US 12,115,903 B2
Detecting stroke of a brake pedal output a control signal to the brake lamps
Eun Sik Kim, Gwangmyeong-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on May 12, 2022, as Appl. No. 17/743,084.
Claims priority of application No. 10-2021-0089965 (KR), filed on Jul. 8, 2021.
Prior Publication US 2023/0009011 A1, Jan. 12, 2023
Int. Cl. B60Q 1/44 (2006.01); B60T 1/10 (2006.01); B60T 13/58 (2006.01)
CPC B60Q 1/444 (2013.01) [B60T 1/10 (2013.01); B60T 13/586 (2013.01); B60T 2270/604 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A brake system comprising:
a stroke detector configured to detect a stroke of a brake pedal and to output a signal;
a first controller configured to generate an ON signal or an OFF signal for a brake lamp according to a result of comparing the signal from the stroke detector with a predetermined reference value; and
a second controller including a switch configured to receive the ON signal or the OFF signal and to control ON or OFF of the brake lamp,
wherein the first controller includes a pedal controller disposed in an electronic brake pedal and a braking controller configured to control a brake device provided on a wheel of a vehicle,
wherein the braking controller is directly connected to the switch,
wherein the pedal controller is configured to transmit the signal from the stroke detector to the braking controller,
wherein the braking controller is configured to generate an ON signal or an OFF signal based on the signal transmitted from the stroke detector,
wherein the signal from the stroke detector includes a first channel signal of which duty linearly decreases from a maximum duty to a minimum duty when the stroke of the brake pedal increases and a second channel signal of which duty linearly increases from the minimum duty to the maximum duty when the stroke of the brake pedal increases,
wherein the first channel signal and the second channel signal have a mutually complementary relationship with 50% duty therebetween, wherein the predetermined reference value includes a first reference value and a second reference value that have a mutually complementary relationship with 50% duty therebetween,
wherein the first controller is configured to generate first ON/OFF signals that transit into a low state from a high state according to a result of comparing the first channel signal and the first reference value with each other, and to generate second ON/OFF signals that transit into the high state from the low state according to a result of comparing the second channel signal and the second reference value with each other, and
wherein the ON/OFF signals correspond to the first ON/OFF signals or the second ON/OFF signals.