INTEGRATED DEVICES FOR LOW POWER QUANTITATIVE MEASUREMENTS
A device includes a wirelessly enabled energy harvesting device, an energy storage component, a DC-DC converter, and a functional circuit. The energy storage component is electrically coupled to the wirelessly enabled energy harvesting device for storing energy harvested by the wirelessly enabled energy harvesting device from a wireless transmitting device positioned adjacent to the device. The DC-DC converter is electrically coupled to the energy storage component for receiving a voltage output from the energy storage component and converting the received voltage output to a second voltage level to provide power to one or more components of the device. The functional circuit is for measuring a concentration of a substance in a fluid sample. The functional circuit is coupled to the DC-DC converter such that the functional circuit obtains at least a portion of the power provided by the DC-DC converter.
1 . A measurement device comprising:
a near-field communication (NFC) enabled energy harvesting device;
an energy storage component electrically coupled to the NFC enabled energy harvesting device for storing energy harvested by the NFC enabled energy harvesting device from an NFC transmitting device positioned adjacent to the measurement device;
a DC-DC converter electrically coupled to the energy storage component;
a counter; and
a functional circuit electrically coupled to the DC-DC converter
wherein the energy storage component harvests and stores at least a portion of the energy harvested by the NFC enabled energy harvesting device until a first time T 1 set by the counter,
wherein the DC-DC converter is activated at a second time T 2 set by the counter using at least a portion of the energy stored in the energy storage component, and
wherein the functional circuit is activated at a third time T 3 set by the counter using at least a portion of the power provided by the DC-DC converter.
2 . The device of claim 1 , wherein the functional circuit includes one or more components for performing a measurement.
3 . The device of claim 1 , further comprising an NFC antenna coupled to the NFC enabled energy harvesting device.
4 . The device of claim 3 , wherein the NFC enabled energy harvesting device comprises an NFC enabled erasable programmable memory (EEPROM).
5 . The device of claim 1 , wherein the energy storage component is a storage capacitor or a supercapacitor.
6 . The device of claim 1 , further comprising a timing control circuit coupled to the functional circuit, the timing control circuit being configured to cause the functional circuit to be activated at the third time T 3 using at least a portion of the power provided by the DC-DC converter.
7 . The device of claim 6 , wherein the functional circuit comprises at least one sensor, and wherein the timing control circuit is configured to cause the sensor to be activated to perform a measurement at a fourth time T 4 , which is after the third time T 3 .
8 . A measurement device comprising:
a near-field communication (NFC) enabled energy harvesting device;
an energy storage component electrically coupled to the NFC enabled energy harvesting device for storing energy harvested by the NFC enabled energy harvesting device from an NFC transmitting device positioned adjacent to the measurement device;
a pre-charge circuit electrically coupled to the energy storage component;
a DC-DC converter electrically coupled to the pre-charge circuit; and
a functional circuit electrically coupled to the DC-DC converter, wherein the pre-charge circuit is configured to prevent electrical communication between the energy storage component and the DC-DC converter until the energy storage component stores an amount of energy greater than a threshold energy level and to maintain the electrical communication between the energy storage component and the DC-DC converter thereafter; and
wherein the functional circuit is configured to activate using at least a portion of the power provided by the DC-DC converter.
9 . The device of claim 8 , wherein the functional circuit includes one or more components for performing a measurement.
10 . The device of claim 8 , further comprising an NFC antenna coupled to the NFC enabled energy harvesting device.
11 . The device of claim 10 , wherein the NFC enabled energy harvesting device comprises an NFC enabled erasable programmable memory (NFC EEPROM).
12 . The device of claim 8 , wherein the energy storage component is a storage capacitor or a supercapacitor.
13 . The device of claim 8 , further comprising:
at least one processing unit coupled to the functional circuit; and
at least one memory to store processor-executable instructions, the at least one processor being communicatively coupled to the at least one memory, wherein, upon execution of the processor-executable instructions, the at least one processor:
activates prior to the functional circuit using at least a portion of the power provided by the DC-DC converter; and
causes the functional circuit to activate.
14 . The device of claim 13 , wherein the functional circuit comprises at least one sensor, wherein upon execution of the processor-executable instructions, the at least one processor activates the sensor to perform a measurement at time subsequent to the functional circuit activating.
15 . A measurement device for measuring a concentration of a substance in a fluid sample, the measurement device comprising:
a wirelessly enabled energy harvesting device;
an energy storage component electrically coupled to the wirelessly enabled energy harvesting device for storing energy harvested by the wirelessly enabled energy harvesting device from a wireless transmitting device positioned adjacent to the measurement device;
a DC-DC converter electrically coupled to the energy storage component for receiving a voltage output from the energy storage component and converting the received voltage output to a second voltage level to provide power to one or more components of the measurement device; and
a functional circuit for measuring a concentration of the substance in the fluid sample, the functional circuit being coupled to the DC-DC converter such that the functional circuit obtains at least a portion of the power provided by the DC-DC converter.
16 . The device of claim 15 , wherein the one or more components of the measurement device includes at least two components that receive at least a portion of the power provided by the DC-DC converter at predetermined times in a predetermined sequence.
17 . The device of claim 15 , wherein the one or more components of the measurement device and the DC-DC converter each receives at least a portion of the voltage output from the energy storage component at predetermined times in a predetermined sequence.
18 . The device of 17 , further comprising a microcontroller for controlling a power-up sequence of the one or more components of the measurement device and the DC-DC converter according to the predetermined times and the predetermined sequence.
19 . The device of claim 15 , further comprising a pre-charge circuit electrically coupled between the energy storage component and the DC-DC converter, the pre-charge circuit being configured to (i) prevent electrical communication between the energy storage component and the DC-DC converter until the energy storage component stores an amount of energy greater than a threshold energy level and (ii) maintain an electrical communication between the energy storage component and the DC-DC converter thereafter.
20 . The device of claim 15 , wherein the measurement device is batteryless such that the energy storage component, the DC-DC converter, and the functional circuit are each powered solely by energy harvested by the wirelessly enabled energy harvesting device.
21 . The device of claim 15 , wherein the wirelessly enabled energy harvesting device includes a near-field communication (NFC) antenna, an RFID antenna, or both.
22 . The device of claim 15 , wherein the wirelessly enabled energy harvesting device includes a near-field communication NFC antenna, the NFC antenna being a coil.
23 . The device of claim 15 , wherein the DC-DC converter is powered solely by energy harvested by the wirelessly enabled energy harvesting device.
24 . The device of claim 15 , wherein the one or more components of the measurement device include a communication interface for transmitting data from the measurement device to a second device.
25 . The device of claim 24 , wherein the second device is the wireless transmitting device.
26 . The device of claim 15 , wherein the wireless transmitting device is a smartphone including a software application running thereon for communicatively connecting in a bidirectional manner to the measurement device.
27 . The device of claim 15 , wherein the measurement device is flexible and stretchable and configured to be worn directly on skin of a user.
28 . The device of claim 27 , wherein the fluid sample is directly received by the measurement device from the user.
29 . The device of claim 15 , wherein the substance being measured is an analyte, a virus, a protein, bacteria, an enzyme, a toxin, or any combination thereof.
30 . The device of claim 15 , wherein the fluid sample is blood, sweat, urine, saliva, tear drops, air, or any combination thereof.