Diagnostic and control unit for power machine

• US 6,493,616 B1
• Filed: 08/13/1999
• Issued: 12/10/2002
• Est. Priority Date: 08/13/1999
• Status: Expired due to Term

• Current Assignee: Clark Equipment Company (Doosan Enerbility Company Limited)
• Original Assignee: Clark Equipment Company (Doosan Enerbility Company Limited)
• Inventors: Rossow, Scott R., Brandt, Kenneth A.
• Primary Examiner(s): Nguyen, Tan
• Assistant Examiner(s): Tran, Dalena
• Application Number:
  US09/374,060
• Time in Patent Office: 1,215 Days
• Field of Search: 701/29, 701/30, 701/33, 701/35, 701/50, 701/36, 701/2, 701/110, 701/115, 701/113, 707/203, 712/37, 374/14, 172/8, 172/9, 172/4.5, 123/179.3, 123/179.2, 341/176
• US Class Current: 701/29
• CPC Class Codes: E02F 9/205 Remotely operated machines, e.g. unmanned vehicles E02F3/8866 takes precedence
• CPC Class Codes: E02F 9/24 Safety devices , e.g. for preventing overload E02F9/226 takes precedence
• CPC Class Codes: E02F 9/26 Indicating devices E02F5/145 takes precedence
• CPC Class Codes: F15B 21/08 Servomotor systems incorporating electrically operated control means F15B21/02, F15B21/065 take precedence
• CPC Class Codes: G05B 19/0426 Programming the control sequence
• CPC Class Codes: G05B 19/0428 Safety, monitoring G05B19/0423 takes precedence

Abstract

A diagnostic and control unit allows a field technician to unlock and monitor the operation of a power machine, perform diagnostics on the power machine or modify the operating parameters of the power machine without bringing the power machine to a service station or back to the factory. The diagnostic and control unit illustratively includes a remote start and control interface, and a controller. The remote start and control interface receives inputs for unlocking the operation of one or more the hydraulic functions on the power machine.

Claims

1. A method of changing operational characteristics of a power machine having an electronic machine controller and machine memory storing information accessible by the machine controller, the method comprising:

providing a remote controller, remote from the machine controller;

coupling the remote controller to the machine controller;

operating at least one hydraulic mechanical function of the power machine using the remote controller; and

loading new information into the machine memory from the remote controller.

2. The method of claim 1 wherein loading new information comprises:

establishing communication between the remote controller and the machine controller;

determining whether the information in the machine memory is to be modified; and

if so, automatically modifying the information in the machine memory with the new information.

3. The method of claim 1 wherein loading new information comprises:

obtaining a predefined new information set based on previous operation of the power machine; and

loading the predefined new information set into the machine memory from the remote controller.

4. The method of claim 1 and further comprising:

performing diagnostic operations on the power machine with the remote controller; and

wherein loading comprises obtaining the new information based on the diagnostic operations and loading the new information into the machine memory through the remote controller.

5. The method of claim 1 and further comprising:

retrieving and displaying current information; and

providing a user selectable display element corresponding to an operational characteristic and which, when selected by the user, configures the remote controller to accept a new information value from the user.

6. The method of claim 1 wherein loading new information comprises:

loading a new software algorithm into the machine memory.

7. The method of claim 1 wherein loading new information comprises:

loading a new operational parameter into the machine memory.

8. The method of claim 1 wherein coupling comprises:

establishing a wireless connection between the remote controller and the machine controller.

9. The method of claim 1 wherein loading new information comprises:

transferring the new information from a floppy disc accessible by the remote controller to the machine memory.

10. A method of monitoring operation of a power machine having a machine controller, controlling certain functions on the power machine, and machine memory storing information accessible by the machine controller, the method comprising:

providing a remote controller, remote from the machine controller;

coupling the remote controller to the machine controller;

providing a signal to the machine controller from the remote controller to unlock a hydraulic mechanical function of the power machine;

exercising the hydraulic mechanical function; and

monitoring operation of the hydraulic mechanical function.

