EP 1244919 A2 20021002 - METHOD AND DEVICE FOR DETECTING A POLARITY REVERSAL IN A SENSOR
Title (en)
METHOD AND DEVICE FOR DETECTING A POLARITY REVERSAL IN A SENSOR
Title (de)
VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG EINER VERPOLUNG BEI EINEM SIGNALGEBER
Title (fr)
PROCEDE ET DISPOSITIF DE RECONNAISSANCE D'UNE INVERSION DE POLARITE D'UN DETECTEUR DE SIGNAUX
Publication
Application
Priority
- DE 0004476 W 20001215
- DE 19963007 A 19991224
Abstract (en)
[origin: DE19963007A1] The method involves scanning a number of equally spaced angle marks (12,16-19) on the transmitter disc (10,14) to produce an output signal (U20,U21) with positive and negative half-oscillations, which are each generated by the flanks of the angle marks. An evaluation unit converts the signals to rectangular signals. The interval between the level changes is used to detect a polarisation reversal. An evaluation unit converts the signals to rectangular signals, by changing the signal between first and second levels at first and second switching values. The interval between the level changes is used to detect a polarization reversal. The transmitter disk has a reference mark (13), with a larger spacing than the other angle marks. The polarization reversal is detected if the interval of a given level change in the area of the reference mark does not equal the expected interval. An Independent claim is included for a device for implementing the method.
IPC 1-7
IPC 8 full level
F02D 45/00 (2006.01); G01D 5/245 (2006.01); G01P 3/481 (2006.01); G01P 21/02 (2006.01); H04L 29/14 (2006.01); H04L 69/40 (2022.01)
CPC (source: EP KR US)
G01D 5/2457 (2013.01 - EP US); G01P 3/465 (2013.01 - KR); G01P 3/481 (2013.01 - EP US); G01P 13/045 (2013.01 - KR); G01P 21/02 (2013.01 - EP KR US)
Citation (search report)
See references of WO 0148488A2
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 19963007 A1 20010628; CN 1293385 C 20070103; CN 1413302 A 20030423; EP 1244919 A2 20021002; JP 2003518629 A 20030610; JP 4662674 B2 20110330; KR 100852816 B1 20080818; KR 20020092926 A 20021212; US 2003090261 A1 20030515; US 6727686 B2 20040427; WO 0148488 A2 20010705; WO 0148488 A3 20020214
DOCDB simple family (application)
DE 19963007 A 19991224; CN 00817705 A 20001215; DE 0004476 W 20001215; EP 00993644 A 20001215; JP 2001549084 A 20001215; KR 20027008139 A 20020622; US 16891502 A 20020916