Electronic device for safer rail travel

Microlog, is a miniature data logger that weighs less than 10 g and has a 4 mb memory, a 16 byte microprocessor and satellite and mobile phone technology packed into one third of the size of a matchbox. It has been developed by a father and son team at the University of Newcastle upon Tyne's Stephenson Centre.

Microlog is able to detect suspect areas on rail track where problems could lead to train disasters, and can use its technology to send a rapid warning signal to operators.

It works by being installed on the train's wheel axles, which bend and twist under stress as the train runs along the rail lines at high speeds.

The sensitive device is able to detect any abnormal stresses which could be caused by problems on the track - for example, buckling due to excessive heat. The results will also help to better understand wheel-rail interaction and to establish more reliable codes for future axle design.

The device logs the relevant data and uses satellite technology to detect the exact location of the problem. It then uses the mobile phone technology to send a warning message to a computer miles away. A software package analyses the data and alerts train operators to any problem that need urgent troubleshooting.

Microlog can also be remotely accessed and reprogrammed using a short-range radio, the Internet, or via the GSM network.

Microlog is already being used to troubleshoot power plants; in rail, automotive and marine industries; and data gathering in research and development.