Method and device for transmitting signal among compartments of train

A method for transmitting a signal among compartments of a train, comprising:

• A1:
• receiving an original signal transmitted via an on-train signal line;
• A2:
• converting the original signal into a first signal transmitted via a jumper cable and a second signal transmitted wirelessly;
• A3:
• transmitting the first signal via the jumper cable;
• and
• A4:
• transmitting the second signal wirelessly;
• wherein, before the A4, the method further comprises:
• encrypting the second signal, wherein a data packet of the encrypted second signal comprises a physical address of a device for transmitting the second signal;
• wherein a same signal is transmitted several times to confirm a fault of the jumper cable in a case that the fault of the jumper cable is determined.

A device for transmitting a signal among compartments of a train, comprising a processor and a computer readable storage medium storing program codes, wherein the processor performs the stored program codes to:

• receive a first signal transmitted via a jumper cable, and extract first data carried in the first signal;
• receive a second signal transmitted wirelessly corresponding to the first signal, and extract second data carried in the second signal;
• and
• determine that the first data is identical with the second data, determine no fault of the jumper cable and output the first signal;
• or, determine that the first data is not identical with the second data, determine a fault of the jumper cable and output the second signal;
• wherein the processor further performs the stored program codes to:
• receive an encrypted second signal, wherein a data packet in the encrypted second signal comprises a physical address of a device for transmitting the wireless signal;
• determine a decryption password based on preset correspondences between physical addresses and passwords and the physical address of the device for transmitting the wireless signal:
• and
• decrypt the encrypted second signal based on the decryption password;
• wherein a same signal is transmitted several times to confirm the fault of the jumper cable in a case that the fault of the jumper cable is determined.

A device for transmitting a signal among compartments of a train, comprising a processor and a computer readable storage medium storing program codes, wherein the processor performs the stored program codes to:

• receive an original signal transmitted via an on-train signal line;
• convert the original signal into a first signal transmitted via a jumper cable and a second signal transmitted wirelessly;
• transmit the first signal via the jumper cable;
• and
• transmit the second signal wirelessly;
• wherein the processor further-performs the stored program codes to:
• encrypt the second signal, wherein a data packet of the encrypted second signal comprises a physical address of a device for transmitting the second signal;
• wherein a same signal is transmitted several times to confirm a fault of the jumper cable in a case that the fault of the jumper cable is determined.