What is ISO26262 Functional safety standard

2023-03-24 767

With the increasing complexity of the automotive industry, efforts have been made to develop safety and compliance systems. For example, Hyundai Motor Company uses throttle by wire and other by wire systems. When the driver presses the accelerator, the sensor in the pedal will send a signal to the electronic control unit. The control unit will analyze various factors, such as engine speed, vehicle speed, and pedal position, and then transmit commands to the accelerator.
Testing and verifying systems such as throttle wire control is a significant challenge for the automotive industry. The goal of ISO 26262 is to provide a unified safety standard for all automotive E/E systems.
The draft international standard (DIS) of ISO 26262 was published in June 2009. Since the release of the draft, the influence of ISO 26262 in the automotive industry has gradually deepened. Due to the publication of the draft public standard, lawyers consider ISO 26262 as a cutting-edge technical standard. Advanced technology refers to the highest level of development of a device or process at a specific time.
According to German law, car manufacturers are usually liable for personal injury caused by product malfunctions. Faults that cannot be detected by cutting-edge technology can be exempted from liability.
ISO 26262 provides a universal standard that can be used to measure the safety of systems during use. At the same time, the standard also provides a general Glossary to refer to specific parts of the system. This is consistent with other security critical application areas: providing a universal standard to measure system security.
ISO 26262 adopts a step-by-step system to manage Functional safety and manage product development at the system, hardware and software levels.
The ISO 26262 standard provides specifications and recommended practices throughout the entire product development process (from concept development to shutdown). ISO 26262 provides detailed instructions on how to specify acceptable risk levels for systems or components, as well as methods for documenting the overall testing process. In summary, ISO 26262:
Provide automotive safety lifecycle (management, development, production, operation, service, decommissioning) and support customization of necessary activities in each stage
Provide a risk-based method to determine the risk level of vehicles (Safety integrity level of vehicles, abbreviated as ASIL)
Use ASIL to specify the necessary safety requirements for the project to achieve acceptable residual risks
Provide verification requirements and methods to ensure effective and acceptable security is achieved