Abstract: A hubodometer for attachment to a wheel hub comprising an outer housing enclosing equipment for measuring distance travelled based on the wheel hub's number of revolutions, and a NFC-based communications link for transmitting to an external unit data related to the measured distance and for receiving operational data such as the diameter of the vehicle's wheel, and the position of the hub to which the hubodometer is attached. The equipment comprises a first electronic assembly conjoined with the outer housing and a second assembly comprising an anti-rotation pendulum provided with two permanent magnets of opposing polarities, the positions of which subtend an angle smaller than 180 degrees. The first electronic assembly comprises a bipolar Hall sensor moving in a circular path that traverses North and South fields of the magnets, whose output signal is a rectangular wave in which different mark-to-space ratios are associated with forward or reverse travel direction.

Abstract: A hubodometer for attachment to a wheel hub comprising an outer housing enclosing equipment for measuring distance travelled based on the wheel hub's number of revolutions, and a NFC-based communications link for transmitting to an external unit data related to the measured distance and for receiving operational data such as the diameter of the vehicle's wheel, and the position of the hub to which the hubodometer is attached. The equipment comprises a first electronic assembly conjoined with the outer housing and a second assembly comprising an anti-rotation pendulum provided with two permanent magnets of opposing polarities, the positions of which subtend an angle smaller than 180 degrees. The first electronic assembly comprises a bipolar Hall sensor moving in a circular path that traverses North and South fields of the magnets, whose output signal is a rectangular wave in which different mark-to-space ratios are associated with forward or reverse travel direction.