Using the delay correlation of the continuity test of the enameled wire paint film, how to select the adaptive delay filter order according to the actual enameled wire sampling rate and the line speed in the adaptive time delay detection process. After the data of the enameled wire collected by the two-way infrared pair tube is amplified, simplified and filtered, the adaptive delay calculation is performed, in the calculation process, the appropriate adaptive filter order is selected, and the delay point can be effectively calculated. The simulation proves that th...