Communications system, in particular for a motor vehicle
First Claim
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1. A communications system for a motor vehicle, comprising:
- a bus line;
a central controller coupled to the bus line;
at least two control modules coupled to the bus line; and
wherein at least one of the central controller and one of the control modules includes means for combining messages to be sent into a common message transmitted onto the bus line.
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Abstract
A communications system, in particular for a motor vehicle, has a bus line, a central controller which is connected to the bus line, and at least two control modules which are connected to the bus line. The controller and/or at least one of the control modules is capable of combining messages to be sent into a common message which is transmitted onto the bus line The communications system can be used, for example, for fuel-cell electric vehicles.
27 Citations
28 Claims
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1. A communications system for a motor vehicle, comprising:
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a bus line;
a central controller coupled to the bus line;
at least two control modules coupled to the bus line; and
wherein at least one of the central controller and one of the control modules includes means for combining messages to be sent into a common message transmitted onto the bus line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A communications system for a motor vehicle, comprising:
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a first bus line;
a central controller coupled to the first bus line;
a plurality of control modules coupled to the first bus line;
wherein at least one of the central controller and the at least one of the plurality of control modules operate to combine messages that are to be sent into a common message which is then transmitted onto the first bus line. - View Dependent Claims (24, 25, 26)
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27. A method of operating a controller area network in a motor vehicle having a central controller and at least two control modules coupled to a bus line, the at least two control modules operating to control sub-assemblies of the motor vehicle, the method comprising the acts of:
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combining in the central controller messages having set point values for the sub-assemblies of the motor vehicle to form a common setpoint value message sent over the bus line to the at least two control modules;
combining in at least one of the two control modules actual value messages destined for the central controller from the two control modules to form a common actual value message; and
transmitting the common actual value message by the at least one control module to the central controller over the bus line. - View Dependent Claims (28)
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Specification