Coiled tubing wall thickness detection method and system based on wireless transmission

The invention provides a coiled tubing wall thickness detection method and system based on wireless transmission, and the method comprises the steps: detecting the wall thickness of a pipeline through eight groups of differential eddy current detection probes, and obtaining the detection information of the wall thickness of the pipeline; meanwhile, a photoelectric encoder is in contact with the outer wall of the coiled tubing to obtain moving distance information of the coiled tubing; the pipeline wall thickness detection information and the moving distance information are transmitted; the pipeline wall thickness detection information and the moving distance information are analyzed and processed, and then a pipeline plane two-dimensional image is generated through an algorithm; and identifying and positioning the abnormal position of the wall thickness of the pipeline according to the two-dimensional plane image of the pipeline. The device can realize lossless, wireless and continuous detection and real-time