Lidar Sensor Magnetic Linear Drive Wear Reduction
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Solution Overview
Problem
Existing LIDAR sensors face challenges in achieving robust, low-wear, and efficient movement mechanisms for detecting objects within a sampling space, particularly in applications like motor vehicles, where compact size and high reliability are crucial.
Innovation Solution
A LIDAR sensor design incorporating a magnetic channel and a movable component controlled by a linear drive system, utilizing magnetic fields to enable movement without material contact, allowing for continuous motion and various types of movement such as translation and rotation, with a magnetic bearing and electromagnets or permanent magnets for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional mechanical drive system is used for moving the sampling component, then the structure is simple and easy to manufacture, but the system suffers from wear, high friction, and reduced reliability
Solution Approach 1:
The patent replaces traditional mechanical drive systems with a magnetic field-based linear drive system. Electromagnets mounted on the guide element interact with magnets on the movable component to produce contactless actuation, eliminating mechanical wear and friction while maintaining driving capability.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the drive system and the movable component. The magnetic field serves as the transmission medium for force, allowing the movable component to be actuated without direct mechanical contact with the guide element.
2Reliability
If a contact-based mechanical bearing is used, then the structure is simple, but material contact causes wear and requires frequent maintenance
Solution Approach 1:
The patent replaces traditional contact-based mechanical bearings with a magnetic bearing system. The magnetic field provides support and guidance forces without material contact, eliminating wear while maintaining the bearing function of supporting and positioning the movable component.
3Volume of moving object
If a compact LIDAR sensor design is implemented, then the installation volume is reduced, but the movement mechanism becomes more constrained and complex
Solution Approach 1:
The patent segments the LIDAR sensor into modular components: a guide element with mounted electromagnets, a separate movable component with magnets, and a magnetic channel. This modular segmentation allows for compact integration while maintaining functional independence and simplifying the overall design.
4Use of energy by moving object
If traditional mechanical actuators are used, then the system is robust, but friction and contact forces increase energy consumption
Solution Approach 1:
The patent replaces friction-based mechanical actuators with a magnetic field-based linear drive system. The contactless magnetic actuation eliminates friction losses, significantly reducing energy consumption while maintaining mechanical robustness through the magnetic field's inherent stability and control capabilities.
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 solution provides a mechanically robust, low-wear, and high-fatigue-strength sampling unit with reduced installation volume, enabling efficient sampling and precise optical path design, while minimizing electrical power consumption and maintaining high reproducibility and visual field coverage.
Implementation Method 1
The guide element includes magnets for this purpose, and a magnetic field of the guide element can form. The movable component also includes magnets, and a magnetic field of the movable component can form.
Implementation Method 2
A magnet of the guide element can be implemented as an electromagnet. The movement of the movable component can be achieved by supplying the electromagnets with current having the appropriate polarity.
Implementation Method 3
the guide element is designed as a magnetic bearing. A magnetic bearing has magnetic forces that can allow a bearing and/or movement without material contact.
Implementation Method 4
The magnetic fields of the guide element and of the movable component can be combined in such a way that the movable component is pulled for a distance along a movement direction. The movable component can be repelled from the instantaneous position and attracted by the next position.
Data Source
AI summary
A LIDAR sensor for detecting an object within a sampling space, includes a sampling unit that includes a magnetic channel, a guide element, and a movable component that is situated within the magnetic channel and is movable along the guide element under control of a control method that uses a linear drive.