ELECTRONIC ELECTRICITY METER WITH INTEGRATED DIGITAL-CERTIFICATION MECHANISM FOR SECURE COMMUNICATION

摘要

Electronic electricity meter with integrated digital-certification mechanism for secure communication, comprising current sensors 1(a), voltage sensors (b), electronic circuit (c) for conditioning the current signals and voltage signals in the electrical levels required by the processing unit (d), processing unit (d) able to continuously sample the current signals and voltage signals provided by the circuit (c) and that reflect, using a known ratio, the real value of the current and voltage delivered to the meter connection terminals, the processing unit (d) calculates the active and passive through energy and determines the energy values to be counted, and a communication unit (e), linked to the processing unit (d), which uses a digital data protocol and a physical interface to communicate with the world outside the meter, and a processing unit with digital certification functions (f) located between the processing unit (d) and the communication unit , in which the processing unit with digital verification functions (UPFCD) is intended to encrypt and sign all of the data made available, using the data protocol of the communication unit , to the outside world, such that the electronic relationship with the meter in terms of data communication is governed by the use of the digital certification technique natively and non-separable.

主权项

1. Electric energy measuring device with an integrated digital-certification mechanism for safe communication, characterized in that it comprises:
current sensors 1(a), voltage sensors (b) electronic circuit (e) for conditioning current and voltage signals at the electrical levels required by the processing unit (d), processing unit (d), capable of performing continuous sampling of current and voltage signals, provided by said circuit (c) and reflecting—based on a known relation—the real value of the current and voltage delivered at the connecting terminals of said measuring device, the processing unit (d) accomplishing the passing active and reactive energy calculation, determining the energy values to be counted and a communication unit (e) associated to the processing unit (d), which, based on a digital data protocol and a physical interface, relates with the outer world to the measuring device, and processing unit (f) of digital certification functions, which is integrated between said processing unit (d) and said communication unit (e), wherein said processing unit of digital verification functions (UPFCD) has as its function to accomplish the cryptography and signature of all data made available by means of the data protocol of the communication unit (e) to the outer world, in such a way that the electronic relationship with the measuring device, concerning data communication, will be ruled by the use of digital certification technique in a native and non-separable fashion.