Method for detecting the clearance of a brake of a motor vehicle, controller, and brake having same

A controller for detecting the clearance of a brake of a motor vehicle, comprising:

• a processor,
• a non-volatile data memory, on which a computer program is stored that causes the processor to carry out the following method steps:
• reading measurement signals of a wear sensor disposed on the brake,
• examining the measurement signals of the wear sensor for a presence of a signal profile caused by a characteristic signal oscillation that arises whenever a brake lining is brought into contact with a counterpart thereof that is to be braked;
• determining an output signal value representative of a non-actuated state of the brake from the measurement signals,
• determining an event signal value representative of a braking state of the brake from the measurement signals based on the signal profile caused by the presence of the characteristic signal oscillation, and
• determining the clearance from the difference between the event signal value and the output signal value, and
• a data interface.

A vehicle brake comprising:

• a wear sensor, and
• a controller for detecting the clearance of the brake, wherein the wear sensor has a signal communication connection to the controller and the controller comprises:
• a processor,
• a non-volatile data memory, on which a computer program is stored that causes the processor to carry out the following method steps:
• reading measurement signals of the wear sensor,
• examining the measurement signals of the wear sensor for a presence of a signal profile caused by a characteristic signal oscillation that arises whenever a brake lining is brought into contact with a counterpart thereof that is to be braked;
• determining an output signal value representative of a non-actuated state of the brake from the measurement signals,
• determining an event signal value representative of a braking state of the brake from the measurement signals based on the signal profile caused by the presence of the characteristic signal oscillation, and
• determining the clearance from the difference between the event signal value and the output signal value, and
• a data interface.