between spaces, e.g. stairs, door, elevator, instead of the space itself in the case of localizing Kruminaite, 2014.
3. DIVISION OF THE FLOOR PLAN
3.1 Simulation of hospital case in test area
For the experiments a test building was selected, which already had the Quuppa system installed. The building has three zones,
which are called Theatre, Business- and Play zone. The dimension of the zones is comparable to that of rooms and closed
spaces in a hospital. The ceiling height corresponds to the height of a regular office building, which is approximately 3m. As the
testing could not be done in the hospital itself, the data from the test area and test setup have been used for the analyses. For the
use case it is important to have similar data compared to when the testing would have been carried out in the hospital. For this
reason, a simulation of the routine of the assets described in the use case was performed in the test area. A number of test cases
are defined to use the position data collected in the test area, as input to measure the performance of localization in the hospital.
Figure 2: Impressions of different areas in the test facility: Play Zone left, Business Zone middle and Theatre right
For every test case the performance of the measurements is calculated and localization is performed. One of four scenarios
based on the accuracy and precision of the measurements is selected for each of the six test cases. The performance of the
location is indicated by the amount of measurements that are located correctly based on the situation described in the test case.
Localization of a position measurement can either be correct or incorrect. For correct localization of the points that would be
wrongly assigned to a location, the performance value can be used. Based on the performance, a model for correcting the
coordinates of the point measurement is described.
Figure 3: Range of the individual receivers on the floor, based on the conical angle
The theoretical range of the receivers is based on the installation height and the conical angle of the antenna of the receivers. In
Figure 3 is shown to what extent the theoretical range covers the floor plan. In this situation the influences from the environment
on the coverage are not taken into account. In Figure 4 the area of the floor plan covered by the receivers is shown in green where
the performance of the system is expected to be according to the requirements of the use case.
Figure 4: Tags in the green area are expected to return the positions with acceptable performance
3.2 Types for subdivision