We have developed a measurement method to measure both heat radiation and shapes of the whole surface of refractory blocks in a carbonization chamber of a coke oven under high-temperature conditions. An apparatus of our method consists of an area camera, two line lasers and a specially designed optical filter that divide field of view of the camera into two regions: one for imaging radiation and the other for catching only laser lights for shape measurement. The apparatus moves in the chamber of a coke oven to scan refractory blocks. One conventional problem is that the measured shape data contains a distance from meandering during moving through the 16m-length of the chamber. We have developed a signal processing to remove the disturbance using this feature
We present a method of anomaly detection using multivariate statistical process control(MSPC) to detect the abnormal behaviors of a blast furnace. Tuyere cameras attached circumferentially at the lower side of a blast furnace are used to monitor the inside of the furnace and this method extracts abnormal behaviors of intensities. It is confirmed that with our method, detecting timing is earlier than operators’ notice. Besides, misalignment of cameras doesn’t affect detecting performance, which is important property in actual use.