PiCUS TMSO Manual
35
However, in the case of closely spaced groups of trees, a single control sensor for all trees is
sufficient, as it can be assumed that all these trees will be hit by the same gust of wind at the
same time.
In organizational terms the first control sensor created in a cluster is always treated as a cluster
control sensor (and thus as a reference tree of the cluster). The reference tree should always
be the one that is likely to have the greatest stem inclination. The one who receives the most
wind load under all conditions. Usually this is the highest, most exposed within the local group
(in terms of all expected wind directions) and has a small trunk diameter. Of course, the species
also plays a role in this selection, as an oak will move much less than a fir, for example.
The TMSO.CU will then filter/assign the base sensor data to a control sensor according to the
following priority
I.
Control sensor on the same tree as the base sensor
If the tree has no control sensor:
II.
Control sensor of the cluster to which the tree belongs
If the cluster has no control sensor:
III.
TMSO.CU (prerequisite: it is cluster 1 and the central unit has been configured to take
over the function of a control sensor)
The 3rd level is the trees:
Each cluster can contain any number of trees. Each tree receives a unique identification
number. Preferably the as in the cadastre.
The properties of the tree are also entered (species, height, girth...).
The 4th and last level is the sensors, the TMSO.IM:
Each tree can receive any number of sensors (taking into account the maximum number per
system), whereby a maximum of 1 control sensor can be processed by the system. Each
sensor is clearly identified by its serial number.
