The invention relates to the technical field of
Internet of Things electric power communication, and discloses a remote
software upgrading method and
system based on an HPLC high-speed power line carrier network. The remote
software upgrading method is applied to
software upgrading equipment, and specifically comprises the following steps that S101, a master control node of software to be upgraded is obtained, the master control node completes
encryption of an upgrading instruction packet through HPLC network
broadcasting, if the master control node is in an offline state, a response is triggered through a wake-up pulse
signal synchronized with a power line
power frequency period, and if the master control node is not in the offline state, the software to be upgraded is upgraded; and it is ensured that the whole network nodes complete instruction synchronization within the preset time. Omnibearing upgrading and optimization are achieved through three core technologies of dynamic fragmentation transmission,
millisecond-level service continuity guarantee and resource limit
adaptation, the
packet loss rate of a high-
noise environment is compressed to 0.1% based on a
signal-to-
noise ratio self-adaptive fragmentation strategy (128KB-512KB), the average
transmission time is reduced to 17.4 minutes from 30 minutes in combination with a multi-path concurrent transmission and
breakpoint resume protocol, and the transmission efficiency is improved. And 300ms whole-network instruction synchronization is realized with the assistance of a
power frequency synchronization wake-up mechanism.