Lidar Sensor Assembly Tilt Mechanism for Scan Plane Generation
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Solution Overview
Problem
Current lidar sensors in motor vehicle technology are expensive and complex, limiting their ability to efficiently create a large number of scan planes, often restricting them to only four scan planes due to their design and high complexity.
Innovation Solution
A lidar sensor design featuring a transmitting and receiving unit assembly that can pivot and tilt horizontally, with an adjusting device allowing for vertical tilting, enabling the creation of multiple scan planes by adjusting the angle of light signals relative to the ground surface, thereby increasing the number of scan planes without increasing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transmitting units are provided with different vertical angles to create multiple scan planes, then the number of scan planes is increased, but the device complexity and cost increase significantly
Solution Approach 1:
The patent combines multiple transmitting units and receiving units into a single assembly that can be tilted together as one unit. This assembly is mounted on a tilting mechanism that pivots the entire group, allowing multiple scan planes to be achieved by tilting the assembly to different angles rather than using separate transmitting units for each scan plane
Solution Approach 2:
The patent introduces a tilting mechanism that dynamically adjusts the vertical angle of the transmitting and receiving unit assembly. This allows the system to switch between different scan planes by changing the tilt angle, replacing the static multi-unit approach with a dynamic single-assembly approach
2Area of stationary object
If a rotating mirror is used to deflect light beams 360° horizontally, then the scan coverage is improved, but the device complexity and cost increase
Solution Approach 1:
The patent extracts the horizontal scanning function from the vertical tilt mechanism by providing multiple transmitting units within the assembly that are oriented at different horizontal angles. This allows horizontal scan coverage to be achieved without requiring a rotating mirror, as each transmitting unit covers a specific horizontal sector
Solution Approach 2:
The patent segments the horizontal scanning function into multiple transmitting units, each responsible for a specific horizontal angle range. This segmentation allows the system to achieve 360° horizontal coverage through coordinated operation of multiple fixed-angle transmitters rather than a single rotating mirror
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 design allows for a greater number of scan planes to be realized with a robust and simple structure, balancing the number of transmitting units and angle positions to optimize measuring time and resolution, while maintaining precision and reducing the need for multiple adjusting devices.
Implementation Method 1
a plurality of transmission units are provided, wherein their light beam is deflected 360° in a horizontal direction by a rotating mirror
Implementation Method 2
the transmitting unit and the receiving unit are designed as an assembly. The lidar sensor has an adjusting device that is designed so that the assembly can be tilted by at least one angle in a vertical direction
Data Source
AI summary
The invention relates to a lidar sensor (1) comprising at least one transmitting unit (S1-S4) and at least one receiving unit (E1-E4), wherein the transmitting unit (S1-S4) is designed to pivot a light signal in a horizontal direction, wherein the light signal is tilted at an angle α relative to a ground surface (5), wherein the transmitting unit (S1-S4) and the receiving unit (E1-E4) are designed as an assembly (2) and the lidar sensor (1) has an adjusting device (2) that is designed so that the assembly (2) can be tilted by at least one angle β in a vertical direction, and a method for optically scanning an environment by means of a lidar sensor (1).