EP 1430605 A1 20040623 - ANALOGUE INPUT FOR AN ELECTRONIC CIRCUIT
Title (en)
ANALOGUE INPUT FOR AN ELECTRONIC CIRCUIT
Title (de)
ANALOGER EINGANG FÜR EINE ELEKTRONISCHE SCHALTUNG
Title (fr)
ENTREE ANALOGIQUE POUR CIRCUIT ELECTRONIQUE
Publication
Application
Priority
- FR 0202981 W 20020830
- FR 0111487 A 20010905
Abstract (en)
[origin: WO03021789A1] The invention relates to an analogue input (40) for an electronic circuit which is intended to be connected to an electric output of a sensor (44) that is used to measure a physical parameter. The aforementioned sensor is supplied with a supply voltage Vcc and provides an analogue voltage Vs at the electrical output thereof, said analogue voltage being a function of the parameter to be measured. The analogue input comprises at least one analogue/digital converter (46, 48) of resolution RN. The invention is characterised in that it comprises a computer (64) which controls the analogue/digital converter in order to perform: (i) an analogue/digital conversion of supply voltage Vcc, the analogue/digital converter supplying the computer with a numerical value, Ralim, for supply voltage Vcc of the sensor; and (ii) an analogue/digital conversion of analogue voltage Vs of the parameter to be measured, the analogue/digital converter supplying the computer with a numerical value, r, for analogue voltage Vs to be measured and the computer supplying a numerical value, Vn, for the parameter to be measured, such as Vn = (r/Ralim). RN. The invention is suitable for use as an analogue input for automatisms.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H03M 1/0621 (2013.01 - EP US); H03M 1/12 (2013.01 - EP US)
Citation (search report)
See references of WO 03021789A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03021789 A1 20030313; EP 1430605 A1 20040623; FR 2829321 A1 20030307; FR 2829321 B1 20041224; US 2004246157 A1 20041209; US 6980141 B2 20051227
DOCDB simple family (application)
FR 0202981 W 20020830; EP 02797679 A 20020830; FR 0111487 A 20010905; US 48671204 A 20040213