Mobile Platform Speed Control at Blind Intersections
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Solution Overview
Problem
Self-moving mobile platforms face challenges in safely navigating intersections and bottlenecks due to restricted sensor visibility from aisle walls, requiring complex infrastructure measures to prevent collisions, which are costly and difficult to monitor.
Innovation Solution
The method involves using lateral distance sensors to reduce the maximum speed of the mobile platform when it approaches lateral obstacles, maintaining a safer distance to avoid collisions and allow timely reaction in potentially dangerous situations, eliminating the need for additional infrastructure by dynamically adjusting speed based on proximity to side walls and objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mobile platform maintains high speed, then productivity is improved, but safety is worsened due to restricted sensor visibility at intersections
Solution Approach 1:
The mobile platform dynamically adjusts its speed based on real-time sensor data about lateral obstacles and intersections. The control system continuously monitors the environment and modulates speed to maintain safety while optimizing productivity, transitioning between high-speed travel and reduced-speed safety zones without manual intervention.
Solution Approach 2:
The system uses sensor feedback from lateral distance sensors and intersection detection mechanisms to continuously monitor the environment. This feedback loop enables the control system to identify restricted visibility zones and automatically adjust speed accordingly, ensuring safety is maintained while minimizing productivity impact.
2Reliability
If additional infrastructure measures are implemented to detect intersections, then safety is improved, but device complexity increases
Solution Approach 1:
The mobile platform uses its own sensors to detect and identify intersections autonomously without requiring external infrastructure. The system processes environmental data from lateral distance sensors and other onboard sensors to recognize intersection patterns, eliminating the need for RFID markings, optical markers, or other external detection infrastructure.
Solution Approach 2:
The lateral distance sensors serve multiple functions: they detect lateral obstacles, identify intersections, and provide data for speed control. This multi-functionality eliminates the need for dedicated intersection detection infrastructure, reducing system complexity while maintaining safety.
3Productivity
If the mobile platform travels close to aisle walls, then productivity is improved by optimizing path, but safety is worsened due to restricted field of view
Solution Approach 1:
The mobile platform dynamically adjusts its lateral position and speed based on real-time sensor data. When approaching intersections or detecting lateral obstacles, the system automatically modifies its trajectory to maintain safe clearance, balancing path optimization with safety requirements through continuous environmental monitoring and adaptive control.
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
This approach effectively reduces the risk of collisions in intersections and bottlenecks by ensuring the mobile platform can stop or evade obstacles, allowing people time to react, while maintaining high speeds in safe areas, thus enhancing safety without additional infrastructure or complex algorithms.
Implementation Method 1
distance sensors are used that can detect frontal obstacles based on wave propagation time measurements
Data Source
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AI summary
In a method for operating a self-propelled mobile platform (30) equipped with at least one sensor (33, 37) for detecting obstacles in the vicinity of the mobile platform (30), the speed of the mobile platform (30) is reduced depending on a distance between the mobile platform and obstacles arranged along the travel path.