PiCUS TMSO Manual
79
12.3 Expert Settings in TMSO.CU
12.3.1 Wind Reaction Measurement (WRM / WRMS)
12.3.1.1 Max. Number of Events per Measuring Cycle
This parameter determines how many memory slots for slope events the system should
provide. During a measurement cycle the TMSO.IM records the measurement curves of
detected inclination events. However, to keep the amount of data small, each TMSO.IM selects
only the strongest events. Each event then occupies one of the reserved memory slots. If all
memory slots are already occupied, the sensor checks with each new event whether it is
stronger than the weakest one already recorded. In this case, this memory space is overwritten
with the data of the new event.
Since the available storage space is limited, it is not possible to record an arbitrary amount of
data.
Therefore, the highest possible value that can be set for this parameter is limited by the two
parameters pre- and post-run time!
The default setting for the number of memory slots is 10.
12.3.1.2 Pre- and Post-processing Time for Event Recording
If a TMSO.IM detects a tilt event during a measurement cycle, it records the measurement
curve and stores it in one of its memory slots (see
3.6.1Wind Response Measurement (WRM)
).
The two parameters pre and post recording time together define the recording time span.
The event timestamp is always set to the point of the local inclination maximum. The lead time
determines how many seconds are recorded before this time stamp and the lag time
determines the period after the time stamp.
The default setting for both values is 10 seconds.
12.3.1.3 Relationship Between Event Recording Time and Max. Number of Memory Slots
A total of 32kB event memory is available in each TMSO.IM. This is where the event memory
slots are saved.
The size of each memory slot is defined by the set recording time period (sum of pre and post
recording time).
Accordingly, there is a maximum possible number of available memory slots, which limits the
value of the parameter "max. number of events per measuring cycle".
Example:
The 32kB memory is sufficient for recording a total of 273 seconds of measurement data.
With the default settings of the recording times (10 seconds pre- and post-run time) each event
memory location occupies 20 seconds. The maximum possible number of memory locations
is therefore 13.
If the recording period is reduced, e.g. to 15 seconds, by lowering the lead time from 10 to 5
seconds, there is a maximum of 18 possible memory locations.
