热电制冷主动温控对双通道非制冷红外sf6检漏系统性能的提升

Puntos clave

• The aim is to enhance the performance stability of a dual-channel infrared detection system for SF6 gas leaks by integrating a thermoelectric cooling module.
• Designed and integrated a thermoelectric cooler (TEC) for active temperature control.
• Optimized TEC layout using experimental measurements and thermal field simulations.
• Developed a closed-loop temperature control system based on a PID algorithm.
• Achieved a 40.87% reduction in steady-state gray standard deviation.
• Decreased linear error from 7.2534% to 0.6604%.
• Improved noise equivalent temperature difference (NETD) from 14.379 mK to 11.597 mK, indicating a 19.35% performance enhancement.
• In SF6 gas detection, average relative contrast, signal-to-noise ratio, and gas pixel proportion increased by 123%, 56%, and 77% respectively.