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Fault management system for functional safety of automotive-grade chips

A technology of functional safety and fault management, which is applied in the direction of brake safety system, functional inspection, faulty hardware testing method, etc., can solve the problem of reducing system availability, which is not conducive to chip realization of fast, high coverage, personalized configuration, and classification granularity Major problems, to achieve the effect of reducing fault detection load, high coverage, and improving availability

Active Publication Date: 2020-07-03
NANJING SEMIDRIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. In the absence of a centralized fault management module inside the chip, it brings a lot of load to the fault identification, classification and processing of the system software, which is not conducive to the realization of fast, high coverage and personalized configuration of the chip Power-on (Power-on), power-down (Power-down) self-test;
[0007] 2. In the situation where the fault management module is integrated inside the chip and the faults are classified, but the classification granularity is very large (current faults are divided into two categories: fatal (Fatal) and error (Error)), resulting in the system not being able to effectively and timely Reasonable failure response measures are taken, which reduces the availability of the system in the event of a failure

Method used

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  • Fault management system for functional safety of automotive-grade chips
  • Fault management system for functional safety of automotive-grade chips
  • Fault management system for functional safety of automotive-grade chips

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Embodiment Construction

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0043] Those skilled in the art can understand that the relevant modules mentioned in the present invention are hardware devices for executing one or more of the operations, methods, steps, measures, and solutions in the procedures described in the present application. The hardware devices may be specially designed and manufactured for the required purpose, or known devices in general-purpose computers or other known hardware devices may also be used. The general purpose computer has programs stored therein selectively activated or reconfig...

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Abstract

The present invention provides a fault management system oriented to the functional safety of a vehicle-level chip, including: a chip external system (out of chip) and a vehicle-level chip, and the vehicle-level chip includes: a processor (CPU), a system controller (System Controller), system configuration module (System Configure), fault manager (Fault Management), on-chip function module (IP 1 ...IP n ); the fault manager (Fault Management) is configured with a fault classification management model. The system fault management system oriented to the safety of vehicle-level chip functions provided by the present invention can ensure that the system software accurately locates and responds to various faults through a fine-grained fault classification system, and can effectively and timely take reasonable fault response measures to improve system performance. Availability in the event of a failure.

Description

technical field [0001] The invention relates to a passenger car system fault management system, in particular to a system fault management system oriented to the functional safety of a car-level chip. Background technique [0002] Functional Safety (Functional Safety) is crucial to safety-related electrical and electronic systems (such as power control systems) in the automotive field. These functional safety (Functional Safety) applications can impose strict constraints on the system to perform safely and reliably in complex system environments. At present, the design of automotive functional safety (Functional Safety) generally follows the ISO (International Organization for Standardization) 26262 standard (for automobiles, released for the first time in 2011 and released the second edition in 2018), which is based on the functions of electronics, electrical and programmable devices. Derived from the basic safety standard IEC (International Electrotechnical Commission) 61...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/22G06F11/26B60T17/18G05B23/02
CPCG06F11/2273G06F11/26G05B23/02B60T17/18G06F11/2284G06F11/0766G06F11/0739G06F11/0793G06F11/0733G06F11/0769G07C5/0808
Inventor 魏斌张力航李斌
Owner NANJING SEMIDRIVE TECH CO LTD
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