Research Article
Track Circuits Fault Diagnosis Method Based on the UNet-LSTM Network (ULN)
Table 3
LSTM model parameters of the applied method.
| Name | Filter | Kernel size/stride/padding | Unit | Input size | Output size |
| Downsample | Conv-1 | 4 | 3/2/1 | | 1 × 600 | 4 × 300 | Conv-2 | 8 | 3/2/1 | | 4 × 300 | 8 × 150 | Conv-3 | 16 | 3/2/1 | | 8 × 150 | 16 × 75 | Feature extraction block | Conv-4 | 16 | 3/1/1 | | 8 × 150 | 16 × 150 | Conv-5 | 32 | 5/1/2 | | 16 × 150 | 32 × 150 | Conv-6 | 64 | 7/1/3 | | 32 × 150 | 64 × 150 | Cat | | | | 112 × 150 | 8 × 150 | Upsample | ConvTranspose1d-1 | 8 | 1/1/0 | | 16 × 75 | 8 × 150 | ConvTranspose1d-2 | 4 | 1/1/0 | | 16 × 150 | 4 × 300 | Conv-7 | 1 | 3/8/0 | | 8 × 300 | 1 × 38 | LSTM | LSTM_1 | | | 16 | 1 × 38 | 16 × 38 | FC | | | 7 | 1 × 38 | 1 × 7 |
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