Laser AGV Navigation Without Reflective Plates
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Solution Overview
Problem
Existing laser automatic guided vehicles (AGVs) require reflective plates for positioning and obstacle avoidance, which limits their flexibility and accuracy, as they need to be installed and reinstalled in new areas, and are sensitive to plate movement.
Innovation Solution
A laser AGV system without reflective plates, utilizing a laser scanner, upper and lower computer systems, actuators, and input/output devices for autonomous navigation, where the laser scanner converts reflected laser signals into electric signals for path planning and control, and actuators with rotary encoders and angle sensors enable feedback control for precise movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reflective plates are used for laser AGV positioning, then positioning function can be achieved, but installation complexity increases and flexibility decreases
Solution Approach 1:
The patent removes the reflective plates from the system entirely. The laser scanner directly scans environmental features (walls, floors, ceilings) to build maps and determine position, eliminating the need for installing and maintaining reflective plates while achieving positioning functionality through direct environmental scanning.
Solution Approach 2:
The system uses the environment itself as the positioning reference. The laser scanner scans existing environmental features which automatically serve as positioning markers, eliminating the need for separate positioning infrastructure like reflective plates.
2Measurement precision
If reflective plates are installed in operation area, then laser scanning positioning is enabled, but adaptability to new areas decreases
Solution Approach 1:
The laser scanner serves multiple functions: it scans environmental features for map building, identifies positioning markers in any environment, and enables navigation. This universal scanning capability allows the system to adapt to any new area without requiring area-specific reflective plate installation.
Solution Approach 2:
The system performs preliminary environmental scanning to build a map and identify positioning markers before actual navigation begins. This preliminary action enables the system to adapt to new areas autonomously without requiring pre-installed reflective plates or manual area configuration.
3Ease of operation
If reflective plates are used for positioning, then path planning is possible, but system reliability decreases due to plate movement sensitivity
Solution Approach 1:
The patent replaces the mechanical reflective plate system with an optical scanning system. The laser scanner uses optical beams to scan environmental features and detect positioning markers, eliminating the mechanical components (reflective plates) that are sensitive to movement and installation errors.
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 autonomous navigation and obstacle avoidance without reflective plates, enhancing flexibility and accuracy by building original and effective maps, and adjusting speed and posture for precise destination arrival, making the system suitable for various environments.
Implementation Method 1
a laser emitting unit configured to emit a laser beam
Implementation Method 2
the laser beam reflected by the object
Implementation Method 3
a laser receiving unit configured to receive the laser beam reflected by the object and convert the laser beam into an electric signal
Data Source
AI summary
The present invention relates to the technical field of transportation devices. Provided is a laser automatically guided vehicle (AGV) without a reflecting panel, comprising: a laser scanner (1), a vehicle (2), an upper computer system, a lower computer system, an execution mechanism (3) and an input/output device; the upper computer system receives electric signals from the laser scanner (1) and processes the electric signals to make an original map and an effective map, and plans a route to obtain the shortest route, and then sends a control instruction to the execution mechanism (3); a turning encoder and an angle sensor transmit data such as turning speed and angle to the upper computer system to realize feedback control, thereby conducting autonomous navigation of the vehicle. The laser automatically guided vehicle (AGV) without a reflecting panel can achieve positioning and obstacle avoidance for the laser automatically guided vehicle (AGV) without the installation of a reflecting panel, thus improving environmental adaptability.