Vital Board for Precision Station Stop

Our long-standing client, a global leader in the rail industry, was developing an advanced programmable product to perform wayside applications. The product was planned to operate in three function modes, and PSA was responsible for providing the high-precision positioning of trains to ensure accurate station stops.

Launch a multifunctional wayside product enabling precise train stops at designated locations

Implement train positioning functionality within a multifunctional board.

To meet the client’s goal of precision stops, PSA’s embedded team designed a wide-band signal transmitter, thus implementing a frequency resonance-based position tracking method. The transmitter generates ten simultaneous carrier frequencies, each with independently configurable frequency and amplitude.

Our team implemented all the essential components to ensure stable and reliable signal transmission:

• Frequency synthesizers functioning as generators

• Carrier amplitude level controls

• Carrier combinators to merge signals into a single digital flow

• Digital-to-analog converter interface 

From the solution overview through module decomposition to architecture detail, we developed the transmission module to be smoothly integrated into the multi-purpose board. After implementation, the system underwent extensive simulation-based verification.

As a result, the client received comprehensive documentation, including FPGA-based transmitter designs and test benches to validate the performance of the newly developed railroad signaling solution.

• Requirements definition
• Architecture design
• Specifications creation
• Firmware development (FPGA)
• GUI implementation
• Simulation testing