User's Manual

File : CS-SUP-MUTI-WTHERMSPETEC-E02.sxw
1.3 WAVETHERM MODULE OPERATING LIFE
The aim of this chapter is to describe the power consumption profiles of the WaveTherm radio frequency
module used for temperature measurement in order to estimate the working life of the battery according to
the various operating conditions.
The Wavenis protocol used in all Coronis Systems products includes several dialogue modes (peer-to-peer,
polling, broadcast).
Depending on the operating conditions, the choice of one or the other of these modes may be recommended.
This chapter defines the impact of the mode used on the module operating life.
This chapter does not take into account WaveTherm module application power-saving
features such as system wake-up management (day/night system).
Consult Coronis Systems for specific configurations.
The operating life of a module is based on the average current under various operating conditions. The
operating life of the module depends on the following parameters :
 Average consumption,
 Operating climatic conditions,
 Electronic cut-out voltage,
 Battery capacity.
1.3.1 PARAMETERS WITH AN INFLUENCE ON AVERAGE POWER CONSUMPTION
The average consumption is the sum of the currents drawn for module operation (average stand-by current)
and application parameters. These application parameters are:
 Module wake-up period,
 The population of modules in the network in which this module is incorporated,
 The radio polling frequency of the module,
 The type of data read (instantaneous temperature, internally logged temperatures),
 The Datalogging mode configuration (periodic reading of internally logged data),
 The operating configuration of a repeater module.
Some data used for calculation of the module operating life may not be modified.
This is the case for the electronic cut-out voltage, wake-up period and battery capacity.
The wake-up period is consciously set to 1s. Increasing this wake-up period may help save current in relation
with period reception but also has the effect of increasing the reception frame duration when reading.
➢ Auto-adaptation of the detection threshold
The WaveTherm modules constantly adjust the detection levels for wake up periods according to the
environment. This helps guarantee the operating life-span even in the presence of disturbances and
interference.
WaveTherm module technical specifications page 9 of 31