Wireless gateway apparatus and method of bridging data between vehicle based and external data networks

• US 7,869,906 B2
• Filed: 01/08/2007
• Issued: 01/11/2011
• Est. Priority Date: 01/08/2007
• Status: Expired due to Fees

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Franks, Donald, Hashim, Hasdi R., Louch, Robert, Moorhead, Brian C.
• Primary Examiner(s): Tran; Khoi
• Assistant Examiner(s): Amin; Bhavesh V
• Application Number:
  US11/620,760
• Publication Number:
  US 20080167758A1
• Time in Patent Office: 1,464 Days
• Field of Search: None
• US Class Current: 701/1
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

A vehicle network gateway providing off board diagnostic and computer based devices with access to vehicle network data such as signal values and diagnostic error information. The gateway eliminating the deleterious effects of electrical loading on the vehicle network and the introduction of noise onto the vehicle network by off board devices. The gateway adapted to bridge data between the vehicle networks and a variety of external networks including conventional wireless and hardwired networks providing wireless access of vehicle diagnostic data over external networks at vehicle repair and service centers.

Claims

1. A vehicle network gateway apparatus in communication with at least one vehicle data network, the apparatus for bridging data between vehicle data networks and at least one external data network, the vehicle network gateway apparatus comprising:

a programmable processor logic system;

a memory means comprising at least one memory storage device;

computer executable code resident in the vehicle network gateway for monitoring vehicle network message traffic, receiving vehicle network messages, interpreting vehicle network messages, generating and sending vehicle network messages;

computer executable code resident in the vehicle network gateway for bi-directional bridging of vehicle message data between the at least one vehicle network and the at least one external network, wherein the bridging comprises converting messages between a vehicle network protocol and at least one external network protocol;

at least one vehicle network interface device for interfacing to at least one vehicle data network, the at least one vehicle network interface in communication with the programmable processor logic system; and

at least one external network interface device for interfacing to at least one external data network, the at least one external network interface in communication with the programmable processor logic system;

computer executable code resident in the vehicle network gateway for authenticating external network access to the vehicle network gateway, wherein off board systems that are not authenticated are limited to read only access to data through the gateway;

a vehicle network message database stored to the memory means, the message database defining vehicle network messages, nodes, signal and signal range parameters; and

computer executable code resident in the vehicle network gateway for accumulating real-time statistics of at least a portion of networked vehicle signals, comprising the steps of;

reading a configured list of messages and signals;

monitoring the vehicle networks for configured messages;

updating message statistics;

extracting signals from each message;

calculating signal statistics; and

continuing at the monitoring step.

2. The vehicle network gateway apparatus of claim 1, wherein the real-time statistics comprise:

signal minimum value, maximum value, average value, last value, standard deviation, signal in-range count, signal out-of-range count, signal error value count, and signal no value count.

6. The vehicle network gateway apparatus of claim 1, further comprising:

a satellite navigation system receiver interfaced to and in communication with the vehicle network gateway, wherein the vehicle network gateway has real-time access to vehicle position coordinates.

7. The vehicle network gateway apparatus of claim 1, wherein at least one vehicle data network is a multicast shared serial bus network.

8. The vehicle network gateway apparatus of claim 1, wherein

at least one external network is a wireless LAN network;

and

wherein the apparatus further comprises at least one wireless network interface, wherein the interface includes wireless RF transmitter/receiver means and protocol support means.

9. The vehicle network gateway apparatus of claim 1, wherein

at least one external network is accessed via a line of sight visible/invisible light data carrier link;

and

wherein the apparatus further comprises at least one line of sight visible/invisible light data interface.

10. The vehicle network gateway apparatus of claim 1, further comprising support for a hydrogen vehicle refueling mode, comprising the steps of:

detecting that the vehicle refueling door has opened;

initiating the refueling mode;

transmitting vehicle fuel tank charge and pressure to the refueling station;

continuing at the transmitting step until refueling has completed; and

exiting the refueling mode.

