| In nowadays, each country requires higher and higher quality of system device reliability on the business of telecommunications, so the key point of research is how to improve the reliability of device. In my essay, the author provide a 1: N protection technology to solve this problem, which theory is to use a standby board to protect N pieces of active board, if a certain active board have found problems, the protecting one would replace the broken one immediately and work with the same function.Author researches the general 1: N protection technology. A hardware-based fault check method was proposed, optimize the key part such as the technology of data backup, fault recovery and provide the frame of 1: N protection system software design.The 1: N protection system was designed with concept of modularization. It divides into 5 modular which are cross cell modular, protocol process cell modular, working board modular, protection board modular and relay control cell modual, each modular is isolated and easy to actualize. And the active board, standby board could be combined into application cell modular, which may be used in each application board.The 1: N protection system designed in this essay has already realized, it also achieved the figure of exchanging time comply with world standards-50ms, and fulfilled the design requirement. It is good for affection of application and promising for future applications. |