SYSTEM AND METHOD FOR FIRMWARE UPDATE OF METER, WATT HOUR METER WITH FUNCTION OF REMOTE FIRMWARE UPDATE

摘要

According to the present disclosure, an energy meter installed at each energy consumer receives in advance a new firmware from a remote server, and updates its own firmware at a future time. The energy meter may receive update time information designating a future time when downloading the firmware, or may execute the update in response to update execution instruction from the remote server once the firmware is downloaded. The firmware update may be executed for each module unit. Communication traffic can be dispersed because the download is given to each energy meter in advance before a time firmware or firmware module update is to be executed. A large load is prevented from being loaded to the remote server at once. It is easy to manage or control a plurality of energy meters because the update can be executed in a lump.