| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive tire pneumatic sensor system. <P>SOLUTION: The tire pneumatic sensor system 100 includes: a portable machine 10 which a user can carry; and a pneumatic sensor unit 20 prepared in each of tires 31-34 of a vehicle 30. The portable machine 10 includes; an LF transmission part which transmits a request signal to the pneumatic sensor unit 20 in a predetermined range of periphery of portable machine 10 which can individually perform radio communication with each pneumatic sensor unit 20; and a UHF receiving part which receives tire pneumatic information. Meanwhile each pneumatic sensor unit 20 includes: a detection part which detects pneumatic pressure of tires 31-34; an LF receiving part which receives a request signal transmitted from the LF transmission part; a UHF transmission part which transmits tire pneumatic information to the UHF receiving part; and a control part which indicates transmission of tire pneumatic information to the UHF transmission part, when the request signal is received by the LF receiving part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
