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A hot subject which people concern about recently is the effect
on human's health exposed to the magnetic field. The magnetic
influence on human's health is not very clear so far, but it is
worth to be paid attention by us.Now, there are a lot of ELF(
Extremely Low-Frequency) electric appliances in buildings in
Taiwan, e.g. fluorescent lamps, air-conditioners, computers...
etc. These electric appliances could generate some composite
magnetic field in buildings. It may result in an influence on
the people who are used to stay in the buildings for a long
time. The point of emphasis in this thesis is the measurement
and analysis of 3-D magnetic field. For lack of human power, we
use the sampling method in this thesis; the sampling objects are
the buildings in teaching campus and some outdoor recreation
zones in Feng Chia university. We measure the spatial magnetic
field in those certain buildings with aid of an accurate ELF
flux density meter and record the results. A "five-test-point
protocol " method which can efficiently analyze the source of
spatial magnetic field in buildings is presented. Therefore,
test results and analysis are reported in this thesis.This
information of measurement will offer references for the
professionals, it also can let people know the condition of
spatial magnetic field distribution. Besides, we use statistical
method and control chart to summarize and strike out the data of
measurement. Then using these data to establish a modeling of
natural population probability density function. The model can
estimate the probability which the magnetic field may occur in
some distance. This will help people to understand the spatial
magnetic field in advance.
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