US 11,951,981 B2
Systems and methods for detecting turn indicator light signals
Daniel R Kraft, Berkley, MI (US); Taylor A. Jakubczak, Howell, MI (US); Amanpal S Grewal, Novi, MI (US); Darren Khan, Rochester Hills, MI (US); and Ben Llewellyn, Ypsilanti, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Mar. 1, 2022, as Appl. No. 17/652,965.
Prior Publication US 2023/0278553 A1, Sep. 7, 2023
Int. Cl. B60W 30/095 (2012.01); B60W 10/04 (2006.01); B60W 10/18 (2012.01); B60W 10/20 (2006.01); B60W 50/14 (2020.01); G06V 20/58 (2022.01)
CPC B60W 30/0956 (2013.01) [B60W 10/04 (2013.01); B60W 10/18 (2013.01); B60W 10/20 (2013.01); B60W 50/14 (2013.01); G06V 20/584 (2022.01); B60W 2050/143 (2013.01); B60W 2050/146 (2013.01); B60W 2554/4045 (2020.02); B60W 2710/18 (2013.01); B60W 2710/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting and validating a turn light indicator in a vehicle, the method comprising:
receiving, via at least one processor, optical perception data from an optical perception system of the vehicle, wherein the optical perception data includes data describing at least one detected turn indicator light of another vehicle perceived by the optical perception system including a status of the at least one detected turn indicator light;
generating, via the at least one processor, a turn indicator light signal in the form of a time varying waveform based on the status of the at least one detected turn indicator light;
obtaining, via the at least one processor, a duty cycle and frequency of the turn indicator light signal;
assessing, via the at least one processor, whether the at least one detected turn indicator light is a valid detection by comparing the duty cycle and frequency with predetermined bounds; and
when the at least one detected turn indicator light is assessed to be a valid detection, then controlling, via the at least one processor, at least one automated feature of the vehicle based on the data describing the at least one detected turn indicator light.