Monitoring system

• US 20100100338A1
• Filed: 10/31/2006
• Published: 04/22/2010
• Est. Priority Date: 10/31/2006
• Status: Active Grant

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Sundermeyer, Jeffry N., Vik, Timothy A., Forck, James A.
• Granted Patent: US 7,908,928 B2
• Time in Patent Office: Days
• US Class Current: 702/42
• CPC Class Codes: E02F 9/264 Sensors and their calibration for indicating the position of the work tool
• CPC Class Codes: E02F 9/267 Diagnosing or detecting failure of vehicles
• CPC Class Codes: G01M 17/007 Wheeled or endless-tracked vehicles G01M17/08 takes precedence
• CPC Class Codes: G01M 5/0033 by determining damage, crack or wear
• CPC Class Codes: G01M 5/0041 by determining deflection or stress

Abstract

A monitoring system is provided, which may include a structural component configured to undergo mechanical loading and a wireless node attached to the structural component. The node may include a strain sensing device configured to measure strain experienced by the structural component at the location of the node. The node may also include a processor configured to predict, based on the strain measurements, fatigue life of the structural component.

Claims

1. A monitoring system, comprising:

a structural component configured to undergo mechanical loading; and

a wireless node attached to the structural component and including;

a strain sensing device configured to measure strain experienced by the structural component at the location of the node; and

a processor configured to predict, based on the strain measurements, fatigue life of the structural component.

2. The system of claim 1, wherein the system includes a network of at least two wireless nodes, each node including:

a strain sensing device configured to take strain measurements; and

a processor configured to process information relating to the strain measurements.

3. The system of claim 2, wherein one or more of the wireless nodes are configured to wirelessly transmit information relating to the strain measurements to at least one of the other wireless nodes.

4. The system of claim 1, wherein the node is configured to wirelessly transmit, to a location remote from the node, information relating to the strain measurements.

5. The system of claim 1, wherein the node is configured to interface with a portable electronic device and transfer, to the portable electronic device, information relating to the strain measurements.

6. A method of evaluating fatigue in a structural component configured to undergo mechanical loading, comprising:

taking measurements of strain experienced by the structural component at a node attached to the structural component;

processing data collected regarding the strain measurements with a processor located at the node; and

predicting, with the processor, fatigue life of the structural component based on the strain measurements.

7. The method of claim 6, further including taking strain measurements and processing strain measurement information at two or more nodes.

8. The method of claim 7, further including wirelessly transmitting, from one or more of the wireless nodes, information relating to the strain measurements to at least one of the other wireless nodes.

9. The method of claim 6, further including wirelessly transmitting, to a location remote from the node, information relating to the strain measurements.

10. The method of claim 6, further including interfacing the node with a portable electronic device and transferring, to the portable electronic device, information relating to the strain measurements.

11. A machine, comprising:

a power source; and

a monitoring system, comprising;

a structural component configured to undergo mechanical loading; and

a node attached to the structural component and including;

a strain sensing device configured to measure strain experienced by the structural component at the location of the node; and

a processor configured to, based on the strain measurements, predict fatigue life of the structural component.

12. The machine of claim 11, wherein the system includes a network of at least two wireless nodes, each node including:

a strain sensing device configured to take strain measurements; and

a processor configured to process information relating to the strain measurements;

wherein one or more of the wireless nodes are configured to wirelessly transmit information relating to the strain measurements to at least one of the other wireless nodes.

13. The machine of claim 11, wherein the node is configured to wirelessly transmit, to a location remote from the node, information relating to the strain measurements.

14. The machine of claim 11, wherein the node is configured to interface with a portable electronic device and transfer, to the portable electronic device, information relating to the strain measurements.

15. The machine of claim 11, wherein the machine includes more than one structural component which is monitored by the monitoring system;

and

wherein the monitoring system includes more than one strain sensing device configured to monitor a structural component.