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Method for a multi-core processor of a control device for emergency operation of a motor vehicle

A control equipment, multi-core technology, applied in the direction of response error generation, redundancy in hardware for data error detection, etc., can solve the problems of motor vehicles no longer running, control equipment failure, etc., to ensure safety, avoid Completely ineffective effect

Inactive Publication Date: 2019-09-20
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] If one of the cores of the multi-core processor fails, this leads to a complete failure of the control equipment and the motor vehicle can no longer be operated

Method used

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  • Method for a multi-core processor of a control device for emergency operation of a motor vehicle
  • Method for a multi-core processor of a control device for emergency operation of a motor vehicle

Examples

Experimental program
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Embodiment Construction

[0033] exist figure 1 In , an embodiment of the method according to the invention is shown schematically as a block diagram. The above-mentioned embodiments are used here in the control device of the motor vehicle (see figure 2 10) in which the control device has a multi-core processor or microcontroller with a plurality of processor cores (so-called cores) 21 , 22 . In this case, each core is assigned separate processes, which are executed exclusively on this core.

[0034] In step 101, at least one of the cores of the multi-core processor fails. In the following, without limiting the generality, the special case is considered, namely exactly one core failure. In step 102 an evaluation is carried out by the control unit as to whether the computing efficiency of the remaining, non-failed cores is sufficient for carrying out all the different processes.

[0035] When this is the case, the process is reassigned to the remaining processors in step 103a. This can be done on ...

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Abstract

The invention relates to a method for the multi-core processor (20) of control equipment (10) of an emergency operation automobile. The multi-core processor has a plurality of cores (21,22), different courses are assigned to the cores (21,22) of the multi-core processor (20) and performed on the assigned cores. When at least one core of the multi-core processor is failed, the left and normal cores are evaluated to judge whether the calculation efficiency of the left cores is enough for all courses or not. If the result is positive, all courses are assigned to the left cores and performed on the cores. If the result is negative, only the determined courses of all the courses are assigned to the left cores.

Description

technical field [0001] The invention relates to a method for the emergency operation of a multi-core processor of a control device of a motor vehicle. Background technique [0002] A multi-core processor has several different processor cores. During runtime, different processes and tasks can be individually assigned to these individual cores of the multi-core processor. The various processes and tasks run here only on the correspondingly assigned cores. [0003] Multi-core microprocessors or microcontrollers are gaining increasing significance in real-time systems, in particular in control units of motor vehicles. A real-time system is characterized in that the results of computing operations (eg processes or tasks) are guaranteed to be calculated within defined time intervals, ie exist before a defined time limit. In real-time systems, a so-called real-time operating system runs on the processor, which regulates the various processes and tasks. [0004] For example, a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/20
Inventor M.费尔希W.罗梅斯
Owner ROBERT BOSCH GMBH
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