Method for handling errors in an electronic brake system and corresponding device
AssigneeContinental Teves AG & Co. oHG
InventorsJürgen Böhm, Stefan Stölzl, Peter Willimowski, Oliver Hoffmann, Joachim Nell, Rainer Oehler
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Abstract
Electronic brake systems are functionally split-up safety-critical real-time systems which are subject to high standards with regard to error detection and error handling. This invention describes a method and corresponding device for error handling in such systems which permits only a few defined system conditions, inclusive of a pre-check, with the transition from one system condition to the next condition only being possible if certain defined events take place.
Claims15
A method for handling errors in a modular-design electronic brake system of vehicles comprised of a number of intelligent modules, comprising the steps of:
- determining and defining a small number of unambiguous technological operating conditions of the brake system with predefined technological events which alone effect a transition from one operating condition to the next condition;
- combining the technological operating conditions with condition-specific control measures as well as with measures warning the driver of the vehicle;
- detecting errors in the brake system and implementing error-condition-responsive error handling in accordance with the operating conditions;
- determining and defining a plurality of unambiguous technological operating conditions of the respective module with predefinition of certain, defined technological events which alone effect a transition from one operating condition of the module to the next condition;
- combining the technological operating conditions of the module with at least one condition-specific control, regulatory, reporting, and warning measure;
- and
- detecting errors in the respective module and implementing error-condition-responsive error handling in accordance with the operating conditions of the module.
A device for handling errors in a modular-design electronic brake system of vehicles including a number of intelligent modules which at least includes one central computing unit for actuating wheel brakes in dependence on the driver's intention to brake and on an operating condition of the brake system, comprising:
- means for determining a plurality of unambiguous technological operating conditions of the brake system which alone effect a transition from one operating condition to the next condition;
- means for combining the technological operating conditions condition-specifically with respectively control/regulatory and warning devices for the driver;
- and
- means for conducting a pre-check routine for detecting any errors in the brake system and,
- means for implementing error-condition-responsive error handling in accordance with the operating conditions,
- central computing means for centrally executing error handling code for handling errors, wherein, within each module, there is provision of autonomous subcomputing units provided with error handling codes in addition to said central computing means, wherein each said module includes
- means for determining a plurality of unambiguous technological operating conditions which alone effect a transition from one operating condition to the next condition;
- means for combining the technological operating conditions condition-specifically with respectively associated control, regulatory, and warning devices;
- and
- wherein the error handling code includes a pre-check routine for detecting any errors in the brake system at the start of the vehicle and during the operation of the vehicle and implementing error-condition-responsive error handling in accordance with the operating conditions.
Dependencies are inferred from the claim text.