METHOD OF EVALUATING STRUCTURAL INTEGRITY OF A VEHICLE COMPONENT WITH RADIO FREQUENCY IDENTIFICATION TAGS AND SYSTEM FOR SAME

• US 20130021138A1
• Filed: 07/20/2011
• Published: 01/24/2013
• Est. Priority Date: 07/20/2011
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Ezzat, Hesham A., Wang, Pei-Chung, Cannon, Marcel R., Wang, Kangping
• Application Number:
  US13/186,834
• Publication Number:
  US 20130021138A1
• Time in Patent Office: Days
• US Class Current: 340/10.1
• CPC Class Codes: G01M 5/0033 by determining damage, crack or wear
• CPC Class Codes: G07C 2205/02 using a vehicle scan tool
• CPC Class Codes: G07C 5/08 Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time

Abstract

A method of evaluating the structural integrity of a component such as a vehicle component includes receiving signals from radio frequency identification (RFID) tags embedded in the component. The signals received are then compared to stored data indicative of sets of signals and that is correlated with different physical conditions of the component. A level of structural integrity of the component is then determined based on the comparison. The RFID tags may be wirelessly activated by an RFID reader to generate the signals. The comparison and determination may be carried out by a processor of an RFID reader. A system for evaluating the structural integrity of a component is also provided.

Claims

1. A method of evaluating structural integrity of a component comprising:

receiving signals from radio frequency identification (RFID) tags attached to the component;

comparing the signals received to stored data indicative of sets of signals that are correlated with different physical conditions of the component; and

determining a level of structural integrity of the component based on said comparing.

2. The method of claim 1, wherein the component is a first type of component, and further comprising:

receiving input information indicative of the component being the first type of component; and

selecting the stored data from stored data indicative of signals received from a plurality of different types of components; and

wherein said selecting is based on the input information received.

3. The method of claim 1, wherein said receiving, said comparing and said determining are carried out by an RFID reader, and further comprising:

wirelessly activating the RFID tags by scanning the component with the RFID reader remote from the vehicle component, whereby the RFID tags are powered by the RFID reader to generate the signals received by the RFID reader.

4. The method of claim 1, wherein stored data indicative of one of said sets of signals corresponds with a preferred physical condition of the component.

5. The method of claim 1, wherein the component has layers of fiber-reinforced composite material and the RFID tags are dispensed in resin between the layers of the composite material such that the RFID tags are embedded in the component.

6. The method of claim 1, wherein the vehicle component has a joint bonded with adhesive and the RFID tags are dispensed in the adhesive at the joint such that the RFID tags are embedded in the component.

7. The method of claim 6, wherein the physical condition is an amount of coverage of the adhesive in the joint.

8. The method of claim 1, further comprising:

providing an output indicative of the physical condition determined.

9. A method of evaluating structural integrity of a component comprising:

scanning the component with a radio frequency identification (RFID) reader to activate RFID tags embedded in the component such that the RFID tags generate signals received by the RFID reader; and

determining further processing of the component according to a level of structural integrity of the component indicated by the RFID reader;

wherein the RFID reader indicates a level of structural integrity by comparing the signals received from the activated RFID tags to stored data indicative of sets of signals that are correlated with different levels of structural integrity of the component.

10. The method of claim 9, wherein the component is a first type of component, and further comprising:

embedding RFID tags in multiple components of the first type such that the RFID tags are arranged in a substantially identical initial spatial arrangement in each of said components;

scanning one of said components of the first type when said RFID tags are in said initial spatial arrangement and storing data indicative of signals received from said RFID tags in said initial spatial arrangement to establish a baseline set of signals;

damaging each of said multiple components by a different respective amount to vary the spatial arrangement of the RFID tags;

scanning each of said damaged multiple components with the RFID reader to receive additional signals from each of said damaged components; and

storing data indicative of the additional signals received from each of said damaged components in a database such that the data stored corresponds with the different respective amounts of damage.

11. The method of claim 10, wherein the database further includes stored data indicative of sets of signals corresponding with different respective amounts of damage of different types of components, and further comprising:

selecting a setting of the RFID reader corresponding to the first type of component from a plurality of settings each corresponding with different types of components.

12. The method of claim 9, wherein the component is a first type of component having a joint bonded with adhesive;

wherein the RFID tags are in the adhesive at the joint, and further comprising;

embedding RFID tags in multiple components of the first type such that the RFID tags are arranged in a different initial spatial arrangement in each of said components of the first type;

scanning each of said components of the first type; and

storing data indicative of signals received from said RFID tags in the multiple components of the first type to establish a database of sets of signals corresponding with the different spatial arrangements of the RFID tags.

13. The method of claim 9, wherein the component has layers of composite material, and further comprising:

dispensing the RFID tags in resin between the layers of the composite material.

14. The method of claim 9, wherein the component has a joint bonded with adhesive, and further comprising:

dispensing the RFID tags in the adhesive at the joint.

15. A system for evaluating structural integrity of a vehicle component comprising:

a vehicle component having radio frequency identification (RFID) tags embedded within the vehicle component;

wherein each RFID tag is configured to emit a signal indicative of a respective position of the RFID tag within the vehicle component; and

an RFID reader configured to wirelessly activate the RFID tags and having a processor configured to;

compare the signals received to stored data indicative of sets of signals that are correlated with different physical conditions of the vehicle component; and

determine a level of structural integrity of the vehicle component based on comparing the signals received to the stored data.

16. The system of claim 15, wherein the vehicle component has layers of composite material and the RFID tags are dispensed in resin between the layers of the composite material.

17. The system of claim 15, wherein the vehicle component has a joint bonded with adhesive and the RFID tags are dispensed in the adhesive at the joint.

18. The system of claim 15, wherein vehicle component is a first type of vehicle component;

and wherein the RFID reader has;

a memory with a database of data indicative of the sets of signals for the first type of vehicle components and data indicative of additional sets of signals for other types of vehicle components having embedded RFID tags;

wherein the data indicative of additional sets of signals is correlated with different levels of structural integrity of the respective other types of vehicle components; and

an input mechanism configured to receive input information indicative of the vehicle component being of the first type.