METHOD FOR SWITCHING AN RFID TAG FROM DEEP SLEEP TO ACTIVE MODE
First Claim
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1. A method for switching an active RFID tag from a deep sleep mode into an active mode, the method comprises the steps of:
- providing the active RFID tag with a microcontroller, an antenna, a transmitter connected with the antenna, and a battery; and
providing a detector connected to the active RFID tag for receiving an external energy pulse providing a wake-up pulse to the microcontroller, the wake-up pulse having an effect of opening a brief radio frequency listen window allowing the active RFID tag to receive a message containing an instruction to switch to an active mode.
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Abstract
A method by which an active tag can be switched from a deep sleep mode to an operating mode is based on a detector embedded on an active tag providing a wake up pulse to a state-machine of the tag in response to external energy pulse that will open an radio frequency listen window in which a reader can send any usual command, among them a wake-up command or a configuration command.
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Citations
19 Claims
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1. A method for switching an active RFID tag from a deep sleep mode into an active mode, the method comprises the steps of:
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providing the active RFID tag with a microcontroller, an antenna, a transmitter connected with the antenna, and a battery; and providing a detector connected to the active RFID tag for receiving an external energy pulse providing a wake-up pulse to the microcontroller, the wake-up pulse having an effect of opening a brief radio frequency listen window allowing the active RFID tag to receive a message containing an instruction to switch to an active mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An active RFID tag, comprising:
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a microcontroller; an antenna; a transmitter connected to said antenna; a battery; and a detector for receiving an external energy pulse providing a wake-up pulse to said microcontroller, the wake-up pulse having an effect of opening a brief radio frequency listen window allowing the active RFID tag to receive a message containing an instruction to switch to an active mode. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification