ASCII gateway to in-vehicle networks

• US 20100174445A1
• Filed: 12/16/2009
• Published: 07/08/2010
• Est. Priority Date: 08/28/2001
• Status: Active Grant

• Current Assignee: Dearborn Group, Inc.
• Original Assignee: Dearborn Group, Inc.
• Inventors: McClure, Robert, Such, David M., Jewell, Michael T.
• Granted Patent: US 7,984,225 B2
• Time in Patent Office: Days
• US Class Current: 701/33
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

ASCII gateway to in-vehicle system provides bi-directional translation between multiplexed motor vehicle networks and industrial control and monitoring devices. Integrated hardware and software components provide data communications between motor vehicle electronic control module networks and RS-232 serial ASCII-text capable device, for industrial control and/or industrial automation application in manufacturing or assembly operations. Communications networks (CAN, SAE or ISO protocols) implemented inside motor vehicles pass data'"'"'between electronic control modules that control operation of important vehicle components like engine, transmission and brake systems, have their messages converted to RS-232 serial ASCII-text; and from RS-232 serial ASCII-text converted to motor vehicle communications network by the system. Messages to monitor and/or control vehicle networks are generated by a serial ASCII-test capable device. Multiple vehicle protocols are supported by the system. The system translates between RS-232 serial ASCII-text message generated or received by a device and the vehicle network.

Claims

1. A system for providing data communications between a motor vehicle electronic control module network and an RS-232 serial ASCII-text capable device, said motor vehicle electronic control module network using one or more of a plurality of different protocols, the system comprising:

a microprocessor-based hardware having vehicle communications network bus circuitry for interfacing with said motor vehicle electronic control module network, said microprocessor-based hardware also having at least one port, at least connector used with said at least one port for connecting said microprocessor-based hardware with said RS-232 serial ASCII-text capable device, and programmed with software to translate communications between the vehicle communications network bus circuitry and at the at least one port, the system connected to an RS-232 serial ASCII-text capable device, said device capable of translating ASCII-text to said microprocessor-based circuitry and receiving ASCII-text from the said microprocessor-based circuitry;

wherein said micro-processor-based hardware is operable to monitor and translate messages between said plurality of protocols at the same time.

2. The system according to claim 1, wherein the vehicle electronic control module network is uses a CAN (Controller Area Network) protocol with 11-bit identifier.

3. The system according to claim 1, wherein the translated vehicle electronic control module network is uses a CAN (Controller Area Network) protocol with 29-bit identifier.

4. The system according to claim 1, wherein the vehicle electronic control module network is uses an SAE (Society of Automotive Engineers) J1939 protocol implementation of CAN.

5. The system according to claim 1, wherein the vehicle electronic control module network uses an SAE J1850 protocol.

6. The system according to claim 1, wherein the translated vehicle electronic control module network is uses an SAE J1708 protocol.

7. The system according to claim 1, wherein the translated vehicle electronic control module network is uses a GM (General Motors Corporation) UART (Universal Asynchronous Receiver/Transmitter) network.

8. The system according to claim 1, employing one of CAN (Controller Area Network) with 11-bit identifier, CAN (Controller Area Network) with 29-bit identifier, SAE (Society of Automotive Engineers) J1939 implementation of CAN, SAE J1850, SAE J1708, and GM (General Motors Corporation) UART (Universal Asynchronous Receiver/Transmitter) network, wherein the RS-232 serial ASCII-text capable device transmitting ASCII-text to and receiving ASCII-text from the system is a programmable logic controller (PLC).

9. The system according to claim 1, employing one of CAN (Controller Area Network) with 11-bit identifier, CAN (Controller Area Network) with 29-bit identifier, SAE (Society of Automotive Engineers) J1939 implementation of CAN, SAE J1850, SAE J1708, and GM (General Motors Corporation) UART (Universal Asynchronous Receiver/Transmitter) network, wherein the RS-232 serial ASCII-text capable device transmitting ASCII-text to and receiving ASCII-text from the system is a microcomputer (PC).

11. The system according to claim 1, employing one of CAN (Controller Area Network) with 11-bit identifier, CAN (Controller Area Network) with 29-bit identifier, SAE (Society of Automotive Engineers) Controller Area Network) J1939 implementation of CAN, SAE J1850, SAE J1708, and GM (General Motors Corporation) UART (Universal Asynchronous Receiver/Transmitter) network, wherein the RS-232 serial ASCII-text capable device transmitting ASCII-text to and receiving ASCII-text from the system is a device having sufficient hardware circuitry and software embedded therein to perform needed operation.

25. The system according to claim 1, wherein the one or more of a plurality of commands is selected from the group consisting of ECU fault code interrogation, communication with a remote vehicle network, vehicle maintenance status checks, trip performance, data downloads, asset control, logistics, inventory management, diagnostic support, maintenance/scheduling, and combinations thereof.

26. The system according to claim 1, said one or more of a plurality of commands further comprising parameters accessed for control over system components selected from the group consisting of engine, transmission, brakes, instrument clusters, and combinations thereof.

