AGV LIDAR Layout and Suspension for Obstacle-Rich Navigation
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Solution Overview
Problem
Automated guided vehicles (AGVs) face challenges in navigating through dynamic environments with obstacles and humans, requiring efficient obstacle avoidance and human detection systems that do not interfere with material handling operations while maintaining stability on uneven terrain.
Innovation Solution
The AGV is equipped with a peripheral sensory system using LIDAR sensors and a suspension system with freely rotating casters and intersecting swing arms to maintain contact with the ground, allowing for navigation and obstacle avoidance, and a robotic arm for material handling, integrated with a navigation and guidance system for precise trajectory control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LIDAR sensors and sensory systems are added to detect obstacles and humans, then safety and obstacle avoidance capability are improved, but device complexity increases
Solution Approach 1:
The AGV divides its sensory system into multiple specialized LIDAR sensors positioned at different locations (front, rear, sides) and orientations. Each sensor segment covers specific zones, collectively providing comprehensive 360-degree obstacle and human detection without requiring a single complex sensor system
Solution Approach 2:
The LIDAR sensors serve multiple functions simultaneously: obstacle detection, human detection, navigation, and path planning. This multi-functionality reduces the need for separate specialized sensors, managing system complexity while maintaining high safety standards
2Adaptability or versatility
If suspension system with freely rotating casters and intersecting swing arms is used to maintain stability on uneven terrain, then adaptability to terrain is improved, but device complexity increases
Solution Approach 1:
The suspension system employs freely rotating casters and intersecting swing arms that dynamically adjust their configuration in response to terrain variations. This dynamic adaptation allows the AGV to maintain stability on uneven surfaces without requiring a complex active control system, as the mechanical design passively responds to ground conditions
Solution Approach 2:
The suspension system combines multiple functional elements (casters, swing arms, linkages) into an integrated mechanical assembly that simultaneously provides navigation, stabilization, and terrain adaptation functions, reducing overall system complexity compared to separate systems for each function
3Productivity
If robotic arm and material handling apparatus are integrated on the AGV, then productivity is improved, but device complexity and space requirements increase
Solution Approach 1:
The robotic arm is designed as a multi-functional apparatus capable of performing multiple material handling tasks including picking, placing, manipulating objects, and interacting with workers. This universality allows a single integrated system to replace multiple separate material handling devices, improving productivity while managing complexity
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 AGVs to efficiently navigate around obstacles, maintain stability on uneven surfaces, and perform material handling tasks with precision, ensuring safe and reliable operation in dynamic environments.
Implementation Method 1
peripheral sensory system using LIDAR sensors
Data Source
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Figure 3
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AI summary
An automated guided vehicle (AGV) comprising: a base frame having an upper portion configured to support a material handling apparatus; a propulsion system adapted to propel the base frame; first and second directional sensors disposed at opposing ends of the base frame and at least one operable to emit a sensor field within at least one slot disposed between the upper portion and a lower portion of the base frame; and wherein the sensor fields of the first and second directional sensors each comprise coverage of at least 180 degrees in a substantially horizontal plane and are arranged to provide a combined sensor field substantially surrounding the AGV.