Transmission system error detection and correction system and method

摘要

One embodiment describes a method for real time error correction in a data transmission system that includes receiving a first communication signal on a first programmable logic device from a second programmable logic device via a first serial link, receiving a second communication signal on the first programmable logic device from the second programmable logic device via a second serial link, in which the first serial link and the second serial link are disposed in parallel with each other and are configured to communicate over a single conduit, and the first communication signal and the second communication signal are representative of identical information. The method further includes comparing the first communication signal and the second communication signal in the first programmable logic device to detect an error in data in the first communication signal, the second communication signal, or both, and when the error is detected, correcting the error in real time in the first programmable logic device based at least in part on the comparison of the first communication signal and the second communication signal.

主权项

1. An industrial control system configured to be communicatively coupled to one or more devices, wherein the industrial control system comprises a data transmission subsystem comprising:
a first serial port configured to be communicatively coupled to a first serial link, wherein the first serial port is configured to receive a first transmission signal comprising a first plurality of bits via the first serial link; a second serial port configured to be communicatively coupled to a second serial link, wherein the second serial port is configured to receive a second transmission signal comprising a second plurality of bits via the second serial link, wherein the first serial link and the second serial link are disposed in parallel with each other and the first transmission signal and the second transmission signal are representative of identical information; and circuitry configured to:
perform a first comparison between the first plurality of bits and the second plurality of bits;determine whether an error is present in the first transmission signal and type of the error when present based at least in part on the first comparison; andcorrect the error in real time by adjusting the first plurality of bits based at least in part on the type of the error to enable the industrial control system to control operation of the one or more devices based at least in part on the first plurality of bits.