Patent ID: 7515037
Filing Date: 2009-04-07
Classification: B60C,B60R,G07C

Abstract:
1. A remote operation system comprising: responders that are provided to correspond to tires of a vehicle and detect a pressure of the tires; an interrogator that is provided in a main body of the vehicle and communicates with the responders so as to process pressure data, wherein the interrogator further comprises a synchronous detector and a first carrier oscillator; a plurality of antennas that are provided in a main body of the vehicle in a vicinities of the tires, respectively, and are connected to the interrogator; a portable transmitter for a remote operation that communicates with the interrogator and unlocks doors of the vehicle, wherein the transmitter further comprises a second carrier oscillator, a modulated signal oscillator, a modulator, and a battery that drives the second carrier oscillator and the modulated signal oscillator; wherein the transmitter and the interrogator communicate with each other in an ID confirmation mode and in an unlock mode subsequent to the ID confirmation mode, and the interrogator unlocks the door after confirming an ID of the transmitter; wherein the first carrier oscillator and the second carrier oscillator output carriers having the same frequency, wherein the interrogator has a reception intensity detector that detects an intensity of a received signal from the transmitter received by each antenna, and when each antenna receives an unlock signal to be transmitted from the transmitter, a door closest to one of the antennas which receives a signal having the highest reception intensity is unlocked.