| 摘要 |
PURPOSE: To easily grasp the operation state of plant equipment by changing the display style of a corresponding symbol according to variation in at least one physical quantity regarding the state of the DC power source. CONSTITUTION: Hexagonal symbols are used and symbols 1001 of DC power generators and a linear graphic 1002 connecting them mutually show that individual currents and voltages are at the same levels in operation since the individual symbols are equal in lateral size and longitudinal size. As for triangular symbols used for representation, their triangular shapes are given differences. Namely, the symbol shape whose width is matched with the current value and parallel length is matched with the voltage value in the linear graphic 1002 is varied. Thus, the state of the DC power source which varies with time is represented as the display style of the symbol itself. |
