EP 1317673 A1 20030611 - 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
Application
Priority
- DE 0103356 W 20010903
- DE 10045194 A 20000913
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
IPC 8 full level
G01R 15/18 (2006.01)
CPC (source: EP US)
G01R 15/185 (2013.01 - EP US)
Citation (search report)
See references of WO 0223204A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
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
DOCDB simple family (application)
DE 0103356 W 20010903; CN 01816021 A 20010903; DE 10045194 A 20000913; EP 01967067 A 20010903; US 38831503 A 20030313