Control device for connecting a can bus to a radio network, and motor vehicle having such a control device

Patent metadata

Field	Value
Publication number	US-2016294725-A1
Application number	US-201615085364-A
Country	US
Kind code	A1
Filing date	Mar 30, 2016
Priority date	Apr 2, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

A control device and corresponding motor vehicle for connecting a CAN bus to a radio network, having the following features: the control device includes a wireless controller, a microcontroller, a programmable logic module and a CAN transceiver; the microcontroller is connected, on the one hand, to the wireless controller and, on the other hand, to the logic module; the CAN transceiver is connected, on the one hand, to the logic module and, on the other hand, to the CAN bus; a data stream to the microcontroller corresponds to a data stream from the CAN transceiver; and the logic module is configured in such a manner that it monitors a data stream from the microcontroller which is addressed to the CAN transceiver and, on the basis of a data frame contained in the data stream from the microcontroller, suppresses at least this data frame.

First claim

What is claimed is:

1 . A control device for connecting a CAN bus to a radio network, said control device comprising:
a wireless controller, a microcontroller, a programmable logic module and a CAN transceiver, the microcontroller is connected to the wireless controller and the logic module, the CAN transceiver is connected to the logic module and to the CAN bus, a first data stream to the microcontroller corresponds to a second data stream from the CAN transceiver, and the programmable logic module is configured to monitor a third data stream from the microcontroller which is addressed to the CAN transceiver and, on the basis of a data frame contained in the first data stream from the microcontroller, the programmable logic module suppresses at least said data frame.

2 . The control device as claimed in claim 1 , wherein the logic module has a decision-making logic device which is fed by the first data stream from the microcontroller.

3 . The control device as claimed in claim 2 ,
wherein the CAN transceiver has a control input in order to either release a fourth data stream to the CAN transceiver by way of a release signal for the CAN bus or to block the release signal by way of a blocking signal for the CAN bus, and wherein the logic module is configured to provide the blocking signal on the basis of the data frame.

4 . The control device as claimed in claim 3 , wherein the logic module is configured to monitor the second data stream from the CAN transceiver and temporarily provide the release signal on the basis of a data frame contained in the second data stream from the CAN transceiver.

5 . The control device as claimed in claim 4 , wherein the logic module is configured to provide the release signal when the data frame comprises a diagnostic request.

6 . The control device as claimed in claim 3 , wherein the CAN transceiver is configured in such a manner that the blocking signal changes the CAN transceiver to an operating state in which the CAN transceiver still receives data frames via the CAN bus.

7 . The control device as claimed in claim 3 , wherein the CAN transceiver is configured in such a manner that the blocking signal changes the CAN transceiver to a stand-by operating state.

8 . The control device as claimed in claim 3 , wherein the CAN transceiver is configured in such a manner that the blocking signal disconnects the CAN transceiver.

9 . The control device as claimed in claim 3 , wherein the logic module has a logic gate in order to either release the fourth data stream to the CAN transceiver by way of a dominant signal level or to block the fourth data stream by way of a recessive signal level, and
the logic module is configured to set the recessive signal level on the basis of the data frame.

10 . A motor vehicle having the control device as claimed in claim 1 .

Assignees

• Porsche Ag

Inventors

• Maise Timo
• Behrendt Paul
• Schneider Kai

Classifications

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• H04L47/801 Primary

  Real time traffic · CPC title

• H04L12/40202 Primary

  by using a plurality of master stations · CPC title

• H04L2012/40273

  the transportation system being a vehicle · CPC title

• H04L2012/40215

  Controller Area Network CAN · CPC title