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1. WO2020109372 - METAL OR RUBBER RESONATORS FOR USE IN MONITORING CONVEYOR BELT WEAR AND LONGITUDINAL RIP SENSOR SYSTEMS

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[ EN ]

CLAIMS

What is claimed is:

1. A system for detecting one or more properties of a rubber product, the system comprising:

an antenna configured to obtain antenna measurements of an embedded conductive resonator, wherein the dipole antenna is and positioned in one or more positions proximate to the embedded conductive resonator; and

circuitry configured to determine one or more resonator properties based on the antenna measurements, wherein the one or more resonator properties include a change in resonance frequency.

2. The system of claim 1 , wherein the one or more resonator properties include dielectric characteristics and an increase in the resonance frequency.

3. The system of claim 1 , wherein the circuitry is configured to determine

characteristics of the rubber product based on the determined one or more resonator properties, prior resonance information, resonator position and resonator identification information.

4. The system of claim 3, wherein the determined characteristics of the rubber product comprise one or more of temperature, compound aging, damage, wear and rip.

5. The system of claim 3, wherein the prior resonance information comprises previous antenna measurements for the conductive resonator.

6. The system of claim 3, wherein the prior resonance information comprises previous determined characteristics of the rubber product.

7. The system of claim 3, wherein the resonator identification information includes a location on a belt and an assigned property to monitor.

8. The system of any one of claims 1 -7, wherein the conductive resonator is substantially straight across a lateral direction of a belt.

9. The system of any one of claims 1 -7, wherein the conductive resonator has a sinusoidal shape or a spring shape that facilitate extension and/or compression of the conductive resonator.

10. The system of any one of claims 1 -7, wherein the conductive resonator comprises a non-conductive sheath surrounding a conductive element.

1 1 . The system of claim 10, wherein the conductive element comprises a carbon nano-tube conductive element.

12. The system of any one of claims 1 -7, wherein the conductive resonator is associated with a rubber product and the circuitry is configured to determine wear of the rubber product based on the measured resonance frequency of the conductive resonator.

13. The system of any one of claims 1 -7, wherein the rubber product is one of a group subject to wear, such as those comprising a chute liner, a skirt board, a scraper, a plow, a rubber lagging and a tire tread.

14. The system of any one of claims 1 -7, wherein the antenna is a dipole antenna.

15. The system of claim 1 , wherein the conductive resonator has a length based on a belt width and a loss of delta Fr at a fixed bandwidth indicates a rip in a conveyor belt.

16. The system of claim 1 , wherein the conductive resonator comprises a plurality of fixed length resonators having an overlap and cover a belt width, wherein the plurality of fixed length resonators facilitate wear detection and rip detection based on a loss of delta Fr at a fixed bandwidth and/or a shift of delta Fr at the fixed bandwidth.

17. A system utilizing a conductive core to determine wear, the system comprising: a product having one or more rubber containing product layers;

a rubber conductive core proximate to the one or more product layers; and

a wear monitoring arrangement having an active antenna and configured to measure a resonance frequency of the rubber conductive core and to determine parameters of the product based on the measured frequency.

18. The system of claim 17, wherein the product includes an embedded circuit to transmit data during use of the product, wherein the transmitted data includes wear information.

19. The system of claim 17, wherein the product includes radio-frequency identification (RFID) circuitry to generate electromagnetic fields to transmit data, wherein the transmitted data includes wear information.

20. The system of claim 17, wherein the product is a conveyor belt.

21 . The system of claim 17, wherein the product comprises a plurality of conductive resonators disposed at regular locations and coupled to the wear monitoring arrangement and wherein the plurality of conductive resonators are arranged across a belt width of the product and the arrangement includes overlapping regions.

22. The system of claim 17, wherein the active antenna is a dipole antenna.

23. A method of detecting properties of a rubber product, the method comprising: measuring a dipole field proximate to a conductive resonator by an antenna to obtain antenna measurements;

determining a resonance frequency based on the antenna measurements; and determining the one or more properties based on the resonance frequency and one or more previous resonance frequencies associated with the rubber product and the conductive resonator.

24. The method of claim 23, wherein the one or more properties include wear and rip.

25. The method of claim 23, wherein determining the one or more properties is further based on location information of the conductive resonator within the rubber product and the location information is received by way of a radio frequency identification (RFID) circuitry located within the rubber product.