EP 3384300 A1 20181010 - METHOD FOR DETECTING AN OPEN LOAD
Title (en)
METHOD FOR DETECTING AN OPEN LOAD
Title (de)
VERFAHREN ZUR DETEKTION EINER OFFENEN LADUNG
Title (fr)
PROCEDE DE DETECTION DE CHARGE OUVERTE
Publication
Application
Priority
- FR 1561810 A 20151203
- EP 2016001929 W 20161118
Abstract (en)
[origin: WO2017092846A1] The present invention relates, in summary, to a method which makes it possible to diagnose an open load or a load actually present in a system including a resistive or inductive load controlled by a control transistor. The method according to the invention provides for measuring the intensity of the current in the branch made up of the closed control transistor and the load and then, consecutively, comparing same with a positive threshold, comparing same with a negative threshold and finally comparing the positive or negative variation thereof over a time period Δt, relative to a reference gradient in order to determine whether a load is actually present or if, conversely, there is an open-load state. The present invention is provided in particular for being used in the field of motor vehicles, in order to allow reliable diagnoses of the possible existence of an open-load state.
IPC 8 full level
G01R 31/34 (2006.01); G01R 31/02 (2006.01); G01R 31/28 (2006.01); G01R 31/42 (2006.01)
CPC (source: EP US)
G01R 31/007 (2013.01 - US); G01R 31/343 (2013.01 - EP US); G01R 31/40 (2013.01 - US); G01R 31/52 (2020.01 - EP US); G01R 31/54 (2020.01 - EP US); G01R 31/2812 (2013.01 - EP US); G01R 31/42 (2013.01 - EP US)
Citation (search report)
See references of WO 2017092846A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017092846 A1 20170608; CN 108603917 A 20180928; CN 108603917 B 20201110; EP 3384300 A1 20181010; FR 3044771 A1 20170609; FR 3044771 B1 20171201; US 10775445 B2 20200915; US 2018372786 A1 20181227
DOCDB simple family (application)
EP 2016001929 W 20161118; CN 201680081008 A 20161118; EP 16798629 A 20161118; FR 1561810 A 20151203; US 201615780486 A 20161118