Blending process end point detection

Patent metadata

Field	Value
Publication number	US-11860035-B2
Application number	US-202117646038-A
Country	US
Kind code	B2
Filing date	Dec 27, 2021
Priority date	Dec 27, 2021
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

In some implementations, a device may identify, based on spectroscopic data, a pseudo steady state end point indicating an end of a pseudo steady state associated with the blending process. The device may identify a reference block and a test block from the spectroscopic data based on the pseudo steady state end point. The device may generate a raw detection signal associated with the reference block and a raw detection signal associated with the test block. The device may generate a statistical detection signal based on the raw detection signal associated with the reference block and the raw detection signal associated with the test block. The device may determine whether the blending process has reached a steady state based on the statistical detection signal.

First claim

What is claimed is:

1. A method, comprising:
receiving, by a device, spectroscopic data associated with a blending process;
identifying, by the device, a pseudo steady state end point based on the spectroscopic data, the pseudo steady state end point indicating an end of a pseudo steady state associated with the blending process;
identifying, by the device, a reference block and a test block from the spectroscopic data based on the pseudo steady state end point;
generating, by the device, a raw detection signal associated with the reference block and a raw detection signal associated with the test block;
generating, by the device, a statistical detection signal based on the raw detection signal associated with the reference block and the raw detection signal associated with the test block; and
determining, by the device, whether the blending process has reached a steady state based on the statistical detection signal.

2. The method of claim 1 , wherein identifying the pseudo steady state end point comprises:
performing an F-test using moving dual blocks associated with the spectroscopic data to determine a value associated with identifying the pseudo steady state end point; and
determining that the value satisfies a pseudo steady state end point threshold.

3. The method of claim 2 , wherein the F-test is performed based on a principal component analysis (PCA) model generated based on spectra, from the spectroscopic data, within the moving dual blocks.

4. The method of claim 2 , wherein the F-test is performed based on autoscaling whole spectrum, from the spectroscopic data, within the moving dual blocks.

5. The method of claim 2 , wherein the F-test is performed based on a principal component analysis (PCA) model generated based on historical spectroscopic data.

6. The method of claim 1 , wherein the raw detection signal associated with the reference block is generated based on a travel space volume (TSV) calculated based on the reference block.

7. The method of claim 1 , wherein the raw detection signal associated with the test block is generated based on a travel space volume (TSV) calculated based on the test block.

8. The method of claim 1 , wherein the raw detection signal associated with the reference block is generated based on an individual block standard deviation (IBSD) calculated based on the reference block.

9. The method of claim 1 , wherein the raw detection signal associated with the test block is generated based on an individual block standard deviation (IBSD) calculated based on the test block.

10. The method of claim 1 , wherein generating the statistical detection signal comprises:
performing an F-test based on the raw detection signal associated with the reference block versus the raw detection signal associated with the test block to determine the statistical detection signal.

11. The method of claim 1 , wherein determining whether the blending process has reached the steady state comprises:
determining whether a value of the statistical detection signal satisfies a condition associated with a steady state threshold.

12. The method of claim 1 , further comprising providing an indication that the blending process has reached the steady state based at least in part on a determination that the blending process has reached the steady state.

13. The method of claim 1 , further comprising identifying a junction point based on the pseudo steady state end point, the junction point indicating a transition from an unsteady state to the pseudo steady state.

14. A device, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
receive spectroscopic data associated with a blending process;
identify a pseudo steady state end point based on the spectroscopic data, the pseudo steady state end point indicating an end of a pseudo steady state associated with the blending process;
identify a reference block and a test block from the spectroscopic data based on the pseudo steady state end point;
generate a raw detection signal associated with the reference block and a raw detection signal associated with the test block;
generate a statistical detection signal based on the raw detection signal associated with the reference block and the raw detection signal associated with the test block; and
determine whether the blending process has reached a steady state based on the statistical detection signal.

15. The device of claim 14 , wherein the one or more processors, to identify the pseudo steady state end point, are configured to:
perform an F-test using moving dual blocks associated with the spectroscopic data to determine a value associated with identifying the pseudo steady state end point; and
determine that the value satisfies a pseudo steady state end point threshold.

16. The device of claim 14 , wherein at least one of the raw detection signal associated with the reference block or the raw detection signal associated with the test block is generated based on a travel space volume (TSV) or an individual block standard deviation (IBSD).

17. The device of claim 14 , wherein the one or more processors, to generate the statistical detection signal, are configured to:
perform an F-test based on the raw detection signal associated with the reference block versus the raw detection signal associated with the test block to determine the statistical detection signal.

18. The device of claim 14 , wherein the one or more processors are further configured to identify a junction point based on the pseudo steady state end point, the junction point indicating a transition from an unsteady state to the pseudo steady state.

19. The device of claim 14 , wherein the one or more processors are further configured to provide an indication that the blending process has reached the steady state based at least in part on a determination that the blending process has reached the steady state.

20. A non-transitory computer-readable medium storing a set of instructions, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a device, cause the device to:
receive spectroscopic data associated with a blending process;
identify a pseudo steady state end point based on the spectroscopic data, the pseudo steady state end point indicating an end of a pseudo steady state associated with the blending process;
identify a reference block and a test block from the spectroscopic data based on the pseudo steady state end point;
generate a raw detection signal associated with the reference block and a raw detection signal associated with the test block;
generate a statistical detection signal based on the raw detection signal associated with the reference block and the raw detection signal associated with the test block; and
determine whether the blending process has reached a steady state based on the statistical detection signal.

Assignees

• Viavi Solutions Inc

Inventors

• Hsiung Chang Meng
• Sun Lan
• Klimek Michael

Classifications

• G01J3/0275 Primary

  making use of sensor-related data, e.g. for identification of sensor parts or optical elements · CPC title

• G01J2003/2833

  and memorised spectra collection · CPC title

• G01J2003/2836

  Programming unit, i.e. source and date processing · CPC title

• G01N21/25 Primary

  Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands · CPC title

• G01N21/359 Primary

  using near infrared light · CPC title