| 摘要 |
A system for prepayment and control of an electrical energy supply comprises a contactless prepayment intelligent card chargeable with a prepayment credit amount of energy purchased by a user from an energy utilities provider; and an electronic electricity meter. The electronic electricity meter comprises: an energy measurement module that registers the electrical energy consumed by a user of the meter; a microcontroller for controlling the operation of the energy measurement module; a memory for storing information including information generated in the measurement module regarding the energy consumed by the user during the life of the meter and meter tampering information; a signal transmission/reception element; and a contactless prepayment intelligent card reader-writer. The electricity meter is configured to transmit a signal so as to detect the presence of the contactless prepayment intelligent card inside a detection field of the meter; to transmit and receive signals so as to interchange information between the electronic meter and the contactless prepayment intelligent card; to authenticate the prepayment intelligent card and the internal contactless intelligent card reader-writer, in mutual form; to determine if the contactless prepayment intelligent card has a prepayment credit greater than zero; and to discharge and store in the memory an amount of prepaid energy from the prepayment intelligent card. The contactless prepayment intelligent card is operable to receive and record information from the electricity meter about the state of the meter, wherein the information comprises the energy consumed by the user during the life of the meter, the credit of the meter, and information relating to meter tampering such as the number of disconnections, interruptions, derivations, and energy accumulated during the use of derivations and inversions. |
