NEXTSENSE GmbH
This article first appeared in the Railway-News magazine Issue 3 2021.
How China’s Metros Are Benefitting from Faster, More Reliable Profile Measurements
With its innovative CALIPRI technology, Austrian company NEXTSENSE is the world leader in mobile profile measurement. Its innovative measurement technology finds use in the wear measurement of wheelsets, rails and tracks. Its customers include numerous major international railroad companies. China’s metro companies is one of the markets where NEXTSENSE has established a leading position over the last few years.
There are 44 Chinese cities that have a metro system, with 237 metro lines all in all. 41 of these 44 metro operators make use of the CALIPRI measurement devices – making NEXTSENSE one of their top subcontractors. There are only three smaller metro companies with only one line and these still use mechanical gauges. One of the metro operators that is a customer of the Austrian company is the Beijing Metro with 24 lines and a rail network that extends over an area of 727 kilometres. The Beijing Subway offers an average of 10.544 million trips per day and is therefore known as the world’s busiest metro system. Another customer is the Wuhan Metro with 9 lines, 240 stations and a total of 360km route length. With 1.22 billion annual passengers in 2019, Wuhan Metro is the sixth-busiest rapid transit system in the world.
Using CALIPRI in Wuhan Metro’s Maintenance Workshops
The maintenance workshops for the Wuhan Metro are currently using more than 40 sets of CALIPRI portable measurement equipment, which perform measurements of wheel parameters such as wheel profile, wheel diameter and defects for rolling stock…
