Method for online upgrading of multiple modules of security control platform

The invention discloses a security control platform multi-module online upgrading method, which comprises a request stage, a downloading stage, a downloading completion stage, a verification stage and an updating stage, and realizes sequential upgrading, and after a first firmware is upgraded, a second firmware can be continuously upgraded without selecting a new firmware. The firmware of the same type is updated at the same time, the time required for upgrading is shortened to a great extent, and the overall upgrading time can be greatly shortened by upgrading the firmware of the multiple modules at the same time; compared with upgrading each module one by one, simultaneous upgrading can complete more updating operations in the same time period, the overall efficiency of the system is improved, and the interruption time in the upgrading process can be shortened by simultaneously upgrading the firmware of a plurality of modules, which means that the system can recover to the normal state more quickly during t