| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a portable machine capable of eliminating an installation space of a device for constituting a tire air pressure monitoring system in a vehicle. <P>SOLUTION: To a micro-computer 11 of the portable machine 2, an LF receiving circuit 12 and an RF transmission circuit 13 for performing radio communication between a vehicle control device 3 and them and a detection signal receiving circuit 14 for performing radio communication between a tire air pressure detection device 7 and the receiving circuit as a detection signal receiving means are connected. An air pressure detection signal S8 including the air pressure information of the tire transmitted from the tire air pressure detection device 7 by radio is received by the detection signal receiving circuit 14 provided at the portable machine 2. Further, an air pressure informing signal S6 including the air pressure information is transmitted by the RF transmission circuit 13 provided at the portable machine 2 so as to inform the air pressure of the tire and its temperature through a display device 6 provided at the vehicle 1. <P>COPYRIGHT: (C)2009,JPO&INPIT |
