Abstract:
An apparatus (12) is attached to a tire (10) encapsulated within elastomeric material (16) located within the toroidal region of pneumatic tire (10). The apparatus is preferably embedded in the tire at its equatorial plane (EP). An integrated circuit chip of the transponder has at least the capacity to handle and transmit data relating to tire pressure.
Abstract:
The invention concerns a tyre equipped with a conductive loop, and a method for implanting such a loop. Said loop (B1) is implanted between the radial body ply (3) and a sealing layer (4) of the tyre. It has, when unfolded flat a substantially rectangular shape, the smaller side and the larger side of the rectangle extending substantially over the width of the tyre and along the periphery thereof, respectively.
Abstract:
Tyre pressure monitoring transponder (10) mounted on pneumatic tyre valve (12). The transponder (10) having a housing (11) for enclosing a processor and a power source for an RF transmitter. An absolute pressure transducer (21) is mounted on the housing (11) to be exposed to and sense pressure in tyre space. Stem of the valve (12) functions as an antenna for transfer of data between the transponder (10) and an interrogator on board a vehicle.
Abstract:
An active integrated circuit transponder (10) with on-board power supply (14) is mounted in or on a vehicle tire (60). A pressure sensor (50), a temperature sensor (110) and a tire rotation sensor (120) are mounted on a substrate (12) along with the integrated circuit transponder chip, the power supply (14) and an antenna (36). Upon receiving an interrogation signal from a remote source (80), the transponder (10) activates the sensors to sense tire pressure and temperature and transmits an encoded radio frequency signal to the remote source (80) containing serial, encoded tire identification, tire position on the vehicle, current tire pressure, current tire temperature and accumulated tire revolutions, as well as maximum and/or minimum tire and temperature pressure values encountered over a predetermined time period and other information specific to the tire.
Abstract:
Electronic transponders (20) embedded within or on vehicle tires (40) are electromagnetically actuated by signals from an interrrogator coil (14). The transponder includes a receiver/transmitter coil (26) of one or more loops of wire (54) strategically placed along the sidewall or in proximity to the tread face of the tire. The transponder responds to actuation by producing a shifted frequency modulated with synchronization pulses and unique device identifying digital information. The transponder data stream can also include information on the condition and environment of the tire. By appropriate placement of the tire transponder coils and the interrogator coils, dynamic reading of the tire data is possible even with the vehicle in motion.