Power and signal transmission method for interior of railway locomotive

The invention discloses a power and signal transmission method for the interior of a railway locomotive. The method comprises the following steps of S1, laying a power cable and a signal cable at preset positions, so as to enable a first adsorption part and a second adsorption part to be aligned with each other and attached together; S2, centering and clamping the power cable and the signal cable through a first fixing block and a second fixing block, and fixedly connecting the first fixing block and the second fixing block through bolts and hanging lugs; and S3, connecting a first coil in the first adsorption part with a wire in a power wire core to provide current for the first coil, and connecting a second coil in the second adsorption part with a wire in a signal wire core to provide current for the second coil. The power cable and the signal cable form a new structure through a connecting piece, a traditional cable structure is changed, the magnetic field generated by the electromagnetic coil arranged in