Brake pedaling simulator and method for evaluating braking state of vehicle

A brake pedaling simulator adapted to be used in a vehicle that includes a brake pedal, said brake pedaling simulator comprising:

• a base seat;
• a housing mounted on said base seat and cooperating with said base seat to define a primary chamber therebetween;
• a first pressure unit disposed in said primary chamber and including
• a first pressing member that is adapted to be pushed by the brake pedal to move along an axis, and
• a first biasing member that is disposed between and abuts against said first pressing member and said base seat, and that is compressed by said first pressing member when said first pressing member is pushed by the brake pedal
• a second pressure unit disposed in said primary chamber, and including
• a second pressing member that is disposed between said first pressing member and said base seat, and
• a second biasing member that is disposed between and that abuts against said second pressing member and said base seat and that is compressed by said second pressing member when said second pressing member is pushed by said first pressing member to move along the axis;
• a deceleration indication unit mounted on said housing and including
• a slidable block that is movable parallel to the axis, and
• a deceleration resilient member that is disposed between and that abuts against said slidable block and said base seat, and that is compressed by said slidable block when said slidable block moves toward said base seat;
• a sensing unit disposed on said housing, and including
• a first sensor that is for sensing a position of said first pressing member and that is configured to output a first signal indicating the position of said first pressing member, and
• a second sensor that is for sensing a position of said slidable block and that is configured to output a second signal indicating the position of said slidable block;
• and
• a control unit signally connected to said sensing unit for receiving the first signal and the second signal respectively outputted by said first sensor and said second sensor, and configured to calculate a displacement value of each of said first pressing member and said slidable block according to the first signal and the second signal and a difference between the displacement value of said first pressing member and the displacement value of said slidable block to determine a braking state of the vehicle.