How often does my radio sensor transmit a telegram?

For reasons of energy saving, the EasySens radio sensors transmit their values at preset intervals. Usually these intervals can be parameterized.  


They consist of two components:

 

1. The WakeUp Time  

This parameter describes the time period the sensor wakes up and performs a measurement. Though the result of this measurement is only transmitted if the <link record:tx_ricodynamicfaq_domain_model_question:tx_ricodynamicfaq_domain_model_question:65 _self>hysteresis value</link> is exceeded.  If this value is not exceeding the hysteresis value, the sensor sleeps until the next measurement is performed.

  

2. The Heartbeat Cycle  

This parameter describes the amount of measurements after which a new telegram is sent, even if the measured value has not changed signficiantly since the last measurement. This gives an indication to the receiver that the transmitter is still in operation - comparable to a heartbeat.

 


WakeUp Time and Heartbeat Cycle can be adjusted at most devices. This is done by integrated plug-in jumpers or software tools e.g. airConfig. Further Information on these parameters can be found in the corresponding datasheets. 

  

INFORMATION:

WakeUp time and heartbeat cycle have a direct influence on the energy consumption of the device. A very short interval can drag the energy storage faster than it is charged. In addition the danger of a telegram collision and data loss increases with higher transmission intervals.


Example: 

WakeUp time:          100s 

Heartbeat cycle:      10   

Send interval at very small value change:  100s x 10 = 1000s ≙ 16,67min

 

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