Laser Sensor Assembly with Bent Rotary Shaft for 3D Scanning
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Solution Overview
Problem
Conventional laser sensor assemblies using pitching motions suffer from blind spots and limited scan ranges, leading to incomplete object scanning and increased energy requirements due to vibrations and resonance.
Innovation Solution
A laser sensor assembly that moves three-dimensionally, utilizing a rotary shaft unit with bent portions and a guiding unit to adjust angles based on moving speed, allowing the laser sensor to perform curvilinear motions and reduce blind spots, while maintaining a simple structure and reducing vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a general pitching motion is performed to set observation ranges in various directions, then the scan area covers a certain area, but blind spots are created and the laser sensor cannot scan the blind spots
Solution Approach 1:
The patent transitions from a single-axis pitching motion to a two-axis rotary shaft unit configuration. The first rotary member provides pitching motion while the second rotary member provides yaw motion, creating three-dimensional scanning capability that eliminates blind spots by adding a rotational dimension to the observation coverage.
Solution Approach 2:
The scanning function is divided into two independent rotary members: the first rotary member handles vertical pitching motion and the second rotary member handles horizontal yaw motion. This segmentation allows each component to focus on a specific motion axis, collectively achieving complete 360-degree coverage without blind spots.
2Adaptability or versatility
If a laser sensor assembly performs pitching motion to scan objects, then observation ranges are set in various directions, but vibrations and resonance occur increasing energy requirements
Solution Approach 1:
The patent employs dynamic motion control through the coordinated operation of two rotary members. By distributing the scanning motion across two axes and controlling their rotational speeds independently, the system achieves versatile observation ranges while minimizing vibrations and resonance through balanced dynamic operation.
3Area of stationary object
If a laser sensor assembly uses a bent rotary shaft unit to move three-dimensionally, then blind spots are reduced and scan range is enhanced, but the structure becomes more complex
Solution Approach 1:
The patent combines two rotary members with different rotational axes into a single integrated rotary shaft unit. The first rotary member and second rotary member are coupled together such that the laser sensor unit is positioned at an angle relative to the first rotary member's axis, creating a compact three-dimensional scanning structure that achieves enhanced scan range without excessive complexity.
Data Source
AI summary
Provided is a laser sensor assembly and a method of controlling the laser sensor assembly. A laser sensor assembly includes a supporting unit; a rotary shaft unit formed onto the supporting unit, wherein the rotary shaft unit is rotatable, and has at least one bent portion to form a certain angle with respect to a rotational axis of the rotary shaft unit; and a laser sensor unit coupled with the bent part of the rotary shaft unit to form a certain angle with respect to the rotational axis of the rotary shaft unit.