US 12,256,474 B2
Short circuit detection module
Eleazar Padilla Guardado, Novi, MI (US); and José Miguel Mercado Peña, Canton, MI (US)
Assigned to II STANLEY CO., INC., Battle Creek, MI (US)
Filed by II Stanley Co., Inc., Battle Creek, MI (US)
Filed on Dec. 16, 2021, as Appl. No. 17/552,846.
Claims priority of provisional application 63/125,997, filed on Dec. 16, 2020.
Prior Publication US 2022/0191991 A1, Jun. 16, 2022
Int. Cl. H05B 45/50 (2022.01); G01R 31/44 (2020.01); G07C 5/08 (2006.01); G08B 21/18 (2006.01)
CPC H05B 45/50 (2020.01) [G01R 31/44 (2013.01); G07C 5/0816 (2013.01); G08B 21/185 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An LED short circuit detection system comprising:
an LED light source;
an incandescent light source; and
a failure detection circuit including:
an LED driver circuit with a sensor logic adapted to monitor an input voltage supplied to the LED light source and an output voltage therefrom, and compare a differential of the input and output voltages to a threshold, for detecting an LED light source outage,
an outage detection module adapted to monitor a current to the incandescent light source for detecting an incandescent light source outage, and
an outage detection logic;
wherein the failure detection circuit is configured to detect a short circuit and transmit a lamp failure signal to the outage detection logic, which in turn provides an appropriate signal to a body control module to cause a driver warning in response to a detected light source outage.