11. The method of claim 10 wherein the hydraulic mechanical function is lockable by a hydraulic lock valve, and wherein providing a signal comprises:

providing an unlock signal to the machine controller, the machine controller controlling the hydraulic lock valve to unlock the hydraulic mechanical function based on the unlock signal.

12. The method of claim 10 wherein the remote controller includes a display device and wherein monitoring comprises:

displaying information indicative of operation of the hydraulic mechanical function on the display device.

13. The method of claim 12 and further comprising:

providing an actuation signal from the remote controller to the machine controller, the actuation signal being indicative of a requested actuation; and

displaying information indicative of the actuation signal and indicative of a status of the requested actuation on the display device.

14. The method of claim 13 wherein providing an actuation signal comprises:

displaying user selectable display elements, each being indicative of a requested actuation; and

providing the actuation signal based on user selection of an associated one of the user selectable display elements.

15. A method of monitoring operational characteristics of a power machine having a machine controller and a machine memory, the machine controller controlling operation of certain functions of the power machine, the method comprising:

providing a remote controller, remote from the machine controller, with an associated display device;

coupling the remote controller to the machine controller;

operating at least one hydraulic mechanical function of the power machine using the remote controller;

retrieving information from the machine memory indicative of the operational characteristics of the power machine; and

displaying information indicative of the retrieved operational characteristics.

16. The method of claim 15 wherein the operational characteristics include current operating parameters stored in the machine memory and wherein displaying comprises displaying the current operating parameters.

17. The method of claim 15 wherein the operational characteristics comprise a plurality of most recent service conditions detected, the service conditions being indicative of detected conditions for which service is to be performed, and wherein displaying comprises:

displaying the plurality of most recent service conditions.

18. The method of claim 17 wherein displaying the plurality of most recent service conditions comprises:

displaying the plurality of most recent service conditions in a user navigable list.

19. The method of claim 18 wherein the power machine includes an operation clock which indicates an elapsed time of machine operation, and further comprising:

displaying an elapsed time at which each of the most recent service conditions occurred, along with its associated service condition, in the user navigable list.

20. The method of claim 18 wherein the power machine includes an apparition clock which indicates an elapsed time of machine operation and wherein displaying warning information includes:

displaying an indication of a warning condition, an elapsed time at which the warning condition occurred, and a duration of the warning condition.

21. The method of claim 20 wherein displaying an indication of a warning condition comprises:

displaying a number of times that the warning conditions occurred.

22. The method of claim 15 wherein displaying comprises:

displaying information indicative of options currently installed on the power machine.

23. A service tool system for use in servicing a power machine having a machine controller controlling certain operations of the power machine, the system comprising:

a remote start controller, remote from the machine controller and having a machine controller interface configured to be coupled to the machine controller;

a user input mechanism, coupled to the remote start controller, and configured to receive a user input and provide an input signal to the remote start controller, the remote start controller configured to provide a remote start signal to the machine controller interface based on the input signal; and

a diagnostic controller interface coupled to the remote start controller and configured to be coupled to a diagnostic controller and further configured to provide a communicative interface through which operational characteristics of the power machine can be monitored and changed.

24. The service tool system of claim 23 and further comprising:

a diagnostic controller coupled to the diagnostic controller interface.

25. The service tool system of claim 24 and further including a display device coupled to the diagnostic controller and wherein the diagnostic controller is configured to display operational characteristics of the power machine to which the remote start controller is coupled.

26. The service tool system of claim 24 wherein the diagnostic controller is configured to provide information to the machine controller through the diagnostic controller interface, to modify operation of the power machine.

27. The service tool system of claim 26 wherein the diagnostic controller is configured to provide information to the machine controller to enable the machine controller to control the power machine to operate a predetermined attachment.

28. The service tool system of claim 26 wherein the diagnostic controller is configured to provide information to the machine controller to automatically modify controll algorithms used by the machine controller.

29. The service tool system of claim 26 wherein the dagnostic controller is configured to provide information to the machine controller to modify operational parameters used by the machine controller.

30. The service tool system of claim 23 wherein the user input mechanism includes unlock inputs configured to provide, when select by the user, an unlock signal to the remote start controller, the remote start controller providing a function unlock signal on the machine controller interface, base on the unlock signal, to unlock an associated function on the power machine.