Drive test yöntemi ile elektromanyetik kirlilik haritasının çıkartılması ve ölçüm sonuçlarının değerlendirilmesi
Öz
Teknolojinin gelişmesi ile birlikte çevremizdeki elektromanyetik dalga yayan cihazların sayısı gün geçtikçe
artmaktadır. Kullanmış olduğumuz elektronik cihazların ortamdaki elektromanyetik kirlilik seviyesini
artırdığı bilinen bir gerçektir. Dolayısıyla ortamdaki elektromanyetik kirlilik seviyesinin belirlenmesi insan
sağlığı açısından çok büyük bir önem arz etmektedir.
Bu çalışma ile “Drive Test Yöntemi” (DTY) ile Diyarbakır il merkezindeki 100 kHz 3 GHz frekans
bandındaki elektromanyetik kirlilik seviyesi ölçülmüş ve ölçüm sonuçları sayısal harita üzerinde renkli
olarak gösterilmiştir. C++ programlama dilinde yazmış olduğumuz program ile seri port üzerinden geniş
bandlı elektromanyetik alan ölçer cihazından her saniyede ölçülen etkin (rms) elektrik alan değeri ile GPS
cihazından her saniyede gelen enlem, boylam ve zaman bilgisi senkronize bir şekilde alınmıştır. Elde edilen
ölçüm sonuçları text dosyası şeklinde kaydedilmiştir. Daha sonra bu text dosyası elektromanyetik kirliliği
görselleştirmek için sayısal haritaya aktarılmıştır.
Son olarak, DTY ile farklı tarihlerde alınan iki ölçüm sonucu, Uluslararası İyonlaştırmayan Radyasyondan
Korunma Komisyonu (ICNIRP) tarafından belirlenen meslek ve halk maruziyet sınırları ile karşılaştırılmış
ve ölçüm sonuçlarının bu sınırları aşmadığı tespit edilmiştir.
Anahtar Kelimeler
Mapping of electromagnetic pollution with drive test method and evaluation of its measurement results
Abstract
The numbers of devices emitting electromagnetic
waves around us are increasing day by day with the
development of technology. It is a known fact that
electronic devices used increase the level of
electromagnetic pollution in our environment.
Therefore, determining the level of electromagnetic
pollution in the environment is of great importance
for human health.
There are several methods to measure
electromagnetic pollution. Manually measuring the
value of the electromagnetic field is the most
common method, but this method requires very long
time to measure many points.
Drive Test Method allows us to measure level of
electromagnetic pollution of the long and wide areas
very quickly as a mobile.
In this study, with Drive Test Method, the level of
electromagnetic pollution in Diyarbakır City Center
for 100 kHz to 3 GHz frequency band was measured
and the measurement results were shown in color on
a digital map. The program written by us in C++
programming language obtained effective value of
the electric field (rms) from broadband
electromagnetic field device and latitude, longitude,
and time information from GPS device for every
second synchronously through the serial port. The
measurement results obtained was saved in the form
of text file. Then this text file was imported to digital
map to visualize electromagnetic pollution.
After the two measurements, the values of electric
field were divided into 6 different ranges and colors.
0 =< E Field (V/m) < 1 values were shown in white
color, 1 =< E Field (V/m) < 2 values were shown in
green color, 2 =< E Field (V/m) < 3 values were
shown in blue color ,3 =< E Field (V/m) < 4 values
were shown in yellow color, 4 =< E Field (V/m) < 5
values were shown in red color and finally 5 =< E
Field (V/m) =< 10 values were shown in black color
on a digital map.
The measurements were especially taken one day
during the week and one day at the weekend for
observing the electromagnetic pollution.
The first measurement was taken on Friday, January
8, 2010 the local time between the hours of 15:17 to
19:27. Totally 12860 samples were taken during the
first measurement. The average value of electric
field of the first measurement was 2.22 V/m. The
maximum value of electric field of the first
measurement was 5.40 V/m. The minimum value of
electric field of the first measurement was 0.58 V/m.
The second measurement was taken on Sunday,
January 17, 2010 the local time between the hours
of 15:02 to 18:57. Totally 11533 samples were taken
during the second measurement. The average value
of electric field of the second measurement was 2.50
V/m. The maximum value of electric field of the
second measurement was 6.28 V/m. The minimum
value of electric field of the second measurement
was 1.57 V/m.
Finally, results of two measurements taken at
different times with Drive Test Method were
compared with the reference limits set by
International Commission on Non-Ionizing
Radiation Protection (ICNIRP) for occupational and
general public exposures and it was determined that
the measurement results did not exceed these
reference limits.
Keywords
