Measurement system using fiber Bragg grating sensor

A measurement system using a fiber Bragg grating sensor, the measurement system comprising:

• a sensing unit including a plurality of dynamic sensors and static sensors using fiber Bragg gratings to detect mutually different physical quantities to be measured;
• an optical meter configured to measure each of the physical quantities by simultaneously processing data output from the plurality of dynamic sensors and static sensors in real time;
• and
• a server configured to store and manage the data measured by the optical meter,
• wherein the mutually different physical quantities are measured by simultaneously processing the data output from the plurality of dynamic sensors and static sensors in real time by using the optical meter,
• wherein the plurality of dynamic sensors include an acceleration sensor that generates measurement data at a high speed of more than 100 times per a second and the plurality of dynamic sensors are installed on a first optical cable to output detection signals with mutually different wavelengths,
• wherein the plurality of static sensors include at least one of a displacement sensor, a temperature sensor, an inclinometer, a tunnel convergence sensor, and a geologic inclination sensor that generate measurement data with a measurement period relatively slower than a measurement period of one of the plurality of dynamic sensors, and the plurality of static sensors are installed on a plurality of second optical cables, respectively, to output detection signals with mutually different wavelengths,
• wherein the measurement system further comprises an optical switch selectively connecting the plurality of second optical cables to a second channel of the optical meter, and
• wherein the optical switch continuously and repeatedly performs a switching operation for switching optical paths so as to sequentially connect the plurality of second optical cables to the second channel according to the measurement period of the plurality of static sensors installed on the plurality of second optical cables, respectively.