US Patent 10399393 Radar sensor system for tire monitoring

A system includes a millimeter-wave radar sensor circuit configured to be fastened to a wheel having a tire, and a controller. The millimeter-wave radar sensor circuit is configured to transmit a radio-frequency (RF) signal towards a portion of an inner surface of the tire and receive a reflected signal from the tire. The controller is configured to process the reflected signal, determine a property value of the tire based on processing the reflected signal, and generate and transmit a first signal representative of the property value of the tire.