Cambridge University:
One 100 year old, disused, cast iron underground tunnel is turned into a `smart tunnel' by ....
Cambridge University:
Installing fibre optic cabling to measure longitudinal straining.
Cambridge University:
Drilling the cast iron lining to fix instruments.
Cambridge University:
Applying high pressure to effectively drill the cast iron.
Cambridge University:
Routing cables to the monitored section.
Cambridge University:
Checking the alignment of the longitudinal fibre optics.
Cambridge University:
Start of shift, preparation on nearby station platform.
Cambridge University:
Installing longitudinal instrumentation along the tunnel crown.
Cambridge University:
Inspecting the alignment of longitudinal instrumentation.
Cambridge University:
Establishing communication with the wireless network of sensors.
Cambridge University:
Calibrating the electronics.
Cambridge University:
Incorporating communication antenna and powerful magnets to affix the assembly in position.
Cambridge University:
Powerful magnets are required due to the uneven surface of the cast iron.
Cambridge University:
Starting to setup lighting for non-contact monitoring.
Cambridge University:
Taking a well earned break.
Cambridge University:
Bi-axial sensors detect differential movements in the crown of the tunnel.
Cambridge University:
Non-contact monitoring targets capture structural movements.
Cambridge University:
Bi-directional differential movement sensors connected to wireless communication device.
Cambridge University:
Mechanical (wireless) and fibre optics sensors along the tunnel crown.
Cambridge University:
Fixed video monitoring detect movement of targets.
Cambridge University:
One end of the monitored section.
Cambridge University:
Final arrangement of lighting and non-contact sensor targets.
Cambridge University:
Setting up the monitoring during the final stages of installation.
Cambridge University:
Setting up the monitoring during the final stages of installation.
Cambridge University:
Sensors given a unique identifier.
Cambridge University:
Instrumentation along the tunnel crown
Cambridge University:
Fibre optics bonded to the tunnel lining.
Cambridge University:
Setting up the monitoring during the final stages of installation.
Cambridge University:
Setting up the monitoring during the final stages of installation.
Cambridge University:
Calibrating the mechanical sensors.
