Diamond wire breakage detection method based on magnetic sensing

The invention discloses a diamond wire breakage detection method based on magnetic sensing. The diamond wire breakage detection method comprises the steps that S1, a magnetic sensing device is arranged at the close distance of a diamond wire; s2, self-adaptive sampling is carried out on environment noise of the diamond wire; s3, determining a numerical value fluctuation range of the high-precision three-axis magnetic sensor when the diamond wire normally runs, and obtaining an upper limit threshold value and a lower limit threshold value of data fluctuation; s4, in the working process, three-axis data of the high-precision three-axis magnetic sensor are continuously collected at a certain frequency; s5, performing variance calculation on the three-axis data collected each time in the sliding window to obtain a three-axis actual variance value, comparing whether the three-axis actual variance value exceeds an upper threshold value and a lower threshold value or not, judging whether the three-axis actual varian