Innovative Remote Conditioning Monitoring (RCM) specialist Perpetuum, has beaten off tough competition to win a 10 year contract with Swedish state-owned train operator SJ to monitor its fleet of high speed X2000’s.

With over 4,500 employees and serving 275 stations, SJ aims to one of the most digitalised companies in the world within the next five years. It has chosen Perpetuum’s cutting edge RCM technology and analytical solutions to move its wheelset maintenance away from distance-based to condition-based decisions. Perpetuum’s solution will give ‘inflight’ analysis of train fleets, track, bearings and wheels and ensure maintenance is correctly focused.

Perpetuum won the contract following tests conducted during an 18-month trial on 80 wheels in the harsh Scandinavian environment. Perpetuum will monitor the wheelsets by using its Bearing Health Index and Wheel Health Index solutions, the algorithms of which have been deployed around the world on over 8,000 wheels travelling over four billion km. Supporting the solution through a 10 year service agreement means Perpetuum can future-proof the data and information streams for SJ, even if there are upgrades to the on-train or back office ICT architectures.

“Perpetuum has proven to be a reliable RCM supplier who delivers cutting edge technology that will help us improve our operation and service to our customers even further,” explains Arvid Fredman, Fleet Manager X2 for SJ.  “The investment fits well with our strategy to be in the forefront of digitalization and continuously striving for efficient and cost effective maintenance.”

“The data collected by Perpetuum can be used to predict failures, increase asset management efficiencies and improve safety, meaning more time on the track for the bogie and a better chance of meeting increased demands over the next decade,” explains Justin Southcombe, Commerical Director for Perpetuum.

“SJ’s X2000 is the tenth fleet the Perpetuum Remote Condition Monitoring system has been deployed on and we are delighted to be working SJ, our first contract in the strategic Scandinavian market.”

Perpetuum, the innovative remote conditioning monitoring specialist, has announced it will be exhibiting at the Elmia Nordic Rail Conference, Sweden, October 10th to 12th 2017. Perpetuum will be exhibiting its cutting edge technology and information services, which is established in rail markets around the world.

Elmia Nordic Rail is the only dedicated railway exhibition in Scandinavia for companies, organizations and individuals with a professional interest in the railway, directly or indirectly.

Perpetuum’s award-winning, quick-to-install and maintenance-free technology, combined with unique expertise and rich analytics, provides valuable real-time “in flight” information that enables rail asset managers to save cost, increase safety and plan more efficiently.

“Our remote condition monitoring services are helping companies across the globe to secure valuable operational efficiencies and take a step closer to the digitisation of the railways,” explains Justin Southcombe, Perpetuum’s Commercial Director. “We are very much looking forward to showcasing this in Sweden.”


For more details on Perpetuum visit

Trouble brewing? Great Northern train emails warning to engineers months before breakdown.

Fitting sensors to the Great Northern Class 365 fleet at Hornsey depot, north London
  • Smart device means greater reliability for passengers
  • Good vibrations from innovative firm Perpetuum

Great Northern railway, run by Govia Thameslink Railway (GTR), is making trains to and from London King’s Cross more reliable by fitting smart hi-tech kit that warns engineers by email when parts are developing a problem.

In a UK first, Great Northern has fitted sensors to both wheel bearings and gearboxes across an entire fleet – all 40 of its Class 365 trains that run between Cambridge, Peterborough and London King’s Cross. The last train will be kitted out tomorrow (20 September 2017).

The system, designed by Perpetuum, a business which was spun out of Southampton University, uses vibration sensors to provide real-time “in-flight” monitoring and diagnostics.

Gerry McFadden, Engineering Director of GTR, said: “This significant investment in state-of-the-art technology will improve the reliability of trains on the route, giving our passengers better journeys. Problems will be highlighted months in advance before these vital components have a chance to break down, avoiding further damage and delays.”

Perpetuum’s Chief Executive, Steve Turley, said: “If a defect is developing it will create a specific vibration signature which our technology can isolate and email an alert to Great Northern’s engineers at their depot in Hornsey. Looking at other train operators, we’ve never had a failure in service for the components our sensors monitor.”

Click to go to GTR news room


In another key growth announcement, Perpetuum, the innovative remote conditioning monitoring specialist, has entered the Chinese rail market after cementing a key partnership with Beijing Sheenline Group Co., Ltd.

Perpetuum and Sheenline have signed a Memorandum of Understanding to manage the introduction of Perpetuum into China. The contract scope is for wheelset, bogie and track information services plus Perpetuum’s wireless, self-powered sensors, as well as design support for installation and commissioning of the systems. Sheenline has procured Perpetuum equipment that will be deployed throughout China over the next two years, targeting Very High Speed, Metros and Freight applications.

Sheenline is owned by China High Speed Railway Technology Co Ltd (CHSR), which is listed on the Shenzhen Stock Exchange and has been involved in the design and equipping of nearly all rolling stock depots in China. It is a major supplier to CHINA RAILWAY Corp. (the reformed MOR) and CRRC Corp., the Chinese publicly traded rolling stock manufacturer and the local transport municipalities throughout China.

“China is the largest railway market in the world and is only destined to get bigger and more influential.  We are very pleased to have found a partner in Sheenline which allows us to offer our Chinese clients the service and support they expect from Perpetuum,” explains Justin Southcombe, Commercial Director for Perpetuum. “This is a very exciting time for both companies to be working in the Chinese market as it looks to revolutionise productivity and punctuality in its railways.”

