| 摘要 |
PCT No. PCT/JP94/00501 Sec. 371 Date Nov. 16, 1994 Sec. 102(e) Date Nov. 16, 1994 PCT Filed Mar. 29, 1994 PCT Pub. No. WO94/22681 PCT Pub. Date Oct. 13, 1994A method and device for detecting a deflated tire on a vehicle by comparing the rolling radii of the tires by means of comparing angular velocity speed signals from wheel speed sensors, one at each wheel, characterized by calculating an error value DEL', where <IMAGE> wherein C1, C2, C3 and C4 are angular velocity values for left-hand front, right=hand front, left-hand rear and right-hand rear wheels of the vehicle respectively, determining a correction factor LAT, calculating a corrected error value DEL where DEL=DEL'-DELCOR wherein DELCOR=(LATxA)+(BxLAT2) wherein A and B are vehicle related constants, and operating a tire warning indicator provided in the vehicle to indicate that at least one tire is deflated when it is sensed that the magnitude of the corrected error value DEL is in the range 0.05 to 0.5. |
