| 摘要 |
PURPOSE: A rotation-activated electronic element is provided to limit the using time of an electronic module. CONSTITUTION: An RFID(Radio Frequency ID) tag is combined inside or is mounted on a supporting unit(200) which is rotated during reading. The RFID tag includes an antenna(212), a rotaiting switch(214), a element(216), a processor and time using limiter(218). The antenna converts an RFID signal into an electric energy. If the supporting unit does not rotates over a specific roataion speed, the rotation switch blocks the circuit. |
