Apparatus and method for automatic gauge reading in an inventory control and management system

• US 8,234,084 B2
• Filed: 03/17/2009
• Issued: 07/31/2012
• Est. Priority Date: 03/17/2009
• Status: Active Grant

• Current Assignee: Enraf B. V.
• Original Assignee: Enraf B. V.
• Inventors: Sai, Bin, Wicht, Fernand
• Primary Examiner(s): Wachsman, Hal
• Application Number:
  US12/405,946
• Publication Number:
  US 20100241369A1
• Time in Patent Office: 1,232 Days
• Field of Search: 702/55, 702/50, 702/100
• US Class Current: 702/55
• CPC Class Codes: G01F 23/0023 with a probe suspended by a wire or thread with floats G01F23/40
• CPC Class Codes: G01F 23/0038 using buoyant probes with floats G01F23/30 - G01F23/76
• CPC Class Codes: G01F 23/80 Arrangements for signal processing
• CPC Class Codes: G01F 23/804 containing circuits handling parameters other than liquid level

Abstract

A system includes a probe configured to be raised and lowered in a tank that is configured to receive a material. The system also includes a connector coupled to the probe and having at least one type of coding encoded on the connector. The system further includes a main unit configured to raise and lower the probe using the connector, digitally capture information associated with the at least one type of coding on the connector, determine a level reading identifying a level of the material in the tank using the captured information, and wirelessly transmit the determined level reading.

Claims

1. A method comprising:

raising or lowering a probe in a tank that is configured to receive a material, the probe raised or lowered using a connector, the connector comprising at least one type of coding encoded on the connector;

digitally capturing information associated with the at least one type of coding on the connector;

determining a level reading identifying a level of the material in the tank using the captured information, wherein determining the level reading comprises compensating for contamination or damage associated with the connector; and

wirelessly transmitting the determined level reading.

2. The method of claim 1, wherein compensating for contamination or damage associated with the connector comprises performing a neighbor tracking process using the captured information.

3. The method of claim 2, wherein:

determining the level reading comprises using part of the captured information; and

compensating for the contamination or damage comprises using information adjacent to the part of the captured information.

4. The method of claim 2, wherein performing the neighbor tracking process comprises reading at least one readable marking near an unreadable marking to determine the unreadable marking.

5. The method of claim 4, wherein:

the markings are textual markings; and

reading the at least one readable marking comprises using a training database of images to identify the at least one readable marking.

6. The method of claim 1, wherein:

the connector comprises a tape; and

the at least one type of coding comprises one or more of;

visible markings, perforations, and magnetic codes.

7. The method of claim 1, further comprising:

visually displaying the level reading in digital form to an operator.

8. The method of claim 1, further comprising:

controlling loading of the material into the tank using the determined level reading.

9. A method comprising:

raising or lowering a probe in a tank that is configured to receive a material, the probe raised or lowered using a connector, the connector comprising at least one type of coding encoded on the connector;

digitally capturing information associated with the at least one type of coding on the connector;

determining a level reading identifying a level of the material in the tank using the captured information;

determining a confidence level or confidence interval associated with the determined level reading; and

wirelessly transmitting the determined level reading and the confidence level or confidence interval.

10. A method comprising:

raising or lowering a probe in a tank that is configured to receive a material, the probe raised or lowered using a connector, the connector comprising at least one type of coding encoded on the connector;

digitally capturing information associated with the at least one type of coding on the connector;

determining a level reading identifying a level of the material in the tank using the captured information; and

wirelessly transmitting the determined level reading;

wherein;

digitally capturing the information comprises capturing an image of the connector; and

determining the level reading comprises performing pattern matching using the image.

11. A system comprising:

a probe configured to be raised and lowered in a tank that is configured to receive a material;

a connector coupled to the probe, the connector comprising at least one type of coding encoded on the connector; and

a main unit configured to;

raise and lower the probe using the connector;

digitally capture information associated with the at least one type of coding on the connector;

determine a level reading identifying a level of the material in the tank using the captured information; and

wirelessly transmit the determined level reading.

12. The system of claim 11, wherein the main unit is further configured to:

determine a confidence level or confidence interval associated with the determined level reading; and

wirelessly transmit the confidence level or confidence interval.

13. The system of claim 11, wherein:

the main unit is configured to digitally capture the information by capturing an image of the connector; and

the main unit is configured to determine the level reading by performing pattern matching using the image.

14. The system of claim 11, wherein the main unit is configured to determine the level reading by compensating for contamination or damage associated with the connector.

15. The system of claim 14, wherein:

the main unit is configured to determine the level reading using part of the captured information; and

the main unit is configured to compensate for the contamination or damage using information adjacent to the part of the captured information.

16. The system of claim 11, wherein:

the connector comprises a tape; and

the at least one type of coding comprises one or more of;

visible markings, perforations, and magnetic codes.

17. The system of claim 11, further comprising:

a display configured to visually present the level reading in digital form to an operator.

18. The system of claim 11, wherein the main unit comprises:

a drum configured to raise and lower the probe, the connector wound around the drum;

a sensor configured to digitally capture the information;

a processor configured to determine the level reading; and

a wireless interface configured to wirelessly transmit the determined level reading.

19. An apparatus comprising:

a sensor configured to digitally capture information associated with at least one type of coding encoded on a connector, the connector configured to raise and lower a probe in a tank that is configured to receive a material;

a processor configured to determine a level reading identifying a level of the material in the tank using the captured information; and

a wireless interface configured to wirelessly transmit the determined level reading.

20. The apparatus of claim 19, wherein the processor is further configured to:

determine a confidence level or confidence interval associated with the determined level reading; and

wirelessly transmit the confidence level or confidence interval.

21. The apparatus of claim 19, wherein the processor is configured to determine the level reading using part of the captured information and to compensate for contamination or damage associated with the connector using information adjacent to the part of the captured information.

22. The apparatus of claim 19, wherein:

the connector comprises a tape; and

the at least one type of coding comprises one or more of;

visible markings, perforations, and magnetic codes.

23. A system comprising:

a probe configured to be raised and lowered in a tank that is configured to receive a material;

a connector coupled to the probe, the connector comprising at least one type of coding encoded on the connector; and

a main unit configured to;

raise and lower the probe using the connector;

digitally capture information associated with the at least one type of coding on the connector;

determine a level reading identifying a level of the material in the tank using the captured information, wherein the main unit is configured to compensate for contamination or damage to the connector by performing a neighbor tracking process using the captured information; and

wirelessly transmit the determined level reading.

24. An apparatus comprising:

a sensor configured to digitally capture information associated with at least one type of coding encoded on a connector, the connector configured to raise and lower a probe in a tank that is configured to receive a material;

a processor configured to determine a level reading identifying a level of the material in the tank, wherein the processor is configured to compensate for contamination or damage to the connector by performing a neighbor tracking process using the captured information; and

a wireless interface configured to wirelessly transmit the determined level reading.