Frame work for storing, retrieving and displaying real-time data

• US 20040254949A1
• Filed: 06/13/2003
• Published: 12/16/2004
• Est. Priority Date: 06/13/2003
• Status: Abandoned Application

• Current Assignee: ABB Incorporated (ABB Limited)
• Original Assignee: ABB Incorporated (ABB Limited)
• Inventors: Amirthalingam, Raja
• Application Number:
  US10/461,186
• Publication Number:
  US 20040254949A1
• Time in Patent Office: Days
• US Class Current: 707/101
• CPC Class Codes: G05B 23/0264 Control of logging system, e.g. decision on which data to store; time-stamping measurements
• CPC Class Codes: G05B 23/0267 Fault communication, e.g. human machine interface [HMI]

Abstract

A frame work for storing, retrieving and displaying real-time data. The frame work includes software known as tools for data acquisition, that is, logging, file conversion and data analysis/display. Scalar and array type data are simultaneously handled during data logging and further processing. The data logging tool creates short term data in a binary file format and the file conversion software acquires long term data from the short-term data. Process condition based conversion and periodic conversion are also included in the architecture. Each of the three components of the frame work allows for user selection of parameters to maximize the benefit of the tools. The data display component offers automatic or user input based switching between the live data (online) and history data (offline) modes according to computational intensity.

Claims

1. A method for storing and retrieving scalar and array data associated with one or more processes from a real time server comprising:

a. receiving predetermined categories of said scalar and array data simultaneously from said real time server, said predetermined categories comprising good data and uncertain data;

b. reorganizing the received data into a predetermined structure to accommodate said scalar and array data;

c. categorizing said good data as reliable data and resetting all of said received scalar and array data that is in the category of unreliable data to a constant large positive value of data;

d. saving the good data and said data of constant large positive values as short term data;

e. periodically at one frequency constructing long term data from the short term data; and

f. converting, one time or periodically at another frequency, based on predetermined selection criteria that defines predetermined desired segments of data;

(i) short term data into a selected set of data and in a selected file format;

or

(ii) long term data into a selected set of data and in a selected file format.

2. The method of claim 1 wherein said converting is with resampling.

3. The method of claim 1 wherein said converting is without resampling.

4. The method of claim 1 wherein new long term data can be created by merging any existing long term data and short term data or by merging two existing long term data.

5. The method of claim 1 wherein said predetermined selection criteria comprises one or more criteria selected from tag selection;

time window selection;

special process condition selection comprising single point selection or double point selection, with or without offsets, said double point selection producing either single or double segments.

6. The method of claim 1 wherein said selected file format is selected from an expandable list of formats.

7. The method of claim 6 wherein said expandable list of formats comprises MATLAB, XGP/AGP, ASCII formats.

8. The method of claim 5 wherein said process condition selection is assisted by graphical utility to inspect the process condition, said graphical utility displays the profile of any selected process of said one or more processes.

9. The method of claim 2 wherein said resampling includes optimizing the time it takes for resampling large sets of data.

10. The method of claim 2 wherein said resampling includes first order backward looking hold as well as first order forward looking hold for resampling with a short sampling time compared to the data change frequency.

11. A method for storing, retrieving and displaying scalar and array data associated with one or more processes from a real time server comprising:

a. receiving predetermined categories of said scalar and array data simultaneously from said real time server, said predetermined categories comprising good data and uncertain data;

b. reorganizing the received data into a predetermined structure to accommodate said scalar and array data;

c. categorizing said good data as reliable data and resetting all of said received scalar and array data that is in the category of unreliable data to a constant large positive value of data;

d. saving the good data and said data of constant large positive values as short term data;

e. periodically at one frequency constructing long term data from the short term data;

f. connecting a display tool to said short term and long term data for historical data display purposes;

g. connecting said display tool to said real time server for on-line data display purpose; and

h. switching between on-line and off-line data based on computational requirements of the type of display.

12. The method of claim 11 further comprising:

converting, one time or periodically at another frequency, based on predetermined selection criteria that defines predetermined desired segments of data;

(i) short term data into a selected set of data and in a selected file format;

or

(ii) long term data into a selected set of data and in a selected file format.

13. A system for storing and retrieving scalar and array data associated with one or more processes comprising:

a real time data server providing said scalar and array data associated with said one or more processes;

means for receiving predetermined categories of said scalar and array data simultaneously from said real time server, said predetermined categories comprising good data and uncertain data;

means for reorganizing the received data into a predetermined structure to accommodate said scalar and array data;

means for categorizing said good data as reliable data and resetting all of said received scalar and array data that is in the category of unreliable data to a constant large positive value of data;

means for saving the good data and said data of constant large positive values as short term data;

means for periodically at one frequency constructing long term data from the short term data; and

means for converting, one time or periodically at another frequency, based on predetermined selection criteria that defines predetermined desired segments of data;

(i) short term data into a selected set of data and in a selected file format;

or

(ii) long term data into a selected set of data and in a selected file format.

14. A system for storing, retrieving and displaying scalar and array data associated with one or more processes comprising:

a real time data server providing said scalar and array data associated with said one or more processes;

means for receiving predetermined categories of said scalar and array data simultaneously from said real time server, said predetermined categories comprising good data and uncertain data;

means for reorganizing the received data into a predetermined structure to accommodate said scalar and array data;

means for categorizing said good data as reliable data and resetting all of said received scalar and array data that is in the category of unreliable data to a constant large positive value of data;

means for saving the good data and said data of constant large positive values as short term data;

means for periodically at one frequency constructing long term data from the short term data;

means for connecting a display tool to said short term and long term data for historical data display purposes;

means for connecting said display tool to said real time server for on-line data display purpose; and

means for switching between on-line and off-line data based on computational requirements of the type of display.