Systems and methods for passive radio enabled power gating for a body mountable device
First Claim
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1. A system for power gating for a wearable glucose sensor comprising:
- a power supply;
a Near Field Communication (NFC) antenna to receive NFC signals;
a Radio Frequency (RF) rectifier electrically coupled to the NFC antenna to generate a current based on a first signal received from the NFC antenna;
a sensor terminal adapted to electrically couple to a sensor;
a memory coupled to the sensor and configured to store data received from the sensor;
an electronic switch coupled between the power supply and the sensor terminal to control electrical connection between the power supply in the sensor terminal, wherein the RF rectifier is further coupled to the electronic switch to apply the current to the electronic switch to change a state of the electronic switch; and
a network interface coupled to the memory, the network interface activated by a second NFC signal and transmit data stored in the memory to a remote device.
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Abstract
Systems and methods for passive radio enabled power gating for a body mountable device are disclosed. In one embodiment, a system for power gating includes: a power supply; a Near Field Communication (NFC) antenna to receive NFC signals; a Radio Frequency (RF) rectifier electrically coupled to the NFC antenna to generate a current based on a signal received from the NFC antenna; and an electronic switch coupled between the power supply and a sensor, wherein the RF rectifier is further coupled to the switch to apply the current to the switch to change a state of the switch.
13 Citations
22 Claims
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1. A system for power gating for a wearable glucose sensor comprising:
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a power supply; a Near Field Communication (NFC) antenna to receive NFC signals; a Radio Frequency (RF) rectifier electrically coupled to the NFC antenna to generate a current based on a first signal received from the NFC antenna; a sensor terminal adapted to electrically couple to a sensor; a memory coupled to the sensor and configured to store data received from the sensor; an electronic switch coupled between the power supply and the sensor terminal to control electrical connection between the power supply in the sensor terminal, wherein the RF rectifier is further coupled to the electronic switch to apply the current to the electronic switch to change a state of the electronic switch; and a network interface coupled to the memory, the network interface activated by a second NFC signal and transmit data stored in the memory to a remote device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for power gating comprising:
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receiving a Near Field Communication (NFC) signal using a NFC antenna; converting the NFC signal to a current; applying the current to an electronic switch positioned to interrupt current flow between a power supply and a load, the electronic switch opened or closed by the current; activating a sensor to measure blood glucose and transmit sensor data associated with blood glucose; storing the sensor data in a memory; activating a network interface based in part on a second NFC signal; and transmitting stored sensor data to a remote device using the network interface. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A wearable glucose sensor comprising:
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a power supply; a Near Field Communication (NFC) antenna for receiving NFC signals; a Radio Frequency (RF) rectifier electrically coupled to the NFC antenna to generate a current based on a first signal received from the NFC antenna; a blood glucose sensor; a processor coupled to the blood glucose sensor, the processor to; store sensor data received from the blood glucose sensor; upon receipt of a second signal received from the NFC antenna, transmit the sensor data to a remote device using a network interface; and an electronic switch coupled between the power supply and the processor, wherein the RF rectifier is further coupled to the electronic switch to apply the current to the electronic switch to provide power from the power supply to the processor. - View Dependent Claims (21, 22)
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Specification