Surface acoustic wave gas measurement method and device with discharge gap energy capture function

The invention relates to a surface acoustic wave gas measurement method and device with a discharge gap energy capture function. The method comprises the following steps: A, a surface acoustic wave gas sensor with a sound input interdigital electrode and a sound output interdigital electrode; collecting a discharge signal generated by the tested power equipment through a discharge energy capture coil, applying a coupling potential to an input interdigital electrode, generating a pulse voltage, and generating a surface acoustic wave signal; b, acoustic-electric conversion is carried out on the generated surface acoustic wave signal on an output interdigital electrode, so that the surface acoustic wave signal is transmitted to a wireless receiver through a transmitting antenna; and C, the wireless receiver performs Fourier transform on the received electric signal to obtain the basic frequency of the surface acoustic wave gas sensor, calculates the frequency difference between the basic frequency and the refere