Peeling detector for tunnel wall
AssigneeMitsubishi Heavy Industries, Ltd.
InventorYoshihiro Sera
Life of this patent
Estimating the term…
Abstract
A peeling detector for a tunnel wall capable of rapidly inspecting the tunnel wall by effectively using infrared radiation is provided. The detector heats a tunnel wall 1 with a light emitting heater 4 while moving. An infrared camera 6 detects infrared radiation radiated by the wall after heating. Based on the quantity of the infrared energy, a difference in the temperature between peeled and normal portions induced by heating is grasped to evaluate whether the peeling of the tunnel wall 1 is present or not.
Claims10
A peeling detector for detecting peeling formed inside a tunnel wall, comprising:
- heating means for uniformly heating inside a tunnel wall by irradiating heat towards a tunnel wall surface by a heater;
- infrared radiation detecting means for detecting a first heat irradiated by a first portion of said tunnel wall and a second heat irradiated by a second portion of said tunnel wall;
- comparing means for comparing the detected first heat and the detected second heat;
- judging means for judging that a peel exists inside the first portion of said tunnel wall when the detected first heat is higher than the detected second heat;
- evaluating means for evaluating at least one of a magnitude of peeling or a denseness of the peeling;
- and
- determining means for determining whether the tunnel wall is sound or is in need of repair based on a determination criteria and a result of said evaluating means,
- wherein the heating means and the infrared radiation detecting means are provided on a vehicle to heat and inspect the tunnel wall while moving.
A peeling detector for detecting peeling formed inside a tunnel wall, comprising:
- heating means for uniformly heating inside the tunnel wall by irradiating heat towards a tunnel wall surface by a heater;
- infrared radiation detecting means for detecting a first heat irradiated by a first portion of said tunnel wall and a second heat irradiated by a second portion of said tunnel wall;
- first comparing means for comparing the detected first heat and the detected second heat;
- judging means for judging that a peel exists inside the first portion of said tunnel wall when the detected first temperature is higher than the detected second temperature;
- evaluating means for evaluating at least one of a magnitude of peeling or a denseness of the peeling;
- and
- determining means for determining whether the tunnel wall is sound or is in need of repair based on a determination criteria and a result of said evaluating means.
Dependencies are inferred from the claim text.