Patent ID: 9570944
Date: 2017-02-14
CPC Classifications: G01D,H02J,Y02B,Y02E,Y04S

Claim:
1. A power consumption measurement and control apparatus comprising: a power input line; a power output line; a sensing interface; a power consumption measurement and control unit, comprising a logic switch connected to the power input line and the power output line, wherein the power consumption measurement and control unit further measures a power consumption amount flowing out the power output line; a processing unit, being electrically connected to the sensing interface and the power consumption measurement and control unit; and a storage unit, being stored with a user list and a power consumption recording table, wherein a user number and a user identification list is recorded in the user list, wherein the processing unit transmits a first control signal to the power consumption measurement and control unit and the logic switch is turned on in response to the first control signal when the logic switch is off and the processing unit receives a first identification signal from the sensing interface, wherein the processing unit transmits a second control signal to the power consumption measurement and control unit and the logic switch is turned off in response to the second control signal when the logic switch is on and one of the following conditions happens: (a) the processing unit receives a second identification signal from the sensing interface and (b) the processing unit determines that the power consumption amount is below a predetermined threshold over a predetermined time interval, wherein the processing unit further receives a plurality of identification signals from the sensing interface, wherein for each of the identification signals: (c) the processing unit further compares an identification code carried by the identification signal with the user identification list after the processing unit receives the identification signal from the sensing interface, (d) when the identification code is not included in the user identification list, the processing unit writes the identification code into the user identification list and increases the user number by one, and (e) when the identification code is included in the user identification list, the processing unit removes the identification code from the user identification list and decreases the user number by one.