EP 0996874 A2 20000503 - METHOD AND DEVICE FOR TESTING A DOUBLE SENSOR SYSTEM
Title (en)
METHOD AND DEVICE FOR TESTING A DOUBLE SENSOR SYSTEM
Title (de)
VERFAHREN UND ANORDNUNG ZUM PRÜFEN EINES DOPPELSENSORSYSTEMS
Title (fr)
PROCEDE ET SYSTEME POUR CONTROLER UN SYSTEME A DEUX DETECTEURS
Publication
Application
Priority
- DE 9802007 W 19980709
- DE 19730259 A 19970709
Abstract (en)
[origin: DE19730259C1] With a double sensor system used for positioning purposes in safety applications, an operating failure, including an inadmissible increase in the sensitivity of one of the sensors (S1, S2), is made known because reference marks (RM1, RM2) each having a response section (AA1, AA2) and a test section (PA11, PA21) are provided for. If operations are proceeding correctly the sensor emits a first output signal (AS1) in the area of the response section and a second output signal (<o>AS1</o>) in the area of the test section. In contrast, when a maximum sensitivity threshold (P) is exceeded the sensor also produces the first output signal (AS1) in the area of the test section. If there is a known change in the signal of the other sensor this is used to test the change in the output signal of the first sensor.
IPC 1-7
IPC 8 full level
B61L 25/02 (2006.01); G01D 3/08 (2006.01)
CPC (source: EP KR)
B61L 25/025 (2013.01 - EP); B61L 25/026 (2013.01 - EP); G01D 3/08 (2013.01 - EP); G05B 9/00 (2013.01 - KR)
Citation (search report)
See references of WO 9903023A2
Designated contracting state (EPC)
AT CH DE DK FR GR IT LI SE
DOCDB simple family (publication)
DE 19730259 C1 19990204; CN 1262747 A 20000809; EP 0996874 A2 20000503; KR 20010021584 A 20010315; WO 9903023 A2 19990121; WO 9903023 A3 19990401
DOCDB simple family (application)
DE 19730259 A 19970709; CN 98806998 A 19980709; DE 9802007 W 19980709; EP 98945009 A 19980709; KR 20007000142 A 20000107