A kind of method and apparatus common electric energy meter being transformed into intelligent electric meter

A kind of method and apparatus common electric energy meter being transformed into intelligent electric meter

  • CN 102,279,312 B
  • Filed: 07/06/2011
  • Issued: 04/06/2016
  • Est. Priority Date: 07/06/2011
  • Status: Active Grant
First Claim
Patent Images

1. common electric energy meter is transformed into the device of intelligent electric meter by one kind, comprise:

  • probe (4) and acquisition terminal (2), described probe (4) connects described acquisition terminal (2), and fixes, aims at the electric energy image of electric energy window for induction electric energy table of described electric energy meter;

    Described acquisition terminal (2) from described probe (4) read described electric energy image calculate electric energy increment Delta or the identification table truth of a matter according to Ws, calculate electric energy increment, display and according to pre-payment control overhead, intercom mutually with external digital equipment (3), acquisition terminal (2) comprises single-chip microcomputer MPU (22), crystal oscillator (23), resets and watchdog circuit (24), and wherein the oscillator signal that produces of crystal oscillator (23) provides frequency of operation for single-chip microcomputer MPU;

    Reset and watchdog circuit (24) are input to single-chip microcomputer MPU and produce electrification reset and the operation monitoring MPU;

    It is characterized in that;

    described electric energy meter is mechanical electric energy meter, described probe (4) comprises to the radiative luminotron of machine carousel (41) of described mechanical electric energy meter, the first sensitizing tube (42) be disposed in order along the direction that machine carousel rotates forward and the second sensitizing tube (43), first sensitizing tube (42) and the second sensitizing tube (43) receive the reflected light that described utilizing emitted light is reflected by described machine carousel respectively, and the power supply V+ that described luminotron (41) is exported by acquisition terminal (2) powers;

    Described probe (4) also comprises shell (44), glass plate (45) and wiring board (46);

    Grounded emitter, the collector of described first sensitizing tube (42) export pulse M1;

    Grounded emitter, the collector of described second sensitizing tube (43) export pulse M2;

    Wiring board (46) is for fixing luminotron (41), the first sensitizing tube (42) and the second sensitizing tube (43) and realizing circuit wiring, and shell (44), glass plate (45) are for the encapsulation of (4) of popping one'"'"'s head in;

    Probe (4) is aimed at the machine carousel of electric energy meter and is bonded directly on the window glass of described electric energy meter;

    Described first sensitizing tube (42) and described second sensitizing tube (43) export pulse M1 and pulse M2 respectively according to the power of reflected light, described acquisition terminal (2) judges power direction according to the relation of the advanced or delayed pulse M2 of pulse M1, when electric energy meter is by forward power, pulse M1 is ahead of pulse M2;

    Otherwise, when electric energy meter lags behind pulse M2 by pulse M1 during negative sense power;

    Electric energy increment Delta=1/C, wherein, C is constant of electric energy meter;

    Electric energy increment Delta is accumulated at the bottom of forward and reverse table, at the bottom of timesharing table and at the bottom of ladder table according to described power direction by described acquisition terminal (2).

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