Laser Radar Vertical Field of View Adjustment
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Solution Overview
Problem
Existing multi-beam laser radars are structurally complex, difficult to assemble, and suffer from poor stability, leading to inefficient energy utilization due to fixed detection ranges and uniform angular resolution.
Innovation Solution
A laser radar system with a single laser, a single detector, and coaxial transceiver structures that include a vertical field of view adjustment unit, allowing for non-uniform distribution of laser beams and adjustable detection ranges and resolutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple laser detectors are used for multi-beam scanning, then measurement accuracy is improved, but device complexity increases and stability deteriorates
Solution Approach 1:
The patent segments the scanning function into horizontal and vertical components, using a single laser combined with a rotating mirror for horizontal scanning and a vibrating mirror for vertical scanning. This segmentation allows one laser to perform multi-beam scanning without requiring multiple laser detectors, thus improving measurement accuracy while reducing device complexity
Solution Approach 2:
The single laser system is designed to perform multiple functions: it can scan horizontally through rotation and vertically through vibration, effectively replacing multiple dedicated laser detectors. The transceiver structure integrates multiple functions (beam emission, scanning, and detection) into a unified system, reducing overall device complexity while maintaining measurement precision
2Area of stationary object
If multiple laser emitters with uniform output are used, then detection coverage is improved, but energy utilization efficiency deteriorates due to fixed detection range and uniform angular resolution
Solution Approach 1:
The patent introduces dynamic adjustment capabilities through the vertical field of view adjustment unit, which can change the vertical scanning angle and beam distribution in real-time. This dynamic adjustment allows the system to optimize energy distribution across different detection zones, concentrating energy where needed and reducing waste in less critical areas, thereby improving energy utilization efficiency while maintaining comprehensive detection coverage
Solution Approach 2:
The vertical field of view adjustment unit enables different regions of the detection field to have different beam densities and scanning parameters. By adjusting the vertical scanning angle and beam distribution locally, the system can allocate laser energy more efficiently - using higher beam density in critical detection zones and lower density in peripheral zones, thus improving overall energy utilization while maintaining adequate coverage
3Measurement precision
If uniform angular resolution is used across all detection zones, then detection consistency is improved, but energy waste occurs at the edges where high resolution is unnecessary
Solution Approach 1:
The patent implements non-uniform beam distribution through the vertical field of view adjustment unit, which can concentrate laser beams in central detection zones where high angular resolution is critical and reduce beam density in peripheral zones where lower resolution is acceptable. This local differentiation of beam quality allows the system to maintain detection consistency in critical areas while significantly reducing laser energy waste at the edges
Solution Approach 2:
The system dynamically changes scanning parameters (vertical field of view angle, beam distribution density) based on detection requirements. By adjusting these parameters, the system can achieve high angular resolution in central zones where it is needed while using lower resolution in peripheral zones, thereby maintaining detection consistency where critical while minimizing laser energy waste in less critical areas
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 is simpler to assemble and maintain, with improved stability and energy utilization by allowing flexible adjustment of the vertical field of view and resolution, optimizing detection performance.
Implementation Method 1
A laser: used for emitting a laser beam
Implementation Method 2
measuring how long it takes the laser beam to return after encountering the target
Implementation Method 3
receiving the reflected laser beam
Implementation Method 4
transceiver structures... receiving said laser beams emitted in the preset direction and transmitting said laser beams to the detector
Implementation Method 5
transceiver structures... distributing said laser beams non-uniformly in the vertical field of view
Data Source
AI summary
A laser radar, comprising: a laser (10): used for emitting a laser light beam; a probe (20): used for receiving the reflected laser light beam; and a set of transceiver structures (30): used for receiving the laser light beam emitted along a preset direction and conveying the laser light beam to the probe (20), the transceiver structures (30) being arranged coaxially with the laser (10), the transceiver structures (30) comprising a vertical field of view adjustment unit, and the vertical field of view adjustment unit making the laser light beam have a non-uniform distribution in the vertical field of view range and/or adjusting the vertical field of view range of the laser.