FUEL DISPENSER PULSER ARRANGEMENT
First Claim
1. An apparatus for generating a measure of fluid, comprising:
- a flow meter;
a pulser having a memory including correction data stored therein, said pulser associated with said flow meter for generating pulser data indicative of a volume of fluid delivered through said flow meter;
a switch operatively connected to said memory, said switch operative to vary said memory of said pulser between a write-protected and a write-enabled mode, wherein new correction data may be written to said memory in said write-enabled mode; and
a controller communicatively coupled to said pulser via a serial communication circuit.
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Accused Products
Abstract
The present invention provides an apparatus for generating a measure of fluid. The apparatus comprises a flow meter and a pulser having an identifier and a memory. The pulser is associated with the flow meter for generating pulser data indicative of a volume of fluid delivered through the flow meter. The pulser is also adapted to alter the pulser data using correction data stored in its memory to generate altered pulser data. The pulser is further adapted to store at least one of the pulser data and the altered pulser data in the memory. The apparatus further comprises a switch operatively connected to the pulser'"'"'s memory. The switch is operative to vary the memory of the pulser between a write-protected and a write-enabled mode. Also, the apparatus comprises a controller that is communicatively coupled to the pulser and a serial communication circuit which enables communication between the pulser and the controller. Communication between the controller and the pulser includes the identifier.
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Citations
29 Claims
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1. An apparatus for generating a measure of fluid, comprising:
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a flow meter; a pulser having a memory including correction data stored therein, said pulser associated with said flow meter for generating pulser data indicative of a volume of fluid delivered through said flow meter; a switch operatively connected to said memory, said switch operative to vary said memory of said pulser between a write-protected and a write-enabled mode, wherein new correction data may be written to said memory in said write-enabled mode; and a controller communicatively coupled to said pulser via a serial communication circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A fuel dispenser, comprising:
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a flow meter; a pulser associated with said flow meter for generating a pulse series indicative of a volume of fuel delivered through said flow meter; said pulser having an identifier, correction data and encryption information stored in nonvolatile memory; a control system for controlling the fuel dispenser, said control system being adapted to read from and write to said pulser nonvolatile memory; and a communication circuit to enable communication between said control system and said pulser, wherein said communication between said control system and said pulser is encrypted; wherein at least one of said at least one pulser and said control system is adapted to alter said pulse series using said correction data. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A serial pulser associated with a control circuit and a flow meter for generating pulser data related to the volume of fluid delivered through said flow meter, comprising:
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a nonvolatile memory; a switch operatively connected to said memory, said switch operative to vary said memory of said pulser between a write-protected and a write-enabled mode; calibration data stored in said memory to enable said pulser to generate calibrated pulser data, wherein at least one of said pulser data and said calibrated pulser data is stored in said nonvolatile memory; encryption algorithms stored in said memory to facilitate secure communications between said serial pulser and said control circuit; and a serial communication circuit which enables serial communication between said pulser and said control circuit.
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29. A fuel dispenser, comprising:
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a housing comprising fuel dispenser electronics; a fuel flow line and at least one flow meter operatively connected to said flow line; at least one pulser associated with said at least one flow meter adapted to generate pulser data indicative of a volume of fluid delivered through said at least one flow meter; and a serial communication circuit to enable serial communication between said fuel dispenser electronics and said pulser; wherein said serial pulser comprises; a nonvolatile memory having an identifier stored therein; a switch operatively connected to said memory, said switch operative to vary said memory of said pulser between a write-protected and a write-enabled mode; calibration data stored in said memory to enable said pulser to generate calibrated pulser data, wherein at least one of said pulser data and said calibrated pulser data is stored in said nonvolatile memory; and an encryption algorithm stored in said nonvolatile memory to facilitate secure communications between said serial pulser and said fuel dispenser electronics.
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Specification