Autonomous braking system and autonomous braking method

An autonomous braking method, comprising:

• detecting and recognizing one or more objects located ahead a vehicle;
• tracing one or more objects by a tracing module;
• defining a collision path in accordance with a vehicle dynamic message by a collision path prediction module;
• defining a possible collision range and a non-collision range in accordance with the collision path and a position of each of the one or more objects;
• if one or more object are located within the possible collision range, using a memory register to record the coordinate of each object, and predicting a collision time by a collision time prediction module;
• if one object is originally located within the possible collision range, but moves out of the possible collision range and is located within the non-collision range later, then removing its related data from the memory register;
• analyzing the collision time between the vehicle and the object located in a front lane of the vehicle by a decision module, and using the decision module to determine to provide a warning signal, to pre-brake the vehicle or to automatically brake the vehicle in accordance with different extent of emergency;
• and
• if the vehicle is changed to a side lane, and the object located in the side lane and in front of the vehicle is also located within the possible collision range, then using the prediction module to determine to provide a warning signal, to pre-brake the vehicle or to automatically brake the vehicle in accordance with the collision time between the vehicle and the object and different extent of emergency.