By analyzing the advantages and disadvantages of temperature measurement in coal mine underground cables, the superiority of distributed optical fiber sensing was summarized, and then the distributed optical fiber sensing coal mine underground temperature measurement system was built, which consisted of laser, WDM wavelength division multiplexer, APD photodetector, sensor (multimode fiber), data acquisition card and other hardware. The software used wavelet denoising method to further optimize the signal data, with the lab view program for waveform verification.Finally, it was confirmed by experiments that the system design scheme was feasible and achieved the intended purpose.
李计川,张自雷. 一种基于分布式光纤传感的煤矿井下测温系统研究[J]. 煤炭与化工, 2020, 43(1): 63-66.
Li Jichuan, Zhang Zilei. Study on coal mine temperature measurement system based on distributed optical fiber sensing. CCI, 2020, 43(1): 63-66.