AUTOMOBILE DETECTION AND CONTROL GATEWAY INTERFACE AND METHOD THEREOF

• US 20090240383A1
• Filed: 06/03/2008
• Published: 09/24/2009
• Est. Priority Date: 03/18/2008
• Status: Active Grant

• Current Assignee: ICM Incorporated
• Original Assignee: ICM Incorporated
• Inventors: HUNG, Ching-Huang
• Granted Patent: US 8,126,606 B2
• Time in Patent Office: Days
• US Class Current: 701/1
• CPC Class Codes: B60R 25/10 actuating a signalling device
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: H04L 12/417 with deterministic access, e.g. token passing
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

An automobile detection and control gateway interface and a method thereof are provided. The automobile detection and control gateway interface is connected with a controller area network (CAN) formed by a body control module (BCM) and body devices, and pre-stores a plurality of device diagnostic commands and status diagnostic data, so that the BCM performs corresponding actions on specific body devices according to the device diagnostic commands and capture status feedback data transmitted over the CAN by the body devices, and outputs the status diagnostic data matching with the status feedback data for determining the operation status of the body devices or for the externally connected device to acquire. All the device diagnostic commands are transferred through the BCM to avoid interfering with the operation of the CAN and control the external device connected to the BCM, so as to ensure all the body devices are under control.

Claims

1. An automobile detection and control gateway interface, connected with a controller area network (CAN) formed by a body control module and a plurality of body devices, comprising:

an instruction database, for providing a plurality of device diagnostic commands corresponding to the body devices;

a status database, for providing a plurality of network identifiers and status diagnostic data corresponding to the body devices;

a central processing unit (CPU), for outputting one device diagnostic command corresponding to one body device under detection according to a format of data recorded in the instruction database and matching a data packet with the status database to output one corresponding status diagnostic data; and

a network controller, connected with the controller area network based on a communication protocol of International Standard 15765-4 (ISO 15765-4), comprising;

a transmission data register module, for recording the device diagnostic commands and sequentially outputting the device diagnostic commands over the controller area network to command the body control module to control the corresponding body devices based on the device diagnostic commands; and

a received data register module, for acquiring the network identifiers of the status database and capturing the data packets transmitted over the controller area network to match with the network identifiers, so as to output a matching data packet to the CPU.

2. The automobile detection and control gateway interface according to claim 1, further comprising a configuration module for setting a baud rate of data transmission of the network controller.

3. The automobile detection and control gateway interface according to claim 1, wherein the instruction database records a baud rate corresponding to each of the device diagnostic commands and the status database records a baud rate corresponding to each of the status diagnostic data.

4. The automobile detection and control gateway interface according to claim 1, further comprising a configuration module for setting a CAN identifier of data transmitted by the network controller and the CPU and a CAN identifier used by the CPU for obtaining the data packets and outputting the device control commands.

5. The automobile detection and control gateway interface according to claim 1, wherein the instruction database records CAN identifiers corresponding to each of the device diagnostic commands and the status database records the CAN identifiers corresponding to each of the status diagnostic data.

6. The automobile detection and control gateway interface according to claim 1, wherein each of the device diagnostic commands comprises the network identifier of one body device, a control data for the body device, and an execution time of the control data.

7. The automobile detection and control gateway interface according to claim 6, wherein the body control module establishes a direct conversation path with the body device according to the network identifier and continuously outputs the control data to the body device via the direct conversation path for a time period specified by the execution time.

8. The automobile detection and control gateway interface according to claim 1, further comprising a model switch for providing a model number, wherein the instruction database records the model number corresponding to each of the device diagnostic commands and provides at least one corresponding device diagnostic command according to the model number of the model switch and the status database records the model number corresponding to each of the status diagnostic data and provides at least one corresponding status diagnostic data based on the model number of the model switch.

9. The automobile detection and control gateway interface according to claim 8, wherein the model switch comprises a Dual In-Line Package (DIP) switch and a model database, wherein the model database comprises a plurality of model numbers and provides a corresponding model number according to a switch status of the DIP switch.

10. The automobile detection and control gateway interface according to claim 1, wherein the data packet is a status feedback data output by the body device.

11. An automobile detection and control gateway interface, connected with a controller area network formed by a body control module (BCM) and a plurality of body devices, comprising:

an instruction database, for providing a plurality of device diagnostic commands corresponding to the body devices;

a central processing unit (CPU), for outputting one device diagnostic command for one corresponding body device according to the instruction database; and

a network controller, connected with the controller area network based on a communication protocol of International Standard 15765-4 (ISO 15765-4) and outputting the device diagnostic command over the controller area network to command the body control module to control the corresponding body device according to the device diagnostic command.

