Brake pad alarm mechanism for automobile brake calipers

A brake pad alarm mechanism for automobile brake calipers comprises a mounting plate and a friction part. The mounting plate is in a thin plate shape, and positioning holes are formed in the left side and the right side of the mounting plate. Bolts are assembled in the positioning holes and penetrate through the positioning holes to be installed on the brake calipers. A mounting groove is formed in the middle of the mounting plate, and a contact is arranged in the mounting groove; pistons of the brake calipers abut against the interiors of the installation grooves, and the contacts are in signal connection with the upper controller through independent signal lines. The friction part is arranged at the bottom of the mounting plate and is in contact with the brake disc; an embedded conductive piece is arranged in the friction part and comprises a cylindrical conductor, a connecting rod and a tray; the conductor is arranged on the tray, and an insulating wrapping layer is arranged on the periphery of the tray; a