Patent ID: 7225091

Claim:
A method for monitoring a system in which a datum-line display is generated on a viewing screen for at least one parameter of the system as follows: logging of a variation with time of the values of the parameter concerned, determination of a base value for the parameter concerned, determination of an instantaneous deviation between the base value and the current parameter value or a current mean value of a specified group, containing the current parameter value, of consecutive parameter values, creation of a baseline representing the base value, display of the baseline on the viewing screen in such a way that the baseline extends horizontally on the viewing screen and with a specified length, creation of a continuous curve that represents the variation with time of the parameter values for a specified time period and is normalized with respect to the baseline, display of the continuous curve on the viewing screen in such a way that the continuous curve's time axis extends horizontally on the viewing screen and that the continuous curve on the viewing screen essentially extends over the entire length of the baseline, creation of a deviation bar that represents the instantaneous deviation and is normalized with respect to the baseline, display of the deviation bar on the viewing screen in such a way that the deviation bar extends vertically on the viewing screen from the level of the baseline, wherein the datum-line display has a trend arrow that is generated as follows: determination of the trend of the value variation with time in the current parameter value, creation of the trend arrow, which represents the trend, display of the trend arrow on the viewing screen and wherein the trend arrow is displayed on the viewing screen in such a way that the trend arrow points upward in the case of a positive instantaneous slope and points downward in the case of a negative instantaneous slope.