Tire pressure monitoring system and automatic tire repairing apparatus

A tire pressure monitoring system comprising:

• an on-vehicle controller adapted to transmit wireless signals to tires on a vehicle;
• and
• sensor units each provided to a corresponding one of said tires and each adapted to measure pressure of the corresponding tire and to transmit the measured pressure as a wireless signal;
• wherein said on-vehicle controller is adapted to transmit request signals to said sensor units at a specified timing and said sensor units are each adapted to transmit to said on-vehicle controller an answer signal containing the measured pressure upon receiving the request signal;
• wherein each of said tires is provided with a resin tank and a resin valve, said resin tank containing a resin material capable of sealing a tire failure by being discharged into the tire, said resin valve being adapted to open and close said resin tank to the interior of said tire by a control by corresponding one of the sensor units;
• wherein said on-vehicle controller is adapted to judge from the measured pressure transmitted from the corresponding sensor unit whether the corresponding tire has a failure and to transmit a resin-discharging signal for opening said resin valve to said corresponding sensor unit of said corresponding tire if it is judged that said corresponding tire has a failure;
• and
• wherein said sensor units are each adapted to open the resin valve of the corresponding tire to discharge the resin material from the corresponding resin tank into the interior of said corresponding tire if said resin-discharging signal is received.