Data collection method, apparatus, and system

A data collector for communicating with a master station by using the Distribution Line Message Specification (DLMS) protocol, the data collector comprising:

• a processor and a memory storing processor-executable instructions, the processor being configured to execute the processor-executable instructions to facilitate performance of the following:
• obtaining a collected-data item identifier from the master station, wherein the collected-data item identifier indicates a collected data item that is to be reported to the master station;
• obtaining from a smart meter, to-be-reported data corresponding to the collected-data item identifier;
• generating a DLMS extension event packet, wherein the DLMS extension event packet comprises a data attribute item and the to-be-reported data, and the data attribute item is for identifying a type of the to-be-reported data;
• and
• sending the DLMS extension event packet to the master station;
• wherein the processor is further configured to execute the processor-executable instructions to facilitate:
• actively establishing a connection to the master station when sending the DLMS extension event packet to the master station.

A system comprising:

• a data collector;
• and
• a master station;
• wherein the data collector and the master station are configured to communicate by using the Distribution Line Message Specification (DLMS) protocol;
• wherein the data collector is configured to:
• obtain a collected-data item identifier from the master station, wherein the collected-data item identifier indicates a collected data item that is to be reported to the master station;
• obtain, from a smart meter, to-be-reported data corresponding to the collected-data item identifier;
• generate a DLMS extension event packet, wherein the DLMS extension event packet comprises a data attribute item and the to-be-reported data, and the data attribute item is for identifying a type of the to-be-reported data;
• and
• send the DLMS extension event packet to the master station;
• wherein the data collector is further configured to actively establish a connection to the master station when sending the DLMS extension event packet to the master station.