Lidar Cover Window Heating and Damage Detection
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Solution Overview
Problem
LIDAR apparatuses face performance deterioration due to moisture or frost on the cover window, which can lead to damage and affect the transmission and reception of laser light, and existing solutions do not effectively prevent these issues or detect damage in real-time.
Innovation Solution
A LIDAR apparatus equipped with a transparent heating film covering the cover window to prevent moisture and frost formation, and a resistor unit with a matrix structure to detect damage by monitoring resistance changes, allowing for immediate action to protect the optical system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cover window is used to protect the optical system, then protection from external environment is improved, but moisture or frost can form on the cover window causing performance deterioration
Solution Approach 1:
A heating unit is disposed on the cover window to preemptively heat and prevent moisture or frost from forming on the cover window before it can interfere with laser light transmission. This preliminary thermal action eliminates the harmful condensation that would otherwise occur in cold environments.
Solution Approach 2:
The temperature parameter of the cover window is actively controlled by the heating unit to maintain it above the dew point, preventing phase changes of moisture that would cause frost or condensation. By changing the thermal state of the cover window, the harmful effects are eliminated.
2Adaptability or versatility
If the LIDAR apparatus operates in harsh environments, then versatility is improved, but damage to the cover window may occur
Solution Approach 1:
A detection unit monitors the state of the cover window and provides feedback to determine whether the cover window is damaged. This feedback mechanism allows the system to detect damage early and take appropriate actions to protect the optical system from further harm.
Solution Approach 2:
The detection unit is positioned to monitor the cover window before significant damage can occur, allowing the system to prepare protective measures in advance. By detecting early signs of damage, the system can prevent catastrophic failure of the optical components.
3Reliability
If a heating unit is added to prevent moisture and frost, then prevention of performance deterioration is improved, but device complexity increases
Solution Approach 1:
The heating unit is integrated directly onto the cover window structure, merging the protective heating function with the existing cover window component. This integration reduces the need for separate, complex heating assemblies and simplifies the overall device architecture.
Solution Approach 2:
The cover window serves multiple functions: it protects the optical system from the environment, transmits laser light, and now also serves as a substrate for the heating unit that prevents moisture and frost. By making the cover window multi-functional, additional complexity is avoided.
4Reliability
If a detection unit is added to detect cover window damage, then reliability of optical system protection is improved, but device complexity increases
Solution Approach 1:
The detection unit is integrated into the overall LIDAR apparatus structure, merging the damage detection function with the existing system components. This integration allows damage monitoring without requiring a completely separate, complex detection subsystem.
Solution Approach 2:
The detection unit enables the LIDAR apparatus to self-monitor its own structural integrity. By detecting cover window damage automatically, the system performs self-diagnosis without requiring external inspection, simplifying the overall protection mechanism.
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
Effectively prevents moisture and frost from forming on the cover window, ensuring continuous performance and quickly detects damage to the cover window, enabling timely protection of the optical system.
Implementation Method 1
a heating unit which covers a surface of the cover window and is disposed at the same
Implementation Method 2
a resistor unit which is disposed to cover the other surface of the cover window; and a detection unit for detecting whether the cover window is damaged by detecting a change in resistance of the resistor unit
Data Source
AI summary
A LIDAR apparatus is disclosed. A LIDAR apparatus according to an embodiment of the present invention comprises a cover window which covers a transmission path and reception path of laser light and is disposed in the same, and comprises a heating unit which covers a surface of the cover window and is disposed at the same, and a heating control unit connected to the heating unit to control the same.