Fault Tracing in the Data Bus System of a Vehicle
First Claim
1. A motor vehicle, comprising:
- a data bus system of the motor vehicle, the data bus system including at least a first and a second control device, the at least first and second control devices communicating with one another over at least one data bus;
at least one identification device of the data bus system, the identification device providing an identifier to each message sent by the first and the second control device;
wherein the first control device receives a first message, and the identification device causes the first control device to provide a message sent therefrom with a first identifier; and
wherein the second control device receives the message with the first identifier sent from the first control device, the identification device causing the second control device to provide a message sent therefrom with a second identifier.
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Accused Products
Abstract
A data bus system of a motor vehicle includes at least one first and one second control device which communicates with each another via at least one data bus. In order to be able to localize errors more easily, the system has at least one identification device which provides an identifier to each of the messages sent by the first and the second control device. The first control device receives a first message, and the identification device causes the first control device to provide the message sent therefrom with a first identifier. The second control device receives the message sent by the first control device with the first identifier, and the identification device causes the second control device to provide the message sent therefrom with a second identifier.
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Citations
16 Claims
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1. A motor vehicle, comprising:
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a data bus system of the motor vehicle, the data bus system including at least a first and a second control device, the at least first and second control devices communicating with one another over at least one data bus; at least one identification device of the data bus system, the identification device providing an identifier to each message sent by the first and the second control device; wherein the first control device receives a first message, and the identification device causes the first control device to provide a message sent therefrom with a first identifier; and wherein the second control device receives the message with the first identifier sent from the first control device, the identification device causing the second control device to provide a message sent therefrom with a second identifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for program-controlled tracing of a fault in a vehicle data bus system, the data bus system comprising at least three control devices which are operably configured to communicate with one another by way of a data bus, the data bus system including an identification device providing an identifier to each of the messages sent out by the three control devices, the method comprising the acts of:
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receiving a first message in a first of the three control devices; sending a message out from the first control device with a first identifier provided by the identification device; receiving the message with the first identifier in a second of the three control devices; sending a message out from the second control device with a second identifier provided by the identification device; and communicating with the control devices by way of a fault tracing device in order to determine whether the message sent out by the first control device and provided with the first identifier as a first fault identification has been processed by one of the second control device or a third of the three control devices. - View Dependent Claims (15, 16)
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Specification