Method of streaming industrial telemetry data from an industrial site with congestion control and payload size optimisation

A method of streaming industrial telemetry data elements from an industrial site to a remote server, the method comprising:

• receiving a stream of industrial telemetry data elements from a multitude of industrial devices operating on the industrial site;
• storing each received industrial telemetry data element in a data elements queue;
• periodically extracting a number N of data elements from the data elements queue and aggregating the extracted N data elements into one data frame, such that the size of the resulting data frame does not exceed a maximum frame size;
• storing each resulting data frame in a data frames buffer;
• and
• periodically extracting a data frame from the data frames buffer and sending the extracted data frame to the remote server,
• wherein a data element is removed from the data elements queue and stored in a collecting database as an excess data element if the time the data element has spent in the data elements queue exceeds a maximum queuing time,
• wherein a data frame is stored in the collecting database as an excess data frame instead of being stored in the data frames buffer if the data frames buffer is full,
• wherein the maximum queuing time is optimised in real time as a function of:
• the latest number of data elements removed from the data elements queue;
• and
• the frequency at which the data frames buffer is full, and
• wherein the number N of data elements extracted is optimised in real time in view of the size of the latest resulting data frame and of the number of data elements aggregated into this data frame, while respecting said maximum frame size.