Device for measuring regional settlement based on fiber bragg grating strain sensor

The utility model provides a device for measuring regional subsidence based on a fiber bragg grating strain sensor, and belongs to the technical field of land subsidence and measurement thereof. The utility model provides a device for measuring regional settlement based on a fiber bragg grating strain sensor, which comprises a base and a shell covered above the base, the shell is provided with an inner cavity for storing water, the upper end of the shell is provided with an air guide hole, the air guide hole is used for communicating the inner cavity of the shell with the outside, the base is provided with a strain sensor, and the strain sensor is arranged on the base. The strain sensor is connected with a strain optical fiber, a first temperature sensor is installed on the inner side of the shell, the first temperature sensor is connected with a first temperature optical fiber, and the shell is further provided with a water injection port and a water drainage port. The device for measuring the regional settl