Method and Apparatus for Measuring Properties of Board Products
AssigneeFourth Wave Pty Ltd
InventorRussell John Allan
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Abstract
An apparatus and method device for measuring at least one property of a board product, such as a paperboard product which includes a transmitter for applying a vibrational excitation to at least one region of the board product. The excitation includes a plurality of frequencies lying within a predetermined frequency range. The apparatus further includes a receiver for measuring a vibrational response of the board product to the vibrational excitation. A processor processes the measured vibrational response to obtain a frequency response of the region of the board product to the excitation, and analyses the frequency response to determine a measure of at least one property of the board product.
Claims27
A method of measuring at least one property of a board product including the steps of:
- applying a vibrational excitation to at least one region of the board product, the excitation including a plurality of frequencies lying within a predetermined frequency range;
- measuring a frequency response of said region of the board product to the excitation;
- and
- analyzing the frequency response to obtain a measure of at least one property of the board product.
An apparatus for measuring at least one property of a board product comprising:
- a transmitter arranged to apply a vibrational excitation to at least one region of the board product, said excitation including a plurality of frequencies lying within a predetermined frequency range;
- a receiver arranged to measure a vibrational response of the board product to the vibrational excitation;
- and
- a processor configured to process the measured vibrational response to obtain a frequency response of said region of the board product to said excitation, and to analyze the frequency response to determine a measure of at least one property of the board product.
The apparatus of wherein the transmitter is a contacting transmitter.
An apparatus for measuring at least one property of a board product comprising:
- a transmitting transducer having an electrical input, and which generates a vibrational excitation having a frequency determined by an applied electrical input signal;
- a receiving transducer having an electrical output, and which generates an electrical output signal corresponding with an applied vibrational excitation;
- at least one processor;
- at least one storage medium operatively coupled to the processor;
- an output peripheral interface between the processor and the electrical input of the transmitting transducer;
- and
- an input peripheral interface between the electrical output of the receiving transducer and the processor, wherein the storage medium contains program instructions for execution by the processor, said program instructions causing the processor to execute the steps of:
- directing the transmitting transducer to apply a vibrational excitation to at least one region of the board product, the excitation including a plurality of frequencies lying within a predetermined frequency range;
- measuring a frequency response of said region of the board product to the excitation, by receiving electrical signals from the receiving transducer corresponding with vibrational excitations received from the board product in response to the applied vibrational excitation;
- and
- analyzing the frequency response to obtain a measure of at least one property of the board product.
Dependencies are inferred from the claim text.