Method for sensor maintenance of redundant sensor loops

• US 10,127,800 B2
• Filed: 03/07/2017
• Issued: 11/13/2018
• Est. Priority Date: 03/08/2016
• Status: Active Grant

• Current Assignee: True Analytics, LLC
• Original Assignee: True Analytics, LLC
• Inventors: O'Connell, Daniel
• Primary Examiner(s): Flores, Leon
• Application Number:
  US15/452,676
• Publication Number:
  US 20170263110A1
• Time in Patent Office: 616 Days
• CPC Class Codes: G01D 1/18 with arrangements for signalling that a predetermined value of an unspecified parameter has been exceeded G01D1/14 takes precedence
• CPC Class Codes: G08B 21/182 Level alarms, e.g. alarms responsive to variables exceeding a threshold
• CPC Class Codes: G08B 29/04 Monitoring of the detection circuits
• CPC Class Codes: G08B 29/185 Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
• CPC Class Codes: G08B 5/36 using visible light sources

Abstract

A system for performing sensor maintenance, including redundant sensors to collect one or more data points; one or more non-transitory storage mediums; a processor; and an output device; wherein one of the non-transitory storage mediums receives the one or more data points; wherein one of the non-transitory storage mediums includes one or more instructions for performing two or more statistical calculations; and wherein the processor carries out the instructions. The method for using the system includes: the non-transitory storage medium receiving one or more data points from the redundant sensors; the processor performing the statistical calculations on the data points to generate one or more processed data points and comparing the processed data points to a threshold value; and the non-transitory storage medium creating an alert when the processed data points exceed a threshold value for a period of time; and displaying the alert on the output device.

Claims

1. A system for performing sensor maintenance comprising:

at least two sensors to collect one or more data points;

one or more non-transitory storage mediums; and

a processor;

wherein the at least two sensors are redundant sensors;

wherein one of the one or more non-transitory storage mediums receives the one or more data points;

wherein one of the one or more non-transitory storage mediums comprises one or more instructions for performing two or more statistical calculations; and

wherein the processor carries out the instructions for performing two or more statistical calculations on the one or more data points from the at least two sensors to determine if one of the at least two sensors is faulty.

2. The system from claim 1, wherein the two or more statistical calculations comprise at least two of Generalized AutoRegressive Conditional Heteroskedasticity;

Exponentially Weighted Moving Average (“

EWMA”

);

a lag-filter;

mean;

median;

percentile;

differencing;

continuity of a measurement over a period of time; and

standard deviation.

3. The system from claim 1, wherein the two or more statistical calculations are nested functions.

4. The system from claim 1, wherein the at least two redundant sensors are placed in proximity to each other.

5. The system from claim 1, wherein the system further comprises an output device.

6. The method for performing sensor maintenance using the system from claim 5, wherein the method comprises:

the non-transitory storage medium receiving one or more data points from the redundant sensors;

the processor performing two or more statistical calculations based on the data points to generate one or more processed data points;

the processor comparing the one or more processed data points to a threshold value;

the non-transitory storage medium creating an alert when the one or more processed data points exceed a threshold value for a period of time; and

the output device displays the alert.

7. The method of claim 6, wherein the more than two sensors collect data at a predetermined frequency;

wherein the predetermined frequency is dependent on the type of process being monitored by the more than two sensors.

8. The method of claim 6, wherein the non-transitory storage medium stores information regarding the alert.

9. A system for performing sensor maintenance comprising:

two or more sensors to collect one or more data points;

one or more non-transitory storage mediums; and

a processor;

wherein the two or more sensors are redundant sensors;

wherein one of the one or more non-transitory storage mediums receives the one or more data points;

wherein one of the one or more non-transitory storage mediums comprises one or more instructions for performing two or more statistical calculations; and

wherein the processor carries out the instructions for performing the two or more statistical calculations on the one or more data points from the at least two sensors to determine if one of the at least two sensors is faulty.

10. The system from claim 9, wherein the two or more statistical calculations comprise at least two of the following calculations:

Generalized AutoRegressive Conditional Heteroskedasticity;

Exponentially Weighted Moving Average (“

EWMA”

);

a lag-filter;

mean;

median;

percentile;

differencing;

continuity of a measurement over a period of time; and

standard deviation.

11. The system from claim 9, wherein the two or more statistical calculations are nested functions.

12. The system from claim 9, wherein the at least two redundant sensors are placed in proximity to each other.

13. The system from claim 9, wherein the system further comprises an output device.

14. The method for performing sensor maintenance using the system from claim 13, wherein the method comprises:

the non-transitory storage medium receiving one or more data points from the redundant sensors;

the processor performing two or more statistical calculations based on the data points to generate one or more processed data points;

the processor comparing the one or more processed data points to a threshold value;

the non-transitory storage medium creating an alert when the one or more processed data points exceed a threshold value for a period of time; and

the output device displays the alert.

15. The method of claim 14, wherein the more than three sensors collect data at a predetermined frequency;

wherein the predetermined frequency is dependent on the type of process being monitored by the more than three sensors.

16. The method of claim 14, wherein the non-transitory storage medium stores information regarding the alert.