Alarm display apparatus and alarm display method

1. An alarm display apparatus for displaying alarm information indicating a generation state of alarms based on information acquired from a plant, comprising:

an acquisition module configured to acquire actual measurement values of data obtained from the plant;

a plant simulation module configured to simulate a current state of the plant based on the data obtained from the plant to thereby output current estimation values of data of the plant;

a prediction module configured to predict a future state of the plant based on the estimation values outputted from the plant simulation module to thereby output prediction values of data of the plant;

an actual measurement alarm determination module configured to compare the actual measurement values acquired by the acquisition module with a threshold value to thereby output actual measurement alarm information based on a result of the comparison between the actual measurement values and the threshold value;

an estimation alarm determination module configured to compare the estimation values outputted from the plant simulation module with a threshold value to thereby output estimation alarm information based on a result of the comparison between the estimation values and the threshold value;

a prediction alarm determination module configured to compare the prediction values outputted from the prediction module with a threshold value to thereby output prediction alarm information based on a result of the comparison between the prediction values and the threshold value; and

a display module configured to display, on the same screen, the actual measurement alarm information outputted from the actual measurement alarm determination module, the estimation alarm information outputted from the estimation alarm determination module and the prediction alarm information outputted from the prediction alarm determination module,

wherein when the actual measurement alarm information is output from the actual measurement alarm determination module or the estimation alarm information is output from the estimation alarm determination module, the display module displays the output actual measurement alarm information or the estimation alarm information, instead of the prediction alarm information displayed with respect to alarm corresponding to the actual measurement alarm information or the estimation alarm information.

2. The alarm display apparatus according to claim 1 , wherein the display module displays the actual measurement alarm information, the estimation alarm information and the prediction alarm information in a manner that they are juxtaposed on the screen in a chorological order accorded to generation times of the respective alarms.

3. The alarm display apparatus according to claim 2 , wherein the display module displays the actual measurement alarm information, the estimation alarm information and the prediction alarm information in a manner that background colors of each of the respective information differ between the alarms generated in past and the alarms to be generated in future.

4. The alarm display apparatus according to claim 2 , wherein the display module displays the actual measurement alarm information, the estimation alarm information or the prediction alarm information in a scrollable manner that a time zone of generation times of the alarms is selectable.

5. The alarm display apparatus according to claim 1 , wherein the display module displays each of the alarms represented by the prediction alarm information in a manner that a time period, from a current time to a time where the alarm is predicted to be generated, is displayed as a graphical display.

6. The alarm display apparatus according to claim 5 , wherein the display module displays the graphical display with a color according to a degree of importance of the alarm.

7. The alarm display apparatus according to claim 1 , wherein the display module displays the prediction alarm information in a mode capable of discriminating whether or not the prediction alarm information relates to data kind to be subjected as the actual measurement alarm information.

8. The alarm display apparatus according to claim 1 , wherein the display module displays, as trends, the actual measurement values acquired by the acquisition module, the estimation values outputted from the plant simulation module or the prediction values outputted from the prediction module.

9. The alarm display apparatus according to claim 3 , wherein the display module displays, as trends, the actual measurement values acquired by the acquisition module, the estimation values outputted from the plant simulation module or the prediction values outputted from the prediction module in a mode that background colors of the respective trends differ between the trends in past and the trends in future, and wherein

the background color at a time of displaying the actual measurement alarm information, the estimation alarm information and the prediction alarm information in the past is same as the background color at a time of displaying the trends in the past, and the background color at a time of displaying the actual measurement alarm information, the estimation alarm information and the prediction alarm information in the future is same as the background color at a time of displaying the trends in the future.

10. The alarm display apparatus according to claim 8 , wherein the display module displays, at a time of displaying the trends, an area representing a determination result of the actual measurement alarm determination module, the estimation alarm determination module or the prediction alarm determination module.

11. The alarm display apparatus according to claim 8 , wherein a combination of display colors of a plurality of elements in the trend display is registered in advance, and the display module displays the trends in accordance with the combination thus registered.

12. The alarm display apparatus according to claim 8 , further comprising:

a receiving module configured to receive setting of display colors used for the trend display,

wherein the display module displays a color sample screen for showing the display colors received by the receiving module prior to the trend display.

13. The alarm display apparatus according to claim 8 , wherein when a cursor is moved to the trend of the trend display, the display module displays a kind of the trend to which the cursor is moved.

14. The alarm display apparatus according to claim 8 , wherein the display colors in the trend display are set with reference to display colors used in another apparatus different from the alarm display apparatus.

15. An alarm display method for displaying alarm information indicating a generation state of alarms based on information acquired from a plant, comprising:

acquiring actual measurement values of data obtained from the plant;

simulating a current state of the plant based on the data obtained from the plant to thereby output current estimation values of data of the plant;

predicting a future state of the plant based on the estimation values to thereby output prediction values of data of the plant;

comparing the actual measurement values with a threshold value to thereby output actual measurement alarm information based on a result of the comparison between the actual measurement values and the threshold value;

comparing the estimation values with a threshold value to thereby output estimation alarm information based on a result of the comparison between the estimation values and the threshold value;

comparing the prediction values with a threshold value to thereby output prediction alarm information based on a result of the comparison between the prediction values and the threshold value; and

displaying, on a same screen, the actual measurement alarm information, the estimation alarm information and the prediction alarm information,

wherein when the actual measurement alarm information or the estimation alarm information is output, the output actual measurement alarm information or the estimation alarm information is displayed instead of the prediction alarm information displayed with respect to alarm corresponding to the actual measurement alarm information or the estimation alarm information.