Inclination-Compensated Single-Layer LIDAR for Accurate 3D Scanning

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Solution Overview

Problem

Multilayer-type LIDAR systems are costly and face difficulties in accurately detecting objects when mounted on inclined movable bodies due to variations in laser light direction.

Innovation Solution

A light control device equipped with an emission unit, a light receiving unit, and a controller that acquires inclination information to adjust the emission direction of the light, allowing for three-dimensional information acquisition using a single transmitter/receiver, even when the movable body is inclined.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a multilayer-type LIDAR is used to acquire three-dimensional information, then the detection capability is improved, but the device cost increases significantly

Engineering Contradiction:

Improvethree-dimensional detection capabilityVSAvoiddevice cost

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies a single-layer LIDAR system that performs multiple functions: it acquires three-dimensional information and compensates for inclination effects using the same transmitter/receiver unit. The controller enables this single device to function as both a standard LIDAR and an inclination-compensating system, eliminating the need for separate multilayer hardware.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent changes the operational parameters of the LIDAR system by dynamically adjusting the emission direction based on detected inclination angles. By modifying the emission direction parameter in response to inclination changes, the system maintains accurate three-dimensional detection capability without requiring additional hardware layers.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If the movable body is inclined, then the emission direction of the laser light varies, but this causes difficulty in correctly detecting objects

Engineering Contradiction:

Improveoperation on inclined surfacesVSAvoidobject detection accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent implements a feedback mechanism where the inclination detection unit continuously monitors the inclination angle of the movable body, and the controller uses this information to adjust the emission direction in real-time. This closed-loop feedback system ensures that object detection accuracy is maintained despite changes in the movable body's inclination.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent makes the emission direction dynamic by continuously adjusting it based on the detected inclination angle. Instead of a fixed emission direction, the system adapts the emission direction dynamically to compensate for inclination changes, ensuring accurate object detection under varying operational conditions.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11016290B2Light control device, light control method and program

Publication Date: 2021.05.25 PIONEER IP

AI summary

The light control device emits a light from the emission unit, and receives the light reflected by an object by the light receiving unit. The acquisition unit acquires inclination information related to an inclination of the movable body, and the controller controls an emission direction of the light emitted by the emission unit based on the inclination information.