Interactive systems and methods with tracking devices
First Claim
1. A wearable device comprising:
- a radio-frequency identification (RFID) tag that stores identification information;
a power harvesting circuit configured to harness power from electromagnetic radiation;
one or more LEDs configured to facilitate detection of the wearable device by an external light detector; and
a microcontroller coupled to the one or more LEDs and configured to generate a control signal to illuminate at least one LED of the one or more LEDs based on the stored identification information in response to receipt of the electromagnetic radiation from an RFID reader via the power harvesting circuit.
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Abstract
A wearable device includes a radio-frequency identification (RFID) tag having a memory that stores identification information. The wearable device also has a power harvesting circuit configured to harness power from electromagnetic radiation. Further, the wearable device has a sensor coupled to the power harvesting circuit and configured to utilize the power to monitor a condition of the wearable device. Even further, the wearable device has a microcontroller coupled to the sensor and configured to write data indicative of the condition to the memory of the RFID tag, wherein the RFID tag is configured to transmit the identification information and the data in response to receipt of the electromagnetic radiation from an RFID reader.
300 Citations
20 Claims
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1. A wearable device comprising:
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a radio-frequency identification (RFID) tag that stores identification information; a power harvesting circuit configured to harness power from electromagnetic radiation; one or more LEDs configured to facilitate detection of the wearable device by an external light detector; and a microcontroller coupled to the one or more LEDs and configured to generate a control signal to illuminate at least one LED of the one or more LEDs based on the stored identification information in response to receipt of the electromagnetic radiation from an RFID reader via the power harvesting circuit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system, comprising:
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a wearable device comprising a radio-frequency identification (RFID) tag, wherein the RFID tag comprises a memory that stores identification information and the RFID tag is configured to transmit the identification information to an RFID reader in response to receipt of electromagnetic radiation from the RFID reader; one or more light emitting diodes (LEDs) disposed on the wearable device and configured to facilitate tracking a position of the wearable device via an electronic device external to the wearable device; and a power harvesting circuit supported by the wearable device and configured to harness power from the received electromagnetic radiation, wherein the harnessed power is utilized to transmit the identification information from the RFID tag and to operate the one or more LEDs. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method, comprising:
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harvesting power from electromagnetic radiation received from a radio frequency identification (RFID) reader using a power harvesting circuit of a wearable device; utilizing the harvested power to operate a microcontroller supported by the wearable device to generate a control signal to illuminate one or more light emitting diodes (LEDs) supported by the wearable device to facilitate detection of the wearable device by an external light detector; and transmitting identification information from a memory of an RFID tag of the wearable device to the RFID reader in response to receipt of the electromagnetic radiation from the RFID reader. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification