Cheaper and faster certification contributes to safer products

Oct 10, 2018 | Research/Cooperation Global

Before a product, with an embedded safety-critical system, is launched on the market, the product goes through rigorous safety certification process. Irfan Sljivo, who recently defended his doctoral thesis in computer science at MDH, has researched on how these processes can be done faster and cheaper, which ultimately contributes to safer products for the user.

Irfan Sljivo.

– My research focuses on safety certification of safety-critical systems. Safety certification takes time and is therefore also costly for the companies. The aim with my research has been to propose ways to make the safety certification more effective, which in turn also reduces the cost of developing a safety-critical system, says Irfan Sljivo.

Safety-critical systems are computer systems that exist in, for example, vehicles, spacecraft and medical devices, which can cause harm to human life or major damage to their environment if they do not work properly. Therefore, a car for example, must comply with certain safety standards before it is launched. To ensure that the car complies with these safety standards, it undergoes rigorous process of gathering evidence that the car is safe enough, what we refer to as safety certification. This is done for each new car model produced

– For example, even though a company produces a new car model, where several of the components are the same as in a previous model, the same evidence need to be produced again to show that these components are safe enough in the new car model. But my colleagues and I have come up with a new concept where components, that have already been analysed for one system, do not necessarily have to undergo the same analyses again when implemented in a new system, says Irfan Sljivo.

In the doctoral thesis "Assurance Aware Contract-Based Design for Safety-Critical Systems", Irfan Sljivo presents the new concept that enables reuse of components between different systems together with their safety evidence.

– By reusing safety evidence together with components, companies can reduce the cost of safety certification, which in turn enables them to develop their work on safety even more. Something that contributes to, for example, safer cars for the user, says Irfan Sljivo.