Sensitization type soil pressure sensor based on gear rack and fiber bragg grating

The utility model provides a sensitization type soil pressure sensor based on a gear rack and a fiber bragg grating, which belongs to the technical field of soil pressure detection sensors and comprises a shell, a gear cam assembly, a rotating rod gear assembly, a second rack and an elastic beam. A first diaphragm is arranged on the upper side of the shell, and a first rack connected to the lower end face of the first diaphragm is arranged in the shell. The gear cam assembly comprises a first gear and a cam; the rotating rod gear assembly comprises a rotating rod and a second gear; the second rack is in meshing transmission with the second gear; the elastic beam is fixedly arranged in the shell, the second rack makes vertical contact with the side face of the elastic beam, and a fiber bragg grating used for sensing deformation of the elastic beam is attached to the elastic beam. According to the sensitization type soil pressure sensor provided by the utility model, through mechanical combination of the gear,