Forest fire multi-defense-line real-time monitoring system based on distributed optical fiber sensing technology
A real-time monitoring system and distributed optical fiber technology are applied in forest fire alarms, signal transmission systems, and non-electrical signal transmission systems. Improved monitoring effect and high safety effect
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Embodiment 1
[0041] see Figure 1-Figure 3 As shown, the present embodiment provides a forest fire multi-defense real-time monitoring system based on distributed optical fiber sensing technology, including an optical fiber temperature monitoring unit 100, a weight dynamic sensing unit 200 and a fire early warning unit 300;
[0042] The optical fiber temperature monitoring unit 100 is used to monitor the temperature of the forest using optical fiber sensing distributed;
[0043] Wherein, the optical fiber temperature monitoring unit 100 adopts an optical fiber temperature detector, and there are multiple optical fiber temperature detectors, and the multiple optical fiber temperature detectors are distributed and installed in the forest.
[0044] Specifically, the fiber optic temperature detector includes a collimating lens, a diffraction grating and an arrayed silicon photodetector. First, the optical fiber is placed at the focus of the collimating lens in the detector, and the light coming...
Embodiment 2
[0080] Considering that when the ambient temperature monitored by the optical fiber temperature monitoring unit 100 is greater than the temperature threshold, the output fire signal cannot be transmitted to the fire early warning unit 300 in time due to the interference of external factors, resulting in the staff being unable to receive fire information in time. Therefore, in order to improve the fire signal The intensity of transmission, the difference between this embodiment and embodiment 1 is, wherein:
[0081] The fire warning unit 300 also includes a signal enhancement module, which is used to increase the strength of the fire signal transmitted to the fire warning unit 300 .
[0082] Specifically, the signal enhancement module adopts a wavelet domain signal enhancement algorithm, including the following steps:
[0083] First of all, according to the nature of the fire signal, various mathematical methods are used in the wavelet domain to process the wavelet coefficients...
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