The new digital Kombudu semaphore with the Jaworski Award
Preparing for the digital revolution, Kombud showcased a range of new solutions at the Trako 2025 Fair. One of them is a fully digital LED signal light with an integrated LEU, designed to work with the EULYNX interface. The signal light received the Professor Czesław Jaworski award.
– One of the challenges and operational issues for railway infrastructure managers is the necessity of regularly replacing light sources in signaling devices. This requires a lot of attention, time, and human resources. It happens that maintenance staff have to climb up and down the signal light several times during the servicing of one device, as they cannot work at height while a train is passing. Our device allows avoiding this challenge because LED sources practically do not require replacement throughout their entire life cycle – says Sławomir Jasiński, CEO of Rail-Mil, a company belonging to the Kombud Group.
In designing the signal light, engineers utilized previous years of operational experience with LED sources on railway, agglomeration, and metro networks, which allowed them to optimize the technology of manufacturing the new device. As one of the few in the world, it combines a classic Fresnel lens (known from typical signal lights) with a point LED source. This allowed meeting the requirements of Instruction Ie-117. At the same time, it eliminated the disadvantages characteristic of matrix systems. Research confirmed that the LED/lens pair meets the requirements of Instruction Ie-123, particularly in terms of chromaticity, brightness, and geometry.
The signal lights are adapted to work with the EULYNX interface. Placing both the signal light controller and the LEU encoder in one cassette reduces costs and simplifies the design and implementation of investments. An added feature is diagnostics, which provides complete knowledge about the state of the signal light (LED sources, all parameters of controlled components, and control modules). Data is collected in a system that allows monitoring the device.
– By proposing a digital signal light, we are responding to the expectations of the national infrastructure manager while also leveraging experiences from other markets. Importantly, the digitization of the signal light allows for full implementation of variable content indicators – for example, W21. Finally, the application of digital technology requires only one fiber optic line and local power supply. This means that we reduce the number of wires by over 90% and the weight of cabling by over 95% – says Artur Marcinkiewicz, CEO of Kombud Automation.
Kombud Group S.A. brings together dynamic companies providing digital solutions for critical infrastructure and industry. For nearly 35 years, Kombud Group has implemented over 300 station systems for railways and metros, as well as over 2500 traffic control systems at railway crossings. Kombud's computer systems manage traffic on the Central Railway Mainline (CMK), at stations in the Warsaw railway hub, on the Heavy-Haul Railway, and also on both lines of the Warsaw Metro. Over 700 employees, including 400 engineers, create, patent, and implement modern solutions for the metro and railways, based on European standards. The group’s company Rail-Mil Computers manufactures among others eurobalises, programmers, LEU encoders, and other electronic components, as well as the rmCBTC® system, which allows for automatic train movement. The Kombud Group also includes the Metroprojekt company, which designed most of the tunnels and stations on the first and second lines of the Warsaw metro, as well as obtaining the first building permit in Poland for the High-Speed Rail tunnel under Łódź.
For additional information, contact:
Michał Kudła, tel. 507 77 45 14
michal.kudla@kombudgroup.com
Photo selection:
https://kombudgroup.com/photos