10. The system according to claim employing one of CAN (Controller Area Network) with 11-bit identifier, CAN (Controller Area Network) with 29-bit identifier, SAE (Society of Automotive Engineers) Network) J1939 implementation of CAN, SAE J1850, SAE J1708, and GM (General Motors Corporation) UART (Universal Asynchronous Receiver/Transmitter) network, wherein the RS-232 serial ASCII-text capable device transmitting ASCII-text to and receiving ASCII-text from the system is a handheld computer (Personal Digital Assistant, PDA).

12. A system for providing data communications between a motor vehicle electronic control module network and an RS-232 serial ASCII-text capable device, said motor vehicle electronic control module network using one or more of a plurality of different protocols, the system comprising:

a microprocessor-based hardware having vehicle communications network bus circuitry for interfacing with said motor vehicle electronic control module network, said microprocessor-based hardware also having at least one port, at least one connector used with said at least one port for connecting said microprocessor-based hardware with said RS-232 serial ASCII-text capable device, and programmed with software to translate communications between the vehicle communications network bus circuitry and the at least one port, the system connected to an RS-232 serial ASCII-text capable device, said device capable of translating ASCII-text to said microprocessor-based circuitry and receiving ASCII-text from the said microprocessor-based circuitry; and

universal asynchronous transmit and receive (UART) circuitry operable as part of said microprocessor-based hardware for providing universal asynchronous communication between said microprocessor-based hardware and said ASCII-text capable device, and between said microprocessor-based hardware and said motor vehicle electronic control network;

wherein said micro-processor-based hardware is operable to monitor and translate messages between said plurality of protocols at the same time.

13. The system according to claim 12, wherein the ASCII-text capable device is selected from the group consisting of a programmable logic controller, a microcomputer and a personal digital assistant.

14. The system according to claim 12, wherein the plurality of protocols are selected from the group consisting of SAE J1850 GM class 2 protocol, SAE J1850 Chrysler protocol, GM class 1 UART protocol, ISO 9141-2 protocol, ISO 9141-1989 protocol, ISO 9141-special protocol, SAE J2284 dual-wire CAN protocol and SAE J2411 single wire CAN protocol.

15. The system according to claim 12, further comprising a plurality of LEDs for indicating which protocol the system is converting including the pass-through mode.

16. The system according to claim 15, wherein the plurality of LEDs include at least one dual colored LEDs.

17. The system according to claim 12, wherein the one or more of a plurality of commands is selected from the group consisting of:

ECU fault code interrogation;

communication with a remote vehicle network;

vehicle maintenance status checks;

trip performance;

data downloads;

asset control;

logistics;

inventory management;

diagnostic support;

maintenance/scheduling; and

combinations thereof.

18. The system according to claim 12, said one or more of a plurality of commands further comprising parameters accessed for control over system components selected from the group consisting of engine, transmission, brakes, instrument clusters, and combinations thereof.

22. The system according to claim 17, further comprising a plurality of LEDs for indicating which protocol the system is converting including the pass-through mode.

23. The system according to claim 17, wherein the one or more of a plurality of commands is selected from the group consisting of:

ECU fault code interrogation;

communication with a remote vehicle network;

vehicle maintenance status checks;

trip performance;

data downloads;

asset control;

logistics;

inventory management;

diagnostic support;

maintenance/scheduling; and

combinations thereof.

24. The system according to claim 17, said one or more of a plurality of commands further comprising parameters accessed for control over system components selected from the group consisting of engine, transmission, brakes, instrument clusters, and combinations thereof.

19. A system for converting signals transmitted between a vehicle network and an ASCII-text external device, said vehicle network using one or more of a plurality of different protocols, said system comprising:

an RS-232 port for coupling the ASCII-text external device to the system;

universal asynchronous transmit and receive (UART) circuitry operable for providing universal asynchronous communication between said microprocessor-based hardware and said ASCII-text capable device, and between said microprocessor-based hardware and said motor vehicle electronic control network; and

circuitry responsive to signals from the vehicle network and signals from the ASCII-text external device, said circuitry converting ASCII-text signals from the ASCII-text external device to any one of the plurality of protocols that the vehicle network module may be using, and converting signals in any of the protocols from the vehicle network to ASCII-text such that said ASCII-text external device is operable to send one or more of a plurality of commands to the vehicle network and said circuitry provides communication between said ASCII-text external device and said vehicle network in more than one of said plurality of protocols, said microprocessor-based hardware being operable to monitor and translate messages between said plurality of protocols at the same time, said circuitry further including a voltage translator for voltage translating signals transmitted between the vehicle network and the ASCII-text external device.

20. The system according to claim 19, wherein the ASCII-text external device is selected from the group consisting of a programmable logic controller, a microcomputer, and a personal digital assistant.

21. The system according to claim 19, wherein the plurality of protocols are selected from the group consisting of SAE J1850 GM class 2 protocol, SAE J1850 Chrysler protocol, GM class 1 UART protocol, ISO 9141-2 protocol, ISO 9141-1989 protocol, ISO 9141-special protocol, SAE J2284 dual-wire CAN protocol and SAE J2411 single wire CAN protocol.