Views: 0 Author: Site Editor Publish Time: 2025-05-29 Origin: Site
Whether the internal camera module of the industrial pipeline inspection endoscope needs to be equipped with an infrared LED lamp should be determined through a comprehensive assessment based on the inspection scenario requirements and the characteristics of infrared technology. One can make an appropriate choice based on the following analysis.
I. Technical Advantages of Infrared LEDs
Enhancement of defect sensitivity
Infrared light (850nm/940nm) has a better ability to identify defects such as metal surface cracks and weld seam pores than white light. It can enhance image contrast and accurately capture minute damages as small as 0.1mm.
On surfaces covered with oil stains or rust, infrared light can penetrate the surface contaminants and reveal hidden structural defects.
Adaptability to complex environments
Infrared LEDs do not require visible light assistance and can achieve effective imaging in completely dark pipelines, smoke-filled environments, or areas where liquids are submerged;
The 940nm wavelength infrared light has a weak flare effect, making it suitable for scenarios requiring concealed detection (such as explosion-proof areas).
Multimodal detection compatibility
When used in combination with white light LEDs, dual detection modes can be achieved through light source switching. For example, white light can be used for routine visual inspections, while infrared light can be used for in-depth defect analysis;
Combined with the thermal imaging module, the function of monitoring the temperature distribution of pipelines can be expanded, and local overheating or leakage risks can be predicted.
II. Limitations of Infrared LEDs equipped in the device
Increase in cost and complexity
The infrared module requires a dedicated CMOS sensor (such as InGaAs material), and the hardware cost is 30% to 50% higher than that of the ordinary white light module;
The system needs to integrate multi-spectral image processing algorithms, and the difficulty of software adaptation and maintenance has increased.
Specific scenario applicability restrictions
Non-metallic pipes (such as PVC and PE) have a high absorption rate for infrared light, which may result in a poorer imaging effect compared to metal pipes;
Suspended particles in liquid media (such as crude oil) will scatter infrared light, reducing the clarity of the imaging.
III. Decision Recommendations for Typical Application Scenarios
1. Oil and gas metal pipelines: Must be equipped with infrared LEDs. It is recommended to use an 850nm wavelength and combine with an anti-oil-stain coating lens to enhance the defect detection capability.
2. Chemical reaction pipelines: It is recommended to use a white light + infrared mixed light source, supporting dual-mode switching, to meet the detection requirements for corrosive media.
3. Municipal plastic drainage pipes: Infrared LEDs can be an optional component. It is recommended to use a 940nm wavelength to reduce scattering interference and combine with an AI image enhancement algorithm to optimize imaging.
4. High-temperature steam pipelines: Must be equipped with a high-temperature-resistant infrared LED probe (able to withstand above 80℃) and integrated with thermal imaging functionality to monitor temperature anomalies.
IV. Industry Technology Trends
Intelligent Upgrade: The new generation module automatically matches the best light source mode through AI algorithms. For example, it automatically switches to infrared mode when detecting rust layers;
Modular Design: Detachable infrared LED components reduce maintenance costs and are suitable for different pipe diameter detection requirements;
Multi-spectral Fusion: Combine infrared and ultraviolet light detection to simultaneously identify mechanical damage and chemical corrosion.
In summary, when installing infrared LEDs, one must consider both the detection accuracy requirements and the cost budget. It is recommended that in high-risk and high-value pipeline inspection scenarios, a hybrid light source system should be prioritized.