Xuefeng HUANG, vice-president of Sheenline says; “Sheenline has been investing in high technology as part of its data centralisation strategy and Perpetuum provides the analytical services and on-board data capture that we have been looking for.  We share a vision of introducing carefully selected technology that can be integrated to ensure that the railways can achieve more from less, more safely.”

Trains running ‘perpetually’ with Perpetuum software

  • Expected lifespan increase of up to 25% for wheel bearings
  • Algorithms monitor and calculate wear on bearings and railhead
  • Class 334 fleet will all be fitted with sensors in 2017

Improving reliability and reducing time spent in maintenance depots for the ScotRail Alliance’s Class 334 fleet will be achieved with the fitting of wireless sensors to monitor wheels and wheel bearing condition.

Maintenance regulations require the Class 334 electric trains to have all wheel bearings replaced on hard time maintenance schedules every 600,000 miles whether they need the new parts or not. This means time out of service and sometimes unnecessary maintenance. The addition of this UK-developed system allows the continual monitoring of wheels, bearings and the track and should deliver a 25% increase in bearing lifespans, due to timely fault identification and monitoring.

Perpetuum wireless sensors use a patented ‘energy-harvester’ to provide readings to a centralised data concentrator. This information gives a real-time analysis of the wheel-rail interface showing if there’s bearing/wheel wear or some damage to the track that could impact on overall safety.

There are already over 10,000 of these sensors deployed by rail operators in England, the USA and Australia – with over 1.5 billion miles of ‘service experience’ to learn from – but the ScotRail fleet represents the first time Perpetuum has been used in Scotland.

Similar technology is already used in aviation for passenger aircraft where maintenance is ‘condition-based’ but its value in managing train fleets’ reliability and repairs is now becoming apparent.

The sensors are mounted onto the wheel bearing cover, where they capture data and transmit to a data concentrator. Algorithms calculate differences in the interface and this alerts the fleet manager when the train is ready for maintenance or of a potential fault developing.

Track officials can also see information which pinpoints changes in condition of the track, allowing prompt repair and subsequently lessening damage to the train wheels.

Three Class 334 trains were used in the Perpetuum pilot on the Scottish rail network, with the whole fleet scheduled for fitting in 2017. This is in addition to wifi equipment, which is now live across the 40-strong fleet and free to use for customers.

The ScotRail Alliance’s fleet director Angus Thom said: “Keeping our trains out on the tracks, delivering a safe and efficient rail service is essential to our operation. This technology helps our maintenance teams make informed and timely decisions around monitoring repairs and potential problems, so keeping our 334 fleet in optimal operating condition.”

Perpetuum’s chief executive Dr Steve Turley said: “If fleet managers know what condition a train is in they don’t spend time and budget putting it through an unnecessary upkeep and repair programme. ‘Condition-based’ maintenance means that trains spend more time on the track and improved customer service.”


For further information please contact ScotRail Alliance Comms on 0141 555 4105/4247 or


Justin Southcombe will be discussing how Perpetuum are bringing wireless, batteryless remote condition monitoring to metros around the world. He will update on a number of metro projects that have been recently completed or launched and Perpetuum’s track condition monitoring tool that has been adapted for underground applications. Perpetuum will also be exhibiting at the event.

metrorail logo

Read The Times article on Perpetuum featured in its recent Transportation supplement with interviews with CEO, Steve Turley, and Commercial Director, Justin Southcombe.

The Times: The Industrial Internet of Things


Perpetuum speaking at Middle East rail 2017 – March 7 at 11:30 on Technology Demo Theatre

Perpetuum, the innovative company using energy harvesting sensors to create intelligent, self-monitoring systems, has announced it will be speaking at the Middle East Rail Expo, 7th and 8th March 2017. Now in its 11th year, Middle East Rail, held in Dubai, will welcome over 400 exhibitors, gathering to meet the operational needs of regional rail operators, and is expecting more than 8,000 visitors.middle-east-rail-2017-logo

Perpetuum’s seminar at 11.30am on the 7th March in the Technology Demos Theatre, is entitled “Maximise your timetable through continuous, real-time condition monitoring of every wheel-rail interface,” and will show how the company’s rolling stock and track condition monitoring services will help rail operators maximise their operations and assets. The technology is proven and deployed throughout the world, including Europe and Asia Pacific with more than 7,000 sensors in service.

Perpetuum and Southeastern to present at “Infrastructure Monitoring from Trains”

Dan Tall from Southeasterm will be joining Justin Southcombe from Perpetuum to look at the role of Operator and Infrastructure in today’s railway at this IMechE event. Using the experience over the past year in Kent they will look at the opportunity that live condition information can play in reducing delays and workload by making decisions based on the actual condition of the track. Birmingham – 29 November.


Tapping the potential of the intelligent bogie

by Justin Southcombe of Perpetuum Ltd., Railway Gazette International, November 2016

Remote condition monitoring offers benefits across the industry and opens up the potential to drive efficiency in the supply chain using experience from the aviation sector.

Read more

Rolling Stock Fleet Maintenance 2016

Perpetuum are pleased to be able to announce that they will be the headline sponsor again at Rolling Stock Fleet Maintenance Congress.

Please contact for meetings during the event.
December 7-8 2016, Grange St.Paul’s Hotel, London.

The Congress is an event focused on improving fleet reliability, availability, maintainability and safety at a reduced cost through leveraging Big Data and Condition Based Maintenance.

Click here to see the full agenda, or click here to register