Electronic control braking system and pre-emergency braking system

The invention relates to an electronic control braking system. The electronic control braking system comprises a cylinder block and a foot bar, an air valve, an electronic control module, an actuator and a detection device which are installed on the cylinder block, wherein the cylinder block is fixed to a vehicle body and is located below a cab; the detection device is used for detecting the trampling speed and displacement of the foot bar; the electronic control module is electrically connected with the actuator and the detection device correspondingly; the air valve is located below the cylinder block ,and a control rod extending into the cylinder block is arranged at the upper end of the air valve; the control rod and the detection end of the foot bar are arranged oppositely and vertically in a corresponding mode; and a decoupling gap is formed between the control rod and the detection end of the foot bar. By adopting the scheme, the electronic control braking system and the pre-emergency braking system ar