LIDAR Window Cover Moisture Removal via Far-Infrared Heating
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Solution Overview
Problem
Conventional LIDAR apparatuses with hot wire moisture removing units degrade light emission and reception efficiency due to the coverage of a predetermined region of the window cover, limiting their effectiveness in adverse weather conditions.
Innovation Solution
A LIDAR apparatus utilizing a far-infrared light source for a moisture removing unit that adjusts its heating intensity and angle based on the state of the window cover, ensuring efficient moisture removal without covering the window, thereby enhancing light emission and reception efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hot wire moisture removing unit is installed in the window cover, then moisture removal capability is improved, but light emission efficiency and light receiving efficiency are degraded
Solution Approach 1:
The patent replaces the mechanical hot wire heating system with an infrared light-based heating system. The infrared light source emits infrared rays that directly heat the window cover surface without requiring physical contact or mechanical heating elements, thereby eliminating the need for hot wires that would block light paths while maintaining effective moisture removal capability
Solution Approach 2:
The patent introduces infrared light as an intermediary energy carrier between the power source and the window cover. Instead of using direct electrical heating through hot wires, the system uses infrared radiation as a mediator to transfer thermal energy to the window cover, enabling moisture removal without physical obstruction of the optical path
2Reliability
If the entire region of the window cover is heated to remove moisture, then moisture removal effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent implements localized heating by controlling the infrared light source to heat only specific regions of the window cover where moisture is detected, rather than heating the entire surface. The control unit adjusts the irradiation position and intensity based on moisture distribution, applying heating selectively to affected areas to minimize energy consumption while maintaining effective moisture removal
Solution Approach 2:
The patent applies partial heating action by targeting only the necessary portions of the window cover that require moisture removal. Instead of uniformly heating the entire window cover surface, the system applies infrared radiation selectively to regions with moisture accumulation, using just enough heating energy to address the actual problem 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 solution effectively removes moisture from the window cover, improving light emission and reception efficiency while maintaining a wider sensing range, even in conditions with rain or snow, by dynamically adjusting the far-infrared light source's intensity and angle.
Implementation Method 1
a moisture removing unit configured to emit far-infrared light using a far-infrared light source to heat the window cover unit through the angle adjusting unit
Implementation Method 2
heat the window cover unit through the angle adjusting unit
Implementation Method 3
an angle adjusting unit configured to adjust an emission angle of the laser light emitted from the light emitting unit by reflecting the laser light
Data Source
AI summary
A LIDAR (Light Detection and Ranging) apparatus for a vehicle including a light emitting unit configured to emit laser light; an angle adjusting unit configured to adjust an emission angle of the laser light emitted from the light emitting unit by reflecting the laser light; a window cover unit installed to discharge the laser light emitted through the angle adjusting unit to the outside of the vehicle; a light receiving unit configured to receive reflected light introduced into the vehicle through the window cover unit; and a moisture removing unit configured to emit far-infrared light using a far-infrared light source to heat the window cover unit through the angle adjusting unit.