Abstract: A micro-magnetic detecting method includes the steps of: detecting a magnetic induction intensity along a first direction on a surface of a detected object to generate a detection signal, determining whether an amplitude of the detection signal is an anomalous value at a first position of the surface of the detected object, wherein the anomalous value is a value which is inconsistent with a linear value of the detection signal at the first position, and the linear value is a value that satisfies a linear relationship of the detection signal, and determining there is a defect at the first position of the detected object in case that the amplitude of the detection signal is the anomalous value. Accordingly, it detects the magnetic induction intensity on the surface of the detected object so as to detect its surface and internal defects when it remains in its original status.

Abstract: A method for detecting the defect of the pipe includes the steps of: detecting a first parameter related to a magnetic induction intensity along a length direction of the pipe; determining whether the first parameter exceeds a predetermined threshold; determining a position at which the first parameter exceeds the predetermined threshold as the position of the defect of the pipe; and determining a degree of the defect of the pipe based on a numerical value of the first parameter exceeding the predetermined threshold. Through the detecting device, the defect in the pipe is decided based on parameters related to the magnetic induction intensity, the position of the defect of the pipe is determined according to a position at which the parameters are abnormal, and the degree of the defect of the pipe is determined according to numerical values of the parameters which are abnormal.

Abstract: A method for detecting the defect of the pipe includes the steps of: detecting a first parameter related to a magnetic induction intensity along a length direction of the pipe; determining whether the first parameter exceeds a predetermined threshold; determining a position at which the first parameter exceeds the predetermined threshold as the position of the defect of the pipe; and determining a degree of the defect of the pipe based on a numerical value of the first parameter exceeding the predetermined threshold. Through the detecting device, the defect in the pipe is decided based on parameters related to the magnetic induction intensity, the position of the defect of the pipe is determined according to a position at which the parameters are abnormal, and the degree of the defect of the pipe is determined according to numerical values of the parameters which are abnormal.

Abstract: A micro-magnetic detecting method includes the steps of: detecting a magnetic induction intensity along a first direction on a surface of a detected object to generate a detection signal, determining whether an amplitude of the detection signal is an anomalous value at a first position of the surface of the detected object, wherein the anomalous value is a value which is inconsistent with a linear value of the detection signal at the first position, and the linear value is a value that satisfies a linear relationship of the detection signal, and determining there is a defect at the first position of the detected object in case that the amplitude of the detection signal is the anomalous value. Accordingly, it detects the magnetic induction intensity on the surface of the detected object so as to detect its surface and internal defects when it remains in its original status.