MEN Mikro Elektronik introduced the F75P CompactPCI PlusIO single board computer. The F75P SBC features two redundant Intel Atom processors with independent RAM and Flash memory. It is ideal for rail applications and brings functional safety to the board level. Pricing for the MEN 3U CompactPCI PlusIO safe railway computer starts at EUR 2695 plus VAT for single units.
Two of the included three Intel Atom E680T processors (with 512 MB DDR2 RAM) are set up to be redundant, forming the safe control unit of F75P. The third Intel Atom with 1 GB DDR2 controls I/O. It passes on the commands to the interfaces that were sent by the two control CPUs across an FPGA-based communication interface.
Two supervisor units monitor the environmental conditions specified for the two control CPUs and put the system into a safe state, for instance if the maximum operating temperature was exceeded. The output of a faulty processor is not passed through (fail-silent), or the complete system is shut down in case of an error and a train, for example, is stopped (fail-safe).
To increase the availability of a system, you can also connect two F75P SBCs to form a cluster. If one card fails, the second can take over from hot or cold stand-by, and operation can continue. An event logger allows tracing and simply reading out any hardware and application events.
MEN F75P SBC Features
- 2x Intel Atom E6xx, 512 MB DDR2 RAM (each) for onboard dual redundancy
- 1x Intel Atom E6xx, 1 GB DDR2 for I/O
- Independent supervisors for each block
- Fail-safe and fail-silent board architecture
- Clustering of two F75P to raise availability
- Event logging
- Certifiable up to SIL 4 (with report from TÜV SÜD)
- Developed according to EN 50129, EN 50128 and IEC 61508
- Full EN 50155 compliance
- -40 to +85°C qualified
- Conformal coating