Railway Computing | EN 50155 & EN 50121-4 Compliant

EN 50155, EN 50121-4 & Railway Computing

Impulse have the industry insight and technology know-how to help UK rail industry integrators innovate with connectivity, communication and monitoring solutions.

 

Robust Computing Solutions for Rolling Stock and Wayside

Computing is playing an increasingly vital role in helping TOCs deliver the best possible customer experience while protecting tight margins and meeting regulatory demands. It also has a role to play in protecting staff and equipment. With extensive experience in the sector, Impulse combines expertise with technology partnerships to offer class-leading devices to integrators who want reliable, repeatable and robust solutions.

Wide Temperature

Designed to operate reliably in extreme temperatures such as -40°C to 70°C.

Wide Voltage

Supports fluctuating railway power inputs, ensuring stable performance, including a wide voltage range such as 24V to 110V DC input.

Shock & Vibration Resistant

Resists shock and vibration through rugged construction, solid-state components, and compliance with EN 50155.

Rail-Approved Computing For Your Application: Where Our Solutions Work

  • Rolling Stock
  • Wayside

Driver Advisory Systems (DAS)

Driver Advisory Systems (DAS)

Driver Advisory Systems (DAS) are increasingly common on UK rolling stock, providing real-time information to help drivers operate more efficiently. These systems typically include a certified HMI or display, paired with an EN 50155-compliant computer, located in the driver’s cab. We supply the industrial PCs, HMIs, and displays required for these systems, supporting integrators and train manufacturers in developing DAS solutions that may include scheduling, engineering data, and DOO (Driver Only Operation) information.

CCTV and Video Surveillance

CCTV and Video Surveillance

Whether you are installing for passenger security or you are a plant operator with a requirement to improve the visibility of your operations, we can supply, build and configure a system or bill of materials perfect for your application demands. We offer a wide range of EN 50155 and EN 50121 network video recorders, IP CCTV cameras and both layer 2 and layer 3 networking devices suitable integration into rail CCTV systems. Talk to our technical sales team for more information.

Predictive Maintenance

Predictive Maintenance

Modern railway systems rely on predictive maintenance to enhance safety, reduce downtime, and lower operating costs. By collecting and analysing real-time data from onboard sensors and trackside equipment, predictive maintenance systems can detect early signs of wear or failure before they lead to critical issues. Industrial computers with advanced processing power, wide temperature tolerance, and robust connectivity can support these systems across rail networks.

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Wi-Fi and Passenger Connectivity

Wi-Fi and Passenger Connectivity

As the average commuter carries at least two Wi-Fi enabled devices, operational technology is increasingly using Wi-Fi as a gateway to access engineering data on the railway. Whether you want to install passenger Wi-Fi or access condition monitoring data, we have a range of EN 50155 access points and bridges to enable your railway Wi-Fi project.

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EN 50155 Computing for Harsh Environments

Our rail-approved industrial device range includes devices certified under EN 50155, ensuring optimal performance and reliability in harsh railway environments. EN 50155 certification guarantees resistance to temperature extremes, shock, vibration, and humidity, making our solutions ideal for onboard railway applications.

EN 50121-4 Computing for Uninterrupted Railway Signalling

Our EN 50121-4 certified products ensure electromagnetic compatibility (EMC) for railway signalling and trackside applications, minimising interference with other electronic systems in railway environments.

Explore Our EN 50155 and EN 50121-4 Compliant Products

  • Rail-Approved Embedded Computers
  • Rail-Approved Rack PCs
  • Rail-Approved Panel PCs
  • Rail-Approved Networking

tBOX110

Intel Atom E3940 Fanless Vehicle-grade Embedded System with dual HDMI, 8-bit DIO, TPM2.0, 9V to 26V DC and Smart ignition.

View the tBOX110

ITA-560NX

NVIDIA Jetson Orin NX EN 50155 Rugged Edge AI PC with 16GB LPDDR5, 4x Gigabit Ethernet, 1x CANbus, 1x COM 2x USB3.0 ports.

View the ITA-560NX

IVX-1000

Intel 13th/12 Gen Core i9/i7/i5/i3 Fanless Rugged In-vehicle System with 8x Independent 2.5GigE LAN M12 X-coded ports, 16-bit isolated DIO.

View the IVX-1000

tBOX520

Intel 12th Gen. Alder Lake-P Core i7/i5/i3/Celeron Embedded Railway PC with EN 50155, EN 45545-2 Certification and flexible I/O modules.

View the tBOX520

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Frequently Asked Questions

Why is EN 50155 certification critical for onboard railway computers?

  • Railway environments expose electronics to extreme conditions, including wide temperature fluctuations, vibrations, shocks, humidity, and unstable power supplies. EN 50155 ensures that computing systems can withstand these challenges while maintaining reliable performance.

How does EN 50121-4 compliance affect railway computing systems?

  • EN 50121-4 ensures that computing systems do not emit or suffer from electromagnetic interference (EMI) in railway environments. This is particularly crucial for signaling, communication, and control center operations where interference could cause system failures or safety risks.

Can standard industrial computers be used in railway applications instead of EN 50155-compliant systems?

  • In most cases, no. Standard industrial computers are not built to handle the power fluctuations, shock, vibration, and extreme environmental conditions typical of railway environments.
  • However, in some situations, OEMs developing railway products or systems may choose to use non-certified computers if the entire system will undergo certification, or if certification is not required for that specific application.
  • In these cases, we can still provide guidance and support to help customers select suitable computing solutions for their railway projects, even if EN 50155 or other standards are not immediately applicable.

What are the key durability features of an EN 50155-compliant railway computer?

  • Extended Operating Temperature: Typically -40°C to +70°C with short-duration operation up to +85°C.
  • Shock & Vibration Resistance: Rigid chassis, fanless cooling, and SSD storage ensure system stability on moving trains.
  • Power Supply Resilience: Wide-range DC input (e.g., 24V, 48V, 72V, 110V) with power interruption protection.
  • Ingress Protection (IP Rating): Often IP65 or higher for dust and moisture resistance.

How are common power supply challenges in railway computing addressed?

  • Railway power supplies are prone to voltage fluctuations, surges, and interruptions. EN 50155-compliant computers handle this with wide-range DC inputs, power hold-up functions, and transient voltage protection to ensure continuous operation even during power disruptions.