3. A vehicle network gateway apparatus in communication with at least one vehicle data network, the apparatus for bridging data between vehicle data networks and at least one external data network, the vehicle network gateway apparatus comprising:

a programmable processor logic system;

a memory means comprising at least one memory storage device;

computer executable code resident in the vehicle network gateway for monitoring vehicle network message traffic, receiving vehicle network messages, interpreting vehicle network messages, generating and sending vehicle network messages;

computer executable code resident in the vehicle network gateway for bi-directional bridging of vehicle message data between the at least one vehicle network and the at least one external network, wherein the bridging comprises converting messages between a vehicle network protocol and at least one external network protocol;

at least one vehicle network interface device for interfacing to at least one vehicle data network, the at least one vehicle network interface in communication with the programmable processor logic system; and

at least one external network interface device for interfacing to at least one external data network, the at least one external network interface in communication with the programmable processor logic system;

computer executable code resident in the vehicle network gateway for authenticating external network access to the vehicle network gateway;

wherein off board systems that are not authenticated are limited to read only access to data through the gateway;

a vehicle network message database stored to the memory means, the message database defining vehicle network messages, nodes, signal and signal range parameters; and

computer executable code resident in the vehicle network gateway for signal strobe logging of a configurable strobe logging subset of signals from a vehicle network as defined in the message database, comprising the steps of;

reading list of configured signals to be strobed and a configured delay time;

monitoring the vehicle network for messages having configured strobed signal;

extracting the strobed signal from the message, if the configured delay has not elapsed then continuing at the monitoring step;

storing the maximum, minimum, average of each strobed signal to a strobe log; and

continuing at the monitoring step, wherein the strobe log provides a detailed periodic signal value trend over time.

4. A vehicle network gateway apparatus in communication with at least one vehicle data network, the apparatus for bridging data between vehicle data networks and at least one external data network, the vehicle network gateway apparatus comprising:

a programmable processor logic system;

a memory means comprising at least one memory storage device;

computer executable code resident in the vehicle network gateway for monitoring vehicle network message traffic, receiving vehicle network messages, interpreting vehicle network messages, generating and sending vehicle network messages;

computer executable code resident in the vehicle network gateway for bi-directional bridging of vehicle message data between the at least one vehicle network and the at least one external network, wherein the bridging comprises converting messages between a vehicle network protocol and at least one external network protocol;

at least one vehicle network interface device for interfacing to at least one vehicle data network, the at least one vehicle network interface in communication with the programmable processor logic system; and

at least one external network interface device for interfacing to at least one external data network, the at least one external network interface in communication with the programmable processor logic system;

computer executable code resident in the vehicle network gateway for authenticating external network access to the vehicle network gateway, wherein off board systems that are not authenticated are limited to read only access to data through the gateway;

a vehicle network message database stored to the memory means, the message database defining vehicle network messages, nodes, signal and signal range parameters; and

computer executable code resident in the vehicle network gateway for configuring and detecting a set of vehicle network signal trigger conditions; and

computer executable trigger logging code resident in the vehicle network gateway for capturing a configurable trigger log set of selected vehicle network signals and logging at least one signal value to a trigger data log in the memory means, the trigger logging providing a memory stored context of signal values before, at the occurrence of, and for a period of time after the detection of a trigger condition, the trigger logging data useful for diagnosing vehicle problems, comprising the steps of;

reading a list of configured messages to log and trigger conditions;

monitoring vehicle networks for configured messages, if configured messages found then reading the messages;

storing the read messages to a circular data buffer, if trigger condition not met then continuing at the monitoring step;

moving messages from the circular data buffer to the triggered data log;

continuing if more data to be gathered, otherwise continuing at the monitoring step;

watching the vehicle networks for configured messages, if configured messages found then reading the messages; and

storing the read messages to a circular data buffer, if trigger condition not met then continuing at the continuing if more data step.

5. The vehicle network gateway apparatus of claim 4, wherein the signal trigger conditions comprise:

vehicle error conditions;

signals outside normal hi/low range limits; and

manual triggering by momentary contact input to the vehicle network gateway.