Structured light module and autonomous mobile device

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Solution Overview

Problem

Existing laser sensors are unable to meet the application requirements for obstacle recognition and avoidance, necessitating the development of new structured light modules for enhanced detection accuracy and expanded application scenarios.

Innovation Solution

A structured light module comprising a camera module and line laser emitters distributed on both sides of the camera module, which emits line laser outward and collects environmental images to detect front environmental information with high accuracy, allowing for three-dimensional reconstruction and precise positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If line laser emitters are arranged on two sides of the camera module, then detection accuracy is improved, but device complexity increases

Engineering Contradiction:
Improvedetection accuracyVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The laser sensing system is segmented into multiple line laser emitters positioned at different locations (two sides of the camera module). Each emitter independently contributes to the three-dimensional reconstruction, allowing the system to achieve high detection accuracy through distributed sensing rather than a single complex sensor.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent combines multiple sensing functions (line laser emission and camera imaging) into an integrated structured light module. The line laser emitters and camera module work together as a unified system, merging the advantages of laser precision with optical imaging to achieve accurate environmental mapping without requiring separate independent systems.

Inventive Principle:
Principle #5Merging (Combining)

2Volume of moving object

If line laser emitters and camera module are integrated in a compact arrangement, then space efficiency is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improvemodule sizeVSAvoidassembly precision
Core Design Contradiction:
Volume of moving objectVSManufacturing precision

Solution Approach 1:

The structured light module employs a nested arrangement where line laser emitters are positioned on two sides of the camera module within a compact housing. This nested configuration allows multiple functional components to occupy minimal space while maintaining their relative positions, achieving high space efficiency without excessive manufacturing complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

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

The structured light module provides improved detection accuracy and space efficiency, enabling precise environmental mapping and obstacle recognition, thus expanding the application range of laser sensors in autonomous mobile devices.

Implementation Method 1

line laser emitters distributed on two sides of the camera module. The line laser emitters are responsible for emitting line laser outwards

Methodology Applied
Scientific EffectLaser: Laser

Implementation Method 2

The camera module is responsible for collecting an environmental image detected by the line laser

Methodology Applied
Scientific EffectLight detection: Photoelectric Effect

Data Source

PatentUS20220369890A1Structured light module and autonomous mobile device
Publication Date: 2022.11.24 ECOVACS ROBOTICS CO LTD
  • US20220369890A1 patent drawing
  • US20220369890A1 patent drawing
  • US20220369890A1 patent drawing

AI summary

Provided are a structured light module and an autonomous mobile device. A structured light module comprises a camera module and line laser emitters distributed on two sides of the camera module; the line laser emitters emit line laser outwards; and the camera module collects an environmental image detected by the line laser. By virtue of the advantage of high detection accuracy of the line laser, front environmental information may be detected more accurately. In addition, the line laser emitters are located on two sides of the camera module. This mode occupies a small size, may save more space, and is beneficial to expand an application scenario of a line laser sensor.