| 摘要 |
An identifiable ticket contains: a body and a radio frequency identification (RFID) tag attached on the body. The RFID tag includes a chip and an antenna, the chip stores an identified message, and the antenna is electrically connected with the chip. The body includes a ticket stub and at least one separable part removable from the ticket stub so as to tear off the antenna, hence the RFID tag responds reading operations of at least one tag reader in different frequency bands and distances after the antenna is torn off or based on a length of the antenna. A monitoring system for the identifiable ticket contains the identifiable ticket, a computer, and the at least one tag reader. The at least one tag reader is connected with the computer and reads the RFID tag so as to acquire and to send the identified message to the computer. |
| 主权项 |
1. An identifiable ticket comprising:
a body and a radio frequency identification (RFID) tag attached on the body; the RFID tag including a chip and an antenna, wherein the chip stores an identified message, and the antenna is electrically connected with the chip, the body includes a ticket stub and at least one separable part removable from the ticket stub so as to tear off the antenna, such that the RFID tag responds reading operations of plural tag readers in different frequency bands and distances after the antenna is torn off or based on a length of the antenna which is torn off; wherein the antenna of the RFID tag has a short-circuit loop, an impedance adjusting portion, and a first radiator and a second radiator which are symmetrical to each other along a central point; the short-circuit loop has a first loop section and a second loop section, wherein a front end of the first loop section is electrically connected with the first radiator, a front end of the second loop section is electrically coupled with a second radiator, and a distal end of each of the first loop section and the second loop section has a contact point which connects with the chip; the impedance adjusting portion conducts electricity and is electrically connected on the short-circuit loop, when the impedance adjusting portion is not torn off, the RFID tag responds a reading operation of a first tag reader in a first frequency band, and when the at least one separable part is removable from the ticket stub, the impedance adjusting portion is torn off and its length is changed, and the RFID tag responds a reading operation of a second tag reader in a second frequency band. |
