Tire abnormality detection device for a light rail with rubber wheels

A device for detecting an abnormal condition of a tire for a light rail with rubber wheels, which comprises a wheel, a rubber tire body mounted on an outer circumferential surface of the wheel to form a space therein, to which air is filled, and a rigid auxiliary rim mounted on the outer circumferential surface of the wheel, the device comprising:

• a detection unit which comprises a protrusion part installed inside the auxiliary rim and a portion of a body thereof protruding into a space of the rubber tire body, and a piezoelectric element disposed to face the protrusion part and configured to generate an electrical signal when the protrusion part is pressed toward the inside of the auxiliary rim by a pressing force in contact with an inner circumferential surface of the rubber tire body;
• a controller configured to process the signal generated by the detection unit and control an operation of the device;
• a transmission unit configured to transmit a detection result of the controller to an outside;
• and
• a power unit configured to supply a power to the controller and transmission unit for operation thereof.