| 摘要 |
<p>An apparatus for alarming a decrease in internal pressure of tyres attached to a four-wheeled vehicle using judgement values obtained based on rotational information obtained from the tyres (W1,W2,W3,W4). The apparatus comprises rotational information detecting means (1) for detecting rotational information on each of the tyres; memory means (2d) for storing the rotational information; arithmetic processing means (2b) for processing a judgement value from the rotational information; and judgement value correcting means for correcting the judgement value using a weight (W) determined based on a steering angle obtained by a steering angle sensor (6) attached to a steering wheel (5). The frequency of the occurrence of erroneous alarms during cornering can be reduced. As a result, it is possible to improve accuracy for detecting the pressure reduction of tyres. <IMAGE></p> |
