Optical fiber electric arc optical detection device with self-checking function and detection method thereof

The invention discloses an optical fiber electric arc optical detection device with a self-checking function. The device comprises an arc light probe, an optical fiber and a photoelectric conversion unit, wherein the arc light probe is connected with the photoelectric conversion unit through the optical fiber; and a fluorescent material is arranged between the optical window end of the arc light probe and the optical fiber. The invention also discloses an optical fiber electric arc optical detection method for the optical fiber electric arc optical detection device with the self-checking function. According to the optical fiber electric arc optical detection device with the self-checking function and the detection method thereof designed by the invention, signal loss and misoperation which can be generated by a conventional point-type optical fiber arc light sensor when the sensor per se fails can be overcome.