Intelligent Warehouse Robots (AGVs/AMRs): 3D Environment Perception and Stereoscopic Obstacle Avoidance

Scenario Requirements and Pain Points:
In automated warehouses with dense storage, AGVs and AMRs need to swiftly navigate through narrow aisleways between shelves. Traditional 2D LiDAR sensors can only scan a single plane at a fixed height above the ground—typically around 20 cm—leaving significant vertical blind spots. As a result, low obstacles on the ground—such as dropped delivery boxes or abandoned pallet blocks—or suspended objects slightly above the ground—such as pallet corners protruding from the bottom of shelves—often go completely unnoticed by 2D LiDAR. This makes robots highly susceptible to undercarriage scrapes, cargo collisions, or even impacts against shelf uprights, potentially leading to serious safety incidents.

Application Logic:
A T51 or T53 3D depth-imaging LiDAR is embedded and mounted at the front of the AGV/AMR vehicle body. As shown in the figure, the LiDAR projects a wide-field-of-view planar laser beam in the direction of travel, acquiring high-density 3D point cloud data of the preceding aisle in real time.
Full-space coverage: The system is no longer limited to protection along a single “line”—instead, it has built a **“three-dimensional safety cone”** that covers everything from the ground up to the bottom of the shelves. Whether it’s foreign objects underfoot or obstacles positioned to the side and ahead, as soon as they enter this 3D space, they’re immediately detected.
Intelligent Recognition: By leveraging depth image data, the algorithm can distinguish between “thresholds that can be stepped over” and “obstacles that must be avoided,” enabling smarter passage strategies.

Technological Advantages:
The T51/T53 adopts a pure solid-state technology approach, featuring no mechanical rotating components internally. Its structure is extremely compact and highly shock-resistant and durable, making it an ideal match for the limited installation space available in AGVs. The high-resolution depth maps it provides can clearly reconstruct the three-dimensional environmental features within aisles. Compared to single-line LiDAR sensors, it completely eliminates vertical blind spots, significantly enhancing the robot’s perception capabilities and operational safety in complex, dynamic, and unstructured warehouse environments.

Keywords:

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Mobile robot

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Image and Text Details

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