Stud unit for a studded tyre, a studded tyre, a device for remotely adjusting a studded tyre, vehicle and operation of device

A device for controlling a studded tire, wherein the device includes a stud unit comprising:

• a housing with a chamber enclosing a medium,
• a stud at least partly inserted into the chamber to be affected by the medium,
• the stud positioned to be movable depending on a change in pressure of the medium in the chamber between a first position for a first pressure and a second position for a second pressure,
• the second pressure being higher than the first pressure,
• in the second position a part of the stud protruding further out from the chamber than in the first position,
• a heating element arranged to heat the medium to adjust the pressure of the medium in the chamber between the first pressure and the second pressure,
• a transducer coil arranged to receive an output current from a power source and generate a magnetic field,
• a receiver coil positioned to be exposed to the magnetic field from the transducer coil and induce an input current,
• a control unit arranged to adjust the output current from the power source to the transducer coil,
• the heating element being arranged to receive said input current induced by the receiver coil and generate heat to heat the medium in the chamber to change the first pressure to the second pressure,
• the transducer coil is arranged at a distance from the receiver coil which is arranged at the housing, and
• the housing is cylindrical in shape, the heating element is arranged within the chamber to be in direct contact with the medium within the chamber, and the receiver coil is wrapped around an outer side of the housing opposite the chamber.