LiDAR Horizontal Component Layout for Lower Wind Resistance
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Solution Overview
Problem
Existing LiDAR systems have a large volume in the height direction due to the stacking of the transceiver module, light deflection scanning element, and window mirror assembly, which increases wind resistance and size, posing challenges for autonomous driving devices.
Innovation Solution
The transceiver module, light deflection scanning element, and window mirror assembly are arranged in directions perpendicular to the height direction, reducing the thickness and volume of the LiDAR, utilizing a MEMS galvanometer for compactness and incorporating a modular design with a main control circuit board groove and thermal conductive adhesive for improved performance and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the transceiver module, light deflection scanning element, and window mirror assembly are stacked along the height direction, then the optical path alignment is simplified, but the LiDAR volume and height increase, leading to larger wind resistance
Solution Approach 1:
The patent transitions from a vertical stacking arrangement (height direction) to a horizontal distribution arrangement (length direction). The transceiver module, light deflection scanning element, and window mirror assembly are distributed along the length direction of the housing rather than stacked in the height direction, thereby reducing LiDAR height and volume while maintaining optical path functionality through redesigned light transmission paths
2Ease of manufacture
If the transceiver module, light deflection scanning element, and window mirror assembly are stacked along the height direction, then the structural assembly is simplified, but the wind resistance of the autonomous driving device increases
Solution Approach 1:
The patent redistributes the optical components along the length direction of the housing instead of stacking them in the height direction. This dimensional change reduces the height profile of the LiDAR, thereby reducing wind resistance and aerodynamic drag on the autonomous driving device, while the housing structure integrates these components through side-wall mountings and internal light paths
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
This configuration reduces the size and wind resistance of the LiDAR, enhances detection accuracy and efficiency, and extends the service life of components, while facilitating easier assembly and maintenance.
Implementation Method 1
the transceiver module is configured to generate an emitted laser beam
Implementation Method 2
the light deflection scanning element is configured to deflect the emitted laser beam toward the window mirror assembly, receive and deflect the reflected laser beam returned from a measured area
Implementation Method 3
the window mirror assembly is configured to transmit the emitted laser beam and the reflected laser beam
Implementation Method 4
incorporating a modular design with a main control circuit board groove and thermal conductive adhesive for improved performance and longevity
Data Source
AI summary
Embodiments of the present application disclose a LiDAR and an autonomous driving device. The LiDAR includes a housing, a light deflection scanning element, a transceiver module, and a window mirror assembly. The transceiver module and the light deflection scanning element are both arranged in the housing; the transceiver module is configured to generate an emitted laser beam and receive a reflected laser beam; the light deflection scanning element is configured to deflect the emitted laser beam toward the window mirror assembly, and receive and deflect the reflected laser beam; the window mirror assembly is configured to transmit the emitted laser beam and the reflected laser beam; the light deflection scanning element and the transceiver module are arranged along a first direction; and the light deflection scanning element and the window mirror assembly are arranged along a second direction, thereby reducing its wind resistance.