PLATON Project

Planning Tool for the Connectivity in Sensor Networks


Indoor Measurement Campaign


The indoor measurement campaign for wireless sensor networks took place in two different buildings on the university campus of the HTW Dresden. Measurements were performed on different floors with transmitters located at the same floor, at different floors and on top of adjacent buildings.

 
Indoor Measurement Campaign at a Glance:
 

  • CW-Measurements along routes with snapshots every 0.46 cm

  • Transmitter locations:

    • In the hallway on different floors (2.00 m above ground)

    • In different rooms on different floors (1.75 m above ground)

    • At the roof top of an adjacent building (1.90 m above roof)

  • Transmitter frequencies: 169.5 MHz, 869.4 MHz and 2.4 GHz

  • Transmit powers: 19 dBm and 22 dBm

  • Receiver height: 1.90 m above ground level

  • 66 measurement routes with a total length of several hundred meters on different floors

Mobile receiver

 

 Measurement Locations and Simulation Databases

For comparison of measurements and wave propagation predictions, the measurement locations have been modeled with WallMan, the database editor of the WinProp software suite. Besides the outer and inner walls of the buildings, the material properties of the individual obstacles have been considered as well. In order to investigate wave propagation effects and the inter floor penetration in different types of buildings, an old fashioned building (S-Building) and a modern office building (N-Building) was considered.

S-Building

 
Simulation database of S-Building

 
N-Building

 

  

Comparison of Measurements with Simulations

For the indoor measurement campaign, various measurement routes have been investigated. The following figures depict a selection of propagation results and measurement comparisons for four different transmitter locations.
Transmitter located in a hallway
 
Prediction of received power

 
Difference between
prediction and measurement
 
Transmitter located inside class room

 
Prediction of received power

 
Difference between
prediction and measurement
 
 
Transmitter located on a balcony

 
Prediction of received power
 

 
Difference between
prediction and measurement

 
Transmitter located on top of an adjacent building

 
Prediction of received power

 
Difference between
prediction and measurement

 

 

Presentation  of the company 

Read more about the  PLATON project
Read more about measurements conducted in rural environments

Read more about  propagation models.

Read  more about simulation of MESH networks