The proposed technology is based on the concept of Power-Over-Fibre (PoF), which involves the transmission of data and power over an optical fiber. This technology is suitable for applications where traditional copper cabling is impractical or undesirable. This is the case with pantographs, where there is a large potential difference between the catenary and the earth, and therefore any electrical contact must be avoided for safety reasons. Furthermore, pantographs operate in an environment with very high electromagnetic interference (EMI). In this context, optical fiber, which is inherently insensitive to EMI, can enable an optoelectronic accelerometer to be energized and the accelerometer signals to be transmitted without creating any electrical contact between the train and the high-voltage region.
- Safety: PoF eliminates the risk of electrical shock, making it safer for on-board applications.
- Reduced weight: Optical fibres are light and flexible compared to copper cables, making them ideal for use in the thin, curved structure of a pantograph, without adding significant weight or bulk.
- Electromagnetic immunity: Optoelectronic components are less affected by electromagnetic interference, ensuring accurate and reliable sensor readings.
- Reliability: Optical fibres are less susceptible to interference and offer more reliable data transmission than conventional electrical cables.