Position referenced data for monitoring and controlling

• US 5,742,915 A
• Filed: 12/13/1995
• Issued: 04/21/1998
• Est. Priority Date: 12/13/1995
• Status: Expired due to Fees

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Stafford, Darrell E.
• Primary Examiner(s): Chin, Gary
• Application Number:
  US08/573,216
• Time in Patent Office: 860 Days
• Field of Search: 364/443, 364/424.034, 364/424.035, 364/424.038, 364/424.039, 364/424.04, 364/449.1, 364/449.7, 340/438, 340/439
• US Class Current: 455/456.1
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/085 using electronic data carriers
• CPC Class Codes: G08G 1/20 Monitoring the location of vehicles belonging to a group, e.g. fleet of vehicles, countable or determined number of vehicles

Abstract

A system and method for recording the time and position of a machine during the occurrence of an event. The system includes means to determine the operating characteristics of the machine, means to determine a set of operating parameters of the machine, means to detect a significant event including a deviation in operating parameters, means to determine the time of occurrence and the geographic location at the time of occurrence, means to determine a level of significance of a deviation, means to store the information im memory, and means to transmit the information to a remote location.

Claims

1. A system for recording the time and position of a machine during an occurrence of an event, comprising:

means for sensing operating characteristics of said machine;

means for receiving said operating characteristics, responsively determining a set of operating parameters, and detecting a deviation in said operating parameters of said machine;

means for determining a time of occurrence of said deviation;

means for determining a geographic location of said machine at said time of occurrence;

means for determining a level of significance of said deviation from one of three levels of significance, including a level one event, a level two event, and a level three event;

means for storing said deviation, said time of occurrence, said geographic location, and said level of significance in memory; and

means for transmitting said deviation, said time of occurrence, and said geographic location to a remote location.

2. A system, as set forth in claim 1, wherein said deviation is defined as when a value of an operating parameter exceeds a predetermined limit.

3. A system, as set forth in claim 1, wherein said means for detecting a deviation includes a microprocessor located on said machine.

4. A system, as set forth in claim 1, wherein said transmitting means transmits said level of significance to said remote location if said level of significance equals said level two event.

5. A system, as set forth in claim 1, wherein said transmitting means transmits said level of significance to said remote location if said level of significance equals said level three event.

6. A system, as set forth in claim 5, wherein the occurrence of said level three event responsively causes said machine to shut down.

7. A system, as set forth in claim 1, wherein said transmitting means transmits said deviation, said time of occurrence, and said geographic location in response to said level of significance being equal to one of said level two event and said level three event.

8. A system, as set forth in claim 7, wherein said means for transmitting includes a long-range radiofrequency (RF) link.

9. A system, as set forth in claim 8, wherein said transmitting means transmits said deviation, said time of occurrence, and said geographic location immediately after an occurrence of one of said level two event and said level three event.

10. A system, as set forth in claim 1, wherein at least one of said operating parameters is equal to a corresponding at least one of said operating characteristics.

11. A system, as set forth in claim 1, wherein said means for determining a set of operating parameters calculates at least one of said operating parameters as a function of at least one of said operating characteristics.

12. A system, as set forth in claim 1, wherein:

at least one of said operating parameters is equal to a corresponding at least one of said operating characteristics; and

said means for determining a set of operating parameters calculates at least one other of said operating parameters as a function of at least one of said operating characteristics.

13. A system, as set forth in claim 1, wherein said means for determining a geographic location includes a Global Positioning Satellite (GPS) System.

14. A system, as set forth in claim 1, wherein said means for transmitting includes a direct connect link to said memory.

15. A system, as set forth in claim 14, wherein said means for transmitting transmits said deviation, said time of occurrence, and said geographic location over said direct connect link as the result of a query command.

16. A system, as set forth in claim 1, wherein said means for transmitting includes a short-range wireless link.

17. A system, as set forth in claim 16, wherein said means for transmitting transmits said deviation, said time of occurrence, and said geographic location as said machine approaches a predetermined reporting station.

18. A method for recording the time and position of a machine during an occurrence of an event, including the steps of:

determining operating characteristics of said machine;

receiving said operating characteristics and responsively determining a set of operating parameters of said machine;

detecting a deviation of said operating parameters;

determining a time of occurrence of said deviation;

determining a geographic location of said machine at said time of occurrence;

determining a level of significance of said deviation from one of three levels of significance, including a level one event, a level two event, and a level three event;

storing said deviation, said time of occurrence, said geographic location, and said level of significance in memory; and

transmitting said deviation, said time of occurrence, and said geographic location to a remote location.

19. A method, as set forth in claim 18, wherein the step of determining said level of significance is performed by a microprocessor located on said machine.

20. A method, as set forth in claim 18, wherein at least one of said operating parameters is equal to a corresponding at least one of said operating characteristics.

21. A method, as set forth in claim 18, wherein said step of determining a set of operating parameters includes the step of calculating at least one of said operating parameters as a function of at least one of said operating characteristics.

22. A method, as set forth in claim 18, wherein at least one of said operating parameters is equal to a corresponding at least one of said operating characteristics, and said step of determining a set of operating parameters includes the step of calculating at least one other of said operating parameters as a function of at least one of said operating characteristics.

23. A method, as set forth in claim 18, wherein the step of determining said time of occurrence is performed by reading a clock signal from a Global Positioning Satellite (GPS) System.

24. A method, as set forth in claim 18, wherein the step of storing is performed by a microprocessor located on said machine.