Leakage point locating system of optical fiber sensing natural gas pipeline leakage monitoring system
A technology for natural gas pipelines and monitoring systems, applied in the field of leak point location systems, can solve the problems of being easily affected by environmental factors, high false alarm rate, low sensitivity, etc.
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[0039] The present invention will be further described with reference to the drawings and embodiments, but the protection scope of the present invention should not be limited by this.
[0040] Example. The composition of this example is as figure 1 As shown, an optical fiber sensor is installed at a certain distance on the pipe body. Each optical fiber sensor is connected to the transmission optical path through an optical path adapter, and the transmission optical path is connected to a light source and a photodetector; the output of the photodetector includes leakage signal identification and event location functions The signal acquisition and processing module, the output of the signal acquisition and processing module is connected to the microcomputer through an external interface. After processing by the signal acquisition and processing module, the sensor based on frequency division multiplexing realizes the demultiplexing and demodulation of each sensor signal to obtain the...
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