Wheel data detection system

A rim assembly for a wheel that includes a tire, said rim assembly comprising:

• a rim having an inner surface, and an outer surface that is adapted for mounting of the tire and that cooperates with the tire to define a chamber therebetween, said inner surface being provided with a tire valve in spatial communication with the chamber, said rim being formed with a through hole separate and spaced apart from said tire valve;
• a wheel data detection system including
• wireless data detection device that includes
• a main body secured to said inner surface of said rim at said through hole, and having a closed end, an open end opposite to said closed end and disposed to be in spatial communication with the chamber of the wheel, and a cavity defined between said closed and open ends,
• a first radio frequency unit mounted to said main body for receiving and transmitting radio signals,
• a detection unit mounted to said main body for detecting pressure in said cavity and for generating a pressure signal according to the pressure detected thereby, and
• a control unit mounted to said main body, and operably connected to said first radio frequency unit and said detection unit for processing the pressure signal received from said detection unit into a data output, and for transmitting the data output to said first radio frequency unit, said first radio frequency unit converting the data output received from said control unit into the radio signal to be transmitted thereby;
• wherein said main body of said wireless data detection device includes a tubular member adapted to be secured to the inner surface of the rim at the through hole, and having first and second openings, said first opening serving as said open end of said main body, said main body further including a sealing member connected to said tubular member at said second opening to form said closed end of said main body;
• said sealing member being a rubber plug;
• wherein said first radio frequency unit is disposed in said tubular member, and includes an antenna, and a first radio frequency circuit connected electrically to said antenna and said control unit.