| 摘要 |
PURPOSE:To get always a new char bed level by a method wherein a predetermined upper limit and a predetermined lower limit are applied as reference char bed level data, a differentiating operation of a predetermined direction is carried out, a position where an absolute value becomes a maximum value is calculated, a new char bed level is calculated and this step is repeated in sequence. CONSTITUTION:A char bed of a recovery boiler is photographed with a monitor camera 01, processed with an image processing device 04 and displayed at a CRT display 05. A key-board 06 is used and a char bed level 1 is set and inputted to the image processing device 04. A predetermined upper limit level 2 and a predetermined lower limit level 3 and set by the image processing device 04, absolute values of differentiation in a direction (y) of image brightness Ixk, y, ti at the position xk, y at the time (ti) are calculated and then the maximum position xk, yM1 can be calculated. If the positions xk, yM1 are within a range between the upper limit level 2 and the lower limit level 3, it is set as a position for composing a new char bed level and then a new char bed level 4 at the time (ti) is completed. The char bed level is replaced with an initial reference char bed level, and always a new char bed level is calculated. |
