Rotating speed signal conversion device and rotating speed signal conversion and measurement method

The invention relates to the technical field of generator equipment, in particular to a rotating speed signal conversion device and a rotating speed signal conversion and measurement method, the signal conversion device comprises a shell and a signal converter arranged in the shell; the signal converter comprises a power supply module and a signal conversion module which are arranged on the circuit mainboard; the power supply module is connected with the signal conversion module for supplying power to the signal conversion module; the signal conversion module is used for converting an input signal; the signal converter can convert and output a voltage or current rotating speed signal output by a generator controller system into a corresponding N-frequency-doubled high-precision rotating speed pulse signal; and then the high-precision rotating speed pulse signal is transmitted to a wind driven generator monitoring and diagnosis system, so that high-precision rotating speed measurement value acquisition and rot