Abstract: The present invention relates to a method and a device of identifying and locating a PCCP broken wire signal, the device comprises a distributed optical cable adheres on a pipe, a high frequency subsystem connected with two cores of the cable, a low frequency subsystem connected with the third core of the cable, and a control system which is connect to the two subsystems, the device is configured to analyze abnormal vibration signal compared with the database of the broken wire signal database and determine whether a broken wire event occurs. In addition, it is also configured to analyze low frequency abnormal vibration signals through two neighbor channels to locate the wire breakage. The present invention can identify and locate the broken wire event with high accuracy.

Abstract: The present invention relates to a method and a device of identifying and locating a PCCP broken wire signal, the device comprises a distributed optical cable adheres on a pipe, a high frequency subsystem connected with two cores of the cable, a low frequency subsystem connected with the third core of the cable, and a control system which is connect to the two subsystems, the device is configured to analyze abnormal vibration signal compared with the database of the broken wire signal database and determine whether a broken wire event occurs. In addition, it is also configured to analyze low frequency abnormal vibration signals through two neighbor channels to locate the wire breakage. The present invention can identify and locate the broken wire event with high accuracy.

Abstract: A device and method for detecting wire breakage are provided. The wire breakage detection device includes an excitation coil, a detection coil, and a processor. The detection signal input end of the processor is connected to the detection coil. The excitation coil and the detection coil are located on two sides of a longitudinal section of an inner wall of a to-be-detected pipeline respectively, wherein a conductive closed structure is formed continuously and annularly in the to-be-detected pipeline, the axis of the excitation coil is parallel to the axis of the to-be-detected pipeline, and the axis of the detection coil is perpendicular to the axis of the to-be-detected pipeline. The excitation coil is configured to generate an alternating magnetic field according to an alternating electromagnetic signal, wherein an induced current and an electromagnetic field of the induced current are generated by the to-be-detected pipeline located in the alternating magnetic field.

Abstract: A device and method for detecting wire breakage are provided. The wire breakage detection device includes an excitation coil, a detection coil, and a processor. The detection signal input end of the processor is connected to the detection coil. The excitation coil and the detection coil are located on two sides of a longitudinal section of an inner wall of a to-be-detected pipeline respectively, wherein a conductive closed structure is formed continuously and annularly in the to-be-detected pipeline, the axis of the excitation coil is parallel to the axis of the to-be-detected pipeline, and the axis of the detection coil is perpendicular to the axis of the to-be-detected pipeline. The excitation coil is configured to generate an alternating magnetic field according to an alternating electromagnetic signal, wherein an induced current and an electromagnetic field of the induced current are generated by the to-be-detected pipeline located in the alternating magnetic field.