Example 1
According to a first example, the object of the trigger condition Cnd of an alert Al is the detection of ignition problems on a device D constituted by a domestic boiler.
Thus, the trigger condition Cnd can be defined as.
Na>NaT
With
Na: Number of consecutive attempts required for the combustion to start during the last ignition.
NaT: alert threshold, for example equal to 3.
This condition Cnd defines that if the value of Na exceeds the threshold NaT, the alert Al is triggered.
This type of condition Cnd allows detecting failed ignitions on the boiler, indicating a wear of the ignition system requiring a replacement before worsening and total failure.
Example 2
According to a second example, the object of the trigger condition Cnd of an alert Al is the follow-up of the operation of a device D constituted by a domestic boiler.
Thus, the trigger condition Cnd can be defined as:
T>Tmax for a period P
with
T: Temperature of the heating body. This temperature is a state variable or parameter of the device whose value is refreshed every minute.
$TMax: Threshold temperature. This threshold value is an external variable which can for example be defined by default at a value of 90° C. by the manufacturer's recommendations.
P: time period, for example 10 minutes.
The above condition uses a «hysteresis» for a period of time P. Thus, if the value of T exceeds $TMax over an uninterrupted period of at least P, the alert is triggered.
