Tread depth sensing device and tread depth measuring method

摘要

A measurement method and a tread depth measurement system (10) for measuring a depth of a tread (d) of a tire (8) on a vehicle (5) is provided. The system (10) includes an energy source (65) for emitting a wireless signal to be transmitted to the tire (8); a sensor (64) for detecting a return wireless signal emitted from the tire (8) to be transmitted in response to the wireless signal from the energy source (65); and a housing (12) over which the tire (8) is to roll while attached to the vehicle (5), said housing (12) separating the sensor (64) from the tire (8) while the tread depth (d) is being measured. A control unit (60) is operatively coupled to the sensor (64) for determining the depth of the tread (d) as a function of at least the return wireless signal detected by the sensor (64).