Event dispatching / Trigger event for 2 sources

[dandjo (Daniel)]

Hi,

I’m trying to achive the following. I have 2 independent items measuring the electrical power and the heating power of a heat pump. A 3rd item sould measure the COP and is depentend on the previous items. I created a rule for calculating the COP based on electrical and heating power, so I added both of them as trigger for the rule. The measurements of heating and electrical power are sometime out of sync, but most of the time not. When selecting both items as a trigger, I’m getting two measurements at the same time (in most cases).

Is there a possibility to implement a “dispatcher” for both items? Or do I have to rely on a crontab definition every X seconds?

Thanks for any help.

[rossko57]

Might help

Asynchronous Events to Synchronous Event

Problem Statement At times we want to process events that happen asynchronously but only after we have recent data from a set of events. This can be difficult to implement without a lot of custom programming. As an example, MQTT does not guarantee the order of receiving messages. So if we need to process data from MQTT and we only want to do that when a recent set of MQTT messages has been received, we need to do a lot of work to track the timing of those messages. Concept Asynchronous to Sync…