Abstract: Provided in the present disclosure are a nickel-plated carbon fiber film, a manufacturing method of the nickel-plated carbon fiber film, a shielding structure and a preparation method of the shielding structure. The nickel-plated carbon fiber film comprises: at least one carbon fiber base fabric, metal colloid particles adhering to a surface of the carbon fiber base fabric; at least one nickel metal layer, which is provided on a surface of the carbon fiber base fabric and a surface of the metal colloid particles that is far from the carbon fiber base fabric.

Abstract: A method, device and system for controlling a fuel cell and a rail vehicle are provided. The method includes: an operating power of a target object is detected, wherein the target object is powered by at least two fuel cells (S102); when it is detected that the operating power of the target object is lower than a predetermined power, at least one fuel cell is turned off or a cell component in any one or more fuel cells is turned off according to a gas conversion range corresponding to the fuel cell (S104), wherein the gas conversion range is an output power range value, of the fuel cell, corresponding to a preset range value of a hydrogen conversion rate of the fuel cell.

Abstract: A method and a device for transmitting signals among compartments of a train are provided. The method comprises: receiving a first signal transmitted via a jumper cable, and extracting first data carried in the first signal; receiving a second signal transmitted wirelessly corresponding to the first signal, and extracting second data carried in the second signal; and determining whether the first data is identical with the second data, and outputting the first signal in a case that it is determined that the first data is identical with the second data, or outputting the second signal in a case that it is determined that the first data is not identical with the second data. The method and the device improve the reliability of transmission of signals among compartments of a train.

Abstract: A method and a device for transmitting signals among compartments of a train are provided. The method comprises: S1, receiving a first signal transmitted via a jumper cable, and extracting first data carried in the first signal; S2, receiving a second signal transmitted wirelessly corresponding to the first signal, and extracting second data carried in the second signal; and S3, determining whether the first data is identical with the second data, and outputting the first signal in a case that it is determined that the first data is identical with the second data, or outputting the second signal in a case that it is determined that the first data is not identical with the second data. The method and the device improve the reliability of transmission of signals among compartments of a train.