This small circuit can be used to control model railway turnouts operated by AC voltages. A logic level in the range of 5–12 V can be used as the control signal. The coils of the turnout are switched ...

Modelling the behaviour of a switch as a SysML state diagram. But where do the test cases that an on-board unit has to pass actually come from? As is common practice in testing today, they are derived ...

The complex and demanding railway transportation sector requires computer hardware and software that is secure, durable and offers high performance. Many of the currently evolving technologies in the ...