| 摘要 |
PROBLEM TO BE SOLVED: To reduce the power consumption by a transmission side module on the tire side in a tire internal pressure warning device to give a warning when the internal pressure of the tire fitted to a vehicle is detected, and the detected internal pressure is abnormal. SOLUTION: The operations that the transmission side module is intermittently driven at a predetermined period, the tire internal pressure which is measured by a pressure sensor at the previous driving period and stored is read, and the present tire internal pressure is measured and stored, and the operations that the read tire internal pressure is processed, and the tire internal pressure data to indicate any abnormality of the tire internal pressure is prepared and transmitted are performed in parallel. When the storage of the present tire internal pressure is completed, the pressure sensor is set in a standby condition, the power consumption of a power source of the transmission side module is reduced, and the service life is prolonged thereby. COPYRIGHT: (C)2003,JPO |
