DATA COLLECTION METHOD, APPARATUS, AND SYSTEM

The present invention relates to a data collection method and apparatus, a data collector, and a data collection system. The data collection method in the present invention is applied to a collector that communicates with a master station by using the Distribution Line Message Specification DLMS protocol, and includes: obtaining, by the collector, a collected-data item identifier from the master station, where the collected-data item identifier indicates a collected data item that needs to be reported to the master station in an event reporting manner; obtaining, by the collector from a smart meter, to-be-reported data corresponding to the collected-data item identifier; generating, by the collector, a DLMS extension event packet, where the DLMS extension event packet includes a data attribute item and the to-be-reported data, and the data attribute item is used to identify a type of the to-be-reported data; and sending, by the collector, the DLMS extension event packet to the master station. According to the present invention, message exchange between the master station and the collector and occupied resources can be reduced, and data collection performance can be improved.