Structured light module and self-moving device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing laser sensors are unable to meet the increasing demands of various applications, particularly in obstacle recognition and avoidance, due to limitations in detecting comprehensive environmental information.
Innovation Solution
A structured light module comprising a first camera, line laser emitters, and a second camera, which collects environmental images with and without laser stripes, enabling more accurate detection of environmental information through the combination of 3D data and visible light imagery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single laser sensor is used for obstacle detection, then the device structure remains simple, but the measurement precision and comprehensive environmental information detection are insufficient
Solution Approach 1:
The patent divides the laser sensing system into multiple independent line laser sensors positioned at different locations (front, rear, left, right sides of the device). Each sensor captures environmental information from its specific direction, and the main controller integrates data from all sensors to achieve comprehensive 360-degree environmental mapping with high measurement precision.
Solution Approach 2:
The patent combines multiple line laser sensors, imaging cameras, and infrared sensors into a unified sensing system. The main controller merges data from these different sensor types to create a comprehensive environmental model, achieving both high measurement precision and complete environmental awareness while maintaining coordinated system operation.
2Measurement precision
If multiple sensors are added to improve detection accuracy, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The main controller serves multiple functions: it processes data from line laser sensors for 3D mapping, handles imaging camera data for visual recognition, integrates infrared sensor information for thermal detection, and coordinates obstacle avoidance maneuvers. This multi-functional design allows the system to achieve high object recognition accuracy without proportionally increasing control system complexity.
Solution Approach 2:
The main controller acts as an intermediary that standardizes and integrates data from various sensor types with different output formats. It unifies the processing of laser range data, image data, and infrared signals into a common environmental representation, simplifying the integration of multiple sensors while maintaining high recognition accuracy.
3Loss of information
If line laser sensors are used for 3D environmental mapping, then the environmental information completeness improves, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent uses line laser sensors to capture environmental data in three dimensions (range, azimuth, elevation) rather than traditional two-dimensional imaging. By emitting laser lines at different angles and capturing their reflections, the system constructs comprehensive 3D point cloud data that completely represents the environmental structure, overcoming the limitations of planar imaging.
Solution Approach 2:
The system implements feedback mechanisms where the main controller continuously monitors data quality from line laser sensors and adjusts measurement parameters in real-time. Based on detected environmental features and measurement uncertainties, the controller modifies laser emission patterns and data sampling rates to optimize information completeness while managing processing 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
Enhances the accuracy of object recognition and environmental mapping, improving the success rate of obstacle avoidance and barrier crossing, and expanding the application scope of laser sensors.
Implementation Method 1
line laser emitters responsible for emitting line lasers
Implementation Method 2
the first camera is used to collect a first environmental image detected by the line laser during its emission, and the second camera is used to collect a second environmental image within its field of view. The first environmental image is a laser image containing laser stripes generated when the line laser encounters an object
Data Source
AI summary
The application provides a structured light module and an autonomous mobile device. The structured light module includes a first camera and line laser emitters for collecting a first environmental image containing laser stripes generated when the line laser encounters an object. The structured light module can also capture a visible light image through a second environmental image that does not contain laser stripes. Both the first and second environmental images can help to detect more accurate and richer environmental information, expanding the application range of laser sensors.