PROCEDURE AND CIRCUIT FOR REMOTE RESET OF AN INTEGRATED MEASUREMENT CIRCUIT WITHIN A MULTI-PHASE ELECTRIC POWER METER

The signals a, b, c and d are generated in the external microprocessor (MP) and are conducted along an existing bus to a serial peripheral interface (SPI) of the integrated measuring circuit (MC). The fourth signal d is twice activated and deactivated. The moment of the second deactivation of the fourth signal d is detected. In that moment the active state of the RRR for resetting the integrated measurement circuit (MC) outside its serial peripheral interface (SPI) is triggered. Upon deactivation of the first signal a or second signal b or third signal c, the active state of the RRR resetting signal is disintegrated. By the submitted procedure and circuit the remote reset of the integrated measuring circuit is performed with four non-standard communication signals, which are transmitted to the integrated measurement circuit along a bus, which is already available in electric power meters and is aimed at transmitting four standard communication signals: selection signal, transmission direction signal and signal time-base harmonization of data from the integrated measurement circuits for all phases, a clock signal and a data signal. V zunanjem mikroprocesorju (MP) se generirajo in se na zaporedni periferni vmesnik (SPI) integriranega merilnega vezja (MC) po obstojecem vodilu vodijo signali a, b, c in d. Cetrti signal d se dvakrat aktivira in deaktivira. Detektira se trenutek drugega deaktiviranja cetrtega signala d. Tedaj se vzpostavi aktivno stanje signala RRR za resetiranjeintegriranega merilnega vezja (MC) izven njegovega zaporednega perifernega vmesnika (SPI). Ob deaktiviranju prvega signala a ali drugega signala b ali tretjegasignala c razpade aktivno stanje signala RRR za resetiranje. S predlaganima postopkom in vezjem se daljinsko resetiranje integriranega merilnega vezja izvede s stirimi, za komuniciranje nestandardnimi signali, ki se integriranemu merilnemu vezju dovedejo po vodilu, ki je v stevcu elektricne energije ze prisotno in je predvideno za prenasanje stirih, za komuniciranje standardnih signalov: izbirnega signala, signala za opredelitev smeri prenosa inza casovno uskladitev podatkov iz integriranih merilnih vezijza vse faze, taktnega signala in podatkovnega signala.