Weight distribution monitor

• US 6,363,331 B1
• Filed: 12/09/1998
• Issued: 03/26/2002
• Est. Priority Date: 12/09/1998
• Status: Expired due to Term

• Current Assignee: Meritor Heavy Vehicle Systems, LLC (Meritor, Inc. (Nevada))
• Original Assignee: Meritor Heavy Vehicle Systems, LLC (Meritor, Inc. (Nevada))
• Inventors: Kyrtsos, Christos
• Primary Examiner(s): Hoff, Marc S.
• Assistant Examiner(s): VO, HIEN XUAN
• Application Number:
  US09/207,796
• Time in Patent Office: 1,203 Days
• Field of Search: 702/175, 702/173, 702/174, 702/42, 702/41, 702/101, 701/50, 701/124, 177/1, 177/25.13, 177/136
• US Class Current: 702/175
• CPC Class Codes: B60G 2300/02 Trucks; Load vehicles
• CPC Class Codes: B60G 2400/60 Load
• CPC Class Codes: G01G 19/08 for incorporation in vehicles

Abstract

A method of monitoring the weight distribution on a vehicle includes measuring characteristic values of axles, comparing the measured values with expected values, and when the measured values differ from the expected values, sending warning signals that the vehicle may be experiencing a problem. The method of monitoring the weight distribution on a vehicle is used to determine the weight shift of cargo on the vehicle. The present invention allows the driver to check the weight distribution on the vehicle while operating the vehicle. Characteristic values include any value of the axles that are indicative an effect of weight on the vehicle. Such characteristic values may include acceleration, deceleration, stress, strain, and, of course, weight. Detectors measure the characteristic values on axles of a vehicle and send value signals to a control which receives the value signals, performs computations based on the measured values, and compares the computations with expected values of the axles. The control sends warning signals to a display, when the measured values differ from the expected values.

Claims

1. A method of monitoring weight distribution of axles on a vehicle comprising:

a. measuring a characteristic value of said axles of said vehicle;

b. comparing said measured value with an expected value; and

c. sending a signal indicating that said axles may be experiencing a problem relating to a potential shift in the weight distribution on said vehicle, based upon the comparison in step (b).

2. A method as in claim 1, wherein said characteristic value is a value of said axles indicative of weight on said vehicle.

3. A method as in claim 1, wherein said measured value is a plurality of measurements spaced over time on each axle of said vehicle.

4. A method as in claim 1, wherein said expected value is determined when the vehicle is initially loaded.

5. A method as in claim 1, wherein said signal is sent when said measured value differs from said expected value.

6. A method as in claim 1, wherein said characteristic value is a weight value.

16. A method as set forth in claim 1, wherein the vehicle is loaded with a plurality of cargo items arranged in a certain fashion prior to steps A-C.

17. A method as set forth in claim 16, wherein the potential shift in the weight distribution will occur as the cargo items move in their arrangement within the vehicle.

7. A method of monitoring weight distribution on a vehicle comprising:

a. providing a detector, a control, and a display;

b. measuring a characteristic value of axles of the vehicle with said detector;

c. sending value signals of said measured value to said control;

d. receiving said value signals with said control;

e. performing computations of said value signals;

f. comparing the computations with an expected value of said axles; and

g. sending warning signals to said display that there may be a problem relating to shift in weight distribution, when said measured weight differs from said expected value of said axles.

8. A method as in claim 7, wherein said measured value includes a plurality of characteristic values of said axles.

9. A method as in claim 7, wherein said characteristic value is a weight value.

10. A method as in claim 7, wherein said characteristic value is an acceleration value.

11. A method as in claim 7, wherein said characteristic value is a deceleration value.

12. A method as in claim 7, wherein said characteristic value is a stress value.

13. A method as in claim 7, wherein said characteristic value is a strain value.

14. A method as in claim 7, wherein said expected value is determined when the vehicle is initially loaded.

18. A method as set forth in claim 7, wherein the vehicle is loaded with a plurality of cargo items arranged in a certain fashion prior to steps B-G.

19. A method as set forth in claim 18, wherein the potential shift in weight distribution will occur as the cargo items move in their arrangement within the vehicle.

15. A vehicle weight distribution diagnostic system comprising:

a. at least one detector connected to an axle of a vehicle for measuring a value indicative of weight on said axle;

b. a control in communication with said at least one detector for comparing said measured value with an expected value of said axle; and

c. a display in communication with said control for indicating that there may be a problem with weight distribution on said vehicle.

20. A vehicle weight distribution diagnostic system as set forth in claim 15, wherein the vehicle is loaded with a plurality of cargo items arranged in a certain fashion, and the weight distribution problem relates to a shift in that arrangement.