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US 9,436,570 B2Granted
User station of a bus system and method for transmitting data between user stations of a bus system
AssigneeRobert Bosch GmbH
InventorsChristian Horst, Florian Hartwich
Life of this patent
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Abstract
A user station of a bus system includes: a counter for counting each message which is sent without error and/or each message which is received without error, the counter being incremented when a message is sent without error and/or a message is received without error, and a reset device for resetting the counter reading of the counter when the counter reading of the counter is read.
Claims10
A user station of a bus system, comprising:
- a first counter configured to be incremented responsive to each message that is sent without error and not in response to messages received without error;
- a second counter configured to be incremented responsive to each message that is received without error;
- a counter-reading and reset device configured to, for each of at least one of the first counter and the second counter, (a) read out a counter reading of the respective counter and (b), responsive to the read out, reset the counter reading of the respective counter;
- and
- an evaluation device configured to evaluate the counter reading read out by the counter-reading and reset device;
- wherein at least one of:
- the evaluation device is configured to ascertain whether sent messages of the user station are blocked by messages of a higher priority which are sent by a further user station;
- the evaluation device is configured to ascertain whether a quotient of (i) the counter reading of the first counter divided by (ii) a sum of the counter readings of the first and second counters is smaller than a predetermined expected value;
- and
- the user station is configured to output an error message when the evaluation device determines that the sum of the counter readings of the first and second counters in the user station is different than a sum of counter readings of first and second counters in the further user station.
7 more elements
A method for managing data transmissions and receptions of a user station of a bus system, the method comprising:
- incrementing, by a first counter in the user station, a first count responsive to each message that is sent without error and not in response to messages received without error;
- incrementing, by a second counter in the user station, a second count responsive to each message that is received without error;
- for each of at least one of the first counter and the second counter, a counter-reading and reset device (a) reading out a counter reading of the respective counter and (b), responsive to the read out, resetting the counter reading of the respective counter;
- evaluating, by an evaluation device, the counter reading read out by the counter-reading and reset device;
- and
- at least one of:
- ascertaining, by the evaluation device, whether sent messages of the user station are blocked by messages of a higher priority which are sent by a further user station;
- ascertaining, by the evaluation device, whether a quotient of (i) the counter reading of the first counter divided by (ii) a sum of the counter readings of the first and second counters is smaller than a predetermined expected value;
- and
- outputting, by the user station, an error message when the evaluation device determines that the sum of the counter readings of the first and second counters in the user station is different than a sum of counter readings of first and second counters in the further user station.
7 more elements
Dependencies are inferred from the claim text.