SYSTEM AND METHOD TO MEASURE PARAMETERS DISTRIBUTION IN SHEET-LIKE OBJECTS
First Claim
1. A measuring device for measuring a spatial distribution of at least one parameter of a sheet-like object, comprising:
- a parameter measuring unit for measuring a parameter at least at a point A and a point B on an object surface,a coordinate measuring unit for measuring a coordinate at least at the point B relative to the point A on the object surface, the coordinate measuring unit being connected to a digital signal processing unit, the coordinate measuring, unit performing the coordinate measuring by determining a correlation between a first image of a spot around the point A at a time T1 and a second image of a spot around the point B at a time T2, the first and the second images being taken by a digital camera,a synchronization unit connected to the parameter measurement unit and to the coordinate measuring unit, the synchronization unit adapted to turn on the coordinate measuring unit simultaneously with the parameter measuring unit;
moving platform to perform a displacement of at least the parameter measuring unit and the coordinate measuring unit together in any direction within the object surface, wherein the displacement consists of steps, a length of each step being smaller than a length of the spot around the point. A in a direction of the displacement.
0 Assignments
0 Petitions
Accused Products
Abstract
A measuring device and method are disclosed for parameter distribution measurement over the entire surface of sheet-like objects. The parameters of primary interest are thickness and permeability profiles. The device includes a parameter measuring unit a coordinate measuring unit and a synchronization unit to control operation of the parameter measuring unit and the coordinate measuring unit. The coordinate measuring unit determines the measuring device position on two-dimensional surface using image correlation analysis. The measuring device further comprises a platform for its movement in the plane of the sheet-like object.
3 Citations
20 Claims
-
1. A measuring device for measuring a spatial distribution of at least one parameter of a sheet-like object, comprising:
-
a parameter measuring unit for measuring a parameter at least at a point A and a point B on an object surface, a coordinate measuring unit for measuring a coordinate at least at the point B relative to the point A on the object surface, the coordinate measuring unit being connected to a digital signal processing unit, the coordinate measuring, unit performing the coordinate measuring by determining a correlation between a first image of a spot around the point A at a time T1 and a second image of a spot around the point B at a time T2, the first and the second images being taken by a digital camera, a synchronization unit connected to the parameter measurement unit and to the coordinate measuring unit, the synchronization unit adapted to turn on the coordinate measuring unit simultaneously with the parameter measuring unit; moving platform to perform a displacement of at least the parameter measuring unit and the coordinate measuring unit together in any direction within the object surface, wherein the displacement consists of steps, a length of each step being smaller than a length of the spot around the point. A in a direction of the displacement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of measuring a distribution of at least one parameter of a sheet-like object, comprising:
-
positioning at least a parameter measuring unit and a coordinate measuring unit on a sheet-like object surface at a point A, sending a first signal from a synchronization unit to initiate simultaneous operation of the parameter measuring unit and the coordinate measuring unit, recording a first measured parameter in a digital signal processing unit and a first image of a spot around the point A taken by a digital camera in a buffer of the coordinate measuring unit, moving at least the parameter measuring, unit and the coordinate measuring unit in any direction within the object surface on a step distance being less than a size of the spot in a direction of a displacement, sending a second signal from a synchronization unit to initiate simultaneous operation of the parameter measuring unit and the coordinate measuring unit, recording a second measured parameter in the digital signal processing unit and a second image of a spot around the point B in the buffer, sending the first and the second images from the buffer to a digital signal processing unit, determining a first coordinate, a second coordinates and a magnitude of the displacement and the direction of the displacement by comparing a microstructure in the first and the second images, displaying in graphics at least the first and the second parameters in association with the first and the second coordinates. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification