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To save sensor properties in the device flash memory press " |
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Let’s say that we have a temperature sensor. Let’s say that we have set up threshold values. We have set the value 25.5 °C to be a threshold value between Normal/Alarm states. If the temperature drops just below 25.5 °C You will have a “Normal” state. If the temperature goes just above 25.5 °C You will have a “Warning” state. Sometimes the temperature may stay at 25.5 °C and jump up and down by 0.1-0.3 °C. In this case, You will get too many notifications that the sensor is showing Warning or Normal state. In this case, we need to use a Hysteresis. If the type “time” is chosen, the system will wait for a specified time before the State of the sensor is declared. If type “value” is used, unless the temperature drops by a larger amount than specified, the sensor state will not be declared. |
Tuning the sensor value
Sensor readings can be tunned by a linear formula "y = k * x - b"
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