Hardware version identification method and system based on frequency signal

The invention discloses a frequency signal-based hardware version identification method and system. The method comprises the following steps of enabling a hardware circuit to output an initial frequency signal; outputting a hardware model meeting the initial frequency signal according to a preset hardware model matching table; when a single hardware model is output, hardware version information is directly output; and when a plurality of hardware models are output, performing frequency multiplication or/and frequency division on the initial frequency signal by using a frequency multiplier or/and a frequency divider according to a multiple coefficient to obtain an adjustment frequency signal set so as to adjust the frequency signal set and a preset truth table to output a truth value, and outputting the hardware models according to a truth value output result, and outputting hardware version information according to the initial frequency signal and a preset frequency and version matching table of the hardware