US 12,409,824 B1
Drive-by-wire vehicle architecture
Alexander Schmitt, Mountain View, CA (US); Andreas Bauer, Mountain View, CA (US); Apeksha Kumavat, Mountain View, CA (US); and Gautam Narang, Mountain View, CA (US)
Assigned to Gatik AI Inc., Mountain View, CA (US)
Filed by Gatik AI Inc., Mountain View, CA (US)
Filed on Dec. 20, 2024, as Appl. No. 18/990,966.
Int. Cl. B60T 13/26 (2006.01); B60T 7/04 (2006.01); B60T 7/12 (2006.01); B60T 13/66 (2006.01)
CPC B60T 13/662 (2013.01) [B60T 7/042 (2013.01); B60T 7/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vehicle, comprising a redundant brake system, comprising:
a front braking subsystem, comprising:
a front electronic control unit (ECU) configured to generate primary front control instructions based on a first set of inputs;
a rear electronic control unit (ECU) configured to generate redundant front control instructions based on the first set of inputs;
a front proportional valve comprising a data input electrically connected to the rear ECU and a pneumatic output, wherein a control signal received from the rear ECU controls a pneumatic pressure output at the pneumatic output;
a solenoid comprising a first fluid inlet fluidly connected to the pneumatic output of the front proportional valve, a second fluid inlet fluidly connected to a brake pedal system, and a solenoid output, wherein a dominant pneumatic signal between the first fluid inlet and the second fluid inlet controls a pneumatic pressure output at the solenoid output;
a front proportional relay valve comprising a data input electrically connected to the front ECU, a fluid inlet fluidly connected to the solenoid output, and a front brake output, wherein a dominant signal between the fluid inlet and the data input controls a brake pressure at the front brake output; and
a set of front pneumatic brake chambers fluidly connected to the brake output.