A Distributed Optical Fiber Vibration Sensor System and Its Pattern Recognition Method
A technology of distributed optical fiber and vibration sensor, which is applied in the direction of instruments, measuring devices, and using wave/particle radiation, etc., can solve underfitting, affect system output response time and classification accuracy, hyperparameter modulation, and high cost of update and maintenance and other problems to achieve the effect of real-time monitoring
Active Publication Date: 2022-03-11
郑州信大先进技术研究院
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When the training data is insufficient, it will bring problems such as underfitting. At the same time, the problems of hyperparameter modulation, update and maintenance will also require relatively high costs, which will directly affect the system output response time and classification accuracy.
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[0030] The invention provides a distributed optical fiber vibration sensor system and its pattern recognition method, wherein the system includes a distributed optical fiber vibration sensor, and also includes a feature extraction module and a pattern classification module; the distributed optical fiber vibration sensor is detected and obtained by coherent detection method After the vibration signal f[θ] to be classified at the vibration point, the feature extraction module performs feature extraction on the vibration signal f[θ] to obtain the characteristic parameter data of the intrusion event, and sends the characteristic parameter data to the pattern classification module , by invoking the trained classifier in the database of the pattern classification module to classify the intrusion events, realizing the intelligent pattern recognition of the distributed optical fiber sensor.
[0031] The system of the present invention adopts a coherent detection method to perform signa...
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The invention proposes a distributed optical fiber vibration sensor system and its pattern recognition method, wherein the system includes a distributed optical fiber vibration sensor, and also includes a feature extraction module and a mode classification module; the distributed optical fiber vibration sensor is detected by a coherent detection method to obtain vibration After the vibration signal f[θ] to be classified at the point, the feature extraction module performs feature extraction on the vibration signal f[θ] to obtain the characteristic parameter data of the intrusion event, and after the characteristic parameter data is sent to the pattern classification module, The intelligent pattern recognition of the distributed optical fiber sensor is realized by calling the classifier trained by the pattern recognition method in the database of the pattern classification module to classify the intrusion events.
Description
technical field [0001] The invention relates to the technical field of optical fiber vibration sensors, in particular to a distributed optical fiber vibration sensor system and a pattern recognition method thereof. Background technique [0002] With the continuous development of the optical communication industry in the past few years, related optical devices have also been updated and matured, and the application of optical fibers in the field of communication has advanced by leaps and bounds. At the same time, the application of optical fiber in the field of sensing and detection has gradually developed. The difference from traditional sensors is that optical fiber sensors have the characteristics of anti-electromagnetic interference, safety and energy saving, high sensitivity, small size and easy laying. At the same time, the optical fiber can sense a variety of external information according to the characteristic changes of the backscattered light of the pump pulse light...
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IPC IPC(8): G01H9/00
CPCG01H9/004
Inventor 杨纳川邵佳安新源牛原野袁航
Owner 郑州信大先进技术研究院