Liquid measurement systems, apparatus, and methods optimized with temperature sensing
First Claim
1. An apparatus for measuring a volume of liquid in a container, the apparatus comprising:
- a plurality of light sources disposed and configured to emit electromagnetic radiation toward the container;
a plurality of sensors optically coupleable to the plurality of light sources, each sensor of the plurality of sensors disposed and configured to detect the electromagnetic radiation emitted by at least a portion of the plurality of light sources;
a temperature sensor disposed and configured to measure at least one temperature associated with a liquid in the container; and
at least one processor configured to;
receive, from each sensor from the plurality of sensors, data representative of a portion of the electromagnetic radiation detected by that sensor;
receive, from the temperature sensor, data representative of the at least one measured temperature;
compare the at least one measured temperature to a temperature guideline to identify any temperature events associated with the data received from each sensor from the plurality of sensors;
adjust the data received from each sensor from the plurality of sensors based on the at least one measured temperature to produce compensated data; and
convert the compensated data into a signature including a plurality of values representative of the electromagnetic radiation detected by each sensor from the plurality of sensors.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for measuring liquid volume in a container includes a plurality of light sources for emitting electromagnetic radiation (EMR) toward the container, a plurality of sensors optically coupleable to the plurality of light sources, each sensor of the plurality of sensors for detecting the EMR emitted by at least a portion of the plurality of light sources, a temperature sensor for measuring at least one temperature associated with a liquid in the container, and at least one processor for receiving data representative of the portion of the detected EMR from each of the plurality of sensors, comparing the at least one measured temperature to a temperature guideline to identify any temperature events associated with the received data; normalizing the received data based on any temperature events associated with the received data; and converting the normalized data into a signature representative of the EMR detected by the plurality of sensors.
91 Citations
20 Claims
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1. An apparatus for measuring a volume of liquid in a container, the apparatus comprising:
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a plurality of light sources disposed and configured to emit electromagnetic radiation toward the container; a plurality of sensors optically coupleable to the plurality of light sources, each sensor of the plurality of sensors disposed and configured to detect the electromagnetic radiation emitted by at least a portion of the plurality of light sources; a temperature sensor disposed and configured to measure at least one temperature associated with a liquid in the container; and at least one processor configured to; receive, from each sensor from the plurality of sensors, data representative of a portion of the electromagnetic radiation detected by that sensor; receive, from the temperature sensor, data representative of the at least one measured temperature; compare the at least one measured temperature to a temperature guideline to identify any temperature events associated with the data received from each sensor from the plurality of sensors; adjust the data received from each sensor from the plurality of sensors based on the at least one measured temperature to produce compensated data; and convert the compensated data into a signature including a plurality of values representative of the electromagnetic radiation detected by each sensor from the plurality of sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of measuring a volume of liquid in a drug container, the method comprising:
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causing a plurality of light sources to emit electromagnetic radiation toward the drug container; detecting, with each sensor from a plurality of sensors, electromagnetic radiation emitted by at least two light sources from the plurality of light sources through the drug container; measuring at least one temperature associated with the liquid in the drug container with a temperature sensor; comparing the at least one measured temperature to a temperature guideline to identify any temperature events associated with the detected electromagnetic radiation; adjusting data representative of a portion of the detected electromagnetic radiation from each sensor from the plurality of sensors based on the at least one measured temperature to produce compensated data; converting the compensated data into a signature including a plurality of values representative of the electromagnetic radiation detected by each sensor from the plurality of sensors; and comparing the signature to a plurality of reference signatures to determine the volume of liquid in the drug container. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method, comprising:
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causing a plurality of light sources to emit electromagnetic radiation toward an injection pen a first time; detecting, with each sensor from a plurality of sensors, the electromagnetic radiation emitted by at least two light sources from the plurality of light sources through the injection pen; measuring at least one temperature associated with a liquid in the injection pen with a temperature sensor; comparing the at least one measured temperature to a temperature guideline to identify any temperature events associated with the detected electromagnetic radiation; adjusting data representative of a portion of the detected electromagnetic radiation from each sensor from the plurality of sensors based on the at least one measured temperature to produce compensated data; converting the compensated data into a first signature including a first plurality of values representative of the electromagnetic radiation detected by each sensor from the plurality of sensors; comparing the first signature to a plurality of reference signatures to determine a first volume of liquid in the injection pen; repeating the steps of causing the plurality of light sources to emit electromagnetic radiation, detecting the emitted electromagnetic radiation, measuring at least one temperature associated with a liquid in the injection pen, comparing the at least one measured temperature to a temperature guideline to identify any temperature events associated with the detected electromagnetic radiation, adjusting data representative of the portion of the detected electromagnetic radiation from each of the plurality of sensors based on the at least one measured temperature to produce compensated data, converting the compensated data into a second signature, and comparing the second signature to the plurality of reference signatures to determine a second volume of liquid in the injection pen; and estimating a dose delivered from the injection pen based on the first signature and the second signature.
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20. A health management system, comprising:
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a drug delivery device including a drug reservoir; and a dose measurement system configured to be removably coupleable to the drug delivery device, the dose measurement system including; a plurality of light sources disposed and configured to emit electromagnetic radiation toward the drug reservoir; a temperature sensor disposed and configured to measure at least one temperature associated with a liquid in the drug delivery device; a plurality of sensors optically coupleable to the plurality of light sources, each sensor of the plurality of sensors disposed and configured to detect a quantity of electromagnetic radiation communicated through the drug reservoir and emitted by at least a portion of the plurality of light sources; at least one processor configured to; receive, from each sensor from the plurality of sensors, data representative of a portion of the electromagnetic radiation detected by that sensor; receive, from the temperature sensor, data representative of the at least one measured temperature; compare the at least one measured temperature to a temperature guideline to identify any temperature events associated with the data received from each sensor from the plurality of sensors; adjust the data received from each sensor from the plurality of sensors based on the at least one measured temperature to produce compensated data; convert the compensated data into a signature including a plurality of values representative of the electromagnetic radiation detected by each sensor from the plurality of sensors; and compare the signature to a plurality of reference signatures to determine a volume of liquid remaining in the drug reservoir; and a display configured to present information to a user indicative of the volume of liquid remaining in the drug reservoir.
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Specification