POWER MANAGEMENT DEVICE AND POWER MANAGEMENT SYSTEM USING THE SAME

PROBLEM TO BE SOLVED: To provide a power management device which reduces a user's troublesomeness caused by repeating a same notification in a short period, and a power management system using the same.SOLUTION: A flag management unit 6 stores flag status which indicates whether to permit a notification operation associated with power utilization. A notification determination unit 3a compares consumed power information acquired from a power supply by a power utilization information acquisition unit 2 with notification criterion set in a criterion management part 5. For example, when the consumed power from the power supply falls below a prescribed determination value, the notification determination unit 3a retrieves the flag stored in the flag management unit 6. If the flag is OFF, a display device 40 performs the prescribed notification operation. If the flag is ON, a display device 40 does not perform the prescribed notification operation. A flag determination unit 3b resets the flag status stored in the flag management unit 6 to OFF when the consumed power from the power supply exceeds a prescribed reset value. After resetting the flag status, if the notification operation is performed at least once, the flag status is changed to ON.