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Safety in view
CC Systems has boosted their capabilities, both in technical solutions and resources, in the area of safety critical controls. The company is able to support vehicle OEMs that need to address safety requirements, as per the standards EN 61508, EN 62061 and EN ISO 13849, on machines with advanced electronic controls.
European legislation on machine safety is forcing manufacturers to update their designs to meet the requirements in the new Machinery Directive. With EN 62061 and EN ISO 13849 the machine OEM is prescribed to use a risk-based approach to fulfil these requirements. The safety performance described in EN 60261, SIL (Safety Integrity Level), will for some vehicle OEM imply a new way of working with safety functions in their application.
When it comes to electronic controls and software the historical approach has been to apply redundancy to satisfy safety requirements, ranging from total redundancy to redundancy on critical components. This approach can be quite costly. The modern approach is to have a total system architecture which is designed for safety and at the same time keeps the cost down.
CC Systems offer both hardware and software solutions for addressing safety requirements. Depending on the application and system functionality, a suitable hardware and software architecture is applied. Through pre-packaged watchdog and supervision solutions, a basic safety framework is in place and application specific safety requirements can easily be added to the architecture.
Display computers are often a matter of concern when it comes to safety critical systems. CC Systems has a track record of supplying advanced display computers to OEMs like Bombardier Transportation, John Deere Forestry, Kalmar and Atlas Copco. Now the company pushes display technology to the next level, enabling advanced display computers to meet tough safety requirements. An example of such a safety feature is a mechanism for ensuring that the display image is not frozen; in an application where for example a reversing camera image is displayed it is of utmost importance that the picture displayed is correct.
The company has through its experience from various SIL-projects established a development process that manages the formal requirements on how a safety critical design shall be developed. The process covers both hardware and software design. Understanding the certification process and getting a solution through the paperwork can be quite a challenge the first time out. CC Systems has recently strengthened the organisation with senior specialist staff with lengthy experience from safety certification. “With this competence on-board we can offer OEMs a very good support in their SIL projects” says Jörgen Hansson, Manager of Development and Engineering at CC Systems. |
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Date Posted: 9/24/2008
Number of Views: 311
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