Ocean double-diaphragm fiber bragg grating pressure sensor for throwing type probe

The utility model relates to the technical field of pressure sensors, in particular to an ocean double-diaphragm fiber grating pressure sensor for a throwing type probe, which comprises a shell, and a first accommodating cavity for accommodating a pressure measuring grating and a second accommodating cavity for accommodating a temperature compensation grating are respectively arranged at two ends of the shell. A third containing cavity allowing liquid to enter is formed in the middle of the shell, a pressure measuring elastic membrane is arranged between the third containing cavity and the first containing cavity, a temperature measuring elastic membrane is arranged between the third containing cavity and the second containing cavity, and the sensor can compensate the influence of temperature on the pressure measuring grating in real time through measuring parameters of the pressure measuring grating and the temperature compensation grating. According to the ocean double-diaphragm fiber grating pressure senso