High-speed rail roadbed state monitoring method and device based on self-energy-taking RFID and DCNN

According to the high-speed rail roadbed state monitoring method and device based on the self-energy-taking RFID and the DCNN, non-contact information transmission is carried out through the RFID, the reading speed is high, meanwhile, the anti-interference capacity is high, the arrangement defect that an RFID sensor of a lithium battery is frequently replaced can be avoided through piezoelectric type vibration energy taking, the RFID tag is buried in the key position of the roadbed, and the monitoring accuracy is high. An RFID reader-writer on a mobile device or an inspection vehicle is used for data acquisition, DCNN is used for automatically learning and extracting features from original data, features are extracted layer by layer from low level to high level through multi-layer convolution and pooling operation, a Swsh activation function is introduced to optimize a convolution layer, and the feature extraction efficiency is improved. A hierarchical feature representation mode enables the model to capture