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1. WO1996039701 - AUTOMATED VIDEO CHARACTERIZATION OF NUCLEAR POWER PLANT COMPONENTS

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

What is Claimed is:
1. An automated system for determining positions of a plurality of nuclear power plant components organized in an array within a housing of a nuclear power plant, the housing having at least one reference location, said system comprising:
camera means for inputting at least one first image, with one of the first images including at least one of said nuclear power plant components and the reference location;
digitization means for generating a second image of said at least one of said nuclear power plant components from the first image, with the second image being a digitized image including a plurality of pixel elements; and
determining means for determining a position of said at least one of said nuclear power plant components with respect to the reference location from a count of the pixel elements.
2. The system as recited in Claim 1 wherein each of said nuclear power plant components have plural edges; and wherein said determining means includes:
means for locating some of the edges of said at least one of said nuclear power plant components; and
counting means for counting a count of die pixel elements between the reference location and said some of the edges of said at least one of said nuclear power plant components.
3. The system as recited in Claim 2 wherein each of the edges of said nuclear power plant components have locator means associated therewith; wherein said means for locating some of the edges includes means for locating said locator means; and wherein said counting means includes means for counting a count of the pixel elements between the reference location and said locator means of some of the edges of said at least one of said nuclear power plant components.
4. The system as recited in Claim 3 wherein the reference location includes two axes; wherein each of said nuclear power plant components includes two edges which are generally parallel with respect to the two axes; wherein each of said locator means includes a pair of landmarks associated with one of the edges of a corresponding one of said nuclear power plant components; wherein said counting means includes first counting means for counting a first pair of counts of the pixel elements from a first axis of the reference location to the pair of landmarks associated with a first edge of said one of said nuclear power plant components, and second counting means for counting a second pair of counts of the pixel elements from a second axis of the reference location to the pair of landmarks associated with a second edge of said one of said nuclear power plant components; and wherein said determining means includes means for determining an orientation of said one of said nuclear power plant components from the first and second pairs of counts.
5. The system as recited in Claim 4 wherein each of the pairs of landmarks have a predetermined distance therebetween; and wherein said counting means includes third counting means for counting a count of the pixel elements between one of the pairs of landmarks; and wherein said determining means includes means for calibrating a distance between adjacent pairs of the pixel elements from the predetermined distance and said count of the pixel elements between one of the pairs of landmarks.
6. The system as recited in Claim 5 wherein said determining means includes first calculating means for calculating die distance between the first axis of the reference location and each of the landmarks on the first edge of said one of said nuclear power plant components, and second calculating means for calculating the distance between the second axis of the reference location and each of the landmarks on the second edge of said one of said nuclear power plant components.
7. The system as recited in Claim 6 wherein said nuclear power plant components include a nuclear fuel assembly having four sides each of which has a predetermined dimension, with adjacent sides defining a comer of the nuclear fuel assembly; and wherein said determining means includes third calculating means for calculating the distance between the reference location and each of the comers of the nuclear fuel assembly.
8. The system as recited in Claim 6 wherein said nuclear power plant components include a plurality of nuclear fuel assemblies each of which has four sides, with each of the sides having a predetermined dimension and with adjacent sides defining a comer of the nuclear fuel assembly; and wherein said determining means includes third calculating means for calculating the distance between the reference location and each of the comers of the nuclear fuel assemblies.
9. The system as recited in Claim 8 wherein the nuclear fuel assemblies include a first nuclear fuel assembly and a second nuclear fuel assembly; wherein said determining means includes fourth calculating means for calculating an angle of inclination of each of the nuclear fuel assemblies with respect to one of the axes of the reference location, fifth calculating means for calculating die distance between each of the landmarks on one of the edges of the first nuclear fuel assembly and the corresponding landmarks on one of the edges of the second nuclear fuel assembly, and sixth calculating means for calculating the distance between the reference location and each of the comers of the second nuclear fuel assembly.
10. An automated system for determining positions of a plurality of nuclear fuel assemblies organized in an array within a housing of a nuclear power plant, the housing having at least one reference location, said system comprising:
camera means for inputting at least one first image, with one of the first images including at least one of said nuclear fuel assemblies and the reference location;
digitization means for generating a second image of said at least one of said nuclear fuel assemblies from the first image, the second image being a digitized image including a plurality of pixel elements; and
determining means for determining a position of said at least one of said nuclear fuel assemblies with respect to the reference location from a count of the pixel elements.
11. The system as recited in Claim 10 wherein each of said nuclear fuel assemblies have plural edges; and wherein said determining means includes:
means for locating some of the edges of said at least one of said nuclear fuel assemblies; and counting means for counting a count of the pixel elements between the reference location and said some of the edges of said at least one of said nuclear fuel assemblies.
12. The system as recited in Claim 11 wherein each of the edges of said nuclear fuel assemblies have locator means associated therewidi; wherein said means for locating some of the edges includes means for locating said locator means; and wherein said counting means includes means for counting a count of the pixel elements between the reference location and said locator means of some of the edges of said at least one of said nuclear fuel assemblies.