Liquid gauging using sensor fusion and data fusion
First Claim
1. Liquid gauging system for liquid in a container, comprising:
- a plurality of sensors;
each of said sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to said parameter measured thereby;
there being at least two sensors that measure different parameters of the liquid; and
a processor that receives said sensor outputs and determines, based on said sensor outputs, a quantity of the liquid in the container;
said processor determining said quantity by executing at least one sensor fusion algorithm that is based on a set of relationships between said measured parameters and said quantity.
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Accused Products
Abstract
Liquid gauging system for liquid in a container includes a plurality of sensors; each of the sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to its measured parameter; there being at least two sensors that measure different parameters of the liquid; and a processor that receives the sensor outputs and determines, based on the sensor outputs, a quantity of the liquid in the container; the processor determining the quantity by executing at least one sensor fusion algorithm that is based on a set of relationships between the measured parameters and the quantity. The gauging system can also include a data fusion process for determining quantity based on a plurality of quantity measurements.
105 Citations
71 Claims
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1. Liquid gauging system for liquid in a container, comprising:
- a plurality of sensors;
each of said sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to said parameter measured thereby;
there being at least two sensors that measure different parameters of the liquid; and
a processor that receives said sensor outputs and determines, based on said sensor outputs, a quantity of the liquid in the container;
said processor determining said quantity by executing at least one sensor fusion algorithm that is based on a set of relationships between said measured parameters and said quantity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- a plurality of sensors;
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21. Liquid gauging system for liquid in a container, comprising:
- a plurality of sensors;
each of said sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to said parameter measured thereby; and
a processor that receives said sensor outputs and determines, based on said sensor outputs, a calculation of a quantity of the liquid in the container;
said processor determining said quantity by executing a sensor fusion algorithm that is based on a system model that defines a set of relationships between said measured parameters and said quantity;
said sensor fusion algorithm comprising a recursive filter algorithm. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
- a plurality of sensors;
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31. Liquid gauging apparatus for liquid in a container, comprising:
- a plurality of sensors;
each of said sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to said parameter measured thereby; and
a processor that receives said sensor outputs and determines, based on said sensor outputs, a first calculation of a quantity of the liquid in the container;
said processor determining said quantity by executing a first sensor fusion algorithm that is based on a set of relationships between said measured parameters and said quantity;
said sensor fusion algorithm comprising a neural network. - View Dependent Claims (32, 33, 34)
- a plurality of sensors;
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35. Apparatus for determining quantity of liquid in a container, comprising a plurality of sensors that detect characteristics of a surface plane of the liquid;
- a processor that determines height and attitude parameters of the liquid surface plane, and a neural network that produces a quantity output based on said parameters, said neural network being trained by data sets derived from a computer model of the container.
- View Dependent Claims (36)
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37. Liquid gauging apparatus for liquid in a container, comprising:
- a plurality of sensors;
each of said sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to said parameter measured thereby; and
a processor that receives said sensor outputs and determines said measured parameters by executing a sensor fusion algorithm;
said sensor fusion algorithm comprising a state estimation algorithm. - View Dependent Claims (38, 39, 40, 41)
- a plurality of sensors;
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42. Liquid gauging system for liquid in a container, comprising:
- a plurality of sensors;
each of said sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to said parameter measured thereby; and
a processor that receives said sensor outputs and determines, based on said sensor outputs, a calculation of a quantity of the liquid in the container;
said processor determining said quantity by executing at least two different sensor-based algorithms with each sensor based algorithm being based on a respective set of relationships between said measured parameters and said quantity;
said algorithms producing respective outputs for said quantity;
said processor executing a data fusion algorithm based on said algorithm outputs. - View Dependent Claims (43)
- a plurality of sensors;
- 44. Fluid gauging apparatus consisting of at least one ultrasonic fluid level sensor, at least one pressure based fluid level sensor, at least one temperature sensor and at least one acceleration sensor, and a processor that computes mass of liquid in the container based on outputs from said sensors.
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54. A method for determining quantity of a liquid in a container, comprising the steps of:
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a) deriving data sets that relate liquid surface plane height, container attitude, and volume at different values thereof from a computer model of the container; b) using said data sets to train a neural net; and c) using the neural net to determine liquid quantity based on sensor signals that produce outputs used to derive height and attitude values for the liquid surface and the container respectively. - View Dependent Claims (55)
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56. A liquid gauging system for liquid in a container, comprising:
- a plurality of sensors;
each of said sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to the parameter measured thereby; and
a processor that receives said sensor outputs and determines, based on said sensor outputs, an estimate of a quantity of the liquid in the container by executing a neural network algorithm that is trained by data sets derived from a computer model of said system. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
- a plurality of sensors;
Specification