Timer module and method for checking an output signal
AssigneeRobert Bosch GmbH
InventorsEberhard Boehl, Ruben Bartholomae
Life of this patent
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Abstract
A method for checking an output signal of a timer module is provided, the timer module having at least one output module, at least one input module, and at least one logic module. The output signal to be checked is read in into the timer module via an input module in addition to its output via an output module, and in the input module, signal characteristics to be checked are determined for the output signal to be checked. Furthermore, the signal characteristics to be checked are read by the logic module from the input module and the signal characteristics to be checked are compared in the logic module to the predefined values for the signal characteristics.
Claims21
A timer module of a control unit, comprising:
- at least one output module;
- at least one input module;
- at least one logic module;
- and
- a routing unit to interconnect the modules;
- wherein an output signal to be checked is read in to the input module, wherein the output signal to be checked includes an output signal of the output module,
- wherein the signal characteristics for the output signal to be checked are determined in the input module,
- wherein the logic module reads the signal characteristics from the input module,
- wherein the logic module compares the signal characteristics to at least one comparison value, a signal length of the output signal being compared as the signal characteristics, in that in the input module time stamp values are assigned to the signal flanks of the output signal and a difference of the time stamp values is compared to a permissible maximum value,
- wherein the routing unit interconnects the modules and, which due to blocking requesting and transmitting of data, provides interrupt functionality without a separate interrupt controller, and
- wherein the routing unit enables each of the modules, which are connected to the routing unit, to have any number of routing unit write channels, which are data sources, and any number of routing unit read channels, which are data sinks, so that the routing unit provides that any of the data sources may be connected to any of the data sinks.
A method for checking an output signal of a timer module of a control unit, the timer module having at least one output module, at least one input module, and at least one logic module, the method comprising:
- reading into the input module the output signal to be checked, wherein the output signal to be checked includes an output signal of the output module;
- determining in the input module the signal characteristics for the output signal to be checked;
- reading by the logic module the signal characteristics from the input module;
- and
- comparing in the logic module the signal characteristics for the output signal to at least one comparison value, a signal length of the output signal being compared as the signal characteristics, in that in the input module time stamp values are assigned to the signal flanks of the output signal and a difference of the time stamp values is compared to a permissible maximum value;
- wherein the timer module includes a routing unit to interconnect the modules,
- wherein the routing unit interconnects the modules and, which due to blocking requesting and transmitting of data, provides interrupt functionality without a separate interrupt controller, and
- wherein the routing unit enables each of the modules, which are connected to the routing unit, to have any number of routing unit write channels, which are data sources, and any number of routing unit read channels, which are data sinks, so that the routing unit provides that any of the data sources may be connected to any of the data sinks.
Dependencies are inferred from the claim text.