公开(公告)号：EP2803058B1

公开(公告)日：2016-12-07

申请号：EP13736397.4

申请日：2013-01-10

申请人： Thales Canada Inc.

发明人： ILIE, Gabriel Cristian ,  LOSTUN, Virgil ,  SANDU, Daniel ,  STAN, Ovidiu, Stan

IPC分类号： G08C25/00 ,  B61L3/10 ,  B61L3/18 ,  G02B6/42 ,  H02H99/00

CPC分类号： G08C25/00 ,  B61L1/185 ,  B61L1/20

公开(公告)号：EP2803058A1

公开(公告)日：2014-11-19

申请号：EP13736397.4

申请日：2013-01-10

申请人： Thales Canada Inc.

发明人： ILIE, Gabriel Cristian ,  LOSTUN, Virgil ,  SANDU, Daniel ,  OVIDIU, Stan

IPC分类号： G08C25/00 ,  B61L3/10 ,  B61L3/18 ,  G02B6/42 ,  H02H99/00

CPC分类号： G08C25/00 ,  B61L1/185 ,  B61L1/20

摘要： A digital input interface is provided which can be checked for its reliability. The configuration of the circuit on the input side allows a high impedance for a DC input signal and a low impedance for induced AC noise, naturally attenuating any AC induced noise while maintaining the DC input signal. The interface also provides a latent failure detection engine. The latent failure detection engine can open and close an optocoupler on the input side of the interface, which discharges and charges a capacitor on the input side. The time taken for the capacitor to recharge when the optocoupler is re-opened is used to determine if there has been any threshold decay in the interface.