Fuel dispenser flow meter fraud detection and prevention

Patent metadata

Field	Value
Publication number	US-9523597-B2
Application number	US-201414215711-A
Country	US
Kind code	B2
Filing date	Mar 17, 2014
Priority date	Mar 15, 2013
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

A fuel flow meter assembly for detecting fraud caused by tampering. The fuel flow meter assembly comprises a fuel flow meter comprising a shaft and a fiber optic displacement sensor operatively connected to the fuel flow meter shaft for generating information representative of an amount of fuel delivered through the fuel flow meter. The fuel flow meter assembly also comprises at least one transponder coupled with one of the fuel flow meter shaft and the displacement sensor. Further, the fuel flow meter assembly comprises at least one interrogator electronics coupled with the other of the fuel flow meter shaft and the displacement sensor. The at least one interrogator electronics is configured for remote electronic communication with the at least one transponder.

First claim

What is claimed is:

1. A fuel flow meter assembly comprising:
a fuel flow meter comprising a shaft; and
a first displacement sensor comprising at least one transponder coupled for rotation with said fuel flow meter shaft and at least one interrogator electronics, said first displacement sensor operative to generate information representative of a first amount of fuel delivered through said fuel flow meter based on remote electronic communication between said at least one interrogator electronics and said at least one transponder;
a second displacement sensor comprising a disc operatively connected for rotation with said fuel flow meter shaft, said disc defining a plurality of radial slots therethrough, said second displacement sensor in optical communication with a light source and a detector;
wherein rotation of said fuel flow meter shaft allows light from said light source to pass through said plurality of radial slots and be detected at said detector; and
wherein said second displacement sensor is operative to generate information representative of a second amount of fuel delivered through said fuel flow meter.

2. The fuel flow meter assembly of claim 1 , wherein said light source and said detector are in electronic communication with a fuel dispenser control system.

3. The fuel flow meter assembly of claim 2 , wherein said fuel dispenser control system determines said first amount of fuel delivered through said fuel flow meter based on information representative of responsive signals from said transponder to said interrogator electronics and determines said second amount of fuel delivered through said fuel flow meter based on said light detected at said detector.

4. The fuel flow meter assembly of claim 3 , wherein said fuel dispenser control system compares said first amount with said second amount.

5. The fuel flow meter assembly of claim 3 , wherein said first and second amounts are representative of the flow rate of fuel delivered through said fuel flow meter.

6. The fuel flow meter assembly of claim 5 , wherein said at least one interrogator electronics transmits information representative of responsive signals from said transponder to a fuel dispenser control system.

7. The fuel flow meter assembly of claim 1 , wherein said at least one transponder comprises a plurality of transponders.

8. The fuel flow meter assembly of claim 7 , wherein said fuel dispenser control system is configured to determine at least one of the rate of rotation, direction of rotation, and the position of said fuel flow meter shaft.

9. The fuel flow meter assembly of claim 1 , wherein said at least one interrogator electronics is configured to interrogate said at least one transponder during each rotation of said fuel flow meter shaft.

10. A method of detecting fraud in association with a flow meter assembly, said flow meter assembly comprising a flow meter comprising a shaft, said method comprising the steps of:
providing a first displacement sensor comprising at least one transponder and at least one interrogator electronics;
generating information representative of a first amount of fluid delivered through said flow meter based on remote electronic communication between said at least one interrogator electronics and said at least one transponder;
providing a second displacement sensor comprising a disc operatively connected for rotation with said flow meter shaft, said disc defining a plurality of radial slots therethrough, said second displacement sensor in optical communication with a light source and a detector;
generating information representative of a second amount of fluid delivered through said flow meter based on light detected at said detector; and
comparing said first amount with said second amount.

Assignees

• Gilbarco Inc

Inventors

• Williams Rodger K
• Payne Edward A
• Lofgren John A
• Monson Mark B

Classifications

• B67D7/08

  Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred (arrangement of flow- or pressure-control valves B67D7/36; computing, calculating, counting G06; coin-freed apparatus for dispensing fluids G07F13/00; prepayment devices for metering liquids G07F15/00) · CPC title

• G01F15/007 Primary

  comprising means to prevent fraud · CPC title

• B67D7/22

  Arrangements of indicators or registers (indicating or recording in fluid meters G01F15/06) · CPC title

• G01F1/05

  by using mechanical effects · CPC title

• B67D7/20

  of rotary type · CPC title