Patent ID: 8742915

Claim:
A method of optimized transmission of finalized data (D F ) to a central unit of parameters of tires of a vehicle, said data being obtained on the basis of raw data (D B ) of parameters measured by sensors ( 14 , 16 , 17 ) of the wheel units ( 10 ) of a system for monitoring the pressure of the tires by way of a radiofrequency circuit ( 20 ), said wheel units ( 10 ) each comprising: a processor ( 15 ), located in a processing module ( 12 ), for calculating the finalized data (D F ) on the basis of the raw data (D B ) a memory ( 18 ) so as to store the raw data (D′ B ) and the finalized data (D′ F ), a clock ( 19 ) of the processor ( 15 ), linked to the processor ( 15 ), possessing a time base (CLK B ) for managing the frequency of the measurements of the raw data (D B ), a clock ( 26 ) of the emission circuit ( 20 ) possessing a time base (Tps) and managing the frequency of emission by an emission circuit ( 20 ) of the finalized data (D F ) to the central unit, said method being characterized in that it comprises the following steps: step 1, verification in each wheel unit ( 10 ), by comparison means ( 13 ), situated in the processing module ( 12 ) and linked to the processor ( 15 ) and to the sensors ( 14 , 16 , 17 ), that the difference between a new raw datum (D B ) of at least one reference parameter, provided at a given instant, and a raw datum (D′ B ) of this same parameter, provided at an earlier instant and stored in the memory ( 18 ), is greater, in absolute value, than a predetermined threshold of variation (S), step 2, if the threshold of variation is crossed, calculation by the processor ( 15 ) of the finalized data (D F ) of the parameters on the basis of the raw data (D B ), step 3, storage in the memory ( 18 ) of the new raw data (D′ B ) and of the corresponding new finalized data (D′ F ), step 4, transmission of the finalized data (D F ) to the central unit by way of the emission circuit ( 20 ).