| 摘要 |
PROBLEM TO BE SOLVED: To provide an RFID system capable of reading/writing the integration value information or managing information of a meter. SOLUTION: Induced electromotive force is generated in a first coil 24 by the radio wave of a first radio frequency from a handy terminal 30, power is supplied by a power supply circuit 21 and measurement is stated for a gas meter 10. Integration value data stored in the gas meter 10 are transmitted through the first coil 24 to the handy terminal 30. Induced electromotive force is generated in a second coil 26 by the radio wave of a second radio frequency generated by the handy terminal 30, power is supplied by the circuit 21 and integration value data provided from the gas meter 10 can be stored from the handy terminal 30 into a storage part 25. Further, the storage part 25 stores managing data such as the managing number of the gas meter or date of exchange and this information can be read out of/written in the handy terminal 30 as needed. |
