Abstract: The present disclosure provides a communication method and system implemented based on recognized data, and a gas-volume conversion controller. The method includes: obtaining an instantaneous value and a data archive; obtaining a historical data increment value data set by using a preset data increment model; sorting historical data increment values in the historical data increment value data set; storing an obtained data increment value sequence based on a preset time interval; generating recognized data from the historical data increment values based on a preset sorting sequence, an increment value data value, and a preset symmetric encryption algorithm model; and obtaining the recognized data, and parsing the recognized data to obtain a parsing result. Data is sorted by using a digital matrix and an increment. In this way, the data is effectively compressed, thereby reducing a data amount, and improving communication efficiency. A device user can perform self-service processing.