Title:
MONITOR DEVICE FOR POWER PLANT HAVING DIRECT-CURRENT POWER SOURCE
Document Type and Number:
Japanese Patent JP3209026
Kind Code:
B2
Abstract:
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.
Inventors:
Shigeaki Namba
Katsuyoshi Takizawa
Katsuyoshi Takizawa
Application Number:
JP1229695A
Publication Date:
September 17, 2001
Filing Date:
January 30, 1995
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01M8/00; G05B23/02; H02J13/00; (IPC1-7): G05B23/02; H01M8/00
Domestic Patent References:
| JP6187581A | ||||
| JP61269195A | ||||
| JP61267788A | ||||
| JP2273042A | ||||
| JP3145943A |
Attorney, Agent or Firm:
Yasuo Sakuta