Paper Title
Portable Device For The Detection Of Nitro-Explosives Using Highly Advanced Microcontroller Based On Optical Properties Of Sensor’s Material
Abstract
-The aim of this study was to design a
device for explosives detection. The study design is
based on excited steady-state luminescence
quenching registration. Sensor’s material
luminescence intensity reduction occurs due to an
interaction of explosives vapours contained in the air.
The decrease rate of the luminescence intensity
indicates the concentration of vapours. To study the
luminescent properties of the sensor element, its
luminescence spectra excited by photons with
energies in the range 280 - 425 nm were measured.
The excitation photoluminescence spectra for
luminescence bands of the sensor element were also
measured. Excitation source was light emitting diode
(375 nm) and luminescent signal receiver was a
photodiode (430 - 650 nm) in device designed. The
device is operated under control of a program. The
algorithm provides multiple operating modes
(configuration, calibration, measurement etc.). Thus
this device is referred to the class of devices with
increased sensitivity to the explosives vapors. The
advantages of device are autonomic power, small
weight and sizes, simplicity of device operation for
measurements