Determining properties of liquids within a sealed container
View Patent ↗Devices, systems, and methods for measuring properties of liquids or surrounding gasses within a sealed container. Some embodiments of the devices, systems, and methods disclosed herein are useful for determining and monitoring alcohol (ethanol) content of a liquid within a sealed container. Some embodiments are also useful for determining and monitoring additional properties of the liquid within the sealed container, such as liquid depth (volume) and/or presence of trace chemicals and flavor components.
1 . A system for conducting optical measurements of a liquid in a sealed container, comprising:
a device comprising
a probe with fiber optic or light guiding capabilities having
a leg extending downward through a bung, the leg including a series of crimps, such that its diameter shrinks and expands across its length; and
an end at an upper terminus of the leg that extends upward through the bung; and
a fiber optic connector for detachably coupling the end of the probe to a light source and/or a measurement system;
a sealed container, wherein the bung is placed such that the probe extends into the sealed container, and the fiber optic connector is accessible on the outside of the sealed container;
a light source; and
a measurement system for measuring the intensity of transmitted light as a function of wavelength.
2 . The system of claim 1 , wherein
the probe is substantially U-shaped, having
the leg extending downward, a base curving back up, and a second leg extending upward, wherein
the end at the terminus of the first leg and a second end at the terminus of the second leg both extend upward through the bung; and
a second fiber optic connector for detachably coupling the second end of the probe to a light source and/or a measurement system.
3 . The system of claim 1 , wherein the light source emits light having wavelengths of about 400 nm to about 6000 nm, about 400 nm to about 2500 nm, or about 3000 nm to about 6000 nm.
4 . The system of claim 1 , wherein the measurement system is a spectrometer or photodetector.
5 . The system of claim 1 , wherein the measurement system detects light having wavelengths of about 400 nm to about 6000 nm, about 900 nm to about 1700 nm, about 1100 nm to about 1600 nm, 1300 to about 1400 nm or about 3000 nm to about 6000 nm.
6 . The system of claim 5 , and further comprising a processor programmed to execute instructions to generate spectra for the detected light.
7 . The system of claim 6 , and further comprising a processor programmed to execute spectral fitting using proper orthogonal decomposition (POD).
8 . The system of claim 7 , wherein the processor is further programmed to calculate percent alcohol by volume (ABV).
9 . The system of claim 7 , wherein the processor is further programmed to calculate height of the liquid and volume of the liquid within the container.
10 . A method of conducting optical measurements of a liquid in a sealed container, comprising:
(a) providing a device comprising
a probe with fiber optic or light guiding capabilities having
a leg extending downward through a bung, the leg including a series of crimps, such that its diameter shrinks and expands across its length; and
an end at an upper terminus of the leg that extends upward through a bung; and
a fiber optic connector for detachably coupling the end of the probe to a light source and a measurement system;
(b) inserting the device through a hole defined by the container, such that the probe extends into the liquid, the container is sealed by the bung, and the fiber optic connector is accessible from the outside of the sealed container;
(c) coupling the light source and the measurement system to the probe;
(d) exposing the liquid to light of various wavelengths emitted from the light source; and
(e) measuring the intensity of light absorbed at the various wavelengths by the liquid using the measuring system.
11 . The method of claim 10 , wherein
the probe is substantially U-shaped, having
the leg extending downward, a base curving back up, and a second leg extending upward, wherein
the end at the terminus of the first leg and a second end at the terminus of the second leg both extend through the bung; and
a second fiber optic connector for detachably coupling the second end of the probe to a light source and/or a measurement system.
12 . The method of claim 10 , wherein the measurement system detects light; and further comprising a processor programmed to execute instructions to generate spectra for the detected light.
13 . The method of claim 12 , and further comprising a processor programmed to execute spectral fitting using proper orthogonal decomposition (POD).
14 . The method of claim 13 , wherein the processor is further programmed to calculate percent alcohol by volume (ABV) and/or height of the liquid and volume of the liquid within the container.