Sensor assembly

By introducing contaminant traps and cleaning components into the LiDAR sensor assembly, the optical performance degradation caused by contaminant transfer is solved, achieving higher accuracy and longer equipment life.

CN119716904APending Publication Date: 2025-03-28GM GLOBAL TECHNOLOGY OPERATIONS LLC
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Patent Information

Application Number
CN202311595199.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-09-28
Filing Date
2023-11-27
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In existing LiDAR sensor components, contaminants such as lubricant steam are transmitted from the bearing to the transmitter and receiver, resulting in reduced optical performance and equipment contamination.

Method used

A sensor assembly including a rotatable mount, a transmitter and a receiver, a motor, a bearing and a contaminant trap is designed. The pollutant trap is composed of adsorbent material, extending around the shaft, traps the lubricant vapor released from the bearing, and cleans the window through the cleaning member to prevent the transfer of contaminants.

Benefits of technology

It effectively limits the transmission of pollutants from bearings to transmitters and receivers, improves the accuracy and stability of light detection and ranging, and extends the service life of the equipment.

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Abstract

A sensor assembly comprising: a rotatable mount; a transmitter component and a receiver component supported by the rotatable mount so as to rotate together with the rotatable mount; a motor configured to rotate the rotatable mount by rotating a shaft connected to the rotatable mount; a bearing configured to support the shaft; and a contaminant trap between the bearing and each of the transmitter component and the receiver component, the contaminant trap configured to trap contaminants to limit transfer of the contaminants from the bearing to the transmitter component and the receiver component.
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