Compressed sensing-based Brillouin Frequency Domain Distributed Optical Fiber Sensor Device

A compressed sensing-based Brillouin frequency domain distributed optical fiber sensor device comprising:

• a sensing optical fiber installed in a measurement target region;
• a light source unit configured to output light;
• a probe light generation unit configured to generate probe light using the light output from the light source unit and to transmit the probe light through one end of the sensing optical fiber;
• a compressed sensing light generation unit configured to generate compressed sensing light having a complex signal waveform, in which a plurality of different frequency signals are compressed, using the light output from the light source unit;
• an optical circulator configured to receive the compressed sensing light through an input terminal, to transmit the same to an output terminal connected to the other end of the sensing optical fiber, and to output, to a detection terminal, light scattered in the sensing optical fiber and incident through the output terminal;
• a light detection unit configured to detect Brillouin scattered light generated in the sensing optical fiber and received through the detection terminal;
• a compressed sensing signal generation unit configured to generate a compressed sensing signal corresponding to the compressed sensing light so that the compressed sensing light is generated;
• and
• a signal processing unit configured to control the compressed sensing signal generation unit and to calculate a temperature or strain for each position of the sensing optical fiber from a signal output from the light detection unit.