Electronic controller having automatic self-configuration capabilities

• US 6,175,770 B1
• Filed: 12/31/1997
• Issued: 01/16/2001
• Est. Priority Date: 12/31/1997
• Status: Expired due to Fees

• Current Assignee: Parker Hannifin Customer Support, Inc.
• Original Assignee: Dana Corporation (Dana, Inc.)
• Inventors: Bladow, Craig W.
• Primary Examiner(s): Grant, William
• Assistant Examiner(s): Rapp, Chad
• Application Number:
  US09/001,305
• Time in Patent Office: 1,112 Days
• Field of Search: 700/86, 700/2, 700/3, 700/82, 700/11, 713/100, 713/1, 714/10, 714/12, 714/13
• US Class Current: 700/2
• CPC Class Codes: G05B 19/0421 Multiprocessor system
• CPC Class Codes: G05B 2219/2212 All processors are loaded with same program, only part of program is used
• CPC Class Codes: G05B 2219/25097 Detect control panel connected, select corresponding program and parameters

Abstract

A network of electronic controllers adapted for controlling operation of a plurality of output devices. Each of the controllers is programmed with an algorithm which causes the controller to analyze its external connections to identify its assigned tasks and functions, thereby allowing the controller to automatically configure itself for use. Each of the controllers is programmed with instructions for performing the assigned tasks and functions of all of the controllers.

Claims

1. A network of electronic controllers comprising a plurality of electronic controllers electrically connected to one another, wherein each of said controllers is programmed with an algorithm which causes said controller to analyze external connections of said controller to identify assigned tasks and functions of said controller, thereby allowing said controller to automatically configure itself for use, and wherein each of said controllers is programmed with instructions for performing assigned tasks and functions of all of said controllers, wherein updated instructions for performing assigned tasks and functions of all of said controllers are automatically loaded from a new controller which is added to said network into said remaining controllers.

2. The network defined in claim 1 wherein said controllers are interchangeable within said network.

3. The network defined in claim 1 wherein said instructions for performing assigned tasks and functions of all of said controllers are automatically loaded into a new controller which is added to said network from said remaining controllers.

4. The network defined in claim 1 wherein said controllers are adapted to determine when one of said controllers loses memory, and said controllers are adapted to load said instructions for performing assigned tasks and functions of all of said controllers into said controller with lost memory.

5. The method defined in claim 2 wherein said output devices are hydraulically actuated output devices on a vehicle.

6. The network defined in claim 1 wherein said external connections include connections to devices selected from input devices and output devices, and combinations thereof.

7. The network defined in claim 6 wherein said algorithm causes said controller to determine the number of said devices connected to said controller.

8. The network defined in claim 6 wherein said algorithm causes said controller to analyze voltage levels of said devices connected to said controller.

9. The network defined in claim 1 wherein said algorithm causes said controller to analyze whether a display device is connected to said controller.

10. A network of electronic controllers comprising a plurality of electronic controllers electrically connected to one another, wherein each of said controllers is programmed with an algorithm which causes said controller to analyze external connections of said controller to identify assigned tasks and functions of said controller, thereby allowing said controller to automatically configure itself for use, and wherein each of said controllers is programmed with instructions for performing assigned tasks and functions of all of said controllers, wherein said controllers are adapted to determine when one of said controllers loses memory, and said controllers are adapted to load said instructions for performing assigned tasks and functions of all of said controllers into said controller with lost memory.

11. The network defined in claim 10 wherein said controllers are interchangeable within said network.

12. The network defined in claim 10 wherein said instructions for performing assigned tasks and functions of all of said controllers are automatically loaded into a new controller which is added to said network from said remaining controllers.

13. The network defined in claim 10 wherein updated instructions for performing assigned tasks and functions of all of said controllers are automatically loaded from a new controller which is added to said network into said remaining controllers.

14. The method defined in claim 10 wherein said output devices are hydraulically actuated output devices on a vehicle.

15. The network defined in claim 10 wherein said external connections include connections to devices selected from input devices and output devices, and combinations thereof.

16. The network defined in claim 15 wherein said algorithm causes said controller to determine the number of said devices connected to said controller.

17. The network defined in claim 15 wherein said algorithm causes said controller to analyze voltage levels of said devices connected to said controller.

18. The network defined in claim 10 wherein said algorithm causes said controller to analyze whether a display device is connected to said controller.

19. A method of selecting one of a plurality of operating programs stored in an electronic controller for execution, said method comprising the steps of:

(a) providing an electronic controller including a memory, a plurality of input ports adapted to be selectively connected to respective input sources, a plurality of output ports adapted to be selectively connected to respective output devices, and a plurality of sensing ports adapted to receive signals representing the presence of any of the input sources connected to the input ports or any of the output devices connected to the output ports;

(b) storing a plurality of operating programs in the memory of the electronic controller;

(c) sampling the signals supplied to the sensing ports; and

(d) selecting one of the plurality of operating programs stored in the memory of the electronic controller for execution from the sampled signals.

20. The method defined in claim 19 wherein said step (d) is performed by determining the number of the input sources and the output devices connected to the sensing ports.

21. The method defined in claim 19 wherein said step (d) is performed by analyzing voltage levels at the sensing ports.

22. The method defined in claim 19 wherein said step (d) is performed by determining whether a display device is connected to the sensing ports.