PCCP broken wire multichannel electromagnetic detection system and method

The invention provides a PCCP broken wire multichannel electromagnetic detection system and method, and the system comprises an industrial control computer which is used for installing detection software and controlling the whole detection process; the transmitter is used for generating an alternating current signal and driving the excitation probe to generate a primary field electromagnetic signal; the excitation probe is used for generating a primary field electromagnetic signal; the detection probe group is used for responding to a secondary field electromagnetic signal induced by the primary field electromagnetic signal through the pipe wall of the PCCP and the prestressed steel wire and generating a voltage signal; the multi-channel receiver is used for carrying out digital processing on the received voltage signal and generating a digital signal; and the orthogonal incremental encoder is used for generating orthogonal pulse signals and obtaining displacement data according to pulse signal counting. Acco