Global Patent Index - EP 1317673 A1

EP 1317673 A1 2003-06-11 - ANALYTICAL CIRCUIT FOR A CURRENT SENSOR WORKING ON THE COMPENSATION PRINCIPLE, IN PARTICULAR FOR THE MEASUREMENT OF DIRECT AND ALTERNATING CURRENTS AND METHOD FOR OPERATION OF SAID CURRENT SENSOR

Title (en)

ANALYTICAL CIRCUIT FOR A CURRENT SENSOR WORKING ON THE COMPENSATION PRINCIPLE, IN PARTICULAR FOR THE MEASUREMENT OF DIRECT AND ALTERNATING CURRENTS AND METHOD FOR OPERATION OF SAID CURRENT SENSOR

Title (de)

AUSWERTESCHALTUNG FÜR EINEN STROMSENSOR NACH DEM KOMPENSATIONSPRINZIP, INSBESONDERE ZUR MESSUNG VON GLEICH- UND WECHSELSTRÖMEN, SOWIE VERFAHREN ZUM BETRIEB EINES SOLCHEN STROMSENSORS

Title (fr)

CIRCUIT D'EVALUATION POUR DETECTEUR DE COURANT, FONCTIONNANT SELON LE PRINCIPE DE COMPENSATION ET PERMETTANT NOTAMMENT DE MESURER DES COURANTS CONTINUS ET DES COURANTS ALTERNATIFS, ET PROCEDE D'EXPLOITATION D'UN TEL DETECTEUR DE COURANT

Publication

EP 1317673 A1 (DE)

Application

EP 01967067 A

Priority

  • DE 0103356 W
  • DE 10045194 A

Abstract (en)

[origin: WO0223204A1] Signal processing according to the invention permits a complete digital implementation of the control electronics and thus a cost reduction due to complete integration in an ASIC. The magnetic field probe is, for example, supplied with a square wave voltage of determined frequency, by means of resistors, the probe signal is recorded by one or two comparators and the pulse width is digitally measured by counters. Furthermore the conventional analogue final stage for the compensation current is replaced by a PWM end stage with a series connected sigma-delta modulator. A synchronisation with a set synchronisation signal ( for example from the measured value processing) is possible.

IPC 1-7 (main, further and additional classification)

G01R 15/18; G01R 19/20

IPC 8 full level (invention and additional information)

G01R 15/18 (2006.01)

CPC (invention and additional information)

G01R 15/185 (2013.01)

Citation (search report)

See references of WO 0223204A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 0223204 A1 20020321; CN 1243986 C 20060301; CN 1461413 A 20031210; DE 10045194 A1 20020328; EP 1317673 A1 20030611; US 2004204875 A1 20041014; US 6990415 B2 20060124

INPADOC legal status


2006-07-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060120

2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR GB IT

2003-06-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20021112

2003-06-11 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR