System for data transmission in a motor vehicle, motor vehicle and method
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsMohamad Chamas, Florian Brummer, Helmut Kellermann
Life of this patent
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Abstract
A system for data transmission in a motor vehicle includes a central control unit, a first zonal control module, and a first LIN bus. The central control unit includes at least a first LIN master and a second LIN master. The first zonal control module is operably coupled to the central control unit via a first data connection. The first LIN bus is operably coupled to the first zonal control module. A first LIN slave connected to the LIN bus is assigned to the first LIN master, and a second LIN slave connected to the LIN bus is assigned to the second LIN master.
Claims17
A system for data transmission in a motor vehicle, the system comprising:
- a central control unit comprising at least a first LIN master and a second LIN master;
- a first zonal control module operably coupled to the central control unit via a first data connection;
- and
- a first LIN bus operably coupled to the first zonal control module;
- wherein a first LIN slave connected to the LIN bus is assigned to the first LIN master,
- wherein a second LIN slave connected to the LIN bus is assigned to the second LIN master;
- wherein the first zonal control module is configured to control a temporal sequence in which headers of the first LIN master and the second LIN master received on the first zonal control module are transmitted from the first zonal control module onto the first LIN bus according to a communication behavior;
- and
- wherein the communication behavior provides synchronous transmission in which a LIN master transmits no further header as long as said LIN master has not received a response corresponding to a most recently transmitted header which is transmitted from a LIN slave via the first LIN bus, the first zonal control module, and the first data connection to the LIN master.
A method for activating at least a first LIN slave and a second LIN slave which are connected to a common LIN bus, the method comprising:
- transmitting first header information from a first LIN master to the first LIN slave via the common LIN bus;
- transmitting second header information from a second LIN master to the second LIN slave via the common LIN bus, wherein the first LIN master and the second LIN master are arranged on a central control unit, wherein a zonal control module is operably coupled to the central control unit via a first data connection, and wherein the common LIN bus is operably connected to the first zonal control module;
- receiving, via the common LIN bus, response information from the first LIN slave corresponding to the first header information on the first LIN master,
- receiving, via the common LIN bus, response information from the second LIN slave corresponding to the second header information on the second LIN master;
- and
- controlling, with the first zonal control module, a temporal sequence in which the first header information of the first LIN master and the second header information of the second LIN master received on the zonal control module are transmitted from the zonal control module onto the first LIN bus according to a communication behavior, and wherein the communication behavior provides (1) synchronous transmission in which a LIN master transmits no further header as long as said LIN master has not received a response corresponding to a most recently transmitted header, or (2) asynchronous transmission in which a LIN master transmits a further header even if the LIN master has not received a response corresponding to a most recently transmitted header.
Dependencies are inferred from the claim text.