Lidar Rotor Beam Duplication for Angular Coverage
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Solution Overview
Problem
Conventional LIDAR systems face limitations in achieving high resolution and efficient detection of objects in multiple directions without increasing complexity, cost, or installation space.
Innovation Solution
A LIDAR system with a rotor-mounted multiple transceiver units that emit and receive duplicated laser beams, allowing for enhanced angular coverage and resolution through beam duplication and contactless energy transmission, reducing the need for multiple lasers and electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transceiver units are mounted on a rotor to detect objects in all directions, then angular coverage and detection capability are improved, but device complexity and installation space increase
Solution Approach 1:
Multiple transceiver units are mounted on a common rotor structure, combining multiple detection functions into a single rotating assembly. This merging approach enables 360-degree angular coverage while sharing mechanical support structures, reducing overall system complexity compared to multiple independent stationary units
Solution Approach 2:
The rotor-mounted transceiver units serve multiple functions: they provide omnidirectional detection coverage, enable time-of-flight measurements, and can be rotated to scan different angular ranges. This multi-functionality improves adaptability while avoiding the need for separate specialized systems for each function
2Measurement precision
If beam duplication is implemented to increase resolution, then measurement precision is improved, but device complexity and component requirements increase
Solution Approach 1:
A beam duplication unit creates multiple copies of the laser beam from a single laser source. These duplicated beams are directed at different angles to illuminate multiple resolution planes simultaneously, achieving high measurement precision without requiring multiple separate laser transmitters
Solution Approach 2:
The single laser source serves multiple functions by generating multiple duplicated beams that illuminate different angular ranges and resolution planes. This multi-functional use of one laser component achieves high resolution while avoiding the complexity of multiple independent laser systems
3Reliability
If inductive energy transmission is used for the rotor, then reliability is improved by avoiding sliding contacts, but device complexity increases
Solution Approach 1:
The mechanical sliding contact system for power transmission to the rotating rotor is replaced with an inductive energy transmission system using adjoining coils. This substitution eliminates mechanical wear and vibration issues, significantly improving reliability while the coil-based system integrates seamlessly with the existing rotor structure
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 system achieves improved scalability and resolution with reduced component requirements, enabling cost-effective and efficient detection of objects in a wide angular range, suitable for highly automated vehicles.
Implementation Method 1
The rotor may include an inductive energy transmission unit. An inductive energy transmission takes place with the aid of adjoining coils. The energy transmission may take place in a contactless manner.
Implementation Method 2
Each of the at least two transceiver units includes a transmitting unit including at least one laser for emitting a laser beam into the detection area of the transceiver unit. Each of the at least two transceiver units includes a receiving unit for receiving laser light which was reflected by the object
Implementation Method 3
at least one of the at least two transceiver units includes a beam duplication unit for duplicating the at least one laser beam into at least two duplication beams. A beam fan is formed as a result of the duplication of the at least one laser beam into the at least two duplication beams.
Data Source
AI summary
A LIDAR system for detecting an object. The LIDAR system includes a rotor rotatable about a rotation axis, the rotor including at least two transceiver units, each having a detection area, the detection areas being oriented in different directions. Each of the at least two transceiver units includes a transmitting unit including at least one laser for emitting a laser beam into the detection area of the transceiver unit; and a receiving unit for receiving laser light which was reflected by the object in the detection area of the transceiver unit. At least one of the at least two transceiver units includes at least one beam duplication unit for duplicating the at least one laser beam into at least two duplication beams.