Helical Light Scanning for Single-Unit 3D LIDAR Detection
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Solution Overview
Problem
Multilayer-type LIDAR systems are costly due to the need for multiple light transmitters/receivers for each layer, making it impractical for obtaining three-dimensional surroundings information.
Innovation Solution
A light control device with a single transmitter/receiver unit that controls light emission in two directions to create a helical transition locus, enabling three-dimensional object detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a multilayer-type LIDAR is used to obtain three-dimensional information on surroundings, then the detection capability is improved, but the cost increases significantly due to needing a light transmitter/receiver for each layer
Solution Approach 1:
A single light transmitter/receiver unit performs multiple functions by sequentially scanning different vertical layers through helical motion control, eliminating the need for separate transmitters/receivers for each layer while maintaining three-dimensional detection capability
Solution Approach 2:
The light beam is dynamically controlled to move in a helical pattern, continuously changing its emission angle in the vertical direction while rotating in the horizontal direction, allowing a single transmitter to cover multiple spatial layers that would otherwise require multiple fixed transmitters
2Measurement precision
If a multilayer-type LIDAR is used to obtain three-dimensional information, then the detection capability is improved, but the system complexity increases due to multiple transmitters/receivers
Solution Approach 1:
One light transmitter/receiver unit is designed to perform the work of multiple units by implementing helical scanning control, reducing system complexity while preserving the ability to detect objects across multiple vertical layers
Solution Approach 2:
The system adds temporal dimension to the scanning process by sequentially activating the single transmitter at different vertical angles, creating a helical scan pattern that covers three-dimensional space without requiring parallel multiple transmitters
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 three-dimensional object detection using a single transmitter/receiver, reducing costs and complexity compared to multilayer systems.
Implementation Method 1
a light transmission/reception unit installed in a movable body and including an emission unit configured to emit a light and a light receiving unit configured to receive the light reflected by an object around the movable body
Data Source
AI summary
The light control device is installed in a movable body, and comprises a light transmission/reception unit including an emission unit and a light receiving unit. The emission unit emits a light, and the light receiving unit receives the light reflected by an object around the movable body. The control unit controls the emission unit to continuously shift the light emitted by the emission unit in a first direction and a second direction crossing the first direction such that a transition locus of the light emitted by the emission unit becomes helical.