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Latest update: 27/04/2017 14:01:08


We developed the MIMM road and tunnel measurement vehicle: a tunnel inspection vehicle that does not require traffic control.

We look for hidden deterioration and damage with various methods, identify the cause, and make recommendations for improvement. This is done to prevent accidents in structures and various plant facilities. Our MIMM road and tunnel measurement vehicle takes measurements while running at around 80 km per hour. The vehicle is capable of efficient measurement in a short time without using traffic control even in long tunnels. This can lead to significant cost-cutting. We hope to expand the use of this vehicle nationwide to offer safety and security to society. We are also developing another system for inspecting structures safely and quickly with wireless sensors. 


[Product description] This is an example of health monitoring for a bridge. The system uses a wireless sensor network employing a low-priced MEMS type accelerometer. We adopted a monitoring method in which the measured acceleration data is temporarily accumulated in a local data-gathering unit. It is then transferred and accumulated in a server via telephone lines and centrally managed by the server. It provides a safe, low-priced, and long-term remote monitoring system for the bridge, which makes it possible to quickly start emergency maintenance diagnosis. It can also be applied to other structures and various facilities.

[Product description] This technology is used in routine inspections of road tunnels for detecting deformed parts. It makes use of color images and high-precision 3D space position data of the surface of the tunnel lining. An inspector identifies deformed parts (separated parts, etc.) by conducting hammering tests at the detected places from a mobile lift. The inspector marks the spot and knocks out the flakes and separated parts with a hammer as an emergency measure. This is a measuring system that can significantly improve on close-range visual inspections, which is the conventional kind of routine inspection. Measurements can be taken while the vehicle is running at 40 to 80 km per hour. This enables safe measurement without using traffic control in tunnels, which can be burdensome to road users.