12. The automobile detection and control gateway interface according to claim 11, further comprising a status database for providing a plurality of network identifiers of the body devices and status diagnostic data corresponding to the body devices, wherein the network controller further captures a data packet transmitted over the controller area network and outputs the data packet, the CPU matches the data packet with the status database to output the corresponding status diagnostic data.

13. The automobile detection and control gateway interface according to claim 11, further comprising a configuration module for setting a baud rate of data transmission of the CPU and the network controller.

14. The automobile detection and control gateway interface according to claim 11, wherein the instruction database records the baud rate corresponding to each of the device diagnostic commands.

15. The automobile detection and control gateway interface according to claim 11, wherein each of the device diagnostic commands comprises a network identifier of one body device, a control data for the body device, and an execution time of the control data.

16. The automobile detection and control gateway interface according to claim 11, further comprising a model switch for providing a model number, wherein the instruction database records the model number corresponding to each of the device diagnostic commands and provides at least one corresponding device diagnostic command according to the model number.

17. The automobile detection and control gateway interface according to claim 16, wherein the model switch comprises a Dual In-Line Package (DIP) switch and a model database, wherein the model database comprises a plurality of model numbers and provides one corresponding model number according to a switch status of the DIP switch.

18. The automobile detection and control gateway interface according to claim 11, wherein the body control module is further connected with an external device and controls an action of the external device according to the device diagnostic command.

19. An automobile detection and control gateway system, comprising:

a controller area network, comprised of a body control module and a plurality of body devices, wherein the body control module actuates the corresponding body device according to a device diagnostic command, and the actuated body device outputs a status feedback data; and

an automobile detection and control gateway interface, connected with the controller area network based on a communication protocol of International Standard 15765-4 (ISO 15765-4) and recording a plurality of status diagnostic data corresponding to the body devices, the automobile detection and control gateway interface serving for outputting the device diagnostic command and outputting the status diagnostic data matching with the status feedback data.

20. The automobile detection and control gateway system according to claim 19, further comprising at least one external device connected with the automobile detection and control gateway interface, wherein the external device performs corresponding actions according to the status diagnostic data.

21. The automobile detection and control gateway system according to claim 19, wherein the body control module is further connected with an external device, and the body control module controls an action of the external device according to the device diagnostic command.

22. A method for establishing an automobile detection and control database, adapted to a controller area network (CAN) including a body control module and a plurality of body devices, at least comprising:

determining a configuration structure of the controller area network;

capturing a plurality of data packets transmitted over the controller area network each time the body devices act according to the configuration structure;

analyzing a control data output by the body control module and a network identifier and a status identifier of the body device by use of the data packets;

gathering the configuration structure of the controller area network, a function of the body device, and the network identifier and the status identifier of the body device to form a status diagnostic data and integrating the status diagnostic data of the body devices to form a status database; and

determining data interdependence between the control data and the network identifiers corresponding to the body devices, establishing a device diagnostic command for one corresponding body device, and gathering the configuration structure of the controller area network and the device diagnostic commands to establish an instruction database.

23. The method for establishing an automobile detection and control database according to claim 22, wherein a step of determining a configuration structure of the controller area network comprises:

determining whether the controller area network is a single wire CAN or a two wire CAN; and

analyzing a baud rate and a CAN identifier used by the controller area network based on International Standard 11898-1 (ISO 11898-1) Specification.

24. The method for establishing an automobile detection and control database according to claim 23, wherein the baud rate of the controller area network is 33.333 Kbps, 83.333 Kbps, 100 Kbps, 125 Kbps, 250 Kbps, or 500 Kbps.

25. The method for establishing an automobile detection and control database according to claim 23, wherein the CAN identifier of the controller area network is 11 bits or 29 bits.

26. An automobile detection and control method, adapted to an automobile detection and control gateway interface connected with a controller area network formed by a body control module and a plurality of body devices, the automobile detection and control gateway interface recording a plurality of device diagnostic commands, comprising:

sending a device diagnostic command by the automobile detection and control gateway interface, the device diagnostic command being transmitted to the body control module over the controller area network; and

analyzing a network identifier and a control data contained in the device diagnostic command by the body control module to command the body device corresponding to the network identifier to perform corresponding actions according to the device diagnostic command.

27. The automobile detection and control method according to claim 26, wherein the automobile detection and control gateway interface further records a plurality of status diagnostic data, and the automobile detection and control method further comprises:

capturing, by the automobile detection and control gateway interface, a status feedback data output by the body device, and outputting the status diagnostic data matching with the status feedback data.

28. The automobile detection and control method according to claim 27, wherein the automobile detection and control gateway interface is further connected with an external device, and the external device acquires the status diagnostic data output by the automobile detection and control gateway interface.