Displacement diagnosis sensor of brake pedal having stop lamp switch function

A displacement diagnosis sensor of a brake pedal, comprising:

• a sensor housing having a connector with a terminal and fixed to one surface of a pedal mounting bracket;
• a permanent magnet integrally coupled to center of one side a magnet case facing the sensor housing while the magnet case is rotatably coupled to one side of the sensor housing;
• a sensor lever rotating the magnet case on its axis when a brake pedal rotates while one end thereof is integrally coupled to center of the other side the magnet case and the other end thereof is connected to the brake pedal rotatably coupled to the pedal mounting bracket;
• a printed circuit board fixed and coupled to the other side of the sensor housing;
• and
• a hall element fixed to a position of the printed circuit board facing the permanent magnet with being spaced apart from the permanent magnet, and generating current corresponding to a magnetic field generated from the permanent magnet and applying current corresponding to the magnetic field to a controller through the terminal when the permanent magnet rotates,
• wherein the controller converts the current applied from the hall element into an electrical signal corresponding to a rotational displacement amount of the brake pedal and outputs the corresponding electrical signal and at the same time, outputs a control signal for turning on a stop lamp installed in a vehicle when a value of the converted electrical signal is equal to or more than a set value which is previously set and outputs a control signal for turning off the stop lamp when the converted electrical signal value is less than the set value.