Distributed fiber sensing disturbance event detection method and apparatus
A distributed optical fiber, event detection technology, applied in measurement devices, measurement of ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problem of large false alarm rate of the system, achieve high detection probability, solve the problem of large false alarm rate of the system, reduce The effect of false positive rate
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Embodiment 1
[0024] Such as figure 1 As shown, the present invention provides a method for detecting a disturbance event in a distributed optical fiber sensing pipeline, the method comprising:
[0025] Step 110: Preprocessing the acquired optical fiber sensing signal to obtain the first signal;
[0026] Further, the preprocessing of the acquired optical fiber sensing signal specifically includes: filtering the acquired optical fiber sensing signal for noise reduction.
[0027] Specifically, the distributed optical fiber sensor obtains the optical fiber sensing signal. The distributed optical fiber sensor is a sensor that uses a unique distributed optical fiber detection technology to measure or monitor the spatial distribution and time-varying information along the optical fiber transmission path. It arranges the sensing fiber along the field, and can obtain the spatial distribution and time-varying information of the measured field at the same time, which is attractive for many industria...
Embodiment 2
[0046] Such as figure 2 As shown, the present invention provides a distributed optical fiber sensing pipeline disturbance event detection device, said device comprising:
[0047] pipeline 102;
[0048] Specifically, the pipeline 102 is used for transporting liquid, gas or loose solid. Such as oil pipelines, natural gas pipelines and other pipelines. Such as figure 2 As shown, the embodiment of the present application takes the pipeline laid below the ground surface 104 as an example for explanation, but the present application is not limited to laying the pipeline below the ground surface 104 , and can also be laid above the ground surface 104 .
[0049] Distributed optical fibers, the distributed optical fibers 106 are laid in parallel along the pipeline 102;
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