SYSTEM AND METHOD FOR REMOTE FIRMWARE UPDATE OF ENERGY METER, WATTHOUR METER WITH FUNCTION OF REMOTE FIRMWARE UPDATE

摘要

PROBLEM TO BE SOLVED: To efficiently update a number of energy meters by allowing an energy meter to receive novel firmware from a remote server in advance and updating its own firmware at a future time.SOLUTION: An energy meter installed at each energy consumer receives a new firmware in advance 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 also execute the update in response to an update execution instruction from the remote server once the firmware is downloaded. The firmware update may be executed for each module unit.