公开(公告)号：US11613222B2

公开(公告)日：2023-03-28

申请号：US15940585

申请日：2018-03-29

Applicant: Autoliv ASP, Inc.

Inventor： Vincent Colarossi ,  Myron Senyk

IPC: G01R31/00 ,  G01R19/04 ,  B60R21/017 ,  G01R31/52 ,  G01R31/50

Abstract: A method and system for diagnosing a squib loop in a restraint control module using a transient response is disclosed in the present application. The system may be used with a low energy actuator (LEA) which is primarily an inductive device. A diagnostic current may be applied to the squib loop for a diagnostic test period and the voltage between the feed line terminal and the return line terminal or the voltage between the return line terminal and the feed line terminal can be monitored at a specific time or times during the test period for the expected response (e.g. peak voltage, rise rate, etc). The current may also be reversed to check the correct polarity of a diode in the LEA.

公开(公告)号：US20190302162A1

公开(公告)日：2019-10-03

申请号：US15940585

申请日：2018-03-29

Applicant: Autoliv ASP, Inc.

Inventor： Vincent Colarossi ,  Myron Senyk

IPC: G01R31/02 ,  G01R31/00 ,  G01R19/04 ,  B60R21/017

Abstract: A method and system for diagnosing a squib loop in a restraint control module using a transient response is disclosed in the present application. The system may be used with a low energy actuator (LEA) which is primarily an inductive device. A diagnostic current may be applied to the squib loop for a diagnostic test period and the voltage between the feed line terminal and the return line terminal or the voltage between the return line terminal and the feed line terminal can be monitored at a specific time or times during the test period for the expected response (e.g. peak voltage, rise rate, etc). The current may also be reversed to check the correct polarity of a diode in the LEA.