Dependent Failure Analysis (DFA) The ISO 26262 standard specifies the requirements and processes required to perform safety activities during the safety life cycle of electrical and/or electronic (E/E) control systems. This standard requires product development at the system, hardware, and software levels, and ensures sufficient functional safety through activities such as requirements specification, design, integration, … Read more
Fault Tree Analysis (FTA) FTA in ISO 26262 Functional Safety Standard Fault Tree Analysis (FTA) is a powerful tool for analyzing the failure propagation path of a system and identifying its cause, and plays an important role in functional safety analysis in the automotive industry. In particular, it is used as an essential methodology for … Read more
AIAG-VDA FMEA In the Safety Analysis of the ISO 26262 functional safety standard, Inductive Analysis is required for all ASILs (A, B, C, D). Deductive Analysis usually performs FMEA. Recently, FMEA is performed by AIAG-VDA FMEA, which consists of a total of 7 steps. For reference, steps 1 to 3 are classified as System Analysis, … Read more
Safety Mechanism for Sensors and Actuators In this post, we will learn about Safety Mechanisms used in Sensors and Actuators. The Safety Mechanisms described in this post are based on ISO 26262-5:2018 Annex D. D.2.8.1 Sensor valid range The Sensor Valid Range technique is a safety mechanism used in embedded systems, particularly in automotive applications, … Read more
Safety Mechanisms for Temporal monitoring and logical programme sequence monitoring In this post, we will learn about Safety Mechanisms used in Temporal monitoring and logical programme sequence monitoring. The Safety Mechanisms described in this post are based on ISO 26262-5:2018 Annex D. D.2.7.1 Watchdog with separate time base without time-window The Watchdog with Separate Time … Read more
Safety Mechanisms for Power Supply In this post, we will learn about Safety Mechanisms used in Power Supply. The Safety Mechanisms described in this post are based on ISO 26262-5:2018 Annex D. D.2.6.1 Voltage or current control (input) Voltage or Current Control is a technique used in functional safety systems to monitor the behavior of … Read more
Safety Mechanisms for Communication Bus In this post, we will learn about Safety Mechanisms used in Communication Bus. The Safety Mechanisms described in this post are based on ISO 26262-5:2018 Annex D. D.2.5.1 One-bit hardware redundancy The One-bit Hardware Redundancy technique is a fundamental safety measure outlined in ISO 26262 that focuses on detecting bit … Read more
Safety Mechanisms for IO units and Interfaces In this post, we will learn about Safety Mechanisms used in I/O units and Interfaces. The Safety Mechanisms described in this post are based on ISO 26262-5:2018 Annex D. D.2.4.1 Test pattern The Test Pattern technique outlined in ISO 26262 is a diagnostic approach used to detect static … Read more
Safety Mechanism for Processing Unit In this post, we will learn about Safety Mechanisms used in Processing Unit. The Safety Mechanisms described in this post are based on ISO 26262-5:2018 Annex D. D.2.3.1 Self-test by software Self-test by Software in the ISO 26262 standard is a safety mechanism that uses software to detect faults in … Read more
Safety Mechanisms for Electrical and Electronic In this post, we will learn about Safety Mechanisms used in electrical and electronic elements. The Safety Mechanisms described in this post are based on ISO 26262-5:2018 Annex D. D.2.1.1 Failure detection by on-line monitoring On-line monitoring is a method of detecting faults by monitoring the normal operation of … Read more